WO2003000032A1 - Agricultural machine - Google Patents

Agricultural machine Download PDF

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Publication number
WO2003000032A1
WO2003000032A1 PCT/JP2001/009127 JP0109127W WO03000032A1 WO 2003000032 A1 WO2003000032 A1 WO 2003000032A1 JP 0109127 W JP0109127 W JP 0109127W WO 03000032 A1 WO03000032 A1 WO 03000032A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame structure
support frame
frame
spare seedling
support
Prior art date
Application number
PCT/JP2001/009127
Other languages
French (fr)
Japanese (ja)
Inventor
Tsugunori Yamamoto
Original Assignee
Yanmar Agricultural Equipment Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yanmar Agricultural Equipment Co., Ltd. filed Critical Yanmar Agricultural Equipment Co., Ltd.
Priority to KR1020037002438A priority Critical patent/KR100760030B1/en
Publication of WO2003000032A1 publication Critical patent/WO2003000032A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C11/00—Transplanting machines
    • A01C11/02—Transplanting machines for seedlings
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C11/00—Transplanting machines
    • A01C11/006—Other parts or details or planting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D49/00—Tractors
    • B62D49/06—Tractors adapted for multi-purpose use
    • B62D49/0664—Light, simple, and economical tractors
    • B62D49/0671—Light, simple, and economical tractors the driver riding on the tractor

Definitions

  • the present invention relates to an agricultural work machine.
  • a conventional agricultural work machine has a work machine that can be lifted and lowered at the rear of a self-propelled traveling machine.
  • the traveling machine is equipped with a traveling unit below the machine frame,
  • the prime mover was located in the upper front part of the frame, and the operation section was located behind the prime mover.
  • the fuselage frame hangs a front frame structure that extends in the left and right width direction on the front of a pair of left and right center frame structures that extend in the front-rear direction.
  • the rear frame was formed in a substantially rectangular frame shape by laying a rear-portion-like frame-like structure in a rear view at the rear of the structure.
  • the airframe has a spare seedling support frame that extends in the left-right direction in the middle of the front of the center frame. Spare seedling stands were mounted on the left and right ends of the construct.
  • the conventional agricultural work machine has a structure in which the spare seedling support is supported only by the spare seedling support support frame structure of the body frame.
  • the airframe has a step support frame structure that extends in the left-right width direction between the middle part and the rear part of the center frame structure. Driving operation by body He supported the steps that form the floor of the work area.
  • a rear deck can be placed immediately after these steps, and a rear deck support frame structure for supporting the rear deck is attached to the center frame structure of the fuselage frame, and the rear deck support frame is mounted.
  • the rear deck was attached to the structure.
  • the conventional agricultural work machine had a structure in which a ryadek support frame component was attached to an airframe and a ryadeki was attached to the riadeck support frame.
  • the spare seedling mounting support structure is supported only by the spare seedling mounting support frame structure of the body frame, the spare seedling mounting support frame structure is heavy.
  • the strength of the spare seedling mounting support frame structure was ensured by forming the spare seedling mounting support frame structure thick so that the seedling mounting platform could be sufficiently supported.
  • the conventional agricultural working machine described above has a structure in which the rear deck cannot be supported by the body frame unless a rear deck support frame structure, which is a separate member from the step support frame structure, is attached to the body frame. there were.
  • a spare seedling mounting table supporting frame structure extending in the left-right width direction is installed at the front of a pair of left and right center frame structures extending in the front-rear direction constituting the body frame.
  • the spare seedling support is supported by the left and right sides of the spare seedling support frame, and the front frame is horizontally laid at the front of a pair of left and right center-to-frame components.
  • the left and right sides of the front frame structure were connected to the left and right sides of the spare seedling mounting support frame structure.
  • the battery is placed inside the area surrounded by the front side of the Sen-ichi frame structure, the side of the front frame structure, and the side of the spare seedling support frame structure in plan view. did.
  • a hydraulic pump was installed inside the area surrounded by the front side of the center frame structure, the side of the front frame structure and the side of the spare seedling support frame structure in plan view. .
  • the engine is disposed inside a region surrounded by the front part of the pair of left and right sensor frame members, the middle part of the front frame member, and the middle part of the spare seedling support frame member in plan view.
  • one of two regions surrounded by the front side of the pair of left and right sensor frame members, the side portion of the front frame member, and the side portion of the spare seedling support frame member in plan view The battery was placed inside the area and the hydraulic pump was placed inside the other area.
  • a step for forming a floor of a driving operation unit is provided above the body frame, and a rear deck is provided behind the step, and the steps are supported by the body frame.
  • a step support frame structure was provided to support the rear deck.
  • the step support frame structure extends the base end portion in the left-right width direction, extends the front end portion in the front-rear direction, and supports the step with the front end portion. Decided to support the Lya deck.
  • a bracket for mounting a rear deck is provided at a base end of the step supporting frame structure, and the bracket is configured so that a fertilizer can be mounted in place of the rear deck.
  • a planting machine as a working machine is connected to the rear of the traveling machine body configured to be able to move up and down so as to be able to move up and down.
  • a spare seedling support frame structure that extends in the left-right width direction is erected, The left and right sides of this are designed to support the spare seedling table.
  • the front frame structure is laid horizontally on the front of a pair of left and right center frame structures, and the left and right sides of the front frame structure are connected to the left and right sides of the spare seedling mounting support frame structure. It is.
  • the load of the spare seedling rest is not only received on the left and right sides of the spare seedling stand support frame structure but also on the left and right sides of the front frame structure.
  • the front frame member and the front frame member cooperate to support the heavy seedling stand.
  • the area surrounded by the front side of the center frame structure, the side of the front frame structure, and the side of the spare seedling support frame structure in plan view.
  • the front side of the sensor frame structure, the side of the front frame structure, and the side of the spare seedling support frame structure around the battery.
  • stones and mud are flipped up from the field or road surface while the aircraft is running, these stones and mud are not supported by the center frame structure, the front frame structure, and the spare seedling mounting table. It only collides with the frame structure and does not directly collide with the battery. This allows the front side of the center frame structure, the side of the front frame structure, and the spare seedling mounting support frame structure.
  • the side of the body functions as a protective member for the battery, and these protective members can prevent the battery from being damaged, and can extend the life of the agricultural work machine.
  • Battery It is not necessary to separately provide a protective member for protecting the even cowpea to this, it is possible to reduce the weight and cost reduction of the agricultural machine.
  • an II pressure pump is provided in an area surrounded by the front side of the center frame assembly, the side of the front frame assembly, and the side of the spare seedling support frame assembly. If it is installed, the front side of the center frame, the side of the front frame, and the side of the frame for supporting the nursery stand are located around the hydraulic pump. Even if stones, mud, etc. are flipped up from the field or the road surface while the aircraft is running, these stones, mud, etc. will not be removed from the center frame, the front frame, and the spare seedling support frame. And does not directly hit the hydraulic pump. This allows the front side of the center frame structure, the side of the front frame structure and the side of the spare seedling support frame structure to be in contact with each other.
  • Acts as protection for hydraulic pumps Becomes bets, it is possible to prevent the breakage of the hydraulic pump Ri by these protective members, it is possible to extend the life of the agricultural machine, deer In addition, it is not necessary to separately provide a protection member for protecting the hydraulic pump, and thus, the weight and cost of the agricultural working machine can be reduced.
  • the engine is disposed inside a region surrounded by the front part of the pair of left and right sensor frame members, the middle part of the front frame member, and the middle part of the spare seedling support frame member in plan view. Of the two front and rear sides of the pair of left and right frame members, the side of the front frame member, and the side of the spare seedling support frame member in plan view.
  • the battery is disposed inside one area and the hydraulic pump is disposed inside the other area, not only can the above-mentioned battery and the hydraulic pump be protected, but also the heavy engine
  • the battery and the hydraulic pump, which are also heavy objects, are arranged separately on the left and right, and the weight balance on the left and right can be improved, improving the running stability of the aircraft. It is possible.
  • a planting machine as a working machine is connected to the rear of the traveling machine which is configured to be able to move up and down so as to be able to ascend and descend.
  • the rear deck is installed behind the steps.
  • a step supporting frame structure for supporting the steps is provided on the body frame, and the step supporting frame structure is configured to support the rear deck.
  • the step support frame structure provided on the body frame alone can support not only the steps but also the rear deck disposed behind the same step, thereby providing a dedicated member for supporting the rear deck.
  • the base end of the step support frame structure is extended in the left-right width direction, and the distal end is extended in the front-rear direction, and the step is supported by the distal end, while the rear deck is supported by the base end.
  • the step support frame structure can be manufactured easily and inexpensively, and the cost of the agricultural work machine can be further reduced.
  • a bracket for mounting a rear deck is provided at the base end of the step supporting frame structure, and when the fertilizer can be mounted on the same bracket instead of the rear deck, the fertilizer is mounted. It is not necessary to separately prepare members for performing the above operations, and this can also reduce the number of parts and thereby reduce the cost and the weight of the aircraft.
  • the left view which shows a rice transplanter.
  • FIG. 2 is a plan view showing a body frame.
  • FIG. 1 A first figure.
  • the left sectional side view which shows a motor part.
  • FIG. 2 is a front view showing a steering shaft support frame structure.
  • FIG. The rear view which shows a step support frame structure.
  • FIG. 4 is a plan view showing steps.
  • the left view which shows a fertilizer.
  • FIG. 4 is a side view showing a steering mechanism.
  • FIG. 4 is a side cross-sectional view showing a torque generator and a steering case.
  • FIG. 1 A first figure.
  • FIG. 4 is a bottom view showing the steering case.
  • the side view which shows a key switch panel.
  • FIG. 1 A first figure.
  • the rice transplanter 1 is described as an example of the agricultural working machine according to the present invention.
  • the agricultural working machine according to the present invention is not limited to the rice transplanter 1, but may be a tractor, a combine, or a vegetable. It can also be applied to work machines used for various agricultural work such as transplanters.
  • the rice transplanter 1 has a planting machine 3 connected via a lifting mechanism 4 to a rear part of a traveling body 2 configured to be self-propelled so as to be able to move up and down.
  • the traveling body 2 has a traveling section 6 below the body frame 5 and a prime mover section 7 at the front of the body frame 5, and has a prime mover section ⁇ .
  • the driving operation unit 8 is arranged at the rear position.
  • the fuselage frame 5 is extended in the front-rear direction, and is bent substantially upward from the center to the rear. Between the front ends of the pair of left and right center frame members 9 and 10, the central portion is extended in the left and right width direction, and the left and right portions are bent and the left and right portions are extended rearward.
  • a spare stepping frame supporting frame structure 12 is erected, and a cylindrical step supporting frame structure extending in the left-right width direction between the middle portions of the sun frame structures 9 and 10.
  • the body frame 5 is provided with a rectangular flat plate-shaped engine support 17 for mounting the engine 16 between the center of the front frame structure 11 and the center of the spare seedling support frame structure 12.
  • the engine support 17 is provided with a rectangular flat steering support 19 for supporting a steering mechanism 18 at the rear end thereof. ing.
  • the body frame 5 is provided with a bracket 22 at the base end of the auxiliary seedling support column 21 that constitutes the auxiliary seedling platform 20 at the left and right ends of the auxiliary seedling platform support frame assembly 12.
  • the left and right ends of the front frame structure 11 are connected to the left and right ends of the spare seedling mounting support frame structure 12, respectively.
  • a rectangular plate-shaped battery support 24 for mounting the battery 23 is mounted between the right side of the structure 11, and furthermore, the auxiliary frame support 9, 10 and the spare seedling support are supported.
  • a pair of left and right step support columns 51, 52 are erected upward near the intersection with the frame structure 12.
  • the front frame structure 11 is laid between the front ends of the pair of left and right center frame structures 9 and 10, and the left and right sides of the front frame structure 11 are spared. Because it is connected to the left and right sides of the seedling supporting frame structure 12, the load of the spare seedling mounting 20 is not only received by the left and right ends of the spare seedling supporting frame structure 12, but also the front frame structure 11 are also received at the left and right end portions, and the spare seedling mounting support frame structure 12 and the front frame structure 11 cooperate to support the spare seedling mounting table 20 which is heavy.
  • the body frame 5 has a pair of left and right steering shaft support frame structures 25 and 26 attached to the front ends of the front frame structure 11 at the upper center thereof.
  • a cylindrical steering boss 28 for rotatably supporting a steering shaft 27 is attached to a rear end of the shaft-shaft supporting frame members 25 and 26 via a substantially U-shaped bracket 29.
  • the body frame 5 includes a pair of left and right cylindrical step supporting frame members 30, 31 on the left and right sides of the gate-shaped lya frame member 15.
  • the base end is mounted, and the rear deck support brackets 32, 33 are mounted between the corners of these frame structures 15 and the base ends of the step support frame structures 30, 31.
  • Each of the step support frame members 30 and 31 has a shape in which the base end extends in the left-right width direction, and is bent in the middle, and the distal end extends in the front-rear direction. .
  • the traveling section 6 has a front portion of the mission case 34 attached to a rear portion of the steering support 19 provided on the body frame 5.
  • a pair of left and right front axle cases 35 and 36 are connected to the front of the mission case 34 in an interlocked manner, and front wheels 37 are connected to each front axle case 35 and 36 in an interlocked manner.
  • the traveling section 6 is connected to a rear axle case 38 extending in the left and right width direction in an interlocking manner at the rear of the mission case 34, and is connected to a rear wheel 39 at the left and right ends of the rear axle case 38 in an interlocking manner.
  • the rear axle case 38 has the upper left and right sides mounted on the base end of the rear frame structure 15 of the body frame 5.
  • the mission case 34 is attached to the steering support 19 of the body frame 5
  • the rear axle case 38 connected to the rear end of the mission case 34 is attached to the rear frame structure of the body frame 5.
  • the rear parts of the frame 9 and 10 bent toward, the rear frame structure 15, the mission case 34 and the rear axle case 38 constitute a substantially triangular truss structure. This enhances the rigidity of the fuselage and improves the running stability of the fuselage.
  • the left and right center frame members 9 and 10 are passed through recesses formed by the mission case 34 and the front axle casings 35 and 36 in a plan view, so that the center frame member 9 is formed.
  • the positions of, 10 are lower than before to lower the center of gravity of the fuselage to improve running stability, and to lower the vehicle height to improve getting on and off.
  • the prime mover unit 7 mounts the engine 16 on the engine support 17 of the body frame 5 and places the fuel above the engine 16.
  • a muffler 59 is connected to the left side of the engine 16, and an exhaust pipe 60 projects forward and downward from the front end of the muffler 59.
  • a mouth 61 is formed, and the engine 16, fuel tank 40 and muffler 59 are covered with a bonnet 62.
  • the drive shafts 41 and 42 project from the rear left portion and the front right portion of the engine 16, respectively, and project from the rear left portion of the engine 16.
  • a driving power transmission mechanism 43 for transmitting power to the traveling section 6 is interlocked and connected to the driven drive shaft 41, while a drive shaft 42 protruding to the front right side of the engine 16 is connected to a power generation mechanism 44.
  • the prime mover unit 7 has a belt-type stepless speed-change transmission in which a drive shaft 41 protrudes from the rear left portion of the engine 16 and a part of the traveling power transmission mechanism 43 is formed at the tip of the drive shaft 41.
  • a hydraulic pump 46 for hydraulically driving the planting machine 3 etc. is mounted coaxially on the left side of the transmission 45, and the drive shaft 41 of the engine 16 is also linked to the hydraulic pump 46.
  • the traveling power transmission mechanism 43 has an output pulley 47 of a transmission 45 attached to a drive shaft 41 of the engine 16, and an input pulley 49 attached to an input shaft 48 protruding from the front left side of the mission case 34.
  • a transmission belt 50 is suspended between the output side bulge 47 and the input side bulge 49.
  • the prime mover unit 7 has a drive shaft 42 protruding from the front right portion of the engine 16, and a power generating mechanism 44 operatively connected to a tip end of the drive shaft 42.
  • the power generating mechanism 44 drives the engine 16.
  • the output side bulge 53 is attached to the tip of the shaft 42, and between the generator support column 54 and the right step support column 52 erected on the front side of the center frame structure 10 on the right side of the body frame 5.
  • a generator 55 is mounted on the input shaft 56 of the electric motor 55, and an input burry 57 is mounted on the input shaft 56.
  • a transmission belt 58 is suspended between the output pulley 53 and the input pulley 57.
  • the drive shafts 41 and 42 are respectively protruded to the left and right sides of the engine 16, and the traveling power transmission mechanism 43 is disposed on the left side of the engine 16 while the right side of the engine 16 is Power generation mechanism 44
  • the driving power transmission mechanism 43 is linked to the drive shaft 41 projecting to the left of the engine 16, and the power generation mechanism 44 is linked to the drive shaft 42 projecting to the right of the engine 16.
  • the length of the fuselage on the front side of the operation unit 8 should be as short as possible, compared to a conventional agricultural work machine in which the power generation mechanism 44 is provided further ahead of the engine 16 provided in front of the unit 8. Can be.
  • the front view from the driving operation unit 8 is not obstructed by the bonnet 62 covering the engine 16 and the power generation mechanism 44, and safety during traveling can be improved.
  • the length of the fuselage on the front side of the fuselage is reduced, the minimum turning radius can be reduced, and the turning performance can be improved.
  • the length is also shortened, and the size of the aircraft can be reduced.
  • the exhaust port 61 of the engine 16 is provided on the opposite side of the engine 16 across the engine 16, the high-temperature exhaust discharged from the exhaust port 61 of the engine 16 is opposite to the generator 44.
  • the exhaust is not directly blown to the power generation mechanism 44, thereby preventing the exhaust of the engine 16 from damaging the appearance of the power generation mechanism 44.
  • the step support column 52 since the generator 55 that forms a part of the power generation mechanism 44 is supported by the step support column 52 formed on the body frame 5, the step support column 52 also functions as a column for supporting the generator 55. Therefore, it is not necessary to separately provide a support member for supporting the generator 55, thereby reducing the number of parts, and reducing the parts management cost and the manufacturing cost. And reduce the weight of the aircraft. it can.
  • the front frame component 11 is laid between the front ends of the pair of left and right center frame components 9 and 10, and the left and right ends of the front frame component 11 are connected to each other.
  • FIG. 2 by connecting to the left and right sides of the spare seedling support frame supporting frame structure 12, the front side of the pair of left and right center frame structures 9 and 10 and the front frame structure 1 can be seen in plan view. A closed-loop area surrounded by the middle of 1 and the frame of the spare seedling support frame structure 12.
  • S1 is also formed, and also in the plan view, the sensu-frame structure
  • the front left and right sides of the center frame components 9 and 10, the left and right sides of the front frame component 11 and the left and right sides of the spare seedling support frame component 12 are located on the front left and right sides of the components 9 and 10, respectively.
  • a pair of left and right enclosed closed loop regions S2 and S3 are formed .
  • the engine 16 and the transmission 45 are arranged inside the central area S 1, and the hydraulic pump 46 is arranged inside the left area S 2, and the right area Battery 23 is installed inside S3.
  • the battery 23 and the hydraulic pump 46 which are also heavy, are distributed around the heavy engine 16 and the left and right to improve the weight balance between the left and right, and improve the running stability of the aircraft. Have improved.
  • the engine 16 and the transmission 45 are disposed inside the central area S 1 in plan view, the engine 16 and the transmission 45 are surrounded by the front sides of the transmission frame members 9 and 10 around the transmission 16.
  • the middle part of the front frame structure 1 1 and the middle part of the spare seedling mounting support frame structure 12 are present, and the front parts of the front and rear frame structures 9 and 10 and the front frame structure are present.
  • the middle part of 1 and the middle part of the spare seedling mounting support frame structure 12 will function as a protection member to protect the engine 16 and the transmission 45 from obstacles such as ridges.
  • These protective members can prevent damage to the engine 16 and the transmission 45, extend the life of the agricultural work machine, and additionally provide a separate protective member to protect the engine 16 and the transmission 45. This eliminates the necessity, so that the weight and cost of the agricultural work equipment can be reduced.
  • the hydraulic pump 46 is disposed inside the area S2 on the left side in a plan view, the front sides of the front and rear frame components 9 and 10 and the front frame 11 Part and the side of the spare seedling supporting frame structure 12, the front side of the center frame components 9 and 10, the side of the front frame forming 11, and the spare seedling supporting frame.
  • the side of the component 12 functions as a protection member for protecting the hydraulic pump 46 from obstacles such as ridges, and the protection member can prevent the hydraulic pump 46 from being damaged.
  • the service life can be prolonged, and it is not necessary to separately provide a protective member for protecting the hydraulic pump 46. This also makes it possible to reduce the weight and cost of the agricultural work machine.
  • the battery 23 is disposed inside the area S3 on the right side in a plan view, the front sides of the sensor frames 9 and 10 and the sides of the front frame member 11 around the battery 23.
  • the side of the spare seedling support frame structure 12, the front sides of the center frame components 9 and 10, the side of the front frame structure 11, and the spare seedling support frame configuration The side of the body 12 functions as a protection member for protecting the battery 23 from obstacles such as ridges, and the protection member can prevent the battery 23 from being damaged, thereby extending the life of the agricultural work machine.
  • the front step 63 is formed in a substantially U-shape in a plan view by forming a cutout portion 64 in the front central portion with a part of the front end portion being opened, and is formed into a bifurcated shape. It is mounted on top of step support columns 51 and 52 formed on the fuselage frame 5 with its leading end extending toward the left and right sides of the engine 16.
  • a front cover 65 is provided so as to be openable and closable in a notch 64 formed in a forked front portion, and the front cover 65 has a substantially cylindrical shape at a lower end portion.
  • an engine oil inspection and refueling port 67 of the engine 16 is located inside the front cover 65.
  • the notch 64 is formed in the front central portion of the front step 63, and the front step 63 is formed in a substantially U-shape in plan view.
  • the front step 63 and the components located at the front of the fuselage such as the engine 16 become hard to dry, and the front step 63 can be easily attached and detached. The workability of the maintenance work that is performed by removing it is improved.
  • a front cover 65 that functions as an opening / closing lid in a notch 64 formed in the front center of the front step 63, the front force bar can be removed without removing the front step 63.
  • the maintenance work of the lower part of the engine 16 and the traveling power transmission mechanism 43 linked to the engine 16 can be performed, improving the workability of the maintenance work.
  • the engine oil inspection and oil supply port 67 of the engine 16 can be performed simply by opening and closing the front force bar 65 without removing the front step 63. Oil and oil refueling operations can now be performed, improving workability in engine oil inspection and refueling operations.
  • the notch 64 formed at the front central portion of the front step 63 can be provided with an attachment such as a winch or a pump instead of the open / close lid.
  • a bonnet 62 and a front column force bar 68 are mounted on the front of the front step 63 in this order from the front.
  • the bonnet 62 covers the front and left and right sides of the engine 16 and the fuel tank 40.
  • a front column cover 68 covers the rear of the engine 16 and the fuel tank 40.
  • the bonnet 62 and the front column cover 68 integrally form a front part of the fuselage.
  • the bonnet 62 functions as a front bonnet structure, while the front column cover 68 serves as a rear bonnet. It is designed to function as a structure.
  • the bonnet 62 has recesses 69, 69 formed on the upper side of the substantially central portion in a front view by making the left and right widths of the upper portion smaller than the left and right widths of the lower portion.
  • the recess 69 is formed as a smooth curved surface that is continuous with the left and right side surfaces of the bonnet 62.
  • the recess 69 is formed in the upper part of the bonnet 62 when viewed from the front, so that when the worker moves on the upper surface of the front step 63 provided on the lower side of the bonnet 62, The distance between the upper part of the bonnet 62 and the operator can be increased, so that when the fertilizer applicator 135 is mounted on the rear part of the traveling vehicle 2 (see FIG. 10), the worker can use the fertilizer to replenish the fertilizer. Hold bag and move along front step 63 along bonnet 62 Since the fertilizer bag can be passed through the recess formed in the upper part of the bonnet 62, the operator carrying the fertilizer bag can easily move the upper surface of the front step 63 in a comfortable posture.
  • the concave portion 69 formed in the bonnet 62 is formed with a curved surface, even if the fertilizer bag comes into contact with the bonnet 62 when the fertilizer bag is transported, the fertilizer bag is not damaged, and the fertilizer bag is not damaged. Fertilizer is scattered due to damage and adheres to the airframe, so that mackerel can be generated, or the trouble of cleaning the scattered fertilizer can be prevented.
  • the bonnet 62 has a locking portion 70 at the lower front end, and a locking portion 71 at the upper rear end.
  • the bonnet 62 forms a tongue piece 70a as a locking portion 70 at a lower portion of the front end, and on the other hand, between the middle portions of the steering shaft support frame members 25 and 26.
  • a bracket ⁇ extended in the left-right width direction is horizontally mounted, and a locking piece 73 is provided at the lower center of the bracket 72, and a locking hole 74 having a horizontally long hole shape is formed in the locking piece 73.
  • an opening 75 is formed at the upper rear side, a fuel supply port 76 for the fuel tank 40 is located in the opening 75, and a fuel supply lid 77 for refueling is attached to the opening 75 so as to be openable and closable.
  • a tongue piece 71 a as a lock part 71 at the upper end edge of the opening 75, and a knob screw insertion hole 78 for inserting a knob screw 81 as a hook member is formed in the tongue piece 71 a.
  • a bracket 79 projects forward from the upper end of the steering post 28, and a female screw 80 is attached to the front end of the bracket 79.
  • the bonnet 62 is fixed to the fuselage by screwing the knob screw 81 inserted into the female screw 80 to the female screw 80.
  • the knob screw 81 is It is located inside the oil cover 77, and by opening the fuel cover 77 and turning the knob screw 81 inside the fuel cover 77, the bonnet 62 can be opened and closed. I'm going to do it.
  • the locking portion 70 for locking the bonnet 62 to the bonnet 62 and the locking portion 71 for locking the bonnet 62 are provided respectively, and the locking portion is provided.
  • 71 is covered with a fuel filler lid 77 as an opening / closing lid, and the opening and closing operations of the lock part 71 can be performed inside the opening / closing lid (fuel filler lid 77).
  • the lock portion 71 is not exposed from the outside, so that the operator's body does not come into contact with the lock portion 71, and it is complicated that the lip is released and the bonnet 62 falls off. It is possible to improve the safety of the design, because the lock part 71 is not exposed from the outside. it can.
  • the lubricating lid 77 for refueling which is provided on the bonnet 62 so as to be openable and closable, is used as the lid, it is not necessary to provide a separate lid to cover the hook part 71. It is possible to reduce manufacturing costs and parts management costs and to reduce the weight of the aircraft.
  • the fuel filler cover 77 is used as the opening / closing cover for covering the lock portion 71.
  • the front cover 65 provided at the lower end of the bonnet 62 so as to be openable and closable. Can be used as an open / close lid.
  • the same reference numerals are used for members having substantially the same functions as those in the configuration in FIG. 4 described above.
  • the bonnet 62 has a tongue piece 71 a as a lock portion 71 at the lower front end, and a knob screw 81 for inserting a knob screw 81 as a lock member into the tongue piece 71 a.
  • a bracket 72 extending in the left-right width direction is bridged between the middle portions of the ring shaft support frame members 25 and 26, and a female screw 80 is formed in the center of the bracket 72.
  • the bonnet 62 is screwed to the body frame 5 by screwing the knob screw 81 inserted into the knob screw hole 78 of the tongue piece 71a.
  • the knob screw 81 is located inside the front cover 65 and is covered by the front cover 65.
  • the bonnet 62 forms a tongue piece 70a at the rear end of the rear end as a locking portion 70, while forming a locking recess 82 at the upper front end of the front column cover 68, and The tongue piece 70a is locked.
  • the bonnet 62 is attached and detached in front of the fuselage.
  • the workability of maintenance work for the engine 16 and the like can be improved.
  • the driving operation unit 8 has a seat 83 mounted on the center upper portion of the seat support frame structure 14 of the body frame 5.
  • a steering shaft 27 is rotatably disposed in front of the seat 83 at a predetermined interval, and the steering shaft 27 is rotatably supported by the steering post 28 and the steering shaft 28 is supported.
  • the front column cover 68 is covered with an operating lever (main transmission lever 84a and seedling lever 84b) and left and right brake pedals (not shown) on the right side of the front column cover 68.
  • a clutch pedal 85 is provided on the left side of the front column cover 68.
  • reference numeral 104 denotes a steering wheel attached to the upper end of the steering shaft 27.
  • a horizontally long rectangular box-shaped key switch panel 87 attached to the tearing boss 28 via a bracket 86 is provided.
  • the key switch panel 87 has various warning lamps 88a to 88d on its upper surface (for example, a warning lamp 88a for prompting the seedling consolidation work, a warning lamp 88b for prompting the supply of fertilizer, a warning lamp 88c for notifying that the fertilizer is clogged, the left and right brakes. Warning lamps 88d, etc. that indicate that the pedals are disconnected, and switches 89a to 89c (for example, warning buzzer stop switch 89a, engine start / stop switch 89b, automatic planting depth adjustment)
  • a recess 90 is formed in the lower right side of the rear side (the side facing the seat 83), and a key switch 91 is provided in the recess 90.
  • the key 92 is inserted into the key switch 91.
  • the depth of the recess 90 is such that the rear end of the key 92 attached to the key switch 91 does not protrude from the rear end of the key switch panel 87 in plan view. Is formed.
  • the warning lamps 88a to 88d are provided on the upper surface of the key switch panel 87, so that the operator can easily visually recognize the warning lamps 88a to 88d during the driving operation. It is possible to improve the safety of driving operation.
  • the front surface of the key switch panel 87 is made a horizontal surface, and the warning lamps 88a to 88d are arranged on such a horizontal surface so that workers can easily see the warning lamps 88a to 88d.
  • the rear part of the upper surface is formed to have a front-to-back and back-to-back slope in accordance with the operator's eyes, and switches 89a to 89c are arranged on such a slope so that the operator can operate switches 89a to 89c.
  • the safety of driving operation has been improved by making it easier.
  • a key switch 91 in a concave portion 90 formed on the side surface of the key switch panel 87, when the key 92 is inserted into the key switch 91, the rear end of the key switch 92 becomes a key switch panel. Protruding from the side of 87 The amount of protrusion can be reduced as much as possible, which reduces the risk of the operator's body accidentally touching the rear end of the key 92, preventing the key 92 from malfunctioning and ensuring safety. Performance can be improved.
  • the concave portion 90 is formed on the side surface facing the seat 83, the operator can easily operate the key 92 while sitting on the seat 83, thereby improving operability and improving the front of the worker.
  • the space on the side can be enlarged, and driving can be performed comfortably.
  • the concave portion 90 is formed so that the tip of the key 92 attached to the key switch 91 does not protrude from the key switch panel 87 in plan view, even if the key 92 is inserted into the key switch 91, the This eliminates the risk that the body of the key 92 may accidentally come into contact with the rear end of the key 92, thereby preventing malfunction of the key 92 and improving safety.
  • the driving operation unit 8 has an upper end of a torque generator 93 for power steering interlockedly connected to a base end of the steering shaft 27, and the torque generator 93 has the same configuration.
  • a steering case 95 accommodating a speed reduction mechanism 94 (see FIG. 13) is interlockingly connected to the lower end of the steering case 95.
  • the steering case 95 is not formed inside the mission case 34 as in the related art, but is formed as a conventional case. It is formed as a separate body separate from the case 34.
  • the torque generator 93 and the steering case 95 are disposed between the engine 16 and the mission case 34.
  • the torque generator 93 is disposed in the recess 96 formed in the lower rear part of the engine 16 with the upper surface inclined upward and rearward
  • a steering case 95 is disposed in a recess 97 formed in the lower front part of the mission case 34 with the upper surface inclined upward and rearward.
  • the steering case 95 is changed in accordance with the specification change. It is only necessary to change the arrangement position appropriately, and it is not necessary to change the shape of the mission case 34 itself, thereby making it possible to change the specifications of the agricultural work machine quickly and easily.
  • the space formed between the engine 16 and the mission case 34 is effectively used to compact the aircraft. It is possible to achieve the goal.
  • recesses 96 and 97 are formed at the rear of the engine 16 and at the front of the transmission case 34, respectively, and the steering case 95 and the torque generator 93 are arranged between the recesses 96 and 97 so that the steering case is formed. 95 ⁇ A sufficient space is provided for installing the torque generator 93.
  • recesses 96 and 97 are formed in the lower rear part of the engine 16 and the lower front part of the mission case 34, respectively, and the steering case 95 and the torque generator 93 are inclined between the two concave parts 96 and 97 with a low front and rear height.
  • the engine 16, the steering case 95, the torque generator 93, and the mission case 34 can be arranged in close contact and concentrated, thereby further improving the compactness of the aircraft. Have to be able to.
  • FIGS. 4 and 12 a rear end of an engine support 17 provided to support the engine 16 on the body frame 5 is provided.
  • a steering support 19 for supporting the steering case 95 is extended, and a torque generator 93 is mounted on an upper portion of the steering support 19 while a steering case 95 is mounted on a lower portion of the steering support 19.
  • the torque generator 93 and the steering case 95 are directly fastened via the steering support 19 of the fuselage frame 5 with a total of four bolts 98, two on each side.
  • the rear end of the steering support 19 is connected to the front end of the mission case 34 via a bracket 99, while the rear end of the steering case 95 is reinforced at the lower rear end of the steering case 34. They are connected via a support 100.
  • the front end of the engine support 17 (front frame structure 11) and the rear end of the steering support 19 (bracket 99 and A bolt 101 which is a fastening portion with the transmission case 34 and a rear end portion of the reinforcing support 100 (a bolt 102 which is a fastening portion between the reinforcing support 100 and the mission case 34) are formed by a virtual triangle 103 in a side view. It is configured to be located at each vertex of.
  • the engine 16 and the mission case 34 can be firmly connected to each other via the steering case 95, and the strength of the engine support 17 itself can be sufficiently secured.
  • the rigidity can be improved.
  • a steering support 19 constituting the body frame 5 is interposed between the torque generator 93 and the steering case 95, and the torque generator 93 and the steering gear are provided on the steering support 19.
  • Mounting case 95 is installed.
  • the attachment structure can be simplified, and the components required for the attachment can be simplified. Reduce points As a result, manufacturing costs and parts management costs can be reduced, and the weight of the aircraft can be reduced.
  • the torque generator 93 is mounted on the steering support 19 of the body frame 5, the load applied to the steering wheel 104 is received by the steering support 19 of the body frame 5, and the steering case The load applied to the 95 can be reduced, and the steering case 95 can be made lighter than the conventional case, which can also reduce the weight of the aircraft.
  • the torque generator 93 has a case body 106 covering the lower end of the torque generator body 105 and between the torque generator body 105 and the steering case 95.
  • the case body 106 is configured to seal a power steering oil circulation passage formed inside the torque generator body 105.
  • 107 is an oil inlet
  • 108 is an oil outlet.
  • the case body 106 has a drain opening 109 for discharging oil from the torque generator body 105 formed at the rear end.
  • 110 is a drain pipe.
  • the torque generator 93 is connected to a base end of an output shaft 112 rotatably provided on a case body 106 to a distal end of an intermediate shaft 111 protruding from a lower end of the torque generator body 105,
  • the output gear 1 13 is attached to the tip of the output shaft 1 12.
  • 114 is a bearing and 115 is a packing.
  • the steering case 95 The upper opening of the tearing case body 116 is covered with a steering case cover 117, and a reduction mechanism 94 is accommodated and disposed inside.
  • the torque generator 93 has a sealed structure, and since the oil circulating inside the torque generator 93 does not flow into the steering case 95, the steering case 95 has a sealed structure. It is not necessary.
  • the reduction mechanism 94 has a large-diameter transmission gear 119 mounted on an upper portion of an input shaft 118 rotatably supported by a steering case main body 116 and a steering case lid 117, and a small-diameter gear mounted on a lower portion of the input shaft 118.
  • the transmission gear 120 is mounted, and on the other hand, a fan-shaped slewing gear 122 is mounted on the upper part of the output shaft 121 rotatably supported at the rear of the steering case body 116, and these small-diameter transmission gear 120 and slewing gear 122 are combined. Let me.
  • the output shaft 121 projects downward from the rear lower portion of the steering case body 116, and a plate-shaped pitman arm 123 is attached to the lower end of the output shaft 121.
  • a pair of left and right drag links 124, 125 are linked to the front end of the toman arm 123, and the drag links 124, 125 are linked to knuckle arms (not shown) provided on the left and right front axle cases 35, 36. Connected.
  • an arc-shaped groove 126 is formed in the lower surface of the steering case body 116, while a pin 127 is projected upward on the upper surface of the pitman arm 123.
  • the pivotal movement is performed along the groove 126, and the rotation of the pitman arm 123 is prevented by contacting the pins 127 with both ends of the groove 126.
  • the groove 126 formed in the steering case 95 as a cutting angle stopper of the steering wheel 104, the precision of the cutting angle is improved while the number of components constituting the steering wheel is reduced.
  • the torque generator 93 is hermetically sealed by the case body 106 provided between the torque generator 93 and the steering case 95, so that the steering case 95 does not need to have a closed structure, and the torque No packing or fasteners are required to make the generator 93 and the steering case 95 a sealed structure, and the number of parts can be reduced, thereby reducing manufacturing costs and parts management costs. And the weight of the aircraft can be reduced.
  • the torque generator 93 and the case body 106 have a sealed structure, even if the torque generator 93 and the case body 106 are removed from the steering case 95, oil leaks from the torque generator 93 and the case body 106. There is no danger, thereby improving the maintenance workability.
  • the case body 106 has a drain opening 109 for discharging the oil of the torque generator body 105, the oil inside the torque generator 93 can be drained from the drain opening 109, and the torque The maintenance work of Eneray 93 can be performed easily.
  • the torque generator 93 since the output shaft 112 of the torque generator 93 is inserted through the case body 106 and inserted into the steering case 95, the torque generator 93 is linked to the steering case 95, so that the torque generator 93 is connected.
  • the 93 output shafts 1 and 12 can also be used as the input shafts for the steering case 95, reducing the number of parts, thereby reducing manufacturing costs and parts management costs, and reducing the weight of the machine. Can be achieved.
  • the driving operation unit 8 has a step 130 disposed around the seat 83, and the step 130 and the front step 63 form a floor. I have.
  • step 130 the front end is connected to the rear end of the front step 63, and side steps 131 and 132 for getting on and off are formed on the right and left sides.
  • the dividing position of the step 130 and the front step 63 (the position of the front end of the step 130 and the rear end of the front step 63) is located on the rear side of the body compared to the conventional case, and the steering wheel 104 It is located near the position directly below the rear end, so that maintenance work on the transmission 45 can be performed simply by removing the front step 63, and the number of steps can be reduced by the amount that the split position has moved to the rear of the machine. 130 can be made smaller and lighter, and the work of attaching and detaching step 130 can be facilitated.
  • a recess 133 is formed at the foot of the operator by forming a recess directly below the seat 83 in a side view, thereby making the operator's foot wider and comfortable. Can be operated.
  • step 130 the left and right ends are extended to the left and right sides of the rear wheel 39 so as to cover the upper front side of an auxiliary wheel (not shown) attached to the outside of the rear wheel 39 in a wetland or the like.
  • an auxiliary wheel (not shown) attached to the outside of the rear wheel 39 in a wetland or the like. This prevents the operator from being exposed to mud when operating the seedling connecting lever 84b on the side of the machine.
  • the step 130 itself can be widened to improve the workability when transferring seedlings or supplying fertilizer, and the object on the step 130 falls and wraps around the auxiliary wheel. Can be prevented.
  • the step 130 is supported by the step support frame structure 13 of the body frame 5 at substantially the center, and the step support frame of the body frame 5 is provided at the left and right rear ends. It is supported by components 30 and 31.
  • the step support frame structures 30 and 31 that support the left and right rear ends of the step 130 support not only the step 130 but also a rear deck 134 that covers the rear end of the fuselage disposed behind the step 130.
  • each of the step supporting frame components 30, 31 has a shape in which the base end extends in the left-right width direction, and is bent in the middle, and the distal end extends forward and rearward.
  • the base end extending in the left-right width direction supports the rear deck 134, while the front end extending in the front-rear direction supports the step 130.
  • the rear deck 134 is fixed by the rear deck supporting brackets 32 and 33 provided between the corners of the rear frame constituting body 15 and the base ends of the step supporting frame bodies 30 and 31.
  • a fertilizer applicator 135 can be attached to the rear deck support brackets 32 and 33 in place of the rear deck 134, as shown in FIG.
  • the body frame 5 is provided with the step support frame members 30 and 31 for supporting the step 130, and the step support frame members 30 and 31 also support the rear deck 134.
  • 134 can also be supported, which eliminates the need to separately provide a dedicated member for supporting the lya deck 134, and reduces the number of parts that make up the agricultural work machine. The management cost can be reduced, and the weight of the aircraft can be reduced.
  • the base ends of the step support frame members 30, 31 are extended in the left-right width direction, and the distal ends are extended in the front-rear direction. Since the Ryadeck 134 is supported by the part, the step support frame members 30, 31 can be manufactured easily and inexpensively, and the cost of the agricultural work machine can be further reduced.
  • rear deck support brackets 32 and 33 for mounting the rear deck 134. Since the 135 can be mounted, there is no need to provide a separate member for mounting the fertilizer applicator 135, and this can also reduce the number of parts and reduce the cost and weight of the aircraft. it can.
  • the present invention is embodied in the form described above, and has the following effects.
  • the spare seedlings extending in the left and right width directions are provided at the front portions of a pair of left and right center frame components extending in the front-rear direction constituting the body frame.
  • a stand support frame structure is erected, and the spare seedling support is supported on the left and right sides of the spare seedling support structure, and a front frame structure is provided at the front of a pair of left and right center frame structures.
  • the left and right sides of the front frame structure are connected to the left and right sides of the spare seedling support frame structure, so that the load of the spare seedling support is supported by the spare seedling support.
  • the front side portion of the center frame structure, the side portion of the front side frame structure, and the side portion of the spare seedling mounting support frame structure are surrounded in plan view.
  • the front side of the center frame structure, the side of the front frame structure, and the side of the spare seedling support frame structure are arranged around the battery because the battery is disposed inside the area.
  • the front side of the center frame structure, the side of the front frame structure, and the side of the spare seedling support frame structure protect the battery from obstacles such as ridges. These protection members can prevent the battery from being damaged and extend the life of the agricultural work machine.
  • the front side of the center frame structure and the front side frame around the hydraulic pump The side of the structure and the side of the spare seedling support frame structure are present, and the front side of the center frame structure, the side of the front frame structure and the spare seedling support frame are provided.
  • the sides of the frame structure function as protective members for protecting the hydraulic pump from obstacles such as ridges, and these protective members can prevent damage to the hydraulic pump, and extend the life of the agricultural work machine. Can be achieved.
  • the front side portion of the pair of left and right sensor frame members, the middle portion of the front frame member, and the middle portion of the spare seedling mounting support frame member are surrounded.
  • the engine is arranged inside the region, and the front side of the pair of left and right sensor frame members, the side portion of the front frame member, and the side portion of the spare seedling support frame member member in plan view.
  • the battery is placed inside one of the two areas surrounded by the circle, while the hydraulic pump is placed inside the other area, so that the battery and the hydraulic pump described above can be protected as much as possible. Rather, the battery and the hydraulic pump, which are the same heavy objects, are placed separately on the left and right around the engine, which is a heavy object, so that the left and right weight balance can be improved.
  • the running stability of the aircraft can be improved.
  • a step of forming a floor portion of the driving operation unit is provided above the body frame, and a rear deck is provided behind the step, and furthermore, the body frame is provided.
  • a step support frame structure for supporting the steps is provided on the vehicle, and the step support frame structure is also configured to support the rear deck.Therefore, only the step support frame structure provided on the fuselage frame is used. Not only the step but also the same step It can also support the rear deck arranged behind.
  • the base end of the step support frame structure is extended in the left-right width direction, and the tip is extended in the front-rear direction. Since the rear end is supported on the rear deck while supporting, the step supporting frame structure can be manufactured easily and inexpensively, and the cost of the agricultural work machine can be further reduced. .
  • a bracket for mounting a rear deck is provided at a base end of the step support frame structure, and a fertilizer applicator can be mounted on the same bracket instead of the rear deck. Therefore, it is not necessary to prepare a separate member for mounting the fertilizer, and this can also reduce the number of parts and reduce the cost and weight of the machine.

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Abstract

An agricultural machine in which in order to reduce the weight of the agricultural machine, installed on the front of a pair of right and left center frame structures extending longitudinally to constitute a machine frame is a reserve seedling mount support frame structure extending in the direction of the width, and a reserve seedling mount is supported on the right and left sides of the reserve seedling mount support frame structure, wherein a front frame structure is transversely installed on the front of the pair of right and left center frame structures, and the front frame structure is connected at its right and left sides to the right and left sides of the reserve seedling mount support frame structure.

Description

明 細 養  Special education
農作業機 Farm work machine
技術分野 Technical field
本発明は、 農作業機に関するものである  The present invention relates to an agricultural work machine.
背景技術 Background art
従来の農作業機は、 自走可能に構成した走行機体の後部に作業機を昇 降可能に配設しており、 走行機体は、 機体フ レームの下方に走行部を配 設する一方、 機体フ レームの前側上部に原動機部を配設し、 同原動機部 の後方位置に運転操作部を配設していた。  A conventional agricultural work machine has a work machine that can be lifted and lowered at the rear of a self-propelled traveling machine.The traveling machine is equipped with a traveling unit below the machine frame, The prime mover was located in the upper front part of the frame, and the operation section was located behind the prime mover.
機体フレームは、 前後方向に向けて伸延させた左右一対のセン夕一フ レ一ム構成体の前部に左右幅方向に向けて伸延させた前側フレーム構成 体を横架する一方、 セン夕ーフレーム構成体の後部に背面視で略門型状 のリャフ レーム構成体を横架することによ り、 略矩形枠状に形成してい た。  The fuselage frame hangs a front frame structure that extends in the left and right width direction on the front of a pair of left and right center frame structures that extend in the front-rear direction. The rear frame was formed in a substantially rectangular frame shape by laying a rear-portion-like frame-like structure in a rear view at the rear of the structure.
また、 機体フ レームは、 センターフ レーム構成体の前側中途部に左右 幅方向に向けて伸延させた予備苗載台支持フ レーム構成体を架設してお り、 同予備苗載台支持フ レーム構成体の左右端部に予備苗載台を載設し ていた。  In addition, the airframe has a spare seedling support frame that extends in the left-right direction in the middle of the front of the center frame. Spare seedling stands were mounted on the left and right ends of the construct.
すなわち、 従来の農作業機では、 予備苗載台を機体フ レームの予備苗 載台支持フレーム構成体のみで支持する構造となっていた。  In other words, the conventional agricultural work machine has a structure in which the spare seedling support is supported only by the spare seedling support support frame structure of the body frame.
また、 機体フ レームは、 センターフ レーム構成体の中途部間と後部間 に左右幅方向に向けて伸延させたステップ支持フレーム構成体をそれそ れ横架しており、 これらのステツプ支持フレーム構成体によって運転操 作部の床部を形成するステツプを支持していた。 In addition, the airframe has a step support frame structure that extends in the left-right width direction between the middle part and the rear part of the center frame structure. Driving operation by body He supported the steps that form the floor of the work area.
かかるステツプの直後方位置には、 リャデッキを配置できるようにし てお り、 機体フ レームのセンターフレーム構成体に リャデッキを支持す るためのリャデッキ支持フレーム構成体を取付け、同リャデッキ支持フ レ一ム構成体にリャデッキを取り付けるようにしていた。  A rear deck can be placed immediately after these steps, and a rear deck support frame structure for supporting the rear deck is attached to the center frame structure of the fuselage frame, and the rear deck support frame is mounted. The rear deck was attached to the structure.
すなわち、 従来の農作業機では、 機体フ レームにリャデッキ支持フ レ ーム構成体を取付け、 同リャデッキ支持フ レームにリャデツキを取付け る構造となっていた。  In other words, the conventional agricultural work machine had a structure in which a ryadek support frame component was attached to an airframe and a ryadeki was attached to the riadeck support frame.
ところが、 上記従来の農作業機にあっては、 機体フ レームの予備苗載 台支持フレーム構成体だけで予備苗載台を支持していたため、 予備苗載 台支持フレーム構成体が重量物である予備苗載台を十分に支持すること ができるように予備苗載台支持フレーム構成体を太く形成することで予 備苗載台支持フレーム構成体の強度を確保していた。  However, in the above-mentioned conventional agricultural working machine, since the spare seedling mounting support structure is supported only by the spare seedling mounting support frame structure of the body frame, the spare seedling mounting support frame structure is heavy. The strength of the spare seedling mounting support frame structure was ensured by forming the spare seedling mounting support frame structure thick so that the seedling mounting platform could be sufficiently supported.
そのため、 予備苗載台支持フレーム構成体の重量ゃコス 卜が増大し、 これにより、 農作業機全体の軽量化や低廉化の障害となるおそれがあつ た。  As a result, the weight and cost of the spare seedling mounting support frame structure increased, which could hinder the weight and cost reduction of the entire agricultural work machine.
また、 上記従来の農作業機にあっては、 機体フ レームにステップ支持 フレーム構成体とは別部材である リャデッキ支持フレーム構成体を取付 けなければ、 リャデッキを機体フレームで支持することができない構造 であった。  In addition, the conventional agricultural working machine described above has a structure in which the rear deck cannot be supported by the body frame unless a rear deck support frame structure, which is a separate member from the step support frame structure, is attached to the body frame. there were.
そのため、 ステップ支持フ レーム構成体とは別に、 リャデッキ支持フ レーム構成体を用意する必要があり、 これにより、 農作業機を構成する 部品点数が増大し、 製造コス トゃ部品管理コス 卜が増大するおそれがあ るとともに、 機体の重量も増大するおそれがあった。 発明の開示 Therefore, it is necessary to prepare a rear deck supporting frame component separately from the step supporting frame component, which increases the number of parts constituting the agricultural work machine and increases the manufacturing cost and the component management cost. There was a possibility that the weight of the aircraft would increase as well. Disclosure of the invention
そこで、 本発明では、 機体フ レームを構成する前後方向に向けて伸延 させた左右一対のセンターフレーム構成体の前部に左右幅方向に向けて 伸延させた予備苗載台支持フレーム構成体を架設し、 同予備苗載台支持 フレーム構成体の左右側部で予備苗載台を支持し、 しかも、 左右一対の センタ一フ レーム構成体の前部に前側フ レーム構成体を横架するととも に、 同前側フレーム構成体の左右側部を前記予備苗載台支持フレーム構 成体の左右側部に連結した。  Therefore, in the present invention, a spare seedling mounting table supporting frame structure extending in the left-right width direction is installed at the front of a pair of left and right center frame structures extending in the front-rear direction constituting the body frame. The spare seedling support is supported by the left and right sides of the spare seedling support frame, and the front frame is horizontally laid at the front of a pair of left and right center-to-frame components. The left and right sides of the front frame structure were connected to the left and right sides of the spare seedling mounting support frame structure.
また、 平面視においてセン夕一フレーム構成体の前側部と前側フレー ム構成体の側部と予備苗載台支持フ レーム構成体の側部とで囲まれた領 域の内部にバッテリーを配設した。  Also, the battery is placed inside the area surrounded by the front side of the Sen-ichi frame structure, the side of the front frame structure, and the side of the spare seedling support frame structure in plan view. did.
また、 平面視においてセンターフレーム構成体の前側部と前側フレー ム構成体の側部と予備苗載台支持フ レーム構成体の側部とで囲まれた領 域の内部に油圧ボンプを配設した。  In addition, a hydraulic pump was installed inside the area surrounded by the front side of the center frame structure, the side of the front frame structure and the side of the spare seedling support frame structure in plan view. .
また、 平面視において左右一対のセン夕ーフレーム構成体の前側部と 前側フレーム構成体の中途部と予備苗載台支持フレーム構成体の中途部 とで囲まれた領域の内部にエンジンを配設するとともに、 平面視におい て左右一対のセン夕ーフレーム構成体の前側部と前側フレーム構成体の 側部と予備苗載台支持フ レーム構成体の側部とで囲まれだ二つの領域の うちの一方の領域の内部にバッテリ一を配設する一方、 他方の領域の内 部に油圧ポンプを配設した。  In addition, the engine is disposed inside a region surrounded by the front part of the pair of left and right sensor frame members, the middle part of the front frame member, and the middle part of the spare seedling support frame member in plan view. In addition, one of two regions surrounded by the front side of the pair of left and right sensor frame members, the side portion of the front frame member, and the side portion of the spare seedling support frame member in plan view The battery was placed inside the area and the hydraulic pump was placed inside the other area.
また、 本発明では、 機体フ レームの上部に運転操作部の床部を形成す るステツプを配設するとともに、 同ステツプの後方にリャデッキを配設 し、 しかも、 機体フ レームにステップを支持するためのステップ支持フ レーム構成体を設け、 同ステツプ支持フレーム構成体でリャデッキをも 支持すべく構成した。 また、 前記ステップ支持フ レーム構成体は、 基端部を左右幅方向に向 けて伸延させるとともに、 先端部を前後方向に向けて伸延させ、 同先端 部でステップを支持する一方、 前記基端部でリャデッキを支持すること とした。 Further, in the present invention, a step for forming a floor of a driving operation unit is provided above the body frame, and a rear deck is provided behind the step, and the steps are supported by the body frame. For this purpose, a step support frame structure was provided to support the rear deck. In addition, the step support frame structure extends the base end portion in the left-right width direction, extends the front end portion in the front-rear direction, and supports the step with the front end portion. Decided to support the Lya deck.
また、 前記ステツプ支持フレーム構成体の基端部にリャデッキを装着 するためのブラケッ トを設け、 同ブラケッ トは、 リャデッキに替えて施 肥機を装着できるべく構成した。  Further, a bracket for mounting a rear deck is provided at a base end of the step supporting frame structure, and the bracket is configured so that a fertilizer can be mounted in place of the rear deck.
すなわち、 本発明に係る農作業機は、 自走可能に構成した走行機体の 後部に作業機としての植付機を昇降可能に連設しており、 走行機体は、 機体フレームを構成する前後方向に向けて伸延させた左右一対のセン夕 ーフ レーム構成体の前部に左右幅方向に向けて伸延させた予備苗載台支 持フレーム構成体を架設し、 同予備苗載台支持フレーム構成体の左右側 部で予備苗載台を支持するように構成したものである。  That is, in the agricultural working machine according to the present invention, a planting machine as a working machine is connected to the rear of the traveling machine body configured to be able to move up and down so as to be able to move up and down. At the front of a pair of left and right center frame components that extend toward the front, a spare seedling support frame structure that extends in the left-right width direction is erected, The left and right sides of this are designed to support the spare seedling table.
しかも、 左右一対のセンターフレーム構成体の前部に前側フレーム構 成体を横架するとともに、 同前側フレーム構成体の左右側部を前記予備 苗載台支持フレーム構成体の左右側部に連結したものである。  In addition, the front frame structure is laid horizontally on the front of a pair of left and right center frame structures, and the left and right sides of the front frame structure are connected to the left and right sides of the spare seedling mounting support frame structure. It is.
そのため、 予備苗載台の荷重を予備苗載台支持フレーム構成体の左右 側部で受けるだけでなく前側フレーム構成体の左右側部でも受けること になり、 これら予備苗載台支持フレーム構成体と前側フレーム構成体と が協働して重量物である予備苗載台を支持することになる。  As a result, the load of the spare seedling rest is not only received on the left and right sides of the spare seedling stand support frame structure but also on the left and right sides of the front frame structure. The front frame member and the front frame member cooperate to support the heavy seedling stand.
これにより、 予備苗載台支持フレーム構成体の強度を確保するために 太く形成する必要がなくなり、 予備苗載台支持フレーム構成体自体の軽 量化や低廉化を図れるばかりでなく、 農作業機全体の軽量化や低廉化を 図ることができる。  This eliminates the need to make the spare seedling support frame structure thick to ensure the strength of the spare seedling support frame structure, which not only reduces the weight and cost of the spare seedling support frame structure itself, but also reduces the overall cost of the agricultural work machine. Lighter weight and lower cost can be achieved.
特に、 平面視においてセンターフレーム構成体の前側部と前側フレー ム構成体の側部と予備苗載台支持フ レーム構成体の側部とで囲まれた領 域の内部にバッテリ一を配設した場合には、 ノ ッテリーの周囲にセン夕 ーフレーム構成体の前側部と前側フレーム構成体の側部と予備苗載台支 持フレーム構成体の側部とが存在することになり、 仮に機体走行中に圃 場や路面から石や泥土等が跳ね上げられても、 これらの石や泥土等は、 センターフレーム構成体や前側フレーム構成体や予備苗載台支持フレー ム構成体に衝突するだけで、 バッテリ一に直接的に衝突することはない これによ り、 センターフレーム構成体の前側部と前側フレーム構成体 の側部と予備苗載台支持フ レーム構成体の側部とがバッテリーの保護部 材として機能することになり、 これらの保護部材によ りバッテリーの破 損を防止することができ、 農作業機の長寿命化を図ることができ、 しか も、 バッテリーを保護するための保護部材を別途設ける必要がなくなり 、 これによつても、 農作業機の軽量化や低廉化を図ることができる。 In particular, the area surrounded by the front side of the center frame structure, the side of the front frame structure, and the side of the spare seedling support frame structure in plan view. When the battery is installed inside the area, the front side of the sensor frame structure, the side of the front frame structure, and the side of the spare seedling support frame structure around the battery. Even if stones and mud are flipped up from the field or road surface while the aircraft is running, these stones and mud are not supported by the center frame structure, the front frame structure, and the spare seedling mounting table. It only collides with the frame structure and does not directly collide with the battery. This allows the front side of the center frame structure, the side of the front frame structure, and the spare seedling mounting support frame structure. The side of the body functions as a protective member for the battery, and these protective members can prevent the battery from being damaged, and can extend the life of the agricultural work machine. , Battery It is not necessary to separately provide a protective member for protecting the even cowpea to this, it is possible to reduce the weight and cost reduction of the agricultural machine.
また、 平面視においてセン夕ーフレーム構成体の前側部と前側フレー ム構成体の側部と予備苗載台支持フレーム構成体の側部とで囲まれた領 域の内部に : II圧ポンプを配設した場合には、 油圧ポンプの周囲にセン夕 一フ レーム構成体の前側部と前側フ レーム構成体の側部と子備苗載台支 持フレーム構成体の側部とが存在することになり、 仮に機体走行中に圃 場や路面から石や泥土等が跳ね上げられても、 これらの石や泥土等は、 センターフレーム構成体や前側フレーム構成体や予備苗載台支持フレー ム構成体に衝突するだけで、 油圧ポンプに直接的に衝突することはない これにより、 センターフレーム構成体の前側部と前側フレーム構成体 の側部と予備苗載台支持フ レーム構成体の側部とが油圧ポンプの保護部 材として機能することになり、 これらの保護部材によ り油圧ポンプの破 損を防止することができ、 農作業機の長寿命化を図ることができ、 しか も、 油圧ポンプを保護するための保護部材を別途設ける必要がなくなり 、 これによつても、 農作業機の軽量化や低廉化を図ることができる。 In addition, in a plan view, an II pressure pump is provided in an area surrounded by the front side of the center frame assembly, the side of the front frame assembly, and the side of the spare seedling support frame assembly. If it is installed, the front side of the center frame, the side of the front frame, and the side of the frame for supporting the nursery stand are located around the hydraulic pump. Even if stones, mud, etc. are flipped up from the field or the road surface while the aircraft is running, these stones, mud, etc. will not be removed from the center frame, the front frame, and the spare seedling support frame. And does not directly hit the hydraulic pump. This allows the front side of the center frame structure, the side of the front frame structure and the side of the spare seedling support frame structure to be in contact with each other. Acts as protection for hydraulic pumps Becomes bets, it is possible to prevent the breakage of the hydraulic pump Ri by these protective members, it is possible to extend the life of the agricultural machine, deer In addition, it is not necessary to separately provide a protection member for protecting the hydraulic pump, and thus, the weight and cost of the agricultural working machine can be reduced.
また、 平面視において左右一対のセン夕ーフレーム構成体の前側部と 前側フレーム構成体の中途部と予備苗載台支持フレーム構成体の中途部 とで囲まれた領域の内部にエンジンを配設するとともに、 平面視におい て左右一対のセン夕一フレーム構成体の前側部と前側フレーム構成体の 側部と予備苗載台支持フ レーム構成体の側部とで囲まれた二つの領域の うちの一方の領域の内部にバッテリ一を配設する一方、 他方の領域の内 部に油圧ポンプを配設した場合には、 前述したバッテリ一や油圧ポンプ の保護ができるだけでなく、 重量物であるエンジンを中心に同じく重量 物であるバッテリーと油圧ポンプとを左右に振り分けて配置することに なり、 左右の重量バランスを良好なものとすることができ、 機体の走行 安定性を向上させることができる。  In addition, the engine is disposed inside a region surrounded by the front part of the pair of left and right sensor frame members, the middle part of the front frame member, and the middle part of the spare seedling support frame member in plan view. Of the two front and rear sides of the pair of left and right frame members, the side of the front frame member, and the side of the spare seedling support frame member in plan view. When the battery is disposed inside one area and the hydraulic pump is disposed inside the other area, not only can the above-mentioned battery and the hydraulic pump be protected, but also the heavy engine The battery and the hydraulic pump, which are also heavy objects, are arranged separately on the left and right, and the weight balance on the left and right can be improved, improving the running stability of the aircraft. It is possible.
また、 本発明に係る農作業機は、 自走可能に構成した走行機体の後部 に作業機としての植付機を昇降可能に連設しており、 走行機体は、 機体 フレームの上部に運転操作部の床部を形成するステツプを配設するとと もに、 同ステップの後方にリャデッキを配設したものである。  Also, in the agricultural working machine according to the present invention, a planting machine as a working machine is connected to the rear of the traveling machine which is configured to be able to move up and down so as to be able to ascend and descend. In addition to the steps that form the floor, the rear deck is installed behind the steps.
しかも、 機体フ レームにステップを支持するためのステップ支持フ レ —ム構成体を設け、 同ステツプ支持フレーム構成体でリャデッキをも支 持するように構成したものである。  Moreover, a step supporting frame structure for supporting the steps is provided on the body frame, and the step supporting frame structure is configured to support the rear deck.
そのため、 機体フ レームに設けたステップ支持フ レーム構成体だけで ステップのみならず同ステツプの後方に配設したリャデッキをも支持す ることができ、 これにより、 リャデッキを支持するための専用部材を別 途設ける必要がなくなり、 農作業機を構成する部品点数を削減すること ができるので、 製造コス トや部品管理コス トを低減することができると ともに、 機体の軽量化を図ることができる。 特に、 前記ステップ支持フレーム構成体の基端部を左右幅方向に向け て伸延させるとともに、 先端部を前後方向に向けて伸延させ、 同先端部 でステップを支持する一方、 前記基端部でリャデッキを支持することに した場合には、 ステツプ支持フレーム構成体を製造容易で安価なものと することができ、 より一層農作業機の低廉化を図ることができる。 Therefore, the step support frame structure provided on the body frame alone can support not only the steps but also the rear deck disposed behind the same step, thereby providing a dedicated member for supporting the rear deck. This eliminates the need for a separate installation, and reduces the number of components that make up the agricultural work machine. This can reduce manufacturing costs and component management costs, and reduce the weight of the aircraft. In particular, the base end of the step support frame structure is extended in the left-right width direction, and the distal end is extended in the front-rear direction, and the step is supported by the distal end, while the rear deck is supported by the base end. In this case, the step support frame structure can be manufactured easily and inexpensively, and the cost of the agricultural work machine can be further reduced.
また、 前記ステツプ支持フレーム構成体の基端部にリャデッキを装着 するためのブラケッ トを設け、 同ブラケッ トに、 リャデッキに替えて施 肥機を装着できるようにした場合には、 施肥機を装着するための部材を 別途用意する必要がなくなり、 これによつても、 部品点数の削減による 低廉化や機体の軽量化を図ることができる。  In addition, a bracket for mounting a rear deck is provided at the base end of the step supporting frame structure, and when the fertilizer can be mounted on the same bracket instead of the rear deck, the fertilizer is mounted. It is not necessary to separately prepare members for performing the above operations, and this can also reduce the number of parts and thereby reduce the cost and the weight of the aircraft.
図面の簡単な説明 BRIEF DESCRIPTION OF THE FIGURES
【図 1 】  【Figure 1 】
田植機を示す左側面図。  The left view which shows a rice transplanter.
【図 2】  【Figure 2】
機体フレームを示す平面図。  FIG. 2 is a plan view showing a body frame.
【図 3】  [Figure 3]
同左側而図。  FIG.
【図 4】  [Fig. 4]
原動機部を示す左断面側面図。  The left sectional side view which shows a motor part.
【図 5】  [Figure 5]
ステアリングシャフ ト支持フレーム構成体を示す正面図。  FIG. 2 is a front view showing a steering shaft support frame structure.
【図 6】  [Fig. 6]
同平面図。 ステツプ支持フレーム構成体を示す背面図。 FIG. The rear view which shows a step support frame structure.
【図 8 】  [Fig. 8]
ステツプを示す平面図。 FIG. 4 is a plan view showing steps.
【図 9 】  [Fig. 9]
ボンネッ 卜を示す正面図。 The front view which shows a bonnet.
【図 1 0 】  [Fig. 10]
施肥機を示す左側面図。 The left view which shows a fertilizer.
【図 1 1 】  [Fig. 11]
他実施例としてのボンネッ トを示す左断面側面図。 The left sectional side view which shows the bonnet as another Example.
【図 1 2 】  [Fig. 1 2]
ステアリング機構を示す側面図。 FIG. 4 is a side view showing a steering mechanism.
【図 1 3 】  [Fig. 13]
トルクジエネレー夕とステアリングケースとを示す側面断面図。  FIG. 4 is a side cross-sectional view showing a torque generator and a steering case.
【図 1 4】  [Fig. 14]
トルクジエネレー夕を示す平面図。  FIG.
【図 1 5 】  [Fig. 15]
ステアリ ングケースを示す底面図。 FIG. 4 is a bottom view showing the steering case.
【図 1 6 】  [Fig. 16]
キースィ ツチパネルを示す側面図。 The side view which shows a key switch panel.
【図 1 7 】  [Fig. 17]
同正面図。 FIG.
【図 1 8 】  [Fig. 18]
同平面図。 発明を実施するための最良の形態 FIG. BEST MODE FOR CARRYING OUT THE INVENTION
以下に、 本発明の一実施例について図面を参照しながら具体的に説明 する。 尚、 本実施例では、 本発明に係る農作業機として田植機 1 を例に とり説明しているが、 本発明に係る農作業機は、 田植機 1に限定される ことなく、 トラクタ、 コンバイン、 野菜移植機などの各種農作業に用い られる作業機にも適用できるものである。  Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings. In this embodiment, the rice transplanter 1 is described as an example of the agricultural working machine according to the present invention. However, the agricultural working machine according to the present invention is not limited to the rice transplanter 1, but may be a tractor, a combine, or a vegetable. It can also be applied to work machines used for various agricultural work such as transplanters.
田植機 1は、 図 1 に示すように、 自走可能に構成した走行機体 2の後 部に植付機 3を昇降機構 4を介して昇降可能に連設している。  As shown in FIG. 1, the rice transplanter 1 has a planting machine 3 connected via a lifting mechanism 4 to a rear part of a traveling body 2 configured to be self-propelled so as to be able to move up and down.
走行機体 2は、 図 1 に示すように、 機体フ レーム 5の下方に走行部 6 を配設する一方、 機体フ レーム 5の前部に原動機部 7を配設し、 同原動 機部 Ίの後方位置に運転操作部 8を配設している。  As shown in Fig. 1, the traveling body 2 has a traveling section 6 below the body frame 5 and a prime mover section 7 at the front of the body frame 5, and has a prime mover section 、. The driving operation unit 8 is arranged at the rear position.
以下に、 走行機体 2の各部の構造について詳細に説明する。  Hereinafter, the structure of each part of the traveling body 2 will be described in detail.
[機体フレーム 5 ]  [Airframe 5]
まず、 機体フ レーム 5の構造について説明すると、 機体フレーム 5は 、 図 1〜図 3に示すように、 前後方向に向けて伸延させるとともに略中 央部から後側を上方に向けて屈曲させた左右一対のセン夕ーフ レーム構 成体 9 , 10 の前端部間に中央部分を左右幅方向に向けて伸延させるとと もに左右側部で屈曲させて左右側部を後方に向けて伸延させた平面視略 コ字状の円筒状の前側フ レーム構成体 11 を架設するとともに、 センタ 一フ レーム構成体 9，10 の前側中途部間に左右幅方向に向けて伸延させ た中空矩形状の予備苗載台支持フ レーム構成体 12 を架設し、 また、 セ ン夕ーフレーム構成体 9， 10 の中途部間に左右幅方向に向けて伸延させ た円筒状のステ ップ支持フ レーム構成体 13 と正面視で略門型の円筒状 の座席支持フ レーム構成体 14 の基端部とを架設し、 さらには、 セン夕 一フ レーム構成体 9，10 の後端部間に背面視で略門型の中空矩形状のリ ャフレーム構成体 15の上部を架設している。 また、 機体フ レーム 5は、 前側フレーム構成体 11 の中央部と予備苗 載台支持フレーム構成体 12の中央部との間にェンジン 16 を載置するた めの矩形平板状のエンジン支持体 17 を前後方向に向けて伸延させた状 態で架設しており、 同エンジン支持体 17 の後端には、 ステアリ ング機 構 18を支持するための矩形平板状のステアリング支持体 19を延設して いる。 First, the structure of the fuselage frame 5 will be described. As shown in FIGS. 1 to 3, the fuselage frame 5 is extended in the front-rear direction, and is bent substantially upward from the center to the rear. Between the front ends of the pair of left and right center frame members 9 and 10, the central portion is extended in the left and right width direction, and the left and right portions are bent and the left and right portions are extended rearward. A hollow rectangular front frame member 11 with a substantially U-shape in a plan view and a center rectangular frame member 9, 10 extending in the left-right width direction. A spare stepping frame supporting frame structure 12 is erected, and a cylindrical step supporting frame structure extending in the left-right width direction between the middle portions of the sun frame structures 9 and 10. 13 and a substantially gate-shaped cylindrical seat support frame in front view The base end of the adult 14 is erected, and the upper part of a substantially rectangular hollow frame-shaped rear frame structure 15 in rear view is erected between the rear ends of the center frame members 9 and 10. are doing. The body frame 5 is provided with a rectangular flat plate-shaped engine support 17 for mounting the engine 16 between the center of the front frame structure 11 and the center of the spare seedling support frame structure 12. The engine support 17 is provided with a rectangular flat steering support 19 for supporting a steering mechanism 18 at the rear end thereof. ing.
また、 機体フ レーム 5は、 予備苗載台支持フ レーム構成体 12 の左右 端部に予備苗載台 20を構成する予備苗載台支持支柱 21の基端部をブラ ケッ ト 22 を介してそれぞれ取付けており、 かかる予備苗載台支持フ レ ーム構成体 12の左右端部に前側フレーム構成体 1 1の左右端部を連結し 、 これら予備苗載台支持フレーム構成体 12 と前側フレーム構成体 11の 右側部間にバッテリ一23 を載置するための矩形平板状のバッテリ一支 持体 24を架設し、 さらには、 セン夕一フ レーム構成体 9 , 10 と予備苗載 台支持フレーム構成体 12 との交差部近傍に左右一対のステップ支持支 柱 51，52を上方に向けて立設している。  Further, the body frame 5 is provided with a bracket 22 at the base end of the auxiliary seedling support column 21 that constitutes the auxiliary seedling platform 20 at the left and right ends of the auxiliary seedling platform support frame assembly 12. The left and right ends of the front frame structure 11 are connected to the left and right ends of the spare seedling mounting support frame structure 12, respectively. A rectangular plate-shaped battery support 24 for mounting the battery 23 is mounted between the right side of the structure 11, and furthermore, the auxiliary frame support 9, 10 and the spare seedling support are supported. A pair of left and right step support columns 51, 52 are erected upward near the intersection with the frame structure 12.
このよう に、 本実施例では、 左右一対のセ ンターフ レーム構成体 9 , 10 の前端部間に前側フレーム構成体 1 1 を横架するとともに、 同前側 フレーム構成体 1 1 の左右側部を予備苗載台支持フレーム構成体 12の左 右側部に連結しているため、 予備苗載台 20 の荷重を予備苗載台支持フ レーム構成体 12 の左右端部で受けるだけでなく前側フレーム構成体 1 1 の左右端部でも受けることになり、 これら予備苗載台支持フレーム構成 体 12 と前側フレーム構成体 1 1 とが協働して重量物である予備苗載台 20を支持している。  As described above, in this embodiment, the front frame structure 11 is laid between the front ends of the pair of left and right center frame structures 9 and 10, and the left and right sides of the front frame structure 11 are spared. Because it is connected to the left and right sides of the seedling supporting frame structure 12, the load of the spare seedling mounting 20 is not only received by the left and right ends of the spare seedling supporting frame structure 12, but also the front frame structure 11 are also received at the left and right end portions, and the spare seedling mounting support frame structure 12 and the front frame structure 11 cooperate to support the spare seedling mounting table 20 which is heavy.
これにより、 予備苗載台支持フ レーム構成体 12 の強度を確保するた めに予備苗載台支持フ レーム構成体 12 を太く形成する必要がなくなり 、 予備苗載台支持フレーム構成体 12の軽量化や低廉化を図るとともに 、 機体全体の軽量化や低廉化を図っている。 As a result, it is not necessary to make the spare seedling supporting frame support frame structure 12 thick to secure the strength of the spare seedling mounting support frame structure 12. And cost reduction The weight and cost of the entire aircraft are being reduced.
また、 機体フ レーム 5は、 図 4〜図 6に示すように、 前側フ レーム構 成体 1 1 の中央上部に左右一対のステアリ ングシャフ ト支持フレーム構 成体 25，26の前端部を取付け、 両ステアリ ングシャフ ト支持フレーム構 成体 25，26 の後端部にステアリ ングシャフ ト 27 を回動自在に支持する 円筒状のステアリングボス ト 28を略 U字状のブラケッ ト 29を介して取 付けている。  As shown in FIGS. 4 to 6, the body frame 5 has a pair of left and right steering shaft support frame structures 25 and 26 attached to the front ends of the front frame structure 11 at the upper center thereof. A cylindrical steering boss 28 for rotatably supporting a steering shaft 27 is attached to a rear end of the shaft-shaft supporting frame members 25 and 26 via a substantially U-shaped bracket 29.
さらに、 機体フ レーム 5は、 図 2、 図 3及び図 7に示すように、 門型 のリャフレーム構成体 15 の左右側部に左右一対の円筒状のステップ支 持フレーム構成体 30， 31の基端部を取付けるとともに、 これら リャフレ —ム構成体 1 5 の角部とステップ支持フレーム構成体 30，31 の基端部と の間にリャデッキ支持ブラケッ ト 32， 33を取付けている。 各ステップ支 持フレーム構成体 30 , 31 は、 基端部を左右幅方向に向けて伸延させると ともに、 中途部で屈曲して、 先端部を前後方向に向けて伸延させた形状 となっている。  Further, as shown in FIGS. 2, 3, and 7, the body frame 5 includes a pair of left and right cylindrical step supporting frame members 30, 31 on the left and right sides of the gate-shaped lya frame member 15. The base end is mounted, and the rear deck support brackets 32, 33 are mounted between the corners of these frame structures 15 and the base ends of the step support frame structures 30, 31. Each of the step support frame members 30 and 31 has a shape in which the base end extends in the left-right width direction, and is bent in the middle, and the distal end extends in the front-rear direction. .
[走行部 6 ]  [Traveling part 6]
次に、 走行部 6の構造について説明すると、 走行部 6は、 図 1〜図 3 に示すように、 機体フレーム 5に設けたステアリ ング支持体 19 の後部 にミ ッシヨンケース 34の前部を取付け、 同ミ ツションケース 34の前部 に左右一対のフ ロン トアクスルケ一ス 35 , 36 を連動連結し、 各フ ロン ト アクスルケース 35， 36に前車輪 37を連動連結している。  Next, the structure of the traveling section 6 will be described. As shown in FIGS. 1 to 3, the traveling section 6 has a front portion of the mission case 34 attached to a rear portion of the steering support 19 provided on the body frame 5. A pair of left and right front axle cases 35 and 36 are connected to the front of the mission case 34 in an interlocked manner, and front wheels 37 are connected to each front axle case 35 and 36 in an interlocked manner.
また、 走行部 6は、 ミ ッションケース 34 の後部に左右幅方向に向け て伸延させたリャアクスルケ一ス 38 を連動連結し、 同リャアクスルケ ース 38の左右端部に後車輪 39をそれぞれ連動連結している。 かかる リ ャアクスルケース 38 は、 左右側上部を機体フレーム 5のリャフレーム 構成体 15の基端部に取付けている。 このように、 機体フレーム 5のステアリ ング支持体 1 9 にミ ッション ケース 34を取付けるとともに、 同ミ ツションケース 34の後端部に連設 したリャアクスルケース 38 を機体フレーム 5のリャフレーム構成体 15 に取付けることによって、 機体フレーム 5 とミ ッショ ンケース 34 及び リャアクスルケース 38 とが一体となって強固な機枠を構成しており、 しかも、 .図 3に示すように、 中途部から後上方に向けて屈曲させたセン 夕一フレーム構成体 9 , 10の後部と リャフレーム構成体 1 5 とミ ッション ケース 34及びリャアクスルケ一ス 38 とで略三角形状の トラス構造を構 成しており、 これらによって、 機体の剛性を高めて、 機体の走行安定性 を向上させている。 In addition, the traveling section 6 is connected to a rear axle case 38 extending in the left and right width direction in an interlocking manner at the rear of the mission case 34, and is connected to a rear wheel 39 at the left and right ends of the rear axle case 38 in an interlocking manner. I have. The rear axle case 38 has the upper left and right sides mounted on the base end of the rear frame structure 15 of the body frame 5. In this manner, the mission case 34 is attached to the steering support 19 of the body frame 5, and the rear axle case 38 connected to the rear end of the mission case 34 is attached to the rear frame structure of the body frame 5. 15 to form a strong machine frame that integrates the machine frame 5 with the mission case 34 and rear axle case 38, and, as shown in Fig. 3, The rear parts of the frame 9 and 10 bent toward, the rear frame structure 15, the mission case 34 and the rear axle case 38 constitute a substantially triangular truss structure. This enhances the rigidity of the fuselage and improves the running stability of the fuselage.
また、 本実施例では、 平面視においてミ ッションケース 34 とフロン トアクスルケ一ス 35 , 36 とで形成される凹部に左右のセン夕一フレーム 構成体 9 , 10 を貫通させることによって、 センターフレーム構成体 9 , 10 の位置を従来よ り も低く して、 機体の低重心化を図って走行安定性を向 上させるとともに、 車高を低くすることによって乗降性を向上させてい る。  In the present embodiment, the left and right center frame members 9 and 10 are passed through recesses formed by the mission case 34 and the front axle casings 35 and 36 in a plan view, so that the center frame member 9 is formed. The positions of, 10 are lower than before to lower the center of gravity of the fuselage to improve running stability, and to lower the vehicle height to improve getting on and off.
[原動機部 7 ]  [Motor Engine Unit 7]
次に、 原動機部 7の構造について説明すると、 原動機部 7は、 図 1〜 図 4に示すように、 機体フレーム 5のエンジン支持体 17 にエンジン 16 を載設し、 同エンジン 16の上方に燃料タンク 40を配設するとともに、 エンジン 16の左側部にマフラー 59を連設し、 同マフラー 59の前端部に 排気筒 60 を前側下方に向けて突設し、 同排気筒 60 の先端部に排気口 61 を形成しており、 これらエンジン 16 や燃料夕ンク 40 やマフラー 59 をボンネッ 卜 62で被覆している。  Next, the structure of the prime mover unit 7 will be described. As shown in FIGS. 1 to 4, the prime mover unit 7 mounts the engine 16 on the engine support 17 of the body frame 5 and places the fuel above the engine 16. Along with the tank 40, a muffler 59 is connected to the left side of the engine 16, and an exhaust pipe 60 projects forward and downward from the front end of the muffler 59. A mouth 61 is formed, and the engine 16, fuel tank 40 and muffler 59 are covered with a bonnet 62.
また、 原動機部 7は、 エンジン 16 の後方左側部と前方右側部とに駆 動軸 41，42をそれそれ突出させており、 エンジン 16の後方左側部に突 出させた駆動軸 41 には、 走行部 6に動力を伝達するための走行動力伝 達機構 43を連動連結する一方、 エンジン 16の前方右側部に突出させた 駆動軸 42には、 発電機構 44を連動連結している。 In the engine unit 7, the drive shafts 41 and 42 project from the rear left portion and the front right portion of the engine 16, respectively, and project from the rear left portion of the engine 16. A driving power transmission mechanism 43 for transmitting power to the traveling section 6 is interlocked and connected to the driven drive shaft 41, while a drive shaft 42 protruding to the front right side of the engine 16 is connected to a power generation mechanism 44. Are linked.
すなわち、 原動機部 7は、 エンジン 16の後方左側部に駆動軸 41 を突 設し、 同駆動軸 41の先端部に走行動力伝達機構 43の一部を構成するべ ル ト式無段階変速の変速装置 45 を連動連結するとともに、 同変速装置 45 の左側部に同軸上に植付機 3等を油圧駆動するための油圧ポンプ 46 を取付け、 同油圧ポンプ 46 にもエンジン 16 の駆動軸 41 を連動連結し ている。 走行動力伝達機構 43 は、 エンジン 16 の駆動軸 41 に変速装置 45の出力側ブーリ一 47を取付ける一方、 ミ ツションケース 34の前方左 側部に突出させた入力軸 48 に入力側プーリー 49 を取付け、 これら出力 側ブーリ一 47と入力側ブーリ一49 との間に伝動ベル ト 50を懸架してお り、 エンジン 16の動力を変速装置 45で変速した後にミ ヅシヨンケース 3 とフロン トアクスルケ一ス 35，36 ゃリャアクスルケース 38 を介して 前後車輪 37 , 39に伝達している。  That is, the prime mover unit 7 has a belt-type stepless speed-change transmission in which a drive shaft 41 protrudes from the rear left portion of the engine 16 and a part of the traveling power transmission mechanism 43 is formed at the tip of the drive shaft 41. A hydraulic pump 46 for hydraulically driving the planting machine 3 etc. is mounted coaxially on the left side of the transmission 45, and the drive shaft 41 of the engine 16 is also linked to the hydraulic pump 46. Connected. The traveling power transmission mechanism 43 has an output pulley 47 of a transmission 45 attached to a drive shaft 41 of the engine 16, and an input pulley 49 attached to an input shaft 48 protruding from the front left side of the mission case 34. A transmission belt 50 is suspended between the output side bulge 47 and the input side bulge 49. After the power of the engine 16 is shifted by the transmission 45, the mission case 3 and the front axle case 35 , 36 伝 達 through the rear axle case 38 to the front and rear wheels 37, 39.
一方、 原動機部 7は、 エンジン 16の前方右側部に駆動軸 42を突設し 、 同駆動軸 42の先端部に発電機構 44を連動連結しており、 かかる発電 機構 44は、 エンジン 16の駆動軸 42の先端部に出力側ブーリ一53 を取 付ける一方、 機体フレーム 5の右側のセンターフレーム構成体 10 の前 側部に立設した発電機支持支柱 54 と右側のステツプ支持支柱 52 との間 に発電機 55 を取付け、 同 ¾電機 55の入力軸 56 に入力側ブーリ一 57を 取付け、 これら出力側プーリ一 53 と入力側プーリ一 57 との間に伝動べ ルト 58を懸架している。  On the other hand, the prime mover unit 7 has a drive shaft 42 protruding from the front right portion of the engine 16, and a power generating mechanism 44 operatively connected to a tip end of the drive shaft 42. The power generating mechanism 44 drives the engine 16. The output side bulge 53 is attached to the tip of the shaft 42, and between the generator support column 54 and the right step support column 52 erected on the front side of the center frame structure 10 on the right side of the body frame 5. A generator 55 is mounted on the input shaft 56 of the electric motor 55, and an input burry 57 is mounted on the input shaft 56. A transmission belt 58 is suspended between the output pulley 53 and the input pulley 57.
このように、 本実施例では、 エンジン 16 の左右側方に駆動軸 41，42 をそれそれ突出させるとともに、 エンジン 16 の左側方に走行動力伝達 機構 43を配設する一方、 エンジン 16の右側方に発電機構 44を配設し 、 エンジン 16 の左側方に突設した駆動軸 41 に走行動力伝達機構 43 を 連動連結し、 エンジン 16 の右側方に突設した駆動軸 42 に発電機構 44 を連動連結しているため、 運転操作部 8の前方に配設したエンジン 16 のさらに前方に発電機構 44 を配設していた従来の農作業機に比べて、 運転操作部 8よりも前方側の機体長を可及的に短くすることができる。 As described above, in the present embodiment, the drive shafts 41 and 42 are respectively protruded to the left and right sides of the engine 16, and the traveling power transmission mechanism 43 is disposed on the left side of the engine 16 while the right side of the engine 16 is Power generation mechanism 44 The driving power transmission mechanism 43 is linked to the drive shaft 41 projecting to the left of the engine 16, and the power generation mechanism 44 is linked to the drive shaft 42 projecting to the right of the engine 16. The length of the fuselage on the front side of the operation unit 8 should be as short as possible, compared to a conventional agricultural work machine in which the power generation mechanism 44 is provided further ahead of the engine 16 provided in front of the unit 8. Can be.
これにより、 運転操作部 8からの前方視界がエンジン 16 や発電機構 44 を被覆するボンネッ ト 62 によって遮られることがなくなり、 走行時 の安全性を向上させることができる。  As a result, the front view from the driving operation unit 8 is not obstructed by the bonnet 62 covering the engine 16 and the power generation mechanism 44, and safety during traveling can be improved.
また、 機体の前方側の機体長が短くなることで、 最小旋回半径を小さ くすることができ、 旋回性能を向上させることができ、 しかも、 前方側 の機体長が短くなる分だけ機体の前後長も短くなり、 機体の小型化を図 ることができる。  In addition, since the length of the fuselage on the front side of the fuselage is reduced, the minimum turning radius can be reduced, and the turning performance can be improved. The length is also shortened, and the size of the aircraft can be reduced.
特に、 エンジン 16 をはさんで発電機構 44 とは反対側にエンジン 16 の排気口 61 を配設しているため、 エンジン 16 の排気口 61 から排出さ れる高温の排気が発電機構 44 とは反対側に排出されることになり、 排 気が直接的に発電機構 44 に吹きかかることがなくなり、 これによつて 、 エンジン 16からの排気によつて発電機構 44の外観が汚損されるのを 防止することができるとともに、 発電機構 44 の周辺の温度上昇を防止 することができて、 発電機構 44 の高温に起因する故障を未然に防止す ることができる。  In particular, since the exhaust port 61 of the engine 16 is provided on the opposite side of the engine 16 across the engine 16, the high-temperature exhaust discharged from the exhaust port 61 of the engine 16 is opposite to the generator 44. The exhaust is not directly blown to the power generation mechanism 44, thereby preventing the exhaust of the engine 16 from damaging the appearance of the power generation mechanism 44. In addition to this, it is possible to prevent a temperature rise around the power generation mechanism 44 and prevent a failure of the power generation mechanism 44 due to a high temperature.
しかも、 機体フレーム 5に形成したステップ支持支柱 52 で発電機構 44 の一部を構成する発電機 55 を支持しているため、 ステップ支持支柱 52 が、 発電機 55 を支持するための支柱としても機能することになり、 発電機 55 を支持するための支持部材を別途設ける必要がなくなり、 こ れによって、 部品点数を削減することができ、 部品管理コス トや製造コ ス トの低廉化を図ることができるとともに、 機体の軽量化を図ることが できる。 Moreover, since the generator 55 that forms a part of the power generation mechanism 44 is supported by the step support column 52 formed on the body frame 5, the step support column 52 also functions as a column for supporting the generator 55. Therefore, it is not necessary to separately provide a support member for supporting the generator 55, thereby reducing the number of parts, and reducing the parts management cost and the manufacturing cost. And reduce the weight of the aircraft. it can.
また、 本実施例では、 左右一対のセンターフ レーム構成体 9 , 10 の前 端部間に前側フ レーム構成体 1 1 を横架するとともに、 同前側フ レーム 構成体 1 1 の左右端部を予備苗載台支持フ レーム構成体 12 の左右側部に 連結することによって、 図 2に示すように、 平面視において、 左右一対 のセンターフレーム構成体 9， 10の前側部と前側フレーム構成体 1 1の中 途部と予備苗載台支持フ レーム構成体 12 の中途部とで囲まれた閉ルー プ状の領域. S1 が形成されるとともに、 同じく平面視において、 セン夕 —フ レーム構成体 9，10 の前方左右側部にセンターフ レーム構成体 9 , 10 の前側部と前側フ レーム構成体 1 1 の左右側部と予備苗載台支持フ レー ム構成体 12 の左右側部とで囲まれた左右一対の閉ループ状の領域 S2 , S3が形成されている。  Further, in this embodiment, the front frame component 11 is laid between the front ends of the pair of left and right center frame components 9 and 10, and the left and right ends of the front frame component 11 are connected to each other. As shown in FIG. 2, by connecting to the left and right sides of the spare seedling support frame supporting frame structure 12, the front side of the pair of left and right center frame structures 9 and 10 and the front frame structure 1 can be seen in plan view. A closed-loop area surrounded by the middle of 1 and the frame of the spare seedling support frame structure 12. S1 is also formed, and also in the plan view, the sensu-frame structure The front left and right sides of the center frame components 9 and 10, the left and right sides of the front frame component 11 and the left and right sides of the spare seedling support frame component 12 are located on the front left and right sides of the components 9 and 10, respectively. A pair of left and right enclosed closed loop regions S2 and S3 are formed .
そして、 本実施例では、 平面視において、 中央の領域 S 1 の内部にェ ンジン 16 と変速装置 45 を配設するとともに、 左側の領域 S2 の内部に 油圧ポンプ 46 を配設し、 右側の領域 S3 の内部にバッテリ一23 を配設 している。  In this embodiment, in plan view, the engine 16 and the transmission 45 are arranged inside the central area S 1, and the hydraulic pump 46 is arranged inside the left area S 2, and the right area Battery 23 is installed inside S3.
このように、 重量物であるエンジン 16 を中心に同じく重量物である バッテリー 23 と油圧ポンプ 46 とを左右に振り分けて配置して、 左右の 重量バランスを良好なものとし、 機体の走行安定性を向上させている。  In this way, the battery 23 and the hydraulic pump 46, which are also heavy, are distributed around the heavy engine 16 and the left and right to improve the weight balance between the left and right, and improve the running stability of the aircraft. Have improved.
また、 平面視で中央の領域 S 1 の内部にエンジン 16 と変速装置 45 を 配設しているため、 エンジン 16や変速装置 45の周囲にセン夕一フレー ム構成体 9，10の前側部と前側フレーム構成体 1 1の中途部と予備苗載台 支持フ レーム構成体 12 の中途部とが存在することにな り、 セン夕一フ レーム構成体 9，10の前側部と前側フレーム構成体 1 1の中途部と予備苗 載台支持フ レーム構成体 12 の中途部とが畦等の障害物からエンジン 1 6や変速装置 45 を保護する保護部材として機能することになり、 これ らの保護部材によりエンジン 16や変速装置 45の破損を防止することが でき、 農作業機の長寿命化を図ることができ、 しかも、 エンジン 16 や 変速装置 45 を保護するための保護部材を別途設ける必要がなく なり、 これによつても、 農作業機の軽量化や低廉化を図ることができる。 In addition, since the engine 16 and the transmission 45 are disposed inside the central area S 1 in plan view, the engine 16 and the transmission 45 are surrounded by the front sides of the transmission frame members 9 and 10 around the transmission 16. The middle part of the front frame structure 1 1 and the middle part of the spare seedling mounting support frame structure 12 are present, and the front parts of the front and rear frame structures 9 and 10 and the front frame structure are present. 11 The middle part of 1 and the middle part of the spare seedling mounting support frame structure 12 will function as a protection member to protect the engine 16 and the transmission 45 from obstacles such as ridges. These protective members can prevent damage to the engine 16 and the transmission 45, extend the life of the agricultural work machine, and additionally provide a separate protective member to protect the engine 16 and the transmission 45. This eliminates the necessity, so that the weight and cost of the agricultural work equipment can be reduced.
また、 平面視で左側の領域 S2の内部に油圧ポンプ 46を配設している ため、 汕圧ポンプ 46の周囲にセン夕ーフレーム構成体 9，10の前側部と 前側フレーム構成体 1 1の側部と予備苗載台支持フレーム構成体 12の側 部とが存在することになり、 センターフ レーム構成体 9，10 の前側部と 前側フレーム構成体 1 1の側部と予備苗載台支持フレーム構成体 12の側 部とが畦等の障害物から油圧ポンプ 46 を保護する保護部材として機能 することになり、 これらの保護部材により油圧ポンプ 46 の破損を防止 することができ、 農作業機の長寿命化を図ることができ、 しかも、 油圧 ポンプ 46 を保護するための保護部材を別途設ける必要がなくなり、 こ れによっても、 農作業機の軽量化や低廉化を図ることができる。  In addition, since the hydraulic pump 46 is disposed inside the area S2 on the left side in a plan view, the front sides of the front and rear frame components 9 and 10 and the front frame 11 Part and the side of the spare seedling supporting frame structure 12, the front side of the center frame components 9 and 10, the side of the front frame forming 11, and the spare seedling supporting frame. The side of the component 12 functions as a protection member for protecting the hydraulic pump 46 from obstacles such as ridges, and the protection member can prevent the hydraulic pump 46 from being damaged. The service life can be prolonged, and it is not necessary to separately provide a protective member for protecting the hydraulic pump 46. This also makes it possible to reduce the weight and cost of the agricultural work machine.
一方、 平面視で右側の領域 S3 の内部にバッテリー 23 を配設している ため、 バッテリ一23 の周囲にセン夕一フレーム構成体 9 , 10の前側部と 前側フレーム構成体 1 1の側部と予備苗載台支持フレーム構成体 12の側 部とが存在することになり、 センターフ レーム構成体 9 , 10 の前側部と 前側フレーム構成体 1 1の側部と予備苗載台支持フレーム構成体 12の側 部とが畦等の障害物からバッテリー 23 を保護する保護部材として機能 することになり、 これらの保護部材によ りバッテリー 23 の破損を防止 することができ、 農作業機の長寿命化を図ることができ、 しかも、 ノ ツ テリー 23 を保護するための保護部材を別途設ける必要がなくなり、 こ れによっても、 農作業機の軽量化や低廉化を図ることができる。  On the other hand, since the battery 23 is disposed inside the area S3 on the right side in a plan view, the front sides of the sensor frames 9 and 10 and the sides of the front frame member 11 around the battery 23. And the side of the spare seedling support frame structure 12, the front sides of the center frame components 9 and 10, the side of the front frame structure 11, and the spare seedling support frame configuration The side of the body 12 functions as a protection member for protecting the battery 23 from obstacles such as ridges, and the protection member can prevent the battery 23 from being damaged, thereby extending the life of the agricultural work machine. In addition, it is not necessary to separately provide a protection member for protecting the notebook 23, and thus, the weight and cost of the agricultural work machine can be reduced.
これらエンジン 16 ゃバッテリ一 23 や油圧ポンプ 46 は、 図 1、 図 4 及び図 8に示すように、 平板状のフロン トステップ 63で被覆されてい る。 These engine 16, battery 23 and hydraulic pump 46 are covered with a flat front step 63, as shown in FIGS. 1, 4 and 8. You.
かかるフ ロン トステップ 63 は、 前側中央部に前端部の一部を閧放さ せた切欠部 64 を形成して、 平面視で略 U字状に形成しており、 その二 又状となっている先端部分をエンジン 16 の左右側方に向けて伸延させ た状態で機体フレーム 5に形成したステツプ支持支柱 51，52の上部に載 設している。  The front step 63 is formed in a substantially U-shape in a plan view by forming a cutout portion 64 in the front central portion with a part of the front end portion being opened, and is formed into a bifurcated shape. It is mounted on top of step support columns 51 and 52 formed on the fuselage frame 5 with its leading end extending toward the left and right sides of the engine 16.
また、 フ ロン トステップ 63は、 二又状の前部に形成した切欠部 64に 前側カバ一 65 を開閉自在に配設しており、 同前側カバ一 65 は、 下端部 に略円筒状のボス 66 , 66を形成し、 同ボス 66 , 66を前側フレーム構成体 11 の中央部に揷入することによって、 前側フ レーム構成体 11 を中心に 前後に開閉可能となっている。  In the front step 63, a front cover 65 is provided so as to be openable and closable in a notch 64 formed in a forked front portion, and the front cover 65 has a substantially cylindrical shape at a lower end portion. By forming the bosses 66, 66 and inserting the bosses 66, 66 into the center of the front frame component 11, the bosses 66, 66 can be opened and closed back and forth around the front frame component 11.
そして、 前側カバ一 65 の内側方にエンジン 16 のエンジンオイル検油 兼給油口 67を位置させている。  Further, an engine oil inspection and refueling port 67 of the engine 16 is located inside the front cover 65.
このように、 本実施例では、 フロン トステッ プ 63 の前側中央部に切 欠部 64を形成することにより、 フロン トステップ 63を平面視で略 U字 状に形成したことにより、 フロン トステップ 63 を取外す際にフ ロン ト ステップ 63 とエンジン 16等の機体前部に位置する部材とが干涉しにく くなり、 フ ロ ン トステップ 63 を容易に着脱することができ、 フ ロン ト ステップ 63 を取外して行うメンテナンス作業の作業性を向上させてい る。  As described above, in the present embodiment, the notch 64 is formed in the front central portion of the front step 63, and the front step 63 is formed in a substantially U-shape in plan view. When the front step 63 is removed, the front step 63 and the components located at the front of the fuselage such as the engine 16 become hard to dry, and the front step 63 can be easily attached and detached. The workability of the maintenance work that is performed by removing it is improved.
特に、 フ ロ ン トステップ 63の前側中央部に形成した切欠部 64に開閉 蓋と して機能する前側カバ一 65 を配設することによって、 フ ロ ン トス テップ 63 を取外すことなく前側力バー 65 を開閉するだけで、 エンジン 16 の下部やエンジン 16 に連動連結した走行動力伝達機構 43 のメンテ ナンス作業を行うことができるようになり、 メ ンテナンス作業の作業性 を向上させている。 8 しかも、 前側カバー 65 の内側方にエンジン 16 のエンジンオイル検油 兼給油口 67を位置させることによって、 フロ ン トステップ 63を取外す ことなく前側力バー 65 を開閉するだけで、 エンジンオイルの検油ゃ給 油作業を行うことができるようになり、 エンジンオイルの検油ゃ給油作 業の作業性を向上させている。 In particular, by disposing a front cover 65 that functions as an opening / closing lid in a notch 64 formed in the front center of the front step 63, the front force bar can be removed without removing the front step 63. By simply opening and closing the 65, the maintenance work of the lower part of the engine 16 and the traveling power transmission mechanism 43 linked to the engine 16 can be performed, improving the workability of the maintenance work. 8 In addition, by locating the engine oil inspection and oil supply port 67 of the engine 16 inside the front cover 65, the engine oil inspection can be performed simply by opening and closing the front force bar 65 without removing the front step 63. Oil and oil refueling operations can now be performed, improving workability in engine oil inspection and refueling operations.
また、 フロン トステップ 63の前側中央部に形成した切欠部 64には、 開閉蓋に替えてウィ ンチやポンプ等のアタッチメン トを装着できるよう にすることもできる。  In addition, the notch 64 formed at the front central portion of the front step 63 can be provided with an attachment such as a winch or a pump instead of the open / close lid.
かかるフロン トステップ 63 の上部には、 前方から順にボンネッ ト 62 とフロン トコラム力バ一 68 を載設しており、 ボンネッ ト 62 によってェ ンジン 16 と燃料夕ンク 40の前方及び左右側方を被覆するとともに、 フ ロン トコラムカバ一 68 によってエンジン 16 と燃料夕ンク 40 の後方を 被覆している。 これらボンネッ ト 62 とフロン トコラムカバー 68 とは、 一体となって機体前部を構成しており、 ボンネッ ト 62 が前側ボンネッ ト構成体として機能する一方、 フロン トコラムカバ一 68 が後側ボンネ ッ ト構成体として機能するようになっている。  A bonnet 62 and a front column force bar 68 are mounted on the front of the front step 63 in this order from the front. The bonnet 62 covers the front and left and right sides of the engine 16 and the fuel tank 40. In addition, a front column cover 68 covers the rear of the engine 16 and the fuel tank 40. The bonnet 62 and the front column cover 68 integrally form a front part of the fuselage.The bonnet 62 functions as a front bonnet structure, while the front column cover 68 serves as a rear bonnet. It is designed to function as a structure.
ボンネッ ト 62 は、 図 5及び図 9に示すように、 下部の左右幅よりも 上部の左右幅を狭くすることによって正面視で略中央部よりも上部側に 凹部 69，69を形成している。 かかる凹部 69は、 ボンネッ ト 62の左右側 面に連続する滑らかな曲面で形成している。  As shown in FIGS. 5 and 9, the bonnet 62 has recesses 69, 69 formed on the upper side of the substantially central portion in a front view by making the left and right widths of the upper portion smaller than the left and right widths of the lower portion. . The recess 69 is formed as a smooth curved surface that is continuous with the left and right side surfaces of the bonnet 62.
このように、 本実施例では、 ボンネッ ト 62 の上部に正面視で凹部 69 を形成することによって、 ボンネッ ト 62 の下方側部に設けたフロン ト ステップ 63の上面を作業者が移動する際に、 ボンネッ ト 62の上部と作 業者との間隔を広くすることができ、 これにより、 走行機体 2の後部に 施肥機 135 を搭載した場合 （図 10 参照） に肥料を補給するため作業者 が肥料袋を持ってフロン トステップ 63上をボンネッ ト 62に沿つて移動 する際に、 肥料袋をボンネッ ト 62 の上部に形成した凹部を通過させる ことができるので、 肥料袋を運搬する作業者が楽な姿勢で余裕を持って フロン トステップ 63の上面を移動できる。 As described above, in the present embodiment, the recess 69 is formed in the upper part of the bonnet 62 when viewed from the front, so that when the worker moves on the upper surface of the front step 63 provided on the lower side of the bonnet 62, The distance between the upper part of the bonnet 62 and the operator can be increased, so that when the fertilizer applicator 135 is mounted on the rear part of the traveling vehicle 2 (see FIG. 10), the worker can use the fertilizer to replenish the fertilizer. Hold bag and move along front step 63 along bonnet 62 Since the fertilizer bag can be passed through the recess formed in the upper part of the bonnet 62, the operator carrying the fertilizer bag can easily move the upper surface of the front step 63 in a comfortable posture.
特に、 ボンネッ ト 62に形成した凹部 69を曲面で形成しているため、 仮に肥料袋の運搬時に肥料袋がボンネッ ト 62 に接触したとしても、 肥 料袋を損傷させることがなく、 肥料袋の破損により肥料が飛散し機体に 付着することによって鯖びが発生したり、 或いは、 飛散した肥料を掃除 する手間を未然に防止することができる。  In particular, since the concave portion 69 formed in the bonnet 62 is formed with a curved surface, even if the fertilizer bag comes into contact with the bonnet 62 when the fertilizer bag is transported, the fertilizer bag is not damaged, and the fertilizer bag is not damaged. Fertilizer is scattered due to damage and adheres to the airframe, so that mackerel can be generated, or the trouble of cleaning the scattered fertilizer can be prevented.
かかるボンネッ ト 62は、 前端下部に係止部 70を形成する一方、 後端 上部にロック部 71 を形成している。  The bonnet 62 has a locking portion 70 at the lower front end, and a locking portion 71 at the upper rear end.
すなわち、 ボンネッ ト 62 は、 図 4及び図 5に示すように、 前端下部 に係止部 70 としての舌片 70a を形成し、 一方、 ステアリ ングシャフ ト 支持フレーム構成体 25，26の中途部間に左右幅方向に伸延させたブラケ ッ ト Ί を横架し、 同ブラケッ ト 72 の中央下部に係止片 73 を設け、 同 係止片 73 に横長孔状の係止孔 74を穿設し、 同係止孔 74に前記舌片 70 aを挿入することによって、 機体フレーム 5にボンネッ ト 62 の前端部 を係止している。  That is, as shown in FIGS. 4 and 5, the bonnet 62 forms a tongue piece 70a as a locking portion 70 at a lower portion of the front end, and on the other hand, between the middle portions of the steering shaft support frame members 25 and 26. A bracket Ί extended in the left-right width direction is horizontally mounted, and a locking piece 73 is provided at the lower center of the bracket 72, and a locking hole 74 having a horizontally long hole shape is formed in the locking piece 73. By inserting the tongue 70 a into the locking hole 74, the front end of the bonnet 62 is locked to the body frame 5.
一方、 ボンネッ ト 62 は、 後側上部に開口 75 を形成し、 同開口 75 に 燃料夕ンク 40 の給油口 76 を位置させるとともに、 開口 75 に給油用の 給油口蓋 77を開閉自在に取り付け、 さらには、 開口 75の上端縁にロッ ク部 71 としての舌片 71 a を形成し、 同舌片 71 a に口ック部材であるノ ブネジ 81 を挿通するためのノブネジ挿通孔 78を穿設し、 一方、 ステア リ ングポス ト 28の上端部にブラケッ ト 79を前方に向けて突設し、 同ブ ラケッ ト 79 の前端部に雌ネジ 80 を取付けており、 ボンネッ ト 62 のノ ブネジ挿通孔 78 に挿通したノブネジ 81 を雌ネジ 80 に螺着することに より、 ボンネッ ト 62を機体に固定している。 かかるノブネジ 81は、 給 油口蓋 77 の内側に位置しており、 給油口蓋 77 を開き、 給油口蓋 77の 内側部にてノブネジ 81 を回動操作することによって、 ボンネッ ト 62の 口ック操作や口ック解除操作を行うようになつている。 On the other hand, in the bonnet 62, an opening 75 is formed at the upper rear side, a fuel supply port 76 for the fuel tank 40 is located in the opening 75, and a fuel supply lid 77 for refueling is attached to the opening 75 so as to be openable and closable. Is formed with a tongue piece 71 a as a lock part 71 at the upper end edge of the opening 75, and a knob screw insertion hole 78 for inserting a knob screw 81 as a hook member is formed in the tongue piece 71 a. On the other hand, a bracket 79 projects forward from the upper end of the steering post 28, and a female screw 80 is attached to the front end of the bracket 79. The knurled screw insertion hole 78 of the bonnet 62 The bonnet 62 is fixed to the fuselage by screwing the knob screw 81 inserted into the female screw 80 to the female screw 80. The knob screw 81 is It is located inside the oil cover 77, and by opening the fuel cover 77 and turning the knob screw 81 inside the fuel cover 77, the bonnet 62 can be opened and closed. I'm going to do it.
このように、 本実施例では、 ボンネッ ト 62に同ボンネッ ト 62を係止 するための係止部 70 と、 ボンネッ ト 62 をロックするためのロック部 71 とをそれそれ設けて、 同ロック部 71 を開閉蓋としての給油口蓋 77 で被覆するとともに、 同開閉蓋 （給油口蓋 77) の内側にてロック部 71 の口ック操作及び口ック解除操作が行えるようにしている。  As described above, in the present embodiment, the locking portion 70 for locking the bonnet 62 to the bonnet 62 and the locking portion 71 for locking the bonnet 62 are provided respectively, and the locking portion is provided. 71 is covered with a fuel filler lid 77 as an opening / closing lid, and the opening and closing operations of the lock part 71 can be performed inside the opening / closing lid (fuel filler lid 77).
そのため、 外観上にロック部 71 が露出しておらず、 ロ ック部 71 に作 業者の身体が接触することがなくなり、 口ックが解除されてボンネッ ト 62 が脱落して しまうのを複雑な構造とすることなく未然に防止するこ とができ、 安全性を向上させることができるとともに、 外観上にロック 部 71 が露出していないために、 デザイ ン上において良好なものとする ことができる。  As a result, the lock portion 71 is not exposed from the outside, so that the operator's body does not come into contact with the lock portion 71, and it is complicated that the lip is released and the bonnet 62 falls off. It is possible to improve the safety of the design, because the lock part 71 is not exposed from the outside. it can.
特に、 開閉蓋としてボンネッ ト 62 に開閉自在に設けた給油用の給油 口蓋 77を用いているため、 口ック部 71 を被覆するために開閉蓋を別途 設ける必要がなくなり、 構成する部品点数を削減することができ、 製造 コス トゃ部品管理コス 卜の低廉化や機体の軽量化を図ることができる。 ここで、 本実施例では、 ロック部 71 を被覆する開閉蓋として給油口 蓋 77 を用いているが、 図 1 1 に示すように、 ボンネッ ト 62の下端部に 開閉自在に設けた前側カバー 65 を開閉蓋と して用いることもできる。 尚、 図 11 中では、 前述した図 4における構成のものとほぼ同等の機能 を有する部材には、 同一の符号を用いている。  In particular, since the lubricating lid 77 for refueling, which is provided on the bonnet 62 so as to be openable and closable, is used as the lid, it is not necessary to provide a separate lid to cover the hook part 71. It is possible to reduce manufacturing costs and parts management costs and to reduce the weight of the aircraft. Here, in the present embodiment, the fuel filler cover 77 is used as the opening / closing cover for covering the lock portion 71. However, as shown in FIG. 11, the front cover 65 provided at the lower end of the bonnet 62 so as to be openable and closable. Can be used as an open / close lid. In FIG. 11, the same reference numerals are used for members having substantially the same functions as those in the configuration in FIG. 4 described above.
すなわち、 図 1 1 に示すように、 ボンネッ ト 62は、 前端下部にロック 部 71 としての舌片 71 a を形成し、 同舌片 71 a にロック部材としてのノ ブネジ 81を挿通するためのノブネジ揷通孔 78を穿設する一方、 ステア リ ングシャフ ト支持フレーム構成体 25 , 26の中途部間に左右幅方向に伸 延させたブラケッ ト 72 を横架し、 同ブラケッ ト 72 の中央部に雌ネジ 80 を形成し、 同雌ネジ 80 に舌片 71 a のノブネジ揷通孔 78 に挿通した ノブネジ 81 を螺着することによって、 機体フ レーム 5にボンネヅ ト 62 を螺着している。 かかるノブネジ 81 は、 前側カバー 65 の内側方に位置 しており、 前側カバ一 65によって被覆されている。 That is, as shown in FIG. 11, the bonnet 62 has a tongue piece 71 a as a lock portion 71 at the lower front end, and a knob screw 81 for inserting a knob screw 81 as a lock member into the tongue piece 71 a.一方 While drilling through hole 78, steer A bracket 72 extending in the left-right width direction is bridged between the middle portions of the ring shaft support frame members 25 and 26, and a female screw 80 is formed in the center of the bracket 72. The bonnet 62 is screwed to the body frame 5 by screwing the knob screw 81 inserted into the knob screw hole 78 of the tongue piece 71a. The knob screw 81 is located inside the front cover 65 and is covered by the front cover 65.
一方、 ボンネッ ト 62は、 後端後部に係止部 70 としての舌片 70aを形 成する一方、 フ ロン トコラムカバー 68 の前端上部に係止凹部 82 を形成 し、 同係止凹部 82に舌片 70aを係止している。  On the other hand, the bonnet 62 forms a tongue piece 70a at the rear end of the rear end as a locking portion 70, while forming a locking recess 82 at the upper front end of the front column cover 68, and The tongue piece 70a is locked.
このように、 ボンネッ ト 62のロック部 71 を被覆する開閉蓋として機 体の前端部に開閉自在に設けた前側カバー 65 を用いた場合には、 機体 の前方でボンネッ ト 62の着脱作業を行うことができ、 エンジン 16等の メンテナンス作業の作業性を向上させることができる。  As described above, when the front cover 65 that can be freely opened and closed at the front end of the fuselage is used as the opening / closing lid that covers the lock portion 71 of the bonnet 62, the bonnet 62 is attached and detached in front of the fuselage. Thus, the workability of maintenance work for the engine 16 and the like can be improved.
[運転操作部 8 ] '  [Driving operation section 8] ''
次に、 運転操作部 8の構造について説明すると、 運転操作部 8は、 図 1及び図 4に示すように、 機体フレーム 5の座席支持フ レーム構成体 14 の中央上部に座席 83 を取付け、 同座席 83 の前方に所定間隔を開け てステアリ ングシャフ ト 27 を回動自在に配設し、 同ステアリ ングシャ フ ト 27をステアリ ングポス 卜 28で回動自在に支持するとともに、 同ス テアリ ングポス ト 28 をフロン トコラム力バ一68 で被覆し、 同フロン ト コラムカバー 68の右側方に操作レバー （主変速レバ一 84aや苗継レバ一 84b ) や左右ブレーキペダル （図示省略） を配設する一方、 フ ロ ン トコ ラムカバ一 68 の左側方にクラ ッチペダル 85 を配設している。 図中、 104 は、 ステアリ ングシャフ ト 27 の上端に取付けたステアリ ングホィ ールである。  Next, the structure of the driving operation unit 8 will be described. As shown in FIGS. 1 and 4, the driving operation unit 8 has a seat 83 mounted on the center upper portion of the seat support frame structure 14 of the body frame 5. A steering shaft 27 is rotatably disposed in front of the seat 83 at a predetermined interval, and the steering shaft 27 is rotatably supported by the steering post 28 and the steering shaft 28 is supported. The front column cover 68 is covered with an operating lever (main transmission lever 84a and seedling lever 84b) and left and right brake pedals (not shown) on the right side of the front column cover 68. A clutch pedal 85 is provided on the left side of the front column cover 68. In the drawing, reference numeral 104 denotes a steering wheel attached to the upper end of the steering shaft 27.
座席 83の直前方位置には、 図 4及び図 16〜図 18に示すように、 ス テアリングボス ト 28にブラケッ ト 86 を介して取付けた横長矩形箱型状 のキースィ ツチパネル 87を配設している。 As shown in Fig. 4 and Figs. A horizontally long rectangular box-shaped key switch panel 87 attached to the tearing boss 28 via a bracket 86 is provided.
キ一スィ ツチパネル 87 は、 上面に各種の警告ランプ 88a〜88d (例え ば、 苗継作業を促す警告ラ ンプ 88a、 肥料の補給を促す警告ランプ 88b 、 肥料の詰まりを知らせる警告ランプ 88c、 左右ブレーキペダルの連結 が解除されていることを知らせる警告ランプ 88d等） やスィ ッチ 89a〜 89c (例えば、 警告ブザー停止スィ ッチ 89a、 エンジン始動 ' 停止切替 スィ ッチ 89b、植付深さ自動調整入切スィ ツチ 89 c 等） を配設するとと もに、 後側面 （座席 83に対向する側面） の右側下部に凹部 90を形成し 、 同凹部 90 にキースィ ッチ 91 を配設し、 同キースィ ッチ 91 にキー 92 を挿入するようにしており、 凹部 90は、 キースィ ッチ 91 に装着するキ - 92 の後端が平面視でキ一スィ ツチパネル 87の後端部から突出しない 深さに形成している。  The key switch panel 87 has various warning lamps 88a to 88d on its upper surface (for example, a warning lamp 88a for prompting the seedling consolidation work, a warning lamp 88b for prompting the supply of fertilizer, a warning lamp 88c for notifying that the fertilizer is clogged, the left and right brakes. Warning lamps 88d, etc. that indicate that the pedals are disconnected, and switches 89a to 89c (for example, warning buzzer stop switch 89a, engine start / stop switch 89b, automatic planting depth adjustment) In addition to the on / off switch 89c), a recess 90 is formed in the lower right side of the rear side (the side facing the seat 83), and a key switch 91 is provided in the recess 90. The key 92 is inserted into the key switch 91.The depth of the recess 90 is such that the rear end of the key 92 attached to the key switch 91 does not protrude from the rear end of the key switch panel 87 in plan view. Is formed.
このように、 本実施例では、 キ一スィ ッチパネル 87 の上面に警告ラ ンプ 88a〜88d を配設することによって、 作業者は運転操作中に警告ラ ンプ 88a〜88d を容易に視認することができ、 運転操作の安全性を向上 させることができる。 特に、 キースィ ツチパネル 87 の上面前部を水平 面とし、 かかる水平面に警告ランプ 88a〜88d を配置することで、 作業 者が警告ランプ 88a〜88d を視認し易いようにするとともに、 キ一スィ ツチパネル 87 の上面後部を作業者の目線に合わせて前高後低の傾斜状 に形成し、 かかる傾斜面にスィ ッチ 89a〜89c を配置することで、 作業 者がスィ ッチ 89a〜89c を操作し易いようにして、 運転操作の安全性を 向上させている。  As described above, in the present embodiment, the warning lamps 88a to 88d are provided on the upper surface of the key switch panel 87, so that the operator can easily visually recognize the warning lamps 88a to 88d during the driving operation. It is possible to improve the safety of driving operation. In particular, the front surface of the key switch panel 87 is made a horizontal surface, and the warning lamps 88a to 88d are arranged on such a horizontal surface so that workers can easily see the warning lamps 88a to 88d. The rear part of the upper surface is formed to have a front-to-back and back-to-back slope in accordance with the operator's eyes, and switches 89a to 89c are arranged on such a slope so that the operator can operate switches 89a to 89c. The safety of driving operation has been improved by making it easier.
また、 キースイ ッチパネル 87の側面に形成した凹部 90にキ一スィ ッ チ 91 を配設することによって、 キ一スィ ツチ 91 にキー 92 を挿入した 場合に、 キ一92の後端部がキースィ ツチパネル 87の側面から突出する 突出量を可及的に少なくすることができ、 これによ り、 作業者の身体が 誤ってキー 92 の後端部に接触するおそれが少なくなり、 キー 92 の誤動 作を防止できて安全性を向上させることができる。 In addition, by disposing a key switch 91 in a concave portion 90 formed on the side surface of the key switch panel 87, when the key 92 is inserted into the key switch 91, the rear end of the key switch 92 becomes a key switch panel. Protruding from the side of 87 The amount of protrusion can be reduced as much as possible, which reduces the risk of the operator's body accidentally touching the rear end of the key 92, preventing the key 92 from malfunctioning and ensuring safety. Performance can be improved.
しかも、 雨天時にキースィ ッチ 91 に雨水が直接接触することがなく なり、 キ一スィ ッチ 91 の内部に雨水が浸入するおそれがなくなり、 キ 一スィ ッチ 91の故障を防止することができる。  In addition, rainwater does not directly contact the key switch 91 during rainy weather, so that there is no danger of rainwater entering the inside of the key switch 91, and failure of the key switch 91 can be prevented. .
特に、 凹部 90を座席 83に対向する側面に形成しているため、 作業者 が座席 83 に座りながら容易にキー 92 の操作を行え、 操作性を向上させ ることができるとともに、 作業者の前方側の空間を広くすることができ て、 快適に運転操作を行うことができる。  In particular, since the concave portion 90 is formed on the side surface facing the seat 83, the operator can easily operate the key 92 while sitting on the seat 83, thereby improving operability and improving the front of the worker. The space on the side can be enlarged, and driving can be performed comfortably.
また、 凹部 90 をキースィ ツチ 91 に装着するキー 92 の先端が平面視 でキースィ ッチパネル 87 から突出しないように形成しているため、 キ —スィ ツチ 91 にキ一 92を挿入しても、 作業者の身体が誤ってキー 92の 後端部に接触するおそれがなくなり、 キ一 92 の誤動作を防止できて安 全性を向上させることができる。  In addition, since the concave portion 90 is formed so that the tip of the key 92 attached to the key switch 91 does not protrude from the key switch panel 87 in plan view, even if the key 92 is inserted into the key switch 91, the This eliminates the risk that the body of the key 92 may accidentally come into contact with the rear end of the key 92, thereby preventing malfunction of the key 92 and improving safety.
また、 運転操作部 8は、 図 4及び図 12 に示すように、 ステアリ ング シャフ ト 27の基端部にパワーステアリ ング用の トルクジェネレータ 93 の上端部を連動連結し、 同 トルクジ ネレ一夕 93 の下端部に減速機構 94 (図 13参照） を収容したステアリ ングケース 95 を連動連結しており 、 かかるステアリ ングケース 95 は、 従来のようにミ ッションケース 34 の内部に形成するのではなく、 ミ ッションケース 34 とは別個独立した 別体として形成している。  As shown in FIGS. 4 and 12, the driving operation unit 8 has an upper end of a torque generator 93 for power steering interlockedly connected to a base end of the steering shaft 27, and the torque generator 93 has the same configuration. A steering case 95 accommodating a speed reduction mechanism 94 (see FIG. 13) is interlockingly connected to the lower end of the steering case 95. The steering case 95 is not formed inside the mission case 34 as in the related art, but is formed as a conventional case. It is formed as a separate body separate from the case 34.
これら トルクジェネレータ 93 とステアリ ングケース 95は、 エンジン 16 とミ ッションケース 34の間に配設している。  The torque generator 93 and the steering case 95 are disposed between the engine 16 and the mission case 34.
すなわち、 エンジン 16の後方下部に形成された凹部 96 に トルクジェ ネレー夕 93を上面を後上方へ向けて傾斜させた状態で配設する一方、 ミ ツションケース 34の前方下部に形成された凹部 97にステアリ ングケ ース 95を上面を後上方へ向けて傾斜させた状態で配設している。 That is, the torque generator 93 is disposed in the recess 96 formed in the lower rear part of the engine 16 with the upper surface inclined upward and rearward, A steering case 95 is disposed in a recess 97 formed in the lower front part of the mission case 34 with the upper surface inclined upward and rearward.
このように、 本実施例では、 ステアリ ングケース 95 とミ ッションケ —ス 34 とを別体に形成することによって、 農作業機の仕様を変更する 際には、 仕様変更に応じてステアリ ングケース 95 の配設位置を適宜変 更するだけでよく、 ミ ッションケース 34 自体の形状を変更する必要が なくなり、 これにより、 農作業機の仕様変更を迅速かつ容易に行えるよ うにしている。  As described above, in the present embodiment, when the specifications of the agricultural working machine are changed by separately forming the steering case 95 and the mission case 34, the steering case 95 is changed in accordance with the specification change. It is only necessary to change the arrangement position appropriately, and it is not necessary to change the shape of the mission case 34 itself, thereby making it possible to change the specifications of the agricultural work machine quickly and easily.
しかも、 ステアリングケース 95やトルクジェネレータ 93をエンジン 16 とミ ッシヨンケース 34との間に配設することによって、 エンジン 16 とミ ッションケース 34 との間に形成された空間を有効に利用して機体 のコンパク ト化を図ることができるようにしている。  In addition, by disposing the steering case 95 and the torque generator 93 between the engine 16 and the mission case 34, the space formed between the engine 16 and the mission case 34 is effectively used to compact the aircraft. It is possible to achieve the goal.
特に、 エンジン 16の後部とミ ツショ ンケース 34の前部に凹部 96 , 97 をそれそれ形成し、 両凹部 96 , 97 間にステアリ ングケース 95 やトルク ジェネレータ 93を配設することによって、 ステアリ ングケース 95ゃ ト ルクジェネレータ 93 を配設するためのスペースとして十分なスペース を確保することができるようにしている。  In particular, recesses 96 and 97 are formed at the rear of the engine 16 and at the front of the transmission case 34, respectively, and the steering case 95 and the torque generator 93 are arranged between the recesses 96 and 97 so that the steering case is formed. 95 ゃ A sufficient space is provided for installing the torque generator 93.
しかも、 エンジン 16の後方下部とミ ツションケース 34の前方下部と に凹部 96 , 97をそれそれ形成し、 両凹部 96，97間にステアリングケース 95 や トルクジェネレータ 93 を前低後高の傾斜状に配設することによつ て、 エンジン 16 とステアリ ングケース 95 と トルクジェネレータ 93 と ミ ッションケース 34 とを密接させて集中的に配設することができ、 よ り一層機体のコンパク ト化を図ることができるようにしている。  In addition, recesses 96 and 97 are formed in the lower rear part of the engine 16 and the lower front part of the mission case 34, respectively, and the steering case 95 and the torque generator 93 are inclined between the two concave parts 96 and 97 with a low front and rear height. In this case, the engine 16, the steering case 95, the torque generator 93, and the mission case 34 can be arranged in close contact and concentrated, thereby further improving the compactness of the aircraft. Have to be able to.
かかる トルクジェネレータ 93 とステアリングケース 95の取付構造に ついて説明すると、 図 4及び図 12 に示すように、 機体フ レーム 5にェ ンジン 16を支持するために設けたェンジン支持体 17の後端にステアリ ングケース 95を支持するためのステアリ ング支持体 1 9を延設し、 同ス テアリ ング支持体 1 9の上部に トルクジェネレータ 93を載設する一方、 ステアリング支持体 1 9の下部にステアリングケース 95を配設し、 これ ら トルクジェネレータ 93 とステアリ ングケース 95 とを左右 2本づつの 合計 4本のボルト 98で機体フレーム 5のステアリ ング支持体 1 9を介し て直接的に締結し、 さらには、 同ステアリ ング支持体 1 9 の後端部とミ ッシヨンケース 34の前端部とをブラケッ ト 99を介して連結する一方、 ステア リ ングケース 95 の後端下部にミ ヅシヨ ンケース 34の前端下部を 補強支持体 100を介して連結している。 The mounting structure of the torque generator 93 and the steering case 95 will now be described. As shown in FIGS. 4 and 12, a rear end of an engine support 17 provided to support the engine 16 on the body frame 5 is provided. A steering support 19 for supporting the steering case 95 is extended, and a torque generator 93 is mounted on an upper portion of the steering support 19 while a steering case 95 is mounted on a lower portion of the steering support 19. The torque generator 93 and the steering case 95 are directly fastened via the steering support 19 of the fuselage frame 5 with a total of four bolts 98, two on each side. The rear end of the steering support 19 is connected to the front end of the mission case 34 via a bracket 99, while the rear end of the steering case 95 is reinforced at the lower rear end of the steering case 34. They are connected via a support 100.
このようにして、 本実施例では、 図 12 に示すように、 エンジン支持 体 17 の前端部 （前側フ レーム構成体 1 1 ) とステアリ ング支持体 1 9 の 後端部 （ブラケッ ト 99 とミ ッションケース 34 との締結部であるボル ト 101 ) と補強支持体 100 の後端部 （補強支持体 100 とミ ツションケース 34 との締結部であるボル 卜 102 ) とが側面視で仮想三角形 103の各頂点 に位置するように構成している。  Thus, in this embodiment, as shown in FIG. 12, the front end of the engine support 17 (front frame structure 11) and the rear end of the steering support 19 (bracket 99 and A bolt 101 which is a fastening portion with the transmission case 34 and a rear end portion of the reinforcing support 100 (a bolt 102 which is a fastening portion between the reinforcing support 100 and the mission case 34) are formed by a virtual triangle 103 in a side view. It is configured to be located at each vertex of.
そのため、 エンジン 16 とミ ッシヨンケース 34 とをステアリ ングケー ス 95 を介して強固に連結することができるとともに、 エンジン支持体 17 自体の強度を良好に確保することができて、 これによ り、 機体の剛 性を向上させることができる。  As a result, the engine 16 and the mission case 34 can be firmly connected to each other via the steering case 95, and the strength of the engine support 17 itself can be sufficiently secured. The rigidity can be improved.
しかも、 本実施例では、 トルクジェネレータ 93 とステアリ ングケ一 ス 95 との間に機体フレーム 5を構成するステアリ ング支持体 1 9を介在 させて、 同ステアリ ング支持体 1 9 に トルクジエネレー夕 93 とステアリ ングケース 95 とを取付けている。  Moreover, in the present embodiment, a steering support 19 constituting the body frame 5 is interposed between the torque generator 93 and the steering case 95, and the torque generator 93 and the steering gear are provided on the steering support 19. Mounting case 95 is installed.
このように、 トルクジェネレータ 93 とステアリ ングケース 95 とを同 一部材である機体フ レーム 5のステアリ ング支持体 1 9 に取付けている ため、 取付構造を簡略化することができ、 取付に要する部品点数を削減 することができ、 これにより、 製造コス トや部品管理コス トを低廉化す ることができるとともに、 機体の軽量化を図ることができる。 As described above, since the torque generator 93 and the steering case 95 are attached to the steering support 19 of the body frame 5 which is the same member, the attachment structure can be simplified, and the components required for the attachment can be simplified. Reduce points As a result, manufacturing costs and parts management costs can be reduced, and the weight of the aircraft can be reduced.
また、 トルクジェネレータ 93 を機体フ レーム 5のステアリ ング支持 体 1 9 に取付けているため、 ステアリ ングホイール 104 にかかる荷重を 機体フレーム 5のステアリ ング支持体 19 で受けることになり、 ステア リ ングケース 95 にかかる荷重を軽減することができ、 ステアリ ングケ ース 95 を従来のものより も軽量化することができ、 これによつても機 体の軽量化を図ることができる。  Further, since the torque generator 93 is mounted on the steering support 19 of the body frame 5, the load applied to the steering wheel 104 is received by the steering support 19 of the body frame 5, and the steering case The load applied to the 95 can be reduced, and the steering case 95 can be made lighter than the conventional case, which can also reduce the weight of the aircraft.
特に、 トルクジェネレータ 93 とステアリングケース 95 とを機体フレ ーム 5のステアリ ング支持体 1 9 を介して直接的に締結しているため、 締結箇所が一箇所に集中することになり、 組立作業性ゃメンテナンス性 を向上させることができる。  In particular, since the torque generator 93 and the steering case 95 are directly fastened via the steering support 19 of the body frame 5, the fastening points are concentrated in one place, and assembling workability is improved.ゃ Maintainability can be improved.
トルクジェネレータ 93 は、 図 13 及び図 14 に示すように、 トルクジ エネレー夕本体 105の下端部であって トルクジヱネレー夕本体 105 とス テアリ ングケース 95 との間にケース体 106 を覆設しており、 かかるケ ース体 106 によって トルクジヱネレー夕本体 1 05の内部に形成されたパ ワーステアリ ング用のオイルの循環流路を密閉するように構成している 。 図中、 107は、 オイル吸入口、 108はオイル排出口である。  As shown in FIGS. 13 and 14, the torque generator 93 has a case body 106 covering the lower end of the torque generator body 105 and between the torque generator body 105 and the steering case 95. The case body 106 is configured to seal a power steering oil circulation passage formed inside the torque generator body 105. In the figure, 107 is an oil inlet, and 108 is an oil outlet.
かかるケース体 106は、 トルクジェネレータ本体 105のオイルを排出 するための ドレン開口 109 を後端部に形成している。 図中、 1 10 は ドレ ンパイプである。  The case body 106 has a drain opening 109 for discharging oil from the torque generator body 105 formed at the rear end. In the figure, 110 is a drain pipe.
また、 トルクジェネレータ 93 は、 トルクジェネレータ本体 105 の下 端部に突出させた中間軸 1 1 1の先端部にケース体 106 に回動自在に設け た出力軸 1 12の基端部を連結し、 同出力軸 1 12の先端部に出力ギヤ 1 13 を取付けている。 図中、 1 14はベアリ ング、 1 15はパッキンである。  Further, the torque generator 93 is connected to a base end of an output shaft 112 rotatably provided on a case body 106 to a distal end of an intermediate shaft 111 protruding from a lower end of the torque generator body 105, The output gear 1 13 is attached to the tip of the output shaft 1 12. In the figure, 114 is a bearing and 115 is a packing.
一方、 ステアリングケース 95は、 図 13及び図 15に示すように、 ス テアリ ングケース本体 1 16の上部開口をステアリ ングケース蓋 1 17で覆 設しており、 内部に減速機構 94 を収容配設している。 尚、 本実施例で は、 トルクジェネレータ 93 が密閉構造となっており、 トルクジエネレ 一夕 93の内部を循環するオイルがステアリングケース 95の内部に流入 することがないため、 ステアリ ングケース 95 は密閉構造とする必要は ない。 On the other hand, as shown in FIGS. 13 and 15, the steering case 95 The upper opening of the tearing case body 116 is covered with a steering case cover 117, and a reduction mechanism 94 is accommodated and disposed inside. In this embodiment, the torque generator 93 has a sealed structure, and since the oil circulating inside the torque generator 93 does not flow into the steering case 95, the steering case 95 has a sealed structure. It is not necessary.
減速機構 94 は、 ステアリ ングケース本体 1 16 とステアリングケース 蓋 1 17とで回動自在に支持した入力軸 1 18の上部に大径変速ギヤ 1 19を 取付けるとともに、 入力軸 1 18の下部に小径変速ギヤ 120を取付け、 一 方、 ステアリ ングケース本体 1 16 の後部で回動自在に支持した出力軸 121 の上部に扇状の旋回ギヤ 122 を取付け、 これら小径変速ギヤ 120 と 旋回ギヤ 122とを嚙合させている。  The reduction mechanism 94 has a large-diameter transmission gear 119 mounted on an upper portion of an input shaft 118 rotatably supported by a steering case main body 116 and a steering case lid 117, and a small-diameter gear mounted on a lower portion of the input shaft 118. The transmission gear 120 is mounted, and on the other hand, a fan-shaped slewing gear 122 is mounted on the upper part of the output shaft 121 rotatably supported at the rear of the steering case body 116, and these small-diameter transmission gear 120 and slewing gear 122 are combined. Let me.
また、 ステアり ングケース 95 は、 ステアリ ングケース本体 1 16 の後 方下部に出力軸 121 を下方に向けて突出させ、 同出力軸 121の下端部に 板状のピッ トマンアーム 123 を取付け、 同ピッ トマンアーム 123の前端 部に左右一対の ドラッグリ ンク 124， 125 を連動連結しており、 かかる ド ラッグリ ンク 124 , 125は、 左右のフロン トアクスルケース 35，36に設け たナックルアーム （図示省略） に連動連結している。  In the steering case 95, the output shaft 121 projects downward from the rear lower portion of the steering case body 116, and a plate-shaped pitman arm 123 is attached to the lower end of the output shaft 121. A pair of left and right drag links 124, 125 are linked to the front end of the toman arm 123, and the drag links 124, 125 are linked to knuckle arms (not shown) provided on the left and right front axle cases 35, 36. Connected.
さらに、 ステアリ ングケース 95 は、 ステアリ ングケース本体 1 16 の 下面に円弧状の溝 126 を刻設する一方、 ピッ トマンアーム 123の上面に ピン 127を上方に向けて突出させており、 かかるピン 127が溝 126 に沿 つて回動移動するようにし、 しかも、 溝 126の両端部にピン 127が当接 することによって、 ピッ 卜マンアーム 123の回動を阻止するようにして いる。 このように、 ステアリ ングケース 95 に形成した溝 126 をステア リ ングホイール 104の切れ角ス ト ッパーとして用いることで、 構成する 部品点数を減少させながら、 切れ角の精度を向上させている。 そして、 ステアリ ングケース蓋 1 17 とステアリ ング支持体 1 9 とに貫 通孔 128 , 129 をそれそれ穿設し、 トルクジ： nネレ一夕 93 の下端部に突 設した出力軸 1 12をケース体 106や貫通孔 128，129を貫通させることに よって、 出力軸 1 12 と出力ギヤ 1 13 とをステアリ ングケース 95 の内部 に挿通し、 ステアリ ングケース 95 の内部で出力ギヤ 1 13 と大径変速ギ ャ 1 1 9 とを嚙合させることによって、 トルクジェネレータ 93 とステア リングケース 95 とを連動連結している。 Further, in the steering case 95, an arc-shaped groove 126 is formed in the lower surface of the steering case body 116, while a pin 127 is projected upward on the upper surface of the pitman arm 123. The pivotal movement is performed along the groove 126, and the rotation of the pitman arm 123 is prevented by contacting the pins 127 with both ends of the groove 126. As described above, by using the groove 126 formed in the steering case 95 as a cutting angle stopper of the steering wheel 104, the precision of the cutting angle is improved while the number of components constituting the steering wheel is reduced. Then, through holes 128 and 129 are formed in the steering case cover 117 and the steering support 19, respectively, and the output shaft 112 protruding from the lower end of the torque nut 93 is connected to the case. By passing the body 106 and the through holes 128 and 129 through, the output shaft 1 12 and the output gear 1 13 are inserted into the inside of the steering case 95, and the output gear 1 13 and the large diameter are inserted inside the steering case 95. The torque generator 93 and the steering case 95 are linked to each other by combining the transmission gears 119.
このように、 本実施例では、 トルクジェネレータ 93 とステアリング ケース 95 との間に設けたケース体 106で トルクジェネレータ 93を密閉 しているため、 ステアリ ングケース 95 を密閉構造とする必要がなく、 トルクジェネレータ 93 とステアリ ングケース 95 とを密閉構造とするた めのパッキンや締結具が必要なくなり、 部品点数を削減することができ 、 これにより、 製造コス トや部品管理コス トの低廉化を図ることができ るとともに、 機体の軽量化を図ることができる。  As described above, in this embodiment, the torque generator 93 is hermetically sealed by the case body 106 provided between the torque generator 93 and the steering case 95, so that the steering case 95 does not need to have a closed structure, and the torque No packing or fasteners are required to make the generator 93 and the steering case 95 a sealed structure, and the number of parts can be reduced, thereby reducing manufacturing costs and parts management costs. And the weight of the aircraft can be reduced.
しかも、 トルクジェネレータ 93 とケース体 1 06 とを取外し、 トルク ジェネレータ 93 に替えて適宜の連結具を装着するだけで、 パワーステ アリング機能を有しない仕様のものに迅速かつ容易に仕様変更すること ができる。  In addition, by simply removing the torque generator 93 and the case body 106 and installing appropriate couplings in place of the torque generator 93, it is possible to quickly and easily change the specification to one having no power steering function. .
また、 トルクジェネレータ 93 とケース体 1 06 とが密閉構造となって いるため、 ステアリ ングケース 95から トルクジェネレータ 93 とケース 体 106 とを取外しても、 トルクジェネレータ 93 とケース体 106 とから オイルが漏れるおそれがなく、 これによ り、 メンテナンスの作業性を向 上させることができる。  Also, since the torque generator 93 and the case body 106 have a sealed structure, even if the torque generator 93 and the case body 106 are removed from the steering case 95, oil leaks from the torque generator 93 and the case body 106. There is no danger, thereby improving the maintenance workability.
特に、 ケース体 106に トルクジェネレータ本体 105のオイルを排出す るための ドレン開口 109を形成しているため、 ドレイ ン開口 109から ト ルクジェネレータ 93の内部のオイルを抜き去ることができ、 トルクジ エネレー夕 93のメンテナンス作業を容易に行うことができる。 In particular, since the case body 106 has a drain opening 109 for discharging the oil of the torque generator body 105, the oil inside the torque generator 93 can be drained from the drain opening 109, and the torque The maintenance work of Eneray 93 can be performed easily.
また、 トルクジヱネレー夕 93 の出力軸 1 12 をケース体 106 を貫通さ せてステアリ ングケース 95 に挿通することによって、 トルクジェネレ 一夕 93をステアリングケース 95 に連動連結しているため、 トルクジェ ネレ一夕 93の出力軸 1 12をステアリ ングケース 95の入力軸として兼用 することができ、 部品点数を削減することができ、 これにより、 製造コ ス 卜や部品管理コス 卜の低廉化や機体の軽量化を図ることができる。  In addition, since the output shaft 112 of the torque generator 93 is inserted through the case body 106 and inserted into the steering case 95, the torque generator 93 is linked to the steering case 95, so that the torque generator 93 is connected. The 93 output shafts 1 and 12 can also be used as the input shafts for the steering case 95, reducing the number of parts, thereby reducing manufacturing costs and parts management costs, and reducing the weight of the machine. Can be achieved.
また、 運転操作部 8は、 図 1及び図 8に示すように、 座席 83 の周囲 にステップ 1 30を配設しており、 かかるステップ 130 と前記フロン トス テップ 63 とで床部を形成している。  Also, as shown in FIGS. 1 and 8, the driving operation unit 8 has a step 130 disposed around the seat 83, and the step 130 and the front step 63 form a floor. I have.
ステップ 130 は、 前端部をフロン 卜ステップ 63 の後端部に連設して おり、 左右側部に乗降用のサイ ドステップ 131，132を形成している。 尚、 ステップ 130 とフ ロ ン トステップ 63 との分割位置 （ステップ 130 の前端及びフロン トステップ 63 の後端の位置） は、 従来よ りも機 体後方側に位置させ、 ステアリ ングホイール 104の後端直下方位置近傍 としており、 これによ り、 フロン トステップ 63 を取外すだけで変速装 置 45 のメンテナンス作業を行うことができ、 また、 分割位置が機体後 方側に移動した分だけステップ 1 30を小型軽量化することができ、 ステ ップ 130の着脱作業を容易なものすることができる。  In step 130, the front end is connected to the rear end of the front step 63, and side steps 131 and 132 for getting on and off are formed on the right and left sides. The dividing position of the step 130 and the front step 63 (the position of the front end of the step 130 and the rear end of the front step 63) is located on the rear side of the body compared to the conventional case, and the steering wheel 104 It is located near the position directly below the rear end, so that maintenance work on the transmission 45 can be performed simply by removing the front step 63, and the number of steps can be reduced by the amount that the split position has moved to the rear of the machine. 130 can be made smaller and lighter, and the work of attaching and detaching step 130 can be facilitated.
また、 ステップ 1 30 は、 座席 83 の直下方を側面視で凹状に形成する ことによって作業者の足元に凹部 133を形成しており、 これによ り、 作 業者の足元を広く して、 快適に運転操作できる。  Also, in step 130, a recess 133 is formed at the foot of the operator by forming a recess directly below the seat 83 in a side view, thereby making the operator's foot wider and comfortable. Can be operated.
さらに、 ステップ 130 は、 左右両端部を後車輪 39 の左右側方まで伸 延させることによって、 湿田等で後車輪 39 の外側に取付ける補助車輪 (図示省略） の前側上方を被覆するようにしており、 これにより、 機体 側方にて苗継レバー 84bを操作する際に作業者に泥土がかかるのを防止 することができ、 また、 ステップ 130 自体が広くなることで苗継時や肥 料補給時の作業性を向上させることができ、 さらには、 ステップ 130上 の物体が落下して補助車輪に巻き付くのを防止することができる。 Further, in step 130, the left and right ends are extended to the left and right sides of the rear wheel 39 so as to cover the upper front side of an auxiliary wheel (not shown) attached to the outside of the rear wheel 39 in a wetland or the like. This prevents the operator from being exposed to mud when operating the seedling connecting lever 84b on the side of the machine. In addition, the step 130 itself can be widened to improve the workability when transferring seedlings or supplying fertilizer, and the object on the step 130 falls and wraps around the auxiliary wheel. Can be prevented.
そして、 ステップ 130は、 図 8に示すように、 略中央部において機体 フレーム 5のステップ支持フ レーム構成体 13 で支持されており、 また 、 左右後端部において機体フ レーム 5 のステップ支持フ レーム構成体 30 , 31で支持されている。  As shown in FIG. 8, the step 130 is supported by the step support frame structure 13 of the body frame 5 at substantially the center, and the step support frame of the body frame 5 is provided at the left and right rear ends. It is supported by components 30 and 31.
かかるステップ 130の左右後端部を支持するステップ支持フレーム構 成体 30 , 31は、 ステップ 130のみならずステップ 130の後方に配設した 機体後端部を覆う リャデッキ 134をも支持している。  The step support frame structures 30 and 31 that support the left and right rear ends of the step 130 support not only the step 130 but also a rear deck 134 that covers the rear end of the fuselage disposed behind the step 130.
すなわち、 各ステップ支持フ レーム構成体 30 , 31は、 基端部を左右幅 方向に向けて伸延させるとともに、 中途部で屈曲して、 先端部を前後方 向に向けて伸延させた形状となっており、 左右幅方向に向けて伸延する 基端部でリャデッキ 134を支持し、 一方、 前後方向に向けて伸延する先 端部でステップ 130を支持している。  That is, each of the step supporting frame components 30, 31 has a shape in which the base end extends in the left-right width direction, and is bent in the middle, and the distal end extends forward and rearward. The base end extending in the left-right width direction supports the rear deck 134, while the front end extending in the front-rear direction supports the step 130.
そして、 リャデッキ 134 は、 リャフレーム構成体 15 の角部とステツ プ支持フレーム構成体 30 , 31の基端部との間に設けたリャデッキ支持ブ ラケッ ト 32 , 33で固定している。  The rear deck 134 is fixed by the rear deck supporting brackets 32 and 33 provided between the corners of the rear frame constituting body 15 and the base ends of the step supporting frame bodies 30 and 31.
かかる リャデッキ支持ブラケッ ト 32 , 33 には、 図 10 に示すように、 リャデッキ 134に替えて施肥機 135 を取付けることができるようになつ ている。  As shown in FIG. 10, a fertilizer applicator 135 can be attached to the rear deck support brackets 32 and 33 in place of the rear deck 134, as shown in FIG.
このように、 本実施例では、 機体フ レーム 5にステップ 130を支持す るためのステップ支持フレーム構成体 30 , 31 を設け、 同ステップ支持フ レーム構成体 30， 31でリャデッキ 1 34をも支持するように構成している ため、 機体フレーム 5に設けたステップ支持フレーム構成体 30，31 だけ でステップ 130のみならず同ステップ 130の後方に配設したリャデッキ 134 をも支持することができ、 これによ り、 リャデッキ 134 を支持する ための専用部材を別途設ける必要がなくなり、 農作業機を構成する部品 点数を削減することができるので、 製造コス トや部品管理コス トを低減 することができるとともに、 機体の軽量化を図ることができる。 Thus, in the present embodiment, the body frame 5 is provided with the step support frame members 30 and 31 for supporting the step 130, and the step support frame members 30 and 31 also support the rear deck 134. And the rear deck arranged behind the step 130 using only the step support frame members 30 and 31 provided on the body frame 5. 134 can also be supported, which eliminates the need to separately provide a dedicated member for supporting the lya deck 134, and reduces the number of parts that make up the agricultural work machine. The management cost can be reduced, and the weight of the aircraft can be reduced.
特に、 ステツプ支持フレーム構成体 30， 31の基端部を左右幅方向に向 けて伸延させるとともに、 先端部を前後方向に向けて伸延させ、 同先端 部でステップ 130を支持する一方、 基端部でリャデツキ 134を支持する ようにしているため、 ステツプ支持フレーム構成体 30， 31 を製造容易で 安価なものとすることができ、 より一層農作業機の低廉化を図ることが できる。  In particular, the base ends of the step support frame members 30, 31 are extended in the left-right width direction, and the distal ends are extended in the front-rear direction. Since the Ryadeck 134 is supported by the part, the step support frame members 30, 31 can be manufactured easily and inexpensively, and the cost of the agricultural work machine can be further reduced.
また、 ステツプ支持フレーム構成体 30， 31 の基端部に リャデッキ 134 を装着するためのリャデッキ支持ブラケッ ト 32，33を設け、 同リャデヅ キ支持ブラケッ ト 32 , 33に、 リャデッキ 134に替えて施肥機 135を装着 できるようにしているため、 施肥機 135 を装着するための部材を別途用 意する必要がなくなり、 これによつても、 部品点数の削減による低廉化 や機体の軽量化を図ることができる。  Further, at the base ends of the step supporting frame members 30 and 31, there are provided rear deck support brackets 32 and 33 for mounting the rear deck 134. Since the 135 can be mounted, there is no need to provide a separate member for mounting the fertilizer applicator 135, and this can also reduce the number of parts and reduce the cost and weight of the aircraft. it can.
産業上の利用可能性 Industrial applicability
本発明は、 以上説明したような形態で実施され、 以下に記載されるよ うな効果を奏する。  The present invention is embodied in the form described above, and has the following effects.
すなわち、 請求項 1 に係る本発明では、 機体フ レームを構成する前後 方向に向けて伸延させた左右一対のセンターフ レーム構成体の前部に左 右幅方向に向けて伸延させた予備苗載台支持フ レーム構成体を架設し、 同予備苗載台支持フレーム構成体の左右側部で予備苗載台を支持し、 し かも、 左右一対のセンターフレーム構成体の前部に前側フレーム構成体 を横架するとともに、 同前側フレーム構成体の左右側部を前記予備苗載 台支持フ レーム構成体の左右側部に連結しているため、 予備苗載台の荷 重を予備苗載台支持フレーム構成体の左右端部で受けるだけでなく前側 フレーム構成体の左右側部でも受けることになり、 これら予備苗載台支 持フ レーム構成体と前側フ レーム構成体とが協働して重量物である予備 苗載台を支持することになり、 これによつて、 予備苗載台支持フ レーム 構成体の強度を確保するために太く形成する必要がなくなり、 予備苗載 台支持フレーム構成体自体の軽量化や低廉化を図れるばかりでなく、 農 作業機全体の軽量化や低廉化を図ることができる。 That is, in the present invention according to claim 1, the spare seedlings extending in the left and right width directions are provided at the front portions of a pair of left and right center frame components extending in the front-rear direction constituting the body frame. A stand support frame structure is erected, and the spare seedling support is supported on the left and right sides of the spare seedling support structure, and a front frame structure is provided at the front of a pair of left and right center frame structures. And the left and right sides of the front frame structure are connected to the left and right sides of the spare seedling support frame structure, so that the load of the spare seedling support is supported by the spare seedling support. It is received not only at the left and right ends of the frame structure but also at the left and right sides of the front frame structure, and the spare seedling support frame structure and the front frame structure cooperate with each other. As a result, it is not necessary to form the spare seedling support frame as thick as possible to secure the strength of the spare seedling support frame. Not only can the weight and cost of the agricultural machine itself be reduced, but also the weight and cost of the entire agricultural work machine can be reduced.
また、 請求項 2に係る本発明では、 平面視においてセン夕一フ レーム 構成体の前側部と前側フ レーム構成体の側部と予備苗載台支持フ レーム 構成体の側部とで囲まれた領域の内部にバッテリーを配設しているため 、 バッテリーの周囲にセンターフ レーム構成体の前側部と前側フ レーム 構成体の側部と予備苗載台支持フ レーム構成体の側部とが存在すること になり、 センターフ レーム構成体の前側部と前側フ レ一ム構成体の側部 と予備苗載台支持フ レーム構成体の側部とが畦等の障害物からバッテリ 一を保護するための保護部材として機能し、 これらの保護部材によりバ ッテリーの破損を防止することができ、 農作業機の長寿命化を図ること ができる。  Further, in the present invention according to claim 2, the front side portion of the center frame structure, the side portion of the front side frame structure, and the side portion of the spare seedling mounting support frame structure are surrounded in plan view. The front side of the center frame structure, the side of the front frame structure, and the side of the spare seedling support frame structure are arranged around the battery because the battery is disposed inside the area. As a result, the front side of the center frame structure, the side of the front frame structure, and the side of the spare seedling support frame structure protect the battery from obstacles such as ridges. These protection members can prevent the battery from being damaged and extend the life of the agricultural work machine.
しかも、 バッテリーを保護するための保護部材を別途設ける必要がな くなり、 これによつても、 農作業機の軽量化や低廉化を図ることができ る。  In addition, there is no need to separately provide a protective member for protecting the battery, and this also enables the weight and cost of the agricultural working machine to be reduced.
また、 請求項 3に係る本発明では、 平面視においてセンターフ レーム 構成体の前側部と前側フ レーム構成体の側部と予備苗載台支持フ レーム 構成体の側部とで囲まれた領域の内部に油圧ポンプを配設しているため 、 油圧ポンプの周囲にセンターフ レ一ム構成体の前側部と前側フ レーム 構成体の側部と予備苗載台支持フ レーム構成体の側部とが存在すること になり、 セン夕一フレーム構成体の前側部と前側フレーム構成体の側部 と予備苗載台支持フ レーム構成体の側部とが畦等の障害物から油圧ポン プを保護するための保護部材として機能し、 これらの保護部材により油 圧ポンプの破損を防止することができ、 農作業機の長寿命化を図ること ができる。 In the present invention according to claim 3, the area surrounded by the front side of the center frame structure, the side portion of the front frame structure, and the side portion of the spare seedling support frame structure in plan view. The front side of the center frame structure and the front side frame around the hydraulic pump The side of the structure and the side of the spare seedling support frame structure are present, and the front side of the center frame structure, the side of the front frame structure and the spare seedling support frame are provided. The sides of the frame structure function as protective members for protecting the hydraulic pump from obstacles such as ridges, and these protective members can prevent damage to the hydraulic pump, and extend the life of the agricultural work machine. Can be achieved.
しかも、 油圧ポンプを保護するための保護部材を別途設ける必要がな くなり、 これによつても、 農作業機の軽量化や低廉化を図ることができ る。  In addition, there is no need to separately provide a protection member for protecting the hydraulic pump, and this also makes it possible to reduce the weight and cost of the agricultural work machine.
また、 請求項 4に係る本発明では、 平面視において左右一対のセン夕 ーフレーム構成体の前側部と前側フレーム構成体の中途部と予備苗載台 支持フ レーム構成体の中途部とで囲まれた領域の内部にエンジンを配設 するとともに、 平面視において左右一対のセン夕ーフレーム構成体の前 側部と前側フ レーム構成体の側部と予備苗載台支持フ レーム構成体の側 部とで囲まれた二つの領域のうちの一方の領域の内部にバッテリ一を配 設する一方、 他方の領域の内部に油圧ポンプを配設しているため、 前述 したバッテリーや油圧ボンプの保護ができるだけでなく、 重量物である エンジンを中心に同じく重量物であるバッテリーと油圧ポンプとを左右 に振り分けて配置することになり、 左右の重量バランスを良好なものと することができ、 機体の走行安定性を向上させることができる。  Further, in the present invention according to claim 4, in a plan view, the front side portion of the pair of left and right sensor frame members, the middle portion of the front frame member, and the middle portion of the spare seedling mounting support frame member are surrounded. The engine is arranged inside the region, and the front side of the pair of left and right sensor frame members, the side portion of the front frame member, and the side portion of the spare seedling support frame member member in plan view. The battery is placed inside one of the two areas surrounded by the circle, while the hydraulic pump is placed inside the other area, so that the battery and the hydraulic pump described above can be protected as much as possible. Rather, the battery and the hydraulic pump, which are the same heavy objects, are placed separately on the left and right around the engine, which is a heavy object, so that the left and right weight balance can be improved. The running stability of the aircraft can be improved.
また、 請求項 5に係る本発明では、 機体フ レームの上部に運転操作部 の床部を形成するステップを配設するとともに、 同ステップの後方にリ ャデッキを配設し、 しかも、 機体フ レームにステップを支持するための ステップ支持フ レーム構成体を設け、 同ステツプ支持フ レーム構成体で リャデッキをも支持するように構成しているため、 機体フ レームに設け たステツプ支持フレーム構成体だけでステップのみならず同ステップの 後方に配設したリャデッキをも支持することができる。 Further, in the present invention according to claim 5, a step of forming a floor portion of the driving operation unit is provided above the body frame, and a rear deck is provided behind the step, and furthermore, the body frame is provided. A step support frame structure for supporting the steps is provided on the vehicle, and the step support frame structure is also configured to support the rear deck.Therefore, only the step support frame structure provided on the fuselage frame is used. Not only the step but also the same step It can also support the rear deck arranged behind.
これにより、 リャデッキを支持するための専用部材を別途設ける必要 がなくなり、 農作業機を構成する部品点数を削減することができるので 、 製造コス トゃ部品管理コス トを低減することができるとともに、 機体 の軽量化を図ることができる。  This eliminates the need to separately provide a dedicated member for supporting the rear deck, and reduces the number of parts constituting the agricultural working machine, thereby reducing the manufacturing cost and the parts management cost, and Can be reduced in weight.
また、 請求項 6に係る本発明では、 前記ステップ支持フ レーム構成体 の基端部を左右幅方向に向けて伸延させるとともに、 先端部を前後方向 に向けて伸延させ、 同先端部でステップを支持する一方、 前記基端部で リャデッキを支持することにしているため、 ステップ支持フ レーム構成 体を製造容易で安価なものとすることができ、 より一層農作業機の低廉 化を図ることができる。  In the present invention according to claim 6, the base end of the step support frame structure is extended in the left-right width direction, and the tip is extended in the front-rear direction. Since the rear end is supported on the rear deck while supporting, the step supporting frame structure can be manufactured easily and inexpensively, and the cost of the agricultural work machine can be further reduced. .
また、 請求項 7に係る本 ¾明では、 前記ステップ支持フ レーム構成体 の基端部にリャデッキを装着するためのブラケッ トを設け、 同ブラケッ 卜に、 リャデッキに替えて施肥機を装着できるようにしているため、 施 肥機を装着するための部材を別途用意する必要がなく なり、 これによつ ても、 部品点数の削減による低廉化や機体の軽量化を図ることができる  In the present invention according to claim 7, a bracket for mounting a rear deck is provided at a base end of the step support frame structure, and a fertilizer applicator can be mounted on the same bracket instead of the rear deck. Therefore, it is not necessary to prepare a separate member for mounting the fertilizer, and this can also reduce the number of parts and reduce the cost and weight of the machine.

Claims

請 求 の 範 囲 . 機体フレームを構成する前後方向に向けて伸延させた左右一対のセ ン夕ーフ レーム構成体の前部に左右幅方向に向けて伸延させた予備 苗載台支持フ レーム構成体を架設し、 同予備苗載台支持フ レーム構 成体の左右側部で予備苗載台を支持し、 Scope of request. A spare seedling support frame that extends in the left and right width direction at the front of a pair of left and right sun frame components that extend in the front-rear direction that constitutes the fuselage frame. The structure is erected, and the spare seedling support is supported on the left and right sides of the spare seedling support frame.
しかも、 左右一対のセ ン夕一フ レーム構成体の前部に前側フ レー ム構成体を横架するとともに、 同前側フレーム構成体の左右側部を 前記予備苗載台支持フレーム構成体の左右側部に連結したことを特 徴とする農作業機。 . 平面視においてセンターフレーム構成体の前側部と前側フレーム構 成体の側部と予備苗載台支持フレーム構成体の側部とで囲まれた領 域の内部にバッテ リーを配設したことを特徴とする請求項 1記載の 農作業機。 . 平面視においてセン夕一フレーム構成体の前側部と前側フレーム構 成体の側部と予備苗載台支持フ レーム構成体の側部とで囲まれた領 域の内部に油圧ポンプを配設したことを特徴とする請求項 1又は請 求項 2記載の農作業機。 . 平面視において左右一対のセンターフ レーム構成体の前側部と前側 フレーム構成体の中途部と予備苗載台支持フレーム構成体の中途部 とで囲まれた領域の内部にエンジンを配設するとともに、 平面視に おいて左右一対のセンターフレーム構成体の前側部と前側フレーム 構成体の側部と予備苗載台支持フレーム構成体の側部とで囲まれた 二つの領域のうちの一方の領域の内部にバッテリ一を配設する一方、 他 方の領域の内部に油圧ボンプを配設したことを特徴とする請求項 1 記載の農作業機。 In addition, the front frame component is laid horizontally on the front part of the pair of left and right sensor frame components, and the left and right sides of the front frame component are aligned with the left and right sides of the spare seedling mounting support frame component. A farm work machine characterized by being connected to the side. The battery is arranged inside the area surrounded by the front side of the center frame structure, the side of the front frame structure, and the side of the spare seedling support frame structure in plan view. The agricultural working machine according to claim 1, wherein A hydraulic pump was installed inside the area surrounded by the front side of the center frame structure, the side of the front frame structure and the side of the spare seedling support frame structure in plan view. The agricultural working machine according to claim 1 or claim 2, characterized in that: The engine is arranged inside a region surrounded by the front part of the pair of left and right center frame members, the middle part of the front frame member, and the middle part of the spare seedling support frame member in plan view. In a plan view, the left and right sides of the pair of center frame members are surrounded by the front portion of the center frame member, the side portion of the front frame member, and the side portion of the spare seedling mounting table support frame member. 2. The agricultural work machine according to claim 1, wherein the battery is disposed inside one of the two regions, and the hydraulic pump is disposed inside the other region.
5 . 機体フレームの上部に運転操作部の床部を形成するステツプを配設 するとともに、 同ステップの後方にリャデッキを配設し、 5. At the top of the fuselage frame, a step is formed to form the floor of the driving section, and at the rear of the step,
しかも、 機体フ レームにステ ッ プを支持するためのステ ッ プ支持 フレーム構成体を設け、 同ステツプ支持フレーム構成体でリャデッ キをも支持すべく構成したことを特徴とする農作業機。  In addition, an agricultural working machine characterized in that a step support frame structure for supporting the steps is provided on the body frame, and the step support frame structure is configured to also support the lid deck.
6 . 前記ステップ支持フレーム構成体は、 基端部を左右幅方向に向けて 伸延させるとともに、 先端部を前後方向に向けて伸延させ、 同先端 部でステ ッ プを支持する一方、 前記基端部で リャデッキを支持する ことを特徴とする請求項 5記載の農作業機。 6. The step support frame structure has a base end extending in the left-right width direction, a tip end extending in the front-rear direction, and supporting the step with the tip end. The agricultural working machine according to claim 5, wherein the rear part supports the rear deck.
7 . 前記ステップ支持フレーム構成体の基端部にリャデッキを装着する ためのブラケッ ト を設け、 同ブラケッ トは、 リャデッキに替えて施 肥機を装^できるべく構成したことを特徴とする請求項 5又は請求 項 6記載の農作業機。 7. A bracket for mounting a rear deck is provided at a base end of the step support frame structure, and the bracket is configured so that a fertilizer can be mounted in place of the rear deck. The agricultural work machine according to claim 5 or claim 6.
PCT/JP2001/009127 2001-06-20 2001-10-17 Agricultural machine WO2003000032A1 (en)

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