CN114375692A - Harvesting machine - Google Patents

Abstract

The invention provides a harvester. It is desired that the crop can be satisfactorily inserted by the insertion body even if the positions in the left-right direction are different. The harvesting part is provided with a transverse conveying auger (29), and the transverse conveying auger (29) is provided with: a cylindrical auger drum provided with a helical blade (38) for transporting a crop on the outer peripheral portion thereof and rotating around a horizontal shaft core (P4); and a plurality of poking-in bodies (37) which are rotated integrally with the auger drum while entering and exiting along with the rotation of the auger drum, thereby poking the crops to the rear of the machine body; in the horizontal conveying auger (29), a plurality of poking-in bodies (37) are distributed and arranged at different positions in the left-right direction in a state that the rotation tracks (Q1, Q2) of the front end part rotating along with the rotation of the auger drum when viewed from the side of the machine body are different.

Description

Harvesting machine

Technical Field

The invention relates to a harvester such as a combine harvester, a corn harvester and the like.

Background

The harvester includes a harvesting unit for harvesting a crop and a crop conveying device for conveying the harvested crop to the rear side of the machine body, and the harvesting unit includes a transverse conveying auger for conveying the crop in the left-right direction toward the entrance of the crop conveying device.

The horizontal conveying auger is provided with a cylindrical auger drum and a plurality of poking-in bodies, and the plurality of poking-in bodies rotate integrally with the auger drum while entering and exiting from the auger drum along with the rotation of the auger drum, so as to poke in crops backwards. The rotating shaft core of the poking-in body and the rotating shaft core of the packing auger drum are eccentric, and the protruding amount of the poking-in body from the packing auger drum is changed along with the rotation. Conventionally, the plurality of drawer bodies are configured to draw the same trajectory with respect to the movement trajectory of the tip of the auger drum, and the lower part of the front part of the auger drum protrudes most (see, for example, patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2017-158450

Disclosure of Invention

Problems to be solved by the invention

In the above-described conventional configuration, the crop transferred to the vicinity of the inlet of the straw conveyor can be satisfactorily inserted rearward by the insertion body. However, in a portion separated in the left-right direction from the vicinity of the inlet of the crop conveying device, for example, the portion may be left on a side wall of the harvesting unit. Such crops may not exhibit a good dial-in effect.

Therefore, it is desired that the crop can be satisfactorily inserted by the insertion body even if the positions in the left-right direction are different.

Means for solving the problems

The harvester of the invention is characterized in that the harvester comprises: a harvesting unit that harvests a crop; and a crop transport device for transporting the harvested crop to the rear side of the body; the harvesting unit includes: a harvesting section frame having left and right side walls; and a transverse conveying auger which is rotationally driven in a state of crossing the left and right side walls and conveys the crops towards the inlet of the crop conveying device while transferring the crops along the transverse width direction of the machine body; the horizontal conveyance auger includes: a cylindrical auger drum provided with a helical blade for transporting a crop on an outer peripheral portion thereof and rotating around a horizontal shaft core; and a plurality of poking-in bodies which are rotated integrally with the auger drum while passing in and out of the auger drum along with the rotation of the auger drum, so as to poke the crops to the rear of the machine body; in the lateral transfer auger, a plurality of poking bodies are distributed and arranged at different positions in the left-right direction in a state that the front end rotation tracks of the front end rotating along with the rotation of the auger drum are different when viewed from the side of the body.

According to the present invention, the plurality of dial-in bodies dispersedly disposed at different positions in the left-right direction of the horizontal conveyance auger have different rotation trajectories of the front ends when viewed from the side of the body. For example, the manner of the plunging action can be changed by making the rotation trajectories of the leading end of the plunging body near the entrance of the crop conveying device and the plunging body at a position separated from the vicinity of the entrance of the crop conveying device in the left-right direction different from each other. As a result, the pull-in operation can be easily performed for the crop conditions that vary depending on the position in the left-right direction.

Therefore, even if the positions of the horizontal conveying auger in the left and right direction are different, the crops can be excellently inserted by the inserting body.

In the present invention, it is preferable that, in the plurality of the pulling-in bodies, a maximum protruding position of the tip rotation locus of the end side pulling-in body located on the end side in at least one side in the left-right direction of the lateral conveyance auger is set higher than a rotation center position of the auger drum.

According to this configuration, the end-side kickin body located on the end side in the left-right direction of the horizontal conveyance auger can kick in the crop at a position where the maximum protruding position is higher than the rotation center position of the auger drum. As a result, for example, even a crop resting on the side wall of the harvesting section can easily perform a plunging action.

In the present invention, it is preferable that the maximum protruding position of the end-side inserting body is located on an upstream side in a rotational direction from the maximum protruding position of the inserting body corresponding to the entrance of the crop conveying device.

The maximum protruding position of the kick-in body corresponding to the entrance of the crop conveying device is provided at a lower front portion side of the auger drum for good kick-in to the crop conveying device, but the maximum protruding position of the end portion side kick-in body is provided at a higher position on an upstream side in the rotation direction, i.e., an upper side as viewed from the lower front portion side of the auger drum, than the maximum protruding position of the kick-in body corresponding to the entrance. This facilitates the plunging action even for crops that lean against the side wall of the harvesting section.

On the other hand, the end side plunging body is positioned at a higher position in the front part of the auger drum because the maximum protruding position is located on the upstream side in the rotation direction than the plunging body corresponding to the inlet of the work conveying device, and therefore, even if the grain stalks are cut in an upright posture or a posture abutting on the side wall, the plunging action is easily exerted.

In the present invention, it is preferable that the maximum protruding position of the end-side shift-in body is located within a rotation range spanning a front end position and an upper end position of the auger drum.

According to this configuration, the end-side engaging body has the maximum protruding position on the upper front side of the auger drum, and therefore, the object abutting on the side wall can be efficiently acted on.

In the present invention, it is preferable that a cylinder device is provided in a state of being located more laterally outward than the side wall and protruding more upward than an upper surface of the side wall when viewed from the side, and the maximum protruding position of the end portion side insertion body corresponds to a region where the cylinder device protrudes upward from the side wall.

If the cut straw falls outward from the side wall, it may be caught by the cylinder device and be retained. In this configuration, since the maximum projecting position of the end-side kickin body corresponds to the region in which the cylinder device projects upward from the side wall, it is easy to kick in a crop that may get stuck on the cylinder device rearward.

In the present invention, it is preferable that the maximum protruding position of the end-side shift-in body is located on an imaginary line connecting a base end position of a protruding portion of the cylinder device protruding upward from the side wall and a rotation center of the auger drum when viewed from the side.

The leading end side of the crop falling toward the side wall is positioned on the lateral outer side of the side wall, and the root side is positioned on the left-right inner side. In this configuration, the crop that is likely to be caught by the cylinder device is properly applied to the portion where the crop that is fallen down to the side wall is likely to be caught by the cylinder device, and thus the crop can be appropriately thrown in.

In the present invention, it is preferable that a plurality of the end side insertion bodies are provided.

According to this configuration, the crop can be surely inserted with less accidents.

In the present invention, it is preferable that a rotary reel for pulling in a crop rearward is provided above the harvesting unit, and the rotary reel includes: left and right reel frames; support rods provided across the reel frames on the left and right sides; and a plurality of spring teeth which are arranged on the supporting rod at intervals; the end portion side insertion body closest to the side wall among the end portion side insertion bodies is provided at a position closer to the side wall than the spring tooth closest to the side wall.

There is a region in which the elastic teeth are hard to act on the left and right ends of the rotary reel. In this configuration, the end-side engaging body is provided at a position closer to the side wall than the spring tooth closest to the side wall. With this configuration, even in an area where the elastic tooth hardly acts, the crop can be inserted by the end-side insertion body.

In the present invention, it is preferable that a posture holding mechanism for holding the elastic tooth in a hanging posture is provided at a left-right direction side portion of the rotary reel, and the end side inserting body is provided at a side of the horizontal conveyance auger where the posture holding mechanism is provided.

According to this configuration, when the rotary reel rotates, the support lever also rotates integrally, but the elastic teeth maintain the hanging posture by the action of the posture holding mechanism. Thus, the grain and straw can be well poked in. The posture holding mechanism is provided at one end portion in the left-right direction of the rotary reel, and a region where the elastic teeth cannot be provided is generated due to the existence of the posture holding mechanism. Therefore, by providing the end-side kickin body on the side where the posture-retaining mechanism is provided, the crop can be kicked in backward with less omission.

In the present invention, it is preferable that the number of the plunging bodies corresponding to the inlet of the crop conveying device is larger than the number of the end side plunging bodies.

According to this configuration, the crops are gathered at a position corresponding to the entrance of the crop conveying device rather than the end portion side of the horizontal conveying auger, and the crops are densely present. Therefore, by increasing the number of the plunging bodies in this portion, the plunging bodies can be plunging backward with high efficiency.

In the present invention, it is preferable that the auger drum includes, on an inner circumferential side thereof: a support shaft that supports an inner end of the dial-in body; a holding portion that is externally fitted and supported by the support shaft and supports an inner peripheral end portion of the dial-in body; and a coupling member that fixes the dial-in body to the holding portion by fastening the dial-in body in a direction of an axis of the support shaft in a state where the dial-in body is held by the holding portion; the coupling pieces at the holding portions adjacent in the axial direction overlap each other in the axial direction.

According to this configuration, the dial-in body has an inner end supported by the support shaft via the holding portion and a distal end protruding outward from the auger drum. One end side of the holding portion is fitted and supported to the support shaft, and the dial-in body is held on the other end side of the holding portion. The portion to be held is fastened by the coupling member to fix the dial-in body.

Since the coupling member is fastened from both sides in the axial direction, it is in a state of protruding in the axial direction more than a portion fitted and supported to the support shaft. However, since the coupling pieces at the adjacent holding portions overlap each other in the axial center direction, even in the case of supporting the plurality of pick-up bodies to the support shaft, the holding portions can be arranged as close as possible to each other in the axial center direction.

In the present invention, it is preferable that a base end side portion of the holding portion, which is externally fitted and supported by the support shaft, is configured to be narrower in a direction along the shaft core than a portion of the holding portion, which is coupled by the coupling.

According to this configuration, since the base end side portion fitted and supported by the support shaft is narrow, the holding portion can be compactly arranged in the axial direction even when a plurality of holding portions are arranged in the axial direction.

Drawings

Fig. 1 is an overall side view of a combine harvester.

Fig. 2 is a top view of the harvesting section.

Fig. 3 is a sectional view taken along line III-III of fig. 2.

Fig. 4 is a sectional view taken along line IV-IV of fig. 2.

FIG. 5 is a development view of the auger drum.

FIG. 6 is a cross sectional top view of the cross conveying auger.

Fig. 7 is a top view of a harvesting portion of other embodiments.

Description of the reference numerals

8 harvesting part

9 crop conveying device

9a inlet

11 rotating reel

15 reel frame

16 support bar

17 spring tooth

18-posture holding mechanism

22 harvesting part frame

26. 27 side wall

29 horizontal conveying auger

36 auger drum

37 poking-in body

37a end side insertion body

38 helical blade

48 support shaft

50 holding part

50a base end side portion

50b coupling part

54 coupling piece

Front end rotating track of Q1 and Q2

Detailed Description

Hereinafter, a case where the embodiment of the harvester of the present invention is applied to a full-feed combine harvester as an example of the harvester will be described based on the drawings. Note that in the following description, the direction of arrow "F" is referred to as "front side of the body," the direction of arrow "B" is referred to as "rear side of the body" (see fig. 1, 3, and 4), the direction of arrow "L" is referred to as "left side of the body," and the direction of arrow "R" is referred to as "right side of the body" (see fig. 2 and 6).

As shown in fig. 1, this combine harvester is provided with an axial flow type threshing device 3 and a grain tank 4 for storing grains, which are arranged in parallel in the left and right directions, on a traveling machine body 2 provided with a pair of left and right crawler traveling devices 1. A driver 5 is provided in front of the grain tank 4. The grain discharging device 6 is provided for discharging grains stored in the grain box 4 to the outside.

The front part of the machine body is provided with a harvesting part 8 for harvesting standing grain stalks as an example of crops. The rear part of the harvesting part 8 is provided with an intermediate conveying trough 9 as a crop conveying device for conveying the harvested grain stalks to the rear side of the machine body. The harvesting unit 8 and the intermediate conveying chute 9 are supported by the front portion of the threshing device 3 so as to be integrally swingable up and down around a horizontal axis P1. The harvesting unit 8 is configured to be capable of swinging around the horizontal axis P1 integrally with the intermediate transfer chute 9 and performing an up-and-down operation by the telescopic operation of the hydraulic cylinder 10. Above the harvesting part 8, a rotary reel 11 is provided for pulling in the planted crop backward.

The harvesting unit 8 can be lifted and lowered between a harvesting work position where it is lowered to the vicinity of the ground surface to perform harvesting work as shown in fig. 1 and a raised position not shown where it is raised upward substantially around the lateral axis P1.

The rotary reel 11 is supported in a cantilever manner by a pair of left and right support arms 12 extending forward from the rear upper portion of the harvesting unit 8. The left and right support arms 12 are supported to be swingable upward with the rear end portions as fulcrums, and are configured to be drivable and liftable by a hydraulic cylinder 13 (hereinafter, referred to as reel cylinder) as a cylinder device connected to the front and rear intermediate portions thereof.

As shown in fig. 2, 3, and 4, the rotary reel 11 includes a drive shaft 14 extending in the left-right direction and supported by the left and right support arms 12, left and right reel frames 15, a plurality of support rods 16 extending in the left-right direction, a plurality of elastic teeth 17 extending downward, and a posture holding mechanism 18 for holding the elastic teeth 17 in a hanging posture.

The drive shaft 14 is configured such that both left and right end portions are rotatably supported by the front end portions of the left and right support arms 12, respectively, and is rotationally driven by power transmitted from the body side. The left and right reel frames 15 have a substantially star shape having five protrusions. Support bars 16 are respectively erected in the left-right direction across the five top portions of the left and right reel frames 15. Each support rod 16 is rotatably supported by the left and right reel frames 15. The plurality of spring teeth 17 are supported by the support rod 16 in a state of being arranged in the left-right direction.

The posture holding mechanism 18 is disposed in the vicinity of the reel frame 15 on the left side. The posture holding mechanism 18 includes an auxiliary rotating frame 20 having a substantially star shape, and links 21 provided at five top portions of the auxiliary rotating frame 20 and connecting the top portions of the auxiliary rotating frame 20 to the support rods 16, respectively. When the left and right reel frames 15 are rotationally driven around the lateral rotation axis P2, the auxiliary rotating frame 20 is rotationally driven around the lateral axis P3 displaced from the rotation axis P2. Thereby, the latch 17 is rotationally moved around the rotation axis P2 while keeping the downward posture.

The harvesting unit 8 includes a harvesting unit frame 22 composed of a frame structure for supporting the entire harvesting unit 8. The harvesting section frame 22 includes a back plate 24 forming a back surface, a conveying bottom plate 25 forming a bottom surface, left and right side walls 26 and 27 forming left and right side surfaces, and the like, in a frame body 23 formed by connecting square pipes, angle irons having an L-shaped cross section, and the like.

The supporting arm 12 of the rotary reel 11 is supported at the rear upper part of the harvesting part 8. The reel wheel cylinder 13 is provided in a state of being located laterally outward of the side wall 26 and projecting upward of the upper surface of the side wall 26 when viewed from the side. The lower portion of the reel wheel cylinder 13 is supported by the side wall 26 via a bracket, not shown.

A pusher-type cutting device 28 is provided along the front end of the conveying bottom plate 25 so as to extend across the left and right side walls 26, 27. A transverse conveying auger 29 for gathering and conveying the cut rice straws towards the middle side of the transverse width direction of the machine body is erected across the left and right side walls 26 and 27.

The intermediate conveyance duct 9 is configured by installing a conveyor 31 inside a conveyance case 30 formed in a substantially square tubular shape. The conveyor 31 includes a driving rotor 32 and a driven rotor 33 that rotate around a horizontal axis, a pair of left and right conveyor chains 34 wound around the driving rotor and the driven rotor, and a plurality of locking members 35 connected across the pair of left and right conveyor chains 34. The crop conveyed and joined by the horizontal conveyance auger 29 is lifted and conveyed along the bottom surface of the conveyance box 30 by the locking member and is thrown into the front end of the threshing device 3.

The intermediate conveyance duct 9 is provided at a position shifted to the left from the left-right center of the machine body so as to pass on the left side of the cab 5. The harvesting unit 8 has a left-right width substantially equal to the left-right width of the traveling machine body 2, and is connected to the intermediate conveyance duct 9 in a state of being offset to the right.

Next, the horizontal conveyance screw 29 will be explained.

The horizontal conveyance auger 29 includes a horizontal cylindrical auger drum 36 and a rod-like pulling body 37, and the pulling body 37 integrally rotates while advancing from the auger drum 36 in accordance with the rotation of the auger drum 36, thereby pulling in the cut grain stalks rearward.

As shown in fig. 3, 4, and 6, the auger drum 36 is formed in a cylindrical shape with a large diameter. A screw blade 38 for transporting grain stalks is provided on the outer periphery of the auger drum 36. The auger drum 36 rotates counterclockwise in fig. 3 about the transverse axis core. The spiral blades 38 are disposed on the left and right sides of the area facing the inlet 9a of the intermediate conveyance groove 9. The screw blade 38 moves the cut straw laterally toward the area facing the inlet 9a of the intermediate conveyance duct 9 in accordance with the rotation of the auger drum 36. In other words, the right helical blade 38 transfers the harvested straw to the left, and the left helical blade 38 transfers the harvested straw to the right.

In the horizontal conveyance auger 29, a plurality of dial-in bodies 37 are arranged in a distributed manner at different positions in the left-right direction. That is, as shown in fig. 6, a plurality of engaging bodies 37 are provided on a portion of the lateral transfer auger 29 corresponding to the inlet 9a of the intermediate transfer chute 9 and on the right end portion of the lateral transfer auger 29, which is the left-right side.

Five or more dial-in bodies 37 are provided in the portion of the horizontal conveyance screw 29 corresponding to the inlet 9a of the intermediate conveyance duct 9 in a state of different phases in the circumferential direction. That is, six insertion bodies 37 (hereinafter, referred to as inlet side insertion bodies 37a) provided in a region facing the inlet 9a of the intermediate conveyance duct 9 are provided on the auger drum 36 in a state shifted by 60 degrees in phase in the circumferential direction. To explain further, the inlet side shift-in bodies 37a are provided in five or more groups, specifically six groups, and twelve in total, with two shift-in bodies 37 adjacent to each other at the same phase position in the circumferential direction as one group, and with their phases in the circumferential direction different.

Four insertion bodies 37 (hereinafter, referred to as end insertion bodies 37b) provided on the right end portion of the horizontal conveyance auger 29 are provided on the auger drum 36 in a state shifted by 90 degrees in phase in the circumferential direction.

As shown in fig. 6, cover plates 39 and 40 are fixedly provided inside the vicinity of both right and left ends of the auger drum 36. A pair of intermediate support plates 41, 42 are fixedly connected to the interior of the auger drum 36 at intervals. The rotation support shaft 43 is supported by the right cover plate 39 and the right intermediate support plate 41 so as to be rotatable about the lateral shaft center P4. A coupling flange 43a keyed to the rotation support shaft 43 is bolted to the right cover plate 39, and the rotation support shaft 43 is integrally coupled to the auger drum 36.

A fixed support shaft 44 is connected and fixed to the left side wall 27 so as to be coaxial with the rotation support shaft 43. The fixed support shaft 44 rotatably fits around the cover 40 on the left side of the auger drum 36 via a bearing 45. A relay shaft 46 is rotatably supported via a bearing on the left intermediate support plate 42 in a state of being positioned on the same axis as the rotation support shaft 43.

A first eccentric support shaft 48 serving as a support shaft is provided on the right side of the fixed support shaft 44 at a position eccentric with respect to the fixed support shaft 44 via a support bracket 47. The right end of the first eccentric support shaft 48 is supported by the relay shaft 46 in an eccentric state via a support bracket 49. The fixed support shaft 44, the first eccentric support shaft 48, and the relay shaft 46 are connected together in a state in which relative rotation is prevented. Therefore, even if the auger drum 36 rotates, the first eccentric support shaft 48 maintains the same position when viewed from the side.

An inlet side insertion body 37a is supported on the outer peripheral portion of the first eccentric support shaft 48 via a holding portion 50. The inlet side insertion body 37a is supported rotatably about a lateral axis P5 of the first eccentric support shaft 48. As shown in fig. 5, when one end in the axial direction is the first of the plurality of inlet side insertion bodies 37a, the plurality of inlet side insertion bodies 37a are arranged in a state where the phases thereof are sequentially different toward the other end in the axial direction. The seventh inlet side pick-up body 37a is provided in the same phase as the first inlet side pick-up body 37a from the one end in the axial direction, and two inlet side pick-up bodies are arranged in the same phase in this order. The twelve inlet-side pulling-in bodies 37a are configured to be slidably guided by slide guide bodies 51 provided to the auger drum 36 so as to be able to move in and out from the outer peripheral surface of the auger drum 36.

The holding portion 50 is fitted and supported to the first eccentric support shaft 48, and supports an inner peripheral end portion of the inlet side insertion body 37 a. The proximal end portion 50a of the holding portion 50 is fitted to the first eccentric support shaft 48 and is supported to be relatively rotatable. The holding portion 50 holds the inner peripheral end of the inlet side insertion body 37a at an extending portion extending radially outward from the base end side portion 50 a.

A recessed portion 52 into which the inner end portion of the inlet-side dial-in body 37a is inserted is formed in an extended portion of the holding portion 50 in a state of extending in the radial direction. In a state where the inlet side insertion body 37a is inserted into the recessed portion 52, a coupling 54 made of a bolt and a nut is attached to the holding portion 50 and the inlet side insertion body 37a in a state where the coupling passes through the first misalignment support shaft 48 in the axial direction.

The inlet side insertion body 37a is fixed to the holding portion 50 by attaching and fastening the coupling 54. The portion fastened by the coupling member 54 corresponds to the coupling object portion 50 b.

As shown in fig. 6, the base end side portion 50a of the holding portion 50 is narrower in the axial direction than the coupling subject portion 50b fastened by the coupling 54. The holding portions 50 are provided in a state of being close to each other in the axial direction, and the adjacent coupling pieces 54 are in a state of being overlapped with each other in the axial direction.

A second eccentric support shaft 58 is provided on the right side of the relay shaft 46 at a position eccentric with respect to the relay shaft 46 via a support bracket 57. The right end of the second eccentric support shaft 58 is supported by the rotation support shaft 43 in an eccentric state via a support bracket 59. The support bracket 59 is fixedly coupled to the second eccentric support shaft 58 and is relatively rotatably supported by the rotation support shaft 43. Therefore, the second eccentric support shaft 58 maintains the same position as the first eccentric support shaft 48 when viewed from the side even when the auger drum 36 rotates.

An end-side engaging body 37b is attached to an outer peripheral portion of the second eccentric support shaft 58 via a holding portion 50 so as to be rotatable about an axial center P6 along the second eccentric support shaft 58. The four end side insertion bodies 37b are configured to be slidably guided by slide guide bodies 51 provided on the auger drum 36 so as to be able to move in and out from the outer peripheral surface of the auger drum 36. The four end side insertion bodies 37b are provided in a right region of the first misalignment support shaft 48 in a state of being arranged at intervals in the shaft center direction. The supporting structure of the end side insertion body 37b with respect to the second eccentric support shaft 58 is the same as that of the inlet side insertion body 37 a.

As shown in fig. 2 and 3, the first eccentric support shaft 48 and the second eccentric support shaft 58 are provided at different positions in the circumferential direction of the rotary support shaft 43 when viewed from the side. In the harvesting attitude with the harvesting unit 8 close to the ground, the first eccentric support shaft 48 is located obliquely forward and downward with respect to the rotation support shaft 43, and the second eccentric support shaft 58 is located obliquely forward and upward with respect to the rotation support shaft 43.

As shown in fig. 4, four mounting holes 60 that are opened to a large extent for mounting or dismounting the dial-in body 37 are formed in the auger drum 36 at positions corresponding to the mounting positions of the dial-in body 37, and the mounting holes 60 are closed by a detachable cover 61. The covers 61 are fixed to the packing auger drum 36 by a plurality of bolts 62.

When the auger drum 36 is rotated counterclockwise about the axial center P4 of the rotary support shaft 43 in fig. 3 by driving the rotary support shaft 43 to rotate, the inlet side drawer body 37a is rotated along with the axial center P5 of the first eccentric support shaft 48. The end-side engaging body 37b rotates around the shaft center P6 of the second eccentric support shaft 58.

At this time, the distances between the slide guide 51 provided on the peripheral surface of the auger drum 36 and the first and second eccentric support shafts 48 and 58 vary according to the rotational phase, and the drawer bodies 37 rotate while moving in and out of the auger drum 36.

As a result, the rotation trajectories of the tip ends of the inlet side insertion body 37a and the end side insertion body 37b, which rotate as the auger drum 36 rotates, when viewed from the side of the body are different from each other. That is, the pick-up bodies 37 whose tip end rotation trajectories Q1 and Q2 viewed from the side of the body of the tip end portion rotating in accordance with the rotation of the auger drum 36 are different from each other in the left-right direction of the lateral transfer auger 29.

As shown in fig. 3, the maximum projection position M1 of the front end rotation locus Q1 of the inlet side insertion body 37a from the outer peripheral portion of the auger drum 36 is located at a position below the front portion of the auger drum 36. With this configuration, the crop transported in the lateral direction by the lateral transport auger 29 is favorably carried into the inlet a of the intermediate transport chute 9 by the inlet side carrying body 37 a.

On the other hand, as shown in fig. 4, the maximum projecting position M2 of the outer peripheral portion of the self auger drum 36 on the tip end turning locus Q2 of the end side inserting body 37b is located on the upstream side in the rotation direction from the maximum projecting position M1 of the tip end turning locus Q1 of the inlet side inserting body 37a in the region above the rotation axis P4 of the auger drum 36.

As shown in fig. 4, in a state where the harvesting unit 8 is lowered to the harvesting operation position, the maximum protruding position M2 of the end side poking body 37b is located at a position higher than the rotation center position of the auger drum 36 and within the rotation range from the front end position to the upper end position of the auger drum 36. To be more specific, the maximum protruding position M2 of the end-side inserting body 37b is located on a region where the reel-up wheel cylinder 13 protrudes upward from the side wall 26, and is located on an imaginary line Z connecting the base end position of the protruding portion of the reel-up wheel cylinder 13 protruding upward from the side wall 26 and the rotation center of the auger drum 36 when viewed from the side in the region.

With this configuration, even when the crop at the right end of the horizontal conveyance auger 29 is tilted to the horizontal outside and is leaned against the upper side of the side wall and is caught by the reel cylinder 13 to be accumulated, the crop can be well driven in.

[ other embodiments ]

(1) In the above embodiment, the end-side engaging body 37b closest to the side wall among the end-side engaging bodies 37b is provided at a position further from the side wall 26 than the elastic tooth 17 closest to the side wall 26, but as shown in fig. 7, the end-side engaging body 37b closest to the side wall 26 may be provided at a position closer to the side wall 26 than the elastic tooth 17 closest to the side wall.

(2) In the above embodiment, the maximum protruding position M2 of the end-side inserting body 37b is located in the region where the reel-up wheel cylinder 13 protrudes upward from the side wall 26, and is located on the imaginary line Z connecting the base end position of the protruding portion of the reel-up wheel cylinder 13 protruding upward from the side wall 26 to the rotation center of the auger drum 36 when viewed from the side, but instead of this, the configuration may be configured as described in (2-1), (2-2), (2-3), (2-4), (2-5) below.

(2-1) the maximum projecting position M2 of the end-side inserting body 37b is located at a position shifted to the downstream side or the upstream side in the drum rotation direction with respect to the virtual line Z.

(2-2) the maximum projecting position M2 of the end-side inserting body 37b is located at a position deviated from the region where the side wall 26 projects upward from the reel cylinder 13.

(2-3) the maximum protruding position M2 of the end-side engaging body 37b is located at a position deviated from the range of rotation spanning the front end position and the upper end position of the auger drum 36.

(2-4) the maximum projecting position M2 of the end part side inserting body 37b is located at a position lower than the rotation center position of the auger drum 36.

(2-5) the maximum projecting position M2 of the end side insertion body 37b is located on the downstream side in the rotational direction from the maximum projecting position M1 of the inlet side insertion body 37 a.

(3) In the above embodiment, the coupling 56 of the holding portion 50 is configured to overlap each other in the axial direction, but a configuration may be adopted in which the coupling 56 does not overlap in the axial direction.

(4) In the above embodiment, the base end side portion 50a of the holding portion 50 is configured to be narrower in the axial direction than the coupling target portion 50b, but the base end side portion 50a of the holding portion 50 may be configured to be the same width as or wider than the coupling target portion 50 b.

Industrial applicability

The invention can be applied to harvesters such as combine harvesters, corn harvesters and the like.

Claims (12)

1. A harvester is characterized by comprising: a harvesting unit that harvests a crop; and a crop transport device for transporting the harvested crop to the rear side of the body;

the harvesting unit includes: a harvesting section frame having left and right side walls; and a transverse conveying auger which is rotationally driven in a state of crossing the left and right side walls and conveys the crops towards the inlet of the crop conveying device while transferring the crops along the transverse width direction of the machine body;

the horizontal conveyance auger includes: a cylindrical auger drum provided with a helical blade for transporting a crop on an outer peripheral portion thereof and rotating around a horizontal shaft core; and a plurality of poking-in bodies which are rotated integrally with the auger drum while passing in and out of the auger drum along with the rotation of the auger drum, so as to poke the crops to the rear of the machine body;

in the lateral transfer auger, the plurality of pulling-in bodies are dispersedly arranged at different positions in the left-right direction in a state where the front end rotation trajectories of the front end portions rotating along with the rotation of the auger drum are different when viewed from the side of the body.

2. The harvester of claim 1,

in the plurality of the poking-in bodies, the maximum protruding position of the front end rotation track of the end part side poking-in body positioned at the end part side from the outer peripheral part of the auger drum is set to be higher than the rotation center position of the auger drum at least at one side of the transverse conveying auger in the left-right direction.

3. The harvester of claim 2,

the maximum protruding position of the end-side insertion body is located on the upstream side in the rotation direction than the maximum protruding position of the insertion body corresponding to the entrance of the crop transport device.

4. The harvester of claim 2 or 3,

the maximum protruding position of the end side poking-in body is located in a rotating range spanning the front end position and the upper end position of the packing auger drum.

5. The harvester of any one of claims 2 to 4,

a cylinder device is provided in a state of being located more laterally outward than the side wall and protruding more upward than an upper surface of the side wall when viewed from the side,

the maximum protruding position of the end-side insertion body corresponds to a region where the cylinder device protrudes upward from the side wall.

6. The harvester of claim 5,

the maximum protruding position of the end-side engaging body is located on an imaginary line connecting a base end position of a protruding portion of the cylinder device protruding upward from the side wall and a rotation center of the auger drum when viewed from the side.

7. The harvester of any one of claims 2 to 6,

the end-side engaging body includes a plurality of end-side engaging bodies.

8. The harvester of claim 7,

a rotary reel which is arranged above the harvesting part and used for pulling the crops backwards,

the rotary reel is provided with: left and right reel frames; support rods provided across the reel frames on the left and right sides; and a plurality of spring teeth which are arranged on the supporting rod at intervals;

the end portion side insertion body closest to the side wall among the end portion side insertion bodies is provided at a position closer to the side wall than the spring tooth closest to the side wall.

9. The harvester of claim 8,

a posture holding mechanism for maintaining the elastic teeth in a drooping posture is arranged at one side part in the left and right directions of the rotary reel,

the end side poking-in body is arranged on one side of the transverse conveying auger, which is provided with the posture holding mechanism.

10. The harvester of claim 9,

the number of the plunging bodies corresponding to the inlet of the crop conveying device is larger than that of the end side plunging bodies.

11. The harvester of any one of claims 1 to 10,

the inner periphery side of the auger drum is provided with: a support shaft that supports an inner end of the dial-in body; a holding portion that is externally fitted and supported by the support shaft and supports an inner peripheral end portion of the dial-in body; and a coupling member that fixes the dial-in body to the holding portion by fastening the dial-in body in a direction of an axis of the support shaft in a state where the dial-in body is held by the holding portion;

the coupling pieces at the holding portions adjacent in the axial direction overlap each other in the axial direction.

12. The harvester of claim 11,

the base end side portion of the holding portion, which is externally fitted and supported by the support shaft, is configured to be narrower in the axial direction than a portion of the holding portion, which is coupled by the coupling.

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