CN210900383U - Plant tuber harvesting device - Google Patents

Abstract

The utility model provides a plant tuber harvesting device, which comprises a frame, two buckets arranged at the bottom of the frame, an elevating roller device, a vibrating screen mechanism and a speed reducer, wherein the speed reducer is provided with an output shaft, the output shaft drives the elevating roller device to perform turnover motion through a first chain, and the elevating roller device is connected with the buckets end to end; the two first swing rods and the two second swing rods are used for hoisting the vibrating screen mechanism together, and the tops of the two first swing rods extend upwards and are provided with cross rods transversely connected with the free ends of the tops of the first swing rods; the output shaft is coaxially provided with a second chain, the cross rod is provided with a rod sleeve, and the rod sleeve is connected with an eccentric mechanism so as to drive the eccentric mechanism to drive the cross rod to swing back and forth in a reciprocating manner through the second chain; the bottom of the frame is provided with a spring which is obliquely arranged with the vibrating screen mechanism. Through the utility model discloses a plant tuber harvesting apparatus has obviously improved the separation effect of tuber and soil to the reliability of this plant tuber harvesting apparatus when the operation has been improved.

Description

Plant tuber harvesting device

Technical Field

The utility model relates to the technical field of agricultural mechanical equipment, more specifically relates to a plant tuber harvesting apparatus.

Background

Plants with tubers, such as peanuts, potatoes, sweet potatoes, etc., require collection of tubers after the crop is mature because the economically valuable tubers are buried in the soil. For example, at present, most of the planting, harvesting and processing of peanuts are finished manually, and especially, the peanut harvesting link with more than 1/3 of the total labor and more than 50% of the whole peanut production cost is mainly finished manually. Meanwhile, the mechanical harvesting of plant tubers such as peanuts and the like has high efficiency, so that the mechanical harvesting machine can play a great role in the emergency harvesting operation in disaster weather. Therefore, peanut growers urgently want that peanut harvesting can be mechanically harvested like wheat harvesting and rice harvesting.

The applicant finds that the Chinese patent with the publication number of CN108925206A discloses a peanut harvester through search. This prior art is through digger blade, the screen cloth and the smooth flitch of level setting to the realization is excavated, is sieved native operation to the plant that has the peanut. This prior art is carrying out the in-process of results to the peanut, and the plant that will have the peanut after digging the soil through the relieving keeps upright state, but this kind of technical scheme has the defect that the relieving breaks easily, and its excavation shovel that reveals installs before two supports in addition, leads to the excavation shovel to take place to twist in the use easily to lead to the excavation shovel can't keep throughout to insert in order to mention whole plant with reasonable settlement angle slant, this can lead to the efficiency of results to plant tubers such as peanut, potato to descend greatly. In addition, the screen in the prior art is vibrated up and down, so that there is a technical defect that the separation effect of the plants separated from the soil and having soil at the roots is poor when the plants are vibrated to remove the soil adhered to the roots.

In view of the above, there is a need for an improved prior art device for harvesting plant tubers to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to disclose the vibrating device of the plant tuber harvesting device for improve the separation effect of tuber and soil, and improve the reliability.

In order to achieve the above object, the utility model provides a plant tuber harvesting device, which comprises:

the device comprises a rack, two buckets, an elevating roller device, a vibrating screen mechanism and a speed reducer, wherein the two buckets, the elevating roller device, the vibrating screen mechanism and the speed reducer are arranged at the bottom of the rack;

the side, far away from the bucket, of the rack is movably hinged with two first swing rods, the side of the rack is provided with two second swing rods which are movably hinged, the two first swing rods and the two second swing rods jointly hoist the vibrating screen mechanism, and the tops of the two first swing rods extend upwards and are provided with cross rods which are transversely connected with the free ends of the tops of the first swing rods;

the output shaft is coaxially provided with a second chain, the cross rod is provided with a rod sleeve, and the rod sleeve is connected with an eccentric mechanism so as to drive the eccentric mechanism to drive the cross rod to swing back and forth in a reciprocating manner through the second chain;

and a spring obliquely arranged with the vibrating screen mechanism is arranged at the bottom of the rack.

As a further improvement of the utility model, the first swing link is composed of a hoisting section which is obliquely arranged and a connecting section which is vertically arranged with the frame, the hoisting section and the second swing link are arranged in parallel, and the cross rod is transversely connected between the two connecting sections;

the extending direction of the spring is perpendicular to the extending direction of the hoisting section and the extending direction of the second swing rod.

As a further improvement, the sieve mechanism that shakes comprises screen cloth and bounding wall, the bounding wall is suspended in midair by first pendulum rod and second pendulum rod, contained angle between screen cloth and the horizontal plane is 5 ~ 8 degrees.

As a further improvement, the top of frame sets up the mount pad, the reduction gear is installed on the mount pad, the first drive sprocket of output shaft coaxial arrangement and second drive sprocket, dispose coaxial coupling between first drive sprocket and the second drive sprocket.

As a further improvement of the present invention, the lift roller device includes: the device comprises two flexible belts, a plurality of roll shafts which are clamped by the two flexible belts and are distributed at equal intervals, and a driving roller and three driven rollers which are arranged in the roll shafts and support the roll shafts, wherein the driving roller and the three driven rollers are distributed in a rectangular shape and support the roll shafts;

wherein the driving roller is provided with a first driven sprocket connected with a first chain.

As a further improvement of the present invention, the eccentric mechanism includes: the eccentric shaft is vertically penetrated through the disc body, the eccentric shaft is provided with a second driven chain wheel connected with a second chain, the retainer ring forms an accommodating barrel of an integrated structure and is movably hinged with the rod sleeve through the accommodating barrel, and the eccentric shaft vertically penetrates through the disc body in a mode of deviating from the circle center of the disc body.

As a further improvement, the accommodating cylinder is embedded with a first bifurcation part, the rod sleeve integral type sets up a second bifurcation part, set up the cross connecting piece between first bifurcation part and the second bifurcation part.

As a further improvement of the utility model, the utility model also comprises adjustable supporting legs and walking wheels which are arranged at the two sides of the frame;

the adjustable supporting legs comprise inner side plates connected with the frame, connecting plates which are integrally connected with the inner side plates and provided with a plurality of vertically arranged blind holes, and adjusting plates provided with a plurality of vertically arranged through holes, and walking wheels are arranged at the bottoms of the adjusting plates.

As a further improvement of the utility model, the frame sets up perpendicular downwardly extending's stand, the bottom of stand sets up the installation piece, the scraper bowl slope is installed on the installation piece.

As a further improvement, the scraper bowl includes the shovel bottom plate and the perpendicular riser that sets up with the shovel bottom plate, the contained angle that forms between shovel bottom plate and the horizontal plane is 20 degrees.

Compared with the prior art, the beneficial effects of the utility model are that: through the utility model discloses a plant tuber harvesting apparatus has obviously improved the separation effect of tuber and soil to the reliability of this plant tuber harvesting apparatus when the operation has been improved.

Drawings

FIG. 1 is a perspective view of a tuber harvesting apparatus disclosed in the present invention;

FIG. 2 is a perspective view of the tuber harvesting apparatus shown in FIG. 1, with the road wheels and bucket omitted;

FIG. 3 is an enlarged view of arrow A in FIG. 2;

FIG. 4 is a perspective view of the frame;

FIG. 5 is a perspective view of the elevator roller assembly;

FIG. 6 is a side view of the plant tuber harvesting apparatus of the present disclosure;

FIG. 7 is a perspective view of an eccentric mechanism;

fig. 8 is a perspective view of the bucket.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

The terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.

Briefly, the external power of the plant tuber harvesting apparatus disclosed in this embodiment is derived from an internal combustion engine mounted in a vehicle, such as a four-wheel tractor. The power output from the four-wheel tractor is transmitted to the speed reducer 52 via a universal joint (not shown). The speed reducer 52 is provided with an input shaft 501 connected to a universal joint. The power is transmitted to the output shaft 524 after being changed in gear by the reduction gear 52. The power is split into two on the output shaft 524. A part of power is transmitted to the eccentric mechanism, and the vibrating screen mechanism 30 is driven by the first swing rod 41 and the second swing rod 44 to do reciprocating motion back and forth in the horizontal direction, so that the purposes of transmission, soil cleaning and laying are achieved; a part of the power is transmitted to the lift roller means 50 to provide the lift roller means 50 with power for the rotation movement, and the effect of transporting the plants and previously cleaning the soil adhered to the roots of the plants is achieved by a plurality of parallel and equally spaced roller shafts 561 in the lift roller means 50. The base 502 is disposed at the bottom of the decelerator 52, and the base 502 is disposed above the frame 10 and securely connected using bolts and nuts.

In particular, in the present embodiment, the terms "front, back", "front" and "rear" expressing the spatial orientation each refer to a direction indicated by a double-headed arrow N in fig. 7, and the terms "left, right" and "lateral" expressing the spatial orientation each refer to a direction indicated by a double-headed arrow M in fig. 7.

Please refer to fig. 1 to 8, which illustrate a specific embodiment of the harvesting device for tubers according to the present invention.

In this embodiment, the plant tuber harvesting apparatus comprises: the vibrating screen machine comprises a frame 10, two buckets 20 arranged at the bottom of the frame 10, an elevating roller device 50, a vibrating screen mechanism 30 and a speed reducer 52, wherein the speed reducer 52 is provided with an output shaft 524, the output shaft 524 drives the elevating roller device 50 to perform revolving motion through a first chain 525, and the elevating roller device 50 is connected with the buckets 20 end to end. The plant to be harvested and having tubers is excavated out of the soil by the bucket 20, then lifted back by the elevator roller assembly 50 and dropped to the shaker mechanism 30 to perform soil cleaning, and finally discharged from an opening at the rear of the shaker mechanism 30. The tuber of the plant referred to in this embodiment is potato, peanut or other crops with tuber, which is not always enumerated in the specification.

Referring to fig. 4, the frame 10 may be welded using 45# steel to ensure good structural rigidity and stability of the whole. Specifically, the frame 10 is composed of a cross beam 12, two longitudinal beams 11, and two symmetrical downward vertically arranged support beams 13. The cross beam 12 and the longitudinal beam 11 are provided with an installation seat 102 formed by welding 45# steel. A traction bracket 129 similar to a trapezoid is welded above the cross beam 12 so as to be movably and detachably connected with the four-wheel tractor through the traction bracket 129, and the input shaft 501 penetrates out of the traction bracket 129. The rear end of the longitudinal beam 11 forms a hinge hole 111, the middle of the longitudinal beam 11 is provided with a hinge hole 135, and a first swing link 41 and a second swing link 44 disclosed below can respectively swing back and forth based on the parallel posture of the hinge hole 111 and the hinge hole 135 to drive the vibrating screen mechanism 30 to move back and forth in the horizontal direction, so as to perform soil cleaning operation on the plants conveyed by the lifting roller device 50 on the vibrating screen mechanism 30. Meanwhile, in this embodiment, the plant tuber harvesting apparatus further includes adjustable legs and traveling wheels 60 disposed at both sides of the frame 10, and the adjustable legs are disposed at the ends 131 of the support beams 13.

In particular, in the present embodiment, the spring 70 is disposed at the bottom of the frame 10 and is inclined to the vibrating screen mechanism 30. As shown in fig. 6, a positioning rod 103 having a through hole is integrally disposed below a cross beam located at the rear end of the frame 10, and similarly, a positioning rod (not shown, having the same structure as the positioning rod 103) is also disposed at one end of the vibrating screen mechanism 30 close to the lift roller device 50, and a spring 70 is connected thereto. The first swing link 41 is composed of an inclined hoisting section 411 and a connecting section 412 perpendicular to the frame 10, the hoisting section 411 and the second swing link 44 are arranged in parallel, and the cross bar 42 is transversely connected between the two connecting sections 412. The extending direction of the spring 70 is perpendicular to the extending direction of the lifting section 411 and the second swing link 44. In the embodiment, by arranging the spring 70 and other elastic elements, the vibrating screen mechanism 30 plays a role in buffering and delaying under the action of the spring 70 in the process of reciprocating back and forth in the horizontal direction, so that the horizontal vibrating effect of the vibrating screen mechanism 30 is more gradual, and the plant tubers with light weight are effectively prevented from jumping out of the coaming 302 from the screen mesh 301; more importantly, the spring 70 can eliminate the resonance phenomenon of the vibrating screen mechanism 30 and improve the structural stability of the whole plant tuber harvesting device in the long-term operation process.

One side of the frame 10, which is far away from the bucket 20, is movably hinged with two first swing rods 41, the side of the frame 10 is provided with two second swing rods 44 which are movably hinged, the two first swing rods 41 and the two second swing rods 44 jointly hoist the vibrating screen mechanism 30, and the tops of the two first swing rods 41 extend upwards and are provided with a cross rod 42 which is transversely connected with the free ends of the tops of the first swing rods 41. The cross bar 42 is arranged to reciprocate periodically in the horizontal direction under the drive of the eccentric mechanism. Referring to fig. 2, in the present embodiment, the first swing link 41 forms a first hinge point 4111 with the frame 10, the second swing link 44 forms a second hinge point 4411 with the frame 10, the first swing link 41 forms a third hinge point 4113 with the enclosure plate 302, and the second swing link 44 forms a fourth hinge point 4414 with the enclosure plate 302. The first swing link 41 and the second swing link 44 swing the vibrating screen mechanism 30 in the horizontal direction in parallel and synchronously around the first hinge point 4111 and the second hinge point 4411, respectively. Through the above technical solution, the first swing link 41 is synchronously driven to rotate around the first hinge point 4111 formed by the first swing link 41 and the longitudinal beam 11 shown in fig. 2 through the cross rod 42, and simultaneously, the second swing link 44 rotates around the second hinge point 4411. Meanwhile, the third hinge point 4113 and the fourth hinge point 4414 formed by the enclosing plate 302 of the vibrating screen mechanism 30 and the first swing link 41 and the second swing link 44 respectively vibrate back and forth in the direction indicated by the double-headed arrow P in fig. 2 under the driving of the first swing link 41 and the second swing link 44. Specifically, in the present embodiment, the vibration amplitude of the vibrating screen mechanism 30 in the direction indicated by the double-headed arrow P is 32 mm. It should be noted that, the first swing link 41 and the second swing link 44 jointly drive the vibrating screen mechanism 30 is only shown that the first swing link 41 and the second swing link 44 transmit mechanical power to the vibrating screen mechanism 30, and it does not mean that the first swing link 41 and/or the second swing link 44 are power sources for the vibrating screen mechanism 30 to perform reciprocating vibration in the horizontal direction.

Referring to fig. 1 and 4, the frame 10 is provided with a vertical column 13 extending vertically downward, a mounting block 201 is provided at the bottom of the column 13, and the bucket 20 is mounted on the mounting block 201 in an inclined manner. The vibrating screen mechanism 30 is composed of a screen 301 and enclosing plates 302 positioned at two sides of the screen 301, and the enclosing plates 302 are suspended by the first swing link 41 and the second swing link 44. The mesh 301 forms a bent portion 311. Finally, the plant with the tuber after the soil cleaning operation is finished is discharged out of the plant tuber harvesting device from the bent part 311.

Specifically, in the present embodiment, as shown in fig. 6, an included angle between the bottom surface 331 of the screen 301 and the horizontal plane is 3 to 8 degrees, and most preferably 3.5 degrees. The screen 301 is composed of a plurality of grid bars which are arranged in parallel and have a distance of 6-8 mm.

Further, in the present embodiment, the length of the grid bars parallel to the direction indicated by the double-headed arrow P in fig. 2 along the direction indicated by the double-headed arrow P is 90 to 100 cm, and the bending portion 311 is trapezoidal in a top view angle and is horizontally disposed with one side inclined. The bending portion 311 is also composed of a plurality of grid bars arranged in parallel, and the distance between the grid bars is 10-12 mm. Because the screen 301 is composed of two sections of bars with different intervals, the soil blocks with different sizes adhered to the tubers can fall down under the horizontal vibration of the vibrating screen mechanism 30, and the separation effect of the vibrating screen mechanism 30 on the soil adhered to the tubers is further improved.

In this embodiment, the output shaft 524 coaxially fits the second chain 572, and the crossbar 42 is provided with a rod sleeve 43 having a receiving channel 430, the cross-sectional shape of the receiving channel 430 being adapted to the cross-sectional shape of the crossbar 42 to hold the crossbar 42 through the receiving channel 430. Meanwhile, the rod sleeve 43 is connected to an eccentric mechanism to drive the cross rod 42 to swing back and forth through the second chain 572. Meanwhile, in the present embodiment, the mounting seat 102 is disposed on the top of the frame 10, the reducer 52 is mounted on the mounting seat 102, the first driving sprocket 526 and the second driving sprocket 571 are coaxially mounted on the output shaft 524, and the coupling 523 coaxially connected is disposed between the first driving sprocket 526 and the second driving sprocket 571. Meanwhile, the two ends of the cross bar 42 are provided with mounting blocks 421, and are connected with the ends of the connecting sections 412 extending upwards from the top of the first swing link 41 by nuts 422, and the connecting sections 412 are arranged in a perpendicular relationship with the rack 10. The first swing link 41 is obliquely arranged with a hoisting section 411 downward in an integrated manner, and the hoisting section 411 and the connecting section 412 form an integrated structure and jointly form the first swing link 41. An obtuse angle ranging from 135 degrees to 140 degrees is formed between the connecting section 412 and the hoisting section 411.

The enclosure 302 of the vibrating screen mechanism 30 is provided with two hinge holes (not shown) for respectively hinge-connecting the first swing link 41 and the second swing link 44, so as to continuously penetrate through the through holes provided on the lower ends of the first swing link 41 and the second swing link 44 by using nuts and extend into the enclosure 302, thereby enabling the vibrating screen mechanism 30 to swing the vibrating screen mechanism 30 around the third hinge point 4113 and the fourth hinge point 4414 in the direction of the double-headed arrow P in fig. 2. Similarly, a through hole (not shown) is also formed at the joint of the connecting section 412 and the hoisting section 411, a bolt penetrates through the through hole formed at the joint of the connecting section 412 and the hoisting section 411 and extends to the rear end of the longitudinal beam 11 to form a hinge hole 111, and meanwhile, a through hole (not shown) is also formed at the top of the second swing rod 44, and a bolt penetrates through a hinge hole 135 formed in the middle of the longitudinal beam 11 and both form a movable hinge relationship. When the vibrating screen mechanism 30 swings back and forth in the horizontal direction, the first hinge point 4111, the second hinge point 4411, the third hinge point 4113 and the fourth hinge point 4414 always maintain a parallelogram structure. Meanwhile, in order to improve the reliability and stability of the vibrating screen mechanism 30 in the swinging process, in this embodiment, the end of the hoisting section 411 movably hinged to the enclosing plate 302 forms a circular installation part 412, and the joint of the connecting section 412 and the hoisting section 411 forms an installation part 413 protruding in an arc shape. The top of the second swing link 44 forms a circular mounting portion 414, and the end of the second swing link 44, which is movably hinged with the enclosing plate 302, forms a circular mounting portion 442.

The output shaft 524 has a first driving sprocket 526 at one end thereof and a second driving sprocket 571 at the other end thereof, and the first driving sprocket 626 and the second driving sprocket 571 rotate synchronously. Two vertical plates 138 are fixedly arranged at the top of the machine frame 10, and a bearing seat 132 is arranged at the top of each vertical plate 138. The output shaft 524 continues laterally through both bearing blocks 132.

Referring to fig. 1, the output shaft 524 is of a segmented construction and is coaxially connected by a coupling 523. The power output end 521 of the speed reducer 52 extends vertically out of the output shaft 524. The speed reducer 52 adopts various speed reducing devices commonly used in the prior art, and utilizes the difference of gear transmission ratio to reduce the rotation speed of the power input by the input shaft 501 and then synchronously drive the first driving sprocket 526 and the second driving sprocket 571 through the output shaft 524. Specifically, the output speed of the output shaft 524 is 60 to 120 r/min.

As shown in fig. 1, 5, and 6, in the present embodiment, the lift roller device 50 includes: the two flexible belts 56 are arranged in parallel and are arranged close to the inner side of the supporting beam 13, a plurality of roller shafts 561 which are clamped by the two flexible belts 56 and are distributed at equal intervals, a driving roller 551 and three driven rollers 552 which are arranged in the roller shafts 561 and support the roller shafts 561, the driving roller 551 and the three driven rollers 552 are distributed in a rectangular shape, and the roller shafts 561 are supported so as to form a shape similar to a pillow through the plurality of roller shafts 561; the driving roller 551 is disposed with a first driven sprocket 541 connected to the first chain 525. The first driven sprocket 541 drives the driving roller 551 to rotate in the horizontal direction through the transmission shaft 55, and utilizes petal-shaped protrusions formed on the surfaces of the driving roller 551 and the three driven rollers 552 to be embedded into strip-shaped gaps formed between two adjacent roller shafts 561, so as to drive the plurality of roller shafts 561 to perform continuous revolving motion, so as to obliquely and upwards lift the plants with tubers excavated by the bucket 20, and finally throw the plants onto the vibrating screen mechanism 30, and shake soil blocks with large shapes from the strip-shaped gaps formed between the adjacent roller shafts 561 during lifting, thereby greatly reducing the soil cleaning pressure of the subsequent vibrating screen mechanism 30, and remarkably improving the separation effect of the tubers and the soil.

It should be noted that the structure shown in fig. 1 is only an exemplary schematic diagram, and those skilled in the art can recognize that three driven rollers 552 can be transversely mounted inside the end 131 of the support beam 13 through a structure similar to the transmission shaft 55 and can smoothly rotate through the cooperation of bearings (not shown); similarly, the transmission shaft 55 may also be embedded in mechanical components such as beams, plates, columns, etc. at two sides of the frame 10, and smoothly rotate with the aid of bearings (not shown). In the present embodiment, the "lateral direction" refers to a direction indicated by the central axis M in fig. 7.

Referring to fig. 1, 2 and 7, the eccentric mechanism includes: a retainer ring 574 having a through hole, a disk body 5751 disposed in the retainer ring 574, and an eccentric shaft 575 vertically penetrating the disk body 5751, wherein the eccentric shaft 575 is provided with a second driven sprocket 573 connected to a second chain 572. Referring to fig. 6, in actual use, the first chain 525 may be covered with a chain cage 5250 on the outside thereof, while the second chain 572 is covered with a chain cage 5720 on the outside thereof.

The retainer ring 574 forms a receiving cylinder 5741 of an integrated structure, the receiving cylinder 5741 extends in the direction of the cross bar 42, and is movably hinged to the rod cover 43 through the receiving cylinder 5741, and the eccentric shaft 575 vertically penetrates the disc body 5751 in a manner deviating from the center of the disc body 5751. The end parts of the two ends of the eccentric shaft 575 are received by the bearing seat 134, the bottom of the bearing seat 134 is provided with the vertical plate 133, and the vertical plate 133 is arranged above the frame 10 and forms an integral structure with the frame 10. Specifically, in this embodiment, two vertical plates 133 are disposed above the frame 10 and are respectively disposed at two ends of the eccentric mechanism in parallel. Each vertical plate 133 is provided with a bearing seat 134, and both end portions of the eccentric shaft 575 are received by the two bearing seats 134.

Specifically, the cross section of the eccentric shaft 575 is circular, the central axis M of the eccentric shaft 575 and the axial central axis Q of the center of the circular disc body 5751 are arranged in parallel in a staggered manner, and the eccentric distance formed by the circular disc body 5751 in the rotation process is 16 mm. When the eccentric shaft 575 is rotated by the second driven sprocket 573, the eccentric shaft 575 rotates the disc body 5751 in the receiving passage 5740 formed in the retainer 574 and having a circular cross section, so that the retainer 574 is driven by the disc body 5751 to move back and forth in the direction indicated by the double-headed arrow N. Specifically, referring to fig. 7, in the present embodiment, the accommodating tube 5741 is embedded with a first branch portion 5742, the rod cover 43 is integrally provided with a second branch portion 431, and a cross-shaped connecting member 432 is provided between the first branch portion 5742 and the second branch portion 431. In particular, in the present embodiment, the transverse connecting rod of the cross connecting member 432 is movably connected to the two prongs of the second diverging portion 431, so that the cross connecting member 432 can rotate around the transverse connecting rod of the cross connecting member 432 within a certain range during the rotation of the circular disk body 5751.

Referring again to fig. 1, in the present embodiment, the adjustable leg comprises an inner plate 603 connected to the frame 10, a connecting plate 613 integrally connected to the inner plate 603 and provided with a plurality of vertically arranged blind holes (blind holes) having internal threads, and an adjusting plate 601 provided with a plurality of vertically arranged through holes 602, the adjusting plate 601 being provided at the bottom thereof with the road wheels 60. In the in-service use process, can use components such as bolt or locating pin, run through-hole 602 and extend to the blind hole on the different height position that arranges on the connecting plate 613 to adjust the height of walking wheel 60, thereby indirectly realized inserting the scraper bowl 20 height on the vertical direction in the soil, thereby can adapt to the harvesting operation demand of the plant of the different degree of depth and having the tuber of burying in the soil, especially, can show the simplification through above-mentioned technical scheme and insert the scraper bowl 20 and adjust the simplicity in the height on the vertical direction in the soil, have convenient and fast's advantage.

Referring to fig. 1 and 8, in an embodiment, the bucket 20 includes a shovel plate 202 and a vertical plate 203 disposed perpendicular to the shovel plate 202. The included angle formed between the shovel plate 202 and the horizontal plane is 20 degrees, and the front end of the shovel plate 202 is provided with an arc-shaped edge 212.

The key factor of the digging operation of the shovel is that the size of the digging angle α (namely, the included angle formed by the shovel bottom plate 202 and the horizontal plane) of the shovel bottom plate 202 is important, if the digging angle α is too small, the upward moving speed of the mixture on the shovel surface is high, soil leakage is low, digging resistance is low, the digging performance of the digging shovel is poor, soil crushing is not facilitated, if the digging angle α is too large, the digging performance of the digging shovel is good, soil crushing is facilitated, the digging resistance is high, soil backward moving speed is low, soil hilling phenomenon can be generated, the value range of the digging angle α is 17-24 degrees, according to the digging experiment of a sand soil test field, under the condition that the digging depth is 20 cm, the digging operation is respectively carried out by using a bucket 20 with the digging angles of 18 degrees, 20 degrees, 22 degrees and 24 degrees, and the test result shows that the soil hilling phenomenon is the lightest when the digging angle α is 20 degrees.

Meanwhile, in the present embodiment, the bucket 20 is entirely made of 20Cr, and the allowable stress σ is 152.9 MPa. The rear end of the shovel base plate 202 is screwed and fixed by a bolt to a blind hole (not shown) with an internal thread provided in the mounting block 201. Further preferably, a plurality of blind holes with internal threads are also transversely provided on the mounting block 201 to adjust the two transversely arranged buckets 20 for harvesting crops planted in the soil at different row spacings.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A plant tuber harvesting apparatus, comprising:

the vibrating screen comprises a rack (10), two buckets (20) arranged at the bottom of the rack (10), a lifting roller device (50), a vibrating screen mechanism (30) and a speed reducer (52), wherein the speed reducer (52) is provided with an output shaft (524), the output shaft (524) drives the lifting roller device (50) to perform revolving motion through a first chain (525), and the lifting roller device (50) is connected with the buckets (20) end to end;

one side, far away from the bucket (20), of the rack (10) is movably hinged with two first swing rods (41), the side part of the rack (10) is provided with two second swing rods (44) which are movably hinged, the two first swing rods (41) and the two second swing rods (44) are used for hoisting the vibrating screen mechanism (30) together, and the tops of the two first swing rods (41) extend upwards and are provided with cross rods (42) which are transversely connected with the free ends of the tops of the first swing rods (41);

a second chain (572) is coaxially assembled on the output shaft (524), the cross rod (42) is provided with a rod sleeve (43), and the rod sleeve (43) is connected with an eccentric mechanism so as to drive the eccentric mechanism to drive the cross rod (42) to swing back and forth in a reciprocating manner through the second chain (572);

and a spring (70) obliquely arranged with the vibrating screen mechanism (30) is arranged at the bottom of the frame (10).

2. The tuber harvesting device of claim 1, wherein the first swing link (41) is composed of an obliquely arranged lifting section (411) and a connecting section (412) arranged perpendicular to the frame (10), the lifting section (411) and the second swing link (44) are arranged in parallel, and the cross bar (42) is transversely connected between the two connecting sections (412);

the extending direction of the spring (70) is perpendicular to the extending direction of the hoisting section (411) and the second swing rod (44).

3. The tuber harvesting device of claim 2, wherein the vibrating screen mechanism (30) comprises a screen (301) and a surrounding plate (302), the surrounding plate (302) is suspended by a first swing rod (41) and a second swing rod (44), and an included angle between the screen (301) and the horizontal plane is 5-8 degrees.

4. The harvesting apparatus according to any one of claims 1 to 3, wherein a mounting seat (102) is provided on the top of the frame (10), the reducer (52) is mounted on the mounting seat (102), the output shaft (524) is coaxially assembled with a first driving sprocket (526) and a second driving sprocket (571), and a coaxially connected coupler (523) is provided between the first driving sprocket (526) and the second driving sprocket (571).

5. The tuber harvesting apparatus of claim 4, wherein the lift roller arrangement (50) comprises: the device comprises two flexible belts (56), a plurality of roller shafts (561) which are clamped by the two flexible belts (56) and are distributed at equal intervals, a driving roller (551) and three driven rollers (552) which are arranged in the roller shafts (561) and support the roller shafts (561), wherein the driving roller (551) and the three driven rollers (552) are distributed in a rectangular shape and support the roller shafts (561);

wherein the driving roller (551) is provided with a first driven sprocket (541) connected with a first chain (525).

6. The tuber harvesting apparatus of claim 4, wherein the eccentric mechanism comprises: the chain wheel comprises a check ring (574) with a through hole, a disc body (5751) arranged in the check ring (574), and an eccentric shaft (575) vertically penetrating through the disc body (5751), wherein the eccentric shaft (575) is provided with a second driven chain wheel (573) connected with a second chain (572), the check ring (574) forms an integrated containing barrel (5741) and is movably hinged with a rod sleeve (43) through the containing barrel (5741), and the eccentric shaft (575) vertically penetrates through the disc body (5751) in a mode of deviating from the circle center of the disc body (5751).

7. A plant tuber harvesting device according to claim 6, wherein the housing cylinder (5741) is embedded with a first bifurcation part (5742), the rod sleeve (43) is integrally provided with a second bifurcation part (431), and a cross-shaped connecting piece (432) is arranged between the first bifurcation part (5742) and the second bifurcation part (431).

8. The tuber harvesting apparatus of claim 4, further comprising adjustable legs and wheels (60) disposed on either side of the frame (10);

the adjustable supporting leg comprises an inner side plate (603) connected with the frame (10), a connecting plate (613) integrally connected with the inner side plate (603) and provided with a plurality of vertically arranged blind holes, and an adjusting plate (601) provided with a plurality of vertically arranged through holes, wherein a walking wheel (60) is arranged at the bottom of the adjusting plate (601).

9. A plant tuber harvesting device according to claim 4, wherein the frame (10) is provided with a vertical downwardly extending upright (13), the bottom of the upright (13) is provided with a mounting block (201), and the bucket (20) is obliquely mounted on the mounting block (201).

10. The plant tuber harvesting device of claim 9, wherein the bucket (20) comprises a shovel bottom plate (202) and a vertical plate (203) arranged perpendicular to the shovel bottom plate (202), and an included angle formed between the shovel bottom plate (202) and a horizontal plane is 20 degrees.

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