Crawler-type transport vehicle for agriculture

Abstract

The crawler-type transport vehicle comprises a plurality of crawler-type walking mechanisms and a vehicle frame body arranged between the crawler-type walking mechanisms, and a driving mechanism in transmission connection with the crawler-type walking mechanisms and a lifting mechanism capable of achieving lifting are arranged on the surface of the vehicle frame body; the lifting mechanism can drive the height of the metal compartment to change, and the metal compartment can better adapt to the ground with different heights; when the lifting mechanism loses efficacy, the limiting mechanism enables the height of the lifting mechanism not to change greatly, and locking under the emergency condition is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural vehicles, and in particular to a crawler transport vehicle used for agriculture. Background Art

[0002] Agricultural crawler transporters are a type of transport vehicle designed specifically for the agricultural sector. They have multiple functions and uses to adapt to complex terrain and environments. Agricultural crawler transporters can travel in a variety of complex terrain conditions, such as mountains, paddy fields, deserts, etc., which allows them to be used in a wide range of agricultural fields. Such transporters can carry a large amount of cargo and help farmers complete various agricultural tasks more efficiently. The current crawler track is a flexible chain ring driven by a driving wheel and surrounding the driving wheel, guide wheel, and inducer wheel. The crawler track consists of track shoes and track pins. The track pins connect the track shoes to form a track chain.

[0003] The application announcement number is CN106585746A, which discloses an electric mountain orchard crawler conveyor. Combined with its specification and drawings, its scheme is mainly composed of a frame, a carriage, two sets of independent crawler mechanisms, two independent wheel hub motors and a controller. The front end of the frame is provided with a rotating bracket, the front end of the carriage is hinged with the rotating bracket, and the rear end of the carriage is provided with a locking fork. However, in its scheme, the carriage can only be flipped, but since agricultural transport vehicles need to work in complex terrains such as farmland, orchards, and greenhouses. If the carriage cannot realize the lifting function, it cannot adapt to the operation requirements of different heights. Of course, the support safety of the carriage after lifting is also a potential problem. Summary of the invention

[0004] The present invention mainly aims at the problems existing in the use of the carriage of an agricultural crawler transport vehicle, and invents a crawler transport vehicle for agriculture. The lifting mechanism can drive the metal carriage to change its height. The crawler transport vehicle adopting this structural design can operate in complex terrains such as farmland, orchards, and mountains. When the lifting cylinder fails, the entire limit support column will slide the second support plate outward, and the second support plate will also drive the first support plate to slide outward, so that the first support plate will continuously squeeze the damper to slowly stop, and the limit support plate can resist the second support column. After the second support column is stuck, the entire lifting mechanism cannot continue to descend, and this structure is used to achieve locking in an emergency.

[0005] The inventive object of the present invention is achieved through the following technical scheme: a crawler transport vehicle for agriculture, comprising a plurality of crawler traveling mechanisms, a frame body arranged between the crawler traveling mechanisms, the surface of the frame body being provided with a driving mechanism which is transmission-connected to the crawler traveling mechanisms and a lifting mechanism which can realize lifting and lowering.

[0006] Preferably, a control mechanism is provided on the surface of the frame body on one side close to the driving mechanism, a limiting mechanism for limiting the descent of the lifting mechanism is also provided between the lifting mechanism and the frame body, and a metal carriage is provided on the surface of the lifting mechanism.

[0007] Preferably, the crawler walking mechanism includes a roller support frame, a driving roller, a driven roller and a crawler track, the surface of the roller support frame is fixedly connected to the bottom of the frame body, a plurality of driven rollers are rotatably provided inside the roller support frame, driving rollers are provided at both ends of the roller support frame, at least one driving roller is transmission-connected to the driving mechanism, at least one driving roller is rotatably connected to the end of the roller support frame, and the surfaces of the driving roller and the driven roller are provided with crawlers.

[0008] Preferably, the driving mechanism includes an engine, a gearbox, a first transmission wheel, a second transmission wheel and a transmission shaft, the engine is arranged on the surface of the frame body, the gearbox is arranged at the bottom of the frame body, transmission shafts are provided on both sides of the gearbox, the end of the engine is connected to the first transmission wheel, the end of the power input shaft of the gearbox is connected to the second transmission wheel, the first transmission wheel and the second transmission wheel are connected by a first transmission belt, and the transmission shaft is connected to the inside of the driving roller.

[0009] Preferably, the control mechanism comprises a speed control lever and a hand support, the hand support is arranged on both sides of the surface of the frame body, and the speed control lever is used to adjust the speed gear of the gearbox.

[0010] Preferably, the lifting mechanism includes a first lifting support plate, a second lifting support plate, a hinge shaft, a lifting cylinder and a lifting platform, a mounting groove is provided on the surface of the frame body, one end of a plurality of first lifting support plates is hinged to one side of the mounting groove, one end of a plurality of second lifting support plates is hingedly connected to the other side of the mounting groove, the middle parts of the first lifting support plate and the second lifting support plate are hingedly connected by a hinge shaft, the other ends of the first lifting support plate and the second lifting support plate are hinged to the inside of the lifting platform, a first support column and a second support column are provided between the first lifting support plate and the second lifting support plate, a lifting cylinder is hingedly connected between the first support column and the second support column, and the metal carriage is arranged on the surface of the lifting platform.

[0011] Preferably, a first hinged support block is provided on one side of the first support column, a second hinged support block is provided on the bottom side of the frame body, the telescopic end of the lifting cylinder body is hinged to the inside of the first hinged support block, and the other end is hinged to the inside of the second hinged support block.

[0012] Preferably, the lifting cylinder body is a hydraulic cylinder, and the surface of the frame body is also provided with a vane oil pump for providing high-pressure liquid to the hydraulic cylinder. The power input end of the vane oil pump is provided with a third transmission wheel, and the driving mechanism is provided with a fourth transmission wheel. The third transmission wheel and the fourth transmission wheel are connected by a second transmission belt. This arrangement is to enable the position change of the piston of the lifting cylinder body.

[0013] Preferably, the limiting mechanism includes a limiting support plate, a limiting support column, a damper, a first support plate, a second support plate and a limiting convex plate, one end of the limiting support plate is hingedly connected to the second support column, the other end of the limiting support plate is hingedly connected to the limiting support column, the damper is arranged at the bottom of one side of the frame body, the end of the piston rod of the damper is connected to the first support plate, the surface of the first support plate is provided with a second support plate, the second support plate is parallel to the surface of the frame body, the surface of the second support plate is provided with a plurality of limiting convex plates, the gap between adjacent limiting convex plates is a limiting groove, the limiting support column can be stuck in the inside of the limiting groove, and this arrangement is to achieve the limitation of the lifting mechanism.

[0014] Preferably, the limiting support column includes a circular area and a rectangular area, the circular area is hingedly connected to the end of the limiting support plate, and the rectangular area can be stuck in the inside of the limiting groove. The bottom of the metal carriage is provided with a box boss, and the inside of the box boss is provided with a rectangular through hole. This arrangement is to enable the bottom of the metal carriage to accommodate the limiting support column.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The lifting mechanism can drive the metal carriage to change its height. When the crawler transport vehicle adopts this structural design and operates in complex terrains such as farmland, orchards, and mountains, the lifting function of the metal carriage can help the vehicle better adapt to the ground at different heights and maintain stability; the lifting function of the metal carriage makes it more convenient to pick fruits or prune trees at high places, and the fruits or pruned branches and leaves can be directly placed in the carriage, reducing the labor intensity and time of manual handling. The lifting function of the metal carriage can make loading and unloading of goods more convenient, especially when the goods need to be loaded to a higher position, such as on a truck or other means of transportation; 2. When the lifting cylinder fails, the entire limit support column will slide outward with the second support plate, and the second support plate will also drive the first support plate to slide outward, so that the first support plate will The damper is continuously squeezed to slowly stop, and the limit support plate can resist the second support column. After the second support column is stuck, the entire lifting mechanism cannot continue to descend. Utilizing this structure, first of all, when the entire lifting cylinder fails, the height of the lifting mechanism will not change much, thus realizing locking in an emergency situation to prevent users from being pinched or the entire equipment from being damaged; 3. Compared with the traditional direct locking method, this effect of slowly stopping the metal carriage can effectively remind the user that the lifting cylinder has failed at this time, further preventing safety accidents when the user uses it; 4. Under normal circumstances, the rectangular area on the entire limit support column is stuck inside the rectangular through hole on the box boss, and the circular area is stuck at the end of the limit support plate. Therefore, the limit support plate and the limit support column are stored, which does not affect the normal operation of the previous lifting mechanism and brings convenience to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of a first embodiment of the present invention; Figure 2 It is a partial stereogram of the first embodiment of the present invention; Figure 3 is a perspective view of a first embodiment of the present invention; Figure 4 It is a partial enlarged view of the first embodiment of the present invention; Figure 5 is a perspective view of a second embodiment of the present invention; Figure 6 is a partial stereogram of a second embodiment of the present invention; Figure 7 It is a partial stereoscopic diagram of the second embodiment of the present invention.

[0017] Markings in the figure: 1. crawler walking mechanism; 11. roller support frame; 12. driven roller; 13. driving roller; 14. crawler; 2. frame body; 21. mounting groove; 22. second articulated support block; 3. lifting mechanism; 31. first lifting support plate; 32. second lifting support plate; 33. hinge shaft; 34. first support column; 35. second support column; 36. lifting cylinder; 37. lifting platform; 341. first articulated support block; 4. driving mechanism; 41. engine; 42. gearbox; 43. first transmission Wheel; 44, second transmission wheel; 45, transmission shaft; 46, first transmission belt; 47, fourth transmission wheel; 5, control mechanism; 51, speed control lever; 52, hand support; 6, metal carriage; 61, box boss; 7, limiting mechanism; 71, limiting support plate; 72, limiting support column; 73, damper; 74, first support plate; 75, second support plate; 76, limiting convex plate; 77, limiting groove; 721, circular area; 722, rectangular area; 8, vane oil pump; 81, third transmission wheel; 82, second transmission belt. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings: like Figures 1 to 4As shown, a crawler transport vehicle for agriculture, the first embodiment of the present invention: a crawler transport vehicle for agriculture, comprising two crawler walking mechanisms 1 placed and arranged, a frame body 2 fixedly installed between the crawler walking mechanisms 1, wherein each crawler walking mechanism 1 comprises a roller support frame 11, a driving roller 13, a driven roller 12 and a crawler track 14, the surface of the roller support frame 11 is fixedly connected to the bottom of the frame body 2, the interior of the roller support frame 11 is rotatably connected with three driven rollers 12, and the two ends of the roller support frame 11 are connected to the bottom of the frame body 2. A driving roller 13 is provided at the end, one of which is connected to the driving mechanism 4 by transmission, and the other driving roller 13 is rotatably connected to the end of the roller support frame 11, and the surfaces of the driving roller 13 and the driven roller 12 are provided with a crawler 14, and the surface of the frame body 2 is provided with a driving mechanism 4 connected to the crawler-type walking mechanism 1 by transmission, and the driving mechanism 4 includes an engine 41, a gearbox 42, a first transmission wheel 43, a second transmission wheel 44 and a transmission shaft 45, and the engine 41 is arranged on the surface of the frame body 2, and the gearbox 42 is arranged on the frame body 2. At the bottom of the frame body 2, the gearbox 42 adopts a traditional gear transmission gearbox on the market. A transmission shaft 45 is provided on both sides of the gearbox 42. The end of the engine 41 is connected to a first transmission wheel 43, and the end of the power input shaft of the gearbox 42 is connected to a second transmission wheel 44. The first transmission wheel 43 and the second transmission wheel 44 are connected by a first transmission belt 46. The transmission shaft 45 is connected to the inside of the driving roller 13. After such a setting, the rotation shaft of the engine 41 can drive the first transmission wheel 43 when it rotates, and the first transmission wheel 43 is connected to the first transmission belt 46. 46 drives the second transmission wheel 44. When the second transmission wheel 44 rotates, the gearbox 42 starts to change speed and finally the transmission shaft 45 starts to rotate. When the transmission shaft 45 rotates, it drives the driving roller 13 to rotate, and the driving roller 13 drives the crawler track 14 to start moving. During the movement of the crawler track 14, another driving roller 13 and the driven roller 12 play a supporting and guiding role. In this way, the entire crawler transport vehicle can travel in complex terrains such as farmlands, orchards, and greenhouses, and the contact area between the crawler track 14 and the ground is larger to avoid crushing the land.

[0019] In the first embodiment, a control mechanism 5 is provided on one side of the surface of the frame body 2 close to the driving mechanism 4, wherein the control mechanism 5 includes a speed control lever 51 and a hand support 52, and the hand support 52 is arranged on both sides of the surface of the frame body 2. The speed control lever 51 is used to adjust the speed gear of the gearbox 42, so as to control the walking speed of the entire crawler transport vehicle.

[0020] In the first embodiment, a lifting mechanism 3 capable of lifting and lowering is provided on the surface of the frame body 2, and a metal carriage 6 is provided on the surface of the lifting mechanism 3, wherein the metal carriage 6 and the frame body 2 are formed by mutually fixedly connecting the aluminum alloy profiles, and the lifting mechanism 3 comprises a first lifting support plate 31, a second lifting support plate 32, a hinge shaft 33, a lifting cylinder 36 and a lifting platform 37, and a mounting groove 21 is provided on the surface of the frame body 2, one end of a plurality of first lifting support plates 31 is hinged to one side of the mounting groove 21, and one end of a plurality of second lifting support plates 32 is hinged to the other side of the mounting groove 21, and the middle parts of the first lifting support plates 31 and the second lifting support plates 32 are hingedly connected by the hinge shaft 33. The other ends of the first lifting support plate 31 and the second lifting support plate 32 are hinged to the inside of the lifting platform 37, and a first support column 34 and a second support column 35 are provided between the first lifting support plate 31 and the second lifting support plate 32. A lifting cylinder 36 is hinged between the first support column 34 and the second support column 35. The metal carriage 6 is arranged on the surface of the lifting platform 37, and a first hinged support block 341 is provided on one side of the first support column 34. A second hinged support block 22 is provided on one side of the bottom of the frame body 2. The telescopic end of the lifting cylinder 36 is hinged to the inside of the first hinged support block 341, and the other end is hinged to the inside of the second hinged support block 22. In order to make the lifting cylinder 36 have better support, A hydraulic cylinder is selected, and a vane oil pump 8 for providing high-pressure liquid to the hydraulic cylinder is further provided on the surface of the frame body 2. A third transmission wheel 81 is provided at the power input end of the vane oil pump 8. A fourth transmission wheel 47 is provided on the driving mechanism 4. The third transmission wheel 81 and the fourth transmission wheel 47 are connected by a second transmission belt 82. After such an arrangement, the engine 41 can drive the fourth transmission wheel 47 to rotate while driving the first transmission wheel 43. When the fourth transmission wheel 47 rotates, it will drive the third transmission wheel 81 through the second transmission belt 82. The third transmission wheel 81 provides the vane oil pump 8 with a power source. The vane oil pump 8 can provide high-pressure liquid to the lifting cylinder body 36. When the lifting cylinder body 36 receives the high-pressure liquid, the piston rod inside it will not The lifting cylinder 36 is continuously extended. At this time, the length of the entire lifting cylinder 36 will change. During this length change process, one end of the lifting cylinder 36 rotates relative to the second hinge support block 22, and the other end rotates relative to the first hinge support block 341, so that the piston rod can push the first support column 34 to change its position. When the position of the first support column 34 changes, one end of each first lifting support plate 31 rotates relative to one side in the installation groove 21, and the angle of each first lifting support plate 31 relative to the surface of the frame body 2 changes. Similarly, one end of each second lifting support plate 32 also rotates relative to the other side of the installation groove 21, and the angle of one end of each second lifting support plate 32 relative to the surface of the frame body 2 also changes.The hinged shaft 33 in the middle of the first lifting support plate 31 and the second lifting support plate 32 plays a supporting and guiding role. Then the other ends of the first lifting support plate 31 and the second lifting support plate 32 will rotate relative to the bottom of the lifting platform 37, thereby continuously pushing the height of the lifting platform 37 to change. At this time, the height of the metal carriage 6 can also change. The crawler transport vehicle with this structural design operates in complex terrains such as farmlands, orchards, and mountains. The lifting function of the metal carriage 6 can help the vehicle better adapt to the ground at different heights and maintain stability; the lifting function of the metal carriage 6 makes it more convenient to pick fruits or prune trees at high places. The fruits or pruned branches and leaves can be directly placed in the carriage, reducing the labor intensity and time of manual handling. The lifting function of the metal carriage 6 can make loading and unloading of goods more convenient, especially when the goods need to be loaded to a higher position, such as on a truck or other means of transportation.

[0021] like Figures 5 to 7As shown, the second embodiment of the present invention is different from the first embodiment in that a limiting mechanism 7 for limiting the descent of the lifting mechanism 3 is further provided between the lifting mechanism 3 and the frame body 2, a box boss 61 is provided at the bottom of the metal carriage 6, a rectangular through hole 62 is provided inside the box boss 61, the limiting mechanism 7 includes a limiting support plate 71, a limiting support column 72, a damper 73, a first support plate 74, a second support plate 75 and a limiting convex plate 76, one end of the limiting support plate 71 is hingedly connected to the surface of the second support column 35, the other end of the limiting support plate 71 is hingedly connected to the limiting support column 72, the damper 73 is arranged at the bottom of one side of the frame body 2, and the piston rod end of the damper 73 is connected to the first support The support plate 74, the surface of the first support plate 74 is provided with a second support plate 75, the second support plate 75 is parallel to the surface of the frame body 2, the surface of the second support plate 75 is provided with a plurality of limiting convex plates 76, the gap between adjacent limiting convex plates 76 is a limiting groove 77, the limiting support column 72 can be stuck in the inside of the limiting groove 77, the limiting support column 72 includes a circular area 721 and a rectangular area 722, the circular area 721 is hingedly connected to the end of the limiting support plate 71, and the rectangular area 722 can be stuck in the inside of the limiting groove 77. It should be noted that the first support plate 74 and the second support plate 75 can slide relative to the frame body 2, and a gap is left between the two. After such an arrangement, under normal circumstances The cam 722 is engaged with the second support column 71 and the second support column 72 is engaged with the first support column 71. The cam 722 is engaged with the second support column 71 and the second support column 72 is engaged with the second support column 35. The cam 722 is engaged with the second support column 71 and the second support column 72 is engaged with the second support column 35. The cam 722 is engaged with the second support column 71 and the second support column 72 is engaged with the second support column 35. The cam 722 is engaged with the second support column 71 and the second support column 72 is engaged with the second support column 35. The cam 722 is engaged with the second support column 71 and the second support column 72 is engaged with the second support column 35. The plurality of limit grooves 77 can thus find suitable positions for the metal carriages 6 at different heights. At this time, when the lifting cylinder 36 fails, the entire limit support column 72 will slide the second support plate 75 outward, and the second support plate 75 will also drive the first support plate 74 to slide outward, so that the first support plate 74 will continue to squeeze the damper 73 and slowly stop. The limit support plate 71 can resist the second support column 35. After the second support column 35 is stuck, the entire lifting mechanism 3 cannot continue to descend. By using this structure, the height of the lifting mechanism 3 will not change much when the entire lifting cylinder 36 fails, and locking in an emergency is achieved to prevent users from being pinched or the entire equipment from being damaged.Furthermore, compared with the traditional direct locking method, the effect of slowly stopping the metal carriage 6 can effectively remind the user that the lifting cylinder 36 has failed, further preventing safety accidents when the user uses it.

[0022] Working principle and use method of the present invention: The user places his hand on the surface of the hand support 52, and then starts the engine 41 to drive the first transmission wheel 43 when the shaft rotates. The first transmission wheel 43 drives the second transmission wheel 44 through the first transmission belt 46. When the second transmission wheel 44 rotates, the gearbox 42 starts to change speed and finally the transmission shaft 45 starts to rotate. When the transmission shaft 45 rotates, it drives the driving roller 13 to rotate, and the driving roller 13 drives the crawler 14 to start moving. During the movement of the crawler 14, the other driving roller 13 and the driven roller 12 play a supporting and guiding role. In this way, the entire crawler transport vehicle can travel in complex terrains such as farmlands, orchards, and greenhouses, and the speed control lever 51 is used to adjust the speed gear of the gearbox 42. In this way, the travel speed of the entire crawler transport vehicle is controlled; When it is necessary to control the height of the metal carriage 6 to change, the engine 41 can drive the fourth transmission wheel 47 to rotate while driving the first transmission wheel 43. When the fourth transmission wheel 47 rotates, it will drive the third transmission wheel 81 through the second transmission belt 82. The third transmission wheel 81 provides a power source for the vane oil pump 8. After pulling down the oil pump control lever next to the speed control lever 51, the vane oil pump 8 can provide high-pressure liquid to the lifting cylinder 36. When the lifting cylinder 36 receives the high-pressure liquid, the piston rod inside it will continue to extend. At this time, the length of the entire lifting cylinder 36 will change. During this length change process, one end of the lifting cylinder 36 rotates relative to the second articulated support block 22, and the other end rotates relative to the first articulated support block 341, so that the piston rod can push the first support The support column 34 changes its position. When the position of the first support column 34 changes, one end of each first lifting support plate 31 rotates relative to one side of the installation groove 21, and the angle of each first lifting support plate 31 relative to the surface of the frame body 2 changes. Similarly, one end of each second lifting support plate 32 also rotates relative to the other side of the installation groove 21, and the angle of one end of each second lifting support plate 32 relative to the surface of the frame body 2 also changes. The hinge shaft 33 in the middle of the first lifting support plate 31 and the second lifting support plate 32 plays a supporting and guiding role. Then the other ends of the first lifting support plate 31 and the second lifting support plate 32 will rotate relative to the bottom of the lifting platform 37, thereby continuously pushing the height of the lifting platform 37 to change. When encountering loading and unloading heavy objects, the entire limiting support column 72 can be pulled out, and then the limiting support plate 71 is rotated. During the rotation process, one end of the limiting support plate 71 rotates relative to the second support column 35. After rotating to a suitable angle, the circular area 721 on the limiting support column 72 is again stuck in the other end of the limiting support plate 71 and the rectangular area 722 is stuck in the inside of the limiting groove 77. Since there are a large number of limiting grooves 77, a suitable position can be found for metal carriages 6 at different heights. At this time, when the lifting cylinder body 36 fails, the entire limiting support column 72 will slide outward with the second support plate 75, and the second support plate 75 will also drive the first support plate 74 to slide outward, so that the first support plate 74 will continuously squeeze the damper 73 and slowly stop, and the limiting support plate 71 can resist the second support column 35. After the second support column 35 is stuck, the entire lifting mechanism 3 cannot continue to descend. Using this structure, first, when the entire lifting cylinder body 36 fails, the height of the lifting mechanism 3 will not change too much, thereby achieving locking in an emergency.

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A crawler transport vehicle for agriculture, comprising a plurality of crawler running mechanisms (1), a frame body (2) arranged between the crawler running mechanisms (1), characterized in that: The surface of the vehicle frame body (2) is provided with a driving mechanism (4) which is transmission-connected to the crawler-type walking mechanism (1) and a lifting mechanism (3) which can achieve lifting and lowering; the surface of the vehicle frame body (2) is provided with a control mechanism (5) on the side close to the driving mechanism (4); a limiting mechanism (7) which limits the descent of the lifting mechanism (3) is also provided between the lifting mechanism (3) and the vehicle frame body (2); and the surface of the lifting mechanism (3) is provided with a metal carriage (6).

2. The crawler transport vehicle for agriculture according to claim 1, characterized in that: The crawler-type walking mechanism (1) comprises a roller support frame (11), a driving roller (13), a driven roller (12) and a crawler track (14); the surface of the roller support frame (11) is fixedly connected to the bottom of the frame body (2); a plurality of driven rollers (12) are rotatably provided inside the roller support frame (11); driving rollers (13) are provided at both ends of the roller support frame (11); at least one driving roller (13) is transmission-connected to the driving mechanism (4); at least one driving roller (13) is rotatably connected to the end of the roller support frame (11); and crawlers (14) are provided on the surfaces of the driving roller (13) and the driven roller (12).

3. The crawler transport vehicle for agriculture according to claim 2, characterized in that: The driving mechanism (4) comprises an engine (41), a gearbox (42), a first transmission wheel (43), a second transmission wheel (44) and a transmission shaft (45); the engine (41) is arranged on the surface of the frame body (2); the gearbox (42) is arranged at the bottom of the frame body (2); transmission shafts (45) are arranged on both sides of the gearbox (42); the end of the engine (41) is connected to the first transmission wheel (43); the end of the power input shaft of the gearbox (42) is connected to the second transmission wheel (44); the first transmission wheel (43) and the second transmission wheel (44) are connected via a first transmission belt (46); and the transmission shaft (45) is connected to the inside of the driving roller (13).

4. The crawler transport vehicle for agriculture according to claim 3, characterized in that: The control mechanism (5) comprises a speed control lever (51) and a hand support bracket (52), wherein the hand support bracket (52) is arranged on both sides of the surface of the frame body (2), and the speed control lever (51) is used to adjust the speed gear position of the gearbox (42).

5. The crawler transport vehicle for agriculture according to claim 3, characterized in that: The lifting mechanism (3) comprises a first lifting support plate (31), a second lifting support plate (32), a hinge shaft (33), a lifting cylinder (36) and a lifting platform (37); a mounting groove (21) is provided on the surface of the frame body (2); one end of a plurality of first lifting support plates (31) is hinged to one side of the mounting groove (21); one end of a plurality of second lifting support plates (32) is hinged to the other side of the mounting groove (21); the middle parts of the first lifting support plate (31) and the second lifting support plate (32) are hingedly connected via the hinge shaft (33); the other ends of the first lifting support plate (31) and the second lifting support plate (32) are hinged to the inside of the lifting platform (37); a first support column (34) and a second support column (35) are provided between the first lifting support plate (31) and the second lifting support plate (32); a lifting cylinder (36) is hingedly connected between the first support column (34) and the second support column (35); and the metal carriage (6) is arranged on the surface of the lifting platform (37).

6. The crawler transport vehicle for agriculture according to claim 5, characterized in that: A first hinged support block (341) is provided on one side of the first support column (34), a second hinged support block (22) is provided on one side of the bottom of the frame body (2), and a telescopic end of the lifting cylinder (36) is hinged to the inside of the first hinged support block (341), and the other end is hinged to the inside of the second hinged support block (22).

7. The crawler transport vehicle for agriculture according to claim 6, characterized in that: The lifting cylinder (36) is a hydraulic cylinder. The surface of the frame body (2) is also provided with a vane oil pump (8) for supplying high-pressure liquid to the hydraulic cylinder. A third transmission wheel (81) is provided at the power input end of the vane oil pump (8). A fourth transmission wheel (47) is provided on the driving mechanism (4). The third transmission wheel (81) and the fourth transmission wheel (47) are connected via a second transmission belt (82).

8. The crawler transport vehicle for agriculture according to claim 5, characterized in that: The limiting mechanism (7) comprises a limiting support plate (71), a limiting support column (72), a damper (73), a first support plate (74), a second support plate (75) and a limiting convex plate (76); one end of the limiting support plate (71) is hingedly connected to the second support column (35); the other end of the limiting support plate (71) is hingedly connected to the limiting support column (72); the damper (73) is arranged at the bottom of one side of the frame body (2); the end of the piston rod of the damper (73) is connected to the first support plate (74); the surface of the first support plate (74) is provided with a second support plate (75); the second support plate (75) is parallel to the surface of the frame body (2); the surface of the second support plate (75) is provided with a plurality of limiting convex plates (76); the gap between adjacent limiting convex plates (76) is a limiting groove (77); the limiting support column (72) can be stuck in the inside of the limiting groove (77).

9. The crawler transport vehicle for agriculture according to claim 8, characterized in that: The limiting support column (72) comprises a circular area (721) and a rectangular area (722); the circular area (721) is hingedly connected to the end of the limiting support plate (71); the rectangular area (722) can be stuck inside the limiting groove (77); a box boss (61) is provided at the bottom of the metal carriage (6); a rectangular through hole (62) is provided inside the box boss (61).

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