Hilly and mountain agricultural machine bowing chassis with high balance performance

Abstract

The invention relates to the technical field of agricultural equipment, in particular to a hilly and mountain agricultural equipment bowing chassis with high balance performance, which comprises a front end device, a rear end part is rotatably mounted at the rear end of the front end device, a driving system is fixedly mounted at the top end of the front end device, and the front end device comprises a front frame and a positioning pin. The positioning pin is fixedly installed at the rear end of the front frame, the rear end component comprises a connecting device, a supporting device and balancing devices, the connecting device is rotationally installed at the front end of the supporting device, the balancing devices are symmetrically and fixedly installed at the front end of the top of the supporting device, and the connecting device comprises a connecting base, a supporting transverse frame, a supporting shaft and a first gear; the supporting shaft is rotationally installed in the center of the interior of the supporting transverse frame, the first gear is fixedly installed in the center of the rear end of the supporting shaft, and the connecting base is fixedly installed in the center of the front end of the supporting shaft. Through the arrangement of the front end device and the rear end component, the purpose of carrying out auxiliary synchronous balance on the hillside bowing tractor is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery equipment, specifically to a waist - folding chassis for hilly and mountainous agricultural machinery equipment with high balance performance. Background Art

[0002] Mountain agricultural machinery equipment is agricultural machinery specifically designed for complex terrains such as mountains and hills, aiming to improve the production efficiency of mountain agriculture, reduce labor intensity, and adapt to the particularity of the terrain. Due to the complex terrain, large slopes, and scattered plots in the mountains, traditional plain agricultural machinery is difficult to apply. Therefore, mountain agricultural machinery equipment needs to be more adaptable, stable, and flexible in design.

[0003] The waist - folding chassis is a special vehicle chassis design mainly used for articulated vehicles (such as articulated trucks, articulated buses, articulated construction machinery, etc.). Its core feature is that there is a hinge point in the middle of the chassis, allowing the front and rear parts of the vehicle to bend relative to each other, thereby improving the flexibility and passability of the vehicle.

[0004] Currently, when the mountain waist - folding tractor on the market is in use, since the chassis of the mountain waist - folding tractor adopts an integral design, when a wheel passes through a raised area, the front - end chassis will tilt to the side end, and there is a lack of components for synchronous balance inside the mountain waist - folding tractor. Therefore, an equipment is needed to improve the above problems. Summary of the Invention

[0005] Aiming at the problems in the prior art, the present invention provides a waist - folding chassis for hilly and mountainous agricultural machinery equipment with high balance performance.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a waist - folding chassis for hilly and mountainous agricultural machinery equipment with high balance performance, including a front - end device. A rear - end component is rotatably installed at the rear end of the front - end device, and a drive system is fixedly installed at the top of the front - end device. The front - end device includes a front frame and a positioning pin, and the positioning pin is fixedly installed at the rear end of the front frame. The rear - end component includes a connecting device, a supporting device, and a balancing device. The connecting device is rotatably installed at the front end of the supporting device, and the balancing device is symmetrically fixedly installed at the front end of the top of the supporting device. The connecting device includes a connecting base, a supporting cross - frame, a supporting shaft, and a first gear. The supporting shaft is rotatably installed at the center inside the supporting cross - frame, the first gear is fixedly installed at the center of the rear end of the supporting shaft, and the connecting base is fixedly installed at the center of the front end of the supporting shaft.

[0007] Specifically, the support device includes a rear frame, a connecting top frame, reinforcing rib plates, a connecting bottom frame, a hydraulic damper, a first rack, a counterweight, a movable bracket, a transverse bracket, and a second rack. The connecting bottom frame is symmetrically and fixedly installed at the front end of the bottom of the rear frame. The reinforcing rib plates are symmetrically and fixedly installed at the top of the connecting bottom frame. The hydraulic damper is fixedly installed on the side end of the connecting bottom frame away from the reinforcing rib plates. The connecting top frame is fixedly installed at the top of the hydraulic damper. The first rack is fixedly installed on the side end of the connecting top frame facing away from the rear frame. The transverse brackets are symmetrically and fixedly installed inside the connecting top frame. The movable bracket is slidably sleeved on the outer circle of the transverse bracket. The counterweight is fixedly installed between the two movable brackets. The second rack is fixedly installed between the two counterweights.

[0008] Specifically, the balancing device includes a vertical sliding frame, a second gear, a lower edge bracket, a third gear, a first fitting bracket, a return spring, a second fitting bracket, an auxiliary wheel, a connecting shaft, a hexagonal rod, a third rack, a vertical rod, and a connecting front frame. The lower edge bracket is fixedly installed at the top of the connecting front frame. The second gear and the third gear are rotatably installed at the bottom end inside the lower edge bracket. The vertical rods are symmetrically and fixedly installed inside the lower edge bracket away from the second gear. The vertical sliding frame is slidably sleeved on the vertical rods. The third rack is fixedly installed at one end of the vertical sliding frame away from the connecting front frame. The first fitting bracket is fixedly installed on the side end of the third rack facing away from the second gear. The hexagonal rod is slidably inserted into the top end inside the first fitting bracket. The second fitting bracket is fixedly installed at the bottom end of the hexagonal rod. The return spring is fixedly installed between the second fitting bracket and the first fitting bracket, and the return spring is located on the outer circle of the hexagonal rod. The connecting shaft is rotatably installed on the side end of the second fitting bracket facing away from the first fitting bracket. The auxiliary wheel is fixedly installed at one end of the connecting shaft away from the first fitting bracket.

[0009] Specifically, the positioning pin is rotatably installed inside the connecting base away from the first gear. The drive system is fixedly installed at the top of the front frame. The support shaft is rotatably installed at the center of the front end of the rear frame.

[0010] Specifically, the bottom ends of both ends of the support cross frame are in contact with the top of the connecting top frame. The second rack meshes with the first gear. The first rack meshes with the second gear. The second gear meshes with the third gear. The third gear meshes with the third rack. One end of the connecting front frame away from the third rack is connected to the front end of the top of the rear frame.

[0011] Specifically, the reinforcing rib plates are fixedly installed between the connecting bottom frame and the rear frame. The piston rod at the top end inside the hydraulic damper is connected to the bottom end of the connecting top frame.

[0012] Specifically, a circular hole is provided at the inner front end of the connecting base, the transmission ratio of the second gear to the third gear is 1:10, a hexagonal hole is provided inside the top end of the first matching bracket, wheels are installed on both sides of the front frame and the rear frame, and the auxiliary wheel is located between the wheels of the front frame and the rear frame.

[0013] Specifically, the bottom end of the auxiliary wheel is 20 cm away from the bottom end of the wheel, a support hole is opened in the front center of the rear frame, and the side end of the first rack away from the top frame is aligned with the side end of the second gear away from the third gear.

[0014] Specifically, the side end of the third gear away from the second gear is aligned with the side end of the third rack away from the auxiliary wheel, extension brackets are fixedly installed at both ends of the second rack, and the counterweight block is connected to the extension.

[0015] Specifically, the front frame further includes a front protective frame and a protective bottom plate, the front protective frame is fixedly mounted at the front end of the front frame, and the protective bottom plate is fixedly mounted at the bottom front end of the front frame.

[0016] Beneficial effects of the present invention:

[0017] When the present invention is in use, the support shaft can rotate inside the rear frame, so that the front frame can be allowed to tilt when passing through a raised ground, thereby avoiding bending between the front frame and the connecting top frame. At the same time, when the first gear rotates, the counterweight block can be driven to adjust its displacement inside the connecting top frame, thereby adjusting the overall center position of the device. At the same time, when the front frame is tilted, the first rack can be driven to move downward, so that the second gear can drive the third rack to move downward through the third gear, causing the auxiliary wheel to contact the ground, thereby auxiliary supporting the frame located in the inclined area, avoiding the device from tipping over or seriously tilting when passing through some raised ground, and completing the work of assisting the balance of the device during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the present invention from the front perspective;

[0020] Figure 2 A schematic diagram of the front-end device of the present invention from a front perspective perspective;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the rear end component of the present invention from a front perspective;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting device of the present invention from the front perspective;

[0023] Figure 5 Schematic diagram of the three - dimensional structure of the front view of the support device in the present invention;

[0024] Figure 6 Schematic diagram of the three - dimensional structure of the rear view of the support device in the present invention;

[0025] Figure 7 Partial sectional view of the balance device in the present invention;

[0026] Figure 8 Schematic diagram of the three - dimensional structure of the front view of the second embodiment of the front frame in the present invention.

[0027] In the figure: 1 - front end device, 2 - rear end component, 3 - drive system, 4 - front frame, 5 - positioning pin, 6 - connecting device, 7 - support device, 8 - balance device, 9 - connecting base, 10 - support cross - frame, 11 - support shaft, 12 - first gear, 13 - rear frame, 14 - connecting top - frame, 15 - reinforcing rib plate, 16 - connecting bottom - frame, 17 - hydraulic damper, 18 - first rack, 19 - counterweight, 20 - movable bracket, 21 - cross - bracket, 22 - second rack, 23 - vertical sliding frame, 24 - second gear, 25 - lower edge bracket, 26 - third gear, 27 - first mating bracket, 28 - return spring, 29 - second mating bracket, 30 - auxiliary wheel, 31 - connecting shaft, 32 - hexagonal rod, 33 - third rack, 34 - vertical rod, 35 - connecting front - frame, 36 - front protective frame, 37 - protective bottom - plate. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] Embodiment 1

[0031] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in the figure, the folding chassis of the hilly and mountain agricultural machinery equipment with high balance performance according to the present invention includes a front-end device 1. A rear-end component 2 is rotatably installed at the rear end of the front-end device 1. A drive system 3 is fixedly installed at the top end of the front-end device 1. The front-end device 1 includes a front frame 4 and a positioning pin 5. The positioning pin 5 is fixedly installed at the rear end of the front frame 4. The rear-end component 2 includes a connecting device 6, a supporting device 7, and a balancing device 8. The connecting device 6 is rotatably installed at the front end of the supporting device 7. The balancing device 8 is symmetrically fixedly installed at the front end of the top of the supporting device 7. The connecting device 6 includes a connecting base 9, a supporting cross-frame 10, a supporting shaft 11, and a first gear 12. The supporting shaft 11 is rotatably installed at the inner center of the supporting cross-frame 10. The first gear 12 is fixedly installed at the center of the rear end of the supporting shaft 11. The connecting base 9 is fixedly installed at the center of the front end of the supporting shaft 11.

[0032] As Figure 5 and Figure 6 , the supporting device 7 includes a rear frame 13, a connecting top frame 14, reinforcing rib plates 15, a connecting bottom frame 16, a hydraulic damper 17, a first rack 18, a counterweight 19, a movable bracket 20, a cross bracket 21, and a second rack 22. The connecting bottom frame 16 is symmetrically fixedly installed at the front end of the bottom of the rear frame 13. The reinforcing rib plates 15 are symmetrically fixedly installed at the top end of the connecting bottom frame 16. The hydraulic damper 17 is fixedly installed on the side end of the connecting bottom frame 16 away from the reinforcing rib plates 15. The connecting top frame 14 is fixedly installed at the top end of the hydraulic damper 17. The first rack 18 is fixedly installed on the side end of the connecting top frame 14 facing away from the rear frame 13. The cross brackets 21 are symmetrically fixedly installed inside the connecting top frame 14. The movable bracket 20 is slidably sleeved on the outer circle of the cross brackets 21. The counterweight 19 is fixedly installed between the two movable brackets 20. The second rack 22 is fixedly installed between the two counterweights 19. Other external counterweights can be installed through the bottom end of the rear frame 13, so as to ensure the stability of the rear frame 13 during movement. At the same time, when the counterweight 19 is displaced, it only temporarily changes the center of gravity area of the rear frame 13, facilitating the overall movement of the device through complex road surfaces.

[0033] As Figure 7, the balancing device 8 includes a vertical carriage 23, a second gear 24, a lower edge bracket 25, a third gear 26, a first mating bracket 27, a return spring 28, a second mating bracket 29, an auxiliary wheel 30, a connecting shaft 31, a hexagonal rod 32, a third rack 33, a vertical rod 34 and a connecting front frame 35. The lower edge bracket 25 is fixedly installed at the top of the connecting front frame 35. The second gear 24 and the third gear 26 are rotatably installed at the inner bottom end of the lower edge bracket 25. The vertical rods 34 are symmetrically and fixedly installed inside the lower edge bracket 25 away from the second gear 24. The vertical carriage 23 is slidably sleeved on the vertical rods 34. The third rack 33 is fixedly installed at one end of the vertical carriage 23 away from the connecting front frame 35. The first mating bracket 27 is fixedly installed on the side end of the third rack 33 facing away from the second gear 24. The hexagonal rod 32 is slidably inserted into the inner top of the first mating bracket 27. The second mating bracket 29 is fixedly installed at the bottom end of the hexagonal rod 32. The return spring 28 is fixedly installed between the second mating bracket 29 and the first mating bracket 27, and the return spring 28 is located outside the hexagonal rod 32. The connecting shaft 31 is rotatably installed at the side end of the second mating bracket 29 facing away from the first mating bracket 27. The auxiliary wheel 30 is fixedly installed at one end of the connecting shaft 31 away from the first mating bracket 27. By the displacement of the hexagonal rod 32 in the hexagonal hole inside the top of the first mating bracket 27, it can ensure that the second mating bracket 29 moves up and down linearly. At the same time, due to the different transmission ratios between the second gear 24 and the third gear 26, a small downward movement of the first rack 18 can drive the auxiliary wheel 30 to move downward a large distance. Therefore, as long as the supporting cross-frame 10 tilts at a small angle, it can drive the auxiliary wheel 30 to move downward a large distance, facilitating the contact of the auxiliary wheel 30 with the ground.

[0034] The positioning pin 5 is rotatably installed inside the connection base 9 away from the first gear 12. The drive system 3 is fixedly installed at the top end of the front frame 4. The support shaft 11 is rotatably installed at the front center of the rear frame 13. The bottom ends of both ends of the support cross-frame 10 are in contact with the top end of the connection top frame 14. The second rack 22 meshes with the first gear 12. The first rack 18 meshes with the second gear 24. The second gear 24 meshes with the third gear 26. The third gear 26 meshes with the third rack 33. One end of the connection front frame 35 away from the third rack 33 is connected to the front end of the top of the rear frame 13. The reinforcing rib plate 15 is fixedly installed between the connection bottom frame 16 and the rear frame 13. The piston rod at the inner top end of the hydraulic damper 17 is connected to the bottom end of the connection top frame 14. A round hole is opened at the front end inside the connection base 9. The transmission ratio of the second gear 24 to the third gear 26 is 1:10. A hexagonal hole is opened at the inner top end of the first fitting bracket 27. Wheels are installed on both sides of the front frame 4 and the rear frame 13, and the auxiliary wheel 30 is located between the wheels of the front frame 4 and the rear frame 13. The distance between the bottom end of the auxiliary wheel 30 and the bottom end of the wheel is 20 cm. A support hole is opened at the front center of the rear frame 13. The side end of the first rack 18 facing away from the connection top frame 14 is aligned with the side end of the second gear 24 facing away from the third gear 26. The side end of the third gear 26 facing away from the second gear 24 is aligned with the side end of the third rack 33 facing away from the auxiliary wheel 30. Extension brackets are fixedly installed at both ends of the second rack 22, and a counterweight 19 is connected to the extension.

[0035] The working principle of Embodiment 1 is as follows: When in use, other components of the tractor can be installed on the front frame 4 and the rear frame 13. When the drive system 3 is running, it can drive the whole device to move. When the device moves to some relatively convex ground, when a wheel on the front frame 4 moves to the convex ground, it is installed inside the connecting base 9 through the positioning pin 5, and the connecting base 9 is installed at the front end of the support shaft 11. Therefore, by rotatably installing the support shaft 11 inside the rear frame 13, the front frame 4 can be supported to rotate, facilitating a wheel of the front frame 4 to pass over the convex ground. At the same time, when the support shaft 11 rotates, it can also drive the first gear 12 to rotate. When the first gear 12 rotates, it can drive the second rack 22 to displace towards the end inclined away from the front frame 4. Thus, the second rack 22 can drive the two counterweight blocks 19 to displace simultaneously, and the center of gravity position of the counterweight blocks 19 can be adjusted to avoid the phenomenon of the rear frame 13 tipping over when driving onto the convex ground. At the same time, when the front frame 4 is inclined, it can also drive the support cross frame 10 to rotate simultaneously. When the support cross frame 10 rotates, it can contact the top end of the connecting top frame 14. Therefore, when the front frame 4 inclines to one side, the support cross frame 10 can squeeze the connecting top frame 14 near the inclined side. Thus, the connecting top frame 14 can drive the first rack 18 to move downward. When the first rack 18 moves downward, it can drive the second gear 24 to rotate. When the second gear 24 rotates, it can drive the third gear 26 to rotate. Therefore, when the third gear 26 rotates, it can drive the third rack 33 to move downward. When the third rack 33 moves downward, it can drive the auxiliary wheel 30 to move downward simultaneously to contact the ground. Thus, the auxiliary wheel 30 can contact the ground on the inclined side to assist in supporting the device. And, through the setting of the return spring 28, the auxiliary wheel 30 is allowed to pass over a relatively small convex area. When the device travels through the convex area, through the setting of the return spring 28, it can drive the auxiliary wheel 30 to move downward and reset. And, by the hexagonal rod 32 sliding inside the first fitting bracket 27, it can ensure that the auxiliary wheel 30 moves up and down in a straight line. Subsequently, when the wheels on the front frame 4 and the rear frame 13 travel to a flat area, the front frame 4 can drive the support cross frame 10, the support shaft 11, and the first gear 12 to rotate back to the reset position, causing the first gear 12 to drive the second rack 22 to displace simultaneously to the center position inside the rear frame 13. Thus, the two counterweight blocks 19 can synchronously displace to the central area of the rear frame 13. When the counterweight blocks 19 are reset, the center of gravity point of the device is moved to the center of the rear frame 13. At the same time, when the front frame 4 is reset, the support cross frame 10 can return to the horizontal state. At this time, the connecting top frame 14 will lose the extrusion of the support cross frame 10. Thus, the spring inside the hydraulic damper 17 will drive the first rack 18 to move upward and reset. Thus, the first rack 18 can drive the second gear 24 and the third gear 26 to rotate synchronously in the reverse direction, causing the third rack 33 to move upward. And when the third rack 33 moves upward, it can drive the auxiliary wheel 30 to move upward simultaneously.It enables the auxiliary wheel 30 to be easily disengaged from the ground, completing the work of the device when driving through a raised area. When the device is in use, when the third rack 33 is displaced, it can slide on the outer ring of the vertical rod 34 through the vertical carriage 23, ensuring that the third rack 33 moves linearly up and down, improving the docking accuracy between the third rack 33 and the third gear 26. When the device is in use, the front frame 4 and the rear frame 13 are arranged in a segmented manner. When the front frame 4 and the rear frame 13 drive onto a raised road surface, the support shaft 11 can rotate inside the rear frame 13, avoiding the phenomenon that the positioning pin 5 is excessively bent inside the connection base 9 and improving the smoothness of the front frame 4 passing through the raised area. Moreover, when the front frame 4 is tilted, the support cross-frame 10 can squeeze the connection top-frame 14 to drive the entire auxiliary wheel 30 to move downward, so that the auxiliary wheel 30 contacts the ground on the tilted side, enabling auxiliary support in the tilted area of the device and improving the stability of the device when driving through a raised road surface.

[0036] Embodiment 2

[0037] Based on Embodiment 1, as Figure 8 shown, the front frame 4 further includes a front protective frame 36 and a protective bottom plate 37. The front protective frame 36 is fixedly installed at the front end of the front frame 4, and the protective bottom plate 37 is fixedly installed at the front bottom end of the front frame 4.

[0038] When implementing this embodiment, since the front protective frame 36 is located at the front end of the front frame 4, it can form a protection at the front end of the front frame 4, preventing the front frame 4 from directly hitting external objects. At the same time, since the protective bottom plate 37 is located at the front bottom end of the front frame 4, it can avoid excessive friction between external objects and the bottom end of the front frame 4, thereby improving the service life of the front frame 4 and completing the work.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-balance performance folding chassis for hilly and mountainous agricultural machinery, comprising a front end device (1), a rear end component (2) being rotatably mounted at the rear end of the front end device (1), and a drive system (3) being fixedly mounted at the top end of the front end device (1), characterized in that: The front end device (1) comprises a front frame (4) and a positioning pin (5), wherein the positioning pin (5) is fixedly mounted at the rear end of the front frame (4); the rear end component (2) comprises a connecting device (6), a supporting device (7) and a balancing device (8), wherein the connecting device (6) is rotatably mounted at the front end of the supporting device (7), and the balancing device (8) is symmetrically fixedly mounted at the top front end of the supporting device (7); the connecting device (6) comprises a connecting base (9), a supporting cross frame (10), a supporting shaft (11) and a first gear (12), wherein the supporting shaft (11) is rotatably mounted at the inner center of the supporting cross frame (10), the first gear (12) is fixedly mounted at the rear end center of the supporting shaft (11), and the connecting base (9) is fixedly mounted at the front end center of the supporting shaft (11).

2. The high-balance performance folding chassis for hilly and mountainous agricultural machinery according to claim 1 is characterized by: The support device (7) comprises a rear frame (13), a connecting top frame (14), a reinforcing rib plate (15), a connecting bottom frame (16), a hydraulic damper (17), a first rack (18), a counterweight (19), a movable bracket (20), a transverse bracket (21) and a second rack (22); the connecting bottom frame (16) is symmetrically fixedly mounted at the bottom front end of the rear frame (13); the reinforcing rib plate (15) is symmetrically fixedly mounted at the top end of the connecting bottom frame (16); the hydraulic damper (17) is fixedly mounted at the connecting bottom frame (16) away from the reinforcing rib plate The connecting top frame (14) is fixedly mounted on the side end of the plate (15), the connecting top frame (14) is fixedly mounted on the top end of the hydraulic damper (17), the first rack (18) is fixedly mounted on the side end of the connecting top frame (14) away from the rear frame (13), the cross bracket (21) is symmetrically fixedly mounted inside the connecting top frame (14), the movable bracket (20) is slidably sleeved on the outer ring of the cross bracket (21), the counterweight (19) is fixedly mounted between the two movable brackets (20), and the second rack (22) is fixedly mounted between the two counterweights (19).

3. The high-balance performance folding chassis for hilly and mountainous agricultural machinery according to claim 2 is characterized by: The balancing device (8) comprises a vertical slide (23), a second gear (24), a lower bracket (25), a third gear (26), a first matching bracket (27), a return spring (28), a second matching bracket (29), an auxiliary wheel (30), a connecting shaft (31), a hexagonal rod (32), a third rack (33), a vertical rod (34) and a connecting front frame (35); the lower bracket (25) is fixedly mounted on the top of the connecting front frame (35); the second gear (24) and the third gear (26) are rotatably mounted on the inner bottom end of the lower bracket (25); the vertical rod (34) is symmetrically fixedly mounted inside the lower bracket (25) away from the second gear (24); the vertical slide (23) is slidably sleeved on the vertical rod (34); the third rack (33) is fixedly mounted on the lower bracket (25) and ... The first matching bracket (27) is fixedly mounted on the side end of the third rack (33) away from the second gear (24), the hexagonal rod (32) is slidably inserted into the top of the first matching bracket (27), the second matching bracket (29) is fixedly mounted on the bottom end of the hexagonal rod (32), the return spring (28) is fixedly mounted between the second matching bracket (29) and the first matching bracket (27), and the return spring (28) is located on the outer ring of the hexagonal rod (32), the connecting shaft (31) is rotatably mounted on the side end of the second matching bracket (29) away from the first matching bracket (27), and the auxiliary wheel (30) is fixedly mounted on the end of the connecting shaft (31) away from the first matching bracket (27).

4. The high-balance performance folding chassis for hilly and mountainous agricultural machinery according to claim 3 is characterized by: The positioning pin (5) is rotatably mounted inside the connection base (9) away from the first gear (12), the driving system (3) is fixedly mounted on the top of the front frame (4), and the support shaft (11) is rotatably mounted at the front end center of the rear frame (13).

5. The high-balance performance folding chassis for hilly and mountainous agricultural machinery according to claim 4 is characterized by: The bottoms of both ends of the supporting cross frame (10) are fitted with the top of the connecting top frame (14); the second rack (22) is meshed with the first gear (12); the first rack (18) is meshed with the second gear (24); the second gear (24) is meshed with the third gear (26); the third gear (26) is meshed with the third rack (33); and one end of the connecting front frame (35) away from the third rack (33) is connected to the top front end of the rear frame (13).

6. The high-balance performance folding chassis for hilly and mountainous agricultural machinery according to claim 5 is characterized by: The reinforcing rib plate (15) is fixedly installed between the connecting bottom frame (16) and the rear frame (13), and the piston rod at the top end inside the hydraulic damper (17) is connected to the bottom end of the connecting top frame (14).

7. The high-balance performance folding chassis for hilly and mountainous agricultural machinery according to claim 6 is characterized by: A circular hole is provided at the front end of the connection base (9); the transmission ratio of the second gear (24) to the third gear (26) is 1:10; a hexagonal hole is provided at the top of the first matching bracket (27); wheels are installed on both sides of the front frame (4) and the rear frame (13); and the auxiliary wheel (30) is located between the wheels of the front frame (4) and the rear frame (13).

8. The high-balance performance folding chassis for hilly and mountainous agricultural machinery according to claim 7 is characterized by: The bottom end of the auxiliary wheel (30) is spaced 20 centimeters from the bottom end of the wheel, a support hole is provided at the front center of the rear frame (13), and the side end of the first rack (18) away from the top frame (14) is aligned with the side end of the second gear (24) away from the third gear (26).

9. The high-balance performance folding chassis for hilly and mountainous agricultural machinery according to claim 8 is characterized by: The side end of the third gear (26) facing away from the second gear (24) is aligned with the side end of the third rack (33) facing away from the auxiliary wheel (30), and extension brackets are fixedly installed at both ends of the second rack (22), and the counterweight block (19) is connected to the extension.

10. The high-balance performance folding chassis for hilly and mountainous agricultural machinery according to claim 9, characterized in that: The front frame (4) further comprises a front protective frame (36) and a protective bottom plate (37); the front protective frame (36) is fixedly mounted on the front end of the front frame (4); and the protective bottom plate (37) is fixedly mounted on the front end of the bottom of the front frame (4).

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