Chassis and tractor
By designing a chassis structure that includes a main gearbox, a front steering axle, a rear steering axle, connecting rods, and connecting plates, the problem of small steering angle and large turning radius of tractors was solved, achieving a larger steering angle and a smaller turning radius, thus improving traffic efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGSHA SUNLIGHT AGRI MACHINERY FACILITIES
- Filing Date
- 2022-12-28
- Publication Date
- 2026-06-05
AI Technical Summary
When existing tractors turn, the front and rear wheels cannot turn synchronously, resulting in a small turning angle, a large turning radius, and low traffic efficiency.
Design a chassis structure including a main gearbox, a front steering axle, a rear steering axle, connecting rods, and connecting plates. Through the combination of crank arms and hinge points, the front and rear steering axles can rotate in tandem, increasing the steering angle and reducing the turning radius.
It achieves a larger steering angle and a smaller turning radius, improving the tractor's passability and traffic efficiency.
Smart Images
Figure CN116001912B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of agricultural machinery, and in particular to a chassis and tractor. Background Technology
[0002] In recent years, with the continuous development of agricultural planting technology, agricultural machinery of various structures, such as tractors, has been widely used in agricultural production activities, which has effectively improved planting efficiency.
[0003] In existing tractors, when turning, the front wheels steer in the intended direction, while the rear wheels cannot turn and can only follow. Therefore, they generally have a small steering angle and a large turning radius, resulting in relatively poor maneuverability and low traffic efficiency when traveling on rural roads or rough terrain.
[0004] In summary, how to provide a chassis with a large steering angle, small turning radius, high passability and traffic efficiency, as well as a tractor including this chassis, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention
[0005] The technical problem to be solved by the present invention is to provide a chassis with a large steering angle, a small turning radius, high passability and high traffic efficiency, and a tractor including the chassis.
[0006] The solution of this invention is implemented as follows: This invention proposes a chassis, including a main gearbox and a rear frame connected to the main gearbox. The main gearbox is provided with a front steering axle and a fixed bracket. A first crank arm is provided on one side of the front steering axle, and a second crank arm is provided on the other side of the front steering axle. The chassis also includes several connecting rods and several connecting plates. The connecting rods include a first connecting rod and a second connecting rod. The connecting plates include a first connecting plate and a second connecting plate. The first connecting plate is disposed on the fixed bracket, and the second connecting plate is disposed on the rear frame. One end of the first connecting rod is movably connected to the second crank arm, and the other end is movably connected to the first connecting plate. One end of the second connecting rod is movably connected to the first connecting plate, and the other end is movably connected to the second connecting plate. The rear frame is also provided with a rear steering axle. The connecting rods also include a fifth connecting rod and a sixth connecting rod. The rear steering axle is provided with a fourth crank arm. One end of the fourth crank arm is connected to one end of the sixth connecting rod, and one end of the fifth connecting rod is movably connected to the other end of the sixth connecting rod. One end of the second connecting plate is fixedly connected to the fifth connecting rod. When this chassis structure needs to turn, taking a left turn as an example, the first crank arm drives the front steering axle to turn to the left. The front steering axle transmits the steering force to the second crank arm, which in turn transmits it to the first connecting rod, the first connecting plate, and the second connecting rod. The second connecting rod then transmits it to the second connecting plate, which in turn transmits it to the fifth connecting rod. The fifth connecting rod then transmits it to the sixth connecting rod, which in turn transmits it to the fourth crank arm. The fourth crank arm then drives the rear steering axle to turn to the right, as shown in the diagram, where the front steering axle turns to the left and the rear steering axle turns to the right. Therefore, compared with existing chassis structures, it can achieve a larger steering angle and a smaller turning radius, effectively improving its passability and traffic efficiency.
[0007] Another technical solution of the present invention is that, based on the above, the connecting rod further includes a third connecting rod, and the front steering axle is also provided with a third crank arm that is disposed opposite to the first crank arm. The two ends of the third connecting rod are respectively movably connected to the first crank arm and the third crank arm.
[0008] Another technical solution of the present invention is that, based on the above, the connecting rod further includes a fourth connecting rod, one end of which is movably connected to the end of the fifth connecting rod opposite to the sixth connecting rod.
[0009] Another technical solution of the present invention is that, based on the above, a fifth crank arm is also provided on the rear steering axle, the fifth crank arm is arranged opposite to the fourth crank arm, and the other end of the fourth connecting rod is movably connected to the fifth crank arm.
[0010] Another technical solution of the present invention is that, based on the above, the chassis is provided with a front axle, one end of the front axle is provided with a first hinge portion, and the front steering axle is connected to the front axle through the first hinge portion.
[0011] Another technical solution of the present invention is that, based on the above, a rear axle is provided on the rear frame, a second hinge portion is provided at one end of the rear axle, and the rear steering axle is connected to the rear axle through the second hinge portion.
[0012] Another technical solution of the present invention is that, based on the above, the second connecting plate is a bent plate, the rear frame is provided with an eighth hinge point, the second connecting plate is placed on the eighth hinge point, and can rotate around the eighth hinge point.
[0013] Another technical solution of the present invention is that, based on the above, the chassis is provided with a third hinge point, a fourth hinge point and a fifth hinge point respectively, the second connecting plate is hinged to the fixed bracket through the third multi-connection point, one end of the first connecting rod is connected to the fifth hinge point, and one end of the second connecting rod is hinged to the fourth hinge point.
[0014] Another technical solution of the present invention is that, based on the above, the chassis further includes a sixth hinge point, a seventh hinge point, a ninth hinge point, a tenth hinge point, and an eleventh hinge point. One end of the sixth connecting rod is connected to the fourth crank arm through the sixth hinge point, and the other end is connected to one end of the fourth connecting rod through the seventh hinge point. One end of the fourth connecting rod is connected to the other end of the sixth connecting rod through the tenth hinge point, and the other end is connected to the fourth crank arm through the eleventh hinge point.
[0015] On the other hand, the present invention also proposes a tractor, including a chassis, said chassis being the chassis described above. Attached Figure Description
[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.
[0017] Figure 1 This is a schematic diagram of the structure of the chassis in a straight-line driving state according to the present invention;
[0018] Figure 2 for Figure 1 The diagram shows the chassis in the middle when making a left turn.
[0019] The correspondence between the reference numerals in the attached figures is as follows:
[0020] 1. Main gearbox; 11. Front steering axle; 111. First crank arm
[0021] 112 Second Crank Arm 113 Third Crank Arm
[0022] 12 Fixed bracket 121 First connecting plate
[0023] 2 rear frame 21 rear steering axle 22 front axle
[0024] 23 rear axle
[0025] 31 First connecting rod 32 Second connecting rod 33 Third connecting rod
[0026] 34 Fourth connecting rod 35 Second connecting plate 36 Fifth connecting rod
[0027] 37 Sixth connecting rod
[0028] 41 First hinge part; 42 Second hinge part; 43 Fourth crank arm
[0029] 44 Fifth crank arm; 45 Third hinge; 46 Fourth hinge
[0030] 51 First hinge point 52 Second hinge point 53 Third hinge point
[0031] 54 Fourth hinge point 55 Fifth hinge point 56 Sixth hinge point
[0032] 57 Seventh hinge point 58 Eighth hinge point 59 Ninth hinge point
[0033] 60 Tenth hinge point 61 Eleventh hinge point Detailed Implementation
[0034] The present invention will now be described in detail with reference to the accompanying drawings. This description is merely illustrative and explanatory, and should not be construed as limiting the scope of protection of the present invention. Furthermore, those skilled in the art can combine the features in the embodiments described herein and in different embodiments according to the description in this document.
[0035] The embodiments of the present invention are as follows, please refer to them. Figure 1 and Figure 2The chassis shown specifically includes a main gearbox 1 and a rear frame 2 connected to the main gearbox 1. The main gearbox 1 has a front steering axle 11 and a fixed bracket 12. One side of the front steering axle 11, as shown in the figure, has a first crank arm 111, and the other side of the front steering axle 11, as shown in the figure, has a second crank arm 112. The chassis also includes several connecting rods and several connecting plates. The connecting rods specifically include a first connecting rod 31 and a second connecting rod 32. Similarly, the connecting plates also include a first connecting plate 121 and a second connecting plate 35. The first connecting plate 121 is mounted on the fixed bracket 12, and the second connecting plate 35 is mounted on the rear frame 2. One end of the first connecting rod 31, as shown in the figure, is movably connected to the second crank arm 112, and the other end, as shown in the figure, is movably connected to the first connecting plate 121. One end of the second connecting rod 32, as shown in the figure, is movably connected to the first connecting plate 121, and the other end, as shown in the figure, is movably connected to the second connecting plate 35. The rear frame 2 is also equipped with a rear steering axle 21. The connecting rods include a fifth connecting rod 36 and a sixth connecting rod 37. The rear steering axle 21 is equipped with a fourth crank arm 43. One end of the fourth crank arm 43, i.e., the upper end shown in the figure, is connected to one end of the sixth connecting rod 37, i.e., the left end shown in the figure. One end of the fifth connecting rod 36, i.e., the left end shown in the figure, is movably connected to the other end of the sixth connecting rod 37, i.e., the right end shown in the figure. One end of the second connecting plate 35 is fixedly connected to the fifth connecting rod 36. When this chassis needs to turn, taking a left turn as an example, the first crank arm 111 drives the front steering axle 11 to turn to the left. The front steering axle 11 transmits the steering force to the second crank arm 112, which in turn transmits it to the first connecting rod 31, the first connecting plate 121, and the second connecting rod 32. The second connecting rod 32 transmits it to the second connecting plate 35, which in turn transmits it to the fifth connecting rod 36. The fifth connecting rod 36 transmits it to the sixth connecting rod 37, which in turn transmits it to the fourth crank arm 43. The fourth crank arm 43 then drives the rear steering axle 21 to turn to the right, as shown in the figure. The front steering axle 11 turns to the left, and the rear steering axle 21 turns to the right. Therefore, compared with existing chassis structures, it can achieve a larger steering angle and a smaller turning radius, and its passability and traffic efficiency can be effectively improved.
[0036] Based on the above embodiments, in another embodiment of the present invention, such as... Figure 1 and Figure 2 As shown, the connecting rod also includes a third connecting rod 33, and the front steering axle 11 is also provided with a third crank arm 113 opposite to the first crank arm 111. The two ends of the third connecting rod 33 are movably connected to the first crank arm 111 and the third crank arm 113, respectively. When the left front steering car turns, it drives the right front steering axle 11 to rotate together through the third connecting rod 33.
[0037] Based on the above embodiments, in another embodiment of the present invention, such as... Figure 1 and Figure 2 As shown, the connecting rod also includes a fourth connecting rod 34. One end of the fourth connecting rod 34, i.e., the left end shown in the figure, is movably connected to the end of the fifth connecting rod 36 that is opposite to the end of the sixth connecting rod 37, i.e., the right end shown in the figure. By setting the fourth connecting rod 34, the fifth connecting rod 36, and the sixth connecting rod 37 between the two rear steering axles 21, the simultaneous movement of the two rear steering axles 21 can be achieved.
[0038] Based on the above embodiments, in another embodiment of the present invention, such as... Figure 1 and Figure 2 As shown, a fifth crank arm 44 is also provided on the rear steering axle 21 on the right side. The fifth crank arm 44 is arranged opposite to the fourth crank arm 43. The other end of the fourth connecting rod 34, i.e. the right end shown in the figure, is movably connected to the fifth crank arm 44.
[0039] Based on the above embodiments, in another embodiment of the present invention, such as... Figure 1 and Figure 2 As shown, a front axle 22 is mounted on the chassis. One end of the front axle 22 has a first hinge portion 41. The front steering axle 11 is connected to the front axle 22 through the first hinge portion 41. When the front steering axle 11 rotates around the front axle 22, it can turn left and right. It should be noted that the structure of the right front steering axle 11 is the same as that of the left front steering axle 11.
[0040] Based on the above embodiments, in another embodiment of the present invention, such as... Figure 1 and Figure 2 As shown, a rear axle 23 is mounted on the rear frame 2. One end of the rear axle 23, i.e., the left end shown in the figure, is provided with a second hinge portion 42. The rear steering axle 21 is connected to the rear axle 23 through the second hinge portion 42. The working principle is the same as that of the front steering axle 11. Similarly, the structure of the right rear steering axle 21 is the same as that of the left rear steering axle 21.
[0041] Based on the above embodiments, in another embodiment of the present invention, such as... Figure 1 and Figure 2 As shown, the second connecting plate 35 is a bent plate, and the rear frame 2 is also provided with an eighth hinge point 58. The second connecting plate 35 is placed on the eighth hinge point 58 and can rotate around the eighth hinge point 58.
[0042] Based on the above embodiments, in another embodiment of the present invention, such as... Figure 1 and Figure 2As shown, the disk is provided with a third hinge point 53, a fourth hinge point 54 and a fifth hinge point 55 respectively. The second connecting plate 35 is hinged to the fixed bracket 12 through the third hinge point 53. One end of the first connecting rod 31, i.e. the lower end shown in the figure, is hinged to the fifth hinge point 55. One end of the second connecting rod 32, i.e. the upper end shown in the figure, is hinged to the fourth hinge point 54.
[0043] Based on the above embodiments, in another embodiment of the present invention, such as... Figure 1 and Figure 2 As shown, the chassis also includes a sixth hinge point 56, a seventh hinge point 57, a ninth hinge point 59, a tenth hinge point 60, and an eleventh hinge point 61. One end of the sixth connecting rod 37, i.e., the left end shown in the figure, is connected to the fourth crank arm 43 via the sixth hinge point 56. The other end of the sixth connecting rod 37, i.e., the right end shown in the figure, is connected to one end of the fourth connecting rod 34, i.e., the left end shown in the figure, via the tenth hinge point 60. The other end of the fourth connecting rod 34, i.e., the right end shown in the figure, is connected to the fourth crank arm 43 via the eleventh hinge point 61. In addition, the chassis also includes a third hinge part 45 and a fourth hinge part 46, as well as a first hinge point 51 and a second hinge point 52, etc.
[0044] When this chassis structure needs to turn, taking a left turn as an example, the first crank arm 111 drives the front steering axle 11 to rotate to the left. The front steering axle 11 transmits the steering force to the second crank arm 112, which in turn transmits it to the first connecting rod 31, the first connecting plate 121, and the second connecting rod 32. The second connecting rod 32 then transmits it to the second connecting plate 35, which in turn transmits it to the fifth connecting rod 36. The fifth connecting rod 36 then transmits it to the sixth connecting rod 37, which in turn transmits it to the fourth crank arm 43. The fourth crank arm 43 then drives the rear steering axle 21 to rotate to the right, as shown in the figure, where the front steering axle 11 rotates to the left and the rear steering axle 21 rotates to the right. Therefore, compared with existing chassis structures, it can achieve a larger steering angle and a smaller turning radius, effectively improving its passability and traffic efficiency.
[0045] In addition, the present invention also proposes a tractor, including a chassis, the chassis being the chassis described above.
[0046] Tractors with this structure have the advantages of large steering angle, small turning radius, high passability, and high traffic efficiency.
[0047] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A chassis, characterized in that, It includes a main gearbox and a rear frame connected to the main gearbox. The main gearbox is equipped with a front steering axle and a fixed bracket. A first crank arm is provided on one side of the front steering axle, and a second crank arm is provided on the other side of the front steering axle. The chassis also includes several connecting rods and several connecting plates. The connecting rods include a first connecting rod and a second connecting rod. The connecting plates include a first connecting plate and a second connecting plate. The first connecting plate is disposed on the fixed bracket, and the second connecting plate is disposed on the rear frame. One end of the first connecting rod is movably connected to the second crank arm, and the other end is movably connected to the first connecting plate. One end of the second connecting rod is movably connected to the first connecting plate, and the other end is movably connected to the second connecting plate; The rear frame is also provided with a rear steering axle, and the connecting rod includes a fifth connecting rod and a sixth connecting rod. The rear steering axle is provided with a fourth crank arm, one end of the fourth crank arm is connected to one end of the sixth connecting rod, and one end of the fifth connecting rod is movably connected to the other end of the sixth connecting rod. One end of the second connecting plate is fixedly connected to the fifth connecting rod.
2. The chassis according to claim 1, characterized in that, The connecting rod also includes a third connecting rod, and the front steering axle is also provided with a third crank arm that is disposed opposite to the first crank arm. The two ends of the third connecting rod are respectively movably connected to the first crank arm and the third crank arm.
3. The chassis according to claim 2, characterized in that, The connecting rod also includes a fourth connecting rod, one end of which is movably connected to the end of the fifth connecting rod that is opposite to the sixth connecting rod.
4. The chassis according to claim 3, characterized in that, The rear steering axle is also provided with a fifth crank arm, which is arranged opposite to the fourth crank arm, and the other end of the fourth connecting rod is movably connected to the fifth crank arm.
5. The chassis according to claim 4, characterized in that, The chassis is provided with a front axle, and one end of the front axle is provided with a first hinge portion. The front steering axle is connected to the front axle through the first hinge portion.
6. The chassis according to claim 5, characterized in that, The rear frame is provided with a rear axle, and one end of the rear axle is provided with a second hinge. The rear steering axle is connected to the rear axle through the second hinge.
7. The chassis according to claim 6, characterized in that, The second connecting plate is a bent plate, and the rear frame is provided with an eighth hinge point. The second connecting plate is placed on the eighth hinge point and can rotate around the eighth hinge point.
8. The chassis according to claim 7, characterized in that, The chassis is provided with a third hinge point, a fourth hinge point and a fifth hinge point respectively. The second connecting plate is hinged to the fixed bracket through the third hinge point. One end of the first connecting rod is hinged to the fifth hinge point and one end of the second connecting rod is hinged to the fourth hinge point.
9. The chassis according to claim 8, characterized in that, The chassis also includes a sixth hinge point, a seventh hinge point, a ninth hinge point, a tenth hinge point, and an eleventh hinge point. One end of the sixth connecting rod is connected to the fourth crank arm through the sixth hinge point, and the other end is connected to one end of the fourth connecting rod through the seventh hinge point. One end of the fourth connecting rod is connected to the other end of the sixth connecting rod through the tenth hinge point, and the other end is connected to the fourth crank arm through the eleventh hinge point.
10. A tractor, comprising a chassis, characterized in that, The chassis is the chassis described in any one of claims 1 to 9.