Tractor with front and rear axle steering

Abstract

The utility model provides a tractor with front and rear axle steering, and belongs to the technical field of tractors. Comprising a front axle assembly, a rear axle assembly, a front brake assembly and a rear brake assembly, the front axle assembly is fixedly connected with the rear axle assembly, a front rotating shaft is arranged between the front axle assembly and the front brake assembly, the front rotating shaft is used for rotating between the front brake assembly and the front axle assembly, and a rear rotating shaft is arranged between the rear axle assembly and the rear brake assembly. The rear rotating shaft is used for rotating between the rear axle assembly and the rear brake assembly, and mounting seats are fixed at the bottoms of the front axle assembly and the rear axle assembly. The connecting rod, the clamping groove, the clamping block and the fixing sleeve are arranged, the ball cup is fixed in the mode that the clamping block is clamped in the clamping groove, the opening of the clamping groove faces downwards, when replacement is needed, the ball cup is taken out downwards after the ball pin is detached, the ball cup which is not damaged does not need to be taken down, detachment is simpler, and replacement is more convenient. And only the damaged ball cup and the damaged ball pin need to be replaced, so that the replacement cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of tractors, in particular to a tractor with front and rear axle steering. Background Art

[0002] A tractor is a mechanized agricultural tool used to pull agricultural machinery or other vehicles. It usually has a powerful power system and strong tires, and can work under various terrain conditions. A tractor usually consists of a tractor body, a front axle assembly, a rear axle assembly, a front brake assembly, a rear brake assembly, and a rotating assembly. The front axle assembly and the front brake assembly and the rear axle assembly and the rear brake assembly can all rotate, and are powered by the rotating assembly. The rotating assembly consists of a mounting seat, a rotating cylinder, a left steering arm, a right steering arm, and a pull rod. The rotating cylinder drives the left steering arm to rotate, and the left steering arm drives the right steering arm to rotate through the pull rod. The two left steering arms and the right steering arms drive the front brake assembly and the rear brake assembly to rotate respectively, which plays a role in reducing the turning radius.

[0003] When the draw rod is in use, the ball pin position of the draw rod will be subjected to pulling force or pushing force, so the ball pin of the draw rod is easily damaged, and the main body position of the draw rod is not damaged. When replacing it, the entire draw rod needs to be replaced, causing waste and increasing costs. Therefore, the present application provides a tractor with front and rear axle steering to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a tractor with front and rear axle steering to solve the problem of high cost when the pull rod is replaced.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A tractor with front and rear axle steering comprises a tractor body, a front axle assembly, a rear axle assembly, a front brake assembly and a rear brake assembly are arranged at the bottom of the tractor body, the front axle assembly is fixedly connected to the rear axle assembly, a front rotating shaft is arranged between the front axle assembly and the front brake assembly, the front rotating shaft is used for the rotation between the front brake assembly and the front axle assembly, a rear rotating shaft is arranged between the rear axle assembly and the rear brake assembly, the rear rotating shaft is used for the rotation between the rear axle assembly and the rear brake assembly, a mounting seat is fixed at the bottom of the front axle assembly and the rear axle assembly, a rotating oil cylinder is installed on the mounting seat, a left steering arm and a right steering arm are fixed at the bottom of the front brake assembly and the rear brake assembly, and further comprises:

[0007] A split pull rod is used to connect a left steering arm and a right steering arm.

[0008] Preferably, the split pull rod includes a connecting rod, the circumferential surface of the connecting rod is provided with a groove at the end position, the inner wall of the groove is clamped with a clamping block, the circumferential surface of the connecting rod is movably sleeved with two fixing sleeves, the surfaces of the two fixing sleeves are provided with bolt 1 and bolt 2, the circumferential surface of the connecting rod is provided with a threaded hole 1 at a position corresponding to bolt 1, the circumferential surface of the clamping block is provided with a position corresponding to bolt 2, bolt 1 movably penetrates the fixing sleeve and is threadedly connected in threaded hole 1, bolt 2 movably penetrates the fixing sleeve and is threadedly connected in threaded hole 2, ball head seats are provided at the ends of the two clamping blocks, ball pins are rotatably connected to the inner walls of the two ball head seats, and the two ball pins are rotatably connected to the left steering arm and the right steering arm respectively.

[0009] Preferably, blocks are provided at the bottom of the two fixing sleeves.

[0010] Preferably, two sliding grooves are formed on the circumferential surface of the connecting rod, and sliding blocks are fixed to the inner walls of the two fixing sleeves, and the sliding blocks are slidably connected in the sliding grooves.

[0011] Preferably, the circumferential surface of the connecting rod is fixedly sleeved with a clamping ring at both ends, the bottom of the clamping block is fixedly connected with a clamping pad, the surface of the clamping ring is provided with a slope one, the surface of the clamping pad is provided with a slope two, and the inner wall of the fixed sleeve is provided with a slope three, the slope three is matched with the slope one, the slope three is matched with the slope two, and the slope two is matched with the slope three.

[0012] Preferably, the surface of the fixing sleeve is provided with a chamfer.

[0013] Preferably, the surface of the block is provided with a chamfer.

[0014] Preferably, the surface of the fixing sleeve is provided with anti-slip stripes.

[0015] Compared with the prior art, the utility model has at least the following beneficial effects:

[0016] In the above scheme, by setting a connecting rod, a slot, a block and a fixing sleeve, the ball head seat is fixed by the block being stuck in the slot, and the opening of the slot is downward. When replacement is required, the ball head pin is removed and the ball head seat is taken out downward. There is no need to remove the undamaged ball head seat, so disassembly and removal are simpler, and only the damaged ball head seat and ball head pin need to be replaced, and the replacement cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a structural schematic diagram of the rear axle assembly of the utility model;

[0020] Figure 3 This is a structural schematic diagram of the front axle assembly of the utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the split pull rod of the utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the fixed sleeve of the utility model;

[0023] Figure 6 This is a cross-sectional view of the ball stud of the utility model;

[0024] Figure 7 This is a cross-sectional view of the card slot of the utility model;

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the clamping block of the utility model;

[0026] Fig. 9 It is a structural schematic diagram of the card pad of the utility model.

[0027] [reference numerals]

[0028] 1. Front axle assembly; 2. Rear axle assembly; 3. Front brake assembly; 4. Rear brake assembly; 5. Front shaft; 6. Rear shaft; 7. Left steering arm; 8. Right steering arm; 9. Mounting seat; 10. Rotating cylinder; 11. Split tie rod; 12. Ball head seat; 13. Ball head pin; 14. Connecting rod; 15. Slot; 16. Block; 17. Fixing sleeve; 18. Slide; 19. Slider; 20. Bolt 1; 21. Bolt 2; 22. Snap ring; 23. Pad.

[0029] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0030] The following is a detailed description of a tractor with front and rear axle steering provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0031] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0032] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0033] like Figure 1-Figure 9 As shown, an embodiment of the utility model provides a tractor with front and rear axle steering, including a tractor body (not shown in the figure), a front axle assembly 1, a rear axle assembly 2, a front brake assembly 3 and a rear brake assembly 4 are arranged at the bottom of the tractor body, the front axle assembly 1 is fixedly connected to the rear axle assembly 2, a front rotating shaft 5 is arranged between the front axle assembly 1 and the front brake assembly 3, the front rotating shaft 5 is used for the rotation between the front brake assembly 3 and the front axle assembly 1, a rear rotating shaft 6 is arranged between the rear axle assembly 2 and the rear brake assembly 4, the rear rotating shaft 6 is used for the rotation between the rear axle assembly 2 and the rear brake assembly 4, a mounting seat 9 is fixed at the bottom of the front axle assembly 1 and the rear axle assembly 2, a rotating oil cylinder 10 is installed on the mounting seat 9, a left steering arm 7 and a right steering arm 8 are fixed at the bottom of the front brake assembly 3 and the rear brake assembly 4, and also includes:

[0034] The split pull rod 11 is used to connect the left steering arm 7 and the right steering arm 8 .

[0035] like Figure 1-Figure 9As shown, in this embodiment, the split pull rod 11 includes a connecting rod 14, and the connecting rod 14 has a groove 15 on its circumferential surface and at its end position, and a block 16 is clamped on the inner wall of the groove 15. Two fixing sleeves 17 are movably sleeved on the circumferential surface of the connecting rod 14, and the surfaces of the two fixing sleeves 17 are provided with bolt 1 20 and bolt 2 21. A threaded hole 1 is opened at a position on the circumferential surface of the connecting rod 14 corresponding to the bolt 1 20, and a threaded hole 2 is opened at a position on the circumferential surface of the block 16 corresponding to the bolt 21. The bolt 1 20 movably penetrates the fixing sleeve 17 and is threadedly connected in the threaded hole 1, and the bolt 21 movably penetrates the fixing sleeve 17 and is threadedly connected in the threaded hole 2. Ball head seats 12 are provided at the ends of the two blocks 16, and ball pins 13 are rotatably connected to the inner walls of the two ball head seats 12. The two ball pins 13 are rotatably connected to the left steering arm 7 and the right steering arm 8 respectively.

[0036] like Figure 6 As shown, in this embodiment, blocks are provided at the bottom of the two fixing sleeves 17. When the fixing sleeves 17 are moved, if the fixing sleeves 17 are too close together, the blocks can be struck with a hammer. The blocks provide a place for striking, thereby improving the convenience of disassembly.

[0037] like Figure 7 As shown, in this embodiment, two slide grooves 18 are provided on the circumferential surface of the connecting rod 14, and sliders 19 are fixed to the inner walls of the two fixed sleeves 17. The sliders 19 are slidably connected in the slide grooves 18. When the sliders 19 slide in the slide grooves 18, they can guide the fixed sleeves 17 to prevent the fixed sleeves 17 from rotating during movement.

[0038] like Figure 5 , Figure 6 , Figure 7 As shown, in this embodiment, the circumferential surface of the connecting rod 14 and the fixing sleeve 17 at both ends are connected with a snap ring 22, the bottom of the clamping block 16 is fixedly connected with a clamping pad 23, the surface of the snap ring 22 is provided with a slope 1, the surface of the clamping pad 23 is provided with a slope 2, the inner wall of the fixing sleeve 17 is provided with a slope 3, the slope 3 is adapted to the slope 1, the slope 3 is adapted to the slope 2, and the slope 2 is adapted to the slope 3. The slope 3 on the fixing sleeve 17 is squeezed on the slope 1 and the slope 2. When fixing, there is a force in the direction of the central axis of the connecting rod 14, so that the clamping block 16 is stuck in the clamping groove 15 more stably, and the clamping block 16 is prevented from moving up and down.

[0039] like Figure 5 As shown, in this embodiment, the surface of the fixing sleeve 17 is provided with a chamfer, so that the palm of the hand is more comfortable when it is placed on the fixing sleeve 17.

[0040] like Figure 8 As shown, in this embodiment, the surface of the clamping block 16 is provided with chamfer 2, and the chamfer 2 has a guiding effect on the clamping block 16, so that the clamping block 16 is more easily clamped in the clamping slot 15.

[0041] like Figure 5 As shown, in this embodiment, the surface of the fixing sleeve 17 is provided with anti-slip stripes to increase the friction between the palm and the fixing sleeve 17 and avoid sliding when the fixing sleeve 17 is moved.

[0042] Working principle: when the tractor is in use and turns, the rotating oil cylinder 10 on the mounting seat 9 is started, and the rotating oil cylinder 10 drives the left steering arm 7 to rotate, and the left steering arm 7 drives the right steering arm 8 to rotate through the split pull rod 11, and the right steering arm 8 and the left steering arm 7 rotate in the same direction, driving the front brake assembly 3 and the rear brake assembly 4 to rotate together, so that the tractor turns;

[0043] When the ball pin 13 on the split pull rod 11 is damaged, remove the bolt 1 20 and the bolt 2 21, move the fixing sleeve 17 to the middle position of the connecting rod 14, so that the block 16 at the end of the ball head seat 12 is disengaged from the slot 15, replace the new ball head seat 12 and the ball pin 13, and then move the fixing sleeve 17 back to the original position, tighten the bolt 1 20 and the bolt 21 to complete the replacement of the ball head seat 12, etc.

[0044] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, the specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A tractor with front and rear axle steering, comprising a tractor body, wherein a front axle assembly (1), a rear axle assembly (2), a front brake assembly (3) and a rear brake assembly (4) are arranged at the bottom of the tractor body, the front axle assembly (1) is fixedly connected to the rear axle assembly (2), a front rotating shaft (5) is arranged between the front axle assembly (1) and the front brake assembly (3), the front rotating shaft (5) is used for rotation between the front brake assembly (3) and the front axle assembly (1), a rear rotating shaft (6) is arranged between the rear axle assembly (2) and the rear brake assembly (4), the rear rotating shaft (6) is used for rotation between the rear axle assembly (2) and the rear brake assembly (4), a mounting seat (9) is fixed at the bottom of the front axle assembly (1) and the rear axle assembly (2), a rotating oil cylinder (10) is installed on the mounting seat (9), a left steering arm (7) and a right steering arm (8) are fixed at the bottom of the front brake assembly (3) and the rear brake assembly (4), and the tractor body is characterized in that: Also includes: A split pull rod (11) is used to connect a left steering arm (7) and a right steering arm (8).

2. The tractor with front and rear axle steering according to claim 1, characterized in that: The split pull rod (11) comprises a connecting rod (14), a groove (15) is provided on the circumferential surface of the connecting rod (14) and at the end position, a clamping block (16) is clamped on the inner wall of the clamping groove (15), two fixing sleeves (17) are movably sleeved on the circumferential surface of the connecting rod (14), a bolt 1 (20) and a bolt 2 (21) are provided on the surface of the two fixing sleeves (17), a threaded hole 1 is provided on the circumferential surface of the connecting rod (14) at a position corresponding to the bolt 1 (20), and the clamping block (16) is provided at the end position of the connecting rod (14). A threaded hole 2 is provided at a position on the circumferential surface corresponding to the position of the second bolt (21); the first bolt (20) movably penetrates the fixing sleeve (17) and is threadedly connected in the first threaded hole; the second bolt (21) movably penetrates the fixing sleeve (17) and is threadedly connected in the second threaded hole; ball seats (12) are provided at the ends of the two clamping blocks (16); ball pins (13) are rotatably connected to the inner walls of the two ball seats (12); and the two ball pins (13) are rotatably connected to the left steering arm (7) and the right steering arm (8) respectively.

3. The tractor with front and rear axle steering according to claim 2, characterized in that: The bottoms of the two fixing sleeves (17) are both provided with blocks.

4. The tractor with front and rear axle steering according to claim 2, characterized in that: The circumferential surface of the connecting rod (14) is provided with two sliding grooves (18), and the inner walls of the two fixing sleeves (17) are both fixed with sliding blocks (19), which are slidably connected in the sliding grooves (18).

5. The tractor with front and rear axle steering according to claim 2, characterized in that: The circumferential surface of the connecting rod (14) and the fixed sleeve (17) at both ends are connected to a clamping ring (22), the bottom of the clamping block (16) is fixedly connected to a clamping pad (23), the surface of the clamping ring (22) is provided with a first inclined surface, the surface of the clamping pad (23) is provided with a second inclined surface, and the inner wall of the fixed sleeve (17) is provided with a third inclined surface, the third inclined surface is matched with the first inclined surface, the third inclined surface is matched with the second inclined surface, and the second inclined surface is matched with the third inclined surface.

6. The tractor with front and rear axle steering according to claim 2, characterized in that: The surface of the fixing sleeve (17) is provided with a chamfer.

7. The tractor with front and rear axle steering according to claim 2, characterized in that: The surface of the clamping block (16) is provided with a second chamfer.

8. The tractor with front and rear axle steering according to claim 2, characterized in that: The surface of the fixing sleeve (17) is provided with anti-slip stripes.

Images