Tractor and agricultural machinery

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By setting pull rods at both ends of the steering cylinder of the tractor and movably connected with the cross arm, the problems of insufficient steering accuracy, poor safety and short service life of the steering cylinder are solved, and more precise steering, higher safety and longer cylinder life are achieved.

CN222905708UActive Publication Date: 2025-05-27CHANGSHA SUNLIGHT AGRI MACHINERY FACILITIES

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Patent Information

Application Number: CN202421706583.5
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-07-18
Publication Date: 2025-05-27
Estimated Expiration: 2034-07-18

AI Technical Summary

Technical Problem

Existing tractors have problems such as insufficient accuracy, poor safety and short service life of steering cylinders when steering.

Method used

A tractor is designed, which is provided with a first tie rod and a second tie rod at both ends of the steering cylinder, and is movably connected to the first cross arm and the second cross arm through these tie rods, so as to effectively eliminate steering errors during steering, improve steering accuracy and safety, and extend the service life of the steering cylinder.

Benefits of technology

More precise steering is achieved, safety is improved, and the service life of the steering cylinder is extended.

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Abstract

The utility model provides a tractor and agricultural machinery, the tractor comprises a first traction joint and a second traction joint movably connected with the first traction joint, one end of the first traction joint deviating from the second traction joint is provided with a fixedly arranged steering oil cylinder; a first brake hub and a second brake hub which can rotate are arranged on the two sides of the first traction joint respectively, and a first cross arm and a second cross arm which are fixedly arranged are further arranged on the first brake hub and the second brake hub respectively. The tractor further comprises a first pull rod and a second pull rod, one end of the first pull rod is movably connected with the first cross arm, the other end of the first pull rod is movably connected with one end of the steering oil cylinder, one end of the second pull rod is movably connected with the second cross arm, and the other end of the second pull rod is movably connected with the steering oil cylinder. And the other end of the second pull rod is movably connected with the other end of the steering oil cylinder. According to the tractor of the structure, more accurate steering can be achieved, safety is better, and the service life of the steering oil cylinder is longer.

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Description

Technical Field

[0001] The utility model relates to the field of agricultural machinery, in particular to a tractor and agricultural machinery. Background Art

[0002] In recent years, with the continuous advancement of technology and the continuous development of the economy, various types of agricultural machinery, such as tractors, have made great progress and have been increasingly widely used in agricultural production activities.

[0003] There are many types of tractors currently in use, which can be classified according to the steering method, including front-wheel steering, folding-waist steering, and both front-wheel and folding-waist steering. However, the tractors currently in widespread use, especially those with folding-waist steering, although they have the advantages of small turning radius and good passability, they also generally have problems such as inaccurate steering, relatively poor safety, and relatively short service life of steering cylinders.

[0004] In summary, how to provide a tractor with more precise steering, better safety, and longer service life of the steering cylinder, and agricultural machinery including such a tractor, has become a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a tractor with more precise steering, better safety and longer service life of the steering cylinder, and an agricultural machine comprising the tractor.

[0006] The solution of the utility model is achieved as follows: the utility model proposes a tractor, comprising a first traction joint and a second traction joint movably connected to the first traction joint, wherein the first traction joint is provided with a fixed steering cylinder at one end away from the second traction joint; the first traction joint is provided with a rotatable first brake hub and a second brake hub on both sides, respectively, and the first brake hub and the second brake hub are also provided with a fixed first cross arm and a second cross arm respectively; the tractor also comprises a first pull rod and a second pull rod, wherein one end of the first pull rod is movably connected to the first cross arm, the other end of the first pull rod is movably connected to one end of the steering cylinder, one end of the second pull rod is movably connected to the second cross arm, and the other end of the second pull rod is movably connected to the other end of the steering cylinder. The tractor of this structure is provided with a first pull rod and a second pull rod at both ends of the steering cylinder, and then the first pull rod and the second pull rod are respectively movably connected to the first cross arm and the second cross arm, so that the steering error can be eliminated more effectively during steering, so that more accurate steering can be achieved, the safety is better, and the service life of the steering cylinder is longer.

[0007] Another technical solution of the utility model is that on the basis of the above, the steering cylinder includes a cylinder barrel and a first piston rod and a second piston rod movable in the cylinder barrel, one end of the first piston rod is fixedly connected to one end of the second piston rod, and the cylinder barrel is fixedly arranged at the end of the first traction joint.

[0008] Another technical solution of the utility model is that on the basis of the above, a first ball head is provided at one end of the first piston rod away from the second piston rod, and an end of the first pull rod close to the steering cylinder is movably connected to the first piston rod through the first ball head.

[0009] Another technical solution of the utility model is that on the basis of the above, a second ball head is provided at the end of the second piston rod away from the first piston rod, and the end of the second pull rod close to the steering cylinder is movably connected to the second piston rod through the second ball head.

[0010] Another technical solution of the utility model is that on the basis of the above, a straight arm is further provided on one side of the second cross arm, and the straight arm is fixedly connected to the second brake hub. When the second brake hub rotates, the straight arm is driven to rotate.

[0011] Another technical solution of the utility model is that on the basis of the above, a transition arm which can rotate around the first traction joint is further provided on one side of the first traction joint, and the transition arm is arranged on one side of the second brake hub.

[0012] Another technical solution of the utility model is that on the basis of the above, the tractor further includes a third pull rod, one end of the third pull rod is movably connected to the straight arm, and the other end of the third pull rod is movably connected to the transition arm.

[0013] Another technical solution of the utility model is that on the basis of the above, the tractor also includes a fourth pull rod, one end of the fourth pull rod is movably connected to one end of the transition arm, and the other end of the fourth pull rod is movably connected to one end of the second traction joint.

[0014] Another technical solution of the utility model is that on the basis of the above, a connecting plate is further provided on one side of the second traction joint, and one end of the fourth pull rod away from the transition arm is hinged to the connecting plate.

[0015] On the other hand, the utility model also provides an agricultural machine, comprising a tractor, wherein the tractor is the tractor as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

[0017] Figure 1 It is a schematic structural diagram of a tractor of the present utility model.

[0018] The corresponding relationship of the reference numerals is as follows:

[0019] 1 First brake hub, 2 First cross arm, 3 First pull rod

[0020] 4 First ball head, 5 Steering cylinder, 6 Second ball head

[0021] 7 Second pull rod, 8 Second cross arm, 9 Second brake hub

[0022] 10 Straight arm, 11 Third pull rod, 12 Transition arm

[0023] 13 Fourth pull rod, 14 First traction section, 15 Hinge point

[0024] 16 Second traction section, 17 Tire, 18 First piston rod

[0025] 19 Second piston rod, 20 Connecting plate Detailed implementation manners

[0026] The present utility model will be described in detail below with reference to the accompanying drawings. The description of this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model. In addition, those skilled in the art can make corresponding combinations of the features in the embodiments and different embodiments in this document according to the description of this document.

[0027] The embodiments of the present utility model are as follows. Please refer to Figure 1The tractor shown includes a first towing section 14 and a second towing section 16 movably connected to the first towing section 14. Specifically, the first towing section 14 and the second towing section 16 are hinged at a hinge point 15. At one end of the first towing section 14 facing away from the second towing section 16, that is, the left end shown in the figure, a fixedly arranged steering cylinder 5 is provided. On both sides of the first towing section 14, rotatable first brake hubs 1 and second brake hubs 9 are respectively provided, and fixedly arranged first cross arms 2 and second cross arms 8 are respectively provided on the first brake hubs 1 and the second brake hubs 9. The tractor further includes a first pull rod 3 and a second pull rod 7. One end of the first pull rod 3, that is, the upper end shown in the figure, is movably connected to the first cross arm 2, and the other end of the first pull rod 3, that is, the lower end shown in the figure, is movably connected to one end of the steering cylinder 5, that is, the upper end of the steering cylinder 5. One end of the second pull rod 7, that is, the lower end shown in the figure, is movably connected to the second cross arm 8, and the other end of the second pull rod 7, that is, the upper end shown in the figure, is movably connected to the other end of the steering cylinder 5, that is, the lower end shown in the figure. For the tractor with this structure, by respectively arranging the first pull rod 3 and the second pull rod 7 at both ends of the steering cylinder 5, and then respectively movably connecting the first pull rod 3 and the second pull rod 7 to the first cross arm 2 and the second cross arm 8, during steering, steering errors can be more effectively eliminated. Therefore, more precise steering can be achieved, the safety is better, and the service life of the steering cylinder 5 is also longer.

[0028] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 1 shown, for the steering cylinder 5, it specifically includes a cylinder barrel and a first piston rod 18 and a second piston rod 19 that can move left and right in the cylinder barrel. One end of the first piston rod 18, that is, the lower end shown in the figure, is fixedly connected to one end of the second piston rod 19, that is, the upper end shown in the figure, or the first piston rod 18 and the second piston rod 19 are of an integral structure, and the cylinder barrel is fixedly arranged at the end of the first towing section 14, that is, the left end shown in the figure.

[0029] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 1 shown, at one end of the first piston rod 18 facing away from the second piston rod 19, that is, the upper end shown in the figure, a first ball head 4 is provided. One end of the first pull rod 3 close to the steering cylinder 5, that is, the lower end shown in the figure, is movably connected to the first piston rod 18 through the first ball head 4.

[0030] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 1 shown, at one end of the second piston rod 19 facing away from the first piston rod 18, that is, the lower end shown in the figure, a second ball head 6 is provided. One end of the second pull rod 7 close to the steering cylinder 5, that is, the upper end shown in the figure, is movably connected to the second piston rod 19 through the second ball head 6.

[0031] On the basis of the above embodiment, in another embodiment of the present utility model, asFigure 1 As shown, one side of the second cross arm 8, that is, the right side shown in the figure, is also provided with a straight arm 10 for steering. The straight arm 10 is fixedly connected to the second brake hub 9. When the second brake hub 9 rotates, the straight arm 10 can be driven to rotate.

[0032] Based on the above embodiment, in another embodiment of the utility model, as Figure 1 As shown, a transition arm 12 which can rotate around the first traction joint 14 is also provided on one side of the first traction joint 14, namely, the lower side shown in the figure. The transition arm 12 is arranged on one side of the second brake hub 9, namely, the right side shown in the figure.

[0033] Based on the above embodiment, in another embodiment of the utility model, as Figure 1 As shown, the tractor also includes a third tie rod 11, one end of the third tie rod 11, that is, the left end shown in the figure is movably connected to the end of the straight arm 10, and the other end of the third tie rod 11, that is, the right end shown in the figure is movably connected to the transition arm 12.

[0034] Based on the above embodiment, in another embodiment of the utility model, as Figure 1 As shown, the tractor also includes a fourth pull rod 13, one end of the fourth pull rod 13, i.e. the left end shown in the figure, is movably connected to one end of the transition arm 12, i.e. the lower end shown in the figure, and the other end of the fourth pull rod 13, i.e. the right end shown in the figure, is movably connected to one end of the second traction joint 16, i.e. the left end shown in the figure.

[0035] Based on the above embodiment, in another embodiment of the utility model, as Figure 1 As shown, a connecting plate 20 is also provided on one side of the second traction joint 16, that is, the lower side shown in the figure, and an end of the fourth pull rod 13 away from the transition arm 12, that is, the right end shown in the figure, is hinged to the connecting plate 20. In addition, a plurality of detachable tires 17 are also provided on both sides of the second traction joint 16. Similarly, tires are also provided on the first brake hub 1 and the second brake hub 9 accordingly.

[0036] During operation, when the tractor needs to turn right, the first piston rod 18 extends upward, drives the first pull rod 3 and the first cross arm 2 to rotate counterclockwise through the first ball head 4, and then drives the first brake hub 1 to turn right, thus realizing a right turn. During this process, the second piston rod 19 drives the second cross arm 8 and the second brake hub 9 to turn right, and drives the third pull rod 11, the transition arm 12 and the fourth pull rod 13 to rotate clockwise through the straight arm 10, thus realizing a bending turn.

[0037] For the tractor with this structure, by respectively arranging a first pull rod 3 and a second pull rod 7 at both ends of the steering oil cylinder 5, and then respectively and movably connecting the first pull rod 3 and the second pull rod 7 with a first cross arm 2 and a second cross arm 8, and arranging a first ball head 4 at the connection between the first pull rod 3 and the first piston rod 18, and arranging a second ball head 6 at the connection between the second pull rod 7 and the second piston rod 19. Both the first ball head 4 and the second ball head 6 are steering ball heads. Therefore, during steering, the steering error can be more effectively eliminated. Thus, more precise steering can be achieved, the safety is better, and the service life of the steering oil cylinder 5 is also longer.

[0038] In addition, the present utility model also proposes an agricultural machine, including a tractor, and the tractor is the tractor as described above. For the agricultural machine with this structure, correspondingly, it has the advantages of the above-mentioned tractor.

[0039] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A tractor, characterized in that: It comprises a first traction joint and a second traction joint movably connected to the first traction joint, wherein a fixed steering cylinder is provided at one end of the first traction joint away from the second traction joint; A rotatable first brake hub and a second brake hub are respectively provided on both sides of the first traction joint, and a fixed first cross arm and a second cross arm are respectively provided on the first brake hub and the second brake hub; The tractor also includes a first pull rod and a second pull rod, one end of the first pull rod is movably connected to the first cross arm, the other end of the first pull rod is movably connected to one end of the steering cylinder, one end of the second pull rod is movably connected to the second cross arm, and the other end of the second pull rod is movably connected to the other end of the steering cylinder.

2. The tractor according to claim 1, characterized in that: The steering cylinder comprises a cylinder barrel and a first piston rod and a second piston rod movable in the cylinder barrel, one end of the first piston rod is fixedly connected to one end of the second piston rod, and the cylinder barrel is fixedly arranged at the end of the first traction joint.

3. The tractor according to claim 2, characterized in that: A first ball head is provided at one end of the first piston rod facing away from the second piston rod, and an end of the first pull rod close to the steering cylinder is movably connected to the first piston rod through the first ball head.

4. The tractor according to claim 3, characterized in that: A second ball head is provided at one end of the second piston rod facing away from the first piston rod, and an end of the second pull rod close to the steering cylinder is movably connected to the second piston rod through the second ball head.

5. The tractor according to claim 4, characterized in that: A straight arm is further provided on one side of the second cross arm. The straight arm is fixedly connected to the second brake hub. When the second brake hub rotates, the straight arm is driven to rotate.

6. The tractor according to claim 5, characterized in that: A transition arm which can rotate around the first traction joint is also provided on one side of the first traction joint, and the transition arm is arranged on one side of the second brake hub.

7. The tractor according to claim 6, characterized in that: The tractor further comprises a third pull rod, one end of which is movably connected to the straight arm, and the other end of which is movably connected to the transition arm.

8. The tractor according to claim 7, characterized in that: The tractor further comprises a fourth pull rod, one end of which is movably connected to one end of the transition arm, and the other end of which is movably connected to one end of the second traction joint.

9. The tractor according to claim 8, characterized in that: A connecting plate is also provided on one side of the second traction joint, and one end of the fourth pull rod facing away from the transition arm is hinged to the connecting plate.

10. An agricultural machine, comprising a tractor, characterized in that: The tractor is the tractor according to any one of claims 1 to 9.