Quick wheel track adjustment device for tractor

Abstract

The utility model discloses a tractor quick wheel track adjusting device relates to the technical field of agricultural machinery, solved the existing tire structure difficult to adjust wheel track, need special tool, time -consuming and labor -intensive's problem, wherein, the outer wheel hub is installed on the front axle, is equipped with the thread bush on the outer wheel hub, is equipped with the keyway and the baffle on the inner wheel hub, the wheel rim is installed on the inner wheel hub, the tire is installed on the wheel rim, at least two flat keys are installed on the outer wheel hub, and each flat key slip installation is in a keyway of the inner wheel hub, the third nut is located in the baffle, and the adjusting rod is assembled in the thread bush after passing the baffle and the third nut in proper order. The utility model discloses simple structure, low cost, need not to dismouting tire, can quick regulation wheel track, and the adjusting rod moves with tire, and will not show too long and affect the passability.

Description

Technical Field

[0001] This utility model relates to the technical field of agricultural machinery, and in particular to a tractor quick wheel track adjustment device. Background Technology

[0002] The current widespread adoption of the dense ridge planting model requires high-horsepower tractors to adjust their wheel track to 2.2 meters or 2.6 meters during sowing and tillage, which is inconvenient for tractors in special fields. However, during land preparation and other operations, the wheel track must be restored to the standard track (1.3-1.6 meters). Existing tire adjustment schemes have the following drawbacks:

[0003] 1. Removing and installing wheel spokes: This requires removing bolts and changing the position of the spokes. A single adjustment takes more than 2 hours and requires special tools, which is time-consuming and labor-intensive.

[0004] 2. Extendable drive shaft hub: The drive shaft needs to be reserved with an extra-long extension section, which makes the drive shaft bulky, increases manufacturing costs, and when adjusted to the standard wheel track, the drive shaft extends too far, which is easy to scratch field obstacles. Utility Model Content

[0005] To address the problems of existing tire structures making it difficult to adjust wheel track, requiring specialized tools, and being time-consuming and labor-intensive, the purpose of this utility model is to provide a tractor wheel track adjustment device that does not require disassembling or assembling wheel rims, allows for rapid adjustment, and is inexpensive.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A tractor quick wheel track adjustment device includes: an outer wheel hub 3, an inner wheel hub 4, a flat key 5, a tire 6, a wheel rim 7, a third nut 9, and an adjusting rod 10. The outer wheel hub 3 is mounted on the front axle 1. A threaded sleeve B is provided on the outer wheel hub 3. A keyway A and a baffle C are provided on the inner wheel hub 4. The wheel rim 7 is mounted on the inner wheel hub 4. The tire 6 is mounted on the wheel rim 7.

[0008] At least two flat keys 5 are installed on the outer hub 3, and each flat key 5 is slidably installed in a keyway A in the inner hub 4; the third nut 9 is located in the baffle C, and the adjusting rod 10 passes through the baffle C and the third nut 9 in sequence and is then assembled in the threaded sleeve B.

[0009] In the aforementioned tractor quick wheel track adjustment device, the threaded sleeve B, the baffle C, and the third nut 9 are coaxially arranged.

[0010] In the aforementioned tractor quick wheel track adjustment device, the baffle C is used to limit the inner and outer sides of the third nut 9, and the side of the baffle C has an opening for adjusting the third nut 9.

[0011] The aforementioned tractor quick wheel track adjustment device includes an adjustment rod 10 comprising an adjustment sleeve and a threaded rod. The end of the threaded rod is connected to the adjustment sleeve. After the threaded rod passes through the baffle C, the third nut 9 and the threaded sleeve B are both threadedly connected to the threaded rod.

[0012] In the aforementioned tractor quick wheel track adjustment device, multiple flat keys 5 are installed on the inner wall of the outer wheel hub 3 and are arranged at equal angles around the axis of the outer wheel hub 3.

[0013] The aforementioned tractor quick wheel track adjustment device has an inner wheel hub 4 with the same number of keyways A as the number of flat keys 5, with each flat key 5 slidably installed in a keyway A.

[0014] The aforementioned tractor quick wheel track adjustment device further includes: a first nut 2, an outer wheel hub 3 and a front axle 1 connected by a plurality of first nuts 2.

[0015] The aforementioned tractor quick wheel track adjustment device further includes: a second nut 8, and the inner hub 4 and wheel rim 7 are assembled and connected by multiple second nuts 8.

[0016] In the aforementioned tractor quick wheel track adjustment device, the outer diameter of the inner hub 4 is smaller than the inner diameter of the outer hub 3, and the inner hub 4 and the outer hub 3 are coaxially arranged.

[0017] In the aforementioned tractor quick wheel track adjustment device, the inner diameter of the inner hub 4 is larger than the outer diameter of the threaded sleeve B, and the inner hub 4 and the threaded sleeve B are coaxially arranged.

[0018] Because this utility model employs the aforementioned technology, it has the following positive effects compared to existing technologies:

[0019] (1) This utility model has a simple structure and low cost. It can quickly adjust the wheel track without disassembling the tire. The adjustment rod moves with the tire and will not be exposed too long, affecting the passability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a tractor quick wheel track adjustment device according to the present invention.

[0021] In the attached diagram: 1. Front axle; 2. First nut; 3. Outer hub; 4. Inner hub; 5. Flat key; 6. Tire; 7. Wheel rim; 8. Second nut; 9. Third nut; 10. Adjusting rod; A. Keyway; B. Threaded sleeve; C. Baffle. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0023] Please refer to Figure 1The diagram shows a tractor quick wheel track adjustment device, comprising: an outer wheel hub 3, an inner wheel hub 4, a flat key 5, a tire 6, a wheel rim 7, a third nut 9, and an adjusting rod 10. The outer wheel hub 3 is mounted on the front axle 1; a threaded sleeve B is provided on the outer wheel hub 3; a keyway A and a baffle C are provided on the inner wheel hub 4; the wheel rim 7 is mounted on the inner wheel hub 4; and the tire 6 is mounted on the wheel rim 7.

[0024] At least two flat keys 5 are installed on the outer hub 3, and each flat key 5 is slidably installed in a keyway A in the inner hub 4; the third nut 9 is located in the baffle C, and the adjusting rod 10 passes through the baffle C and the third nut 9 in sequence and is then assembled in the threaded sleeve B.

[0025] Furthermore, in a preferred embodiment, the threaded sleeve B, the baffle C, and the third nut 9 are coaxially arranged.

[0026] Furthermore, in a preferred embodiment, the baffle C is used to limit the inner and outer sides of the third nut 9, and the side of the baffle C is provided with an opening for adjusting the third nut 9.

[0027] Furthermore, in a preferred embodiment, the third nut 9, in conjunction with the threaded sleeve B, locks the inner hub 4. The third nut 9 needs to be tightened after each adjustment of the wheel track, rotating until... Figure 1 As shown, the third nut 9 abuts against the inner hub 4 to prevent the inner hub 4 from shifting axially within the outer hub 3 during vehicle operation, thus affecting driving stability.

[0028] Furthermore, in a preferred embodiment, the side of the baffle C is provided with an opening to facilitate the insertion of a wrench or other auxiliary tools to adjust the third nut 9.

[0029] Furthermore, in a preferred embodiment, the adjusting rod 10 includes an adjusting sleeve and a threaded rod, the end of the threaded rod being connected to the adjusting sleeve, and after the threaded rod passes through the baffle C, the third nut 9 and the threaded sleeve B are both threadedly connected to the threaded rod.

[0030] Furthermore, in a preferred embodiment, the adjusting sleeve is used to insert a long wrench or other auxiliary tool to adjust the adjusting rod 10 by means of a longer lever arm; the driver can quickly adjust it by himself, which makes it convenient for the driver to adjust the wheel track at any time.

[0031] Furthermore, in a preferred embodiment, a plurality of flat keys 5 are all installed on the inner wall of the outer hub 3 and are arranged at equal angles around the axis of the outer hub 3.

[0032] Furthermore, in a preferred embodiment, the inner hub 4 is provided with the same number of keyways A as the number of flat keys 5, and each flat key 5 is slidably installed in one keyway A.

[0033] Furthermore, in a preferred embodiment, a structure in which multiple flat keys 5 slide in conjunction with keyways A is adopted, which not only ensures the axial displacement of the outer hub 3 on the inner hub 4, but also ensures the transmission of torque between the outer hub 3 and the inner hub 4, thus ensuring stable vehicle operation.

[0034] Furthermore, in a preferred embodiment, a flat key 5 is used in sliding engagement with the keyway A. The flat key 5 is made of a high-strength and wear-resistant material to ensure the service life of the structure. The overall structure is simple, easy to assemble, low in cost, and easy to maintain and replace.

[0035] Furthermore, in a preferred embodiment, it further includes: a first nut 2, the outer hub 3 and the front axle 1 are assembled and connected by a plurality of first nuts 2.

[0036] Furthermore, in a preferred embodiment, it further includes: a second nut 8, the inner hub 4 and the wheel rim 7 are assembled and connected by a plurality of second nuts 8.

[0037] Furthermore, in a preferred embodiment, the outer diameter of the inner hub 4 is smaller than the inner diameter of the outer hub 3, and the inner hub 4 and the outer hub 3 are coaxially arranged.

[0038] Furthermore, in a preferred embodiment, the inner diameter of the inner hub 4 is larger than the outer diameter of the threaded sleeve B, and the inner hub 4 and the threaded sleeve B are coaxially arranged.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.

[0040] Based on the above, this utility model also has the following embodiments:

[0041] In a further embodiment of this utility model, the outer hub 3 is mounted on the front axle 1; the flat key 5 is mounted on the outer hub 3; the inner hub 4 is mounted on the outer hub 3 in sequence via the third nut 9 and the adjusting rod 10, and can extend and retract on the keyway A; the tire 6 is mounted on the rim 7; the rim 7 is mounted on the inner hub 4 and locked with the second nut 8.

[0042] In a further embodiment of this utility model, when it is necessary to adjust the wheel track outward, the adjusting rod 10 is rotated counterclockwise. The adjusting rod 10 and the threaded sleeve B in the outer wheel hub 3 generate force. The adjusting rod 10 pushes the baffle C in the inner wheel hub 4 through the nut 9, thereby driving the inner wheel hub 4, wheel rim 7 and tire 6 to be pushed outward. After adjusting to the appropriate position, the third nut 9 is used to lock it.

[0043] In a further embodiment of this utility model, when the wheel track needs to be adjusted inward, the adjusting rod 10 is rotated clockwise. The adjusting rod 10 and the threaded sleeve B in the outer wheel hub 3 generate a force, thereby pushing the inner wheel hub 4, wheel rim 7 and tire 6 to move inward. After adjusting to the appropriate position, the third nut 9 is used to lock it.

[0044] In a further embodiment of this utility model, the solution has a simple structure and low cost. The wheel track can be quickly adjusted without removing or installing the tires; the adjusting rod 10 moves with the tires and is not excessively exposed, thus not affecting passability.

[0045] In a further embodiment of this utility model, when the vehicle needs to maintain a narrow wheelbase, the adjusting rod 10 is located inside the threaded sleeve B, so it will not scrape against obstacles in the field, nor will it protrude too far and affect passability.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tractor quick wheel track adjustment device, characterized in that, include: Outer hub (3), inner hub (4), flat key (5), tire (6), rim (7), third nut (9) and adjusting rod (10). The outer hub (3) is mounted on the front axle (1). The outer hub (3) is provided with a threaded sleeve (B). The inner hub (4) is provided with a keyway (A) and a baffle (C). The rim (7) is mounted on the inner hub (4). The tire (6) is mounted on the rim (7). At least two flat keys (5) are installed on the outer hub (3), and each flat key (5) is slidably installed in a keyway (A) of the inner hub (4); the third nut (9) is located in the baffle (C), and the adjusting rod (10) passes through the baffle (C) and the third nut (9) in sequence and is then assembled in the threaded sleeve (B).

2. The tractor rapid wheel track adjustment device according to claim 1, characterized in that, The threaded sleeve (B), the baffle (C), and the third nut (9) are arranged coaxially.

3. The tractor rapid wheel track adjustment device according to claim 1, characterized in that, The baffle (C) is used to limit the inner and outer sides of the third nut (9), and the side of the baffle (C) has an opening for adjusting the third nut (9).

4. The tractor rapid wheel track adjustment device according to claim 1, characterized in that, The adjusting rod (10) includes an adjusting sleeve and a threaded rod. The end of the threaded rod is connected to the adjusting sleeve. After the threaded rod passes through the baffle (C), the third nut (9) and the threaded sleeve (B) are both threadedly connected to the threaded rod.

5. The tractor rapid wheel track adjustment device according to claim 1, characterized in that, Multiple flat keys (5) are installed on the inner wall of the outer hub (3) and are set at equal angles around the axis of the outer hub (3).

6. The tractor rapid wheel track adjustment device according to claim 5, characterized in that, The inner hub (4) is provided with the same number of keyways (A) as the flat key (5), and each flat key (5) is slidably installed in a keyway (A).

7. The tractor rapid wheel track adjustment device according to claim 1, characterized in that, Also includes: The first nut (2), the outer hub (3) and the front axle (1) are assembled and connected by multiple first nuts (2).

8. The tractor quick wheel track adjustment device according to claim 1, characterized in that, Also includes: The inner hub (4) and the wheel rim (7) are assembled and connected by a second nut (8).

9. The tractor rapid wheel track adjustment device according to claim 1, characterized in that, The outer diameter of the inner hub (4) is smaller than the inner diameter of the outer hub (3), and the inner hub (4) and the outer hub (3) are coaxially arranged.

10. The tractor rapid wheel track adjustment device according to claim 1, characterized in that, The inner diameter of the inner hub (4) is larger than the outer diameter of the threaded sleeve (B), and the inner hub (4) and the threaded sleeve (B) are coaxially arranged.

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