Double-wheel connecting mechanism for adjusting narrow wheel track of tractor

Abstract

The utility model discloses a double-wheel connecting mechanism for adjusting the narrow wheel track of a tractor, which comprises a rear axle box and bearing wheels, the side surface of the rear axle box is provided with a connecting shaft positioned outside the rear axle box, the end part of the connecting shaft is provided with a hub flange, and the bearing wheels comprise a first bearing wheel and a second bearing wheel; the first bearing wheel is connected with a hub flange through a connecting piece, the second bearing wheel is installed on the side face of the connecting piece through a positioning piece, the bearing wheel comprises a hub, and a circular plate is arranged in the middle of the hub. According to the double-wheel connecting mechanism for adjusting the narrow wheel track of the tractor, the contact area between the tractor and the ground is increased by arranging double wheels, the load capacity of the tractor is improved, use of the tractor is facilitated, the overall width of the tractor is adjusted by detaching tires on the outer side, and the tractor can operate in narrow environments such as fields and forest lands conveniently; meanwhile, the connecting mechanism has the advantages of being simple in connection and convenient to disassemble, and has high connecting strength.

Description

Technical Field

[0001] The utility model relates to the technical field of tractors, in particular to a double-wheel connection mechanism for adjusting the narrow wheelbase of a tractor. Background Art

[0002] In order to improve the load capacity of tractors during use, the tire width is usually set larger, and the tractor load is increased by increasing the contact area between the tractor tire and the ground. However, the increase in the width of the tractor tire will increase the overall width of the tractor, which will damage crops such as seedlings when operating in narrow spaces such as fields and woodlands, which is not conducive to the use of the tractor. At present, the width of the tractor is usually adjusted by adjusting the wheelbase, but the adjustment of the tractor wheelbase is difficult and requires professional personnel and professional equipment for debugging, which is not conducive to the use of the tractor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a double-wheel connection mechanism for adjusting the narrow wheelbase of a tractor. By arranging the double wheels, the contact area between the tractor and the ground is increased, the load capacity of the tractor is improved, and the use of the tractor is convenient. The overall width of the tractor can be adjusted by removing the outer tires, which is convenient for the tractor to operate in narrow environments such as fields and woodlands. At the same time, the connection mechanism has the characteristics of simple connection and convenient disassembly, and has a high connection strength, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-wheel connection mechanism for adjusting the narrow wheelbase of a tractor, comprising a rear axle box and load-bearing wheels, a connecting shaft located outside the rear axle box is installed on the side of the rear axle box, and a hub flange is installed on the end of the connecting shaft, the load-bearing wheels comprise a first load-bearing wheel and a second load-bearing wheel, the first load-bearing wheel is connected to the hub flange via a connecting piece, the second load-bearing wheel is installed on the side of the connecting piece via a positioning piece, the load-bearing wheel comprises a hub, a circular plate is arranged in the middle of the hub, the circular plate is fixedly connected to the hub via a connecting frame, a connecting hole matching the connecting piece and the positioning piece is provided on the side of the connecting frame, and a mounting hole is provided in the middle of the side of the circular plate.

[0005] As a preferred technical solution of the utility model, the connecting member includes a first bolt located in a connecting hole on the side of the first load-bearing wheel, a nut for positioning the first bolt is arranged on the side of the hub flange, a connecting block is fixed on the side of the first bolt, and a connecting thread groove is opened on the side of the connecting block.

[0006] As a preferred technical solution of the utility model, the positioning member includes a second bolt located in a connecting hole on the side of the second load-bearing wheel, and the second bolt is adapted to a connecting thread groove on the side of the connecting block.

[0007] As a preferred technical solution of the utility model, the connecting member also includes a positioning shaft fixed to the side of the hub flange, and the positioning shaft is located in the mounting hole on the side of the circular plate in the first load-bearing wheel, and a key slot is opened on the side of the mounting hole, and a key that is clamped in the key slot is fixed on the side of the positioning shaft.

[0008] As a preferred technical solution of the utility model, a positioning thread groove is opened at one end of the positioning shaft, a fixed shaft is arranged in the mounting hole on the side of the circular plate in the second load-bearing wheel, and a screw is fixed at the end of the fixed shaft, and the screw is adapted to the positioning thread groove.

[0009] As a preferred technical solution of the utility model, a first sealing plug for sealing the connecting thread groove is arranged on the side of the connecting block, and a second sealing plug for sealing the positioning thread groove is arranged on the side of the positioning shaft.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The tractor is supported by the first load-bearing wheel and the second load-bearing wheel, and the first load-bearing wheel and the second load-bearing wheel increase the contact area between the tractor and the ground, thereby improving the load capacity of the tractor. When the tractor operates in a narrow space, the second load-bearing wheel is removed from the side of the first load-bearing wheel to reduce the width of the tractor wheels, thereby facilitating the tractor to operate in the field. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 A schematic diagram of the front view structure of the first load-bearing wheel;

[0014] Figure 3 for Figure 1 A schematic diagram of the structure when the first load-bearing wheel is connected to the hub flange;

[0015] Figure 4 for Figure 1 A schematic diagram of the structure of the other side of the first load-bearing wheel;

[0016] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 6 for Figure 1 A schematic diagram of the structure of the first sealing plug and the second sealing plug;

[0018] Figure 7 for Figure 1 A schematic diagram of the structure of the second load-bearing wheel;

[0019] Figure 8 for Figure 1 A schematic diagram of the front view structure of the second load-bearing wheel from another perspective.

[0020] In the figure: 1 rear axle box, 2 connecting shaft, 3 hub flange, 4 load-bearing wheel, 41 first load-bearing wheel, 42 second load-bearing wheel, 5 hub, 51 connecting frame, 52 connecting hole, 53 round plate, 54 mounting hole, 55 keyway, 6 first bolt, 61 nut, 7 connecting block, 71 connecting thread groove, 72 first sealing plug, 8 positioning shaft, 81 key, 82 positioning thread groove, 83 second sealing plug, 9 second bolt, 10 fixing shaft, 11 screw. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-8 The utility model provides a technical solution: a double-wheel connection mechanism for adjusting the narrow wheelbase of a tractor, comprising a rear axle box 1 and a load-bearing wheel 4, a connecting shaft 2 located outside the rear axle box 1 is installed on the side of the rear axle box 1, and a hub flange 3 is installed on the end of the connecting shaft 2, the load-bearing wheel 4 comprises a first load-bearing wheel 41 and a second load-bearing wheel 42, the first load-bearing wheel 41 is connected to the hub flange 3 through a connecting piece, the second load-bearing wheel 42 is installed on the side of the connecting piece through a positioning piece, the load-bearing wheel 4 comprises a hub 5, a circular plate 53 is arranged in the middle of the hub 5, and the circular plate 53 is connected to the connecting frame 51 is fixedly connected to the wheel hub 5, a connecting hole 52 adapted to the connecting piece and the positioning piece is opened on the side of the connecting frame 51, and a mounting hole 54 is opened in the middle of the side of the circular plate 53. The tractor is supported by the first load-bearing wheel 41 and the second load-bearing wheel 42, and the first load-bearing wheel 41 and the second load-bearing wheel 42 increase the contact area between the tractor and the ground, and improve the load capacity of the tractor. When the tractor is operating in a narrow space, the second load-bearing wheel 42 is removed from the side of the first load-bearing wheel 41 to reduce the width of the tractor wheel, which is convenient for the tractor to operate in the field.

[0023] The connecting member includes a first bolt 6 located in a connecting hole 52 on the side of the first load-bearing wheel 41, and a nut 61 for positioning the first bolt 6 is provided on the side of the hub flange 3. The first bolt 6 is positioned by the nut 61 to install the first load-bearing wheel 41 on the side of the hub flange 3. A connecting block 7 is fixed to the side of the first bolt 6, and a connecting thread groove 71 is provided on the side of the connecting block 7. The positioning member includes a second bolt 9 located in a connecting hole 52 on the side of the second load-bearing wheel 42, and the second bolt 9 is adapted to the connecting thread groove 71 on the side of the connecting block 7. The second load-bearing wheel 42 is positioned by installing the second bolt 9 in the connecting thread groove 71, which facilitates the installation and use of the second load-bearing wheel 42.

[0024] The connecting part also includes a positioning shaft 8 fixed to the side of the hub flange 3, and the positioning shaft 8 is located in the mounting hole 54 on the side of the circular plate 53 in the first load-bearing wheel 41, and a key groove 55 is opened on the side of the mounting hole 54, and a key 81 is fixed on the side of the positioning shaft 8 and is clamped in the key groove 55. The arrangement of the key 81 and the key groove 55 improves the structural strength of the first load-bearing wheel 41 after installation, and facilitates the use of the first load-bearing wheel 41.

[0025] A positioning thread groove 82 is provided at one end of the positioning shaft 8, a fixed shaft 10 is provided in the mounting hole 54 on the side of the circular plate 53 in the second load-bearing wheel 42, and a screw 11 is fixed to the end of the fixed shaft 10, the screw 11 is adapted to the positioning thread groove 82, and the fixed shaft 10 is positioned by installing the screw 11 in the positioning thread groove 82, and the fixed shaft 10 improves the installation strength of the second load-bearing wheel 42.

[0026] A first sealing plug 72 for sealing the connecting thread groove 71 is arranged on the side of the connecting block 7, and a second sealing plug 83 for sealing the positioning thread groove 82 is arranged on the side of the positioning shaft 8. When the second load-bearing wheel 42 is not installed, the connecting thread groove 71 is sealed by the first sealing plug 72 and the positioning thread groove 82 is sealed by the second sealing plug 83, which facilitates the use of the present connecting mechanism.

[0027] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A double-wheel connection mechanism for adjusting a narrow wheelbase of a tractor, comprising a rear axle box (1) and a load-bearing wheel (4), characterized in that: The side of the rear axle box (1) is provided with a connecting shaft (2) located outside the rear axle box, and the end of the connecting shaft (2) is provided with a hub flange (3). The load-bearing wheel (4) comprises a first load-bearing wheel (41) and a second load-bearing wheel (42). The first load-bearing wheel (41) is connected to the hub flange (3) via a connecting piece, and the second load-bearing wheel (42) is installed on the side of the connecting piece via a positioning piece. The load-bearing wheel (4) comprises a hub (5). A circular plate (53) is provided in the middle of the hub (5). The circular plate (53) is fixedly connected to the hub (5) via a connecting frame (51). A connecting hole (52) adapted to the connecting piece and the positioning piece is provided on the side of the connecting frame (51), and a mounting hole (54) is provided in the middle of the side of the circular plate (53).

2. The double-wheel connection mechanism for adjusting the narrow wheelbase of a tractor according to claim 1, characterized in that: The connecting member comprises a first bolt (6) located in a connecting hole (52) on a side surface of the first load-bearing wheel (41); a nut (61) for positioning the first bolt (6) is provided on a side surface of the hub flange (3); a connecting block (7) is fixed to a side surface of the first bolt (6); and a connecting thread groove (71) is provided on a side surface of the connecting block (7).

3. The double-wheel connection mechanism for adjusting the narrow wheelbase of a tractor according to claim 2, characterized in that: The positioning member comprises a second bolt (9) located in a connecting hole (52) on the side of the second load-bearing wheel (42), and the second bolt (9) is adapted to a connecting thread groove (71) on the side of the connecting block (7).

4. The double-wheel connection mechanism for adjusting the narrow wheelbase of a tractor according to claim 3, characterized in that: The connecting member further comprises a positioning shaft (8) fixed to the side of the hub flange (3), and the positioning shaft (8) is located in a mounting hole (54) on the side of the circular plate (53) of the first load-bearing wheel (41), and a key slot (55) is provided on the side of the mounting hole (54), and a key (81) is fixed to the side of the positioning shaft (8) and is engaged in the key slot (55).

5. The double-wheel connection mechanism for adjusting the narrow wheelbase of a tractor according to claim 4, characterized in that: A positioning thread groove (82) is formed at one end of the positioning shaft (8), a fixed shaft (10) is disposed in a mounting hole (54) on the side of the circular plate (53) in the second load-bearing wheel (42), and a screw rod (11) is fixed to the end of the fixed shaft (10), the screw rod (11) being adapted to fit the positioning thread groove (82).

6. The double-wheel connection mechanism for adjusting the narrow wheelbase of a tractor according to claim 5, characterized in that: A first sealing plug (72) is provided on the side of the connection block (7) for sealing the connection thread groove (71), and a second sealing plug (83) is provided on the side of the positioning shaft (8) for sealing the positioning thread groove (82).

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