Three-point suspension speed adjusting system of tractor
Through integrated design, the connecting rod and universal joint are integrated on the soft shaft, which solves the problems of insufficient space and numerous parts of the three-point suspension structure of the tractor, realizes large-angle torque transmission and convenient installation, and reduces costs.
Patent Information
- Application Number
- CN202422578245.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-10-24
AI Technical Summary
Due to the renovation of the tractor cab, the three-point suspension structure is insufficient, which cannot meet the problem of large-angle torque transmission and numerous parts, which is inconvenient to assemble.
The connecting rod, universal joint and other structures are integrated on the soft shaft, and the soft shaft is controlled to transmit torque by adjusting the handle to adjust the three-point suspension speed, which reduces costs.
It solves the problems of insufficient space and numerous parts, realizes large-angle torque transmission and convenient installation, and reduces overall costs.
Smart Images
Figure CN223089964U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tractors, in particular to a three-point hitch speed regulation system for a tractor. Background Technique
[0002] The three-point hitch means that there are three joints at the rear of the tractor frame to connect agricultural implements. Two of the joints are located below the frame, while the third joint is located above the rear of the frame. This connection method can improve the stability between the agricultural machinery and the vehicle, and improve the quality and efficiency of farmland operations.
[0003] Due to the replacement and transformation of the tractor cab, the space for accommodating the original three-point hitch structure (as Figure 1 shown) becomes smaller. After the external shape transformation design, the original mechanism has the following problems: (1) The adjustment space is insufficient, the vertical angle is too large, and the original connecting rod plus universal joint structure cannot meet the transmission of large-angle torque; (2) There are too many parts in the original structure. When the cab is assembled, the space with the gearbox is small, which is not convenient for assembly. Content of the Utility Model
[0004] The purpose of the utility model is to provide a three-point hitch speed regulation system for a tractor, which integrates all the original transition mechanisms into one part, facilitating installation and reducing costs at the same time.
[0005] The above technical purpose of the utility model is achieved through the following technical solutions: A three-point hitch speed regulation system for a tractor includes a vertical plate and a gearbox housing disposed in the cab. An adjustment handle is provided on the vertical plate, and a regulating valve is provided on the gearbox housing. The regulating valve is fixedly connected with a flexible shaft through a shaft sleeve, and one end of the flexible shaft away from the regulating valve is fixedly connected with the adjustment handle through a screw.
[0006] By adopting the above technical solutions, the rotation of the flexible shaft is controlled by controlling the adjustment handle. The flexible shaft transmits torque to control the regulating valve, and the flow rate of the gearbox is controlled by the regulating valve to achieve the adjustment speed of the three-point hitch.
[0007] The further setting of the utility model is: A lock head bracket welding assembly is fixedly connected to the vertical plate. The flexible shaft passes through a threaded sleeve and is fixedly connected with the adjustment handle. The threaded sleeve is fixed to the lock head bracket welding assembly through a nut and a gasket.
[0008] The further setting of the utility model is: The threaded sleeve is threadedly connected with two nuts respectively located on both sides of the lock head bracket welding assembly, and the gasket is disposed between the nut and the lock head bracket welding assembly.
[0009] The further setting of the utility model is: The shaft sleeve is fixedly connected with the regulating valve through a locknut.
[0010] A further setting of the present utility model is that the adjusting handle is inclined and faces the driver's seat.
[0011] By adopting the above technical solution, it is convenient for the driver to control the adjusting handle.
[0012] A further setting of the present utility model is that holes are provided on the vertical plate, and the flexible shaft passes through the holes.
[0013] The beneficial effects of the present utility model are:
[0014] 1. Compared with the original control structure, the present utility model integrates the connecting rod, universal joint, and shaft sleeve into a flexible shaft control. It not only solves the problem that the original structure cannot be adjusted due to too large an angle, but also integrates multiple parts, facilitating subsequent inspection and maintenance, and reducing the overall cost. The price of the universal joint in the original structure is higher than the price of the entire flexible shaft.
[0015] 2. The installation of the welded lock head bracket in the present utility model also solves the problem that the operation instruction label cannot be pasted. Solving multiple problems through the reform of one structure improves the economy of the structure; at the same time, the flexible shaft has high flexibility and strong adjustability during installation, facilitating the tightening process after installation in the cab. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0017] Figure 1 It is a schematic diagram of the structure of the original three-point suspension system.
[0018] Figure 2 It is a schematic diagram of the structure of the present utility model.
[0019] In the figure, 1. Vertical plate; 2. Transmission housing; 3. Adjusting handle; 4. Control valve; 5. Shaft sleeve; 6. Flexible shaft; 7. Screw; 8. Welded lock head bracket assembly; 9. Threaded sleeve; 10. Nut; 11. Gasket; 12. Back cap nut. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following will clearly and completely describe the technical solutions of the present utility model in combination with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0021] Embodiment: Please refer to Figure 2 , a three-point hitch speed adjustment system for a tractor, which includes a vertical plate 1 arranged in the cab and a transmission housing 2. An adjustment handle 3 is arranged on the vertical plate 1, and a regulating valve 4 is arranged on the transmission housing 2. The regulating valve 4 is fixedly connected with a flexible shaft 6 through a bushing 5. One end of the flexible shaft 6 away from the regulating valve 4 is fixedly connected with the adjustment handle 3 through a screw 7. A lock head support welding assembly 8 is fixedly connected to the vertical plate 1. The flexible shaft 6 passes through a threaded sleeve 9 and is fixedly connected with the adjustment handle 3. The threaded sleeve 9 is fixed to the lock head support welding assembly 8 through a nut 10 and a gasket 11. The threaded sleeve 9 is threadedly connected with two nuts 10 respectively located on both sides of the lock head support welding assembly 8. The gasket 11 is arranged between the nut 10 and the lock head support welding assembly 8. The bushing 5 is fixedly connected with the regulating valve 4 through a lock nut 12. The adjustment handle 3 is obliquely arranged, and the adjustment handle 3 faces the driver's seat. A hole is formed in the vertical plate 1, and the flexible shaft 6 penetrates through the hole.
[0022] By controlling the adjustment handle 3, the flexible shaft 6 is rotated. The flexible shaft 6 transmits torque to control the regulating valve 4, and the flow rate of the transmission is controlled by the regulating valve 4 to realize the three-point hitch adjustment speed.
Claims
1. A three-point hitch speed adjustment system for a tractor, comprising a vertical plate (1) and a transmission housing (2) arranged in the cab, characterized in that: An adjusting handle (3) is provided on the vertical plate (1). A regulating valve (4) is provided on the gearbox housing (2). The regulating valve (4) is fixedly connected to a flexible shaft (6) through a bushing (5). One end of the flexible shaft (6) away from the regulating valve (4) is fixedly connected to the adjusting handle (3) by a screw (7).
2. The three-point hitch speed adjustment system for a tractor according to claim 1, characterized in that: A lock head bracket welding assembly (8) is fixedly connected to the vertical plate (1). The flexible shaft (6) passes through a threaded sleeve (9) and is fixedly connected to the adjusting handle (3). The threaded sleeve (9) is fixed to the lock head bracket welding assembly (8) by a nut (10) and a gasket (11).
3. A three-point hitch speed adjustment system for a tractor according to claim 2, characterized in that: The threaded sleeve (9) is threadedly connected with two nuts (10) respectively located on both sides of the lock head bracket welding assembly (8). The gasket (11) is arranged between the nut (10) and the lock head bracket welding assembly (8).
4. A three-point hitch speed adjustment system for a tractor according to claim 1, characterized in that: The bushing (5) is fixedly connected to the regulating valve (4) by a locknut (12).
5. A three-point hitch speed adjustment system for a tractor according to claim 1, characterized in that: The adjusting handle (3) is obliquely arranged and faces the driver's seat.
6. A three-point hitch speed adjustment system for a tractor according to claim 4, characterized in that: A hole is formed in the vertical plate (1), and the flexible shaft (6) penetrates through the hole.