Shifting fork structure of gearbox

Abstract

The shifting fork structure of the gearbox comprises a shifting fork shaft assembly, a limiting assembly is arranged on the outer wall of the shifting fork shaft assembly, two sets of clamping mechanisms in sliding fit with the limiting assembly are arranged on the limiting assembly, each set of clamping mechanisms is symmetrically provided with two clamping mechanisms, each set of clamping mechanisms is fixedly provided with a shifting fork body in a clamping mode, and the shifting fork body is arranged on the limiting assembly. The two shifting fork bodies are both in sliding fit with the shifting fork shaft assembly. By arranging the limiting assembly and the clamping mechanism, the clamping mechanism clamps and limits the shifting fork body, and the clamping mechanism is in sliding fit with the limiting assembly, so that the shifting fork body is higher in moving stability, the shifting fork is prevented from shaking during moving, the shifting fork body does not need to be transformed, and the practicability of the structure is high; and through the arranged pulling and inserting shaft assembly, limiting on the limiting assembly can be quickly relieved, clamping and locking of the clamping mechanism on the shifting fork body can be relieved, the shifting fork body can be replaced and maintained, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a shift fork structure of a gearbox. Background Art

[0002] Devices for changing the speed ratio and direction of movement are used in automobiles, tractors, ships, machine tools and various machines to change the torque, speed and direction of movement transmitted from the driving shaft to the driven shaft according to different working conditions. A gearbox generally consists of a housing and several gear pairs. The gearbox shift fork mechanism is a device for adjusting the gear position inside the gearbox, but existing gearboxes cannot meet people's needs.

[0003] Although the existing shift fork structure can switch gears when in use, it is prone to shaking when shifting gears, causing abnormal noise in the transmission and gear rattling. In addition, the shift fork is not easy to disassemble and replace when it needs to be repaired, which reduces maintenance efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, one of the purposes of the present invention is to provide a gearbox fork structure, which uses a limit assembly and a clamping mechanism to clamp and limit the fork body. Since the clamping mechanism slides with the limit assembly, the movement stability of the fork body is stronger, and shaking of the fork is avoided when the fork moves. There is no need to modify the fork body, and the structure is highly practical. Through the plug-in shaft assembly, the limit of the limit assembly can be quickly released, the clamping lock of the fork body by the clamping mechanism can be released, and the fork body can be replaced and repaired, thereby improving maintenance efficiency.

[0005] One of the objectives of the present invention is achieved by the following technical solution: a shift fork structure of a gearbox, comprising: a shift fork shaft assembly, a limit assembly provided on the outer wall of the shift fork shaft assembly, two sets of clamping mechanisms slidingly engaged with the limit assembly, each set of the clamping mechanisms being symmetrically provided with two, each set of the clamping mechanisms clamping and fixing a shift fork body, and the two shift fork bodies both slidingly engaging with the shift fork shaft assembly;

[0006] The shift fork shaft assembly includes a shaft body, an end portion, and a screw. Both ends of the shaft body are provided with a protrusion, one end of the end portion is provided with a socket, one end of the protrusion is provided with a screw hole, and the side walls of the end portion are provided with a socket, the socket and the screw hole are positioned correspondingly, and the outer wall of the screw passes through the socket and is threadedly connected to the inner wall of the screw hole;

[0007] The limit assembly includes fixed blocks arranged symmetrically on both sides, each having a through-hole extending through its front wall. Two limit rods are fixedly connected between the opposing surfaces of the two fixed blocks. The limit assembly and clamping mechanism are provided, and the clamping mechanism clamps and limits the fork body. Because the clamping mechanism slides with the limit assembly, the fork body is more stable during movement, preventing shaking during movement. The structure is highly practical without requiring modification to the fork body. The plug-in / plug-out shaft assembly allows for quick release of the limit assembly, releasing the clamping lock on the fork body by the clamping mechanism, allowing replacement and repair of the fork body, improving maintenance efficiency.

[0008] According to the shift fork structure of a gearbox, the clamping mechanism includes a top plate, the bottom end of the top plate is fixedly connected to a fixed clamping plate, the bottom end of the top plate is provided with a slide groove, the inner side wall of the slide groove is slidably connected to a movable clamping plate, the left inner wall of the slide groove is rotatably connected to an adjusting bolt, the outer side wall of the adjusting bolt is rotatably connected to the right wall of the movable clamping plate, and the movable clamping plate and the side wall of the movable clamping plate are both provided with sliding holes.

[0009] According to the shift fork structure of the gearbox, the inner side wall of the sliding hole is slidably connected to the outer side wall of the limiting rod.

[0010] A shift fork structure of a gearbox is provided, wherein the inner side walls of the through holes are slidably connected to the outer side walls of the shaft body.

[0011] According to the shift fork structure of a gearbox, the two fixing blocks are located between the two end portions.

[0012] According to the shift fork structure of the gearbox, the inner wall of the ring hole of the shift fork body is slidably connected to the inner side wall of the shaft body.

[0013] According to the shift fork structure of the gearbox, rubber pads are fixedly mounted on the inner walls of both sides of the shift fork body.

[0014] According to the shift fork structure of the gearbox, the clamping surfaces of the movable clamping plate and the fixed clamping plate are in contact with the left and right side walls of the shift fork body.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a three-dimensional diagram of a shift fork structure of a gearbox according to the present invention;

[0018] Figure 2 This is a structural diagram of a shift fork shaft assembly of a shift fork structure of a gearbox according to the present invention;

[0019] Figure 3 This is a three-dimensional diagram of a limit assembly of a shift fork structure of a gearbox according to the present invention;

[0020] Figure 4 This is a three-dimensional diagram of a clamping mechanism of a shift fork structure of a gearbox according to the present invention.

[0021] Legend:

[0022] 1. Shift fork shaft assembly; 2. Shift fork body; 3. Limit assembly; 4. Clamping mechanism; 101. Shaft; 1011. Protrusion; 1012. Screw hole; 102. End; 1021. Socket; 103. Screw; 301. Fixing block; 3011. Through hole; 302. Limit rod; 401. Top plate; 4011. Slide groove; 402. Fixed clamping plate; 403. Movable clamping plate; 404. Slide hole; 405. Adjusting bolt. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0024] Reference Figure 1-4 The present invention provides a shift fork structure of a gearbox, which includes: a shift fork shaft assembly 1, a limit assembly 3 provided on the outer wall of the shift fork shaft assembly 1, two sets of clamping mechanisms 4 slidingly matched therewith are provided on the limit assembly 3, each set of clamping mechanisms 4 is symmetrically provided with two, each set of clamping mechanisms 4 clamps and fixes a shift fork body 2, rubber pads are fixedly installed on the inner walls of both sides of the shift fork body 2, and the two shift fork bodies 2 are both slidingly matched with the shift fork shaft assembly 1;

[0025] The fork shaft assembly 1 includes a shaft body 101, an end portion 102, and a screw 103. The inner wall of the ring hole of the fork body 2 is slidably connected to the inner side wall of the shaft body 101. Both ends of the shaft body 101 are provided with a protrusion 1011. One end of the end portion 102 is provided with a socket 1021. One end of the protrusion 1011 is provided with a screw hole 1012. The side wall of the end portion 102 is provided with a socket 1021. The position of the socket 1021 corresponds to the position of the screw hole 1012. The outer wall of the screw 103 passes through the socket 1021 and is threadedly connected to the inner wall of the screw hole 1012.

[0026] The limiting assembly 3 includes fixed blocks 301 arranged symmetrically on both sides. The two fixed blocks 301 are located between the two end portions 102. A through hole 3011 is formed through the front wall of each fixed block 301. The inner side walls of the through holes 3011 are slidably connected to the outer side walls of the shaft body 101. Two limiting rods 302 are fixedly connected between the opposing surfaces of the two fixed blocks 301.

[0027] The clamping mechanism 4 includes a top plate 401, the bottom end of the top plate 401 is fixedly connected to a fixed clamping plate 402, the bottom end of the top plate 401 is provided with a slide groove 4011, the inner side wall of the slide groove 4011 is slidably connected with a movable clamping plate 403, the clamping surfaces of the movable clamping plate 403 and the fixed clamping plate 403 are in contact with the left and right side walls of the fork body 2, the left inner wall of the slide groove 4011 is rotatably connected with an adjusting bolt 405, the outer side wall of the adjusting bolt 405 is rotatably connected with the right wall of the movable clamping plate 403, the movable clamping plate 403 and the side wall of the movable clamping plate 403 are both provided with a slide hole 404, the inner side wall of the slide hole 404 is slidably connected with the outer side wall of the limit rod 302. When the fork body 2 is disassembled and repaired, the fork shaft assembly 1 is disassembled and repaired by rotating the loose screw 103 to release the lock between the shaft 101 and the end 102, and the end 102 protrusion 1011 is removed, the limit of the limit assembly 3 can be released and it can be slid out. In the next step, the clamping lock of the fork body 2 by the clamping mechanism 4 is released, and the fork body 2 can be replaced and repaired, thereby improving the maintenance efficiency.

[0028] Working principle: Before use, first clamp the fork body 2 with the clamping mechanism 4 to limit the position, rotate the adjusting bolt 405 to cooperate with the slide groove 4011 to limit and drive the movable clamping plate 403 to move, and cooperate with the fixed clamping plate 402 to clamp and fix the fork body 2. Next, install the limit assembly 3 and the fork body 2 on the shaft body 101 together to complete the installation of the fork structure. Because the clamping mechanism 4 is slidably matched with the limit rod 302, the fork body 2 moves on the shaft body 101 and the limit rod 302, ensuring the horizontal movement of the fork body 2 and the stability of the fork body 2, avoiding shaking when the fork moves, and no modification of the fork body 2 is required. The structure is highly practical.

[0029] When disassembling and repairing the fork body 2, the screw 103 is loosened to release the lock between the shaft 101 and the end 102, and the protrusion 1011 of the end 102 is removed to release the limit of the limit assembly 3 and slide it out. Next, the clamping lock of the clamping mechanism 4 on the fork body 2 is released, and the fork body 2 can be replaced and repaired, which improves the maintenance efficiency.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A shift fork structure of a gearbox, comprising: A shift fork shaft assembly (1) is characterized in that a limit assembly (3) is provided on the outer wall of the shift fork shaft assembly (1), and two groups of clamping mechanisms (4) that are slidably matched with the limit assembly (3) are provided on the limit assembly (3), and each group of the clamping mechanisms (4) is symmetrically provided with two, and each group of the clamping mechanisms (4) clamps and fixes a shift fork body (2), and the two shift fork bodies (2) are slidably matched with the shift fork shaft assembly (1); The shift fork shaft assembly (1) comprises a shaft body (101), an end portion (102), and a screw (103); both ends of the shaft body (101) are provided with protrusions (1011); one end of the end portion (102) is provided with a socket (1021); one end of the protrusion (1011) is provided with a screw hole (1012); the side wall of the end portion (102) is provided with a socket (1021); the socket (1021) corresponds to the position of the screw hole (1012); the outer wall of the screw (103) passes through the socket (1021) and is threadedly connected to the inner wall of the screw hole (1012); The limiting assembly (3) comprises fixed blocks (301) arranged symmetrically on both sides, the front walls of the fixed blocks (301) are each provided with a through hole (3011), and two limiting rods (302) are fixedly connected between the opposite surfaces of the two fixed blocks (301).

2. The shift fork structure of a gearbox according to claim 1, characterized in that: The clamping mechanism (4) includes a top plate (401), the bottom end of the top plate (401) is fixedly connected to a fixed clamping plate (402), the bottom end of the top plate (401) is provided with a slide groove (4011), the inner side wall of the slide groove (4011) is slidably connected to a movable clamping plate (403), the left inner wall of the slide groove (4011) is rotatably connected to an adjusting bolt (405), the outer side wall of the adjusting bolt (405) is rotatably connected to the right wall of the movable clamping plate (403), and the side walls of the movable clamping plate (403) and the fixed clamping plate (402) are both provided with sliding holes (404).

3. The shift fork structure of a gearbox according to claim 2, characterized in that: The inner side wall of the sliding hole (404) is slidably connected to the outer side wall of the limiting rod (302).

4. The shift fork structure of a gearbox according to claim 1, characterized in that: The inner side walls of the through holes (3011) are slidably connected to the outer side walls of the shaft body (101).

5. The shift fork structure of a gearbox according to claim 1, characterized in that: The two fixing blocks (301) are located between the two end portions (102).

6. The shift fork structure of a gearbox according to claim 1, characterized in that: The inner wall of the ring hole of the fork body (2) is slidably connected to the inner side wall of the shaft body (101).

7. The shift fork structure of a gearbox according to claim 6, characterized in that: Rubber pads are fixedly mounted on the inner walls of both sides of the fork body (2).

8. The shift fork structure of a gearbox according to claim 2, characterized in that: The clamping surfaces of the movable clamping plate (403) and the fixed clamping plate (402) are in contact with the left and right side walls of the fork body (2).

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