Clutch mechanical power-assisted mechanism
Through the spring elastic design, the mechanical structure of the reset torsion spring and return spring is used to solve the problem of high and unstable cost of the agricultural tractor clutch assist structure, and achieves a simple, reliable, easy to maintain and low cost clutch assist effect.
Patent Information
- Application Number
- CN202422374240.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The clutch assist structure of existing agricultural tractors has high cost, complex structure and unstable assist process, making it difficult to meet the driver's operating needs.
The spring force is used to assist the clutch gear, and the auxiliary reset and stable assist of the clutch pedal is achieved through the mechanical structure design of the reset torsion spring and the return spring.
It realizes a clutch assisting process with simple and reliable structure, convenient assembly, easy maintenance and low cost, which helps the process to be stable and reduces the occurrence of faults.
Smart Images
Figure CN223085841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of agricultural machinery, and in particular to a clutch mechanical power-assisting mechanism. Background Art
[0002] The tractor needs to step on the clutch when shifting gears. Since the clutch is heavy, frequent gear shifting during operation is not friendly to the driver. Tractors on the market generally need to assist the clutch, and mainstream manufacturers use hydraulic pumps for assistance. The disadvantages are high cost, complicated structure layout, and easy problems. There are setbacks in the power-assisting process, and the pedaling force is very large at the beginning of the power-assisting process. The mechanical power-assisting structure uses the elastic force of the spring to assist the clutch shifting process. It has the advantages of simple and reliable structure, easy assembly, easy maintenance, low cost and smooth power-assisting process. The existing clutch mechanical power-assisting structure of agricultural tractors is generally less used. Utility Model Content
[0003] The purpose of the utility model is to provide a clutch mechanical assist mechanism, which utilizes the elastic force of a spring to assist the clutch shifting process, is easy to assemble, easy to maintain, and has low cost; and the assisting process is stable.
[0004] The utility model is realized by the following technical solutions:
[0005] A clutch mechanical power-assisting mechanism comprises a mounting base plate, on which a power-assisting bracket is symmetrically arranged, on which a clutch pedal is rotatably mounted via a support shaft, a reset torsion spring is arranged on the rotating shaft of the clutch pedal, one end of the reset torsion spring is mounted on the power-assisting bracket, and the other end of the reset torsion spring is mounted on the main arm of the clutch pedal, and the clutch pedal is also provided with an auxiliary arm, which is reset by an auxiliary reset mechanism.
[0006] Furthermore, the auxiliary reset mechanism includes a reset sleeve and a support arm, the support arm is hingedly connected to the mounting seat on the mounting seat plate, the reset sleeve is slidably arranged outside the support arm and is slidably limited by a limiting structure, a hinged ear is provided at the front end of the reset sleeve, a long hole I is provided on the hinged ear, and the auxiliary arm is installed on the long hole I through a pin shaft; a reset spring is provided between the reset sleeve and the support arm.
[0007] Furthermore, the limiting structure includes an elongated hole II provided at the bottom of the reset sleeve and a pin hole provided on the support arm. The elongated hole II and the pin hole cooperate with each other through a pin shaft to control the movable range of the reset sleeve on the support arm.
[0008] Furthermore, a limiting column is provided at the front end of the support arm, a reset spring is installed outside the limiting column, one end of the reset spring abuts against the table surface of the support arm, and the other end of the reset spring abuts against the step in the reset sleeve.
[0009] Further, a limit card slot is provided on the main arm, and one end of the return torsion spring is installed in the limit card slot.
[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0011] 1. By setting the mechanical structures of the return torsion spring and the return spring, the structure is simple and reliable, effectively solving the problem of high cost of hydraulic assistance.
[0012] 2. It is convenient for the layout of structural pipelines and reduces the occurrence of problems.
[0013] 3. The elastic force of the spring is used to assist the process of engaging and disengaging the clutch. It is convenient for assembly, easy to repair, and has a low cost; the assistance process is stable. Description of the Drawings
[0014] Figure 1 is a schematic structural diagram of the utility model;
[0015] Figure 2 is a cross-sectional view of the auxiliary return mechanism of the utility model.
[0016] In the figure: 1, mounting seat plate; 2, assistance bracket; 3, return sleeve; 4, support arm; 5, pin hole; 6, long hole II; 7, main arm; 8, long hole I; 9, return torsion spring; 10, limit card slot; 11, support shaft; 12, auxiliary arm; 13, limit post; 14, return spring. Specific Embodiments
[0017] The following further describes and illustrates the utility model with reference to the drawings.
[0018] Embodiment 1
[0019] As Figure 1 shown, a clutch mechanical assistance mechanism includes a mounting seat plate 1, and assistance brackets 2 are symmetrically provided on the mounting seat plate 1. The assistance brackets 2 are rotatably installed with a clutch pedal (this specific structure is prior art and will not be elaborated) through a support shaft 11; a return torsion spring 9 is provided on the rotating shaft of the clutch pedal. One end of the return torsion spring 9 is installed on the assistance bracket 2, and the other end of the return torsion spring 9 is installed on the main arm 7 of the clutch pedal. The clutch pedal further has an auxiliary arm 12, and the auxiliary arm 12 is reset through an auxiliary return mechanism.
[0020] Embodiment 2
[0021] As Figure 2As shown in the figure, a clutch mechanical assist mechanism, the auxiliary reset mechanism includes a reset sleeve 3 and a support arm 4. The support arm 4 is hinged to the mounting seat on the mounting seat plate 1. The reset sleeve 3 is slidably arranged outside the support arm 4 and is slidably limited by a limiting structure. The front end of the reset sleeve 3 is provided with a hinge ear, and a long hole Ⅰ8 is provided on the hinge ear. The auxiliary arm 12 is installed on the long hole Ⅰ8 through a pin shaft. In this hinge connection, when the auxiliary arm 12 presses down the reset sleeve 3, there is a certain amount of movement between the reset sleeve 3 and the auxiliary arm 12, so that the reset spring 14 stores energy; a reset spring 14 is arranged between the reset sleeve 3 and the support arm 4; the limiting structure includes a long hole Ⅱ6 arranged at the bottom of the reset sleeve 3 and a pin hole 5 arranged on the support arm 4. The long hole Ⅱ6 and the pin hole 5 are matched by a pin shaft to control the movement range of the reset sleeve 3 on the support arm 4; a limiting post 13 is arranged at the front end of the support arm 4, and the reset spring 14 is installed outside the limiting post 13. One end of the reset spring 14 abuts against the table surface of the support arm 4, and the other end of the reset spring 14 abuts against the step inside the reset sleeve 3; a limiting card slot 10 is arranged on the main arm 7, and one end of the reset torsion spring 9 is installed in the limiting card slot 10, and the others are the same as in Embodiment 1.
[0022] When the clutch pedal is stepped on, the reset torsion spring 9 is stressed and stores energy. Then, the auxiliary arm 12 presses down and pushes the reset sleeve 3 downward. Finally, the reset spring 14 is also stressed and stores energy. After the energy storage is completed, the free stroke of the clutch pedal is also completed. The clutch pedal continues to move downward, and the clutch starts to be stressed. Return stroke of the clutch pedal: The reset spring 14 pushes the reset sleeve 3 back, forming an angle between the reset sleeve 3 and the auxiliary arm 12 again. Then, the reset torsion spring 6 does work to reset the clutch pedal.
Claims
1. A clutch mechanical assist mechanism, including a mounting seat plate (1), on which assist brackets (2) are symmetrically arranged. The assist brackets (2) are rotatably mounted with a clutch pedal through a support shaft (11), and it is characterized in that: A return torsion spring (9) is provided on the rotating shaft of the clutch pedal. One end of the return torsion spring (9) is mounted on the boosting bracket (2), and the other end of the return torsion spring (9) is mounted on the main arm (7) of the clutch pedal. The clutch pedal further comprises an auxiliary arm (12), and the auxiliary arm (12) is reset by an auxiliary reset mechanism.
2. The clutch mechanical assistance mechanism according to claim 1, characterized in that: The auxiliary reset mechanism comprises a reset sleeve (3) and a support arm (4). The support arm (4) is hingedly connected to a mounting seat on the mounting seat plate (1). The reset sleeve (3) is slidably disposed outside the support arm (4) and is slidably limited by a limiting structure. A hinge ear is provided at the front end of the reset sleeve (3), and a long hole Ⅰ (8) is provided on the hinge ear. The auxiliary arm (12) is mounted on the long hole Ⅰ (8) through a pin shaft; a return spring (14) is provided between the reset sleeve (3) and the support arm (4).
3. The clutch mechanical assist mechanism according to claim 2, wherein: The limiting structure comprises a long hole Ⅱ (6) provided at the bottom of the reset sleeve (3) and a pin hole (5) provided on the support arm (4), and the long hole Ⅱ (6) and the pin hole (5) are matched by a pin shaft.
4. The clutch mechanical assist mechanism according to claim 2, wherein: A limiting post (13) is provided at the front end of the support arm (4), and the return spring (14) is mounted outside the limiting post (13). One end of the return spring (14) abuts against the table top of the support arm (4), and the other end of the return spring (14) abuts against a step inside the reset sleeve (3).
5. The clutch mechanical assist mechanism according to claim 1, wherein: A limiting card slot (10) is provided on the main arm (7), and one end of the return torsion spring (9) is mounted in the limiting card slot (10).