An adjustable variable mechanism for a hydraulic transmission

Abstract

The utility model relates to a kind of adjustable variable mechanism of pressure transmission, including swash plate and fixedly arranged fixed plate on swash plate, the output shaft of the swash plate is provided with sleeve shaft, the sleeve shaft is sequentially provided with first paddle, torsional spring, second paddle from below to above, the first paddle and second paddle are all provided with opening slot, and first paddle and second paddle are reversely arranged, the side of the adjusting paddle is provided with lever, the opening slot on the first paddle and second paddle is all connected with lever, the side of the fixed plate is also equipped with limit component.

Description

Technical Field

[0001] This utility model belongs to the field of transmission equipment technology, and relates to an adjustable variable mechanism for a hydraulic transmission. Background Technology

[0002] Axial piston pumps are divided into two categories: swashplate type and swashplate type. Swashplate type axial piston pumps use a variable displacement mechanism to change the size and direction of the swashplate angle to control the magnitude of the piston's reciprocating stroke, thereby changing the pump's output flow rate and suction / discharge direction. Traditional variable displacement mechanisms primarily use valve-controlled piston systems, and due to the compressibility of hydraulic oil, precise control is difficult to achieve when controlling the variable displacement. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an adjustable variable mechanism for a hydraulic transmission.

[0004] The objective of this utility model can be achieved through the following technical solution: An adjustable variable mechanism for a hydraulic transmission includes a swashplate and a fixed plate fixedly mounted on the swashplate. A sleeve shaft is provided on the output shaft of the swashplate. From bottom to top, the sleeve shaft is provided with an adjusting paddle, a first paddle, a torsion spring, and a second paddle. Both the first and second paddles have opening slots, and the first and second paddles are arranged in opposite directions. A lever is provided on one side of the adjusting paddle. The opening slots on the first and second paddles are engaged with the lever. A limiting component is also provided on one side of the fixed plate.

[0005] In the adjustable variable mechanism of the hydraulic transmission described above, the limiting component includes a positioning adjustment shaft disposed on one side of the fixed plate, and the ends of the first and second paddles are provided with limiting grooves. The first and second paddles have opening grooves and limiting grooves, and the positioning adjustment shaft is located in the limiting grooves of the first and second paddles.

[0006] In the aforementioned adjustable variable mechanism of a hydraulic transmission, the bushing includes a connecting sleeve that can be fitted onto the swashplate output shaft. The connecting sleeve is provided with an mounting sleeve, which is coaxially arranged with the connecting sleeve. A limit block is welded to the top of the connecting sleeve, and a limit hole matching the limit block is provided on the adjusting paddle.

[0007] In the adjustable variable mechanism of the aforementioned hydraulic transmission, the positioning adjustment shaft includes a mounting shaft and an adjustment pin disposed on the mounting shaft, wherein the adjustment pin is eccentrically disposed with respect to the mounting shaft.

[0008] In the adjustable variable mechanism of the aforementioned hydraulic transmission, a locking ring is also provided on the top of the mounting sleeve.

[0009] This invention features a simple structure, accurate center positioning, convenient adjustment, and strong reset force, enabling precise center position control. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded schematic diagram of this utility model.

[0011] In the diagram, 1. Swashplate; 2. Fixing plate; 3. Sleeve shaft; 31. Connecting sleeve; 32. Mounting sleeve; 33. Limiting block; 4. First lever; 5. Torsion spring; 6. Second lever; 7. Opening slot; 8. Lever; 9. Limiting assembly; 10. Positioning adjustment shaft; 101. Mounting shaft; 102. Adjusting pin; 11. Limiting groove; 12. Limiting hole; 13. Clamping ring; 14. Adjusting lever. Detailed Implementation

[0012] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example

[0013] like Figures 1 to 2 As shown, an adjustable variable mechanism for a hydraulic transmission includes a swashplate 1 and a fixed plate 2 fixedly mounted on the swashplate 1. A sleeve shaft 3 is provided on the output shaft of the swashplate 1. From bottom to top, the sleeve shaft 3 is provided with an adjusting paddle 14, a first paddle 4, a torsion spring 5, and a second paddle 6. Both the first paddle 4 and the second paddle 6 have opening slots 7, and the first paddle 4 and the second paddle 6 are arranged in opposite directions. A lever 8 is provided on one side of the adjusting paddle 14, and the opening slots 7 on the first paddle 4 and the second paddle 6 are engaged with the lever 8.

[0014] The bushing includes a connecting sleeve 31 that can be fitted onto the output shaft of the swashplate 1. A mounting sleeve 32 is provided on the connecting sleeve 31, and the mounting sleeve 32 is coaxially arranged with the connecting sleeve 31. A limiting block 33 is welded to the top of the connecting sleeve 31, and a limiting hole 12 matching the limiting block 33 is provided on the adjusting lever 14. In this embodiment, both the limiting block 33 and the limiting hole 12 are rectangular, allowing the adjusting lever 14 to engage with the limiting block 33. This enables the bushing shaft 3 to better drive the adjusting lever 14 to rotate when it rotates at a certain angle.

[0015] A limiting component 9 is also provided on one side of the fixed plate 2. The limiting component 9 includes a positioning adjustment shaft 10 disposed on one side of the fixed plate 2. The bottom of the positioning adjustment shaft 10 is fixedly mounted on the fixed plate 2 by bolts. The positioning adjustment shaft 10 includes a mounting shaft 101 and an adjusting pin 102 disposed on the mounting shaft 101. The adjusting pin 102 is eccentrically positioned relative to the mounting shaft 101. By eccentrically positioning the adjusting pin 102 relative to the mounting shaft 101, the position of the adjusting pin 102 can change when the mounting shaft 101 rotates, thereby adjusting the initial angle of the swashplate 1.

[0016] The ends of the first paddle 4 and the second paddle 6 are provided with limiting grooves 11, the opening grooves 7 and the limiting grooves 11 on the first paddle 4 and the second paddle 6, and the positioning adjustment shaft 10 is located in the limiting grooves 11 of the first paddle 4 and the second paddle 6.

[0017] The top of the mounting sleeve 32 is also provided with a clamping ring 13. The clamping ring 13 can longitudinally limit the various components on the sleeve shaft 3 to prevent them from falling off the sleeve shaft 3.

[0018] Working principle: In the initial position, swashplate 1 is in the neutral position. Due to the bidirectional action of torsion spring 5, it remains neutral. When it is necessary to change the angle of swashplate 1, the adjusting lever 14 can drive the first lever 4 or the second lever 6 to rotate. Both the first lever 4 and the second lever 6 have opening slots 7, and the two levers are in opposite directions. The shaft of swashplate 1 rotates together with one of the levers, while the other lever is fixed by the adjusting pin 102, preventing the other end of the torque spring from being tightened, until the maximum position is reached to complete the change in one direction. When the change stops, the torque spring returns it to its original position. The same applies to the opposite direction.

[0019] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An adjustable variable mechanism for a hydraulic transmission, comprising a swashplate and a fixed plate fixedly mounted on the swashplate, characterized in that, The output shaft of the swashplate is provided with a sleeve shaft, and the sleeve shaft is provided with an adjusting paddle, a first paddle, a torsion spring, and a second paddle from bottom to top. The first paddle and the second paddle are both provided with opening slots and are arranged in opposite directions. A lever is provided on one side of the adjusting paddle, and the opening slots on the first paddle and the second paddle are engaged with the lever. A limiting component is also provided on one side of the fixing plate.

2. The adjustable variable mechanism of a hydraulic transmission according to claim 1, characterized in that: The limiting component includes a positioning adjustment shaft disposed on one side of the fixed plate, and the ends of the first and second paddles are provided with limiting grooves. The first and second paddles have opening grooves and limiting grooves, and the positioning adjustment shaft is located in the limiting grooves of the first and second paddles.

3. The adjustable variable mechanism of a hydraulic transmission according to claim 2, characterized in that: The bushing includes a connecting sleeve that can be fitted onto the output shaft of the swashplate. The connecting sleeve is provided with an mounting sleeve, which is coaxially arranged with the connecting sleeve. A limit block is welded to the top of the connecting sleeve, and a limit hole matching the limit block is provided on the adjusting shank.

4. The adjustable variable mechanism of a hydraulic transmission according to claim 3, characterized in that: The positioning adjustment shaft includes a mounting shaft and an adjustment pin disposed on the mounting shaft, wherein the adjustment pin is eccentrically disposed with respect to the mounting shaft.

5. The adjustable variable mechanism of a hydraulic transmission according to claim 4, characterized in that: The top of the mounting sleeve is also provided with a locking ring.

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