Adjustable variable mechanism of novel hydraulic transmission

Abstract

The invention relates to an adjustable variable mechanism of a novel hydraulic transmission, which comprises an adjuster shell and is characterized in that a gear shaft is arranged on the adjuster shell, a driving lever is arranged at one end of the gear shaft, and the other end of the gear shaft is connected with an output shaft of a swash plate; an adjusting structure is arranged in the adjustor shell, the adjusting structure is used for adjusting the swash plate back to the middle position after the shifting rod is released, the adjusting structure comprises an adjusting sleeve arranged in the adjustor shell, a gear cylinder meshed with the gear shaft is arranged in the adjusting sleeve, and when the gear shaft rotates, the swash plate can be adjusted back to the middle position through the gear cylinder. The tooth cylinder can slide in the adjusting sleeve under the driving of the gear shaft, the adjusting mechanism further comprises a rebounding assembly for resetting the tooth cylinder, and the adjusting mechanism is compact in structure, accurate in middle position positioning, convenient to adjust and large in resetting force. The angle of the swash plate can be adjusted by controlling the deflector rod, after the deflector rod is released, the reset spring can control the swash plate to return to the middle position, and position control is accurate.

Description

Technical Field

[0001] This invention belongs to the field of transmission equipment technology and relates to a novel adjustable variable mechanism for hydraulic transmissions. Background Technology

[0002] Axial piston pumps are divided into two categories: swashplate type and swashplate type. Swashplate type axial piston pumps control the piston's reciprocating stroke by changing the swashplate angle and direction using a variable displacement mechanism, thereby altering the pump's output flow rate and suction / discharge direction. Traditional variable displacement mechanisms primarily use valve-controlled pistons, and due to the compressibility of hydraulic oil, precise control is difficult to achieve when manipulating the variable displacement. Summary of the Invention

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

[0004] The objective of this invention can be achieved through the following technical solution: A novel adjustable variable mechanism for a hydraulic transmission, comprising an adjuster housing, characterized in that a gear shaft is provided on the adjuster housing, one end of the gear shaft is provided with a lever, and the other end is connected to the output shaft of the swashplate; an adjusting structure is provided inside the adjuster housing, which is used to adjust the swashplate back to the neutral position after the lever is released; the adjusting structure includes an adjusting sleeve provided inside the adjuster housing, and a gear cylinder meshing with the gear shaft is provided inside the adjusting sleeve; when the gear shaft rotates, the gear cylinder can slide within the adjusting sleeve under the drive of the gear shaft; and a spring-loaded component for resetting the gear cylinder is also included.

[0005] In the adjustable variable mechanism of the novel hydraulic transmission described above, the spring return assembly includes a spring cover fixedly installed at the rear end of the adjuster housing, a spring adjustment sleeve is provided inside the spring cover, a shim is provided on one side of both the spring adjustment sleeve and the adjustment sleeve, a return spring is provided between the two shims, and an adjusting screw is also included, one end of the adjusting screw passing through the shim and fixedly connected to the gear cylinder.

[0006] In the adjustable variable mechanism of the novel hydraulic transmission described above, the gear cylinder is provided with a groove, and teeth that mesh with the gear shaft are provided on the horizontal surface of the groove.

[0007] In the adjustable variable mechanism of the novel hydraulic transmission described above, the regulator housing has a transverse through hole extending through both ends, and the regulator housing has a longitudinal through hole communicating with the transverse through hole. One end of the gear shaft passes through the longitudinal through hole and is connected to the swashplate.

[0008] In the adjustable variable mechanism of the novel hydraulic transmission described above, a position adjusting screw is engaged with one side of the transverse through hole. One end of the adjusting sleeve is limited by the position adjusting screw, and the other end is pushed by the elastic force of the reset spring on the gasket so that one end of the adjusting sleeve is always pressed against the position adjusting screw.

[0009] In the adjustable variable mechanism of the novel hydraulic transmission described above, a spring adjusting bolt is threadedly connected to the rear end of the spring cover, and one end of the spring adjusting bolt abuts against the adjusting spring adjusting sleeve.

[0010] Compared with the prior art, the present invention has a compact structure, accurate center positioning, convenient adjustment, large reset force, and can achieve precise center position control. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This is a structural diagram of the gear shaft of the present invention.

[0012] In the diagram, 1. Regulator housing; 2. Gear shaft; 3. Lever; 4. Swashplate; 5. Adjustment structure; 51. Adjustment sleeve; 52. Gear cylinder; 53. Spring cover; 54. Spring adjustment movable sleeve; 55. Shim; 56. Return spring; 57. Adjustment screw; 6. Groove; 7. Tooth; 8. Transverse through hole; 9. Longitudinal through hole; 10. Position adjustment plug; 11. Spring adjustment bolt. Detailed Implementation

[0013] 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

[0014] like Figures 1 to 3 As shown, an adjustable variable mechanism for a novel hydraulic transmission includes an adjuster housing 1 with a transverse through-hole 8 extending through both ends. The adjuster housing 1 is equipped with a gear shaft 2, one end of which is fitted with a lever 3, and the other end is connected to the output shaft of a swashplate 4. The operator adjusts the angle of the swashplate 4 by rotating the lever 3.

[0015] The regulator housing 1 has a transverse through hole 8 and a longitudinal through hole 9 connected to the transverse through hole 8.

[0016] In the initial position, the swashplate 4 is in the center position. In order for the lever 3 to return the swashplate 4 to the center position after release, an adjustment structure 5 is provided in the regulator housing. The adjustment mechanism includes an adjustment sleeve 51 provided in the transverse through hole 8. The adjustment sleeve 51 is provided with a gear cylinder 52 that meshes with the gear shaft 2. When the gear shaft 2 rotates, the gear cylinder 52 can slide in the adjustment sleeve 51 under the drive of the gear shaft 2.

[0017] The toothed cylinder 52 has a groove 6, and teeth 7 that mesh with the toothed shaft 2 are provided on the horizontal surface of the groove 6.

[0018] It also includes a spring return assembly for resetting the gear cylinder 52. The spring return assembly includes a spring cover 53 fixedly installed at the rear end of the adjuster housing 1. A spring adjusting sleeve 54 is provided inside the spring cover 53. A washer 55 is provided on one side of both the spring adjusting sleeve 54 and the adjusting sleeve 51. A reset spring 56 is provided between the two washer 55. The spring adjusting sleeve 51 can slide on the spring cover 53. A spring adjusting bolt 11 is threadedly connected to the rear end of the spring cover 53. One end of the spring adjusting bolt 11 abuts against the spring adjusting sleeve 54. When working... When it is necessary to increase the preload of the return spring 56, the operator can rotate the spring adjusting bolt 11 to push the spring adjusting sleeve 54 toward the adjusting sleeve 51. Since the end of the return spring 56 near the adjusting sleeve 51 is already limited, the spring adjusting sleeve 54 pushes the end of the return spring 56 toward the adjusting sleeve 51 to compress, thereby increasing the preload of the return spring 56. Conversely, when the operator rotates the spring adjusting bolt 11 outward, the return spring 56 can push the spring adjusting sleeve 54 outward through its elastic force, thereby reducing the preload of the return spring 56.

[0019] It also includes an adjusting screw 57, one end of which passes through a washer 55 and is fixedly connected to the gear cylinder 52.

[0020] One side of the transverse through hole 8 is fitted with a position adjusting screw plug 10. One end of the adjusting sleeve 51 is limited by the position adjusting screw plug 10, and the other end is pushed by the elastic force of the return spring 56 on the gasket 55 so that one end of the adjusting sleeve 51 is always pressed against the position adjusting screw plug 10, thereby fixing the position of the adjusting sleeve 51. When the position of the position adjusting screw plug 10 changes, the adjusting sleeve 51 can also change under the action of the elastic force of the return spring 56. Therefore, the position of the adjusting sleeve 51 can be adjusted by the position adjusting screw plug 10.

[0021] The spring cover 53 is also provided with a first through hole on one side, and a dust plug is embedded in the first through hole.

[0022] The adjustment hole is a strip-shaped hole, and there are two adjustment holes symmetrically opened on both sides of the adjustment sleeve 51.

[0023] The present invention has a simple structure and can adjust the angle of the swashplate 4 by controlling the lever 3. When the lever 3 is released, the return spring 56 can control the swashplate 4 to return to the center position. If the center position is found to be deviated, the center position can be restored by adjusting the screws 11 on both sides and adjusting the plug 10. The force of the return spring can be controlled by adjusting the screw 57, and the position control is accurate.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention 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 the invention or exceeding the scope defined by the appended claims.

Claims

1. A novel adjustable variable mechanism for a hydraulic transmission, comprising an adjuster housing (1), characterized in that, The regulator housing (1) is provided with a gear shaft (2), one end of which is provided with a lever (3), and the other end is connected to the output shaft of the swashplate (4); the regulator housing (1) is provided with an adjustment structure (5), which is used to adjust the swashplate (4) back to the center position after the lever (3) is released. The adjustment structure (5) includes an adjustment sleeve (51) provided in the regulator housing (1), and a gear cylinder (52) that meshes with the gear shaft (2) is provided in the adjustment sleeve (51). When the gear shaft (2) rotates, the gear cylinder (52) can slide in the adjustment sleeve (51) under the drive of the gear shaft (2). It also includes a spring-loaded component for resetting the gear cylinder (52).

2. The adjustable variable mechanism of a novel hydraulic transmission according to claim 1, characterized in that: The rebound assembly includes a spring cover (53) fixedly installed at the rear end of the adjuster housing (1), a spring adjusting sleeve (54) is provided inside the spring cover (53), a washer (55) is provided on one side of the spring adjusting sleeve (54) and the adjusting sleeve (51), a reset spring (56) is provided between the two washer (55), and an adjusting screw (57) is also included. One end of the adjusting screw (57) passes through the washer (55) and is fixedly connected to the gear cylinder (52).

3. The adjustable variable mechanism of a novel hydraulic transmission according to claim 1, characterized in that: The toothed cylinder (52) has a groove (6) and teeth (7) that mesh with the toothed shaft (2) are provided on the horizontal surface of the groove (6).

4. The adjustable variable mechanism of a novel hydraulic transmission according to claim 1, characterized in that: The regulator housing (1) has a transverse through hole (8) extending through both ends. The regulator housing (1) has a longitudinal through hole (9) connected to the transverse through hole (8). One end of the gear shaft (2) passes through the longitudinal through hole (9) and is connected to the swashplate (4).

5. The adjustable variable mechanism of a novel hydraulic transmission according to claim 1, characterized in that: One side of the transverse through hole (8) is fitted with a position adjustment screw plug (10). One end of the adjustment sleeve (51) is limited by the position adjustment screw plug (10), and the other end is pushed by the elastic force of the reset spring (56) on the gasket (55) so that one end of the adjustment sleeve (51) is always pressed against the position adjustment screw plug (10).

6. The adjustable variable mechanism of a novel hydraulic transmission according to claim 1, characterized in that: The rear end of the spring cover (53) is threaded with a spring adjusting bolt (11), one end of which abuts against the adjusting spring adjusting sleeve (54).

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