Clamping device of hydraulic pump swash plate

Abstract

The utility model discloses a hydraulic pump swash plate clamping device which comprises an operation table, the upper surface of the operation table is fixedly connected with a fixing block, the upper surface of the fixing block is movably connected with a left limiting block, and the upper surface of the left limiting block is fixedly connected with a guide rod. The guide rod, the spring, the limiting sleeve, the compression plate, the limiting semi-ring and the button are matched, when the hydraulic pump swash plate is clamped, the compression plate and the limiting semi-ring can rotate and can reset after being pulled to rise under the action of the spring, and the compression plate is rotated when the spring resets; the upper surface of the hydraulic pump swash plate can be primarily clamped and fixed through a pressing plate, the hydraulic pump swash plates with different thicknesses can be clamped, and a limiting semi-ring can be clamped to a threaded rod during clamping and is matched with a button to limit descending of a sleeve; the surface damage caused by overlarge pressure of the upper limiting column on the clamping part of the pressure relief pump swash plate is avoided, and the detection result is not influenced.

Description

Technical Field

[0001] This utility model belongs to the field of clamping device technology, specifically relating to a clamping device for a hydraulic pump swashplate. Background Technology

[0002] The swashplate of a hydraulic pump is an important mechanical component used to regulate the pump's displacement and pressure. It controls the flow and direction of hydraulic oil by changing its tilt angle, thereby affecting the efficiency and performance of the entire hydraulic system.

[0003] Hydraulic pump swashplates play a crucial role in hydraulic systems. With the continuous development of hydraulic technology, the requirements for the processing and testing accuracy of hydraulic pump swashplates are becoming increasingly stringent. When testing hydraulic pump swashplates, it is usually necessary to clamp and fix their position. Traditional clamping methods typically involve the cooperation of vertically displacing clamping components and fixed clamping components. However, due to the inconsistent thickness of different hydraulic pump swashplates, if the descent height of the vertically displacing clamping components is not precisely controlled, excessive pressure at the clamping points can easily lead to damage to the swashplate surface, affecting the accuracy of the test. Utility Model Content

[0004] To solve the above technical problems, the present invention provides a clamping device for a hydraulic pump swashplate, an operating table, a fixing block fixedly connected to the upper surface of the operating table, a left limiting block movably connected to the upper surface of the fixing block, a guide rod fixedly connected to the upper surface of the left limiting block, a limiting sleeve movably connected to the side surface of the guide rod, a pressure plate rotatably connected to the side surface of the limiting sleeve, a locking half-ring fixedly connected to the side surface of the pressure plate, a button provided on the upper surface of the locking half-ring, and a spring fixedly connected to the lower surface of the limiting sleeve.

[0005] A mounting bracket is fixedly connected to the upper surface of the operating table, a motor is fixedly connected to the upper surface of the mounting bracket, a threaded rod is fixedly connected to the output end of the motor, a sleeve is threadedly connected to the side surface of the threaded rod, and a mounting groove is provided on the upper surface of the operating table.

[0006] Through the above technical solution, the pressure plate can rise to a higher height and then reset under the action of the limiting sleeve and the spring, clamping hydraulic pump swashplates of different thicknesses. At the same time, it can drive the locking half ring to rotate. When the pressure plate clamps the hydraulic pump swashplate, the locking half ring rotates and contacts the threaded rod, which can limit the descent position of the sleeve and avoid excessive descent of the sleeve, which would cause excessive pressure drop of the upper limit column and excessive pressure on the clamping part of the hydraulic pump swashplate, resulting in surface damage.

[0007] The present invention is further configured such that the end of the spring away from the limiting sleeve is fixedly connected to the left limiting block, and the side surface of the threaded rod is rotatably connected to the mounting bracket.

[0008] The present invention is further configured such that a limiting groove is provided on the side surface of the mounting bracket, a limiting plate is fixedly connected to the side surface of the sleeve, and the side surface of the limiting plate is in contact with the limiting groove.

[0009] Through the above technical solution, the limiting plate and the limiting slot cooperate to guide the up and down displacement of the sleeve, preventing the sleeve from rotating with the rotation of the threaded rod.

[0010] The present invention is further configured such that the side surface of the locking half ring contacts the threaded rod, the side surface of the sleeve is fixedly connected to a mounting plate, and the upper surface of the mounting plate is provided with a plurality of mounting holes.

[0011] The present invention is further configured such that a connecting bracket is movably connected to the upper surface of the mounting plate, upper limit posts are symmetrically arranged on the lower surface of the connecting bracket, and screws are threadedly connected to the upper surface of the connecting bracket, with the side surface of the screws threadedly connected to the mounting plate.

[0012] The above technical solution involves mounting the connecting bracket on the mounting plate with screws, thereby fixing the upper limit post in place, and allowing adjustment of the upper limit post's installation position.

[0013] The present invention is further configured such that a support leg is provided on the lower surface of the operating table, and a block is fixedly connected to the side surface of the fixing block.

[0014] The present invention is further configured such that a bolt is fixedly connected to the lower surface of the left limiting block, and a nut is threadedly connected to the side surface of the bolt.

[0015] The above technical solution allows the fixing block and the left limiting block to be installed together by using bolts, nuts and blocks.

[0016] The present invention is further configured such that a lead screw is rotatably connected to the inner side wall of the mounting groove, a turntable is provided at one end of the lead screw, and a right clamping block is threaded onto the side surface of the lead screw.

[0017] The present invention is further provided that a detection device is provided on the operating table.

[0018] The above technical solution enables the testing device to inspect the swashplate of the pressure relief pump.

[0019] The beneficial effects of this utility model are as follows:

[0020] The hydraulic pump swashplate is clamped by a guide rod, spring, limit sleeve, pressure plate, limit half ring, and button. The pressure plate and limit half ring can rotate and be pulled up by the spring and then reset. When the spring resets, the pressure plate rotates, so that the pressure plate can initially clamp and fix the upper surface of the hydraulic pump swashplate. It can clamp hydraulic pump swashplates of different thicknesses. During clamping, the limit half ring can be locked on the threaded rod. In conjunction with the button, it can limit the descent of the sleeve and prevent the upper limit column from putting too much pressure on the clamping part of the pressure relief pump swashplate, which would cause surface damage and affect the test results. Attached Figure Description

[0021] Figure 1 This is a first-view structural diagram of a clamping device for a hydraulic pump swashplate according to the present invention.

[0022] Figure 2 This is a second-view structural diagram of a clamping device for a hydraulic pump swashplate according to the present invention;

[0023] Figure 3 This is a partial structural schematic diagram of a clamping device for a hydraulic pump swashplate according to the present invention.

[0024] Figure 4 This is a partially exploded view of the clamping device for a hydraulic pump swashplate according to this utility model.

[0025] Figure 5 This is another structural schematic diagram of the clamping device for a hydraulic pump swashplate according to this utility model.

[0026] Reference numerals in the attached diagram: 1. Operating panel; 2. Fixing block; 3. Left limit block; 4. Guide rod; 5. Spring; 6. Limit sleeve; 7. Pressure plate; 8. Locking half ring; 9. Button; 10. Mounting bracket; 11. Motor; 12. Threaded rod; 13. Sleeve; 14. Mounting plate; 15. Connecting bracket; 16. Screw; 17. Upper limit post; 18. Support leg; 19. Block; 20. Bolt; 21. Nut; 22. Turntable; 23. Lead screw; 24. Right clamping block. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] like Figures 1-5As shown, a clamping device for a hydraulic pump swashplate in this embodiment includes an operating platform 1. A fixing block 2 is fixedly connected to the upper surface of the operating platform 1. A left limiting block 3 is movably connected to the upper surface of the fixing block 2. A guide rod 4 is fixedly connected to the upper surface of the left limiting block 3. The guide rod 4 guides the movement of the limiting sleeve 6 and the pressure plate 7. The limiting sleeve 6 is movably connected to the side surface of the guide rod 4. The pressure plate 7 is rotatably connected to the side surface of the limiting sleeve 6. The pressure plate 7 can rotate on the side surface of the limiting sleeve 6, thereby ensuring that the hydraulic pump swashplate is not obstructed during installation. After the hydraulic pump swashplate is installed, the pressure plate 7 rotates, and the pressure plate 7 exerts pressure on the hydraulic pump. The upper surface of the swashplate clamps the hydraulic pump swashplates of different thicknesses under the action of the spring 5, and can drive the locking half ring 8 to rotate so that the locking half ring 8 can contact the threaded rod 12. The locking half ring 8 is fixedly connected to the side surface of the pressure plate 7. The upper surface of the locking half ring 8 is provided with a button 9. The button 9 and the motor 11 are both electrically connected to an external power source. The lower surface of the limiting sleeve 6 is fixedly connected to the spring 5. The spring 5 is sleeved on the guide rod 4. After the pressure plate 7 is pulled up, the spring 5 is stretched. After the pressure plate 7 is released, the spring 5 returns to its original position, causing the pressure plate 7 to contact the hydraulic pump swashplate.

[0029] A mounting bracket 10 is fixedly connected to the upper surface of the operating table 1. A motor 11 is fixedly connected to the upper surface of the mounting bracket 10. A threaded rod 12 is fixedly connected to the output end of the motor 11. The end of the spring 5 away from the limiting sleeve 6 is fixedly connected to the left limiting block 3. The side surface of the threaded rod 12 is rotatably connected to the mounting bracket 10. A sleeve 13 is threadedly connected to the side surface of the threaded rod 12. When the motor 11 starts, the threaded rod 12 rotates, which causes the sleeve 13 to drop in height. After it drops, it contacts the button 9 and is pressed. When the button 9 is pressed, the motor 11 is de-energized. At this time, the threaded rod 12 stops rotating. An installation groove is provided on the upper surface of the operating table 1.

[0030] The side surface of the mounting bracket 10 is provided with a limit groove. The side surface of the sleeve 13 is fixedly connected to a limit plate. The side surface of the limit plate contacts the limit groove. The limit plate and the limit groove cooperate to guide the displacement of the sleeve 13. The side surface of the locking half ring 8 contacts the threaded rod 12. The side surface of the sleeve 13 is fixedly connected to a mounting plate 14. The upper surface of the mounting plate 14 is provided with several mounting holes. The upper surface of the mounting plate 14 is movably connected to a connecting bracket 15. The lower surface of the connecting bracket 15 is symmetrically provided with upper limit posts 17. After the sleeve 13 descends and contacts the button 9, the lower surface of the upper limit post 17 is parallel to the lower surface of the pressure plate 7. The upper surface of the connecting bracket 15 is threadedly connected to a screw 16. The side surface of the screw 16 is threadedly connected to the mounting plate 14.

[0031] The lower surface of the operating table 1 is provided with a support leg 18. The side surface of the fixing block 2 is fixedly connected with a block 19. The lower surface of the left limit block 3 is fixedly connected with a bolt 20. The side surface of the bolt 20 is threaded with a nut 21. The fixing block 2 and the left limit block 3 can be fixedly connected together by the bolt 20 and the nut 21. The inner side wall of the mounting groove is rotatably connected with a lead screw 23. One end of the lead screw 23 is provided with a turntable 22. The side surface of the lead screw 23 is threaded with a right clamping block 24. When the lead screw 23 rotates, the position of the right clamping block 24 is adjusted so that the left limit block 3 and the right clamping block 24 clamp the two ends of the hydraulic pump swashplate of different sizes. The operating table 1 is provided with a detection device. The detection device is electrically connected to an external power supply and is an existing detection device, which is known to those skilled in the art.

[0032] The working principle of this utility model is as follows: When testing the hydraulic pump swashplate, the device needs to clamp the hydraulic pump swashplate, pull up the pressure plate 7 and rotate it to place the hydraulic pump swashplate on the left limit block 3. Rotate the turntable 22 to make the right clamping block 24 move towards the left limit block 3 and contact the hydraulic pump swashplate. At this time, rotate the pressure plate 7 so that the direction of the pressure plate 7 is perpendicular to the hydraulic pump swashplate. At this time, the locking half ring 8 contacts the threaded rod 12. At this time, release the pressure plate 7 to reset the spring 5. The pressure plate 7, the right clamping block 24 and the left limit block 3 clamp the hydraulic pump swashplate. Adjust the position of the connecting frame 15 and use the screw 16 to install the connecting frame 15 on the mounting plate 14. Turn on the power and start the motor 11 to make the threaded rod 12 rotate the sleeve 13 to drive the mounting plate 14 and the upper limit post 17 to descend. When the sleeve 13 contacts the locking half ring 8, press the button 9 to cut off the power to the motor 11. At this time, the upper limit post 17 contacts the hydraulic pump swashplate and fixes its position.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A clamping device for a swash plate of a hydraulic pump, comprising an operating table (1), characterized in that: The upper surface of the operating platform (1) is fixedly connected with a fixed block (2), the upper surface of the fixed block (2) is movably connected with a left limiting block (3), the upper surface of the left limiting block (3) is fixedly connected with a guide rod (4), the side surface of the guide rod (4) is movably connected with a limiting sleeve (6), the side surface of the limiting sleeve (6) is rotatably connected with a pressing plate (7), the side surface of the pressing plate (7) is fixedly connected with a clamping half ring (8), the upper surface of the clamping half ring (8) is provided with a button (9), the lower surface of the limiting sleeve (6) is fixedly connected with a spring (5). The upper surface of the operating platform (1) is fixedly connected with a mounting rack (10), the upper surface of the mounting rack (10) is fixedly connected with a motor (11), the output end of the motor (11) is fixedly connected with a threaded rod (12), the side surface of the threaded rod (12) is threadedly connected with a sleeve (13), and the upper surface of the operating platform (1) is provided with a mounting groove.

2. A clamp device for a swash plate of a hydraulic pump according to claim 1, wherein The end of the spring (5) away from the limiting sleeve (6) is fixedly connected with the left limiting block (3), and the side surface of the threaded rod (12) is rotatably connected with the mounting rack (10).

3. A clamp device for a swash plate of a hydraulic pump according to claim 1, wherein The side surface of the mounting rack (10) is provided with a limiting clamping groove, and the side surface of the sleeve (13) is fixedly connected with a limiting plate.

4. The clamp apparatus of claim 1, wherein, The side surface of the clamping half ring (8) is in contact with the threaded rod (12), the side surface of the sleeve (13) is fixedly connected with a mounting plate (14), and the upper surface of the mounting plate (14) is provided with a plurality of mounting holes.

5. A clamp apparatus for a swash plate of a hydraulic pump according to claim 4, wherein The upper surface of the mounting plate (14) is movably connected with a connecting rack (15), the lower surface of the connecting rack (15) is symmetrically provided with an upper limiting column (17), the upper surface of the connecting rack (15) is threadedly connected with a screw (16), and the side surface of the screw (16) is threadedly connected with the mounting plate (14).

6. A clamp apparatus for a swash plate of a hydraulic pump according to claim 1, wherein The lower surface of the operating platform (1) is provided with a supporting leg (18), and the side surface of the fixed block (2) is fixedly connected with a block (19).

7. A clamp apparatus for a swash plate of a hydraulic pump according to claim 6, wherein The lower surface of the left limiting block (3) is fixedly connected with a bolt (20), and the side surface of the bolt (20) is threadedly connected with a nut (21).

8. A clamp apparatus for a swash plate of a hydraulic pump according to claim 1, wherein The side inner wall of the mounting groove is rotatably connected with a lead screw (23), one end of the lead screw (23) is provided with a rotating disc (22), and the side surface of the lead screw (23) is threadedly connected with a right clamping block (24).

9. A clamp apparatus for a swash plate of a hydraulic pump according to claim 1, wherein The operating platform (1) is provided with a detection device.

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