A hydraulic pump testing apparatus

Abstract

This utility model relates to the field of hydraulic pump testing technology, and more particularly to a hydraulic pump testing device. Its technical solution includes: a frame and an adjustable mechanism and a stabilizing mechanism disposed inside the frame. A double-acting screw is rotatably mounted on the inner side of the mounting plate. The top of a sleeve clamp is fixedly connected to the inner bottom surface of the mounting plate. Cross clamping members are provided on both sides of the sleeve clamp. The adjustable mechanism includes an I-beam frame fixedly connected to the inner bottom surface of the frame. Each worm gear has a screw threadedly connected to its inner ring. A top plate is provided on the top surface of the circular base plate. This utility model, by setting an adjustable mechanism, allows for height adjustment of the hydraulic pump, saving debugging time and improving testing efficiency. The motor, double-acting screw, and cross clamping members allow for centering adjustment of the hydraulic pump shaft to accommodate different specifications of hydraulic pumps. The stabilizing mechanism provides auxiliary fixation for the hydraulic pump, preventing vibration from affecting the test.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic pump testing technology, and in particular to a hydraulic pump testing device. Background Technology

[0002] Hydraulic pumps are the core power components in hydraulic systems. Their function is to convert the mechanical energy of prime movers such as electric motors and internal combustion engines into hydraulic pressure energy, providing hydraulic oil with a certain flow rate and pressure to drive hydraulic actuators such as hydraulic cylinders and hydraulic motors. Hydraulic pump testing equipment is a professional device used to test the performance, reliability and durability of hydraulic pumps, and is widely used in hydraulic pump research and development, production and maintenance.

[0003] Existing hydraulic pump testing equipment typically has its motor fixed on a table, lacking adjustability. Furthermore, different types and models of hydraulic pumps have varying specifications; larger, larger pumps may have their pump shafts higher than the motor shaft, while smaller, smaller pumps may have their pump shafts lower than the motor shaft. Additionally, the pump shaft may not be centered, or its angle may be offset, making it impossible to ensure that the pump shaft and motor shaft are aligned. This necessitates manual adjustment of the hydraulic pump, such as raising pumps with shafts lower than the motor shaft. This adjustment process is time-consuming, labor-intensive, and inefficient. Therefore, this paper proposes a new hydraulic pump testing device. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a hydraulic pump testing device.

[0005] The technical solution of this utility model: A hydraulic pump testing device includes a frame and an adjustable mechanism disposed inside the frame. A mounting plate is disposed on the top surface of the frame, and a stabilizing mechanism is disposed on one side of the mounting plate. A bidirectional lead screw is rotatably disposed on the inner side of the mounting plate, and one end of the bidirectional lead screw is connected to a motor. Two guide rods are connected to the inner side of the mounting plate, respectively located on both sides of the bidirectional lead screw. A sleeve clamp is disposed in the middle of the outer ring of the bidirectional lead screw, and the top of the sleeve clamp is fixedly connected to the inner bottom surface of the mounting plate. Cross clamping members are disposed on both sides of the sleeve clamp, and the cross clamping members are threadedly connected to the bidirectional lead screw. A U-shaped frame is connected to one side of the frame, and a rotating threaded rod is threadedly connected to the front side of the U-shaped frame. A knob is disposed at the front end of the rotating threaded rod. An L-shaped push plate is disposed at the end of the rotating threaded rod near the frame. A movable plate is disposed on the side of the L-shaped push plate near the frame, and a motor is connected to the top surface of the movable plate.

[0006] The adjustable mechanism includes an I-beam frame fixedly connected to the inner bottom surface of the platform. A motor is installed on one side of the I-beam frame, and the output end of the motor passes through the I-beam frame and is connected to a worm gear. Two worm wheels are rotatably installed on the top surface of the I-beam frame, and one side of the worm wheel meshes with the worm gear. A screw is threaded into the inner ring of each worm wheel. The top surface of the screw is provided with the same circular base plate. A top plate is provided on the top surface of the circular base plate. A ball groove is opened on the bottom surface of the top plate, and a ball is rolled in the groove. The bottom surface of the ball abuts against the circular base plate. A hydraulic rod is connected to the bottom surface of the top plate, and the bottom of the hydraulic rod is fixedly connected to the inner top surface of the platform.

[0007] Preferably, the two ends of the cross clamping member are provided with guide holes corresponding to the positions of the guide rods, and are slidably connected to the guide rods through the guide holes.

[0008] Preferably, the stabilizing mechanism includes a plurality of movable rods disposed on the top surface of the mounting plate and extending through its bottom surface. A limit plate is disposed on the top of the movable rods, and a lifting rod is connected to the top surface of the limit plate. A rubber plate is connected to the bottom of the movable rods, and a spring is disposed on the top surface of the rubber plate and sleeved on the outer ring of each movable rod. A connecting plate is fixedly connected to the top of the spring, and the connecting plate is fixedly connected to the mounting plate.

[0009] Preferably, the top surface of the platform has a sliding groove corresponding to the position of the movable plate.

[0010] Preferably, a circular hole is provided on the top surface of the platform corresponding to the position of the circular base plate.

[0011] Preferably, a hydraulic pump is provided on the top surface of the top plate, and a coupling is connected to the input end of the hydraulic pump. The hydraulic pump and the second motor are connected through the coupling.

[0012] Preferably, a rectangular notch is provided at the bottom of the platform, and the screw is located at the center of the rectangular notch;

[0013] Preferably, an infrared sensor is provided on the inner side of the mounting plate at the position corresponding to the bottom end of the cross clamp, an indicator light is provided on one corner of the top surface of the mounting plate, and a controller is provided on the corresponding other corner.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] This invention allows for height adjustment of the hydraulic pump through an adjustable mechanism, saving debugging time and improving testing efficiency. The motor, double-acting lead screw, and cross clamping device enable centering adjustment of the hydraulic pump shaft to accommodate different specifications of hydraulic pumps. The stabilizing mechanism provides auxiliary fixation for the hydraulic pump, preventing vibration from affecting the test. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of some areas in this utility model;

[0019] Figure 4 This is a cross-sectional view of the adjustable mechanism in this utility model;

[0020] Figure 5 This is a schematic diagram of the stabilizing mechanism in this utility model.

[0021] Reference numerals in the attached diagram: 1. Stand; 2. Mounting plate; 3. Two-way lead screw; 4. Motor 1; 5. Guide rod; 6. Sleeve clamp; 7. Cross clamp; 8. U-shaped frame; 9. Rotating threaded rod; 10. Knob; 11. L-shaped push plate; 12. Moving plate; 13. Motor 2; 14. Moving rod; 15. Limiting plate; 16. Lifting rod; 17. Rubber plate; 18. Spring; 19. Connecting plate; 20. I-beam frame; 21. Motor 3; 22. Worm gear; 23. Worm wheel; 24. Screw; 25. Circular base plate; 26. Top plate; 27. Ball bearing; 28. Hydraulic rod; 29. ​​Infrared sensor; 30. Indicator light; 31. Controller. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Example

[0024] like Figures 1 to 5As shown, the hydraulic pump testing equipment proposed in this utility model includes a frame 1 and an adjustable mechanism disposed inside the frame 1. A mounting plate 2 is disposed on the top surface of the frame 1 and is fixedly connected to the frame 1. An indicator light 30 is disposed at one corner of the top surface of the mounting plate 2 and is fixedly connected to the mounting plate 2. A controller 31 is disposed at the corresponding other corner and is fixedly connected to the mounting plate 2. A stabilizing mechanism is disposed on one side of the mounting plate 2. The stabilizing mechanism includes multiple moving rods 14 disposed on the top surface of the mounting plate 2 and penetrating its bottom surface. Sliding holes are provided on the mounting plate 2 corresponding to the moving rods 14, allowing the moving rods 14 to slide up and down within the sliding holes. A limit plate 15 is disposed at the top of the moving rods 14, and the limit plate 15 is connected to the moving rods 14. 4. A lifting rod 16 is fixedly connected to the top surface of the limiting plate 15. The bottom end of the lifting rod 16 is fixedly connected to the top surface of the limiting plate 15. A rubber plate 17 is fixedly connected to the bottom of the moving rod 14. A spring 18 is provided on the top surface of the rubber plate 17 and sleeved on the outer ring of each moving rod 14. The bottom of the spring 18 is fixedly connected to the top surface of the rubber plate 17. A connecting plate 19 is fixedly connected to the top of the spring 18 and is fixedly connected to the mounting plate 2. By setting a stabilizing mechanism, it can play a certain auxiliary fixing role for the hydraulic pump in contact with the rubber plate 17 when used in conjunction with the adjustable mechanism, so as to avoid the hydraulic pump from affecting the test results due to vibration during the test.

[0025] A bidirectional lead screw 3 is rotatably mounted on the inner side of the mounting plate 2. One end of the bidirectional lead screw 3 is connected to a motor 4, with one end of the lead screw 3 fixedly connected to the output end of the motor 4. The other end is rotatably connected to the mounting plate 2 through a rotating hole corresponding to the position of the bidirectional lead screw 3. Two guide rods 5 are connected to the inner side of the mounting plate 2, located on both sides of the bidirectional lead screw 3. Both ends of the guide rods 5 are fixedly connected to the inner side of the mounting plate 2. A sleeve clamp 6 is located in the middle of the outer ring of the bidirectional lead screw 3, with the top of the sleeve clamp 6 fixedly connected to the inner bottom surface of the mounting plate 2. The sleeve clamp 6 is fitted onto the outer ring of the bidirectional lead screw 3, and the bidirectional lead screw 3 is rotatably connected to the sleeve clamp 6. By fixing the sleeve clamp 6 to the mounting plate 2, the bidirectional lead screw 3 can be secured to a certain extent. For the fixing function, the sleeve clamping block 6 is provided with cross clamping parts 7 on both sides, and the cross clamping parts 7 are threadedly connected to the double-acting screw 3. By setting the cross clamping parts 7 as a cross plate frame and connecting the bottom inner side with a V-shaped block, the bottom V-shaped block can adapt to hydraulic pump shafts of different diameters. The two ends of the cross clamping parts 7 are provided with guide holes corresponding to the guide rod 5, and are slidably connected to the guide rod 5 through the guide holes. The inner side of the mounting plate 2 is provided with an infrared sensor 29 corresponding to the bottom end of the cross clamping parts 7. With the setting of the double-acting screw 3 and the motor 4, the double-acting screw 3 can be driven to rotate after the motor 4 is started. The double-acting screw 3 drives the two threaded cross clamping parts 7 to move synchronously towards or away from each other, ensuring the synchronicity and accuracy of the centering action.

[0026] A U-shaped frame 8 is fixedly connected to one side of the platform 1. A rotating threaded rod 9 is threadedly connected to the front of the U-shaped frame 8. A knob 10 is fixedly connected to the front end of the rotating threaded rod 9. An L-shaped push plate 11 is fixedly connected to the rotating threaded rod 9 at the end of the rotating threaded rod 9 near the platform 1. A movable plate 12 is fixedly connected to the L-shaped push plate 11 at the side of the L-shaped push plate 11 near the platform 1. A sliding groove is formed on the top surface of the platform 1 corresponding to the position of the movable plate 12. The movable plate 12 slides in the sliding groove. A motor is connected to the top surface of the movable plate 12. Motor 13 is fixedly connected to the top surface of the moving plate 12. A hydraulic pump is installed on the top surface of the top plate 26, and a coupling is installed on the pump shaft. The hydraulic pump and motor 13 are connected through the coupling. By setting up a U-shaped frame 8, a rotating threaded rod 9, a knob 10, an L-shaped push plate 11, and a moving plate 12, the moving plate 12 can be pushed closer to or away from the platform 1 by rotating the threaded rod 9. This drives the motor 13 connected to the top surface of the moving plate 12 to connect or disconnect from the hydraulic pump through the connecting coupling. This solves the problem of the inadjustability of the hydraulic pump testing equipment, makes the testing process faster and simpler, and improves the testing efficiency.

[0027] The adjustable mechanism includes an I-beam frame 20 fixedly connected to the inner bottom surface of the platform 1. A motor 21 is mounted on one side of the I-beam frame 20 and is fixedly connected to the I-beam frame 20. The output end of the motor 21 passes through the I-beam frame 20 and is connected to a worm gear 22. The I-beam frame 20 has an output end hole corresponding to the output end of the motor 21, and the output end of the motor 21 is rotatably mounted in the output end hole. The worm gear 22 is fixedly connected to the motor 21. Two worm wheels 23 are rotatably mounted on the top surface of the I-beam frame 20. One side of the worm gear 23 meshes with the worm 22. Each worm gear 23 has a screw 24 threadedly connected to its inner ring. A rectangular notch is provided at the bottom of the frame 1, with the screw 24 positioned at the center of the rectangular notch. This rectangular notch ensures that the screw 24 has room to move up and down during adjustment. A circular base plate 25 is fixedly connected to the top surface of the screw 24. A circular hole is provided on the top surface of the frame 1 corresponding to the position of the circular base plate 25. This circular hole facilitates adjustment during the process. The circular base plate 25 moves up and down. A top plate 26 is provided on the top surface of the circular base plate 25. A ball groove is formed on the bottom surface of the top plate 26, and balls 27 roll within the groove. The bottom surface of the balls 27 abuts against the circular base plate 25. The height of the circular base plate 25 is lower than that of the top plate 26, allowing the top plate 26 to rotate freely in different directions. Through the arrangement of the circular base plate 25, the top plate 26, and the balls 27, the top plate 26 can slide in any direction, thereby adjusting the overall alignment of the hydraulic pump. A hydraulic... The hydraulic rod 28 is fixedly connected to the inner top surface of the stand 1. The hydraulic rod 28 can provide a certain support for the circular base plate 25 and maintain the stability of the circular base plate 25. By setting an adjustable mechanism, the height of the pump shaft of hydraulic pumps of different specifications and sizes can be adjusted. For example, for hydraulic pumps whose pump shaft is lower than the motor shaft, the overall height can be adjusted upward so that the pump shaft of the hydraulic pump and the motor shaft are in the same center, reducing the impact on the test results caused by the shafts not being in the same center during the test.

[0028] In this embodiment, the hydraulic pump is first placed on the top plate 26. If the hydraulic pump is too high, the lifting rod 16 is lifted upwards, and the lifting rod 16 moves the limiting plate 15 upwards. The moving rod 14, which is fixedly connected to the limiting plate 15, also moves upwards. After the hydraulic pump is placed in, the lifting rod 16 is released. Due to the setting of the spring 18, the spring 18 applies an elastic force to the rubber plate 17, so that the rubber plate 17 has a downward force on the hydraulic pump, which is aligned and fixed. When the infrared sensor 29 detects that the hydraulic pump shaft is not within the clamping range of the cross clamp 7, it sends a feedback signal to the controller 31. The controller 31 controls the adjustable mechanism to start, the motor 3 21 starts, and drives the worm gear 22 to rotate. The worm gear 22 drives the meshing worm wheel 23 to rotate. The worm wheel 23 drives the screw 24 connected to the inner wall thread to rotate upwards or downwards. The up and down rotation of the screw 24 drives the circular base plate 25 to move up and down. When the infrared sensor 29 When the hydraulic pump shaft is detected to be within the centering clamping range, the indicator light 30 on the top surface of the mounting plate 2 illuminates, prompting the operator to close the adjustable mechanism. Then, motor 4 starts, driving the double-acting screw 3 to rotate. The double-acting screw 3 drives the threaded cross clamp 7 to move in opposite directions along the guide rod 5. The cross clamp 7 centers and fixes the hydraulic pump shaft. Due to the setting of the top plate 26 and the ball bearing 27, the hydraulic pump can be adjusted in angle simultaneously while the cross clamp 7 is centering the pump shaft, so that it is centered. After the pump shaft is adjusted, turn the knob 10. The knob 10 drives the rotating threaded rod 9 to rotate. The rotation of the threaded rod 9 drives the L-shaped push plate 11 to push the moving plate 12 along the sliding groove towards the hydraulic pump. The moving plate 12 moves the motor 13 connected to the top surface towards the hydraulic pump, until it reaches the position where it is connected to the coupling. After connection, testing can be performed.

[0029] The above-described specific embodiments are merely preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above-described specific embodiments.

Claims

1. A hydraulic pump testing device, comprising a test stand (1) and an adjustable mechanism disposed inside the test stand (1), characterized in that: The top surface of the frame (1) is provided with a mounting plate (2). A stabilizing mechanism is provided on one side of the mounting plate (2). A bidirectional lead screw (3) is rotatably provided on the inner side of the mounting plate (2), and a motor (4) is connected to one end of the bidirectional lead screw (3). Two guide rods (5) are connected to the inner side of the mounting plate (2) and are located on both sides of the bidirectional lead screw (3). A sleeve clamp (6) is provided in the middle of the outer ring of the bidirectional lead screw (3), and the top of the sleeve clamp (6) is fixedly connected to the inner bottom surface of the mounting plate (2). The two sides of the sleeve clamp (6) are... All are provided with cross clamps (7), and the cross clamps (7) are threadedly connected to the double-acting screw (3). A U-shaped frame (8) is connected to one side of the platform (1). A rotating threaded rod (9) is threadedly connected to the front side of the U-shaped frame (8). A knob (10) is provided at the front end of the rotating threaded rod (9). An L-shaped push plate (11) is provided at the end of the rotating threaded rod (9) near the platform (1). A moving plate (12) is provided on the side of the L-shaped push plate (11) near the platform (1). A motor (13) is connected to the top surface of the moving plate (12). The adjustable mechanism includes an I-beam (20) fixedly connected to the bottom surface of the platform (1). A motor (21) is provided on one side of the I-beam (20). The output end of the motor (21) passes through the I-beam (20) and is connected to a worm gear (22). Two worm wheels (23) are rotatably provided on the top surface of the I-beam (20), and one side of the worm wheel (23) meshes with the worm gear (22). A screw is threaded into the inner ring of each worm wheel (23). 24), the top surface of the screw (24) is provided with the same circular base plate (25), the top surface of the circular base plate (25) is provided with a top plate (26), the bottom surface of the top plate (26) is provided with a ball groove and a ball (27) is rolled in the groove, and the bottom surface of the ball (27) abuts against the circular base plate (25). The bottom surface of the top plate (26) is connected to a hydraulic rod (28), and the bottom of the hydraulic rod (28) is fixedly connected to the inner top surface of the frame (1).

2. The hydraulic pump testing equipment according to claim 1, characterized in that, The cross clamp (7) has guide holes at both ends corresponding to the guide rod (5), and is slidably connected to the guide rod (5) through the guide holes.

3. The hydraulic pump testing equipment according to claim 1, characterized in that, The stabilizing mechanism includes multiple movable rods (14) disposed on the top surface of the mounting plate (2) and extending through its bottom surface. A limit plate (15) is provided on the top of each movable rod (14). A lifting rod (16) is connected to the top surface of the limit plate (15). A rubber plate (17) is connected to the bottom of each movable rod (14). A spring (18) is provided on the top surface of the rubber plate (17) and is sleeved on the outer ring of each movable rod (14). A connecting plate (19) is fixedly connected to the top of the spring (18), and the connecting plate (19) is fixedly connected to the mounting plate (2).

4. The hydraulic pump testing equipment according to claim 1, characterized in that, The top surface of the platform (1) is provided with a sliding groove corresponding to the position of the movable plate (12).

5. A hydraulic pump testing device according to claim 1, characterized in that, A circular hole is provided on the top surface of the stand (1) at the position corresponding to the circular base plate (25).

6. The hydraulic pump testing equipment according to claim 1, characterized in that, A hydraulic pump is provided on the top surface of the top plate (26), and a coupling is connected to the input end of the hydraulic pump. The hydraulic pump is connected to the motor (13) through the coupling.

7. A hydraulic pump testing device according to claim 1, characterized in that, The bottom of the platform (1) has a rectangular notch, and the screw (24) is located at the center of the rectangular notch.

8. A hydraulic pump testing device according to claim 1, characterized in that, An infrared sensor (29) is provided on the inner side of the mounting plate (2) at the position corresponding to the bottom of the cross clamp (7). An indicator light (30) is provided on one corner of the top surface of the mounting plate (2), and a controller (31) is provided on the other corner.

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