A hydraulic oil pump durability test device

Abstract

The utility model discloses a hydraulic oil pump durability test device, it includes hydraulic oil pump test board, the board and butt joint piece, two locating plates are fixedly connected on the hydraulic oil pump test board, the right surface fixedly connected with stepping motor of the board, the output fixedly connected with threaded lead screw of stepping motor, the outer surface screw thread connection of threaded lead screw has the sliding block, the top inner wall fixedly connected with the guide block of the board, the inner surface of sliding block and guide block sliding connection has, two connecting blocks are fixedly connected on the sliding block, and the same movable clamping plate is fixedly connected on two connecting blocks. Through the setting of butt joint piece, threaded rod and nut etc. structure, in this scheme, respectively after taking off nut, butt joint piece, can remove the fixing to locating plate, thereby can take off locating plate from the device, and further can carry out cleaning maintenance etc. work to threaded lead screw, sliding block etc. structure, ensure the use stability of subsequent device.

Description

Technical Field

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

[0002] The hydraulic pump is the core power component of the hydraulic system. Its function is to convert the mechanical energy of the prime mover into hydraulic energy, provide hydraulic oil with a certain pressure and flow rate to the hydraulic system, and drive the hydraulic actuators to work. The hydraulic pump test bench is a key testing equipment in the field of mechanical engineering used to verify the comprehensive performance of hydraulic pumps. Its functions cover multiple core performance indicators such as displacement verification, efficiency testing, sealing testing, and durability testing.

[0003] A search revealed that application number 202323146148.X describes a hydraulic pump test bench that, through the cooperation of movable clamping plates, fixed clamping plates, screws, turntables, movable slots, and movable columns, enables quick and labor-saving disassembly and assembly of hydraulic pumps, reducing the time spent on disassembly and assembly and improving testing efficiency.

[0004] In the above scheme, a screw is used to move and clamp the movable clamping plate. However, the screw is directly exposed to the external environment. When the hydraulic oil pump is subjected to various tests such as durability tests on the test bench, hydraulic oil may be exposed. Since the screw is not protected, hydraulic oil can easily adhere to the screw. Furthermore, the screw is a precision component. If the screw is not cleaned in time, the corrosive adhesion of hydraulic oil may cause corrosion to the screw, thereby affecting the accuracy of the screw. This will prevent the movable clamping plate from moving normally and smoothly, affecting the clamping and fixing effect on the hydraulic oil pump. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic oil pump durability testing device that can protect the threaded screw, prevent the threaded screw from being affected by the adhesion of oil and other impurities, ensure that the slider, connecting block and movable clamp can move smoothly, thereby ensuring the clamping and fixing effect of the hydraulic oil pump. In addition, the solution eliminates the need for manual rotation of the threaded screw, improving the overall convenience of the device.

[0006] To achieve the above objectives, a hydraulic pump durability testing device is provided, comprising a hydraulic pump test bench, a placement plate, and a docking block. Two positioning plates are fixedly connected to the hydraulic pump test bench. A stepper motor is fixedly connected to the right surface of the placement plate. A threaded screw is fixedly connected to the output end of the stepper motor. A slider is threadedly connected to the outer surface of the threaded screw. A guide block is fixedly connected to the top inner wall of the placement plate. The inner surface of the slider is slidably connected to the guide block. Two connecting blocks are fixedly connected to the slider. The same movable clamping plate is fixedly connected to the two connecting blocks. A fixed clamping plate is fixedly connected to the upper surface of the placement plate.

[0007] Two threaded rods are fixedly connected to each of the two positioning plates. The inner surface of the mating block is movably connected to the threaded rods. Multiple positioning blocks are fixedly connected to the placement plate. The outer surface of the mating block is movably connected to the positioning block. Nuts are threadedly connected to the outer surfaces of the four threaded rods. Multiple inserts are fixedly connected to the inner surface of the placement plate. The outer surface of the inserts is movably connected to the positioning plate.

[0008] According to the hydraulic pump durability testing device, the slider is provided with a guide groove, and the outer surface of the guide block is slidably connected to the guide groove.

[0009] According to the hydraulic pump durability testing device, a positioning groove is provided on the positioning plate, and the outer surface of the insert block is movably connected to the positioning groove.

[0010] According to the hydraulic pump durability testing device, a limiting groove is provided on the positioning block, and the outer surface of the docking block is movably connected to the limiting groove.

[0011] According to the hydraulic pump durability testing device, the mating block has a mating hole, and the outer surface of the threaded rod is movably connected to the mating hole.

[0012] According to the hydraulic pump durability testing device, the nut has a connecting groove, and the outer surface of the threaded rod is threadedly connected to the connecting groove.

[0013] According to the hydraulic pump durability testing device, the outer surface of the threaded screw is rotatably connected to the placement plate, and the side surface of the mating block is in contact with the placement plate.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] 1. By setting up structures such as a placement plate, a positioning plate, and a stepper motor, this solution can protect the threaded screw under the action of the placement plate and the positioning plate, preventing the threaded screw from being affected by the adhesion of oil and other impurities, ensuring that the slider, connecting block, and movable clamping plate can move smoothly, thereby ensuring the clamping and fixing effect of the hydraulic oil pump. In addition, the solution eliminates the need for manual rotation of the threaded screw, improving the overall convenience of the device.

[0016] 2. By using structures such as docking blocks, threaded rods, and nuts, this solution allows the positioning plate to be removed after the nuts and docking blocks are taken off. This enables the positioning plate to be removed from the device, allowing for cleaning and maintenance of structures such as threaded rods and sliders, ensuring the stability of the device in subsequent use.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the overall structure of a hydraulic oil pump durability testing device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional view of the placement plate of the hydraulic oil pump durability testing device of this utility model;

[0021] Figure 3 This is a schematic diagram of the threaded screw portion of a hydraulic pump durability testing device according to this utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the positioning plate of the hydraulic oil pump durability testing device of this utility model;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the connecting block of a hydraulic pump durability testing device according to this utility model.

[0024] Legend:

[0025] 1. Hydraulic pump test bench; 2. Placement plate; 3. Positioning plate; 4. Stepper motor; 5. Threaded screw; 6. Slider; 7. Guide block; 8. Connecting block; 9. Movable clamping plate; 10. Fixed clamping plate; 11. Butt joint block; 12. Threaded rod; 13. Positioning block; 14. Nut; 15. Insert block; 16. Guide groove; 17. Positioning groove; 18. Limiting groove; 19. Butt joint hole; 20. Connecting groove. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] Reference Figure 1-5 This utility model discloses a hydraulic pump durability testing device, comprising a hydraulic pump test bench 1, a placement plate 2, and a docking block 11. Two positioning plates 3 are fixedly connected to the hydraulic pump test bench 1. A stepper motor 4 is fixedly connected to the right surface of the placement plate 2. A threaded screw 5 is fixedly connected to the output end of the stepper motor 4. A slider 6 is threadedly connected to the outer surface of the threaded screw 5. A guide block 7 is fixedly connected to the top inner wall of the placement plate 2. The inner surface of the slider 6 is slidably connected to the guide block 7. Two connecting blocks 8 are fixedly connected to the slider 6, and the same movable clamping plate 9 is fixedly connected to the two connecting blocks 8. A fixed clamping plate 10 is fixedly connected to the upper surface of the placement plate 2. A guide groove 16 is formed on the slider 6, and the outer surface of the guide block 7 is slidably connected to the guide groove 16. The outer surface of the threaded screw 5... The stepper motor 4 is rotatably connected to the placement plate 2, and the side surface of the mating block 11 contacts the placement plate 2. It should be noted that the stepper motor 4 has a self-locking function. After the stepper motor 4 stops, its output shaft will remain in the current position. This is because the stator winding of the stepper motor 4 will still generate a certain static holding torque when it is not energized, which can prevent the motor rotor from rotating arbitrarily due to external force, thereby achieving self-locking and ensuring the stability of the position of the movable clamping plate 9. Furthermore, the control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0028] Two threaded rods 12 are fixedly connected to each of the two positioning plates 3. The inner surface of the mating block 11 is movably connected to the threaded rod 12. Multiple positioning blocks 13 are fixedly connected to the placement plate 2. The outer surface of the mating block 11 is movably connected to the positioning block 13. Nuts 14 are threadedly connected to the outer surfaces of the four threaded rods 12. Multiple insert blocks 15 are fixedly connected to the inner surface of the placement plate 2. The outer surface of the insert blocks 15 is movably connected to the positioning plate 3. Positioning grooves 17 are provided on the positioning plate 3. The outer surface of the insert blocks 15 is movably connected to the positioning grooves 17. Limiting grooves 18 are provided on the positioning blocks 13. The outer surface of the mating block 11 is movably connected to the limiting grooves 18. A mating hole 19 is provided on the mating block 11. The outer surface of the threaded rod 12 is movably connected to the mating hole 19. A connecting groove 20 is provided on the nut 14. The outer surface of the threaded rod 12 is threadedly connected to the connecting groove 20.

[0029] Working Principle: The hydraulic pump to be tested is placed on the placement plate 2, with one side of the pump in contact with the fixed clamping plate 10. The stepper motor 4 is then started, driving the threaded screw 5 to rotate. The rotating threaded screw 5, through the guide block 7 and guide groove 16, moves the slider 6, connecting block 8, and movable clamping plate 9 closer to the fixed clamping plate 10. During this movement, the movable clamping plate 9 contacts the hydraulic pump, and the pump is then fixed by the clamping action of the movable clamping plate 9 and the fixed clamping plate 10. The pipeline connection between the hydraulic pump and the hydraulic pump test bench 1 is then established to begin the test. In this design, the threaded screw 5 is located inside the placement plate 2 and positioning plate 3, preventing oil and other impurities from adhering to it during the test, ensuring the rotational accuracy of the threaded screw 5, and thus ensuring the smooth movement of the movable clamping plate 9. Furthermore, by rotating the nut 14, the... After unscrewing the nut 14 from the threaded rod 12, the fixing of the mating block 11 can be released. Then, the mating block 11 is removed from the threaded rod 12 and the positioning block 13 respectively, thereby releasing the fixing between the placement plate 2 and the positioning plate 3. Then, by pulling the placement plate 2 upward, the placement plate 2 and the structure on the placement plate 2 can be removed from the positioning plate 3, realizing the disassembly of the placement plate 2. At this time, the threaded rod 5, slider 6 and other structures can be cleaned and maintained to ensure the stability of the subsequent clamping structure. After the threaded rod 5, slider 6 and other structures are cleaned and maintained, the insert block 15 on the positioning plate 3 is inserted into the positioning groove 17, and then the mating block 11 is inserted into the threaded rod 12 through the mating hole 19. While the mating block 11 is inserted into the threaded rod 12, the mating block 11 is also inserted into the limiting groove 18 on the positioning block 13. Finally, the nut 14 is screwed back onto the threaded rod 12 through the connecting groove 20 on the nut 14 to realize the connection and fixing between the placement plate 2 and the positioning plate 3.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A hydraulic pump durability testing device, comprising: A hydraulic oil pump test bench (1), a placement plate (2) and a docking block (11) are characterized in that two positioning plates (3) are fixedly connected to the hydraulic oil pump test bench (1), a stepper motor (4) is fixedly connected to the right surface of the placement plate (2), a threaded screw (5) is fixedly connected to the output end of the stepper motor (4), a slider (6) is threadedly connected to the outer surface of the threaded screw (5), a guide block (7) is fixedly connected to the top inner wall of the placement plate (2), the inner surface of the slider (6) is slidably connected to the guide block (7), two connecting blocks (8) are fixedly connected to the slider (6), the same movable clamping plate (9) is fixedly connected to the two connecting blocks (8), and a fixed clamping plate (10) is fixedly connected to the upper surface of the placement plate (2). Two threaded rods (12) are fixedly connected to each of the two positioning plates (3). The inner surface of the mating block (11) is movably connected to the threaded rods (12). Multiple positioning blocks (13) are fixedly connected to the placement plate (2). The outer surface of the mating block (11) is movably connected to the positioning block (13). Nuts (14) are threadedly connected to the outer surfaces of the four threaded rods (12). Multiple inserts (15) are fixedly connected to the inner surface of the placement plate (2). The outer surface of the inserts (15) is movably connected to the positioning plate (3).

2. The hydraulic pump durability testing device according to claim 1, characterized in that, The slider (6) has a guide groove (16), and the outer surface of the guide block (7) is slidably connected to the guide groove (16).

3. The hydraulic pump durability testing device according to claim 1, characterized in that, The positioning plate (3) has a positioning groove (17), and the outer surface of the insert (15) is movably connected to the positioning groove (17).

4. The hydraulic pump durability testing device according to claim 1, characterized in that, A limiting groove (18) is provided on the positioning block (13), and the outer surface of the docking block (11) is movably connected to the limiting groove (18).

5. The hydraulic pump durability testing device according to claim 1, characterized in that, The docking block (11) has a docking hole (19), and the outer surface of the threaded rod (12) is movably connected to the docking hole (19).

6. The hydraulic pump durability testing device according to claim 1, characterized in that, The nut (14) has a connecting groove (20), and the outer surface of the threaded rod (12) is threadedly connected to the connecting groove (20).

7. The hydraulic pump durability testing device according to claim 1, characterized in that, The outer surface of the threaded screw (5) is rotatably connected to the placement plate (2), and the side surface of the mating block (11) is in contact with the placement plate (2).

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