A hydraulic motor pressure testing device

Abstract

The utility model discloses a kind of hydraulic motor pressure testing devices, it is related to hydraulic equipment test technical field, including motor positioning workstation, motor test support, hydraulic motor positioning assembly, height adjusting frame and hydraulic detector, the top rear side welding fixed connection motor test support of motor positioning workstation, the top left and right sides of motor positioning workstation are evenly clamped fixed connection hydraulic motor positioning assembly in advance, the top transverse welding fixed connection hydraulic cylinder of hydraulic motor positioning assembly, the outside middle of hydraulic cylinder is welded fixed connection oil storage bottle, the upper and lower sides right end of oil storage bottle are evenly clamped fixed connection oil extraction pipe in through, the outer wall surface through of oil extraction pipe is respectively clamped fixed connection oil extraction pump and stop valve, the inner wall surface piston sliding connection piston hydraulic rod of hydraulic cylinder, the inside welding fixed connection four quarters and a half circle clamping plate of piston hydraulic rod, the inside clamped fixed connection rubber gasket of four quarters and a half circle clamping plate.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic equipment testing technology, specifically a hydraulic motor pressure testing device. Background Technology

[0002] Hydraulic motors are crucial actuators in hydraulic systems, and their performance directly impacts the overall efficiency and reliability of the system. Pressure, as a key performance parameter of hydraulic motors, requires precise testing. However, existing hydraulic motor pressure testing devices often suffer from poor structural stability, leading to vibration or displacement during testing and resulting in significant pressure measurement errors. Therefore, those skilled in the art have developed a hydraulic motor pressure testing device to address the problems described in the background section. Utility Model Content

[0003] The purpose of this invention is to provide a hydraulic motor pressure testing device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A hydraulic motor pressure testing device includes a motor positioning workbench, a motor testing bracket, a hydraulic motor positioning assembly, a height adjustment frame, and a hydraulic detector. The motor testing bracket is welded and fixedly connected to the rear top of the motor positioning workbench. The hydraulic motor positioning assembly is engaged and fixedly connected to the left and right sides of the top of the motor positioning workbench. A hydraulic cylinder is welded and fixedly connected to the top of the hydraulic motor positioning assembly. An oil storage bottle is welded and fixedly connected to the middle of the outer side of the hydraulic cylinder. An oil suction pipe is engaged and fixedly connected to the right end of the upper and lower sides of the oil storage bottle. An oil pump and a check valve are engaged and fixedly connected to the outer wall surface of the oil suction pipe. A piston hydraulic rod is connected to the inner wall surface of the hydraulic cylinder by piston sliding motion. A quarter-and-a-half-circular arc clamping plate is welded and fixedly connected to the inner side of the piston hydraulic rod. A rubber gasket is engaged and fixedly connected to the inner side of the quarter-and-a-half-circular arc clamping plate. A lower clamping plate guide rail is welded and fixedly connected to the bottom of the quarter-and-a-half-circular arc clamping plate at the middle of the front of the top of the motor positioning workbench.

[0005] As a further embodiment of this utility model: the height adjustment frame is longitudinally engaged and fixedly connected at the middle of the lower front end of the motor test bracket, and both ends of the height adjustment frame have longitudinal slots and grooves.

[0006] As a further improvement of this utility model: the outer surface of the height adjustment frame is slidably connected to the positioning frame, and the positioning frame is fixedly connected to the positioning screws through the inner side of the longitudinal groove at the middle of the left and right ends.

[0007] As a further improvement of this utility model: a motor speed detector is electrically fixedly connected to the middle of the front end of the positioning frame, and a motor output shaft locking port is provided at the middle of the front end of the motor speed detector.

[0008] As a further improvement of this utility model: the motor output shaft lock has an inner cavity, and a compression spring rod is slidably connected to the inner wall surface of the motor output shaft lock.

[0009] As a further embodiment of this utility model: the outer middle of the compression spring rod is fixedly connected to the spring rod limiting washer by an internal thread in the inner cavity, and the inner middle of the compression spring rod is engaged with the output shaft clamping lock plate on all four sides of the inner wall surface of the motor output shaft lock.

[0010] As a further improvement of this utility model: the bottom right side of the motor test bracket is electrically fixedly connected to a hydraulic detector, and the bottom middle of the hydraulic detector is electrically fixedly connected to an oil inlet pipe bifurcation pressure sensor.

[0011] As a further embodiment of this utility model: the outer surface of the end of the oil inlet pipe bifurcation pressure sensor is engaged and fixedly connected to the inner surface of the hydraulic motor oil inlet pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. Start the oil pump. The oil reservoir stores hydraulic oil. The oil pump draws oil from the reservoir through the oil pipe and delivers the hydraulic oil to the system. The check valve controls the oil circuit opening and closing, regulates the hydraulic oil flow, and thus controls the rate of pressure rise or fall. When the piston rod of the hydraulic cylinder extends, it applies pressure to the quarter-and-a-half-circular arc clamping plate connected to the piston rod, fixing the hydraulic motor in place. During the sliding process, the lower clamping plate guide rail facilitates the movement of the two sets of quarter-and-a-half-circular arc clamping plates on the lower side, allowing the rubber gaskets of the four sets of clamping plates to hold them in place. The motor positioning workbench, hydraulic motor positioning assembly, and lower clamping plate guide rail work together to adapt to the installation requirements of different models of hydraulic motors, achieving precise positioning and ensuring the accuracy and repeatability of the test. The rubber gaskets effectively protect the hydraulic motor, preventing mechanical damage during testing from affecting its performance and lifespan, and reducing motor displacement and maintaining test stability in vibration environments.

[0013] 2. Loosen the positioning screws, adjust the height of the positioning frame according to the model of the hydraulic motor, and tighten the positioning screws to keep the position of the positioning frame stable. Make the output shaft of the hydraulic motor contact the motor output shaft locking jaw of the motor speed detector, and apply pressure to the output shaft clamping locking plate. This compresses the spring rod, causing its end to enter the inner cavity. The spring rod then rebounds, pushing the output shaft clamping locking plate to firmly hold the hydraulic motor's output shaft, achieving a stable fixation and preventing shaking or displacement during testing. Through the cooperation of the height adjustment frame, longitudinal groove, positioning frame, and positioning screws, different specifications of hydraulic motors can be quickly and accurately positioned, adapting to the testing needs of various models. Compared to the traditional single-specification installation structure, this greatly shortens installation time and improves testing efficiency. When batch testing different models of hydraulic motors, there is no need to frequently change or adjust the entire installation structure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a hydraulic motor pressure testing device.

[0015] Figure 2 This is a schematic diagram of the hydraulic motor positioning component in a hydraulic motor pressure testing device.

[0016] Figure 3 This is a schematic diagram of the speed and height adjustment frame in a hydraulic motor pressure testing device.

[0017] Figure 4 This is a schematic diagram of the structure of a hydraulic detector in a hydraulic motor pressure testing device.

[0018] Figure 5 This is a planar schematic diagram of the lock joint of the output shaft of the tachometer in a hydraulic motor pressure testing device.

[0019] In the diagram: 1-Motor positioning workbench, 2-Motor test bracket, 3-Hydraulic motor positioning assembly, 4-Hydraulic cylinder, 5-Oil reservoir, 6-Oil suction pipe, 7-Oil suction pump, 8-Stop valve, 9-Piston hydraulic rod, 10-Four-half arc clamping plate, 11-Lower clamping plate guide rail, 12-Rubber pad, 13-Height adjustment frame, 14-Longitudinal groove, 15-Positioning frame, 16-Positioning screw, 17-Motor speed detector, 18-Motor output shaft lock, 19-Inner cavity, 20-Compression spring rod, 21-Spring rod limit pad, 22-Output shaft clamping lock plate, 23-Hydraulic detector, 24-Oil inlet pipe bifurcation pressure sensor, 25-Hydraulic motor oil inlet pipe. Detailed Implementation

[0020] Please see Figures 1-5In this embodiment of the utility model, a hydraulic motor pressure testing device includes a motor positioning workbench 1, a motor testing bracket 2, a hydraulic motor positioning assembly 3, a hydraulic cylinder 4, an oil storage bottle 5, an oil extraction pipe 6, an oil extraction pump 7, a check valve 8, a piston hydraulic rod 9, a quarter-and-a-half-circular arc clamping plate 10, a lower clamping plate guide rail 11, a rubber gasket 12, a height adjustment bracket 13, a longitudinal groove 14, a positioning bracket 15, a positioning screw 16, a motor speed detector 17, a motor output shaft locking port 18, an inner cavity 19, a compression spring rod 20, a spring rod limiting gasket 21, an output shaft clamping locking plate 22, a hydraulic detector 23, an oil inlet pipe bifurcation pressure sensor 24, and a hydraulic motor oil inlet pipe 25. The motor positioning workbench... A motor test bracket 2 is welded and fixedly connected to the rear side of the top of the platform 1. A hydraulic motor positioning assembly 3 is fixedly connected to the left and right sides of the top of the motor positioning platform 1. A hydraulic cylinder 4 is welded and fixedly connected to the top of the hydraulic motor positioning assembly 3 laterally. An oil storage bottle 5 is welded and fixedly connected to the middle of the outer side of the hydraulic cylinder 4. An oil suction pipe 6 is fixedly connected to the upper and lower right ends of the oil storage bottle 5. An oil pump 7 and a stop valve 8 are fixedly connected to the outer wall of the oil suction pipe 6. A piston hydraulic rod 9 is connected to the inner wall of the hydraulic cylinder 4 via piston sliding. A quarter-and-a-half-circular arc clamping plate 10 is welded and fixedly connected to the inner side of the piston hydraulic rod 9. A rubber gasket 12 is fixedly connected to the inner side of the quarter-and-a-half-circular arc clamping plate 10. The bottom of the quarter-and-a-half-circular arc clamping plate 10 is welded and fixedly connected to the lower clamping plate guide rail 11 at the center of the front lower side of the positioning workbench 1. The height adjustment frame 13 is longitudinally engaged and fixedly connected at the center of the front lower side of the motor test bracket 2. Both ends of the height adjustment frame 13 have longitudinal grooves 14. The outer surface of the height adjustment frame 13 is slidably connected to the positioning frame 15. The positioning screws 16 are threaded through the center of the left and right ends of the positioning frame 15 and fixedly connected to the inner side of the longitudinal grooves 14. The front center of the positioning frame 15 is electrically fixedly connected to the motor speed detector 17. The front center of the motor speed detector 17 has a motor output shaft locking port 18. The device has an internal cavity 19. A compression spring rod 20 is slidably connected to the inner wall surface of the motor output shaft locking port 18. A spring rod limiting washer 21 is threadedly fixed to the outer middle of the compression spring rod 20 inside the internal cavity 19. An output shaft clamping locking plate 22 is snapped onto the inner middle of the inner side of the compression spring rod 20, which is located on the inner wall surface of the motor output shaft locking port 18. A hydraulic detector 23 is electrically fixedly connected to the bottom right side of the motor test bracket 2. An oil inlet pipe bifurcation pressure sensor 24 is electrically fixedly connected to the bottom middle of the hydraulic detector 23. The outer surface of the end of the oil inlet pipe bifurcation pressure sensor 24 is snapped onto the inner surface of the hydraulic motor inlet port and fixedly connected to the hydraulic motor inlet pipe 25.

[0021] The working principle of this utility model is as follows: When using this utility model, firstly, the operator places the hydraulic motor between the four-and-a-half-circular arc clamping plates 10, starts the oil pump 7, stores hydraulic oil in the oil reservoir 6, and the oil pump 7 draws oil from the oil reservoir 5 through the oil pipe 6, delivering the hydraulic oil to the system. The stop valve 8 is used to control the oil circuit opening and closing, adjust the hydraulic oil flow rate, and thus control the rate of pressure increase or decrease. When the piston hydraulic rod 9 of the hydraulic cylinder 4 extends, it applies pressure to the four-and-a-half-circular arc clamping plate 10 connected to the piston hydraulic rod 9, causing the four-and-a-half-circular arc clamping plate 10 to exert pressure on the hydraulic motor. To fix the position, during the sliding process of the four-and-a-half-circular arc clamping plate 10, the lower clamping plate guide rail 11 facilitates the movement of the two sets of four-and-a-half-circular arc clamping plates 10 on the lower side, so that the rubber gaskets 12 of the four sets of four-and-a-half-circular arc clamping plates 10 are clamped. Then, loosen the positioning screw 16, adjust the height of the positioning frame 15 according to the model of the hydraulic motor, and tighten the positioning screw 16 to keep the position of the positioning frame 15 stable, so that the output shaft of the hydraulic motor contacts the motor output shaft locking port 18 of the motor speed detector 17, and applies pressure to the output shaft clamping locking plate 22 to compress the spring. The spring rod 20 is compressed, and the end of the compressed spring rod 20 enters the inner cavity 19. The compressed spring rod 20 rebounds and pushes the output shaft clamping locking plate 22, tightly holding the output shaft of the hydraulic motor, thus achieving a stable fixation of the output shaft and preventing shaking or displacement during testing. The motor speed detector 17 is installed on the outer surface of the output shaft, which can monitor the speed of the hydraulic motor output shaft in real time, providing speed data reference for pressure testing and ensuring that the test is carried out under the specified speed conditions. Finally, the hydraulic motor oil inlet pipe 25 is inserted into the oil inlet of the hydraulic motor, responsible for delivering high-pressure hydraulic oil to the hydraulic motor. To power its operation, the inlet pipe bifurcation pressure sensor 24 is installed at the bifurcation of the hydraulic motor inlet pipe 25 and is directly connected to the high-pressure oil circuit inside the hydraulic motor inlet pipe 25. It can sense the pressure change of the hydraulic oil in the hydraulic motor inlet pipe 25 in real time. The inlet pipe bifurcation pressure sensor 24 converts the sensed pressure signal into an electrical signal and transmits it to the hydraulic detector 23. The hydraulic detector 23 processes, analyzes and converts the received electrical signal and finally displays it in the form of an intuitive pressure value, which is convenient for testers to monitor the pressure of the hydraulic motor inlet in real time.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydraulic motor pressure testing device, comprising a motor positioning workbench (1), a motor testing bracket (2), a hydraulic motor positioning assembly (3), a height adjustment frame (13), and a hydraulic detector (23), characterized in that, The motor positioning workbench (1) is welded and fixedly connected to the rear side of the top end of the motor positioning workbench (1). The top end of the motor positioning workbench (1) is fixedly connected to the left and right sides of the front end of the motor positioning workbench (1). The top end of the hydraulic motor positioning workbench (3) is welded and fixedly connected to the hydraulic cylinder (4) in the horizontal direction. The oil storage bottle (5) is welded and fixedly connected to the middle of the outer side of the hydraulic cylinder (4). The oil pump (6) is fixedly connected to the right end of the upper and lower sides of the oil storage bottle (5). The oil pump (7) and the stop valve (8) are fixedly connected to the outer wall surface of the oil pump (6) respectively. The piston slides and connects to the piston hydraulic rod (9) on the inner wall surface of the hydraulic cylinder (4). The four-and-a-half arc clamping plate (10) is welded and fixedly connected to the inner side of the piston hydraulic rod (9). The rubber gasket (12) is fixedly connected to the inner side of the four-and-a-half arc clamping plate (10). The bottom of the four-and-a-half arc clamping plate (10) is welded and fixedly connected to the middle of the front end of the motor positioning workbench (1). The lower clamping plate guide rail (11) is welded and fixedly connected to the bottom of the four-and-a-half arc clamping plate (10).

2. The hydraulic motor pressure testing device according to claim 1, characterized in that, The height adjustment bracket (13) is longitudinally engaged and fixed at the middle of the lower front end of the motor test bracket (2). Both ends of the height adjustment bracket (13) have longitudinal grooves (14).

3. The hydraulic motor pressure testing device according to claim 2, characterized in that, The outer surface of the height adjustment frame (13) slides to connect to the positioning frame (15), and the positioning frame (15) is fixedly connected to the positioning screw (16) through the inner side of the longitudinal groove (14) at the middle of the left and right ends.

4. The hydraulic motor pressure testing device according to claim 3, characterized in that, The positioning frame (15) is electrically fixedly connected to the motor speed detector (17) at the middle of its front end, and the motor speed detector (17) has a motor output shaft lock slot (18) at the middle of its front end.

5. The hydraulic motor pressure testing device according to claim 4, characterized in that, The motor output shaft lock (18) has an inner cavity (19) inside, and compression spring rods (20) are slidably connected to the inner wall surface of the motor output shaft lock (18) around its perimeter.

6. The hydraulic motor pressure testing device according to claim 5, characterized in that, The compression spring rod (20) is fixedly connected to the inner thread of the inner cavity (19) by the middle of the outer side of the spring rod (20), and the output shaft clamping lock plate (22) is engaged and connected to the inner wall surface of the motor output shaft lock (18) by the middle of the inner side of the compression spring rod (20).

7. The hydraulic motor pressure testing device according to claim 1, characterized in that, The bottom right side of the motor test bracket (2) is electrically fixed to the hydraulic detector (23), and the bottom middle of the hydraulic detector (23) is electrically fixed to the oil inlet pipe bifurcation pressure sensor (24).

8. A hydraulic motor pressure testing device according to claim 7, characterized in that, The outer surface of the end of the oil inlet pipe bifurcation pressure sensor (24) is engaged and fixedly connected to the hydraulic motor oil inlet pipe (25) on the inner surface of the hydraulic motor oil inlet.

Images