An adaptive, multi-dimensional adjustable hydraulic motor noise testing platform

Abstract

This invention discloses an adaptive multi-dimensional adjustable hydraulic motor noise testing platform, comprising a support platform. The platform is characterized by a first conveyor plate symmetrically arranged on one side of its upper surface, with a second conveyor plate installed between them, the first and second conveyor plates being staggered. Above the second conveyor plate, a soundproof enclosure is installed via a first telescopic rod to provide a sealed testing environment for the hydraulic motor. Clamping components for holding the hydraulic motor under test are symmetrically arranged on both sides of the support platform and within the soundproof enclosure. When the first and second conveyor plates rotate simultaneously to transport the hydraulic motor under test, the clamping components move closer together, while the soundproof enclosure gradually lowers. When the hydraulic motor test is completed, the clamping components move away from each other, releasing the hydraulic motor, while the soundproof enclosure gradually rises until the top of the tested hydraulic motor is exposed outside the enclosure. The advantages of this design are that it expands the applicability of the testing platform and improves the accuracy and versatility of noise testing.

Description

Technical Field

[0001] This invention relates to the technical field of motor noise detection, and in particular to an adaptive multi-dimensional adjustable hydraulic motor noise testing platform. Background Technology

[0002] Hydraulic motors are actuators in hydraulic systems, converting the fluid pressure energy provided by a hydraulic pump into mechanical energy at their output shaft. They have important applications in injection molding machinery, shipbuilding, hoisting machinery, construction machinery, and other fields. With the development of hydraulic motors towards higher speeds, higher pressures, and higher power, their noise levels are increasingly attracting the attention of manufacturers and users. Accurate testing and evaluation of hydraulic motor noise helps control the negative impact of hydraulic system noise on operator health and provides data support for continuous product improvement. Hydraulic engineers can use the noise test results of hydraulic motors to optimize the design of noise-reducing structures or adopt new materials and processes to reduce noise levels and improve the overall competitiveness of the product.

[0003] For example, Chinese Patent CN117109725A discloses a motor noise testing mechanism, providing a motor noise testing mechanism that enables rapid motor installation and has automatic guiding and limiting functions. It includes a base plate, a microphone module, a positioning connecting plate, a magnetic conductive component, and a motor clamp. The microphone module is fixedly connected to the upper part of the base plate, and the positioning connecting plate is fixedly connected to the lower end face of the base plate. The motor clamp is magnetically attracted and adhered to the positioning connecting plate. The positioning connecting plate has a pre-reserved slot and an opening. The pre-reserved slot is located on one side of the positioning connecting plate, and the magnetic conductive component is located at the pre-reserved slot and is conductively connected to the motor clamp. The opening is located in the middle of the positioning connecting plate, and the microphone module cooperates with the motor clamp through the opening to detect motor noise.

[0004] However, this hydraulic motor noise testing mechanism has certain limitations in terms of flexibility and adaptability. Specifically, it is generally difficult to dynamically adjust the noise testing space to adapt to changes in the sound reflection plane at different distances, which limits its ability to effectively test the noise of hydraulic motors of various sizes and specifications. Furthermore, during the testing process, it is difficult to adjust the distance between each sound reflection plane and the geometric center of the hydraulic motor in real time, thus making it impossible to systematically analyze the noise transmission characteristics of the hydraulic motor. Given these challenges, it can be seen that existing hydraulic motor noise testing mechanisms still have considerable room for improvement in terms of the adjustability of the testing environment and the flexibility of the testing process, in order to more accurately and comprehensively evaluate the noise performance of hydraulic motors. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an adaptive multi-dimensional adjustment hydraulic motor noise testing platform that expands the applicability of the testing platform and improves the accuracy and versatility of noise testing.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an adaptive multi-dimensional adjustable hydraulic motor noise test platform, including a support platform, a first conveyor plate symmetrically arranged on one side of the upper surface of the support platform, a second conveyor plate installed between the first conveyor plates, and the first conveyor plate and the second conveyor plate being staggered.

[0007] A soundproof enclosure for providing a sealed testing environment for the hydraulic motor is provided above the second conveyor plate via a first telescopic rod; clamping components for holding the hydraulic motor under test are symmetrically arranged on both sides of the support platform and inside the soundproof enclosure.

[0008] When the first conveyor plate and the second conveyor plate rotate simultaneously to transport the hydraulic motor under test, the clamping members move closer to each other until they clamp the hydraulic motor under test. At the same time, the soundproof cover gradually descends until the soundproof cover and the second conveyor plate completely seal and cover the hydraulic motor under test. When the hydraulic motor test is completed, the clamping members move away from each other to release the hydraulic motor. At the same time, the soundproof cover gradually rises until the top of the tested hydraulic motor is exposed outside the soundproof cover.

[0009] Furthermore, the soundproof enclosure includes four soundproof panels, which are rectangularly distributed on the second conveyor plate. An L-shaped sealing plate is also provided between two adjacent soundproof panels. The sealing plate is slidably disposed with the soundproof panels. A lifting plate is provided above the soundproof panels, and flexible soundproof material is installed between the lifting plate and the soundproof panels.

[0010] Furthermore, the clamping component includes a bidirectional screw, which is rotatably mounted on the support platform along the width direction of the support platform. The two ends of the bidirectional screw are connected by threads to clamping rods that can move along the width direction of the support platform. The clamping rods are provided with claws by torsion spring hinges, and elastic material is installed on the side of the claws near the second conveyor plate.

[0011] Furthermore, the support platform is provided with a synchronizing element for synchronizing the soundproof cover and the bidirectional screw. The synchronizing element includes a connecting shaft, and two adjacent first telescopic rods on the same side are provided with a connecting plate. The connecting shaft is rotatably mounted on the connecting plate, and the end of the connecting shaft away from the soundproof cover is connected to the bidirectional screw via belt drive. A synchronizing gear is installed at the end of the connecting shaft close to the soundproof cover, and a synchronizing rack that meshes with the synchronizing gear is connected to the soundproof cover.

[0012] Furthermore, the support platform is provided with a linkage component that drives the first conveyor plate and the second conveyor plate to work synchronously. The linkage component includes a first synchronous wheel and a second synchronous wheel. The first synchronous wheel is rotatably mounted on the support platform and connected to the drive shaft of the first conveyor plate. The second synchronous wheel is rotatably mounted on the support platform and connected to the driven wheel of the second conveyor plate. A synchronous belt is fitted on both the first synchronous wheel and the second synchronous wheel. The diameter of the first synchronous wheel is larger than the diameter of the second synchronous wheel.

[0013] Furthermore, the support platform is also equipped with a mating component that drives the first synchronous pulley and the bidirectional screw to work together. The mating component includes a mating shaft, which is rotatably mounted on the support platform and coaxially arranged with the first synchronous pulley. The end of the mating shaft away from the first synchronous pulley is connected to the bidirectional screw via belt drive. A drive motor is mounted on the support platform, and the output end of the drive motor is connected to the mating shaft.

[0014] Furthermore, the mating component also includes a mating ring, a mating groove is provided in the first synchronous pulley, and a ratchet groove communicating with the mating groove is also provided on the first synchronous pulley. The mating ring is disposed in the mating groove and sleeved on the mating shaft, and ratchet teeth are installed on the mating ring by a torsion spring.

[0015] Furthermore, an oil circuit module is installed on the lifting plate. The oil circuit module includes a fixed bracket, which is located on the side of the lifting plate near the sound insulation plate. An oil inlet pipe and an oil return pipe connected to an external oil supply device are installed on the fixed bracket.

[0016] Furthermore, the support platform is provided with a first driving component that drives the sound insulation plate to move in its width direction, a second driving component that drives the sealing plate to move in its length direction, and a third driving component that drives the lifting plate to move up and down.

[0017] Furthermore, the first driving component includes a bidirectional cylinder, with each of its two output ends connected to a moving block. The moving blocks are fixedly mounted on the fixing rods of the two first telescopic rods on the same side, and are located below the second conveying plate. The second driving component includes a bidirectional cylinder, which is disposed on the sound insulation plate, and its output ends are respectively connected to the two adjacent sealing plates. The third driving component includes two second telescopic rods, which are correspondingly disposed on the two sound insulation plates arranged along the length of the support platform. The top output ends of the two second telescopic rods are jointly mounted with a horizontal lifting rod connected to the lifting plate.

[0018] Compared with the prior art, the advantages of the present invention are as follows:

[0019] This invention can dynamically adjust the noise test space according to hydraulic motors of different sizes. By adjusting the distance between the geometric center of the hydraulic motor and the noise reflection plane through the soundproof cover, it can adapt to the changing requirements of the sound reflection plane at different distances, thus expanding the applicability of the test platform.

[0020] Second, this invention sets up a clamping rod and hinges a chuck on the clamping rod. The upper end of the chuck can drive the hydraulic motor to rise a certain distance along with the rotation of the chuck during the rotation process. In this way, the hydraulic motor will not come into contact with the second transmission plate during the test, reducing the impact of the vibration of the second transmission plate on the noise test of the hydraulic motor and improving the accuracy of the noise test.

[0021] Third, by setting up a connecting part, the present invention enables the rotating shaft to rotate through an external drive, thereby adjusting the rotation angle of the oil inlet pipe and the oil return pipe. It is applicable to hydraulic motors with different oil port installation positions and has versatility. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a partial structural schematic diagram of the present invention;

[0024] Figure 3 This is a structural schematic diagram of the clamping component and the linkage component of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure that drives the soundproof cover to rise and fall according to the present invention;

[0026] Figure 5 This is the present invention. Figure 4 Schematic diagram of the structure at point A;

[0027] Figure 6 This is a schematic diagram of the power structure of the first synchronous pulley of the present invention;

[0028] Figure 7 This is a schematic diagram of the internal structure of the first synchronous pulley of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the soundproof cover of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure of the connector of the present invention;

[0031] The following labels are used in the diagram: 1. Support platform; 10. First conveyor plate; 11. Second conveyor plate; 12. Soundproof enclosure; 120. Soundproof panel; 121. Sealing plate; 122. Lifting plate; 123. Flexible sound insulation material;

[0032] 2. Clamping component; 20. Double-acting screw; 21. Clamping rod; 22. Claw; 23. Elastic material;

[0033] 3. First telescopic pole; 31. Connecting plate;

[0034] 4. Synchronizing component; 40. Connecting shaft; 41. Synchronizing gear; 42. Synchronizing rack;

[0035] 5. Linkage component; 50. First synchronous pulley; 51. Second synchronous pulley; 52. Synchronous belt;

[0036] 6. Mating component; 60. Mating shaft; 61. Drive motor; 62. Mating ring; 63. Mating groove; 64. Ratchet; 65. Ratchet tooth;

[0037] 7. Oil circuit module; 70. Fixed bracket; 71. Oil inlet pipe; 72. Oil return pipe;

[0038] 8. Connecting component; 80. Rotating shaft; 81. Drive ring; 82. Third telescopic rod; 90. Drive component one; 901. Double-acting cylinder one; 902. Moving block; 91. Drive component two; 910. Double-acting cylinder two; 92. Drive component three; 920. Second telescopic rod; 921. Horizontal lifting rod. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0040] This application discloses an adaptive multi-dimensional adjustable hydraulic motor noise testing platform. It is noted that this hydraulic motor noise testing platform is mainly used in the process of hydraulic motor testing, and in terms of technical effect, it can avoid the problem of only being able to conduct experimental tests on a single motor.

[0041] Example 1: An adaptive multi-dimensional adjustable hydraulic motor noise testing platform.

[0042] Reference Figure 1 , Figure 3 and Figure 8 As shown, the system includes a support platform 1. A first conveyor plate 10 is symmetrically arranged on one side of the upper surface of the support platform 1. A second conveyor plate 11 is installed between the first conveyor plates 10. The hydraulic motor is transported from the first conveyor plate 10 to the second conveyor plate 11, and then a noise test is conducted on the second conveyor plate 11. The first conveyor plate 10 and the second conveyor plate 11 are staggered to prevent the hydraulic motor on the first conveyor plate 10 from colliding or tilting due to the arc shape of the edges of the first conveyor plate 10 and the second conveyor plate 11 when it moves to the second conveyor plate 11, which would affect the transportation.

[0043] A soundproof enclosure 12 is installed above the second conveyor plate 11 via the first telescopic rod 3. The soundproof enclosure 12, in cooperation with the second conveyor plate 11, provides a sealed testing environment for the hydraulic motor. The soundproof enclosure 12 includes a sound level meter (not shown in the figure) for conducting noise tests on the hydraulic motor. The sound level meter is an existing device for testing the noise of hydraulic motors, and will not be described in detail hereafter.

[0044] The support platform 1 is also equipped with a clamping member 2 that clamps the hydraulic motor and corresponds to the soundproof cover 12. When the hydraulic motor moves to the length corresponding to the test chamber of the soundproof cover 12, it is clamped by the clamping member 2 to prevent the hydraulic motor from vibrating and shifting during operation.

[0045] Reference Figure 2 and Figure 3 The diagram shows a schematic of the structure for clamping the hydraulic motor. Specifically, the clamping component 2 includes a bidirectional screw 20, a clamping rod 21, a jaw 22, and an elastic material 23. The bidirectional screw 20 is rotatably mounted on the support platform 1 along its width. The clamping rod 21, which can move back and forth along the width of the support platform 1, is threaded onto both ends of the bidirectional screw 20. The clamping rod 21 is located in a limiting groove on the support platform 1. The jaw 22 is hinged to the clamping rod 21 by a torsion spring. The elastic material 23 is installed on the side of the jaw 22 closest to the second conveyor plate 11. A pin is installed at the hinge point between the clamping rod 21 and the jaw 22, and the torsion spring is fitted onto the pin as a fulcrum for rotation. One end of the torsion spring is fixed to the clamping rod 21, and the other end is fixed to the jaw 22. When the jaw 22 is opened by an external force, the torsion spring twists further, storing elastic potential energy. After the external force disappears, the spring rebounds, causing the jaw 22 to automatically return to its initial state. Because the support platform 1 limits the clamping rod 21, the clamping rod 21 will not rotate due to the rotation of the bidirectional screw 20, and thus can move along the length direction of the bidirectional screw 20 under the drive of the bidirectional screw 20.

[0046] When the jaws 22 on the two clamping rods 21 approach each other under the action of the bidirectional screw 20, they will move synchronously toward the hydraulic motor to clamp it. The function of the hinged jaws 22 is that the upper end of the jaws 22 will tilt toward the second conveyor plate 11 in the initial state. As the jaws 22 move with the clamping rods 21, the upper end of the jaws 22 will first contact the hydraulic motor. As the jaws 22 continue to move, they will rotate under the thrust of the clamping rods 21 and the reaction force of the hydraulic motor until the lower end of the jaws 22 contacts the hydraulic motor.

[0047] During this process, since the height of the hinge of the jaw 22 remains unchanged, the upper end of the jaw 22 will tend to rise in an arc shape during rotation. The jaws 22 on both sides work at the same time, which can drive the hydraulic motor to rise a certain distance following the rotation of the jaw 22. This ensures that the hydraulic motor will not come into contact with the second transmission plate 11 during the test, reducing the influence of the second transmission plate 11 on the noise test of the hydraulic motor, increasing the rigor of the experiment, and ensuring the accuracy of the experimental data.

[0048] Reference Figure 8 The diagram shows a structural schematic of a sealing test environment for a hydraulic motor. Specifically, the soundproof enclosure 12 includes four soundproof panels 120 arranged in a rectangle on the second conveyor plate 11. An L-shaped sealing plate 121 is also provided between adjacent soundproof panels 120. The sealing plate 121 slides on the soundproof panels 120, and a metal guide rail is provided on the sliding contact surface between the sealing plate 121 and the soundproof panel 120 for easy sliding. Furthermore, polyurethane material is provided on the inner wall of the sealing plate 121 and the outer wall of the soundproof panel 120, possessing wear resistance, high elasticity, and a low coefficient of friction. This ensures that the sliding between the sealing plate 121 and the soundproof panel 120 is not affected, while also preventing gaps between them, thus guaranteeing the airtightness of the internal space. A lifting plate 122 is provided above the soundproof panels 120, and a flexible soundproof material 123 is installed between the lifting plate 122 and the soundproof panel 120.

[0049] By controlling the relative sliding of the sealing plate 121 and the sound insulation plate 120 in the width direction of the support platform 1, the distance between the two sound insulation plates 120 in the width direction can be adjusted, and the width of the sealed space enclosed by the sound insulation plate 120 and the sealing plate 121 can be further adjusted. By controlling the relative sliding of the sealing plates 121 on both sides of the support platform 1 in the length direction, the length of the sealed space can be adjusted, and thus the length of the sealed space enclosed by the sound insulation plate 120 and the sealing plate 121 can be adjusted. By controlling the lifting plate 122 to move up and down within the sound insulation plate 120, the height of the sealed space can be adjusted. Through adjustments in multiple dimensions, the testing needs of hydraulic motors of different sizes can be adapted.

[0050] Due to the characteristics of the flexible sound insulation material 123, it will tilt when the lifting plate 122 rises, but it can adapt to the shape of the hydraulic motor and will not affect the noise test of the hydraulic motor. Sound insulation cotton (not shown in the figure) is installed on the inner walls of the sound insulation plate 120 and the sealing plate 121. The purpose of setting the sound insulation cotton is that, in a closed environment, the sound waves emitted by the hydraulic motor will be reflected and produce echoes after contacting the inner walls of the sound insulation plate 120 and the sealing plate 121. This echo can affect the accuracy of the noise test. Setting the sound insulation cotton can reduce the influence of echoes and further improve the accuracy of the test.

[0051] Reference Figure 4 and Figure 5 The diagram shows the structure of the soundproof cover 12. Specifically, the support platform 1 is equipped with a synchronizing element 4 for synchronizing the soundproof cover 12 with the bidirectional screw 20. The synchronizing element 4 includes a connecting shaft 40, a synchronizing gear 41, and a synchronizing rack 42. The two adjacent first telescopic rods 3 on the same side are equipped with a connecting plate 31. The connecting shaft 40 is rotatably mounted on the connecting plate 31, and the end of the connecting shaft 40 away from the soundproof cover 12 is connected to the bidirectional screw 20 by a belt drive. When the bidirectional screw 20 rotates, it will drive the connecting shaft 40 to rotate. The end of the connecting shaft 40 near the soundproof cover 12 is equipped with a synchronizing gear 41. The soundproof cover 12 is connected to a synchronizing rack 42 that meshes with the synchronizing gear 41. The rotation of the connecting shaft 40 drives the synchronizing gear 41 to rotate. Then, under the drive of the synchronizing gear 41, the synchronizing rack 42 that meshes with it is raised and lowered, thereby enabling the soundproof cover 12 to rise and fall on the support platform 1.

[0052] In the specific implementation process, the bidirectional screw 20 rotates clockwise, driving the two clamping rods 21 to move closer to each other. During this process, the synchronous gear 41 drives the synchronous rack 42 to descend, causing the soundproof cover 12 to descend. As the jaws 22 on the clamping rods 21 clamp the hydraulic motor, the soundproof cover 12 will descend slowly. When the jaws 22 completely clamp the hydraulic motor, the bottom surface of the soundproof cover 12 can contact the second transmission plate 11, so that a sealed test space is formed on the second transmission plate 11.

[0053] Conversely, after the test is completed, the bidirectional screw 20 rotates counterclockwise, the clamping rods 21 move away from each other, the soundproof cover 12 rises, and after the test is completed, the hydraulic motor continues to move forward using the second conveyor plate 11 for conveying and collecting.

[0054] The fixed rod of the first telescopic rod 3 is installed on the support platform 1, and the telescopic rod of the first telescopic rod 3 is installed on the sound insulation plate 120, which can accommodate the up and down movement of the first telescopic rod 3 on the support platform 1 without affecting the cooperation between the synchronous gear 41 and the synchronous rack 42.

[0055] Reference Figure 2 and Figure 3The diagram shows a structure that drives the first conveyor plate 10 and the second conveyor plate 11 to work synchronously. Specifically, the support platform 1 is provided with a linkage 5 that drives the drive shaft of the first conveyor plate 10 and the driven shaft of the second conveyor plate 11 to work synchronously. The linkage 5 includes a first synchronous wheel 50, a second synchronous wheel 51, and a synchronous belt 52. The first synchronous wheel 50 is rotatably mounted on the support platform 1 and connected to the drive shaft of the first conveyor plate 10. The second synchronous wheel 51 is rotatably mounted on the support platform 1 and connected to the driven shaft of the second conveyor plate 11. The first synchronous wheel 50 and the second synchronous wheel 51 are both fitted with a synchronous belt 52.

[0056] The operation of the first synchronous pulley 50, the second synchronous pulley 51, and the synchronous belt 52 drives the drive shaft of the first transmission plate 10 and the driven shaft of the second transmission plate 11 to work synchronously, thereby achieving the purpose of conveying the hydraulic motor.

[0057] The diameter of the first synchronous pulley 50 is larger than the diameter of the second synchronous pulley 51. This causes the second synchronous pulley 51 to rotate more times for the first synchronous pulley 50 to rotate once. This makes the speed of the second conveyor plate 11 faster than that of the first conveyor plate 10. As a result, when the hydraulic motor on the first conveyor plate 10 moves to the second conveyor plate 11, the distance between it and the next hydraulic motor is equal to the length of the test chamber of the soundproof cover 12. This facilitates accurate alignment between the hydraulic motor under test and the gripper 22, allowing for clamping tests on the second conveyor plate 11.

[0058] Reference Figure 6 and Figure 7 The diagram shows the structure that drives the second conveyor plate 11 to work in conjunction with the bidirectional screw 20. Specifically, the support platform 1 is also equipped with a mating component 6 that drives the first synchronous pulley 50 to work in conjunction with the bidirectional screw 20. The mating component 6 includes a mating shaft 60, a drive motor 61, a mating ring 62, a mating groove 63, a ratchet groove 64, and a ratchet tooth 65. The mating shaft 60 is rotatably mounted on the support platform 1 and is coaxially arranged with the first synchronous pulley 50. The end of the mating shaft 60 away from the first synchronous pulley 50 is connected to the bidirectional screw 20 via belt drive. The drive motor 61 is mounted on the support platform 1, and the output end of the drive motor 61 is connected to the mating shaft 60.

[0059] It should be noted that when the first synchronous pulley 50 rotates clockwise, the clamping rods 21 on the bidirectional screw 20 will move closer to each other. When the drive motor 61 drives the mating shaft 60 to rotate counterclockwise, the clamping parts 2 will move further apart. That is, during the process of the second conveyor plate 11 and the first conveyor plate 10 rotating synchronously to transport the hydraulic motor, the clamping rods 21 will move closer to the hydraulic motor and use the claws 22 on the clamping rods 21 to clamp the hydraulic motor.

[0060] The first synchronous pulley 50 has a mating groove 63, and the first synchronous pulley 50 also has a ratchet groove 64 that communicates with the mating groove 63. The mating ring 62 is located in the mating groove 63 and is sleeved on the mating shaft 60. The mating ring 62 is equipped with ratchet teeth 65 by a torsion spring.

[0061] Through the engagement of the ratchet 64 on the first synchronous pulley 50 and the ratchet 65 on the mating ring 62, when the mating shaft 60 rotates clockwise, it can drive the first synchronous pulley 50 to rotate, thereby driving the first transmission plate 10 and the second transmission plate 11 to work synchronously. At this time, the clamping rods 21 move closer to each other under the drive of the mating shaft 60 to clamp the hydraulic motor and test it. However, when the mating shaft 60 rotates counterclockwise, it will not drive the first synchronous pulley 50 to rotate. At this time, the first transmission plate 10 will not work, and the clamping rods 21 move away from each other under the drive of the mating shaft 60, releasing the clamp on the hydraulic motor.

[0062] Then, the shaft 60 rotates clockwise again, and the first conveyor plate 10 and the second conveyor plate 11 resume operation. The hydraulic motors that have been tested are transported out for collection. Then, the untested motors are transported to the second conveyor plate 11 again. During this process, the clamping rod 21 will approach the hydraulic motor again to clamp it, thereby realizing batch testing of multiple motors and improving the testing efficiency.

[0063] Reference Figure 8 as well as Figure 9 The diagram shows the structure that provides power to the hydraulic motor. Specifically, an oil circuit module 7 is installed on the lifting plate 122. The oil circuit module 7 includes a fixed bracket 70, which is located on the side of the lifting plate 122 near the sound insulation plate 120. An oil inlet pipe 71 and an oil return pipe 72 connected to an external oil supply device are installed on the fixed bracket 70.

[0064] In order to provide power to the hydraulic motor, the oil inlet pipe 71 and the oil return pipe 72 are connected to the connection port on the hydraulic motor respectively to transport hydraulic oil and form a circuit to provide driving force for the hydraulic motor. When the soundproof cover 12 is lowered, the oil inlet pipe 71 and the oil return pipe 72 on the fixed bracket 70 will be directly connected to the connection port on the hydraulic motor.

[0065] Reference Figure 1 and Figure 8The diagram shows a structural schematic for adjusting the test space for hydraulic motors of different sizes. Specifically, the support platform 1 is equipped with a drive component 90 that moves the sound insulation plate 120 in its width direction. The drive component 90 includes a bidirectional cylinder 901, with each of its two output ends connected to a moving block 902. The moving block 902 is fixedly mounted on the fixing rods of the two first telescopic rods 3 on the same side, and is located below the second transmission plate 11. By using the bidirectional cylinder 901 to move the moving block 902 relative to each other, the first telescopic rods 3 on the two moving blocks 902 are moved relative to each other, thereby adjusting the distance between the sound insulation plates 120 on the first telescopic rods 3 on both sides to adjust the width of the sealed space.

[0066] The support platform 1 is also equipped with a second driving component 91 that moves the sealing plates 121 along its length. The second driving component 91 includes a second bidirectional cylinder 910, which is mounted on the sound insulation plate 120, and its output end is connected to two adjacent sealing plates 121 respectively. The distance between the sealing plates 121 at both ends of the support platform 1 along its length is adjusted by the second bidirectional cylinder 910, thereby adjusting the length of the sealing space.

[0067] The support platform 1 is also equipped with a drive component 3 92 that drives the lifting plate 122 to move up and down. The drive component 3 92 includes two second telescopic rods 920, which are set on two sound insulation plates 120 arranged along the length of the support platform 1. The top output ends of the two second telescopic rods 920 are jointly equipped with a horizontal lifting rod 921 that is connected to the lifting plate 122.

[0068] The horizontal lifting plate 122 is raised and lowered by the lifting rod 921 to adjust the height of the sealed space.

[0069] Example 2: Based on Example 1, in order to further improve the applicability of the present invention, a connector 8 is also proposed, which is conducive to adjusting the position of the oil inlet pipe 71 and the oil return pipe 72, thereby adapting to the position of the oil inlet and outlet of different models of hydraulic motors, so that experimental tests can be carried out on different models of hydraulic motors.

[0070] Reference Figure 8 and Figure 9 The diagram shows the structure for adjusting the positions of the oil inlet pipe 71 and the oil return pipe 72. Specifically, the connector 8 includes a rotating shaft 80, which is rotatably installed in the cavity of the fixed bracket 70. A drive ring 81 is installed on the rotating shaft 80, and a third telescopic rod 82 is symmetrically installed on the drive ring 81 along the width direction of the fixed bracket 70. The telescopic section of the third telescopic rod 82 is fixedly connected to the side wall of the oil inlet pipe 71, and the telescopic section of the other third telescopic rod 82 is fixedly connected to the side wall of the oil return pipe 72.

[0071] The third telescopic rod 82 can adjust the distance between the oil inlet pipe 71 and the oil return pipe 72 by telescopic adjustment. Then, through external drive, the rotating shaft 80 can be rotated to adjust the rotation angle of the oil inlet pipe 71 and the oil return pipe 72. This can provide power for different models of hydraulic motors and conduct noise test experiments on different models of hydraulic motors.

[0072] During operation: First, the hydraulic motor is transported to the second conveyor plate 11 via the first conveyor plate 10. Since the first conveyor plate 10 moves slower than the second conveyor plate 11, the hydraulic motor on the first conveyor plate 10 will gradually move away from the second conveyor plate 11.

[0073] Step 2: During the conveying process of the second conveyor plate 11, when the soundproof cover 12 descends, the oil inlet and oil outlet on the fixed bracket 70 are connected to the connection port of the hydraulic motor.

[0074] Step 3: During this process, when the mating shaft 60 rotates clockwise, it drives the first synchronous pulley 50 to rotate. At this time, the clamping rods 21 move closer to each other under the drive of the mating shaft 60, clamping the hydraulic motor and then testing it.

[0075] Step 4: After the test is completed, when the mating shaft 60 rotates counterclockwise, the mating shaft 60 will not drive the first synchronous wheel 50 to rotate. The first transmission plate 10 and the second transmission plate 11 will both stop working. At this time, the clamping rods 21 will move away from each other under the drive of the mating shaft 60, releasing the clamp on the hydraulic motor.

[0076] Step 5: Next, the shaft 60 rotates clockwise again, and the first conveyor plate 10 and the second conveyor plate 11 resume operation. The hydraulic motors that have been tested are transported out for collection. Then, the untested hydraulic motors are transported to the second conveyor plate 11 again. During this process, the clamping rod 21 will approach the hydraulic motor again to clamp it. This process is repeated to perform the test.

[0077] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within the invention, and no reference numerals in the claims should be regarded as limiting the scope of the claims.

[0078] 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 self-adapting multi-dimension adjusted hydraulic motor noise test platform, comprising a support platform (1), characterized in that: The upper surface of the support platform (1) is symmetrically provided with first conveying plates (10) on one side, second conveying plates (11) are installed between the first conveying plates (10), and the first conveying plates (10) and the second conveying plates (11) are arranged in a staggered manner; A soundproof cover (12) for providing a sealed test environment for the hydraulic motor is arranged above the second conveying plates (11) through first telescopic rods (3); clamping pieces (2) for clamping the hydraulic motor to be tested are symmetrically arranged on both sides of the support platform (1) and located in the soundproof cover (12); When the first conveying plates (10) and the second conveying plates (11) simultaneously rotate to convey the hydraulic motor to be tested, the clamping pieces (2) are close to each other until the hydraulic motor to be tested is clamped, and at the same time, the soundproof cover (12) gradually descends until the soundproof cover (12) completely covers the hydraulic motor to be tested; when the hydraulic motor test is completed, the clamping pieces (2) are away from each other to release the hydraulic motor, and at the same time, the soundproof cover (12) gradually rises until the top of the tested hydraulic motor is exposed outside the soundproof cover (12); The soundproof cover (12) comprises four soundproof plates (120), the four soundproof plates (120) are arranged in a rectangular shape on the second conveying plates (11), and L-shaped sealing plates (121) are arranged between the adjacent two soundproof plates (120); the sealing plates (121) and the soundproof plates (120) are arranged in a sliding manner, and lifting plates (122) are arranged above the soundproof plates (120); flexible soundproof materials (123) are installed between the lifting plates (122) and the soundproof plates (120); The clamping piece (2) comprises a bidirectional screw rod (20), the bidirectional screw rod (20) is rotatably installed on the support platform (1) along the width direction of the support platform (1), and clamping rods (21) capable of moving along the width direction of the support platform (1) are installed at both ends of the bidirectional screw rod (20) through threaded connection; clamping jaws (22) are arranged on the clamping rods (21) through torsional spring hinging, the upper end of the clamping jaws (22) is inclined to the second conveying plates (11) in the initial state, and elastic materials (23) are installed on the side of the clamping jaws (22) close to the second conveying plates (11); The support platform (1) is provided with a driving piece one (90) for driving the soundproof plates (120) in the width direction of the support platform (1) to move, the support platform (1) is further provided with a driving piece two (91) for driving the sealing plates (121) in the length direction of the support platform (1) to move, and the support platform (1) is further provided with a driving piece three (92) for driving the lifting plates (122) to lift.

2. The self-adapting multi-dimension adjusted hydraulic motor noise test platform of claim 1, wherein: The support platform (1) is provided with a synchronizing part (4) for synchronizing the soundproof cover (12) and the bidirectional screw (20), the synchronizing part (4) comprises a connecting shaft (40), the same side of the two first telescopic rods (3) is provided with a connecting plate (31), the connecting shaft (40) is rotatably installed on the connecting plate (31), and the end of the connecting shaft (40) away from the soundproof cover (12) is connected with the bidirectional screw (20) in a belt transmission mode, the end of the connecting shaft (40) close to the soundproof cover (12) is provided with a synchronous gear (41), and the soundproof cover (12) is connected with a synchronous rack (42) engaged with the synchronous gear (41).

3. The self-adapting multi-dimension adjusted hydraulic motor noise test platform of claim 1, wherein: The support platform (1) is provided with a linkage part (5) for synchronizing the driving of the first conveying plate (10) and the second conveying plate (11), the linkage part (5) comprises a first synchronous wheel (50) and a second synchronous wheel (51), the first synchronous wheel (50) is rotatably arranged on the support platform (1) and connected with the driving shaft of the first conveying plate (10), the second synchronous wheel (51) is rotatably arranged on the support platform (1) and connected with the driven wheel of the second conveying plate (11), and the first synchronous wheel (50) and the second synchronous wheel (51) are jointly sleeved with a synchronous belt (52), and the diameter of the first synchronous wheel (50) is greater than that of the second synchronous wheel (51).

4. The self-adapting multi-dimension adjusted hydraulic motor noise test platform of claim 3, wherein: The support platform (1) is further provided with a matching part (6) for driving the first synchronous wheel (50) and the bidirectional screw (20) to work together, the matching part (6) comprises a matching shaft (60), the matching shaft (60) is rotatably arranged on the support platform (1) and coaxially arranged with the first synchronous wheel (50), one end of the matching shaft (60) away from the first synchronous wheel (50) is connected with the bidirectional screw (20) in a belt transmission mode, and a driving motor (61) is arranged on the support platform (1), and the output end of the driving motor (61) is connected with the matching shaft (60).

5. The self-adapting multi-dimension adjusted hydraulic motor noise test platform of claim 4, wherein: The matching part (6) further comprises a matching ring (62), the first synchronous wheel (50) is provided with a matching groove (63), the first synchronous wheel (50) is further provided with a ratchet groove (64) in communication with the matching groove (63), the matching ring (62) is arranged in the matching groove (63) and sleeved on the matching shaft (60), and the matching ring (62) is provided with a ratchet (65) through a torsional spring.

6. The self-adapting multi-dimension adjusted hydraulic motor noise test platform of claim 1, wherein: The lifting plate (122) is provided with an oil circuit module (7), the oil circuit module (7) comprises a fixed support (70), the fixed support (70) is arranged on one side of the lifting plate (122) close to the soundproof plate (120), and the fixed support (70) is provided with an oil inlet pipe (71) and an oil return pipe (72) in communication with an external oil supply device.

7. The self-adapting multi-dimension adjusted hydraulic motor noise test platform of claim 6, wherein: The driving member one (90) includes a bidirectional cylinder one (901), both output ends of the bidirectional cylinder one (901) are connected with a moving block (902), the moving block (902) is fixedly installed on the fixed rods of two first telescopic rods (3) on the same side, and the moving block (902) is located below the second conveying plate (11); the driving member two (91) includes a bidirectional cylinder two (910), the bidirectional cylinder two (910) is arranged on the sound insulation plate (120), and the output ends of the bidirectional cylinder two (910) are connected with two adjacent sealing plates (121) respectively; the driving member three (92) includes two second telescopic rods (920), the two second telescopic rods (920) are correspondingly arranged on two sound insulation plates (120) arranged along the length direction of the supporting platform (1), and the top output ends of the two second telescopic rods (920) are jointly installed with a horizontal lifting rod (921) connected with the lifting plate (122).

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