Self-adaptive multi-dimensional adjustment hydraulic motor noise test platform

Abstract

The invention discloses a self-adaptive multi-dimensional adjustment hydraulic motor noise test platform which comprises a supporting platform and is characterized in that first conveying plates are symmetrically arranged on one side of the upper surface of the supporting platform, a second conveying plate is installed between the first conveying plates, and the first conveying plates and the second conveying plate are arranged in a staggered mode; a sound insulation cover used for providing a sealing test environment for the hydraulic motor is arranged above the second conveying plate through a first telescopic rod. Clamping pieces used for clamping a hydraulic motor to be tested are symmetrically arranged on the two sides of the supporting platform and located in the acoustic shield. When the first conveying plate and the second conveying plate rotate at the same time to convey the hydraulic motor to be tested, the clamping pieces get close to each other, meanwhile, the acoustic hood gradually descends, when the hydraulic motor is tested, the clamping pieces get away from each other to loosen the hydraulic motor, and meanwhile, the acoustic hood gradually ascends until the top of the tested hydraulic motor is exposed out of the acoustic hood. The noise testing platform has the advantages that the application range of the testing platform is expanded, and the accuracy and universality of noise testing are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor noise detection, and particularly relates to a hydraulic motor noise test platform with adaptive multi-dimensional adjustment. Background Art

[0002] A hydraulic motor is an actuator in a hydraulic system that can convert the hydraulic pressure energy provided by a hydraulic pump into the mechanical energy of its output shaft, and has important applications in fields such as injection molding machinery, ships, hoisting machinery, construction machinery, and construction machinery. With the development of hydraulic motors towards high speed, high pressure, and high power, their noise has increasingly attracted the attention of manufacturers and users. Accurately testing and evaluating the noise of hydraulic motors helps to control the negative impact of the noise of the hydraulic system on the health of operators and provides data support for the continuous improvement of products. Hydraulic engineers can carry out the optimization design of noise reduction structures based on the noise test results of hydraulic motors, or adopt new materials and new processes to reduce the noise level and improve the overall competitiveness of products.

[0003] For example, Chinese Patent No. CN117109725A discloses a motor noise test mechanism, which provides a motor noise test mechanism that can achieve rapid installation of the motor and has automatic guiding and limiting functions. It includes a base plate, a sound collection module, a positioning connection plate, a magnetic conduction member, and a motor clamp. The sound collection module is fixedly connected to the upper part of the base plate, the positioning connection plate is fixedly connected to the lower end surface of the base plate, the motor clamp is in guiding magnetic attraction fit with the positioning connection plate. The positioning connection plate is provided with a reserved groove and an opening. The reserved groove is arranged on one side of the positioning connection plate, the magnetic conduction member is arranged at the reserved groove and is conductively connected to the motor clamp, and the opening is located in the middle of the positioning connection plate. The sound collection module cooperates with the motor clamp through the opening to detect the motor noise.

[0004] However, this hydraulic motor noise test mechanism has certain limitations in terms of flexibility and adaptability. Specifically, it is usually difficult for this mechanism to dynamically adjust the noise test space to meet the changing requirements of the sound reflection plane at different distances, which limits its ability to effectively test the noise of various sizes and specifications of hydraulic motors. In addition, during the test, it is very difficult to real-time adjust the distance between each sound reflection plane and the geometric center of the hydraulic motor, so the noise transmission characteristics of the hydraulic motor cannot be systematically analyzed. In view of the above challenges, it can be seen that there is still a large room for improvement in the existing hydraulic motor noise test mechanism in terms of improving the adjustability of the test environment and the flexibility of the test process, so as 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 a hydraulic motor noise test platform with adaptive multi-dimensional adjustment that expands the application range of the test platform and improves the accuracy and versatility of noise testing.

[0006] The technical solution adopted by the present invention to solve the above technical problems is as follows: An adaptive multi-dimensional adjustable hydraulic motor noise test platform, including a support platform, on one side of the upper surface of the support platform, first transfer plates are symmetrically arranged, a second transfer plate is installed between the first transfer plates, and the first transfer plates and the second transfer plate are arranged in a staggered manner; Above the second transfer plate, a sound insulation cover for providing a sealed test environment for the hydraulic motor is arranged through a first telescopic rod; on both sides of the support platform and inside the sound insulation cover, clamping members for clamping the hydraulic motor to be tested are symmetrically arranged; When the first transfer plate and the second transfer plate rotate simultaneously to convey the hydraulic motor to be tested, the clamping members approach each other until they clamp the hydraulic motor to be tested. At the same time, the sound insulation cover gradually descends until the sound insulation cover and the second transfer plate are hermetically closed to completely cover the hydraulic motor to be tested; when the hydraulic motor test is completed, the clamping members move away from each other to release the hydraulic motor, and at the same time, the sound insulation cover gradually rises until the top of the tested hydraulic motor is exposed outside the sound insulation cover.

[0007] Further, the sound insulation cover includes four sound insulation plates, the four sound insulation plates are distributed in a rectangle on the second transfer plate, an L-shaped sealing plate is also jointly arranged between adjacent two sound insulation plates, the sealing plate is slidably arranged with the sound insulation plate, a lifting plate is arranged above the sound insulation plate, and a flexible sound insulation material is jointly installed between the lifting plate and the sound insulation plate; Further, the clamping member includes a bidirectional screw, the bidirectional screw is rotatably installed on the support platform along the width direction of the support platform, clamping rods that can move along the width direction of the support platform are installed at both ends of the bidirectional screw by means of threaded connection, a claw is hinged on the clamping rod through a torsion spring, and an elastic material is installed on one side of the claw close to the second transfer plate.

[0008] Further, a synchronizing member for enabling the sound insulation cover and the bidirectional screw to work synchronously is arranged on the support platform. The synchronizing member includes a connecting shaft, a connecting plate is jointly arranged on two adjacent first telescopic rods on the same side, the connecting shaft is rotatably installed on the connecting plate, and the end of the connecting shaft far from the sound insulation cover is connected to the bidirectional screw by means of belt transmission. A synchronizing gear is installed at the end of the connecting shaft close to the sound insulation cover, and a synchronizing rack meshing with the synchronizing gear is connected to the sound insulation cover.

[0009] Furthermore, a linkage member for driving the first transmission plate and the second transmission plate to work synchronously is provided on the support platform, and the linkage member includes a first synchronous wheel and a second synchronous wheel. The first synchronous wheel is rotatably provided on the support platform and is connected to the driving shaft of the first transmission plate, and the second synchronous wheel is rotatably provided on the support platform and is connected to the driven wheel of the second transmission plate. A synchronous belt is commonly provided on the first synchronous wheel and the second synchronous wheel, and the diameter of the first synchronous wheel is larger than the diameter of the second synchronous wheel.

[0010] Furthermore, a mating part for driving the first synchronous wheel and the bidirectional screw to work in linkage is also installed on the support platform, and the mating part includes a mating shaft, and the mating shaft is rotatably arranged on the support platform and coaxially arranged with the first synchronous wheel. The end of the mating shaft away from the first synchronous wheel is connected to the bidirectional screw through a belt drive, and a driving motor is installed on the support platform, and the output end of the driving motor is connected to the mating shaft.

[0011] Furthermore, the mating part also includes a mating ring, a mating groove is provided in the first synchronous wheel, a ratchet groove connected to the mating groove is also provided on the first synchronous wheel, the mating ring is arranged in the mating groove and sleeved on the mating shaft, and a ratchet is installed on the mating ring through a torsion spring.

[0012] Furthermore, an oil circuit module is installed on the lifting plate, and the oil circuit module includes a fixed bracket, which is arranged on a side of the lifting plate close to the sound insulation board, and an oil inlet pipe and an oil return pipe connected to an external oil supply device are installed on the fixed bracket.

[0013] Furthermore, the support platform is provided with a driving member 1 for driving the sound insulation board to move in its width direction, the support platform is also provided with a driving member 2 for driving the sealing board to move in its length direction, and the support platform is also installed with a driving member 3 for driving the lifting plate to move up and down.

[0014] Further, the driving member 1 includes a bidirectional cylinder 1, and the two output ends of the bidirectional cylinder 1 are respectively connected to moving blocks, and the moving blocks are fixedly installed on the fixed rods of the two first telescopic rods on the same side, and the moving blocks are located below the second conveying plate; the driving member 2 includes a bidirectional cylinder 2, and the bidirectional cylinder 2 is arranged on the sound insulation board, and the output ends of the bidirectional cylinder 2 are respectively connected to the two adjacent sealing plates; the driving member 3 includes two second telescopic rods, and the two second telescopic rods are correspondingly arranged on the two sound insulation boards arranged along the length direction of the supporting platform, and the top output ends of the two second telescopic rods are jointly installed with a horizontal lifting rod connected to the lifting plate.

[0015] Compared with the prior art, the advantages of the present invention are: The present invention can dynamically adjust the noise test space according to hydraulic motors of different sizes, and adjust the distance between the geometric center of the hydraulic motor and the noise reflection plane through a sound insulation cover to meet the changing requirements of the sound reflection plane at different distances, thereby expanding the applicable range of the test platform.

[0016] Second, by providing a clamping rod and hingedly installing a clamping jaw on the clamping rod, the upper end of the clamping jaw can drive the hydraulic motor to rise a certain distance during rotation, so that the hydraulic motor will not come into contact with the second transfer plate during the test, reducing the impact of the vibration of the second transfer plate on the noise test of the hydraulic motor and improving the accuracy of the noise test.

[0017] Third, by providing a connecting member and rotating the rotating shaft through external drive, the rotation angles of the oil inlet pipe and the oil return pipe can be adjusted, which is applicable to hydraulic motors with different oil port installation positions and has universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the partial structural schematic diagram of the present invention; Figure 3 is the structural schematic diagram of the clamping member and the linkage member of the present invention; Figure 4 is the structural schematic diagram for driving the sound insulation cover to lift and lower of the present invention; Figure 5 is the present invention Figure 4 structural schematic diagram at position A in; Figure 6 is the power structural schematic diagram of the first synchronous pulley of the present invention; Figure 7 is the internal structural schematic diagram of the first synchronous pulley of the present invention; Figure 8 is the structural schematic diagram of the sound insulation cover of the present invention; Figure 9 is the structural schematic diagram of the connecting member of the present invention; The markings in the figures are as follows: 1. Support platform; 10. First transfer plate; 11. Second transfer plate; 12. Sound insulation cover; 120. Sound insulation board; 121. Sealing plate; 122. Lifting plate; 123. Flexible sound insulation material; 2. Clamping member; 20. Bidirectional screw; 21. Clamping rod; 22. Clamping jaw; 23. Elastic material; 3. First telescopic rod; 31. Connecting plate; 4. Synchronizing member; 40. Connecting shaft; 41. Synchronizing gear; 42. Synchronizing rack; 5. Linkage member; 50. First synchronous pulley; 51. Second synchronous pulley; 52. Synchronous belt; 6. Fitting parts; 60. Fitting shaft; 61. Driving motor; 62. Fitting ring; 63. Fitting groove; 64. Ratchet groove; 65. Ratchet teeth 7. Oil circuit module; 70. Fixed bracket; 71. Inlet oil pipe; 72. Return oil pipe 8. Connecting piece; 80. Rotating shaft; 81. Driving ring; 82. Third telescopic rod; 90. Driving part one; 901. Double-acting cylinder one; 902. Moving block; 91. Driving part two; 910. Double-acting cylinder two; 92. Driving part three; 920. Second telescopic rod; 921. Horizontal lifting rod Detailed implementation mode

[0019] The present invention will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0020] The embodiment of the present application discloses a hydraulic motor noise test platform with adaptive multi-dimensional adjustment. It should be noted that this hydraulic motor noise test platform is mainly applied in the process of hydraulic motor testing, and in terms of technical effects, it can avoid the problem of only being able to conduct experimental tests on a single motor.

[0021] Embodiment 1: A hydraulic motor noise test platform with adaptive multi-dimensional adjustment.

[0022] Refer to Figure 1 , Figure 3 and Figure 8 As shown, it includes a support platform 1. On one side of the upper surface of the support platform 1, first transfer plates 10 are symmetrically arranged. A second transfer plate 11 is installed between the first transfer plates 10. The hydraulic motor will be transported to the second transfer plate 11 through the first transfer plates 10, and then the noise experiment test will be carried out on the second transfer plate 11; the first transfer plate 10 and the second transfer plate 11 are arranged in a staggered manner to prevent the hydraulic motor on the first transfer plate 10 from colliding or tilting when moving to the second transfer plate 11 due to the arc at the edges of the first transfer plate 10 and the second transfer plate 11, affecting the transportation.

[0023] Above the second transfer plate 11, a sound insulation cover 12 is arranged through a first telescopic rod 3. Through the cooperation of the sound insulation cover 12 and the second transfer plate 11, a sealed test environment is provided for the hydraulic motor. The sound insulation cover 12 includes a sound level meter (not shown in the figure) for conducting noise experiments on the hydraulic motor. The sound level meter is a device existing for hydraulic motor noise testing and will not be elaborated hereinafter.

[0024] A clamping part 2 for clamping the hydraulic motor and corresponding to the sound insulation cover 12 is also installed on the support platform 1. When the hydraulic motor moves to a length corresponding to the test chamber of the sound insulation cover 12, it is clamped by the clamping part 2 to prevent the hydraulic motor from shifting due to vibration during operation.

[0025] Referring to Figure 2 and Figure 3 as shown, it is a schematic structural diagram of clamping the hydraulic motor; specifically, the clamping member 2 includes a bidirectional screw 20, a clamping rod 21, a claw 22 and an elastic material 23. The bidirectional screw 20 is rotatably installed on the support platform 1 along the width direction of the support platform 1. Both ends of the bidirectional screw 20 are installed with clamping rods 21 that can move back and forth along the width direction of the support platform 1 by means of threaded connection. The clamping rods 21 are located in the limiting grooves on the support platform 1. A claw 22 is hingedly arranged on the clamping rod 21 through a torsion spring. An elastic material 23 is installed on the side of the claw 22 close to the second transfer plate 11. A pin is installed at the hinge point between the clamping rod 21 and the claw 22, and the torsion spring is sleeved on the pin as a rotation fulcrum. One end of each of the two ends of the torsion spring is fixed to the clamping rod 21, and the other end is fixed to the claw 22. When the claw 22 is opened by an external force, the torsion spring is further twisted to store elastic potential energy. After the external force disappears, the spring rebounds to make the claw 22 automatically return to the initial state. Due to the limitation of the support platform 1 on 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.

[0026] When the claws 22 on the two clamping rods 21 approach each other under the action of the bidirectional screw 20, they will move synchronously towards the hydraulic motor to clamp the hydraulic motor. The function of the hinged arrangement of the claws 22 is that the upper end of the claw 22 will incline towards the direction of the second transfer plate 11 in the initial state. During the process of the claw 22 following the clamping rod 21 to move, the upper end of the claw 22 will first contact the hydraulic motor. As the claw 22 continues to move, the claw 22 will rotate under the thrust of the clamping rod 21 and the reaction force of the hydraulic motor until the lower end of the claw 22 contacts the hydraulic motor.

[0027] During this process, due to the constant height at the hinge of the claw 22, the upper end of the claw 22 will show a trend of rising in an arc during the rotation process. The two claws 22 on both sides work simultaneously, which can drive the hydraulic motor to rise a certain distance following the rotation of the claw 22. In this way, the hydraulic motor will not come into contact with the second transfer plate 11 during the test, reducing the influence of the second transfer plate 11 on the noise test of the hydraulic motor, increasing the rigor of the experiment, and ensuring the accuracy of the experimental data.

[0028] Referring to Figure 8As shown in the figure, it is a schematic structural diagram of a structure that provides a sealing test environment for a hydraulic motor. Specifically, the sound insulation cover 12 includes sound insulation plates 120. The four sound insulation plates 120 are distributed in a rectangle on the second transfer plate 11. An L-shaped sealing plate 121 is also jointly arranged between two adjacent sound insulation plates 120. The sealing plate 121 is slidably arranged with the sound insulation plate 120. Metal guide rails are arranged on the sliding contact surface between the sealing plate 121 and the sound insulation plate 120 to facilitate sliding. In addition, polyurethane materials are arranged on the inner wall of the sealing plate 121 and the outer wall of the sound insulation plate 120, which have the characteristics of wear resistance, high elasticity and low friction coefficient. While not affecting the sliding between the sealing plate 121 and the sound insulation plate 120, it can also ensure that there are no gaps between the sealing plate 121 and the sound insulation plate 120, ensuring the sealing of the internal space. An elevating plate 122 is arranged above the sound insulation plate 120, and a flexible sound insulation material 123 is jointly installed between the elevating plate 122 and the sound insulation plate 120.

[0029] 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 is adjusted. Further, the width of the sealed space surrounded by the sound insulation plate 120 and the sealing plate 121 can be adjusted. By controlling the relative sliding of the sealing plates 121 on both sides in the length direction of the support platform 1, the length of the sealed space can be adjusted. Then, the length of the sealed space surrounded by the sound insulation plate 120 and the sealing plate 121 can be adjusted. By controlling the up and down movement of the elevating plate 122 in the sound insulation plate 120, the height of the sealed space can be adjusted. Through multi-dimensional adjustment, it can meet the test requirements of hydraulic motors of different sizes.

[0030] Due to the characteristics of the flexible sound insulation material 123, it will tilt when the elevating 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 function of setting the sound insulation cotton is that in a closed environment, the sound waves emitted by the working hydraulic motor will be reflected and produce echoes after contacting the inner walls of the sound insulation plate 120 and the sealing plate 121. In this way, during the noise experiment test, the echoes will affect the accuracy of the test. Setting the sound insulation cotton can reduce the influence of the echoes and further improve the accuracy of the experiment test.

[0031] Refer to Figure 4 and Figure 5As shown, it is a schematic structural diagram of the lifting of the sound insulation cover 12. Specifically, a synchronizing member 4 for enabling the sound insulation cover 12 to work synchronously with the bidirectional screw 20 is provided on the support platform 1. The synchronizing member 4 includes a connecting shaft 40, a synchronizing gear 41, and a synchronizing rack 42. A connecting plate 31 is commonly provided on two adjacent first telescopic rods 3 on the same side. The connecting shaft 40 is rotatably installed on the connecting plate 31, and one end of the connecting shaft 40 away from the sound insulation cover 12 is connected to the bidirectional screw 20 by means of belt drive. When the bidirectional screw 20 rotates, it will drive the connecting shaft 40 to rotate. A synchronizing gear 41 is installed at one end of the connecting shaft 40 close to the sound insulation cover 12. A synchronizing rack 42 meshing with the synchronizing gear 41 is connected to the sound insulation cover 12. The rotation of the connecting shaft 40 drives the synchronizing gear 41 to rotate, and then under the drive of the synchronizing gear 41, the synchronizing rack 42 engaged with it rises and falls, thereby enabling the sound insulation cover 12 to rise and fall on the support platform 1.

[0032] During the specific implementation process, when the bidirectional screw 20 rotates clockwise, it drives the two clamping rods 21 to approach each other. During this process, the synchronizing gear 41 will drive the synchronizing rack 42 to descend, driving the sound insulation cover 12 to descend. Thus, during the process of the claws 22 on the clamping rods 21 clamping the hydraulic motor, the sound insulation cover 12 will slowly descend. When the claws 22 completely clamp the hydraulic motor, the bottom surface of the sound insulation cover 12 can contact the second transfer plate 11, forming a closed test space on the second transfer plate 11.

[0033] On the contrary, after the test is completed, the bidirectional screw 20 rotates counterclockwise, the clamping rods 21 move away from each other, and the sound insulation cover 12 rises. After the test is completed, the hydraulic motor continues to move forward for conveying and collecting by using the second transfer plate 11.

[0034] Among them, 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 board 120, which can adapt to the up and down movement of the first telescopic rod 3 on the support platform 1 without affecting the cooperation between the synchronizing gear 41 and the synchronizing rack 42.

[0035] Refer to Figure 2 and Figure 3 As shown, it is a schematic structural diagram of driving the first transfer plate 10 and the second transfer plate 11 to work synchronously. Specifically, a linkage member 5 for driving the driving shaft of the first transfer plate 10 and the driven shaft of the second transfer plate 11 to work synchronously is provided on the support platform 1. The linkage member 5 includes a first synchronizing wheel 50, a second synchronizing wheel 51, and a synchronizing belt 52. The first synchronizing wheel 50 is rotatably provided on the support platform 1 and is connected to the driving shaft of the first transfer plate 10. The second synchronizing wheel 51 is rotatably provided on the support platform 1 and is connected to the driven shaft of the second transfer plate 11. A synchronizing belt 52 is commonly sleeved on the first synchronizing wheel 50 and the second synchronizing wheel 51.

[0036] Through the operation of the first synchronous wheel 50 , the second synchronous wheel 51 and the synchronous belt 52 , the driving shaft of the first transmission plate 10 and the driven shaft of the second transmission plate 11 are driven to operate synchronously, thereby achieving the purpose of conveying the hydraulic motor.

[0037] The diameter of the first synchronous wheel 50 is larger than the diameter of the second synchronous wheel 51. In this way, when the first synchronous wheel 50 rotates one circle, the second synchronous wheel 51 will rotate more circles, so that the speed of the second transmission plate 11 is faster than that of the first transmission plate 10, so that when the hydraulic motor on the first transmission plate 10 moves to the second transmission plate 11, the distance between the hydraulic motor and the next hydraulic motor is the length of the test chamber of the sound insulation cover 12, so that the hydraulic motor to be tested is accurately matched with the claw 22, and the clamping test is performed on the second transmission plate 11.

[0038] Reference Figure 6 and Figure 7 As shown, it is a schematic diagram of the structure that drives the second transmission plate 11 to cooperate with the bidirectional screw 20; specifically, a matching piece 6 for driving the first synchronous wheel 50 to work in conjunction with the bidirectional screw 20 is also installed on the support platform 1, and the matching piece 6 includes a matching shaft 60, a drive motor 61, a matching ring 62, a matching groove 63, a ratchet groove 64 and a ratchet 65. The matching shaft 60 is rotatably arranged on the support platform 1 and is coaxially arranged with the first synchronous wheel 50. The end of the matching shaft 60 away from the first synchronous wheel 50 is connected to the bidirectional screw 20 through a belt drive. A drive motor 61 is installed on the support platform 1, and the output end of the drive motor 61 is connected to the matching shaft 60.

[0039] It should be noted that when the first synchronous wheel 50 rotates clockwise, the clamping rods 21 on the bidirectional screw 20 will approach each other, and when the driving motor 61 drives the matching shaft 60 to rotate counterclockwise, the supporting parts 2 will move away from each other. That is, in the process of the second transmission plate 11 and the first transmission plate 10 synchronously rotating to transport the hydraulic motor, the clamping rod 21 will approach the hydraulic motor, and the hydraulic motor will be clamped by the claws 22 on the clamping rod 21.

[0040] A matching groove 63 is defined in the first synchronous wheel 50 . A ratchet groove 64 connected to the matching groove 63 is also defined on the first synchronous wheel 50 . A matching ring 62 is disposed in the matching groove 63 and sleeved on the matching shaft 60 . A ratchet 65 is installed on the matching ring 62 via a torsion spring.

[0041] Through the cooperation of the ratchet groove 64 on the first synchronous wheel 50 and the ratchet teeth 65 on the matching ring 62, it can be achieved that when the matching shaft 60 rotates clockwise, the matching shaft 60 can drive the first synchronous wheel 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 are driven by the matching shaft 60 to approach each other and test the clamping of the hydraulic motor. However, when the matching shaft 60 rotates counterclockwise, the matching shaft 60 will not drive the first synchronous wheel 50 to rotate. At this time, the first transmission plate 10 will not work. At this time, the clamping rods 21 are driven by the matching shaft 60 to move away from each other and release the clamping of the hydraulic motor.

[0042] Then the matching shaft 60 rotates clockwise again, the first transmission plate 10 and the second transmission plate 11 resume working, the hydraulic motors that have been tested are transported out for collection, and then the untested motors are transported to the second transmission 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 efficiency of testing.

[0043] Reference Figure 8 as well as Figure 9 As shown, it is a schematic diagram of the structure of the hydraulic motor providing power; specifically, an oil circuit module 7 is installed on the lifting plate 122, and the oil circuit module 7 includes a fixed bracket 70, which is arranged on one side of the lifting plate 122 close to the sound insulation board 120, and 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.

[0044] In order to provide power for the hydraulic motor, an oil inlet pipe 71 and an oil return pipe 72 are respectively connected to the connection ports on the hydraulic motor to transport hydraulic oil and form a circuit to provide driving force for the hydraulic motor. When the sound insulation 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 ports on the hydraulic motor.

[0045] Reference Figure 1 and Figure 8 As shown, it is a schematic diagram of the structure for adjusting the test space for hydraulic motors of different sizes; specifically, a driving member 90 for driving the sound insulation board 120 in the width direction thereof is provided on the support platform 1, and the driving member 90 comprises a bidirectional cylinder 901, and the two output ends of the bidirectional cylinder 901 are respectively connected with moving blocks 902, and the moving blocks 902 are fixedly mounted on the fixed rods of the two first telescopic rods 3 on the same side, and the moving blocks 902 are located below the second transmission plate 11. The bidirectional cylinder 901 is used to move the moving blocks 902 relatively, and then the first telescopic rods 3 on the two moving blocks 902 are moved relatively, and then the distance between the sound insulation boards 120 on the first telescopic rods 3 on both sides can be adjusted to adjust the width of the sealed space.

[0046] A second driving member 91 for driving the movement of the sealing plate 121 in the length direction thereof is further provided on the support platform 1. The second driving member 91 includes a double-acting cylinder 910. The double-acting cylinder 910 is arranged on the sound insulation plate 120, and the output ends of the double-acting cylinder 910 are respectively connected to the two adjacent sealing plates 121. The distance between the sealing plates 121 at both ends in the length direction of the support platform 1 is adjusted by the double-acting cylinder 910 to adjust the length of the sealed space.

[0047] A third driving member 92 for driving the lifting plate 122 to lift is further installed on the support platform 1. The third driving member 92 includes two second telescopic rods 920. The two second telescopic rods 920 are arranged on the two sound insulation plates 120 arranged along the length direction of the support platform 1. The top output ends of the two second telescopic rods 920 are jointly installed with a horizontal lifting rod 921 connected to the lifting plate 122.

[0048] The horizontal lifting plate 122 is controlled to lift by the lifting rod 921 to adjust the height of the sealed space.

[0049] Embodiment 2: On the basis of Embodiment 1, in order to further improve the applicability of the present invention, a connecting member 8 is further proposed, which is beneficial to adjusting the positions of the oil inlet pipe 71 and the oil return pipe 72, and further adapting to the positions of the oil inlet and outlet of hydraulic motors of different models, so that experimental tests can be carried out on hydraulic motors of different models.

[0050] Refer to Figure 8 and Figure 9 As shown, it is a schematic structural diagram of adjusting the positions of the oil inlet pipe 71 and the oil return pipe 72. Specifically, the connecting member 8 includes a rotating shaft 80. The rotating shaft 80 is rotatably installed in the chamber of the fixed bracket 70. A driving ring 81 is installed on the rotating shaft 80. Third telescopic rods 82 are symmetrically installed on the driving ring 81 along the width direction of the fixed bracket 70. The telescopic section of one 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.

[0051] The third telescopic rod 82 can adjust the distance between the oil inlet pipe 71 and the oil return pipe 72 through telescoping, and then the rotating shaft 80 is rotated by external driving to adjust the rotation angles of the oil inlet pipe 71 and the oil return pipe 72. Thus, power can be provided for hydraulic motors of different models, and noise experimental tests can be carried out on hydraulic motors of different models.

[0052] During operation: In the first step, the hydraulic motor will be conveyed to the second transfer plate 11 through the first transfer plate 10. Since the movement speed of the first transfer plate 10 is slower than that of the second transfer plate 11, the hydraulic motors on the first transfer plate 10 will gradually be spaced apart on the second transfer plate 11.

[0053] Step 2: During the conveyance of the second transfer plate 11, when the sound insulation cover 12 descends, the oil inlet and the oil outlet on the fixed bracket 70 are correspondingly connected to the connection ports of the hydraulic motor.

[0054] Step 3: During this process, when the mating shaft 60 rotates clockwise, the mating shaft 60 can drive the first synchronous wheel 50 to rotate. At this time, the clamping rods 21 approach each other under the drive of the mating shaft 60. After clamping the hydraulic motor, a test is carried out.

[0055] Step 4: After the test is completed, when the mating shaft 60 rotates counterclockwise, at this time the mating shaft 60 will not drive the first synchronous wheel 50 to rotate, and both the first transfer plate 10 and the second transfer plate 11 stop working. At this time, the clamping rods 21 move away from each other under the drive of the mating shaft 60, releasing the clamping of the hydraulic motor.

[0056] Step 5: Then the mating shaft 60 rotates clockwise again, and the first transfer plate 10 and the second transfer plate 11 resume working. The tested hydraulic motor is conveyed out for collection, and then the untested hydraulic motor is conveyed onto the second transfer plate 11 again. During this process, the clamping rods 21 will approach the hydraulic motor again to clamp it, and so on, for detection.

[0057] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0058] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard 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. An adaptive multi-dimensional adjustable hydraulic motor noise test platform, comprising a support platform (1), characterized in that: On one side of the upper surface of the support platform (1), first conveyor plates (10) are symmetrically arranged. A second conveyor plate (11) is installed between the first conveyor plates (10), and the first conveyor plates (10) and the second conveyor plate (11) are arranged in a staggered manner. Above the second conveyor plate (11), a sound insulation cover (12) for providing a sealed test environment for the hydraulic motor is arranged through a first telescopic rod (3); on both sides of the support platform (1) and inside the sound insulation cover (12), clamping members (2) for clamping the hydraulic motor to be tested are symmetrically arranged. When the first conveyor plate (10) and the second conveyor plate (11) rotate simultaneously to convey the hydraulic motor to be tested, the clamping members (2) approach each other until they clamp the hydraulic motor to be tested. At the same time, the sound insulation cover (12) gradually descends until the sound insulation cover (12) is completely sealed with the second conveyor plate (11) to completely cover the hydraulic motor to be tested; when the hydraulic motor test is completed, the clamping members (2) move away from each other to release the hydraulic motor, and at the same time, the sound insulation cover (12) gradually rises until the top of the tested hydraulic motor exposes outside the sound insulation cover (12).

2. The hydraulic motor noise test platform with adaptive multi-dimensional adjustment according to claim 1, characterized in that: The sound insulation cover (12) includes four sound insulation plates (120). The four sound insulation plates (120) are distributed in a rectangle on the second conveyor plate (11). An L-shaped sealing plate (121) is also jointly arranged between adjacent two sound insulation plates (120). The sealing plate (121) is slidably arranged with the sound insulation plate (120). An elevating plate (122) is arranged above the sound insulation plate (120), and a flexible sound insulation material (123) is jointly installed between the elevating plate (122) and the sound insulation plate (120).

3. An adaptive multi-dimensional adjustable hydraulic motor noise test platform according to claim 1, characterized in that: The clamping member (2) includes a bidirectional screw (20). The bidirectional screw (20) is rotatably installed on the support platform (1) along the width direction of the support platform (1). Clamping rods (21) that can move along the width direction of the support platform (1) are installed at both ends of the bidirectional screw (20) by means of threaded connection. A claw (22) is hinged on the clamping rod (21) through a torsion spring, and an elastic material (23) is installed on one side of the claw (22) close to the second conveyor plate (11).

4. An adaptive multi-dimensional adjustable hydraulic motor noise test platform according to claim 3, characterized in that: A synchronizing member (4) for enabling the sound insulation cover (12) and the bidirectional screw (20) to work synchronously is arranged on the support platform (1). The synchronizing member (4) includes a connecting shaft (40). A connecting plate (31) is jointly arranged on two adjacent first telescopic rods (3) on the same side. The connecting shaft (40) is rotatably installed on the connecting plate (31), and the end of the connecting shaft (40) far from the sound insulation cover (12) is connected to the bidirectional screw (20) by means of belt transmission. A synchronizing gear (41) is installed at the end of the connecting shaft (40) close to the sound insulation cover (12), and a synchronizing rack (42) meshing with the synchronizing gear (41) is connected to the sound insulation cover (12).

5. An adaptive multi-dimensional adjustable hydraulic motor noise test platform according to claim 1, characterized in that: The support platform (1) is provided with a linkage member (5) for driving the first transmission plate (10) and the second transmission plate (11) to work synchronously. The linkage member (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 to the driving shaft of the first transmission plate (10). The second synchronous wheel (51) is rotatably arranged on the support platform (1) and connected to the driven wheel of the second transmission plate (11). The first synchronous wheel (50) and the second synchronous wheel (51) are both sleeved with a synchronous belt (52). The diameter of the first synchronous wheel (50) is larger than the diameter of the second synchronous wheel (51).

6. An adaptive multi-dimensional adjustable hydraulic motor noise test platform according to claim 5, characterized in that: The support platform (1) is also provided with a matching piece (6) for driving the first synchronous wheel (50) and the bidirectional screw (20) to work in linkage. The matching piece (6) comprises a matching shaft (60). The matching shaft (60) is rotatably arranged on the support platform (1) and is coaxially arranged with the first synchronous wheel (50). One end of the matching shaft (60) away from the first synchronous wheel (50) is connected to the bidirectional screw (20) via a belt transmission. A driving motor (61) is installed on the support platform (1), and an output end of the driving motor (61) is connected to the matching shaft (60).

7. An adaptive multi-dimensional adjustable hydraulic motor noise test platform according to claim 6, characterized in that: The mating member (6) further comprises a mating ring (62), a mating groove (63) is provided in the first synchronous wheel (50), a ratchet groove (64) communicating with the mating groove (63) is also provided on the first synchronous wheel (50), the mating ring (62) is arranged in the mating groove (63) and sleeved on the mating shaft (60), and a ratchet (65) is mounted on the mating ring (62) via a torsion spring.

8. An adaptive multi-dimensional adjustable hydraulic motor noise test platform according to claim 2, characterized in that: An oil circuit module (7) is mounted on the lifting plate (122), the oil circuit module (7) comprising a fixed bracket (70), the fixed bracket (70) being arranged on a side of the lifting plate (122) close to the sound insulation plate (120), and an oil inlet pipe (71) and an oil return pipe (72) connected to an external oil supply device being mounted on the fixed bracket (70).

9. An adaptive multi-dimensional adjustable hydraulic motor noise test platform according to claim 2, characterized in that: The support platform (1) is provided with a first driving member (90) for driving the sound insulation plate (120) to move in its width direction, the support platform (1) is also provided with a second driving member (91) for driving the sealing plate (121) to move in its length direction, and the support platform (1) is also provided with a third driving member (92) for driving the lifting plate (122) to move up and down.

10. An adaptive multi-dimensional adjustable hydraulic motor noise test platform according to claim 9, characterized in that: The first driving member (90) includes a first double-acting cylinder (901). Two output ends of the first double-acting cylinder (901) are respectively connected with a moving block (902). The moving block (902) is fixedly installed on the fixed rods of the two first telescopic rods (3) on the same side. The moving block (902) is located below the second conveyor plate (11). The second driving member (91) includes a second double-acting cylinder (910). The second double-acting cylinder (910) is arranged on the sound insulation board (120), and the output ends of the second double-acting cylinder (910) are respectively connected with two adjacent sealing plates (121). The third driving member (92) includes two second telescopic rods (920). The two second telescopic rods (920) are correspondingly arranged on the two sound insulation boards (120) arranged along the length direction of the support platform (1). 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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