Noise testing device for sub-assembly of speed reducing mechanism

Abstract

The utility model discloses a reducing mechanism sub-assembly noise testing device, which comprises a rack, a driving assembly, a clamping assembly and a testing assembly, the driving assembly is provided with a fixed end and a rotating end, the fixed end of the driving assembly is connected to the rack, the clamping assembly is used for being detachably connected to a reducing mechanism sub-assembly, and the testing assembly is used for testing noise of the reducing mechanism sub-assembly. The clamping assembly is arranged relative to the rotating end of the driving assembly and is in sliding connection with the rack, the clamping assembly has a first state close to the rotating end of the driving assembly and a second state far away from the rotating end of the driving assembly, and the testing assembly is arranged relative to the clamping assembly and is connected to the rack. According to the utility model, the problem in the prior art that the speed reducing mechanisms with different sizes and specifications cannot be used by the testing device due to the fact that the distance between the fixing seat for installing the speed reducing mechanism and the universal coupling is fixed can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a noise testing device for a speed reduction mechanism sub-assembly. Background Art

[0002] In order to complete the relevant noise test on the reduction mechanism, relevant detection devices came into being.

[0003] For example, the Chinese utility model patent with application number: CN202121811682.6, named: A noise detection device for a reducer assembly, including a control cabinet, a base, a motor, a flip mechanism, and a telescopic cylinder. The control cabinet is arranged on one side of the base, and the motor and the telescopic cylinder are respectively fixed at both ends of the base. The flip mechanism is arranged between the motor and the telescopic cylinder. The flip mechanism includes a support seat and a fixed seat. The support seat is fixed on both sides of the base. The fixed seat is rotatably arranged on the support seat. One end of the telescopic cylinder is hinged to the base, and the other end is hinged to the reverse side of the fixed seat. The fixed seat fixes the reducer. When the front side of the fixed seat is rotated to be opposite to the rotating shaft of the motor, the rotating shaft of the motor is fixedly connected to the reducer on the fixed seat. The fixed seat usually used for installing the reduction mechanism has a fixed spacing from the universal coupling, which limits the size of the reduction mechanism to which it is applicable.

[0004] Therefore, there is an urgent need for a speed reduction mechanism sub-assembly noise testing device to solve the problem in the prior art that the distance between the fixing seat for installing the speed reduction mechanism and the universal coupling is fixed, so that the testing device cannot use speed reduction mechanisms of different sizes. Utility Model Content

[0005] In view of this, it is necessary to provide a noise testing device for a reduction mechanism subassembly to solve the technical problem in the prior art that the distance between the fixing seat for installing the reduction mechanism and the universal coupling is fixed, resulting in the inability to use reduction mechanisms of different sizes and specifications in the testing device.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model provides a noise testing device for a speed reduction mechanism sub-assembly, comprising:

[0007] frame;

[0008] A driving assembly having a fixed end and a rotating end, wherein the fixed end of the driving assembly is connected to the frame;

[0009] a clamping assembly, the clamping assembly being used for being detachably connected to the speed reduction mechanism sub-assembly, the clamping assembly being arranged relative to the rotating end of the driving assembly and being slidably connected to the frame, the clamping assembly having a first state close to the rotating end of the driving assembly and a second state away from the rotating end of the driving assembly, and

[0010] A testing component is arranged relative to the clamping component and connected to the frame.

[0011] Furthermore, the clamping assembly includes a sliding member and a clamping member, the sliding member is arranged relative to the rotating end of the driving assembly and can slide close to or away from the rotating end of the driving assembly, the clamping member is connected to the sliding member and is detachably connected to the speed reduction mechanism sub-assembly.

[0012] Furthermore, the sliding member includes two guide rails, two sliding blocks and a connecting plate. The guide rails are arranged along the axial direction of the rotating end of the driving assembly, and the two guide rails are parallel to each other and arranged at intervals, and are both connected to the frame. The sliding blocks are arranged one by one corresponding to the guide rails and are slidably mounted on the guide rails. The connecting plate is connected to the two sliding blocks and the clamping member.

[0013] Furthermore, the reduction mechanism sub-assembly has an inner ring end and an outer ring end, the inner ring end of the reduction mechanism sub-assembly can rotate relative to the outer ring end, the clamping member includes a clamping frame, at least one clamping portion and at least one limiting portion, the clamping frame is provided with a clamping hole for accommodating the reduction mechanism sub-assembly, and the clamping hole passes through the clamping frame, the clamping portion is connected to the clamping frame and abuts against the outer ring end of the reduction mechanism sub-assembly, for limiting the rotation of the outer ring end of the reduction mechanism sub-assembly relative to the clamping frame, the limiting portion is connected to the clamping frame along the radial sliding direction of the clamping hole, and can abut against the reduction mechanism sub-assembly, for limiting the sliding of the reduction mechanism sub-assembly relative to the clamping frame along the axis of the clamping hole.

[0014] Furthermore, the outer ring end of the reduction mechanism sub-assembly is evenly provided with a plurality of grooves along its circumference, and the number of the clamping parts in the clamping member is multiple, and the clamping parts are arranged one-to-one corresponding to the grooves and are evenly arranged along the circumferential direction of the clamping hole, and one end of the clamping part is clamped in the groove, and the other end is connected to the circumferential inner wall of the clamping hole.

[0015] Furthermore, the clamping frame is provided with at least one threaded hole along the radial direction of the clamping hole, and the limiting portion includes a screw and a ball head, one end of the screw is threadedly connected to the threaded hole, and the ball head is connected to the other end of the screw and is externally placed on the clamping hole.

[0016] Furthermore, the number of the limiting parts in the clamping member is two, and the two limiting parts are point-symmetrically distributed along the axis of the clamping hole.

[0017] Furthermore, the drive assembly includes two support seats, a sensor, two couplings, a transmission shaft, a motor and a cover body, the two support seats are arranged at an interval with each other, the sensor is arranged between the two support seats, the sensor has a fixed end and two rotating ends, the fixed end of the sensor is connected to the frame, the two couplings are respectively arranged on the two support seats, and are connected to the rotating ends of the sensors, one coupling is detachably connected to the inner ring end of the reduction mechanism subassembly via the transmission shaft, the fixed end of the motor is connected to the support seat, the output shaft is connected to the other coupling, and the cover body covers the motor, the two support seats, the sensor and the two couplings.

[0018] Furthermore, the test assembly includes a fixing frame and a noise meter. The fixing frame is arranged on one side of the guide rail and connected to the frame. The noise meter is arranged relative to the speed reduction mechanism subassembly and connected to the fixing frame.

[0019] Furthermore, it also includes a display component, which is connected to the frame and electrically connected to the motor, sensor and noise meter.

[0020] Compared with the prior art, the beneficial effects of the utility model include: a driving assembly is arranged on the frame, the fixed end of the driving assembly is connected to the frame, and the rotating end is used to connect the reduction mechanism subassembly, the clamping assembly is arranged relative to the rotating end of the driving assembly, and is slidably connected to the frame, and the clamping assembly is detachably connected to the reduction mechanism subassembly, and is used to clamp the reduction mechanism subassembly, and the clamped mechanism subassembly can slide close to the rotating end of the driving assembly together with the clamping assembly, so that the reduction mechanism subassembly can be connected to the rotating end of the driving assembly, and the test assembly is arranged relative to the clamping assembly, and is used to measure the noise level of the reduction mechanism subassembly when it is working. Compared with the prior art, the clamping assembly can clamp the reduction mechanism sub-assembly, and after clamping, drive the reduction mechanism sub-assembly to slide close to the rotating end of the driving assembly, so that the spacing between the clamping assembly and the rotating end of the driving assembly is adjustable, which can be suitable for noise measurement of reduction mechanism sub-assemblies of different sizes and specifications, and can solve the technical problem in the prior art that the spacing between the fixed seat for installing the reduction mechanism and the universal coupling is fixed, resulting in the test device being unable to use reduction mechanisms of different sizes and specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a speed reduction mechanism sub-assembly noise testing device provided by an embodiment of the utility model;

[0022] Figure 2 It is a front view structural schematic diagram of a speed reduction mechanism sub-assembly noise testing device provided by an embodiment of the utility model;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the frame, support seat, coupling and clamping assembly provided by the embodiment of the utility model connected with the speed reduction mechanism sub-assembly;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the connection between the clamping frame, the clamping part and the limiting part provided by the embodiment of the utility model and the speed reduction mechanism sub-assembly.

[0025] Description of reference numerals:

[0026] Rack 1;

[0027] Drive component 2;

[0028] Two support seats 21;

[0029] Sensor 22;

[0030] Coupling 23;

[0031] Transmission shaft 24;

[0032] Motor 25;

[0033] Cover body 26;

[0034] Clamping assembly 3;

[0035] Sliding member 31;

[0036] Guide rail 311;

[0037] Sliding block 312;

[0038] Connecting plate 313;

[0039] Clamping member 32;

[0040] Clamping frame 321;

[0041] A clamping portion 322;

[0042] Limiting portion 323;

[0043] Test component 4;

[0044] Fixed frame 41;

[0045] Noise meter 42;

[0046] Speed ​​reduction mechanism sub-assembly 5;

[0047] Display component 6. DETAILED DESCRIPTION

[0048] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0049] See also Figure 1 , Figure 2 The utility model provides a noise testing device for a reduction mechanism subassembly 5, comprising: a frame 1, a driving component 2, a clamping component 3 and a testing component 4, wherein the driving component 2 has a fixed end and a rotating end, the fixed end of the driving component 2 is connected to the frame 1, the clamping component 3 is used for being detachably connected to the reduction mechanism subassembly 5, the clamping component 3 is arranged relative to the rotating end of the driving component 2, and is slidably connected to the frame 1, the clamping component 3 has a first state close to the rotating end of the driving component 2 and a second state away from the rotating end of the driving component 2, the testing component 4 is arranged relative to the clamping component 3, and is connected to the frame 1.

[0050] In this device, a driving component 2 is arranged on the frame 1, the fixed end of the driving component 2 is connected to the frame 1, and the rotating end is used to connect to the reduction mechanism sub-assembly 5, the clamping component 3 is arranged relative to the rotating end of the driving component 2, and is slidably connected to the frame 1, and the clamping component 3 is detachably connected to the reduction mechanism sub-assembly 5, and is used to clamp the reduction mechanism sub-assembly 5, and the clamped mechanism sub-assembly can slide close to the rotating end of the driving component 2 together with the clamping component 3, so that the reduction mechanism sub-assembly 5 can be connected to the rotating end of the driving component 2, and the testing component 4 is arranged relative to the clamping component 3, and is used to measure the noise level of the reduction mechanism sub-assembly 5 when it is working.

[0051] Compared with the prior art, the clamping component 3 can clamp the reduction mechanism sub-assembly 5, and after clamping, drive the reduction mechanism sub-assembly 5 to slide close to the rotating end of the driving component 2, so that the spacing between the clamping component 3 and the rotating end of the driving component 2 is adjustable, which can be suitable for the noise measurement of reduction mechanism sub-assemblies 5 of different sizes and specifications, and can solve the technical problem in the prior art that the spacing between the fixed seat for installing the reduction mechanism and the universal coupling 23 is fixed, thereby causing the test device to be unable to use reduction mechanisms of different sizes and specifications.

[0052] Furthermore, the frame 1 is a common and easy-to-purchase inspection device tooling detection platform on the market. The platform is composed of thickened precision mold steel plates and European standard aluminum profiles, which can improve the seismic resistance and aesthetics of the detection device, and will not be elaborated here.

[0053] like Figures 1 to 3 As shown, the driving assembly 2 includes two support seats 21, a sensor 22, two couplings 23, a transmission shaft 24, a motor 25 and a cover 26.

[0054] like Figure 2, Figure 3 As shown, the clamping assembly 3 includes a sliding member 31 and a clamping member 32 .

[0055] The sliding member 31 is disposed relative to the rotating end of the driving assembly 2 and can slide close to or away from the rotating end of the driving assembly 2 . The clamping member 32 is connected to the sliding member 31 and is detachably connected to the speed reduction mechanism sub-assembly 5 .

[0056] The sliding member 31 enables the clamping member 32 clamping the speed reduction mechanism sub-assembly 5 to slide relative to the frame 1 .

[0057] As an implementation method, Figure 3 As shown, the sliding member 31 includes two guide rails 311, two sliding blocks 312 and a connecting plate 313. The guide rails 311 are arranged along the axial direction of the rotating end of the driving assembly 2, and the two guide rails 311 are parallel to each other and arranged at intervals, and are both connected to the frame 1. The sliding blocks 312 are arranged one by one corresponding to the guide rails 311 and are slidably mounted on the guide rails 311. The connecting plate 313 is connected to the two sliding blocks 312 and the clamping member 32.

[0058] The cooperation between the sliding block 312 and the guide rail 311 plays a connecting and guiding role in the sliding of the clamping member 32 relative to the frame 1.

[0059] Furthermore, a sliding groove is formed on the sliding block 312 relative to the guide rail 311 , and the sliding block 312 is slidably embedded in the guide rail 311 through the sliding groove and can slide relative to the guide rail 311 .

[0060] Furthermore, threaded holes are arranged at intervals on the guide rail 311, and screws are arranged on the sliding block 312 to match the threaded holes. After determining the distance between the clamping frame 321 and the cover body 26, the screws are threadedly connected to the threaded holes during use, so that the installation position of the clamping frame 321 can be locked, which is used to improve the safety and stability of the device during testing. No further details will be given here.

[0061] Specifically, in the device, two limit blocks are respectively disposed at both ends of the two guide rails 311 , and the two limit blocks are disposed between the two guide rails 311 to limit the sliding block 312 from separating from the guide rails 311 .

[0062] As another implementation method, Figure 3 , Figure 4As shown, the reduction mechanism sub-assembly 5 has an inner ring end and an outer ring end, and the inner ring end of the reduction mechanism sub-assembly 5 can rotate relative to the outer ring end. The clamping member 32 includes a clamping frame 321, at least one clamping portion 322 and at least one limiting portion 323. The clamping frame 321 is provided with a clamping hole for accommodating the reduction mechanism sub-assembly 5, and the clamping hole passes through the clamping frame 321. The clamping portion 322 is connected to the clamping frame 321 and abuts against the outer ring end of the reduction mechanism sub-assembly 5 to limit the outer ring end of the reduction mechanism sub-assembly 5 from rotating relative to the clamping frame 321. The limiting portion 323 is connected to the clamping frame 321 along the radial sliding direction of the clamping hole, and can abut against the reduction mechanism sub-assembly 5 to limit the reduction mechanism sub-assembly 5 from sliding relative to the clamping frame 321 along the axis of the clamping hole.

[0063] The rotating end of the driving component 2 is connected to the inner ring end of the reduction mechanism sub-assembly 5, and drives its inner ring end to rotate relative to the outer ring end. The clamping structure composed of the clamping frame 321, at least one clamping portion 322 and at least one limiting portion 323 is used to fix the outer ring end of the reduction mechanism sub-assembly 5, so that the reduction mechanism sub-assembly 5 can be installed on the test device and can rotate with the rotating end of the driving component 2.

[0064] As a preferred implementation method, Figure 4 As shown, the outer ring end of the speed reduction mechanism sub-assembly 5 is evenly provided with a plurality of grooves along its circumference, and the number of the clamping parts 322 in the clamping member 32 is multiple, and the clamping parts 322 are arranged in a one-to-one correspondence with the grooves and are evenly arranged along the circumferential direction of the clamping hole, and one end of the clamping part 322 is clamped in the groove, and the other end is connected to the circumferential inner wall of the clamping hole.

[0065] The engagement between the groove and the engaging portion 322 can limit the outer ring end of the speed reduction mechanism sub-assembly 5 from rotating relative to the clamping frame 321 , so that the outer ring end of the speed reduction mechanism sub-assembly 5 is mounted on the clamping frame 321 .

[0066] Specifically, the clamping portion 322 is a convex block whose cross-sectional area is smaller than that of the groove. The convex block can cooperate with the groove after sliding, which will not be described in detail here.

[0067] As another preferred implementation, Figure 4 As shown, the clamping frame 321 has at least one threaded hole opened along the radial direction of the clamping hole, and the limiting portion 323 includes a screw and a ball head, one end of the screw is threadedly connected to the threaded hole, and the ball head is connected to the other end of the screw and is placed outside the clamping hole.

[0068] By means of threaded connection, the screw rod can slide along the radial direction of the clamping hole. After sliding, the screw rod reduces the diameter of the clamping hole, thereby preventing the speed reduction mechanism subassembly 5 from sliding along the axis of the clamping hole.

[0069] Furthermore, the screw rod and ball head here are common and easy-to-purchase equipment on the market, and can also be replaced by bolts here. This is a conventional setting known to those skilled in the art and will not be described in detail.

[0070] As an implementation method, Figure 4 As shown, there are two limiting portions 323 in the clamping member 32, and the two limiting portions 323 are point-symmetrically distributed along the axis of the clamping hole.

[0071] Limiting portions 323 are provided on both sides of the speed reduction mechanism sub-assembly 5, which can stably limit the speed reduction mechanism sub-assembly 5 and improve the stability of the device.

[0072] As another implementation method, Figure 3 As shown, two support seats 21 are arranged at an interval with each other, and a sensor 22 is arranged between the two support seats 21. The sensor 22 has a fixed end and two rotating ends. The fixed end of the sensor 22 is connected to the frame 1. Two couplings 23 are respectively arranged on the two support seats 21 and connected to the rotating ends of the sensor 22. One coupling 23 is detachably connected to the inner ring end of the reduction mechanism sub-assembly 5 via a transmission shaft 24. The fixed end of the motor 25 is connected to the support seat 21, and the output shaft is connected to the other coupling 23. The cover body 26 covers the motor 25, the two support seats 21, the sensor 22 and the two couplings 23.

[0073] Two support seats 21, sensors 22, two couplings 23, transmission shaft 24, and motor 25 form a driving structure, so that the reducer can rotate relative to the clamping frame 321. At the same time, the cover body 26 is used to protect the motor 25, sensor 22 and two couplings 23 to improve the stability and safety of the device.

[0074] like Figure 3 As shown, the test assembly 4 includes a fixing frame 41 and a noise meter 42 . The fixing frame 41 is arranged on one side of the guide rail 311 and connected to the frame 1 . The noise meter 42 is arranged relative to the speed reduction mechanism subassembly 5 and connected to the fixing frame 41 .

[0075] The noise meter 42 is disposed on one side of the guide rail 311 via the fixing bracket 41 and is disposed opposite to the speed reduction mechanism sub-assembly 5 for measuring the noise of the speed reduction mechanism sub-assembly 5 when it is in operation.

[0076] Furthermore, the noise meter 42 here is a common and easily purchased device on the market. This is a conventional setting known to those skilled in the art and will not be described in detail.

[0077] like Figure 1 , Figure 2 As shown, the device further includes a display assembly 6 , which is connected to the frame 1 and is electrically connected to the motor 25 , the sensor 22 and the noise meter 42 .

[0078] The display component 6 is used to display various parameter indicators related to the test process, and the feedback is effectively and directly given to the operator, which is convenient to use.

[0079] Furthermore, the display component 6 is a data monitoring display that is common and easy to purchase on the market. This is a conventional setting for those skilled in the art and will not be described in detail.

[0080] The specific working process of the utility model is as follows: a driving component 2 is arranged on the frame 1, the fixed end of the driving component 2 is connected to the frame 1, and the rotating end is used to connect the speed reduction mechanism sub-assembly 5, the clamping component 3 is arranged relative to the rotating end of the driving component 2, and is slidably connected to the frame 1, and the clamping component 3 is detachably connected to the speed reduction mechanism sub-assembly 5, and is used to clamp the speed reduction mechanism sub-assembly 5, and the clamped mechanism sub-assembly can slide close to the rotating end of the driving component 2 together with the clamping component 3, so that the speed reduction mechanism sub-assembly 5 can be connected to the rotating end of the driving component 2, and the test component 4 is arranged relative to the clamping component 3, and is used to measure the noise level of the speed reduction mechanism sub-assembly 5 when working. Compared with the prior art, the clamping component 3 can clamp the speed reduction mechanism sub-assembly 5, and after clamping, it drives the speed reduction mechanism sub-assembly 5 to slide close to the rotating end of the driving component 2, so that the spacing between the clamping component 3 and the rotating end of the driving component 2 is adjustable, and can be suitable for noise measurement of speed reduction mechanism sub-assemblies 5 of different sizes.

[0081] When in use, the user first connects the reduction mechanism subassembly 5 to be tested with the transmission shaft 24, and makes the reduction mechanism subassembly 5 coaxially arranged with the transmission shaft 24, then slides the clamping frame 321 and the connecting plate 313 along the guide rail 311, so that the reduction mechanism subassembly 5 is inserted into the clamping hole, and makes the clamping part 322 clamped in the groove, and then adjusts the tightness of the screw rod so that the screw rod limits the reduction mechanism subassembly 5 from sliding relative to the support frame along the axis of the clamping hole, and finally drives the motor 25 to work, drives the reduction mechanism subassembly 5 to rotate, and uses the noise meter 42 to detect the noise.

[0082] The device, through the above structure, can solve the technical problem in the prior art that the test device cannot use speed reduction mechanisms of different sizes because the spacing between the fixing seat for installing the speed reduction mechanism and the universal coupling 23 is fixed.

[0083] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A noise testing device for a speed reduction mechanism subassembly, characterized in that: include: frame; A driving assembly having a fixed end and a rotating end, wherein the fixed end of the driving assembly is connected to the frame; a clamping assembly, the clamping assembly being used for being detachably connected to the speed reduction mechanism sub-assembly, the clamping assembly being arranged relative to the rotating end of the driving assembly and being slidably connected to the frame, the clamping assembly having a first state close to the rotating end of the driving assembly and a second state away from the rotating end of the driving assembly, and A testing component is arranged relative to the clamping component and connected to the frame.

2. The speed reduction mechanism sub-assembly noise testing device according to claim 1, characterized in that: The clamping assembly includes a sliding member and a clamping member. The sliding member is arranged relative to the rotating end of the driving assembly and can slide close to or away from the rotating end of the driving assembly. The clamping member is connected to the sliding member and is detachably connected to the speed reduction mechanism sub-assembly.

3. The speed reduction mechanism sub-assembly noise testing device according to claim 2, characterized in that: The sliding member includes two guide rails, two sliding blocks and a connecting plate. The guide rails are arranged along the axial direction of the rotating end of the driving component, and the two guide rails are parallel to each other and arranged at intervals, and are both connected to the frame. The sliding blocks are arranged one by one corresponding to the guide rails and are slidably mounted on the guide rails. The connecting plate is connected to the two sliding blocks and the clamping member.

4. The speed reduction mechanism sub-assembly noise testing device according to claim 3 is characterized in that: The speed reduction mechanism sub-assembly has an inner ring end and an outer ring end, the inner ring end of the speed reduction mechanism sub-assembly can rotate relative to the outer ring end, the clamping member includes a clamping frame, at least one clamping portion and at least one limiting portion, the clamping frame is provided with a clamping hole for accommodating the speed reduction mechanism sub-assembly, and the clamping hole passes through the clamping frame, the clamping portion is connected to the clamping frame and abuts against the outer ring end of the speed reduction mechanism sub-assembly, so as to limit the outer ring end of the speed reduction mechanism sub-assembly from rotating relative to the clamping frame, the limiting portion is connected to the clamping frame along the radial sliding direction of the clamping hole, and can abut against the speed reduction mechanism sub-assembly, so as to limit the speed reduction mechanism sub-assembly from sliding relative to the clamping frame along the axis of the clamping hole.

5. The speed reduction mechanism sub-assembly noise testing device according to claim 4 is characterized in that: The outer ring end of the speed reduction mechanism sub-assembly is evenly provided with a plurality of grooves along its circumference. The number of the clamping parts in the clamping member is multiple, and the clamping parts are arranged one-to-one corresponding to the grooves and are evenly arranged along the circumferential direction of the clamping hole. One end of the clamping part is clamped in the groove, and the other end is connected to the circumferential inner wall of the clamping hole.

6. The speed reduction mechanism sub-assembly noise testing device according to claim 4, characterized in that: The clamping frame is provided with at least one threaded hole along the radial direction of the clamping hole. The limiting portion comprises a screw and a ball head. One end of the screw is threadedly connected to the threaded hole, and the ball head is connected to the other end of the screw and is externally disposed on the clamping hole.

7. The speed reduction mechanism sub-assembly noise testing device according to claim 6, characterized in that: The number of the limiting parts in the clamping member is two, and the two limiting parts are distributed in a point-symmetrical manner along the axis of the clamping hole.

8. The speed reduction mechanism sub-assembly noise testing device according to claim 4, characterized in that: The driving assembly includes two support seats, a sensor, two couplings, a transmission shaft, a motor and a cover body. The two support seats are arranged at an interval with each other. The sensor is arranged between the two support seats. The sensor has a fixed end and two rotating ends. The fixed end of the sensor is connected to the frame. The two couplings are respectively arranged on the two support seats and connected to the rotating ends of the sensors. One coupling is detachably connected to the inner ring end of the reduction mechanism subassembly via the transmission shaft. The fixed end of the motor is connected to the support seat, and the output shaft is connected to the other coupling. The cover body covers the motor, the two support seats, the sensor and the two couplings.

9. The speed reduction mechanism sub-assembly noise testing device according to claim 8, characterized in that: The test assembly comprises a fixing frame and a noise meter. The fixing frame is arranged at one side of the guide rail and connected to the frame. The noise meter is arranged relative to the speed reduction mechanism subassembly and connected to the fixing frame.

10. The speed reduction mechanism sub-assembly noise testing device according to claim 9, characterized in that: It also includes a display component, which is connected to the frame and electrically connected to the motor, the sensor and the noise meter.

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