A noise testing device for a reducer

Abstract

The utility model relates to the technical field of noise testing of reducers, and discloses a noise testing device for reducers, comprising a test bench and a noise testing mechanism; the noise testing mechanism comprises a silent vertical plate, a silent side piece, a silent bottom plate, a connecting seat, a screw transmission device, a forward and reverse motor, a connecting rod, a base, a signal receiver, a signal processor, a signal amplifier, a supporting seat, a driving motor, a coupling, a vibration tester and a vibration sensor; through the setting of the test bench and the noise testing mechanism, the height position of the forward and reverse motors can be adjusted by the cooperation of a lifting cylinder, a lifting block, a mounting plate, a guide rod and a guide block, and testing machines of various sizes can be connected; the screw transmission device, the forward and reverse motor and the connecting rod can be adjusted by the cooperation of the position of the silent side piece, so that the silent vertical plate, the silent side piece and the silent bottom plate can be assembled into a silent box; the signal receiver, the signal processor and the signal amplifier can be cooperated to perform noise testing on the testing machine.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducer noise testing, in particular to a speed reducer noise testing device. Background Art

[0002] A reducer is a mechanical device used to slow down the output speed of an electric motor or engine. It increases the torque of the output shaft by reducing the speed of the input shaft. A reducer is usually composed of a gear transmission system. Through gears of different sizes or numbers, the speed and torque conversion between the input and output shafts is achieved. In the fields of industrial production and mechanical manufacturing, reducers are widely used in various equipment and mechanical systems to meet different speed and torque requirements.

[0003] The reducer is the intermediate link of the power device driving the actuator, which converts high speed and low torque into low speed and high torque. It is used in conjunction with the engine. During operation, the reducer will produce a certain amount of noise. If the noise exceeds a certain range, it means that the reducer has a fault. Therefore, after the reducer is assembled, it is necessary to detect the noise. Therefore, a noise test device for the reducer is required.

[0004] An existing noise testing device for a reducer has certain disadvantages when in use. When in use, the existing noise testing device for a reducer usually directly places the reducer in a soundproof room equipped with a noise tester. However, due to the diversity of models and specifications of reducers, it is necessary to disassemble and fix the driving device so as to adjust the position of the driving device so that the driving device is connected to the reducer, resulting in a long test preparation time and a slow test speed. Therefore, it cannot meet people's needs. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a noise testing device for a reducer, which can solve the technical problems raised in the background technology.

[0007] (II) Technical solution

[0008] The utility model is implemented by the following technical scheme: a noise testing device for a reducer, comprising a test bench and a noise testing mechanism arranged on the test bench; wherein the noise testing mechanism comprises a silent vertical plate detachably mounted on the upper end of the test bench, a silent side piece clamped with the silent vertical plate and a silent bottom plate detachably mounted on the upper end of the test bench; the silent vertical plate, the silent side piece and the silent bottom plate can be assembled into a silent box, and the silent box can effectively reduce the interference of external noise on the test results when the test machine performs noise testing, thereby ensuring the quietness and accuracy of the test environment; the noise testing mechanism also comprises a connecting seat symmetrically arranged on the outside of the silent side piece, a screw transmission device detachably mounted inside the connecting seat, a forward and reverse motor detachably mounted on one end of the connecting seat and a connecting rod connecting the silent side piece with the screw transmission device, and the forward and reverse motor can control the silent side piece to move horizontally through the connecting rod and the screw transmission device; the noise testing mechanism also comprises a base mounted on the upper end of the silent bottom plate, a signal receiver detachably mounted on the upper end of the base, a signal processor arranged on one side of the signal receiver and a detachable A signal amplifier is installed on the signal processor, and the signal amplifier amplifies the weak sound signal collected from the signal receiver for subsequent noise analysis and measurement. The signal receiver is used to collect the noise signal generated by the test machine, and the signal amplifier is used to perform spectrum analysis on the amplified sound signal to obtain the sound pressure level information at different frequencies, and process and analyze the collected data, and generate a test report; the noise testing mechanism also includes two groups of support seats detachably installed on one side of the base, a drive motor movably installed on the inner side of the support seat, and a coupling detachably installed on the drive motor; a lifting component for controlling the drive motor to lift is provided inside the support seat; a test machine connected to the coupling is detachably installed on the upper end of the base, and the noise testing mechanism also includes a vibration tester detachably installed on the upper end of the base, and a vibration sensor connected to the test machine is provided on the vibration tester. The vibration tester can measure the vibration signal generated by the test machine during operation through the vibration sensor, so as to provide more data support for analyzing the noise of the test machine.

[0009] Preferably, the lifting assembly includes a lifting cylinder detachably mounted inside a support seat, a first reinforcement block detachably mounted on an output shaft of the lifting cylinder, and a lifting block movably mounted on an outer wall of the support seat; a mounting plate is provided on the drive motor, and the lifting block is detachably connected to the mounting plate; a first lifting groove matching the lifting block is provided inside the support seat; the lifting cylinder can control the driving motor to lift and lower through the first reinforcement block and the lifting block; two sets of single-chip microcomputers are detachably mounted on the test bench, and the two sets of single-chip microcomputers respectively control the opening and closing of the lifting cylinder and the forward and reverse motors.

[0010] Preferably, the lifting assembly also includes a guide rod symmetrically arranged inside the support seat and a guide block movably mounted on the guide rod, the guide block is provided with a second reinforcement block connected to the mounting plate, and the inside of the support seat is symmetrically provided with a second lifting groove matching the guide block, the cooperation between the guide rod and the guide block can improve the stability of the mounting plate during movement and reduce the vibration of the drive motor during operation.

[0011] Preferably, the first reinforcement block is of a cylindrical structure, the cross-section of the guide block is of an elliptical structure, and a plurality of groups of mounting blocks are symmetrically arranged on the outer wall of the mounting plate, and the plurality of groups of mounting blocks are detachably fixed to the lifting block and the second reinforcement block, respectively.

[0012] Preferably, a reinforcement block is detachably mounted on the screw transmission device, one end of the connecting rod is detachably fixed to the reinforcement block, the inner wall of the silent side piece is provided with a groove matching the connecting rod, the reinforcement block is provided with a connecting hole connected to the connecting rod, and the inner side wall of the connecting seat is provided with a movable groove for horizontal movement with the reinforcement block.

[0013] Preferably, a sealing member in a “mouth”-shaped structure is vertically disposed on the inner side wall of the silent vertical plate, and the outer wall of the sealing member is in contact with the inner side wall of the silent vertical plate.

[0014] Preferably, a mounting strip is fixed to the rear side of the sound-absorbing vertical plate, the mounting strip is provided with a mounting rod detachably fixed to the upper end of the test bench, and the upper end of the test bench is provided with a mounting hole connected to the mounting rod.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a noise testing device for a reducer, which has the following beneficial effects:

[0017] The noise testing device of a reducer has a test bench and a noise testing mechanism. The lifting cylinder, the lifting block, the mounting plate, the guide rod and the guide block cooperate to adjust the height position of the forward and reverse motors, so that testing machines of various sizes can be connected. The screw transmission device, the forward and reverse motors and the connecting rod cooperate to adjust the position of the silent side parts, so that the silent vertical plates, the silent side parts and the silent bottom plate can be assembled into a silent box. The signal receiver, the signal processor and the signal amplifier cooperate to perform noise testing on the testing machine. The vibration tester and the vibration sensor can perform vibration testing on the testing machine, so as to improve the noise testing effect of the testing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partial structural diagram of the utility model.

[0019] Figure 2It is a partial structural diagram of the test bench and noise testing mechanism in the utility model.

[0020] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 It is a partial structural diagram of the driving motor and lifting assembly in the utility model.

[0022] Figure 5 It is a partial structural diagram of the silent side parts and the screw transmission device in the utility model.

[0023] In the figure: 1. test bench; 2. silent vertical plate; 3. silent side parts; 4. silent bottom plate; 5. connecting seat; 6. screw transmission device; 7. forward and reverse motor; 8. connecting rod; 9. base; 10. signal receiver; 11. signal processor; 12. signal amplifier; 13. support seat; 14. drive motor; 15. coupling; 16. test machine; 17. vibration tester; 18. vibration sensor; 19. lifting cylinder; 20. first reinforcement block; 21. lifting block; 22. mounting plate; 23. guide rod; 24. guide block; 25. second reinforcement block; 26. reinforcement block; 27. seal; 28. mounting strip; 29. ​​mounting rod. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] Example 1: Please refer to Figure 1 - Figure 5, a noise testing device for a reducer of the present embodiment comprises a test bench 1 and a noise testing mechanism arranged on the test bench 1; wherein the noise testing mechanism comprises a silent vertical plate 2 detachably mounted on the upper end of the test bench 1, a silent side piece 3 clamped with the silent vertical plate 2 and a silent bottom plate 4 detachably mounted on the upper end of the test bench 1; the silent vertical plate 2, the silent side piece 3 and the silent bottom plate 4 can be assembled into a silent box, and the silent box can effectively reduce the interference of external noise on the test results when the test machine 16 performs noise testing, thereby ensuring the quietness and accuracy of the test environment; the noise testing mechanism also comprises a connecting seat 5 symmetrically arranged on the outside of the silent side piece 3, a screw transmission device 6 detachably mounted inside the connecting seat 5, and a forward and reverse motor detachably mounted at one end of the connecting seat 5. 7 and a connecting rod 8 connecting the silent side piece 3 with the screw transmission device 6, the forward and reverse motor 7 can control the silent side piece 3 to move horizontally through the connecting rod 8 and the screw transmission device 6; the noise testing mechanism also includes a base 9 installed on the upper end of the silent bottom plate 4, a signal receiver 10 detachably installed on the upper end of the base 9, a signal processor 11 arranged on one side of the signal receiver 10 and a signal amplifier 12 detachably installed on the signal processor 11, the signal amplifier 12 amplifies the weak sound signal collected from the signal receiver 10 for subsequent noise analysis and measurement, the signal receiver 10 is used to collect the noise signal generated by the test machine 16, and the signal amplifier 12 is used to perform spectrum analysis on the amplified sound signal to obtain different The noise testing mechanism also includes two sets of support seats 13 detachably mounted on one side of the base 9, a drive motor 14 movably mounted on the inner side of the support seat 13, and a coupling 15 detachably mounted on the drive motor 14; a lifting assembly for controlling the drive motor 14 to be lifted and lowered is provided inside the support seat 13; a test machine 16 connected to the coupling 15 is detachably mounted on the upper end of the base 9, and the noise testing mechanism also includes a vibration tester 17 detachably mounted on the upper end of the base 9, and a vibration sensor 18 connected to the test machine 16 is provided on the vibration tester 17, and the vibration tester 17 can measure the vibration generated by the test machine 16 during operation through the vibration sensor 18. The vibration signal generated provides more data support for analyzing the noise of the test machine 16. A controller for controlling the opening and closing of the noise test mechanism is provided on the test bench 1. The lifting component is started to control the drive motor 14 to adjust the height position. One end of the test machine 16 is detachably connected to the coupling 15, and the test machine 16 is installed on the base 9. The forward and reverse motors 7 are started, and the silent side pieces 3 are controlled to move on the silent bottom plate 4 through the screw transmission device 6 and the connecting rod 8, so that the silent vertical plate 2, the silent side pieces 3 and the silent bottom plate 4 are assembled into a silent box. The test machine 16 is started, and the signal receiver 10, the signal processor 11 and the signal amplifier 12 cooperate to perform noise testing. The vibration sensor 18 and the vibration tester 17 perform vibration testing on the test machine 16.

[0026] The lifting assembly includes a lifting cylinder 19 detachably mounted inside the support seat 13, a first reinforcement block 20 detachably mounted on the output shaft of the lifting cylinder 19, and a lifting block 21 movably mounted on the outer wall of the support seat 13. A mounting plate 22 is provided on the drive motor 14. The lifting block 21 is detachably connected to the mounting plate 22. A first lifting groove matching the lifting block 21 is provided inside the support seat 13. The lifting cylinder 19 can control the driving motor 14 to lift and lower through the first reinforcement block 20 and the lifting block 21. Two sets of single-chip microcomputers are detachably mounted on the test bench 1. The two sets of single-chip microcomputers respectively control the opening and closing of the lifting cylinder 19 and the forward and reverse motor 7. The lifting cylinder 19 is started to drive the first reinforcement block 20 to move. The first reinforcement block 20 drives the lifting block 21 to move in the first lifting groove. The first reinforcement block 20 drives the mounting plate 22 to lift and lower.

[0027] The lifting assembly also includes a guide rod 23 symmetrically arranged inside the support seat 13 and a guide block 24 movably mounted on the guide rod 23. The guide block 24 is provided with a second reinforcement block 25 connected to the mounting plate 22. The support seat 13 is symmetrically provided with a second lifting groove matching the guide block 24. The cooperation between the guide rod 23 and the guide block 24 can improve the stability of the mounting plate 22 during movement and reduce the vibration of the driving motor 14 during operation. The mounting plate 22 is lifted and lowered to drive the second reinforcement block 25 to move, and the second reinforcement block 25 drives the guide block 24 to move on the guide rod 23.

[0028] The first reinforcing block 20 is a cylindrical structure, the cross section of the guide block 24 is an elliptical structure, and the outer wall of the mounting plate 22 is symmetrically provided with a plurality of groups of mounting blocks, which are detachably fixed to the lifting block 21 and the second reinforcing block 25 .

[0029] A reinforcement block 26 is detachably mounted on the screw transmission device 6, one end of the connecting rod 8 is detachably fixed to the reinforcement block 26, the inner wall of the silent side piece 3 is provided with a groove matching the connecting rod 8, the reinforcement block 26 is provided with a connecting hole connected to the connecting rod 8, and the inner side wall of the connecting seat 5 is provided with a movable groove for horizontal movement with the reinforcement block 26, the connecting rod 8 is installed on the reinforcement block 26, the forward and reverse motors 7 are started, the screw transmission device 6 is driven to work, the screw transmission device 6 drives the reinforcement block 26 to move, and the reinforcement block 26 drives the silent side piece 3 to move.

[0030] A sealing member 27 in a “mouth”-shaped structure is vertically disposed on the inner side wall of the silent vertical plate 2 , and the outer wall of the sealing member 27 is in contact with the inner side wall of the silent vertical plate 2 .

[0031] A mounting strip 28 is fixed to the rear side of the mute vertical plate 2 , and a mounting rod 29 detachably fixed to the upper end of the test bench 1 is provided on the mounting strip 28 , and a mounting hole connected to the mounting rod 29 is provided at the upper end of the test bench 1 .

[0032] When the noise testing device of the reducer is used, the lifting component is started, the driving motor 14 is controlled to adjust the height position, one end of the testing machine 16 is detachably connected to the coupling 15, the testing machine 16 is installed on the base 9, the forward and reverse motors 7 are started, and the silent side pieces 3 are controlled to move on the silent bottom plate 4 through the screw transmission device 6 and the connecting rod 8, so that the silent vertical plate 2, the silent side pieces 3 and the silent bottom plate 4 are assembled into a silent box, the testing machine 16 is started, and the signal receiver 10, the signal processor 11 and the signal amplifier 12 cooperate to perform noise testing, and the vibration sensor 18 and the vibration tester 17 perform vibration testing on the testing machine 16;

[0033] Start the lifting cylinder 19 to drive the first reinforcement block 20 to move, the first reinforcement block 20 drives the lifting block 21 to move in the first lifting slot, the first reinforcement block 20 drives the mounting plate 22 to lift, the mounting plate 22 lifts and drives the second reinforcement block 25 to move, and the second reinforcement block 25 drives the guide block 24 to move on the guide rod 23;

[0034] The forward and reverse motors 7 are started to drive the screw transmission device 6 to work, the screw transmission device 6 drives the reinforcement block 26 to move, and the reinforcement block 26 drives the silent side piece 3 to move.

[0035] The noise testing device of the reducer has a test bench 1 and a noise testing mechanism, and the lifting cylinder 19, the lifting block 21, the mounting plate 22, the guide rod 23 and the guide block 24 cooperate to adjust the height position of the forward and reverse motor 7, so that the testing machine 16 of various sizes can be connected. The screw transmission device 6, the forward and reverse motor 7 and the connecting rod 8 cooperate to adjust the position of the silent side piece 3, so that the silent vertical plate 2, the silent side piece 3 and the silent bottom plate 4 can be assembled into a silent box. The signal receiver 10, the signal processor 11 and the signal amplifier 12 cooperate to perform noise testing on the testing machine 16. The vibration tester 17 and the vibration sensor 18 can perform vibration testing on the testing machine 16, so as to improve the noise testing effect of the testing machine 16.

[0036] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A noise testing device for a reducer, characterized in that: include: A test bench (1) and a noise testing mechanism arranged on the test bench (1); The noise testing mechanism comprises a noise-removable vertical plate (2) mounted on the upper end of the test bench (1), a noise-removable side member (3) engaged with the noise-removable vertical plate (2), and a noise-removable bottom plate (4) mounted on the upper end of the test bench (1); The sound-proof vertical plate (2), the sound-proof side pieces (3) and the sound-proof bottom plate (4) can be assembled into a sound-proof box; The noise testing mechanism further comprises a connecting seat (5) symmetrically arranged on the outside of the silent side piece (3), a screw transmission device (6) detachably mounted inside the connecting seat (5), a forward and reverse motor (7) detachably mounted at one end of the connecting seat (5), and a connecting rod (8) connecting the silent side piece (3) and the screw transmission device (6); The noise testing mechanism further comprises a base (9) mounted on the upper end of the mute bottom plate (4), a signal receiver (10) detachably mounted on the upper end of the base (9), a signal processor (11) disposed on one side of the signal receiver (10), and a signal amplifier (12) detachably mounted on the signal processor (11); The noise testing mechanism further comprises two sets of support seats (13) detachably mounted on one side of the base (9), a drive motor (14) movably mounted on the inner side of the support seat (13), and a coupling (15) detachably mounted on the drive motor (14); A lifting component for controlling the driving motor (14) to lift and lower is provided inside the support seat (13); A testing machine (16) connected to the coupling (15) is detachably mounted on the upper end of the base (9), and the noise testing mechanism further comprises a vibration tester (17) detachably mounted on the upper end of the base (9), wherein the vibration tester (17) is provided with a vibration sensor (18) connected to the testing machine (16).

2. A noise testing device for a reducer as claimed in claim 1, characterized in that: The lifting assembly comprises a lifting cylinder (19) detachably mounted inside a support seat (13), a first reinforcement block (20) detachably mounted on an output shaft of the lifting cylinder (19), and a lifting block (21) movably mounted on an outer wall of the support seat (13); a mounting plate (22) is provided on the drive motor (14); the lifting block (21) is detachably connected to the mounting plate (22); and a first lifting groove matching the lifting block (21) is provided inside the support seat (13).

3. A noise testing device for a reducer as claimed in claim 2, characterized in that: The lifting assembly further comprises a guide rod (23) symmetrically arranged inside the support seat (13) and a guide block (24) movably sleeved on the guide rod (23); a second reinforcement block (25) connected to the mounting plate (22) is provided on the guide block (24); and a second lifting groove matching the guide block (24) is symmetrically provided inside the support seat (13).

4. A noise testing device for a reducer as claimed in claim 3, characterized in that: The first reinforcement block (20) is of cylindrical structure, the cross section of the guide block (24) is of elliptical structure, and the outer wall of the mounting plate (22) is symmetrically provided with a plurality of groups of mounting blocks, wherein the plurality of groups of mounting blocks are detachably fixed to the lifting block (21) and the second reinforcement block (25), respectively.

5. A noise testing device for a reducer as claimed in claim 1, characterized in that: A reinforcing block (26) is detachably mounted on the screw transmission device (6), one end of the connecting rod (8) is detachably fixed to the reinforcing block (26), and an inner wall of the silent side piece (3) is provided with a groove matching the connecting rod (8).

6. A noise testing device for a reducer as claimed in claim 1, characterized in that: A sealing member (27) in a "mouth"-shaped structure is vertically arranged on the inner side wall of the silent vertical plate (2), and the outer wall of the sealing member (27) is in contact with the inner side wall of the silent vertical plate (2).

7. A noise testing device for a reducer as claimed in claim 1, characterized in that: A mounting strip (28) is fixed to the rear side of the noise-reducing vertical plate (2), and a mounting rod (29) is provided on the mounting strip (28) and is detachably fixed to the upper end of the test bench (1).

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