Multi-channel vibration active control structure of two-stage speed reducer
By using a multi-channel active vibration control structure for a two-stage reducer, and employing a signal processing system and piezoelectric actuators to perform real-time vibration control on the input and output shafts of the reducer, the problems of reducer vibration and noise are solved, equipment performance and lifespan are improved, and costs are reduced.
Patent Information
- Application Number
- CN202423248581.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing speed reducers generate vibration and noise during operation due to factors such as gear meshing and wear, leading to performance degradation and equipment damage. Furthermore, passive control methods are costly and cannot adapt to different types of vibration.
A multi-channel vibration active control structure with a two-stage reducer is adopted. The vibration of the input and output shafts is controlled in real time through a signal processing system and a piezoelectric actuator. The signal is collected by an acceleration sensor, and the piezoelectric actuator suppresses vibration through an anti-load rod. The position of the piezoelectric actuator is adjusted by a knob and a worm gear drive.
It effectively suppresses the vibration and noise of the reducer, improves the service life and processing accuracy of the equipment, reduces costs, and adapts to the vibration control needs of different excitation types.
Smart Images
Figure CN223524359U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of reducers, in particular to a multi-channel vibration active control structure of a two-stage reducer. BACKGROUND
[0002] In a mechanical transmission system, a reducer is an indispensable important component, which can realize the transformation of rotation speed and torque to meet the needs under different working conditions. However, during the working process of the reducer, due to various factors such as gear meshing, gear damage, etc., vibration and noise will be generated, which not only affects the performance and service life of the reducer, but also may affect the machining accuracy of the equipment, and even cause damage and failure of the equipment.
[0003] The passive control of the conventional reducer has certain limitations and changes the material of the gear, resulting in the increase of cost, and different gears have different excitation types, which will cause different vibration forms, and the passive vibration control needs to be designed differently for different excitation types; and when the gear is worn or damaged due to working operation, the passive control system cannot well solve this problem, therefore, how to solve the above problems is the purpose of the application.
[0004] The above content is only used to assist in understanding the technical solutions of the application, and does not represent the acknowledgement of the above content as the closest prior art to the application. SUMMARY
[0005] Based on this, the application provides a multi-channel vibration active control structure of a two-stage reducer to solve one of the above technical problems.
[0006] The technical solution adopted by the application to solve the technical problem is a multi-channel vibration active control structure of a two-stage reducer, comprising: a gear box and a reduction gear set arranged inside the gear box, a control structure, a signal processing system arranged outside the gear box, the reduction gear set comprising at least one input shaft and one output shaft, first bearings arranged on both sides of the gear box and matched with the reduction gear set, the signal processing system being capable of receiving information of rotation of the input shaft and the output shaft and sending signals to the control structure, and the control structure being used for receiving signals fed back by the signal processing system and controlling vibration of the input shaft and the output shaft.
[0007] In some embodiments, the control structure comprises a base, a piezoelectric actuator, an anti-load rod and a second bearing, the second bearing being arranged on the input shaft and the output shaft, the base being mounted on the inner wall of the gear box, the piezoelectric actuator being movably arranged on the base, and the anti-load rod being capable of being driven by the piezoelectric actuator to abut on the second bearing to control vibration of the input shaft and the output shaft.
[0008] In some embodiments, an adjusting knob is arranged on the base to adjust the position of the piezoelectric actuator on the base, and the adjusting knob adjusts the piezoelectric actuator through any one of worm gear transmission, gear and rack transmission.
[0009] In some embodiments, the signal processing system comprises an acceleration sensor, a charge amplifier, a low-pass filter, a signal collector and a PC, and the acceleration sensor is arranged on one side of the first bearing.
[0010] In some embodiments, the input shaft and the output shaft are connected to the motor and the working mechanism respectively through a shaft coupling.
[0011] In some embodiments, the direction of the force output by the piezoelectric actuator is perpendicular to the axial direction of the input shaft or the output shaft.
[0012] The application has the advantages that the first bearing can make both sides of the input shaft and the output shaft exceed the gear box to achieve the effect of multiple inputs and multiple outputs, the acceleration sensor is arranged to collect the speed of the input shaft and the output shaft rotating in the first bearing, and the two piezoelectric actuators are used to control the vibration of the input shaft and the output shaft, the adjusting knob is arranged to better adjust the acting position of the piezoelectric actuator on the input shaft and the output shaft, and the adjusting knob can more effectively control the reduction gear set. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.
[0014] Fig. 1 is a schematic diagram of the three-dimensional structure of the application.
[0015] Fig. 2 is a schematic diagram of the internal structure of the application.
[0016] Fig. 3 is a schematic diagram of the signal processing system flow of the application.
[0017] Explanation of reference numerals: 1, gear box; 11, first bearing; 12, acceleration sensor; 2, reduction gear set; 21, input shaft; 22, output shaft; 3, control structure; 31, base; 32, piezoelectric actuator; 33, anti-load rod; 34, second bearing; 35, adjusting knob; 4, shaft coupling. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application. In addition, the technical solutions in various embodiments can be combined with each other, but the combination of technical solutions should be based on the fact that a person of ordinary skill in the art can realize the combination, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.
[0019] In the embodiments of the present application, as shown in the accompanying drawings, Figs. 1-3 The present application provides a two-stage speed reducer multi-channel vibration active control structure 3, mainly comprising: a gear box 1 and a speed reduction gear set 2 arranged inside the gear box 1, a control structure 3, a signal processing system arranged outside the gear box 1, the speed reduction gear set 2 comprising at least one input shaft 21 and one output shaft 22, first bearings 11 arranged on both sides of the gear box 1 and matched with the speed reduction gear set 2, the signal processing system being capable of receiving information of rotation of the input shaft 21 and the output shaft 22 and sending signals to the control structure 3, the control structure 3 being used for receiving signals fed back by the signal processing system and controlling vibration of the input shaft 21 and the output shaft 22.
[0020] Specifically, the input shaft 21 rotates to drive the speed reduction gear set 2 to start moving, the signal processing system can effectively read vibration signals of the input shaft 21 and the output shaft 22, analyze and calculate the acceleration, and transmit the calculation result to the control structure 3, and the control structure 3 controls the input shaft 21 and the output shaft 22 according to the information transmitted by the signal processing system.
[0021] Some preferred / improved embodiments based on the above embodiments will be described below. The following embodiments can be selected or combined.
[0022] Specifically, the control structure 3 comprises a base 31, a piezoelectric actuator 32, an anti-load rod 33, and a second bearing 34 arranged on the input shaft 21 and the output shaft 22, the base 31 is mounted on the inner wall of the gear box 1, the piezoelectric actuator 32 is movably arranged on the base 31, the anti-load rod 33 can be driven by the piezoelectric actuator 32 to abut on the second bearing 34 to control the vibration of the input shaft 21 and the output shaft 22, the piezoelectric actuator 32 can receive a specific feed amount transmitted by the signal processing system to drive the anti-load rod 33, and the anti-load rod 33 abuts on the outer wall of the second bearing 34, and the rotation of the input shaft 21 or the output shaft 22 can be effectively inhibited when the anti-load rod 33 abuts on the second bearing 34.
[0023] Preferably, the base 31 is provided with an adjusting knob 35 capable of adjusting the position of the piezoelectric actuator 32 on the base 31, and the adjusting knob 35 adjusts the piezoelectric actuator 32 by any one of worm gear transmission and rack and pinion transmission, so that the piezoelectric actuator 32 acts on the maximum vibration displacement of the input shaft 21 and the output shaft 22, and the reduction gear set 2 can be more effectively controlled.
[0024] Referring to Fig. 3 As shown, the signal processing system comprises an acceleration sensor 12, a charge amplifier, a low-pass filter, a signal collector, and a PC, the acceleration sensor 12 is arranged on one side of the first bearing 11, specifically, the acceleration sensor 12 converts the vibration signal into a voltage signal, the charge amplifier amplifies the voltage signal, the signal collector collects data, and the voltage signal is converted into a digital signal and transmitted to the PC, the PC builds a control algorithm in a simulink module and converts it into C code required by the controller, the generated target code is transmitted to the controller for calculation to obtain the control voltage required by the piezoelectric actuator 32, which is input to a power amplifier, and the piezoelectric actuator 32 is controlled by the power amplifier, and the piezoelectric actuator 32 is driven by the control voltage signal to damp the input shaft 21 and the output shaft 22.
[0025] Specifically, in order to flexibly connect the motor and the working mechanism to the reduction set, the input shaft 21 and the output shaft 22 are connected to the motor and the working mechanism, respectively, through a shaft coupling 4.
[0026] Specifically, in order to improve the control precision, the direction of the force output by the piezoelectric actuator 32 is perpendicular to the axial direction of the input shaft 21 or the output shaft 22.
[0027] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.
[0028] Finally, it should be noted that the above is only a preferred embodiment of the present application, and the foregoing embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the technical solutions described in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A two-stage reducer multi-channel vibration active control structure, comprising a gear box body and a reduction gear set arranged inside the gear box body, a control structure, characterized in that, The gear box is externally provided with a signal processing system, the reduction gear set comprises at least one input shaft and one output shaft, two sides of the gear box are provided with first bearings cooperating with the reduction gear set, the signal processing system can receive information of rotation of the input shaft and the output shaft and send signals to the control structure, and the control structure is used for receiving signals fed back by the signal processing system and controlling vibration of the input shaft and the output shaft.
2. A two-stage speed reducer multi-channel vibration active control structure according to claim 1, characterized in that, The control structure comprises a base, a piezoelectric actuator, a load resisting rod and a second bearing, the second bearing is arranged on the input shaft and the output shaft, the base is mounted on an inner wall of the gear box, the piezoelectric actuator is movably arranged on the base, and the load resisting rod can be driven by the piezoelectric actuator to abut on the second bearing to control vibration of the input shaft and the output shaft.
3. A two-stage speed reducer multi-channel vibration active control structure according to claim 2, characterized in that, An adjusting knob is arranged on the base and can adjust a position of the piezoelectric actuator on the base, and the adjusting knob adjusts the piezoelectric actuator by any one of worm gear transmission and rack and pinion transmission.
4. The multi-channel vibration active control structure of a two-stage speed reducer according to claim 1, wherein, The signal processing system comprises an acceleration sensor, a charge amplifier, a low-pass filter, a signal collector and a PC, and the acceleration sensor is arranged on one side of the first bearing.
5. The two-stage speed reducer multi-channel vibration active control structure according to claim 1, characterized in that, The input shaft and the output shaft are connected with a motor and a working mechanism respectively through a shaft coupling.
6. A two-stage speed reducer multi-channel vibration active control structure according to claim 2, characterized in that, A direction of an output force of the piezoelectric actuator is perpendicular to a direction of an axis of the input shaft or the output shaft.