A dynamic vibration absorption device, a dynamic vibration absorption and noise reduction system for industrial equipment and a method thereof

By designing a power vibration absorbing device that can adjust stiffness, the problem of strong sensitivity of the power vibration absorber parameters in cigarette equipment and narrow effective frequency range is solved, effectively controlling the vibration and noise of cigarette equipment is achieved, and the working environment is improved.

CN119755257APending Publication Date: 2025-04-04CHONGQING CHINA TOBACCO IND CO LTD
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Patent Information

Application Number
CN202411760475.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-03
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

When used in cigarette equipment, existing power vibration absorbers have problems such as strong parameter sensitivity and narrow effective frequency range, which makes it difficult to effectively reduce the vibration and noise of cigarette equipment.

Method used

A power vibration absorption device is designed, which includes a base, a driver, a screw, a nut seat and a mass. The stiffness of the power vibration absorption device is adjusted by changing the inter-beam span of the combined beams to adapt to the different working conditions of the wrapping equipment and the changes in the surrounding environment. The device adjusts its stiffness in real time through wireless control instructions to achieve vibration suppression of the target vibration source.

Benefits of technology

By adjusting the stiffness of the power vibration absorption device, the vibration of relevant parts of the wrapping equipment can be effectively reduced, vibration radiation noise can be reduced, and the operator's working environment can be improved. The system can adaptively adjust vibration absorption parameters to adapt to complex equipment operating conditions and surrounding environment changes.

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Abstract

The present invention belongs to the field of vibration control technology, and specifically relates to a dynamic vibration absorption device, a dynamic vibration absorption and noise reduction system and method for industrial equipment, the dynamic vibration absorption device includes a base and a driver installed on the base, the output shaft of the driver is connected to a screw; the screw is threadedly connected to a nut seat, one side of the base and the nut seat is commonly connected to a mass block through a connecting piece, and the other side of the base and the nut seat is also commonly connected to a mass block through a connecting piece; the driver drives the nut seat to move through the screw to change the span between the two mass blocks; wherein the connecting piece is an elastic tension and compression rod. In the present application, the driver can adjust the corresponding speed and rotation angle according to the driving control instruction, and then adjust the span between the two mass blocks, so as to achieve the purpose of changing the vibration absorption parameters of the dynamic vibration absorption device, and can adapt to the vibration changes of the vibration source.
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Description

Technical Field

[0001] The present invention belongs to the technical field of vibration control, and in particular relates to a dynamic vibration absorption device, an industrial equipment dynamic vibration absorption and noise reduction system and a method. Background Art

[0002] The cigarette making machine group includes the feeder, cigarette making machine and cigarette assembler, which are the core equipment in the cigarette production process. These equipments may become the vibration source during operation, generate noise and vibration, and affect the working environment around the equipment. In order to maintain or improve the working environment, it is necessary to control the vibration and noise of the relevant parts of the cigarette making machine group.

[0003] Dynamic vibration absorption technology is a vibration control technology that is parallel to buffering vibration isolation and damping vibration elimination. Due to its excellent vibration reduction performance, it has been widely used in vibration control of various mechanical equipment, buildings, and bridges. At present, the research and design of dynamic vibration absorbers have made significant progress. They not only play an important role in the vibration control of traditional mechanical equipment, but also show great application potential in emerging fields such as urban rail transit and large-span buildings. The key points of dynamic vibration absorption technology are as follows: Absorber type: Common dynamic vibration absorbers include passive vibration absorbers, active vibration absorbers and semi-active vibration absorbers, each with its own advantages and disadvantages and applicable scenarios. Design parameters: The design of the vibration absorber needs to consider parameters such as natural frequency, damping ratio, and mass to achieve the best vibration reduction effect. Control strategy: Active and semi-active vibration absorbers usually require complex control algorithms to adjust parameters in real time to adapt to different vibration environments.

[0004] At present, the control strategies for dynamic vibration absorbers include but are not limited to: 1. "Dynamics Research on a Type of Self-parameter Dynamic Vibration Absorber Shock Absorption System", this document combines the theory and methods of nonlinear dynamics and nonlinear vibration to study the complex dynamic behavior and chaotic vibration control of the self-parameter dynamic vibration absorber system, and proposes a method to achieve passive control of system vibration by changing the nonlinear oscillator stiffness of the self-parameter dynamic vibration absorber system. 2. "Research on the Vibration Absorption Performance of Vehicle Body Dynamic Vibration Absorbers Considering Vehicle-Track Coupling", this document aims to reduce the vertical vibration of the vehicle body of urban rail transit vehicles, establishes a coupling model of the vertical vibration of the vehicle and track containing dynamic vibration absorbers, focuses on the design method of the dynamic vibration absorber after considering the influence of the track system, and proposes a novel vibration absorption performance evaluation index (DVA vibration absorption index) of the dynamic vibration absorber that considers the vehicle speed change and the probability of speed range operation. 3. "Vibration Control and Parameter Optimization of Dynamic Vibration Absorber Based on Real-time Frequency Identification". This document proposes a new frequency-modulated dynamic vibration absorber device based on magnetorheological elastomer. By changing the stiffness of the dynamic vibration absorber, the current of the frequency-modulated dynamic vibration absorber can be adjusted to control the vibration response of the controlled structure in real time.

[0005] However, there are few technical literatures on applying dynamic vibration absorption technology to noise control in cigarette equipment. Dynamic vibration absorption technology has difficulties such as strong parameter sensitivity and narrow effective frequency range. In production practice, how to apply dynamic vibration absorbers to cigarette equipment for noise control in a simple and applicable manner is a problem. Summary of the invention

[0006] The purpose of the present invention is to provide a dynamic vibration absorption device, an industrial equipment dynamic vibration absorption noise reduction system and method, which are used to solve the problems of strong parameter sensitivity and narrow effective frequency range existing in the application of existing dynamic vibration absorbers to cigarette making equipment.

[0007] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows: In the first aspect, a dynamic vibration absorption device includes a base and a driver installed on the base, wherein the output shaft of the driver is connected to a screw; the screw is threadedly connected to a nut seat, one side of the base and the nut seat is commonly connected to a mass block through a connecting piece, and the other side of the base and the nut seat is also commonly connected to a mass block through a connecting piece; the driver drives the nut seat to move through the screw to change the span between the two mass blocks; wherein the connecting piece is an elastic tension and compression rod.

[0008] From a structural point of view, the present invention comprises a combined beam structure composed of a nut seat, a connecting piece and a mass block; the rotation of the driver drives the screw rod to rotate, so that the connecting piece and the mass block connected to the nut seat move accordingly, thereby changing the span between the two mass blocks, that is, changing the span between beams of the combined beam, and further changing the stiffness of the entire dynamic vibration absorbing device. In this way, the dynamic vibration absorbing device adjusts its own natural vibration frequency through the change of stiffness, can adapt to different operating conditions of the winding and wrapping equipment and changes in the surrounding environment, and minimizes the vibration of relevant parts of the winding and wrapping equipment as much as possible, and reduces the vibration radiation noise; thereby improving the working environment of the operator.

[0009] In a further limitation, the driver is connected to a wireless receiver, and the wireless receiver is used to receive a drive control instruction and send it to a control end of the driver, and the control end of the driver executes the drive control instruction to control the operation of the driver.

[0010] The drive control instruction is generated by determining the excited vibration frequency of the vibration source according to the noise signal and the vibration signal, calculating the stiffness value of the dynamic vibration absorption device, and calculating the rotation angle and speed of the driver according to the stiffness value. The drive control instruction controls the driver to rotate, thereby driving the screw to rotate, changing the span between the combined beams, and changing the stiffness of the entire dynamic vibration absorption device.

[0011] According to a further definition, one end of the screw rod away from the driver is connected to one end of a coupling, and the other end of the coupling is rotatably connected to a target vibration source.

[0012] In a second aspect, a dynamic vibration absorption and noise reduction system for industrial equipment includes a control module and a dynamic vibration absorption device, wherein the control module is connected to a first signal acquisition module and a second signal acquisition module; At least one of the first signal acquisition modules is disposed at a target vibration source of the industrial equipment, and is used to collect vibration data of the target vibration source; At least one of the second signal acquisition modules is disposed around the industrial equipment and is used to collect noise data generated by the target vibration source; The control module analyzes the excited vibration characteristics of the target vibration source according to the vibration data and the noise data, and outputs a drive control instruction according to the excited vibration characteristics to control the dynamic vibration absorbing device to suppress the vibration of the target vibration source.

[0013] The present invention can realize closed-loop control of the dynamic vibration absorption device by setting a control module, a first signal acquisition module and a second signal acquisition module; it can adaptively and real-timely adjust the stiffness parameters or stiffness properties of the dynamic vibration absorption device according to the acquired sensor data, i.e., vibration data and noise data; the stiffness parameters or stiffness properties can be characterized by the span between beams of the composite beam; so as to change the vibration absorption parameters of the dynamic vibration absorption device to adapt to the vibration and noise changes caused by changes in complex coupling factors such as equipment working conditions and surrounding environment.

[0014] Among them, the target vibration source of industrial equipment can be the relevant parts of the packaging equipment that will generate vibration and noise, specifically the protective cover, protective shell, etc. in the wire feeder, cigarette rolling machine or assembler.

[0015] According to a further limitation, the first signal acquisition module includes a first data collector and at least one vibration sensor connected to the first data collector; the second signal acquisition module includes a second data collector and at least one pickup connected to the second data collector.

[0016] According to a further limitation, the first data collector, the second data collector or the control module is connected to a filter amplifier, and the filter amplifier is used to filter and amplify the vibration data and noise data.

[0017] According to further definition, the control module at least includes a control unit and a wireless communication unit, the wireless communication unit is used to build a wireless communication network to connect the control unit with the first signal acquisition module, the second signal acquisition module and the driver in the dynamic vibration absorption device; the control unit is used to receive and process vibration data and noise data, and output drive control instructions.

[0018] In a third aspect, a method for dynamic vibration absorption and noise reduction of industrial equipment is provided, which is used in the dynamic vibration absorption and noise reduction system of industrial equipment; the method comprises: Acquire vibration data and noise data generated by a target vibration source; Determining a target stiffness parameter of the dynamic vibration absorbing device according to the acquired vibration data and the noise data; Controlling the dynamic vibration absorbing device to adjust to the target stiffness parameter, and suppressing the vibration of the target vibration source by the dynamic vibration absorbing device; The vibration data and noise data obtained after the dynamic vibration absorbing device is adjusted are monitored, and the dynamic vibration absorbing device is closed-loop controlled.

[0019] In a further limitation, the method also includes: training the migrated machine learning model using a sample set made from vibration data and noise data to obtain a data analysis model.

[0020] The invention adopting the above technical solution has the following advantages: In the present application, the dynamic vibration absorbing device can effectively reduce the vibration amplitude of the target vibration source and improve the stability and service life of the equipment.

[0021] In the present application, the dynamic vibration absorption device is controlled to adjust its own stiffness properties and adaptively adjust the vibration absorption parameters to adapt to the vibration environment of different frequencies and amplitudes of the equipment. By adjusting its vibration absorption parameters, control of different vibration characteristics can be achieved.

[0022] In the industrial equipment dynamic vibration absorption and noise reduction system of the present application, the signal detection, signal processing and transmission of vibration and noise, and the output drive control command control of the dynamic vibration absorption device to adjust the stiffness properties form a control closed loop; it can better adapt to the changes in vibration frequencies of various orders and realize complex control of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings; Figure 1 It is a structural schematic diagram of a dynamic vibration absorbing device of the present invention; Figure 2 This is a schematic diagram of the operation flow of a dynamic vibration absorption and noise reduction system for industrial equipment according to the present invention; Figure 3 This is a structural block diagram of a dynamic vibration absorption and noise reduction system for industrial equipment according to the present invention; Figure 4 It is a schematic diagram of the assembly of the dynamic vibration absorption device in the present invention in the dynamic vibration absorption and noise reduction system of industrial equipment; Figure 5 It is a schematic flow chart of a method for dynamic vibration absorption and noise reduction of industrial equipment according to the present invention; The main component symbols are described as follows: 10. Attaching machine; 20. Cigarette making machine; 30. Thread feeding machine; 100. Power vibration absorbing device; 110. Vibration absorbing device 1; 120. Vibration absorbing device 2; 130. Vibration absorbing device 3; 210. First vibration sensor; 220. Second vibration sensor; 230. Third vibration sensor; 240. Nth vibration sensor; 310. First microphone; 320. Second microphone; 330. Third microphone; 340. Mth microphone; 410. Vibration signal collector; 420. Noise signal collector; 101. Driver; 102. Mass block; 103. Screw rod; 104. Nut seat; 105. Elastic tension and compression rod. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions of the specification, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "back", etc., are only referenced to the directions of the drawings and are not used to limit the scope of protection of the present invention. Embodiment 1,

[0025] like Figure 1 As shown, a dynamic vibration absorption device of an embodiment of the present invention includes a base and a driver 101 installed on the base, the driver 101 can be a micro motor, and the output shaft of the micro motor is connected to a screw rod 103; the screw rod 103 is threadedly connected to a nut seat 104, one side of the base and the nut seat 104 is connected to a mass block 102 through a connecting piece, and the other side of the base and the nut seat 104 is also connected to a mass block 102 through a connecting piece; the driver 101 drives the nut seat 104 to move through the screw rod 103 to change the span between the two mass blocks 102; the connecting piece is an elastic tension and compression rod 105. Among them, the nut seat 104, the mass block 102 and the elastic tension and compression rods 105 connected at both ends of the mass block 102 constitute a combined beam structure. In the combined beam, the base is fixed, and the nut seat 104 is driven by the screw rod 103 to rise or fall, which will reduce or increase the distance between the two mass blocks 102, and the span between the beams will increase or decrease accordingly; that is, the span between the beams of the combined beam is changed, and then the stiffness of the entire dynamic vibration absorbing device 100 is changed. In this way, the dynamic vibration absorbing device 100 adjusts its own natural vibration frequency through the change of stiffness, can adapt to different operating conditions of the winding and wrapping equipment and changes in the surrounding environment, and minimize the vibration of the relevant parts of the winding and wrapping equipment as much as possible, and reduce the vibration radiation noise; thereby improving the working environment of the operator.

[0026] In this embodiment, the driver 101 is connected to a wireless receiver, which is connected to a computer device via a wireless communication network (the wireless communication network adopts a WiFi network or a Bluetooth network). The computer device analyzes the relevant parts of the packaging device (i.e. Figure 2 The vibration signal and noise signal collected by the vibration absorbing object in the vibration absorbing object are used to determine the excited vibration frequency of the relevant parts, so as to issue a drive control instruction; the wireless receiver is used to receive the drive control instruction and send it to the control end of the driver 101, and the control end of the driver 101 executes the drive control instruction to control the operation of the driver 101; the control process can be seen in Figure 2 .

[0027] Among them, Figure 3 As shown, the relevant parts of the winding equipment are the parts that generate vibration, such as the cover of the wire feeder; when the driver 101 adopts a micro motor, the control end of the driver 101 is a matching embedded controller, and a position encoder can also be arranged on the micro motor, through which the speed and rotation angle of the micro motor can be monitored. For the micro motor, the upper computer system determines the excited vibration frequency of the vibration source, that is, the cover of the wire feeder, according to the noise signal and the vibration signal, and calculates the required stiffness value of the power vibration absorbing device 100, and calculates the required rotation angle and speed of the micro motor according to the required stiffness value; in this way, the drive control instruction is generated according to the required rotation angle and speed of the micro motor; the micro motor is controlled to rotate by the drive control instruction, thereby driving the screw 103 to rotate, changing the span between the beams of the composite beam, reaching the required stiffness value of the power vibration absorbing device 100, and also changing the stiffness of the entire power vibration absorbing device 100, adapting to the purpose of the vibration frequency of the cover of the wire feeder, and achieving the effect of suppressing vibration.

[0028] In this embodiment, if Figure 4 As shown, one end of the screw rod 103 away from the driver 101 is connected to one end of the coupling, and the other end of the coupling is rotatably connected to the target vibration source; when the target vibration source is the cover of the wire feeder, a shell end bearing is installed on the cover of the wire feeder, and the other end of the coupling is connected to the shell end bearing to achieve a rotational connection.

[0029] The power vibration absorbing device 100 in this embodiment is on the cover of the wire feeder, and the power vibration absorbing device 100 is fixed to the cover by a base and screws. The mass block 102 connected to the elastic tension and compression rod 105 serves as a free end and can move up and down and left and right; the coupling connected to the screw rod 103 limits the screw rod 103; the rotation of the screw rod 103 can drive the nut seat 104 to rise and fall; the rise and fall of the nut seat 104 pulls the elastic tension and compression rod 105 to change the span between beams of the composite beam. Embodiment 2,

[0030] like Figure 3 As shown, in this embodiment, a dynamic vibration absorption and noise reduction system for industrial equipment includes a control module and a dynamic vibration absorption device 100, the control module includes a control unit and a wireless communication unit, the wireless communication unit is used to build a wireless communication network to connect the control unit with the first signal acquisition module, the second signal acquisition module and the driver 101 in the dynamic vibration absorption device 100, and the wireless communication network can be built based on the WiFi communication protocol and the Bluetooth communication protocol; the control unit adopts a computer device to receive and process the vibration data and the noise data through the computer device, and outputs the drive control instruction according to the processing result.

[0031] The power vibration absorbing device 100 can be arranged on the housing of the thread feeder 30, the housing of the cigarette making machine 20, the housing of the assembler 10, and the connecting housing between adjacent housings in the cigarette making machine group. There are three power vibration absorbing devices 100, namely, vibration absorbing device 1 110, vibration absorbing device 2 120, and vibration absorbing device 3 130; the control module is connected to the first signal acquisition module and the second signal acquisition module; the number of the first signal acquisition modules is N, and the number of the first signal acquisition modules is M; The first signal acquisition modules are: the first vibration sensor 210, the second vibration sensor 220, the third vibration sensor 230 to the Nth vibration sensor 240, N is four, respectively arranged on the cover of the cigarette making machine 20 and the cover of the thread feeder 30, for collecting vibration data of the target vibration source, i.e. the corresponding cover; the second signal acquisition modules are: the first microphone 310, the second microphone 320, the third microphone 330 to the Mth microphone 340, M is four, respectively arranged around the cigarette making machine group, for collecting noise data generated by the target vibration source, i.e. the corresponding cover.

[0032] In fact, the first signal acquisition module and the second signal acquisition module may be set in other quantities and positions as needed. The first signal acquisition module and the second signal acquisition module may communicate with the computer device using a wired communication network or a wireless communication network. This embodiment uses a wireless communication network connection method.

[0033] A vibration signal collector 410 can be set to collect the signal of the first signal acquisition module, and the vibration data of the first signal acquisition module is signal conditioned by the vibration signal collector 410, and then fed back to the control module; a noise signal collector 420 can be set to collect the signal of the second signal acquisition module; the noise data of the second signal acquisition module is signal conditioned by the noise signal collector 420, and then fed back to the control module. After the control module performs time domain and spectrum analysis on the received data, the corresponding excited vibration frequencies of the cover of the cigarette making machine 20 and the cover of the thread feeding machine 30 can be determined; thereby, the required stiffness value of the dynamic vibration absorbing device 100 can be calculated, and the drive control instructions can be generated accordingly.

[0034] In this embodiment, if Figure 3 As shown, the vibration signal collector 410 and the noise signal collector 420 can both use a wireless router with AP function and use a wireless communication network for data transmission. In addition, a local area network composed of two wireless routers with AP function can be bridged and connected, one end of which is also connected to a power vibration absorbing device and the other end is connected to a host computer system of a computer device.

[0035] The computer device used in the control module of this embodiment can analyze the stimulated vibration characteristics of the target vibration source based on the vibration data and the noise data, that is, analyze the stimulated vibration frequency of the cover of the assembler 10, the cover of the cigarette making machine 20, and the cover of the wire feeder 30; and output a drive control instruction according to the stimulated vibration characteristics to control the action of the driver 101 of the power vibration absorbing device 100. The action of the driver 101 can adjust the stiffness of the entire power vibration absorbing device 100. When the stiffness reaches the required stiffness value of the power vibration absorbing device 100, the vibration suppression of the cover of the assembler 10, the cover of the cigarette making machine 20, and the cover of the wire feeder 30 can be achieved.

[0036] In addition, if Figure 2 As shown, for the vibration absorbing object (i.e., any one of the cover of the assembling machine 10, the cover of the cigarette making machine 20, and the cover of the thread feeding machine 30), after vibration suppression, noise test analysis and vibration test analysis can be continuously performed, and it can be determined based on the analysis results whether the adjustment of the dynamic vibration absorbing device 100 reaches the required stiffness value; if not, continue to adjust until the target is reached.

[0037] In this embodiment, closed-loop control of the power vibration absorbing device can be achieved by setting a control module and a first signal acquisition module and a second signal acquisition module; the required stiffness value of the power vibration absorbing device 100 can be adaptively adjusted in real time according to the acquired vibration data and noise data, so as to change the vibration absorption parameters of the power vibration absorbing device 100, so that the power vibration absorbing device 100 can adapt to the vibration and noise changes caused by changes in complex coupling factors such as the equipment working conditions and surrounding environment of the cigarette making unit.

[0038] In this embodiment, the data transmission process can also be optimized according to actual conditions. A filter amplifier is integrated on the first data collector and the second data collector, and the vibration data and noise data are filtered and amplified by the filter amplifier. Such data processing can facilitate efficient and accurate analysis by computer equipment afterwards. Embodiment 3,

[0039] like Figure 5 As shown, in this embodiment, a method for dynamic vibration absorption and noise reduction of industrial equipment is used in the dynamic vibration absorption and noise reduction system of industrial equipment; the method comprises: Acquire vibration data and noise data generated by a target vibration source; Determine a target stiffness parameter of the dynamic vibration absorbing device 100 according to the acquired vibration data and noise data; Controlling the dynamic vibration absorbing device 100 to adjust to a target stiffness parameter, and suppressing vibration of a target vibration source through the dynamic vibration absorbing device 100; The vibration data and noise data obtained after the dynamic vibration absorbing device 100 is adjusted are monitored, and the dynamic vibration absorbing device 100 is closed-loop controlled.

[0040] In this embodiment, when the target vibration source is a device included in a cigarette making machine group, a vibration sensor can be arranged on the cover of the cigarette making machine, the thread feeder and the assembler, and a microphone (or pickup) can be arranged near the cigarette making machine, the thread feeder and the assembler to collect vibration signals and noise signals, thereby obtaining vibration data and noise data; and then the vibration data and noise data are obtained through a wireless router connected to the vibration sensor and the microphone.

[0041] In fact, when collecting vibration signals and noise signals, a noise limit can be set. Only when the noise generated by the cigarette making machine, thread feeder or assembler exceeds the noise limit, the vibration signal and noise signal feedback will be triggered, and the vibration data and noise data will be acquired and transmitted, and then vibration suppression will be performed.

[0042] In this embodiment, the target stiffness parameter of the dynamic vibration absorbing device 100 can be determined by analyzing and processing by a host computer system installed in the computer device.

[0043] In fact, a data analysis model can also be trained to analyze and process data as needed; the method in this embodiment also includes: training the migrated machine learning model through a sample set made from vibration data and noise data to obtain a data analysis model; the data analysis model can determine the target stiffness parameters of the power vibration absorption device based on the acquired noise data and vibration data; thereafter, it is convenient to generate and output a drive control instruction based on the target stiffness parameter, and then execute the drive control instruction through the driver, so that the power vibration absorption device can adaptively change its own vibration parameters, thereby achieving vibration suppression of the cover of the cigarette making machine, thread feeding machine, and assembler, and realizing vibration reduction and noise reduction.

[0044] The above is a detailed introduction to a dynamic vibration absorption device, an industrial equipment dynamic vibration absorption and noise reduction system and method provided by the present invention. The description of the specific embodiment is only used to help understand the method and its core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A dynamic vibration absorbing device, comprising a base and a driver (101) mounted on the base, wherein an output shaft of the driver (101) is connected to a screw rod (103); characterized in that: The screw rod (103) is threadedly connected to a nut seat (104); one side of the base and the nut seat (104) are connected to a mass block (102) via a connecting piece; the other side of the base and the nut seat (104) are also connected to a mass block (102) via a connecting piece; the driver (101) drives the nut seat (104) to move via the screw rod (103) to change the span between the two mass blocks (102).

2. The dynamic vibration absorbing device according to claim 1, characterized in that: The driver is connected to a wireless receiver, and the wireless receiver is used to receive a driving control instruction and send it to a control end of the driver. The control end of the driver executes the driving control instruction to control the operation of the driver.

3. The dynamic vibration absorbing device according to claim 1, characterized in that: The connecting member is an elastic tension and compression rod (105); one end of the screw rod (103) away from the driver (101) is connected to one end of a coupling, and the other end of the coupling is rotatably connected to a target vibration source.

4. An industrial equipment dynamic vibration absorption and noise reduction system, characterized in that: It comprises a control module and a dynamic vibration absorbing device (100) as claimed in any one of claims 1 to 3, wherein the control module is connected to a first signal acquisition module and a second signal acquisition module; At least one of the first signal acquisition modules is disposed at a target vibration source of the industrial equipment, and is used to collect vibration data of the target vibration source; At least one of the second signal acquisition modules is disposed around the industrial equipment and is used to collect noise data generated by the target vibration source; The control module analyzes the excited vibration characteristics of the target vibration source according to the vibration data and the noise data, and outputs a drive control instruction according to the excited vibration characteristics to control the dynamic vibration absorbing device (100) to suppress the vibration of the target vibration source.

5. The industrial equipment dynamic vibration absorption and noise reduction system according to claim 4, characterized in that: The first signal acquisition module includes a first data collector and at least one vibration sensor connected to the first data collector; the second signal acquisition module includes a second data collector and at least one pickup connected to the second data collector.

6. The industrial equipment dynamic vibration absorption and noise reduction system according to claim 5, characterized in that: The first data collector, the second data collector or the control module is connected to a filter amplifier, and the filter amplifier is used to filter and amplify the vibration data and noise data.

7. The industrial equipment dynamic vibration absorption and noise reduction system according to claim 4, characterized in that: The control module comprises at least a control unit and a wireless communication unit, the wireless communication unit being used to construct a wireless communication network to connect the control unit with the first signal acquisition module, the second signal acquisition module and the driver (101) in the dynamic vibration absorbing device (100); the control unit being used to receive and process vibration data and noise data, and to output drive control instructions.

8. A method for dynamic vibration absorption and noise reduction of industrial equipment, used in the dynamic vibration absorption and noise reduction system of industrial equipment as claimed in any one of claims 4 to 7; characterized in that: The method comprises: Acquire vibration data and noise data generated by a target vibration source; Determining a target stiffness parameter of the dynamic vibration absorbing device (100) according to the acquired vibration data and noise data; Controlling the dynamic vibration absorbing device (100) to adjust to the target stiffness parameter, and performing vibration suppression on the target vibration source through the dynamic vibration absorbing device (100); Vibration data and noise data obtained after the dynamic vibration absorbing device (100) is adjusted are monitored, and closed-loop control is performed on the dynamic vibration absorbing device (100).