Multifunctional hybrid dynamic vibration absorption device
By combining magnetic damping and electromagnetic force, a hybrid dynamic vibration absorber with a cantilever beam structure and a magnetic adjustment system is developed to solve the problem of poor robustness of traditional passive dynamic vibration absorbers and achieve effective vibration suppression and active control in multiple frequency ranges.
Patent Information
- Application Number
- CN202422690154.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-04
AI Technical Summary
Traditional passive dynamic vibration absorbers have poor robustness, a narrow operating frequency range, and a complex adjustment process.
An adjustable passive dynamic vibration absorber structure is adopted, combined with magnetic damping and electromagnetic force to achieve the mixed use of active and passive adjustment. The combination of cantilever beam structure and magnetic adjustment system provides a simple structure and good robustness.
It achieves effective vibration suppression in a variety of frequency ranges, has active control functions, wide adaptability, fine frequency modulation, and is not affected by temperature changes.
Smart Images
Figure CN223424524U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a vibration reduction and noise reduction device, in particular to a multifunctional hybrid power vibration absorber used for suppressing vibration of vibrating equipment. Background Art
[0002] Dynamic vibration absorbers, also known as dynamic dampers, are primarily composed of mass, springs, and a damping system. Commonly used dynamic vibration absorbers can be divided into undamped and damped dynamic vibration absorbers. For single-frequency line spectra, the use of undamped dynamic vibration absorbers often produces very significant results. By installing an undamped dynamic vibration absorber with a natural frequency identical to the single-frequency line spectrum, the oscillator of the dynamic vibration absorber resonates, thereby removing the vibration energy of the main vibration system and reducing the transmission of the equipment's characteristic vibration line spectrum to the outside world. For multi-frequency line spectra, the use of damped dynamic vibration absorbers can achieve better excitation effects. Through optimization design calculations, the optimal design parameters of the dynamic vibration absorber can be obtained. Depending on whether there is external power input, dynamic vibration absorbers can be divided into passive dynamic vibration absorbers and active dynamic vibration absorbers. Passive vibration absorbers have no external energy input, simple structure, and easy maintenance, but have the problem of insufficient robustness. Active vibration absorbers use sensors to detect vibration and are provided with energy from the outside, which can well compensate for the inherent lack of robustness of dynamic vibration absorbers. However, traditional active vibration absorbers usually have complex structures. Summary of the Invention
[0003] The utility model proposes a multifunctional hybrid dynamic vibration absorber, which aims to solve the shortcomings of traditional passive dynamic vibration absorbers, such as poor robustness (narrow operating frequency range) and complicated adjustment process. It adopts an adjustable passive dynamic vibration absorber structure, combined with magnetic damping and electromagnetic force, to achieve the mixed use of active and passive adjustment, with a relatively simple structure, good robustness and outstanding vibration absorption effect.
[0004] To achieve the above objectives, the present invention provides a multifunctional hybrid dynamic vibration absorber comprising a spring-mass system, a magnetic adjustment system, and a passive dynamic vibration absorber. The passive dynamic vibration absorber utilizes a cantilever beam structure, on which the spring-mass system and magnetic adjustment system are mounted.
[0005] Furthermore, the passive dynamic vibration absorber part is composed of a basic mass block, an adjustment mass block, an elastic rod, and an adjustment screw. The elastic rod penetrates the middle through hole of the basic mass block to form a spring mass system.
[0006] Furthermore, an adjusting screw is installed in the middle of the basic mass block, one section of the adjusting screw is fixed on the elastic rod, and the position of the basic mass block can be adjusted by rotating the adjusting screw.
[0007] Furthermore, an adjustment mass block is added to the basic mass block to form a combined mass block, thereby achieving mass adjustment.
[0008] Furthermore, the magnetic regulation system consists of a magnetic circuit mass block, a drive winding, and a permanent magnet. The drive winding is installed on a mounting plate extending from the elastic rod; the permanent magnet is installed on the magnetic circuit mass block, and the magnetic circuit mass block is installed on the basic mass block.
[0009] Furthermore, the drive winding is composed of a metal cylinder structure and an external winding.
[0010] The utility model has the following beneficial effects:
[0011] (1) An adjustment mass block can be added to the basic mass block to achieve mass adjustment.
[0012] The elastic rod adopts a cantilever beam structure, and the main mass can be adjusted by adjusting the screw to achieve fine adjustment of the stiffness.
[0013] (2) It has an independent magnetic force regulation system consisting of a magnetic circuit mass block, a drive winding and a permanent magnet. When current is passed through the system, it will generate electromagnetic force in the vibration direction, and active control can be achieved by cooperating with sensors and control systems.
[0014] (3) When the dynamic vibration absorber is working, the vibration causes the mass to move up and down. The magnetic adjustment system generates an electromagnetic damping force in the opposite direction of the movement. This damping force has good linear performance and is not affected by temperature changes. It can meet various functional requirements and can switch between active and passive vibration absorbers.
[0015] In summary, the utility model has the characteristics of wide adaptability, fine frequency adjustment, and active control function, and can effectively suppress the line spectrum vibration of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic structural diagram of the hybrid dynamic vibration absorber of the utility model;
[0017] Figure 2 It is a schematic diagram of the magnetic regulation system;
[0018] In the figure: 1-basic mass block; 2-adjustment mass block; 3-elastic rod; 4-adjustment screw; 5-magnetic circuit mass block; 6-driving winding; 7-permanent magnet; 8-metal cylinder. DETAILED DESCRIPTION
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] like Figure 1,2, the utility model discloses a kind of multifunctional hybrid power vibration absorber, including base mass 1, adjusting mass 2, elastic rod 3, adjusting screw rod 4, magnetic circuit mass 5, driving winding 6, permanent magnet 7.
[0021] Base mass 1 has through hole in middle, elastic rod 3 can be worn into it, form spring mass system;Base mass 1 is equipped with adjusting screw rod 4 in middle, adjusting screw rod 4 is fixed on elastic rod 3, the adjustment of base mass 1 position can be realized by rotating adjusting screw rod 4;Driving winding 6 is by metal cylinder 8 structure and external winding, is installed on the mounting plate that elastic rod 3 extends out;Permanent magnet 7 is installed on magnetic circuit mass 5, magnetic circuit mass 5 is installed on base mass 1.
[0022] Wherein: base mass 1, adjusting mass 2, elastic rod 3, adjusting screw rod 4 form passive power vibration absorber part, this part uses cantilever beam structure, stiffness and mass are all using adjustable structure, can adapt to multiple working environments.
[0023] Whole mass uses the combination form of base mass 1 plus adjusting mass 2, to realize mass adjustment, satisfy mass adjustment demand.
[0024] Base mass 1 is equipped with adjusting screw rod 4 in middle, can be used for adjusting the position of adjusting mass 2 on elastic rod 3, thereby realize stiffness adjustment.
[0025] Wherein: magnetic circuit mass 5, driving winding 6, permanent magnet 7 form magnetic force adjustment system, as shown in Figure 2 The magnetic force adjustment system can provide linear damping force under the working state of power system, can realize damping design well;Under energized state, cooperate sensor and control system, can provide stable electromagnetic force, realize active control effect.
Claims
1. A multifunctional hybrid power vibration absorbing device, characterized by: It includes a spring mass system, a magnetic adjustment system, and a passive dynamic vibration absorber part. The passive dynamic vibration absorber part adopts a cantilever beam structure, and the spring mass system and the magnetic adjustment system are installed on the cantilever beam structure.
2. The multifunctional hybrid power vibration absorbing device according to claim 1, characterized in that: The passive dynamic vibration absorber part consists of a basic mass block, an adjustment mass block, an elastic rod, and an adjustment screw. The elastic rod penetrates the middle through hole of the basic mass block to form a spring mass system.
3. The multifunctional hybrid power vibration absorbing device according to claim 2, characterized in that: An adjusting screw is installed in the middle of the basic mass block, one end of the adjusting screw is fixed on the elastic rod, and the position of the basic mass block can be adjusted by rotating the adjusting screw.
4. The multifunctional hybrid power vibration absorbing device according to claim 2, characterized in that: An adjustment mass block is added to the basic mass block to form a combined mass block, thereby achieving mass adjustment.
5. The multifunctional hybrid power vibration absorbing device according to claim 1, characterized in that: The magnetic regulation system consists of a magnetic circuit mass block, a drive winding, and a permanent magnet. The drive winding is installed on a mounting plate extending from an elastic rod; the permanent magnet is installed on the magnetic circuit mass block, and the magnetic circuit mass block is installed on the basic mass block.
6. The multifunctional hybrid power vibration absorbing device according to claim 5, characterized in that: The drive winding consists of a metal cylinder structure and external windings.