Monitoring-integrated magnetic self-resetting damper
Through the design of magnetic self-reset dampers, the combination of permanent magnets and electromagnets is used to achieve flexible adjustment of self-reset and energy consumption, solving the problems of easy damage and unstable energy consumption of existing dampers in resetting materials, and providing uniform stress and efficient energy consumption effects.
Patent Information
- Application Number
- CN202422172391.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-05
AI Technical Summary
In the self-resetting system, the existing self-resetting dampers have problems such as prestressed ribs, severe degradation in the performance of disc spring materials and high cost of SMA materials; in terms of energy consumption, friction energy-consuming dampers cannot effectively consume energy when the pressure is too high or too small, and metal yield energy-consuming materials lose their function after yield.
The non-contact force transmission method of a combination of permanent magnets and electromagnets is adopted to adjust the energy consumption capacity through a magnetic adjustment circuit, and combine the design of permanent magnets and electromagnets with friction blocks to achieve self-resetting of magnetic force and energy consumption adjustment.
It avoids the performance degradation of reset materials due to fatigue and other factors, reduces costs, and can flexibly adjust the energy consumption capacity, avoids insufficient or excessive energy consumption of traditional dampers when the pressure is inadequate, and provides uniform stress and effective energy consumption.
Smart Images
Figure CN223063010U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dampers, in particular to a magnetically self-resetting damper integrated with monitoring. Background Art
[0002] The main function of a damper is to provide resistance to motion and dissipate motion energy. They are widely used in various devices and systems to reduce the effects of vibration and shock. As energy-consuming and resetting components, self-resetting dampers are installed on structures to achieve the recoverability of structural functions and reduce the cost of maintenance or reconstruction.
[0003] Existing self-resetting dampers mostly adopt prestressed steel bars, disc springs, SMA materials, etc. in the self-resetting system, and they all have certain defects:
[0004] The anchorage end of the prestressed steel bars is prone to damage, resulting in the damage of the damper;
[0005] The performance of disc spring reset materials degrades severely after material yield;
[0006] The cost of SMA materials is high, making it difficult to promote on a large scale.
[0007] Existing self-resetting dampers mostly adopt friction energy dissipation, viscous damping energy dissipation, spring energy dissipation, metal yield energy dissipation, etc. in terms of energy consumption, and their defects are as follows:
[0008] For a passive friction energy dissipation damper, if the applied pressure is too large, resulting in too large frictional force, it cannot slide under small disturbances, causing the energy dissipation system to only provide stiffness and not have the ability to dissipate energy. If the applied pressure is too small, the sliding friction is too small, and it cannot provide effective energy dissipation in the face of large disturbances;
[0009] Metal yield energy dissipation can no longer provide working ability after the energy dissipation material yields. Content of the Utility Model
[0010] The purpose of the utility model is to provide a magnetically self-resetting damper integrated with monitoring, aiming to solve or improve at least one of the above technical problems.
[0011] To achieve the above purpose, the utility model provides the following solution: The utility model provides a magnetically self-resetting damper integrated with monitoring, including:
[0012] A housing;
[0013] A pair of transmission shafts coaxially arranged in the housing, on which a plurality of permanent magnets are slidably fitted, and the adjacent permanent magnets repel each other. A pair of first limit blocks are fixedly connected to the transmission shafts, and the pair of first limit blocks are respectively located on both sides of the plurality of permanent magnets for abutting against the permanent magnets;
[0014] A pair of electromagnets are horizontally arranged inside the housing. A pair of friction blocks are abutted between the pair of electromagnets. One end of each of the pair of friction blocks close to the pair of transmission shafts is fixedly connected one by one. A magnetic force adjustment circuit is arranged on the electromagnet.
[0015] Optionally, the magnetic force adjustment circuit includes a coil wound around the electromagnet, a sliding rheostat and a visualization device connected to the coil.
[0016] Optionally, the visualization device includes a force sensor and a displacement sensor.
[0017] Optionally, openings for the transmission shafts to extend out are respectively formed at both ends of the housing.
[0018] Optionally, a pair of second limit blocks are arranged inside the housing to form a limit groove, and the pair of electromagnets are arranged in the limit groove.
[0019] Optionally, the pair of electromagnets are symmetrically arranged on both sides of the transmission shaft.
[0020] Optionally, the pair of friction blocks are symmetrically arranged relative to the longitudinal center of the electromagnet.
[0021] Optionally, a groove with an inclined surface is formed on the end face of the electromagnet close to the friction block, and the inner wall of the groove abuts against the friction block.
[0022] The present utility model discloses the following technical effects:
[0023] By arranging a plurality of permanent magnets on the transmission shaft and making the adjacent two permanent magnets repel each other, using magnetic force as the source of energy dissipation and reset ability, and adopting a non-contact force transmission method, the performance degradation caused by factors such as fatigue of most reset materials is avoided, and its cost is extremely low compared with SMA materials. At the same time, there is no need to consider the failure modes such as yield fracture of contact-type reset materials.
[0024] By using a pair of electromagnets in cooperation with the friction blocks, the magnitude of the energy dissipation ability can be flexibly adjusted through the magnetic force adjustment circuit 7, thus avoiding the embarrassing situation that in a traditional friction energy dissipation type damper, if the applied pressure is too large, the frictional force is too large and it cannot slide under small disturbances, resulting in the energy dissipation system only providing stiffness and not having the energy dissipation ability, and if the applied pressure is too small, the sliding friction is too small and it cannot provide effective energy dissipation in the face of large disturbances. Description of the Drawings
[0025] The drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:
[0026] Figure 1 This is the front cross-sectional view of the present utility model;
[0027] Figure 2 This is the side view of the present utility model.
[0028] In the figure: 1. Outer shell; 2. Transmission shaft; 3. Permanent magnet; 4. First limit block; 5. Electromagnet; 6. Friction block; 7. Magnetic force adjustment circuit; 71. Coil; 72. Slide rheostat; 73. Visualization device; 8. Opening; 9. Second limit block; 10. Groove. Specific embodiments
[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0030] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0031] Refer to Figure 1 - Figure 2 , the present utility model provides a magnetically self-resetting damper with integrated monitoring, including:
[0032] Outer shell 1;
[0033] A pair of transmission shafts 2 are coaxially arranged in the outer shell 1. A plurality of permanent magnets 3 are slidably fitted on the transmission shaft 2, and adjacent two permanent magnets 3 repel each other. A pair of first limit blocks 4 are fixedly connected to the transmission shaft 2, and the pair of first limit blocks 4 are respectively located on both sides of the plurality of permanent magnets 3 for abutting against the permanent magnets 3;
[0034] A pair of electromagnets 5 are horizontally arranged in the outer shell 1. A pair of friction blocks 6 are abutted between the pair of electromagnets 5. The pair of friction blocks 6 are respectively fixedly connected to one end of the pair of transmission shafts 2 close to each other. A magnetic force adjustment circuit 7 is arranged on the electromagnet 5.
[0035] By arranging a plurality of permanent magnets 3 on the transmission shaft 2 and making adjacent two permanent magnets 3 repel each other, using magnetic force as the source of energy consumption and reset ability, and adopting a non-contact force transmission method, it avoids the performance degradation caused by factors such as fatigue of most reset materials, and its cost is extremely low compared with SMA materials. At the same time, there is no need to consider the failure modes such as yield fracture of contact-type reset materials.
[0036] By adopting a pair of electromagnets 5 in cooperation with the friction blocks 6, the magnetic force adjustment circuit 7 can flexibly adjust the magnitude of the energy consumption capacity, thus avoiding the embarrassing situation of traditional friction energy-consuming dampers. If the applied pressure is too large, the frictional force will be too large and it cannot slide under small disturbances, resulting in the energy-consuming system only providing stiffness and not having the energy consumption capacity. If the applied pressure is too small, the sliding friction will be too small and it cannot provide effective energy consumption in the face of large disturbances.
[0037] Further, the permanent magnet 3 is preferably neodymium iron boron, samarium cobalt, aluminum nickel cobalt, etc.
[0038] In a further optimized solution, the magnetic force adjustment circuit 7 includes a coil 71 wound around the electromagnet 5, a sliding rheostat 72 and a visualization device 73 connected to the coil 71; the visualization device 73 includes a force sensor and a displacement sensor.
[0039] The coil 71 is wound around the electromagnet 5 but does not contact the electromagnet 5, leaving a certain gap for the magnet to move.
[0040] The sliding rheostat 72 adjusts the magnitude of the current in the circuit. According to the principle of electromagnetic induction, the greater the current, the stronger the magnetic field and the greater the magnetic force.
[0041] The force sensor and the displacement sensor can judge whether the magnetic force can meet the energy consumption requirements according to factors such as the magnitude of the current in the circuit and the distance between the two electromagnets 5, so as to provide a reference for current adjustment.
[0042] Further, the magnitude of the magnetic force can also be adjusted by adjusting the number of turns of the coil 71 connected to the circuit.
[0043] In a further optimized solution, openings 8 for the transmission shaft 2 to extend out are respectively provided at both ends of the housing 1, and the size of the opening 8 is larger than the size of the first limiting block 4.
[0044] In a further optimized solution, a pair of second limiting blocks 9 are arranged in the housing 1 to form a limiting groove. A pair of the electromagnets 5 are arranged in the limiting groove, so that the electromagnets 5 can only move in the normal direction of the housing 1. Through holes for the transmission shaft 2 to penetrate are provided on the second limiting blocks.
[0045] In a further optimized solution, a pair of electromagnets 5 are symmetrically arranged along both sides of the transmission shaft 2; a pair of friction blocks 6 are symmetrically arranged along the longitudinal center of the electromagnets 5.
[0046] The transmission shaft 2, multiple permanent magnets 3 and the electromagnets in the housing 1 are completely symmetrically arranged, which can effectively avoid sudden damage caused by accidental factors and make the force evenly distributed along the entire section of the damper.
[0047] In a further optimized solution, a groove 10 with an inclined surface is provided on the end face of the electromagnet 5 close to the friction block 6, and the inner wall of the groove 10 abuts against the friction block 6.
[0048] The groove 10 is specifically triangular, and the friction block 6 is adapted to the structure of the corresponding upper and lower grooves 10.
[0049] Working principle: A pair of transmission shafts 2 and the outer shell 1 form the guiding part of the self-resetting damper. The outer shell 1 is a cuboid with openings at both ends and is hollow in the middle. A pair of first limiting blocks 4 are welded on the transmission shaft 2 to compress the distance between multiple permanent magnets 3 on the transmission shaft 2 to obtain the reset ability. The multiple permanent magnets 3 are the reset part of the self-resetting damper, providing a reset force when the distance is compressed. A hole is opened in the middle of the permanent magnet 3 and it is sleeved on the smooth transmission shaft 2 and can slide freely. The diameter of the first limiting block 4 is smaller than the openings 8 at both ends of the outer shell 1, so it can move freely in the outer shell 1. Friction blocks 6 are welded to the ends of the pair of transmission shafts 2 close to each other. There is a group of electromagnets 5 between two second limiting blocks 9 in the outer shell 1. The surface of the groove 10 is in close fit with the cross-section of the friction block 6, consuming energy through friction when the transmission shaft 2 moves left and right. There is a magnetic force adjustment circuit 7 on the electromagnet 5. The coil 71 is wound around the electromagnet 5. A power supply, a switch, a sliding rheostat 72, and a visualization device 73 are connected in series in the circuit. The electromagnet 5 and the friction block 6 form the energy-consuming part of the self-resetting damper. By controlling the number of turns of the coil 71 or the magnitude of the current connected to the circuit, the magnetic force of the electromagnet 5 can be controlled, thereby controlling the magnitude of the frictional force and adjusting the energy-consuming ability.
[0050] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
[0051] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.
Claims
1. An integrated monitoring magnetic self-resetting damper, characterized in that, Comprising: A housing (1); A pair of transmission shafts (2), coaxially arranged within the housing (1), with a number of permanent magnets (3) slidably fitted on the transmission shafts (2), and adjacent two of the permanent magnets (3) repelling each other. A pair of first limit blocks (4) are fixedly connected to the transmission shafts (2), and the pair of first limit blocks (4) are respectively located on both sides of the number of permanent magnets (3) for abutting against the permanent magnets (3); A pair of electromagnets (5), horizontally arranged within the housing (1), with a pair of friction blocks (6) abutted between the pair of electromagnets (5). The pair of friction blocks (6) are respectively fixedly connected to one end of the pair of transmission shafts (2) close to each other. A magnetic force adjustment circuit (7) is provided on the electromagnet (5).
2. The integrated monitoring magnetic self-resetting damper according to claim 1, wherein: The magnetic force adjustment circuit (7) includes a coil (71) wound around the electromagnet (5), as well as a sliding rheostat (72) and a visualization device (73) connected to the coil (71).
3. The integrated monitoring magnetic self-resetting damper according to claim 2, wherein: The visualization device (73) includes a force sensor and a displacement sensor.
4. The integrated magnetic self-resetting damper according to claim 1, wherein: Openings (8) for the transmission shafts (2) to extend out are respectively formed at both ends of the housing (1).
5. The integrated magnetic self-resetting damper according to claim 1, wherein: A pair of second limit blocks (9) are arranged within the housing (1) to form a limit groove, and the pair of electromagnets (5) are arranged within the limit groove.
6. The integrated monitoring magnetic self - reset damper according to claim 1, characterized in that: The pair of electromagnets (5) are symmetrically arranged along both sides of the transmission shaft (2).
7. The integrated monitoring magnetic self-resetting damper according to claim 1, characterized in that: The pair of friction blocks (6) are symmetrically arranged along the longitudinal center of the electromagnet (5).
8. The integrated monitoring magnetic self-resetting damper according to claim 1, characterized in that: A groove (10) with an inclined surface is formed on the end face of the electromagnet (5) close to the friction block (6), and the inner wall of the groove (10) abuts against the friction block (6).