CN218440372U - Permanent magnet type eddy current damper - Google Patents

Abstract

The utility model discloses a permanent magnet type eddy current damper, which comprises a bottom frame, a main damping structure, an auxiliary damping structure and a controller; the bottom frame includes a bottom plate, and the upper end surface of the bottom plate is fixedly connected with two The vertical plate, the outer side of the connection between the vertical plate and the bottom plate is equipped with a uniformly distributed reinforcement structure; the main damping structure is located at the upper end between the two vertical plates, and its advantage is that it has a height adjustment component and an auxiliary height The adjustment component, through the combined use of the height adjustment component and the auxiliary height adjustment component, can quickly realize the height adjustment of the metal plate, so as to realize the adjustment of the damping strength of the permanent magnet eddy current damper, which meets the special needs of users and is convenient The promotion and use of the product; it has a reinforced structure. Through the existence of the reinforced structure, the connection strength of the chassis can be effectively improved, thereby avoiding the possible deformation of the chassis structure under long-term loads, thereby ensuring the normal service life of the damper.

Description

A permanent magnet eddy current damper

technical field

The utility model relates to the technical field of dampers, in particular to a permanent magnet eddy current damper.

Background technique

The damper is a device that provides resistance to movement and consumes movement energy. Various dampers (or shock absorbers) have been used in aerospace, aviation, military, guns, automobiles and other industries to reduce vibration and reduce vibration. Energy; the main working principle of the permanent magnet eddy current damper is that the movement of the magnet will cause the change of the magnetic flux at different positions on the closed metal plate, thereby forming an eddy current and hindering the movement of the magnet through the diamagnetic field generated by the eddy current, so as to achieve damping Or the purpose of shock absorption, and the change of the magnetic flux is also subject to the constraints of the magnetic field intensity when the area of the closed metal plate is constant, and the size of the magnetic field it is subjected to is related to the distance between the closed metal plate and the magnet. The 201010022003.7 patent announced a permanent magnet eddy current tuned mass damper. During the use of this patent, the position and height of the metal plate cannot be quickly adjusted, and it is difficult to meet the special needs of users. In addition, the damper The underframe structure lacks corresponding reinforcement measures. When the quality of the mass block is large, the underframe structure may be deformed for a long time under load, which will affect the normal service life of the damper. Therefore, we propose a permanent magnet electric damper. Eddy current damper.

Utility model content

The purpose of this utility model is to provide a permanent magnet eddy current damper in order to solve the above problems, which has the advantages of convenient height adjustment of the metal plate of the damper and high strength of the damper chassis. See below for details.

In order to achieve the above object, the utility model provides the following technical solutions:

A permanent magnet eddy current damper provided by the utility model includes a chassis, a main damping structure, an auxiliary damping structure and a controller;

The underframe includes a base plate, and the upper end surface of the base plate is fixedly connected with two left and right opposite vertical plates, and the outside of the connection between the vertical plate and the bottom plate is provided with uniformly distributed reinforcement structures;

The main damping structure is located at the upper end between the two vertical plates;

The auxiliary damping structure is located directly below the main damping structure and is connected to the bottom plate. The auxiliary damping structure includes a lifting seat and a height adjustment assembly. A metal plate is installed in the middle of the lifting seat, and both ends of the metal plate are provided with There are auxiliary height adjustment components distributed symmetrically, and the height adjustment components are fixed on the bottom plate and located directly under the lifting seat;

The controller is fixed on the bottom plate, and the input end of the controller is electrically connected to the output end of the external power supply.

Preferably, the reinforcement structure adopts a right-angle reinforcement rib, one right-angle side of the right-angle reinforcement rib is fixedly connected to the bottom plate, and the other right-angle side of the right-angle reinforcement rib is fixedly connected to the vertical plate, so as to realize the installation of the reinforcement structure , effectively enhance the overall strength and stability of the chassis.

Preferably, the main damping structure includes two front and rear opposite sliding rods, the two ends of the sliding rods are respectively fixedly connected with two vertical plates, and two left and right opposite linear bearing seats are slidably connected to the sliding rods , the outer side of the bearing seat and its adjacent vertical plate are provided with damping springs, the lower end of the linear bearing seat is fixedly connected with the upper end of the mass block, and the lower end of the mass block is fixedly connected with a uniform The distributed magnets ensure the damping function of the damper.

As a preference, the shock absorbing spring is sleeved on the outside of the slide bar, one end of the shock absorbing spring is fixedly connected to the linear bearing seat, and the other end of the shock absorbing spring is fixedly connected to its adjacent vertical plate, which can be externally When the vibration amplitude of the connected structure is small, its shock absorption (damping) operation is realized.

Preferably, the auxiliary height adjustment assembly includes a connecting ear, the inner side of the connecting ear is fixedly connected with the lifting seat, the outer side of the connecting ear is slidably connected with a guide rod, the lower end of the guide rod is fixedly connected with the bottom plate, the The upper end of the guide rod is fixedly connected to the top plate, and the outer side of the guide rod is covered with a return spring to ensure the connection between the auxiliary height adjustment component and the lifting seat, ensure the height adjustment function of the auxiliary height adjustment component, and lay the foundation for the height adjustment of the metal plate.

Preferably, the connecting ear is provided with a mounting hole corresponding to the guide rod, and the guide rod and the mounting hole are installed in cooperation to ensure the cooperative installation of the guide rod and the connecting ear.

Preferably, the upper end of the return spring is fixedly connected to the top plate, and the lower end of the return spring is fixedly connected to the lifting seat, and the return spring is in a compressed state to ensure the installation of the return spring and lay a foundation for the subsequent normal operation of the return spring.

Preferably, the height adjustment component adopts a telescopic cylinder, the input end of the telescopic cylinder is electrically connected to the output end of the controller to ensure the normal operation of the telescopic cylinder, and the height adjustment of the lifting seat is realized through the expansion and contraction of the telescopic cylinder. The height adjustment lays the foundation.

The beneficial effects of the utility model are:

Equipped with height adjustment components and auxiliary height adjustment components, through the combined use of height adjustment components and auxiliary height adjustment components, the height adjustment of the metal plate can be quickly realized, thereby realizing the adjustment of the damping strength of the permanent magnet eddy current damper, satisfying The user's special use needs are convenient for the promotion and use of the product;

With a reinforced structure, the connection strength of the chassis can be effectively improved through the existence of the reinforced structure, so as to avoid possible deformation of the chassis structure under long-term load, thereby ensuring the normal service life of the damper.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the front view of the utility model;

Fig. 2 is the three-dimensional structure schematic diagram of Fig. 1 of the utility model;

Fig. 3 is a schematic cross-sectional structure diagram of the perspective front view of Fig. 1 of the present invention.

The reference signs are explained as follows:

1. Underframe; 11. Bottom plate; 12. Vertical plate; 13. Strengthening structure; 2. Main damping structure; 21. Slider; 22. Linear bearing seat; 23. Damping spring; 24. Mass block; 25. Magnet ; 3, auxiliary damping structure; 31, lifting seat; 32, metal plate; 33, telescopic cylinder; 34, connecting ear; 35, guide rod; 36, top plate; 37, return spring; 4, controller.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other implementations obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

Referring to Figures 1-3, the utility model provides a permanent magnet eddy current damper, including a chassis 1, a main damping structure 2, an auxiliary damping structure 3 and a controller 4; the chassis 1 includes a bottom plate 11, The upper end surface of the bottom plate 11 is fixedly connected with two vertical plates 12 facing left and right, and the outside of the joint between the vertical plates 12 and the bottom plate 11 is provided with evenly distributed reinforcement structures 13, and the reinforcement structures 13 adopt right-angled reinforcement ribs, and right-angle reinforcement ribs One right-angled side of the right-angled rib is fixedly connected to the bottom plate 11, and the other right-angled side of the right-angled reinforced rib is fixedly connected to the vertical plate 12, so as to realize the installation of the reinforced structure 13 and effectively strengthen the overall strength and stability of the bottom frame 1; the main damping structure 2 is located at At the upper end between the two vertical plates 12, the main damping structure 2 includes two sliding rods 21 opposite to each other. The two ends of the sliding rods 21 are fixedly connected to the two vertical plates 12 respectively. A left and right relative linear bearing seat 22, the outer side of bearing seat 22 and its adjacent vertical plate 12 are all provided with damping spring 23, and damping spring 23 is enclosed within the outer side of slide bar 21, and one end of damping spring 23 It is fixedly connected with the linear bearing seat 22, and the other end of the shock-absorbing spring 23 is fixedly connected with its adjacent vertical plate 12, so that when the vibration amplitude of the external connection structure is small, the shock-absorbing (damping) operation can be realized. The linear bearing seat The lower end of 22 is fixedly connected with the upper end of mass block 24, and the lower end of mass block 24 is fixedly connected with evenly distributed magnets 25 to ensure the damping function of the damper; the auxiliary damping structure 3 is located directly below the main damping structure 2 and Connected to the bottom plate 11, the auxiliary damping structure 3 includes a lifting seat 31 and a height adjustment assembly. A metal plate 32 is installed in the middle of the lifting seat 31. Both ends of the metal plate 32 are provided with symmetrically distributed auxiliary height adjustment assemblies. The auxiliary height adjustment assembly Including the connecting ear 34, the inner side of the connecting ear 34 is fixedly connected with the lifting seat 31, the outer side of the connecting ear 34 is slidingly connected with a guide rod 35, the connecting ear 34 is provided with a mounting hole corresponding to the guide rod 35, the guide rod 35 and the mounting hole Cooperate installation, guarantee the cooperative installation of guide rod 35 and connecting ear 34, the lower end of guide rod 35 is fixedly connected with bottom plate 11, the upper end of guide rod 35 is fixedly connected with top plate 36, and the outer side of guide rod 35 is covered with return spring 37, ensures auxiliary The connection between the height adjustment assembly and the lifting seat 31 ensures the height adjustment function of the auxiliary height adjustment assembly, and lays the foundation for the height adjustment of the metal plate 32. Fixed connection, return spring 37 is in compressed state, guarantees the installation of return spring 37, lays the foundation for the follow-up normal work of return spring 37, height adjustment component is fixed on the bottom plate 11 and is positioned at the bottom of lift seat 31, and height adjustment component adopts telescopic Cylinder 33, the input end of telescopic cylinder 33 is electrically connected to the output end of controller 4, guarantees the normal operation of telescopic cylinder 33, realizes the height adjustment of lifting seat 31 by the expansion and contraction of telescopic cylinder 33, and then the height adjustment of metal plate 32 lays the foundation; Controller 4 is fixed on the bottom On the board 11, the input terminal of the controller 4 is electrically connected to the output terminal of the external power supply.

In one embodiment of the present invention, the permanent magnet eddy current damper with the above-mentioned structure is adopted. Firstly, the mass block 24 will be connected with the external structure to be damped. When the vibration amplitude of the external structure is small, the mass block 24 will not Move, and the damping spring 23 in the damper can dampen the vibration, and when the vibration amplitude of the external structure is large, the mass block 24 will move and in this process, the damping spring 23 can initially balance the mass The movement of the block 24 is damped and buffered, and the mass block 24 moves, the magnet 25 at the lower end of the mass block 24 will move, the movement of the magnet 25 will cause the magnetic field around the metal plate 32 to change, and then cause the magnetic flux to change, so that the metal plate produces induction The electromotive force finally forms an eddy current, and the eddy current will form a reverse magnetic field to hinder the movement of the magnet 25, thereby completing the permanent magnet eddy current damping of the mass block 24; the damping force generated by the eddy current damping and the eddy current generated Therefore, it is also related to the distance between the metal plate 32 and the magnet 25; under normal circumstances, due to the stretching force of the return spring 37, the connecting ear 34 will move downward, and then drive the lifting seat 31 to move downward. Therefore, the lower end of the lifting seat 31 will be in contact with the top of the telescopic cylinder 33, and the telescopic cylinder 33 is controlled by the controller 4 to work, and the telescopic cylinder 33 is stretched, which can cause the height of the lifting seat 31 to change, thereby realizing the height adjustment operation of the metal plate 32 .

It is worth noting that the controller 4 controls the operation of the telescopic cylinder 33 using the prior art;

The fixed connection in the utility model adopts the connection mode of welding or screw connection;

The damping springs 23 in the utility model are initially in a balanced state, so that when the counterweight performs damping work, the two damping springs 23 can perform damping and shock absorbing work.

The permanent magnet eddy current damper of this embodiment has the following advantages:

Equipped with a height adjustment component and an auxiliary height adjustment component, through the combined use of the height adjustment component and the auxiliary height adjustment component, the height adjustment of the metal plate 32 can be quickly realized, thereby realizing the adjustment of the damping strength of the permanent magnet eddy current damper, Meet the special needs of users and facilitate the promotion and use of products;

With the reinforcement structure 13, the connection strength of the chassis 1 can be effectively improved through the existence of the reinforcement structure 13, so as to avoid possible deformation of the chassis structure under long-term load, thereby ensuring the normal service life of the damper.

The above are only specific embodiments of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present utility model. All should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (8)

1. A permanent magnet eddy current damper is characterized in that: comprises a chassis (1), a main damping structure (2), an auxiliary damping structure (3) and a controller (4);

the chassis (1) comprises a bottom plate (11), the upper end face of the bottom plate (11) is fixedly connected with two vertical plates (12) which are opposite left and right, and reinforcing structures (13) which are uniformly distributed are arranged on the outer sides of the joints of the vertical plates (12) and the bottom plate (11);

the main damping structure (2) is positioned at the upper end between the two vertical plates (12);

the auxiliary damping structure (3) is located right below the main damping structure (2) and connected with the bottom plate (11), the auxiliary damping structure (3) comprises a lifting seat (31) and height adjusting assemblies, a metal plate (32) is mounted in the middle of the lifting seat (31), the two ends of the metal plate (32) are respectively provided with the auxiliary height adjusting assemblies which are symmetrically distributed, and the height adjusting assemblies are fixed on the bottom plate (11) and located right below the lifting seat (31);

the controller (4) is fixed on the bottom plate (11), and the input end of the controller (4) is electrically connected with the output end of an external power supply.

2. A permanent magnet eddy current damper according to claim 1, wherein: the reinforcing structure (13) adopts a right-angle reinforcing rib plate, one right-angle side of the right-angle reinforcing rib plate is fixedly connected with the bottom plate (11), and the other right-angle side of the right-angle reinforcing rib plate is fixedly connected with the vertical plate (12).

3. A permanent magnet eddy current damper according to claim 1, wherein: the main damping structure (2) comprises two front and rear opposite sliding rods (21), two ends of each sliding rod (21) are fixedly connected with two vertical plates (12) respectively, two left and right opposite linear bearing seats (22) are connected to each sliding rod (21) in a sliding mode, damping springs (23) are arranged between the outer sides of the linear bearing seats (22) and the adjacent vertical plates (12), the lower ends of the linear bearing seats (22) are fixedly connected with the upper ends of the mass blocks (24), and magnets (25) which are uniformly distributed are fixedly connected to the lower ends of the mass blocks (24).

4. A permanent magnet eddy current damper according to claim 3, characterized in that: the damping spring (23) is sleeved on the outer side of the sliding rod (21), one end of the damping spring (23) is fixedly connected with the linear bearing seat (22), and the other end of the damping spring (23) is fixedly connected with the adjacent vertical plate (12).

5. A permanent magnet eddy current damper according to claim 1, wherein: supplementary altitude mixture control subassembly includes engaging lug (34), inboard and lift seat (31) fixed connection of engaging lug (34), the outside sliding connection of engaging lug (34) has guide bar (35), the lower extreme and bottom plate (11) fixed connection of guide bar (35), the upper end and roof (36) fixed connection of guide bar (35), the outside cover of guide bar (35) has reset spring (37).

6. A permanent magnet eddy current damper according to claim 5, characterized in that: the connecting lug (34) is provided with a mounting hole corresponding to the guide rod (35), and the guide rod (35) is mounted in a matching way with the mounting hole.

7. A permanent magnet eddy current damper as claimed in claim 6, wherein: the upper end of the return spring (37) is fixedly connected with the top plate (36), the lower end of the return spring (37) is fixedly connected with the lifting seat (31), and the return spring (37) is in a compressed state.

8. A permanent magnet eddy current damper according to claim 1, wherein: the height adjusting assembly adopts a telescopic cylinder (33), and the input end of the telescopic cylinder (33) is electrically connected with the output end of the controller (4).

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