Axial friction energy dissipation device with adjustable damping

Abstract

The utility model discloses a damping-adjustable axial friction energy dissipation device which comprises an outer steel plate, a friction plate, a middle plate and an adjusting magnet. A U-shaped groove is formed in one surface of the outer steel plate, and a round hole for mounting is formed in one end; grooves are formed in the two faces of the middle plate, and a round hole for installation is formed in one end of the middle plate. The friction plate is consistent with the middle plate groove in shape and size, and the thickness is greater than the depth of the middle plate groove; the two friction plates are symmetrically embedded into the grooves in the two faces of the middle plate to be fixed. The two outer steel plates are symmetrically arranged on the two sides of the middle plate, and the middle plate is embedded into the U-shaped grooves of the outer steel plates and can slide along the U-shaped grooves. The adjusting magnets are tightly attracted to the outer sides of the two outer steel plates, and the outer steel plates, the friction plates and the middle plate are connected together through magnetic force. The friction damping device is convenient to install, stable in friction damping, convenient to adjust damping operation, high in precision and small in error.

Description

Technical Field

[0001] The utility model relates to the field of construction engineering, in particular to an axial friction energy dissipator with adjustable damping. Background Art

[0002] Friction energy absorbers are widely used in building energy dissipation and shock absorption as a highly efficient energy dissipation shock absorption device. Traditional axial friction energy absorbers are connected by bolts to fasten steel plates and friction plates. The pressure between the steel plates and friction plates is adjusted by adjusting the bolt tightening torque to adjust the friction damping. In actual use, the friction plate will wear and thin as the energy is consumed, the pressure between the steel plates and friction plates will decrease, the friction damping of the energy absorber will decrease, and the energy consumption efficiency will decrease. In addition, the damping adjustment by bolt tightening torque is cumbersome, low in precision, and has large errors. Utility Model Content

[0003] In view of the above problems, the utility model provides an axial friction energy dissipator with adjustable damping, which ensures that the friction damping is not lost after the friction material is worn, and the damping adjustment operation is convenient, high in precision and small in error.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a damping adjustable axial friction energy absorber includes: an outer steel plate, a friction plate, an intermediate plate, and an adjustment magnet. The outer steel plate is provided with a U-shaped groove on one side and a circular hole for installation on one end; the intermediate plate is provided with grooves on both sides and a circular hole for installation on one end; the shape and size of the friction plate are consistent with the groove of the intermediate plate; the friction plate is provided with two pieces, symmetrically embedded in the grooves on both sides of the intermediate plate for fixing; the outer steel plate is also provided with two pieces, symmetrically placed on both sides of the intermediate plate, and the intermediate plate is embedded in the U-shaped groove of the outer steel plate and can slide along the U-shaped groove; the adjustment magnet is tightly adsorbed on the outside of the two outer steel plates, and the outer steel plates, friction plates, and intermediate plates are connected together by magnetic force.

[0005] Preferably, the friction plate thickness is greater than the intermediate plate groove depth;

[0006] Preferably, the depth of the U-shaped groove of the outer steel plate is less than half of the total thickness of the middle plate after being embedded in the friction plate, and greater than the exposed thickness of the friction plate after being embedded in the groove of the middle plate;

[0007] Preferably, the width of the U-shaped groove of the outer steel plate is equal to the width of the middle plate;

[0008] Preferably, the shape of the groove of the middle plate can be square, circular or triangular, etc.;

[0009] Preferably, the adjusting magnet is square, and the magnetic flux direction is perpendicular to the large surface of the magnet;

[0010] Preferably, the adjustment magnets are closely arranged on the outer steel plate, and friction damping adjustment is achieved by adjusting the number of magnets;

[0011] Preferably, the magnets can be selected to have the same magnetic field strength or to be mixed with different magnetic field strengths to achieve the function of precise adjustment of friction damping;

[0012] The beneficial effects of the utility model are:

[0013] First, the utility model is easy to assemble and disassemble, and can be assembled and disassembled without using any installation tools, which is convenient for later adjustment, maintenance and replacement.

[0014] Second, the utility model utilizes the magnetic force between the magnet and the iron to generate positive pressure between the outer steel plate and the friction plate to achieve friction damping. The magnetic force is almost unaffected by the wear of the friction plate, thus effectively avoiding the attenuation of the friction damping after the wear of the friction plate.

[0015] Third, the utility model can accurately adjust the friction damping by adjusting the number of magnets, the magnetic field strength of the magnets, the arrangement method, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the explosion of the structure of the utility model;

[0018] Figure 3 A cross-sectional schematic diagram of the utility model

[0019] Figure 4 This is a schematic diagram for adjusting the magnet installation;

[0020] In the figure, 1-outer steel plate, 2-friction plate, 3-middle plate, 4-adjusting magnet. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0022] Embodiment: A damping adjustable axial friction absorber, such as Figure 1-3 As shown, it includes: an outer steel plate, a friction plate, an intermediate plate, and an adjusting magnet;

[0023] The outer steel plate and one end of the middle plate are provided with circular holes for installation, which can be installed on the building structure by pins, and both sides of the middle plate are provided with square or other shaped grooves;

[0024] There are two friction plates, the shape and size of which are consistent with the groove of the middle plate, and they are respectively embedded and fixed on the two sides of the middle plate;

[0025] There are two outer steel plates, one side of which is provided with a U-shaped groove, the width of which is consistent with the width of the middle plate, and the two outer steel plates symmetrically clamp the middle plate and the friction plate;

[0026] The adjusting magnets are closely arranged on the outer side of the outer steel plate, and the outer steel plate, the friction plate and the middle plate are integrated into an integral structure through magnetic force.

[0027] Working principle: After the outer side of the outer steel plate of the utility model adsorbs the magnet, it is magnetized by the magnet, and a magnetic force is generated between the outer steel plate and the middle plate, so that the outer steel plate is pressed against the friction plate installed in the groove of the middle plate with a certain pressure. When the building structure experiences an earthquake or wind vibration, the outer steel plate and the middle plate of the adjustable damping axial friction energy absorber installed in the structure slide relative to each other, and friction damping is generated between the outer steel plate and the friction plate, thereby consuming friction energy.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A damping adjustable axial friction energy absorber, characterized in that: The energy dissipator comprises: an outer steel plate, a friction plate, an intermediate plate, and an adjusting magnet; one side of the outer steel plate is provided with a U-shaped groove, and one end is provided with a circular hole for installation; both sides of the intermediate plate are provided with grooves, and one end is provided with a circular hole for installation; the shape and size of the friction plate are consistent with the groove of the intermediate plate, and the thickness is greater than the depth of the groove of the intermediate plate; the friction plate is provided with two pieces, which are symmetrically embedded in the grooves on both sides of the intermediate plate for fixing; the outer steel plates are also provided with two pieces, which are symmetrically placed on both sides of the intermediate plate, and the intermediate plate is embedded in the U-shaped groove of the outer steel plate and can slide along the U-shaped groove; the adjusting magnet is tightly adsorbed on the outside of the two outer steel plates, and the outer steel plates, friction plates, and intermediate plates are connected together by magnetic force.

2. The damping adjustable axial friction energy dissipator according to claim 1, characterized in that: The thickness of the friction plate is greater than the depth of the groove of the intermediate plate.

3. The damping adjustable axial friction energy dissipator according to claim 1, characterized in that: The depth of the U-shaped groove of the outer steel plate is less than half of the total thickness of the middle plate after being embedded in the friction plate, and is greater than the exposed thickness of the friction plate after being embedded in the groove of the middle plate.

4. The damping adjustable axial friction energy dissipator according to claim 1, characterized in that: The width of the U-shaped groove of the outer steel plate is equal to the width of the middle plate.

5. The damping adjustable axial friction energy dissipator according to claim 1, characterized in that: The regulating magnet is square, and the magnetic flux direction is perpendicular to the large surface of the magnet.

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