Pre-pressing particle friction type damper

Abstract

The invention discloses a pre-pressing particle friction type damper which comprises a friction sleeve and a friction core plate. The two ends of the friction sleeve are plugged with fixing end plates respectively. A movable end plate is arranged in an inner cavity of the friction sleeve; the friction core plate penetrates through the fixed end plate and the movable end plate at any end and extends into an inner cavity of the friction sleeve; connectors are connected to one end, outside the friction sleeve, of the friction core plate and the fixed end plate at the other end; and friction particles are filled between the fixed end plate and the movable end plate which are penetrated by the friction core plate. By means of the friction particle energy dissipation mode, the damping device does not depend on viscous media which are prone to loss, does not need yield deformation of metal materials, can stably work in a wide temperature range, does not have residual deformation after an earthquake, and is suitable for damping requirements of various building structures such as residences and public buildings.

Description

Technical Field

[0001] This invention relates to the field of seismic isolation and damping technology in building engineering, specifically to a pre-compressed particle friction damper. Background Technology

[0002] In the field of building structural engineering, earthquakes pose a significant risk of damage to buildings. Therefore, it is crucial to take effective seismic reduction and isolation measures to ensure the safety of building structures. Dampers, as the core device for achieving seismic reduction, function by dissipating seismic energy, thereby reducing the seismic response of building structures.

[0003] Currently, there are various types of dampers used in building structures, but all of them have obvious defects: viscous dampers rely on the viscous force of viscous liquids to dissipate energy, and their performance is easily affected by temperature, and the durability of viscous materials needs to be further improved; traditional friction dampers rely on the friction of metal friction surfaces to dissipate energy, and the friction surfaces are prone to wear, and the friction coefficient is difficult to maintain stability after long-term use, which leads to large fluctuations in energy dissipation performance; metal dampers dissipate energy through the yield deformation of metal materials, and residual deformation is easily generated after earthquakes, which has an adverse effect on the subsequent use function of the structure.

[0004] Therefore, there is an urgent need to develop a new type of damper to overcome the shortcomings of existing technologies and improve the vibration reduction effect and safety of building structures under earthquake action. Summary of the Invention

[0005] The purpose of this invention is to provide a pre-compressed particle friction damper to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following solution: A pre-compressed particle friction damper includes a friction sleeve and a friction core plate; The friction sleeve is sealed with fixed end plates at both ends; The friction sleeve has a movable end plate in its inner cavity; The friction core plate passes through the fixed end plate and the movable end plate at either end and extends into the inner cavity of the friction sleeve; The friction core plate is connected to a connector at one end outside the friction sleeve and at the other end of the fixed end plate. Friction particles are filled between the fixed end plate and the movable end plate through which the friction core plate passes.

[0007] Furthermore, the movable end plate is slidably arranged in the inner cavity of the friction sleeve; A prestressed tie rod is provided between the movable end plate and the fixed end plate through which the friction core plate passes; One end of the prestressed tie rod passes through the fixed end plate through which the friction core plate passes and is connected to an anchor, while the other end passes through the movable end plate and is also connected to an anchor.

[0008] Furthermore, friction pads are attached to the friction core plate along its body.

[0009] Furthermore, the friction particles include one or more of metal particles, non-metal particles, or slag.

[0010] Furthermore, a sealing ring is provided at the connection between the friction core plate and the fixed end plate through which the friction core plate passes.

[0011] Furthermore, a sealing ring is provided at the connection between the friction core plate and the movable end plate.

[0012] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of the present invention are as follows: This invention dissipates energy through frictional particles, without relying on easily worn viscous media or requiring metal materials to undergo yielding deformation. It can operate stably over a wide temperature range and leaves no residual deformation after an earthquake, making it suitable for the vibration reduction needs of various building structures, including residential and public buildings.

[0013] When the friction core plate slides, it not only forms a friction contact surface with the friction particles, but also generates secondary friction between the friction particles due to compression and relative motion, forming a multi-contact surface energy dissipation system. Compared with the single metal friction surface of traditional friction dampers, the friction contact area of ​​this invention is larger and there are more energy dissipation paths, which can more efficiently dissipate seismic energy and further reduce the seismic response of building structures. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a cross-sectional view of the pre-compressed particle friction damper of the present invention; Figure 2 This is a vertical sectional view of the pre-compressed particle friction damper of the present invention.

[0016] Explanation of reference numerals in the attached figures: 1. Friction sleeve; 2. Friction core plate; 3. Fixed end plate; 4. Movable end plate; 5. Connector; 6. Friction particles; 7. Prestressed tie rod; 8. Anchor. Detailed Implementation

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0018] Example See Figure 1-2 As shown, this embodiment provides a pre-compressed particle friction damper, including a friction sleeve 1 and a friction core plate 2; Both ends of the friction sleeve 1 are sealed with fixed end plates 3; The friction sleeve 1 has a movable end plate 4 inside its cavity; The friction core plate 2 passes through the fixed end plate 3 and the movable end plate 4 at either end and extends into the inner cavity of the friction sleeve 1; The friction core plate 2 is connected to a connector 5 on one end outside the friction sleeve 1 and on the fixed end plate 3 on the other end. Friction particles 6 are filled between the fixed end plate 3 and the movable end plate 4 through which the friction core plate 2 passes.

[0019] Specifically, the friction sleeve 1 is connected to the building or other structures through the connectors 5 located at both ends. When vibration displacement occurs, the force begins to pull the friction core plate 2. When the friction core plate 2 slides inside the friction sleeve 1, it will rub against the friction particles 6 to consume the energy generated by the vibration and protect the building or other structures.

[0020] Specifically, the movable end plate 4 is slidably arranged in the inner cavity of the friction sleeve 1; A prestressed tie rod 7 is provided between the movable end plate 4 and the fixed end plate 3 through which the friction core plate 2 passes; One end of the prestressed tie rod 7 passes through the fixed end plate 3 through which the friction core plate 2 passes and is connected to the anchor 8, while the other end passes through the movable end plate 4 and is also connected to the anchor 8.

[0021] By changing the length of the prestressed tie rod 7 extending into the friction sleeve 1, the movable end plate 4 is moved and its position is changed, thereby achieving the effect of squeezing the friction particles 6, adjusting the density of the friction particles 6, and thus changing the squeezing force, so that the damper can cope with vibrations at different upper limits.

[0022] Specifically, friction pads can be attached to the friction core plate 2 along its body, or the body of the friction core plate 2 can be sandblasted or shot blasted to improve the friction coefficient of the friction core plate 2.

[0023] Specifically, the friction particles 7 can be one or more of metal particles, non-metal particles, or slag.

[0024] Specifically, in order to ensure the sealing between the friction core plate 2 and the fixed end plate 3, a sealing ring is provided at the connection between the friction core plate 2 and the fixed end plate 3 through which the friction core plate 2 passes; in order to ensure the sealing between the friction core plate 2 and the movable end plate 4, a sealing ring is provided at the connection between the friction core plate 2 and the movable end plate 4.

[0025] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A pre-compressed particle friction damper, characterized in that, This includes friction sleeves and friction core plates; The friction sleeve is sealed with fixed end plates at both ends; The friction sleeve has a movable end plate in its inner cavity; The friction core plate passes through the fixed end plate and the movable end plate at either end and extends into the inner cavity of the friction sleeve; The friction core plate is connected to a connector at one end outside the friction sleeve and at the other end of the fixed end plate. Friction particles are filled between the fixed end plate and the movable end plate through which the friction core plate passes.

2. The pre-compressed particle friction damper according to claim 1, characterized in that, The movable end plate is slidably arranged in the inner cavity of the friction sleeve; A prestressed tie rod is provided between the movable end plate and the fixed end plate through which the friction core plate passes; One end of the prestressed tie rod passes through the fixed end plate through which the friction core plate passes and is connected to an anchor, while the other end passes through the movable end plate and is also connected to an anchor.

3. The pre-compressed particle friction damper according to claim 1, characterized in that, Friction pads are attached to the friction core plate along its body.

4. The pre-compressed particle friction damper according to claim 1, characterized in that, The friction particles include one or more of the following: metal particles, non-metal particles, or slag.

5. A pre-compressed particle friction damper according to claim 1, characterized in that, A sealing ring is provided at the connection between the friction core plate and the fixed end plate through which the friction core plate passes.

6. The pre-compressed particle friction damper according to claim 1, characterized in that, A sealing ring is provided at the connection between the friction core plate and the movable end plate.

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