一种可变刚度摩擦阻尼器
By introducing a variable stiffness design and a rubber plate structure into the friction damper, the problem of constant resistance during deformation of the friction damper is solved, and the energy dissipation and vibration reduction effect is enhanced with the increase of deformation, thereby improving the service life of the damper.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 四川中震智控科技有限公司
- Filing Date
- 2025-07-04
- Publication Date
- 2026-07-17
AI Technical Summary
Existing friction dampers maintain constant frictional resistance during building deformation, leading to failure when greater resistance is required, thus failing to effectively dissipate energy and reduce vibration.
A variable stiffness friction damper is designed. A rubber plate is placed between the friction plate and the friction pressure plate. The increased deformation of the rubber plate enhances the energy dissipation and vibration reduction capabilities. The movement is restricted by the stop bar and the limit block to prevent excessive deformation.
During building deformation, the energy dissipation and damping capacity of the rubber sheet increases with the increase of deformation, effectively improving the energy dissipation and damping effect of the friction damper, preventing damage to the rubber sheet, and increasing the service life of the damper.
Smart Images
Figure CN224514461U_ABST
Abstract
Claims
1. A variable stiffness friction damper, characterized by: The system includes a friction plate (1), a friction pressure plate (2), a friction material plate (3), a rubber plate (4), a first stop bar (5), a second stop bar (6), a limiting block (7), and a first fastener (8). The friction pressure plate (2) is provided on both sides of the friction plate (1), and the two friction pressure plates (2) are fixedly connected by the first fastener (8). The friction plate (1) has a sliding groove (9) that mates with the first fastener (8). The friction material plate (3) is fixedly mounted on... The friction pressure plate (2) is on and cooperates with the friction middle plate (1), the rubber plate (4) is disposed on the friction pressure plate (2) and cooperates with the friction middle plate (1), the first stop strip (5) is disposed between the friction material plate (3) and the rubber plate (4), the end of the friction pressure plate (2) is disposed with the second stop strip (6) cooperating with the rubber plate (4), and the limiting block (7) is fixedly disposed on the friction middle plate (1) and has a clearance fit with the rubber plate (4).
2. A variable stiffness friction damper according to claim 1, wherein: One side of the rubber plate (4) is fixedly mounted on the friction pressure plate (2) by a first constraint plate (10), and a second constraint plate (11) is fixedly mounted on one side of the rubber plate (4). The second constraint plate (11) cooperates with the friction plate (1).
3. A variable stiffness friction damper according to claim 2, wherein: The rubber plate (4) is fixed to the friction plate (2) by the second fastener (12), and the first constraint plate (10) is provided with a through hole that cooperates with the second fastener (12).
4. A variable stiffness friction damper according to claim 2 or 3, characterised in that: The end faces of the first baffle (5) and the second baffle (6) are flush with the middle of the rubber plate (4).
5. A variable stiffness friction damper according to any one of claims 1-3, characterized in that: The friction material plate (3) is fixed to the friction pressure plate (2) by a third fastener (13).
6. A variable stiffness friction damper according to any one of claims 1-3, characterized in that: Two second stop bars (6) are provided on the end of the friction plate (2), and the limiting block (7) is provided between the two second stop bars (6).
7. A variable stiffness friction damper according to any one of claims 1-3, wherein: The friction plate (1) and the friction pressure plate (2) are arranged parallel to each other.
8. A variable stiffness friction damper according to any one of claims 1-3, characterized in that: The friction plates (2) on both sides of the friction plate (1) are arranged symmetrically.
9. A variable stiffness friction damper according to any one of claims 1-3, wherein: The friction plate (1) is provided with two parallel sliding grooves (9), and each sliding groove (9) is provided with at least two first fasteners (8).
10. A variable stiffness friction damper according to claim 9, wherein: The friction material plate (3) is disposed between the two grooves (9).