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CN-224228354-U - Prestress viscous damper

CN224228354UCN 224228354 UCN224228354 UCN 224228354UCN-224228354-U

Abstract

The utility model relates to the technical field of earthquake resistance and discloses a prestress viscous damper which comprises a cylinder body, wherein a piston I is connected inside the cylinder body in a sliding manner, a guide rod is fixedly connected inside the piston I, a piston II is fixedly connected outside the guide rod, a fixing ring is fixedly connected outside the guide rod, support rods are fixedly connected to the left sides of the fixing rings, telescopic springs are sleeved outside the support rods, movable rings are fixedly connected to the left sides of the support rods, support rings are connected outside the support rods in a sliding manner, a cooling assembly is fixedly connected outside the cylinder body, the cooling assembly comprises a hollow ring, an inner cavity is formed inside the hollow ring, and a heat conducting plate is fixedly connected to the outside of the hollow ring. According to the utility model, the prestress of the viscous damper is improved, so that the structural displacement response is effectively inhibited, and the risks of cracking of a building wall and damage of beam column nodes are greatly reduced.

Inventors

  • LI MINGWEI
  • MA ZHONGYUAN
  • DENG YUXIN

Assignees

  • 江苏泓懋节能科技有限公司

Dates

Publication Date
20260512
Application Date
20250430

Claims (8)

  1. 1. The prestress viscous damper comprises a cylinder body (1) and is characterized in that a piston I (2) is connected to the interior of the cylinder body (1) in a sliding mode, a guide rod (3) is fixedly connected to the interior of the piston I (2), a piston II (4) is fixedly connected to the exterior of the guide rod (3), a fixing ring (5) is fixedly connected to the exterior of the guide rod (3), support rods (6) are fixedly connected to the left sides of the fixing ring (5), telescopic springs (7) are sleeved on the outsides of the support rods (6), a movable ring (8) is fixedly connected to the left sides of the support rods (6), a support ring (9) is connected to the exterior of the support rods (6) in a sliding mode, and a cooling assembly is fixedly connected to the exterior of the cylinder body (1).
  2. 2. The pre-stress viscous damper according to claim 1, wherein the cooling component comprises a hollow ring (11), an inner cavity (12) is formed in the hollow ring (11), a heat conducting plate (16) is fixedly connected to the outer portion of the hollow ring (11), radiating fins (13) are fixedly connected to the outer portions of the plurality of heat conducting plates (16), supporting plates (14) are fixedly connected to the left side and the right side of the outer portion of the hollow ring (11), and a guide cover (15) is fixedly connected to the outer portions of the plurality of supporting plates (14).
  3. 3. The pre-stressed viscous damper according to claim 1, wherein the outer part of the piston II (4) is slidably connected to the inner wall of the cylinder (1), and the outer part of the supporting ring (9) is fixedly connected to the inner wall of the cylinder (1).
  4. 4. The pre-stressed viscous damper according to claim 2, wherein an end cover (10) is detachably connected to the left side inside of the cylinder body (1), and the outer parts of the plurality of cooling fins (13) are fixedly connected to the inside of the guide cover (15).
  5. 5. The pre-stressed viscous damper according to claim 2, wherein cooling water is arranged inside the inner cavity (12), and the inner part of the movable ring (8) is fixedly connected with the outer part of the guide rod (3).
  6. 6. A prestressed viscous damper according to claim 4, characterized in that the outer part of the guide rod (3) is slidingly connected inside the end cap (10).
  7. 7. The pre-stressed viscous damper according to claim 1, wherein the right sides of the plurality of telescopic springs (7) are fixedly connected to the left side of the supporting ring (9), and the left sides of the plurality of telescopic springs (7) are fixedly connected to the right side of the moving ring (8).
  8. 8. A prestressed viscous damper according to claim 4, characterized in that the inner part of said inner cavity (12) is provided with cooling water, the outer part of said guide rod (3) being in contact with the inner part of said end cap (10).

Description

Prestress viscous damper Technical Field The utility model relates to the technical field of earthquake resistance, in particular to a prestress viscous damper. Background The earthquake resistance mainly relates to the fields of engineering structures, buildings and the like, and aims to ensure that related objects remain stable and safe under the action of an earthquake, and when the earthquake occurs, the prestress viscous damper can dissipate earthquake energy through the flow of internal viscous fluid, so that the vibration response of the structure is effectively reduced, the displacement and acceleration of the building caused by the earthquake are reduced, the structure is prevented from being damaged or even collapsed due to severe vibration, and the safety and the structural stability of personnel in the building are ensured The pre-stressed viscous damper typically applies a certain pre-stress during installation. This allows the damper to be configured as a member having an initial stiffness, which can change the overall stiffness profile of the structure. For some building structures with insufficient rigidity, especially high-rise buildings, the prestress of the damper can increase the lateral rigidity of the structure and improve the capability of the structure to resist horizontal loads (such as earthquake force and wind force). Taking super high-rise office building as an example, the reasonably arranged prestress viscous damper can effectively reduce lateral movement of the building under the action of strong wind, avoid uncomfortable feeling of personnel in the building caused by overlarge lateral movement, and simultaneously prevent fatigue damage of the structure caused by long-term large deformation. However, in the prior art, the prestress of a part of viscous damper is difficult to improve, and strong wind is also an important horizontal load for super high-rise and large-span structures. When the prestress viscous damper is difficult to improve prestress, the structure cannot obtain enough additional rigidity and damping to resist wind-induced vibration under the action of strong wind. Taking a large-span bridge as an example, wind can cause the bridge to generate larger deflection and vibration, when the damper cannot work effectively, the amplitude of the bridge is continuously increased, the driving safety is affected, the long-term large-amplitude vibration can also cause fatigue damage to key parts of the bridge such as a guy cable, a bridge pier connecting part and the like, the service life of the bridge is reduced, and the prestress viscous damper is provided for solving the problems. Disclosure of utility model In order to make up for the defects, the utility model provides a prestress viscous damper, which aims to solve the problem that the viscous damper in the prior art is difficult to improve prestress. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The prestress viscous damper comprises a cylinder body, wherein a first piston is connected inside the cylinder body in a sliding manner, a guide rod is fixedly connected inside the first piston, a second piston is fixedly connected outside the guide rod, a fixing ring is fixedly connected outside the guide rod, support rods are fixedly connected to the left sides of the fixing rings, telescopic springs are sleeved outside the support rods, movable rings are fixedly connected to the left sides of the support rods in a sleeved manner, support rings are connected outside the support rods in a sliding manner, and a cooling assembly is fixedly connected to the outside of the cylinder body; Through the technical scheme, the damper can work cooperatively from the aspects of vibration energy consumption, prestress adjustment and temperature control. As a further description of the above technical solution: The cooling assembly comprises a hollow ring, an inner cavity is formed in the hollow ring, a heat conducting plate is fixedly connected to the outer part of the hollow ring, radiating fins are fixedly connected to the outer parts of a plurality of heat conducting plates, supporting plates are fixedly connected to the left side and the right side of the outer part of the hollow ring, and a guide cover is fixedly connected to the outer parts of a plurality of supporting plates; Through the technical scheme, the heat generated by viscous fluid friction in the damper is rapidly and efficiently dissipated to the surrounding environment, so that the performance of the damper is not reduced due to overheating when the damper works, and long-term stable operation of the damper is maintained. As a further description of the above technical solution: The outer part of the second piston is connected to the inner wall of the cylinder body in a sliding way, and the outer part of the supporting ring is fixedly connected to the inner wall of the cylinder body; according to the technical