CN-121976708-A - Electric control rigidity-variable lead rubber support with safety backup function

CN121976708ACN 121976708 ACN121976708 ACN 121976708ACN-121976708-A

Abstract

The application relates to the technical field of vibration isolation supports, in particular to an electric control variable-rigidity lead rubber support with a safe backup function. The soft steel damper comprises a first bearing plate, a second bearing plate, a separation ring, a soft steel damper and a release mechanism, wherein the separation ring is respectively connected with the first bearing plate and the second bearing plate, the magneto-rheological damper is arranged in the separation ring, the soft steel damper is provided with a fixed part and a movable part, the fixed part is connected with the second bearing plate, the movable part is elastically and slidably connected with the fixed part, the release mechanism is connected with the second bearing plate and matched with the movable part to store elastic potential energy between the movable part and the fixed part, and the release mechanism responds to the action of a control system of the magneto-rheological damper to release the elastic potential energy between the movable part and the fixed part, so that the movable part moves towards the first bearing plate and is connected with the first bearing plate. The application can supplement the vibration isolation performance of the support after the electric control vibration isolation support loses electricity or fails, and has higher reliability.

Inventors

XIONG LIANG
LIU JIANG
LIANG TAO
PENG LING
CHEN LIPING
ZHENG WENQUAN

Assignees

中国水利水电第五工程局有限公司

Dates

Publication Date: 20260505
Application Date: 20260402

Claims (10)

1. An electronically controlled variable stiffness lead rubber support with a safety backup, comprising: A first load plate for connecting a structure; A second carrier plate arranged in parallel with the first carrier plate at intervals for connecting a structure; The separation ring is respectively connected with the first bearing plate and the second bearing plate, and a magneto-rheological damper is arranged in the separation ring; The soft steel damper is provided with a fixed part and a movable part, the fixed part is connected with the second bearing plate, and the movable part is elastically and slidably connected with the fixed part; the release mechanism is connected with the second bearing plate and matched with the movable part so as to store elastic potential energy between the movable part and the fixed part; The release mechanism responds to the action of the control system of the magnetorheological damper so as to release elastic potential energy between the movable part and the fixed part, and therefore the movable part moves towards the first bearing plate and is connected with the first bearing plate.
2. The electronically controlled variable stiffness lead rubber mount with safety backup of claim 1, wherein the release mechanism comprises: The vertical base is vertically and fixedly connected with one end of the second bearing plate, and a plurality of retaining rods which are arranged at intervals along the length direction of the vertical base are vertically arranged on the vertical base; a first energy release member connected to the vertical base and cooperating with the retaining bar to release energy under the direction of the retaining bar; The movable slat is provided with a sliding groove which is suitable for accommodating the first energy release piece and the retaining rod, the movable slat is also provided with a first L-shaped guide release groove, the movable part is connected with a second guide release rod, and the second guide release rod is positioned in the first guide release groove; The magnetic attraction assembly is connected between the vertical base and the movable slat and is configured to be powered by a control system of the magnetorheological damper; When the magnetic component is electrified and attracted, the first energy release piece stores energy so that the movable slat has a movement trend away from the vertical base.
3. The electrically controlled variable stiffness lead rubber support with safe backup according to claim 2, wherein the movable slat is provided with a second L-shaped guiding and releasing groove; the soft steel damper is provided with a clamping column in an elastic sliding mode, a first guiding release rod is connected to the clamping column, one end of the first guiding release rod is located in the second guiding release groove, and the clamping column is used for being connected with a first bearing plate.
4. An electrically controlled variable stiffness lead rubber mount with safety backup according to claim 3, wherein the length of the first guide relief groove is greater than the length of the second guide relief groove in the direction of movement of the movable slat.
5. The electrically controlled variable stiffness lead rubber mount with safety backup of claim 2, wherein the first energy release member is configured as a compression spring and is sleeved on the retaining rod.
6. The electric control variable stiffness lead rubber support with the safety backup according to claim 2, wherein a connecting rod is further vertically connected to the vertical base, and the free end of the connecting rod is connected with a sealing piston; The movable slat is provided with a piston hole which can form movable sealing fit with the sealing piston, and the wall of the piston hole is provided with a vent hole.
7. The electrically controlled variable stiffness lead rubber mount with safety backup of claim 6, wherein a delay orifice is formed in the bottom of the piston bore.
8. The electrically controlled variable stiffness lead rubber mount with safety backup of claim 3, wherein the soft steel damper comprises: The clamping columns are positioned in the upper ribs; the lower ribs are arranged in parallel with the upper ribs at intervals; The X-shaped steel plate is connected between the upper rib and the lower rib; the movable strip is connected with the lower rib; the fixing strip is connected with the second bearing plate; The second energy release piece is respectively connected with the movable strip and the fixed strip so that the movable strip has a movement trend away from the fixed strip The first bearing plate is connected with a clamping cylinder which can be clamped with the clamping cylinder.
9. The electrically controlled variable stiffness lead rubber support with safe backup of claim 1, wherein the first bearing plate is further connected with a buffer ring for abutting against a soft steel damper.
10. The electrically controlled variable stiffness lead rubber support with safe backup according to claim 9, wherein the buffer ring comprises a first buffer ring, a second buffer ring and a third buffer ring which are arranged from outside to inside, wherein the widths of the first buffer ring and the second buffer ring are the same and larger than the width of the third buffer ring, and the elastic moduli of the first buffer ring, the second buffer ring and the third buffer ring are sequentially increased.

Description

Electric control rigidity-variable lead rubber support with safety backup function Technical Field The application relates to the technical field of vibration isolation supports, in particular to an electric control variable-rigidity lead rubber support with a safe backup function. Background The lead core support, also called as lead core rubber support or LRB lead core shock insulation rubber support, is a building shock insulation device, belongs to an improved product of a laminated rubber support, and is mainly applied to the field of shock resistance design of building engineering and bridge engineering. In the patent with publication number CN119332824A, the function optimization is carried out on the basis of a lead support, the variable stiffness function based on magneto-rheological control is added, and the support can realize the adaptive adjustment of the initial stiffness of the support according to the vibration/vibration intensity, thereby prolonging the service life of the support and exerting excellent damping effect. However, most of the prior art considers the timeliness and stability of the control mode, and a few people pay attention to how to cope with the vibration/shock environment after unexpected power failure and system failure cause the failure of the stiffness-changing function. Disclosure of Invention The application provides an electric control variable-rigidity lead rubber support with a safety backup, which is characterized in that the safety backup is arranged in the support, the electric control part does not work when working normally, and the electric control part does not work, and vibration isolation is realized through mechanical interlocking control. The application is realized by the following technical scheme: An electronically controlled variable stiffness lead rubber mount with a safety backup, comprising: A first load plate for connecting a structure; A second carrier plate arranged in parallel with the first carrier plate at intervals for connecting a structure; The separation ring is respectively connected with the first bearing plate and the second bearing plate, and a magneto-rheological damper is arranged in the separation ring; The soft steel damper is provided with a fixed part and a movable part, the fixed part is connected with the second bearing plate, and the movable part is elastically and slidably connected with the fixed part; the release mechanism is connected with the second bearing plate and matched with the movable part so as to store elastic potential energy between the movable part and the fixed part; The release mechanism responds to the action of the control system of the magnetorheological damper so as to release elastic potential energy between the movable part and the fixed part, and therefore the movable part moves towards the first bearing plate and is connected with the first bearing plate. In some alternative embodiments, the release mechanism comprises: The vertical base is vertically and fixedly connected with one end of the second bearing plate, and a plurality of retaining rods which are arranged at intervals along the length direction of the vertical base are vertically arranged on the vertical base; a first energy release member connected to the vertical base and cooperating with the retaining bar to release energy under the direction of the retaining bar; The movable slat is provided with a sliding groove which is suitable for accommodating the first energy release piece and the retaining rod, the movable slat is also provided with a first L-shaped guide release groove, the movable part is connected with a second guide release rod, and the second guide release rod is positioned in the first guide release groove; The magnetic attraction assembly is connected between the vertical base and the movable slat and is configured to be powered by a control system of the magnetorheological damper; When the magnetic component is electrified and attracted, the first energy release piece stores energy so that the movable slat has a movement trend away from the vertical base. In some alternative embodiments, the movable slat is provided with a second guiding and releasing groove in an L shape; the soft steel damper is provided with a clamping column in an elastic sliding mode, a first guiding release rod is connected to the clamping column, one end of the first guiding release rod is located in the second guiding release groove, and the clamping column is used for being connected with a first bearing plate. In some alternative embodiments, the length of the first guide release groove is greater than the length of the second guide release groove in the direction of movement of the movable slat. In some alternative embodiments, the first energy release member is configured as a compression spring, and the first energy release member is sleeved on the retaining rod. In some optional embodiments, a connecting rod is further vertically connecte