Buffering and damping device with adjustable rigidity and mounting method of buffering and damping device

Abstract

The invention relates to a buffering and damping device with the adjustable rigidity and a mounting method of the buffering and damping device, and belongs to the technical field of the damping components and mounting. The buffering and damping device comprises transverse damping elastomers, a conical receiver, a rigid shaft body and a vertical damping module, wherein the conical receiver, the rigid shaft body and the vertical damping module are coaxially arranged; the transverse damping elastomers are arranged around the side face of the conical receiver at intervals, the conical receiver isconnected with the vertical damping module through the rigid shaft body, and the vertical damping module is arranged below the conical receiver; and the vertical damping module comprises a shell and abutterfly-shaped spring set, one end of the rigid shaft body is connected with the conical receiver and serve as a center guiding tube to penetrate through the butterfly-shaped spring set, and when being mounted in a large-mass and complex environment, the vertical damping module further comprises a viscous damper. The mounting process of the buffering and damping device is easy and rapid, through combined action of the transverse damping elastomers and the vertical damping module, impact energy produced by collision in the mounting process of an upper structure and a lower structure can be fully absorbed, and impact damage is maximally reduced.

Description

technical field [0001] The invention relates to a shock-absorbing device with adjustable stiffness and an installation method thereof, belonging to the technical field of shock-absorbing components and installation. Background technique [0002] The offshore platform is an important infrastructure for offshore oil and gas exploration and work and life, and is mainly composed of an upper block structure and a lower jacket structure. Usually the platform is processed and prefabricated in the onshore factory, and then transported to the designated location on the sea after completion. Combined with the hoisting operation, the jacket is first fixed by piling, and then the relative height between the upper and lower structures is properly adjusted by the floating towing method to move the upper block horizontally. Go above the lower jacket, and finally lower the upper block slowly to complete the limit installation of the upper and lower structures (the upper block and the lower ...

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Problems solved by technology

[0006] The problems existing in the prior art are: the damping devices used in marine engineering are all imported from abroad at present, and the devices need to be welded to the pile legs, the installation is complicated, the volume is huge, and the cost is high, and rubber bearings are mostly used as vertical buffers The rigidity of the material cannot be adjusted, and the rubber is prone to uncontrollable deformation under the impact load and hugs the center guide shaft, affecting the shock absorption effect; the existing devices and technologies are mostly suitable for hollow conduits with equal cross-sections of upper and lower structures, and no longer Applicable to new forms of pile leg structures such as different cross-sections and pipe-in-pipe concrete filled steel pipes

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