Compression thrust resistant expansion joint based on friction damping mechanism

Abstract

The present application relates to the technical field of expansion joint, in particular to a pressure and thrust resisting expansion joint based on friction damping mechanism.The present application comprises a bellows and end plates fixed at both ends of the bellows, and friction type axial dampers are arranged along the axial direction of the bellows on the side of the bellows, both ends of the friction type axial dampers are coaxially connected with pull rods connected with the corresponding end plates, and at least one pull rod is axially slidably penetrated through the end plate at the corresponding end; an elastic stopper is arranged between the outer end of the end plate and the penetrated section of the pull rod, so as to elastically absorb energy and stop the relative movement of the end plate and the pull rod when the end plate slides outward relative to the pull rod.The present application can eliminate the rigid impact of the expansion joint at the end point of expansion displacement, and has the ability to buffer and dissipate abnormal thrust under overload working condition, thereby improving the impact resistance and service life of the expansion joint.

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