Stair railing flexible connection device

Abstract

The invention relates to a stair railing flexible connection device which is used for movably connecting an upper stair with a lower stair which are arranged oppositely. The upper stair is provided with a first railing, a second railing and a third railing from top to bottom through vertical rods; the lower stair is provided with a fourth railing, a fifth railing and a sixth railing from top to bottom through vertical rods; the flexible connection device comprises an upper sleeve, a middle sleeve, a first lower sleeve and a second lower sleeve; the upper sleeve is connected between the first railing and the fourth railing in a sliding mode; the middle sleeve is connected between the second railing and the fifth railing in a sliding mode; one end of the first lower sleeve is hinged to the third railing, and the other end of the first lower sleeve is in sliding connection with the middle sleeve; and one end of the second lower sleeve is hinged to the sixth railing, and the other end of the second lower sleeve is in sliding connection with the middle sleeve. Displacement adjustment is achieved through the sliding-embedded mode between the sleeves, and universal hinges in connection rods can ensure relative movement outside any plane between the upper railings and the lower railings and can also ensure the effect that the upper stair and the lower stair do not knock down the railings during relative movement.

Description

technical field [0001] The invention relates to the technical field of shock isolation and shock absorption, in particular to a stair railing flexible connection device used between two shock-isolation structures or between a shock-isolation structure and a fixed structure. Background technique [0002] Seismic isolation technology plays an important role in reducing the damage caused by earthquakes to buildings or bridge structures. Laminated rubber seismic isolation bearings are commonly used seismic isolation devices in seismic isolation technology, which have good horizontal deformation capacity and energy dissipation effect , so it can effectively block the damage to the building caused by the horizontal vibration of the earthquake when it is applied to the building or bridge isolation layer. When setting stairs between two adjacent isolation structures or between an isolation structure and a fixed structure, if traditional fixed stair railings are used, there will be a...

AI Technical Summary

Problems solved by technology

When setting stairs between two adjacent isolation structures or between an isolation structure and a fixed structure, if traditional fixed stair railings are used, there will be a gap between the adjacent isolation structures or between the isolation structure and the fixed structure when an earthquake occurs. Relative movement occurs. On the one hand, the fixed railings will hinder the horizontal free movement of the isolation structure. On the other hand, the isolation structure may be broken under the action of the earthquake. The stair railings between the buildings will pose a great threat to the evacuation of earthquake personnel

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