Oblique multi-directional displacement telescopic device

Abstract

The invention discloses an oblique multi-directional displacement expansion device, which comprises a sliding end displacement device, a fixed end displacement device, and a seam-spanning beam; both ends of the seam-spanning beam are installed on the sliding end displacement device, the fixed end On the position device; the sliding end displacement device includes the sliding end base, the rear seat, the guide plate, the guide sleeve rail, the rotating ball crown, the rotating ball seat, the leading guide sleeve of the sliding end, the cover plate; the guide pressing plate and the sliding end base Fix the guide rail, rotating spherical crown, rotating ball seat, and the front guide sleeve of the sliding end on the base of the sliding end; The positioning device is composed of the fixed end base, the fixed end front guide sleeve, the fixed end rear guide sleeve, the fixed end cover pressing plate, the rotating ball crown and the rotating ball seat; . The invention improves the driving comfort, reduces the structural size of the bridge expansion joint installation groove, reduces shock and noise, and is convenient for installation, replacement and maintenance.

Description

technical field [0001] The invention belongs to the technical field of bridge expansion and contraction, and in particular relates to an oblique multidirectional displacement expansion device. Background technique [0002] Expansion devices are required on the bridge to meet the expansion and contraction requirements of the bridge. The telescopic device is a key part of the bridge components and plays an important role in realizing the bridge function. Common bridge expansion devices include plate rubber expansion devices, steel modular expansion devices, and comb-tooth plate expansion devices. During the construction and operation of the bridge, it will be subjected to vehicle loads, shrinkage and creep of the bridge's own materials, foundation settlement, wind load, etc., causing deformation of the bridge beam end. [0003] However, the currently used telescopic devices can only meet the horizontal telescopic adjustment, and cannot meet the vertical displacement deformat...

AI Technical Summary

Problems solved by technology

[0004] The section steel modular expansion devices currently on the market have large longitudinal expansion gaps, uneven expansion, concentrated impact force, severe vehicle jumping, fragile concrete, high damage rate of expansion parts, high manufacturing costs, and reserved slots for design. Phenomena such as depth are more prominent

Especially for suspension bridges, cable-stayed bridges, and oblique and curved bridges, due to the inevitable multi-directional displacement of the bridge structure, the defects that do not meet the requirements of lateral and multi-directional displacement have been seriously exposed during the use process

However, for cable-stayed bridges and suspension bridges with high requirements for vertical deformation and large longitudinal and lateral displacements, it is difficult for bridge modulus telescopic devices to meet the requirements for multi-directional displacements.

However, the conventional comb-tooth plate expansion joints cannot meet the vertical corner requirements of the bridge girder body.

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