Movable trestle for uninterrupted construction of tunnel

The utility model relates to a movable trestle for uninterrupted construction of a tunnel, which comprises a main bridge, a front approach bridge and a rear approach bridge which are respectively matched with the front end and the rear end of the main bridge, a walking unit matched with the movable trestle, and a width adjusting unit matched with the walking unit. According to the movable trestle, the width of the movable trestle can be increased or decreased with the center shaft as the reference, and the displacement amount and the displacement frequency are reduced; large engineering vehicles can pass conveniently, and the vehicle driving path does not need to be adjusted frequently; abrasion of parts of the movable trestle is reduced, and the service life of the movable trestle is prolonged; the method is especially suitable for variable cross-section tunnel construction. 本实用新型涉及一种隧道不间断施工用移动栈桥，包括主桥，配合所述主桥的前端和后端分别设有前引桥和后引桥，配合所述移动栈桥设有行走单元，配合所述行走单元的移动栈桥还设有宽幅调节单元。本实用新型可以以中心轴为基准进行移动栈桥的宽幅的增加或减小，减少位移量、位移频次；便于大型工