An axis-adaptive force magnetically stable clamping device for tunnel construction arch installation

Abstract

The invention discloses an axis adaptive magnetic stabilizing clamping device for arch frame installation in tunnel construction. The axis adaptive magnetic stabilizing clamping device structurally comprises a clamping hook, a reverse disturbance rejection device, a connector, and a supporting device, and the lower end of the clamping hook is nested in the reverse disturbance rejection device andmechanically connected with the reverse disturbance rejection device. The axis adaptive magnetic stabilizing clamping device has the beneficial effects that under the action of an auxiliary plate anda magnetizer, the stabilizing and tightly attaching ability of an arch frame is effectively improved, and the phenomenon of side sliding of the arch frame is avoided; under the action of fixing guiding wheels, sliding resistance of the axis adaptive magnetic stabilizing clamping device and the arch frame is changed into a rolling type, extension resistance is effectively lowered, and stability isincreased; under the action of the reverse disturbance rejection device, the creep phenomenon of a tunnel can be resisted, the slight changed distance can be decreased, and the installation quality ofthe arch frame is improved; and under the action of a protective immunity device, the distances from the arch frame to axes of the tunnel can be equidistant, the emplacement ability is improved, andthe installation efficiency is improved.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to an axis-adaptive-force magnetically stable clamping device used for installing tunnel construction arches. Background technique [0002] In tunnel construction, when encountering weak rock formations, arches need to be installed and supported to improve the stability of the surrounding rock and prevent collapse. The arches generally use steel arches or flower arches, which are strengthened with steel mesh shotcrete The support and the snatching of the arch frame are all clamped by the clamping mechanism, so as to facilitate the installation of the arch frame. [0003] However, when the arch frame is installed in a large-section tunnel, the arch frame is snatched by the clamping mechanism. At this time, due to the large disturbance of the arch frame, under the action of gravity itself, the displacement phenomenon occurs in the direction of the axis of the arch frame itself. As ...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide an axis-adaptive force magnetically stable clamping device for the installation of tunnel construction arches, so as to solve the problem that when installing arches in large-section tunnels, the At this time, due to the large disturbance of the arch frame, under the action of gravity itself, the displacement phenomenon occurs in the direction of the axis of the arch frame itself, which makes it difficult for the arch frame to be located on the inner wall of the large-section tunnel and increases the installation time. , because the weak rock formation in the tunnel is a nonlinear elastic-plastic viscous medium, under the same large stress for a long time, it is easy to cause the rock formation to creep, which makes it difficult to continue the installation of the arch frame, and prolongs the tunnel process problem

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