Adjustable corner arch support clamping mechanism

Abstract

The invention provides an adjustable corner arch support clamping mechanism. The mechanism comprises a driving clamping head, a driven clamping head, a clamping oil cylinder, a fixing base, a corner fixing seat, a sleeve component and a corner oil cylinder. The driving clamping head and the driven clamping head are both movably arranged on the fixing base, and a connecting rod is arranged between the driving clamping head and the driven clamping head. Two ends of the clamping oil cylinder are connected with the driving clamping head and the fixing base respectively. The fixing base and the corner fixing seat as well as the corner fixing seat and the sleeve component are in movable connection. The sleeve component is provided with an adjusting and positioning part, and two ends of the corner oil cylinder are connected with the fixing base and the corner fixing seat respectively. By application of the technical scheme, the adjustable corner arch support clamping mechanism is integrally simple in structure; by cooperation of the driving clamping head, the driven clamping head, the connecting rod and the clamping oil cylinder, clamping and releasing of an arch support can be realized, openness of the clamping heads can be maximized, and high applicability is achieved; due to connection among the fixing base, the corner fixing seat and the sleeve component, free rotation is realized, and construction requirements under various operating conditions can be met.

Description

Technical field [0001] The invention relates to the technical field of tunnel construction, in particular to an adjustable corner arch clamping mechanism. Background technique [0002] In tunnel excavation and support, in order to ensure that the tunnel does not collapse, it is necessary to safely support the local area (such as anchor bolts, erecting steel arches, etc.). Steel arches commonly used are made of I-steel arches and steel bars. The flower arch frame is relatively heavy, so it is generally carried by auxiliary mechanical tools such as loaders, and installed on the steel structure frame by manual shoulder lifting, which is time-consuming and laborious and has great safety Hidden dangers. [0003] The clamps in the prior art have the following defects: (1) One end of the chuck is fixed, and the other end is driven and clamped by an oil cylinder. This results in a small opening of the chuck of the clamping mechanism, which can only be adapted to the installation of the I-...

AI Technical Summary

Problems solved by technology

[0002] In tunnel excavation and support, in order to ensure that the tunnel does not collapse, it is necessary to provide local safety support (such as anchor bolts, erecting steel arches, etc.), steel arches are commonly made of I-steel arches and steel bars The flower arch frame, this kind of arch frame is heavy, so it is generally carried by auxiliary mechanical tools such as loaders, and it is installed on the steel structure bench by manual shoulder-carrying, which is time-consuming and labor-intensive and has great safety Hidden danger

[0003] The clamps in the prior art have the following defects: (1) One end of the chuck is fixed, and the other end is driven and clamped by an oil cylinder, so that the opening of the chuck of the clamping mechanism is relatively small, which can only be adapted to the installation of the I-beam arch. For the flower arch frame made of steel bars, the clamping action cannot be completed, and the flower arch frame cannot be installed; (2) the existing clamping mechanism cannot adjust the angle along the direction of the tunnel section, so when the position of the arch angle is uneven, manual assistance is required It is time-consuming and laborious to adjust the arch frame, and it is not safe; (3) when installing the side arch arch part, because the adjustment of the tunnel direction and the corner of the section direction cannot be carried out, the existing arch clamping mechanism is performing multiple operations. When the steps are excavated, the installation of the side arches cannot be carried out

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