In-tunnel dismantling method for thrust cylinders of shield tunneling machine

Abstract

The invention discloses an in-tunnel dismantling method for thrust cylinders of a shield tunneling machine. The in-tunnel dismantling method comprises the steps that a thrust cylinder support is constructed; red and blue oil cylinders are driven to rise, so that the front ends of the thrust cylinder supports are arranged at the lower parts of the outer ends of every two thrust cylinders in one group; the outer ends of the thrust cylinders are fixed to the thrust cylinder support; a segment erector is driven to travel towards the outer side along a traveling beam, and the thrust cylinders are driven to move outwards in the axial direction; after the thrust cylinders are completely dragged out, a thrust cylinder fixing device is fixed again; the red and blue oil cylinders are recovered downwards, so that the thrust cylinders move downwards along with the thrust cylinder support; a swing mechanism, the thrust cylinder support and the thrust cylinders of the segment erector are driven to rotate around the traveling beam of the segment erector; and when the thrust cylinders on the thrust cylinder support rotate to the position below the traveling beam of the segment erector, the thrustcylinders are unloaded on a transportation trolley on a bottom rail. By means of the in-tunnel dismantling method, a set of thrust oil cylinders can be dismantled at a time at the same time, rapid, efficient and safe operation can be achieved, only supports for bearing and fixing the thrust cylinders need to be additionally arranged, and operation and implementation are easier.

Description

technical field [0001] The invention relates to the technical field of machinery, in particular to a method for dismantling a shield machine propulsion cylinder in a hole. Background technique [0002] The shield machine is a necessary equipment for subway tunnel excavation. After the tunnel construction is completed, due to some special reasons, it cannot slide to the open-air demolition shaft for demolition with crawler cranes or truck cranes. The demolition equipment can only be carried out in the cave. However, due to the small space in the cave, the shield machine itself is not only very large, but also uses many hydraulic cylinders inside, and the dismantling environment is relatively closed, so it is not easy to dismantle. Usually, it is used on the shield inner wall of the shield machine. Welding lugs combined with manual hoists and slings to dismantle the propulsion cylinder. This method can only dismantle a single cylinder at a time, and the removal time is long an...

AI Technical Summary

Problems solved by technology

[0002] The shield machine is a must-use equipment for subway tunnel excavation. After the tunnel construction is completed, due to some special reasons, it cannot slide to the open-air demolition well. The crawler crane or truck crane is used for demolition. The demolition equipment can only be carried out in the cave.

However, due to the small space in the cave, the shield machine itself is not only very large, but also uses many hydraulic cylinders inside, and the dismantling environment is relatively closed, so it is not easy to dismantle. Usually, it is used on the shield inner wall of the shield machine. Welding lugs combined with manual hoists and slings to dismantle the propulsion cylinder. This method can only dismantle a single cylinder at a time, and the removal time is long and the safety cannot be guaranteed. Therefore, the demolition in the hole of the shield machine is the current method of many construction methods. common technical problems

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