A shield machine propulsion device

Abstract

The present invention aims to overcome at least one defect of the prior art, and provides a shield machine propulsion device, so as to reduce the manufacturing cost of the support and improve the construction efficiency. It includes at least two detachably connected supports from head to tail to form a support group, and the shield machine is placed on the support group, wherein the propulsion direction of the shield is the head end, and the tail end of the support group is provided with a reaction force member . The invention realizes the recycling of the support through the detachable head-to-tail connection support. The shield machine is placed on the support, and the shield machine is pushed forward through the reaction member, and moves toward the head end relative to the support. When the shield machine moves at least a distance from the support, the support at the tail end It can be disassembled and moved to the head end to realize the recycling of the support. The operation method of the propulsion device of the present invention is simple, and because the method of dismounting and installing the support is simple, the dynamic recycling of the support during the propulsion process of the shield machine can be realized, and efficient construction can be realized.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a shield machine propulsion device. Background technique [0002] In recent years, with the rapid development of cities, the construction of urban subways has developed rapidly, and the construction of urban rail transit has become more and more popular. Shield excavation is now the main method of urban subway construction, but when encountering some complex geology, other construction methods are required. When constructing a tunnel, when the shield machine reaches the excavated tunnel, it is necessary to empty push the shield machine through the excavated tunnel section. In order to ensure that the shield machine is smoothly pushed through the excavated tunnel section, the concrete guide platform in the excavated tunnel is used as the shield body support, and the steel rail laid on the guide platform is used as the shield body walking track. As the propulsion power ...

AI Technical Summary

Problems solved by technology

Application No. 2018111103796 discloses an empty push stepping device. This device adopts the method of laying guide rails on a concrete guide platform with a thickness of nearly one meter, and reserves a reaction force hole on the guide platform, and inserts the reaction force member into the reaction force hole. The horizontal push cylinder of the shield machine acts on the reaction member to advance along the track; both of the above two devices need to lay concrete in advance, which consumes a lot of labor and concrete. High cost and low efficiency

[0004] The publication number is CN102337900A, which discloses a method for empty pushing of a circular padding shield machine. The device is provided with a bracket at the bottom of the shield machine, and two rows of vertical jacks are arranged on both sides, and the horizontal jack transmits force through the reaction member and the bracket. , the horizontal jack exerts force to push the shield machine forward on the bracket, then start the vertical jack to throw away the shield machine, the horizontal jack shrinks, pushes the bracket forward, shrinks the vertical jack and the shield machine falls on the bracket and repeats the above direction Forward propulsion, because the above-mentioned device is in contact with the ground, the forward movement of the bracket and the sliding friction on the ground will easily cause damage to the bracket, and the shield machine is generally as high as thousands of tons, and the vertical jack needs a lot of power. Low efficiency, low reuse rate, high cost

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