Propelling device of shield tunneling machine

Abstract

The invention aims at overcoming at least one defect in the prior art, and provides a propelling device of a shield tunneling machine to reduce the support manufacture cost and improve the construction efficiency. The propelling device comprises at least two supports which are detachably connected end to end to form a support set. The shield tunneling machine is arranged on the support set, wherein the shield tunneling propelling direction is the head end, and a counterforce component is arranged at the tail end of the support set. According to the propelling device, by means of the supports which are detachably connected end to end, cyclic utilization of the supports is achieved. The shield tunneling machine is arranged on the supports, the shield tunneling machine conducts propelling forwards through the counterforce component and moves towards the head end relative to the supports. When the shield tunneling machine moves by the distance of at least one support, the support located at the tail end can be detached and moved to the head end, and cyclic utilization of the supports is achieved. The operation method of the propelling device is simple; and because the detachment and installation methods of the supports are simple, dynamic cyclic utilization of the supports can be achieved in the propelling process of the shield tunneling machine, and efficient construction can be achieved.

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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