Movable turnout platform used for shield tunnel

Abstract

A movable turnout platform used for a shield tunnel is characterized in that a front rail guide wheel, a rear rail guide wheel and wear-resistant plates are mounted at contact ends of a rail D and a rail A which are integrated with a middle rail, a first slope bogie, a plane bogie and a second slope bogie are connected through pins, so that turning of the movable turnout platform can be realized; a rail B and a rail C are paved in parallel, rail integration and disintegration are realized by switch machinery of a single turnout, and mine car staggering is completed; four rails of tunnel rails are distributed in parallel, an assorted bogie of a shield machine runs on two outer bogie rails of the tunnel rails, the last bogie is connected with the first slope bogie through a connecting device and draws the movable turnout platform to run on two middle rails paved in the middle of bogie rails, mine cars are staggered at a place of running-in and running-out mine cars closest to the tail of a shield. The movable turnout platform has the advantages that construction period of excavation is shortened, tunneling efficiency is improved, construction investment is saved and transport is safe and reliable and the like.

Description

technical field [0001] The technology of the invention mainly relates to a movable turnout platform, which is especially suitable for the movable turnout platform of a shield tunnel, and belongs to the technical field of shield tunneling equipment. Background technique [0002] The production capacity of the shield machine directly depends on whether the transportation of the ballast and the delivery of materials are in place in time. The outbound objects are mainly a large amount of muck produced by excavation, and the inbound objects are materials and tools required for tunnel support and tunnel extension. The current shield tunnel transportation generally adopts the rail transportation scheme of mine cars, using fixed turnouts, and the mine cars driving out and in can only be staggered at fixed locations. After the long-distance construction of the shield machine, due to the long distance between the fixed turnout and the tail of the shield machine, it takes a long time ...

AI Technical Summary

Problems solved by technology

During the period of driving out and in of the mine car, the shield machine must stop construction. It takes 6 minutes for the outbound minecart to drive to the fixed turnout and make a mistake with the incoming minecart, and it also takes 6 minutes for the minecart to drive to the tail of the shield machine. The whole process wastes 12 minutes

During this period of time, the construction of the shield machine needs to be stopped, which affects the excavation efficiency.

With the excavation of the shield machine, the greater the distance between the shield tail and the fixed turnout, the longer the time for unloading and transporting the materials required for excavation, segments, i.e. inverted arches, and knives, and the longer the downtime. It affects the excavation speed of the project and causes great economic losses to the construction unit

[0003] Even if the construction party adjusts the distance between the fixed turnout and the tail of the shield machine on time, it will take a long time to disassemble and splice the track, which will seriously affect the progress of the construction period. This is a common problem in excavating tunnels with shield tunneling

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