Slurry stop sealing device of shield machine

Abstract

The invention discloses a shield tunneling machine mortar stop sealing device which comprises a body. Supporting devices are arranged on the side walls of the upper end and the lower end of the body,a sealing device is connected between the two supporting devices and comprises two first sealing rings, two second sealing rings and third sealing rings, the supporting devices comprise mounting grooves formed in the side walls of the body, fixing grooves are formed in the inner bottoms of the mounting grooves, the inner bottoms of the fixing grooves are fixedly connected with a shell, a hollow cavity is formed in the shell, the inner side wall of the hollow cavity is fixedly connected with a motor, the tail end of an output shaft of the motor is fixedly connected with a driving wheel, a fixing rod is arranged in the hollow cavity, and the outer side wall of the fixing rod is fixedly connected with a driven wheel engaged with the driving wheel. The shield tunneling machine mortar stop sealing device is reasonable in structural design, substantial consumption of mortar can be prevented, ground surface settlement is reduced, and the working efficiency of a shield tunneling machine is improved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a slurry-stop sealing device of a shield machine. Background technique [0002] The shield machine is a tunnel boring machine that uses the shield method. The construction method of the shield tunnel is that the tunnel boring machine builds (lays) the "shield" (referring to the supporting segment) of the tunnel while digging, which is different from the open construction. Internationally, the generalized shield machine can also be used in rock formations, but it is different from the open (non-shield method) tunnel boring machine. In our country, tunnel boring machines used in soft ground are customarily called (narrowly defined) shield machines. In the work of open shield machines, the excavation surface is open, which cannot be achieved like earth pressure balance or mud-water balance. Like a shield machine, a dynamically changing pressure balance is established ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the mortar easily flows into the excavation surface due to loose sand and gravel during the construction of the existing shield machine, resulting in serious consumption of mortar, difficulty in controlling the surface settlement, and reducing the working efficiency of the shield machine. The slurry-stop sealing device of the shield machine can prevent a large amount of mortar consumption, reduce ground settlement, and improve the working efficiency of the shield machine

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