Shield tail sealing device for shield machine

Abstract

The invention discloses a shield tail sealing device for a shield machine. The shield tail sealing device comprises a plurality of shield tail brushes arranged on a shield tail, a steel plate brush which is arranged on the shield tail and is positioned behind the shield tail brushes, and a sealing plate which is arranged on the shield tail and is positioned between two adjacent shield tail brushes at the last end; one end of the sealing plate is connected with the shield tail in a rotatable way, and the other end of the sealing plate is clamped on the shield tail in a detachable way; and an air bag which can be inflated, and pushes the sealing plate to ensure that the sealing plate is separated from the position where the shield tail is clamped with the sealing plate, and is pressed against a pipe piece tightly. Due to the adoption of the technical scheme, compared with the prior art, the shield tail sealing device for the shield machine has the advantages that the shield tail sealingdevice is provided with the shield tail brushes and the sealing plate, and the air bah can push the sealing plate out to be pressed against the pipe piece, so the sealing effect is achieved.

Description

technical field [0001] The invention relates to a shield tail sealing device of a shield machine. Background technique [0002] Shield tunnel boring machine, referred to as shield machine, is a special construction machine for tunnel boring. The shield tail brush is often used in the construction of soft soil tunnels. It is an important part of the shield equipment. To ensure a good sealing effect, place groundwater, outer soil, grouting on the back of the lining, etc. to flow into the tunnel, so as to ensure the safety of tunnel excavation and the smooth progress of the project. The shield tail sealing device in the prior art is composed of three shield tail brushes and a steel plate brush. The three shield tail brushes form two grease compartments. Water and slurry leakage at the shield tail of the shield machine is quite common. During the construction process, the repair Or the cost of replacing the shield tail brush is relatively high, and the construction progress is...

AI Technical Summary

Problems solved by technology

The shield tail sealing device in the prior art is composed of three shield tail brushes and a steel plate brush. The three shield tail brushes form two grease compartments. Water and slurry leakage at the shield tail of the shield machine is quite common. During the construction process, the repair Or the cost of replacing the shield tail brush is high, and it will affect the construction progress

In previous projects, many different countermeasures were tried to deal with slurry leakage at the tail of the shield, but the ideal results were often not achieved, which affected the normal progress of shield construction

Images