Shield tail brush and quick-release shield tail sealing device

Abstract

The invention discloses a shield tail brush and a quick-detachable shield tail sealing device, wherein the shield tail brush includes a shield tail brush body and a shield tail brush mounting seat; the shield tail brush body includes a base, a first guard plate and a second guard plate Two guard plates, the outer lower part of the base is provided with a longitudinal opening groove; the bottoms of the first guard plate and the second guard plate are respectively connected with the front inner wall and the rear inner wall of the base, and there are two adjacent brush filament layers. There is a partition; the shield tail brush installation seat includes a seat body and a reinforcing rib; the base is placed inside the seat body, and the reinforcing rib is detachably embedded in the longitudinal opening groove. The quick-detachable shield tail sealing device includes a tail shield shell, a support ring is arranged on the inner wall of the tail shield shell, and a plurality of seats are arranged on the support ring, and a base is arranged inside the seat. The shield tail brush provided by the invention has a simple and reliable structure, can be quickly installed and disassembled, and is easy to use; the quick-release shield tail sealing device provided by the invention also has a simple and reliable structure, can quickly install and disassemble the shield tail brush, and is easy to use advantage.

Description

technical field [0001] The invention relates to the technical field of shield machine construction, in particular to a shield tail brush and a quick-detachable shield tail sealing device. Background technique [0002] The use of shield machine tunneling technology for urban subway construction is the mainstream advanced method of subway construction. For earth pressure balance shield machine construction, the existing shield tail sealing device consists of three shield tail seal brushes and two oil chambers. During the tunneling process of the shield machine, the elastic steel sheet and steel wire of the shield tail seal brush should always be in a state of mutual extrusion with the segment made of concrete lining, thus forming two closed grease chambers; inject grease into the grease chamber After being greased, a dense grease ring will be formed to cling to the outer surface of the segment, thereby closing the gap between the shield shell and the segment, forming a sealed ...

AI Technical Summary

Problems solved by technology

[0003] (1) The installation method of the original shield tail seal brush is uniformly arranged and welded along the 360°circumferential direction of the inner wall of the tail shield. Due to the large number of shield tail brushes, generally about 300, the installation by welding is time-consuming, laborious and inefficient;

[0004] (2) Every time a bid section is completed, all the shield tail brushes need to be removed and re-welded; during excavation construction, if the damaged shield tail brushes need to be replaced, the welding equipment needs to be moved into the tunnel, which is extremely inconvenient and the construction conditions are poor. time consuming

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