A new shield tail brush and its assembly process

Abstract

The invention discloses a novel shield tail brush and an assembling technology thereof. The brush is applied to the rear end of a shield tunneling machine, the shield tail brush comprises a base plateand wire brushes, a clamping plate is used for pressing the wire brushes which cling to the outer wall of a duct piece, rivets are used for fixing the wire brushes, the clamping plate and a protection plate, one ends of the rivets are provided with inner holes, one ends of guiding pins are smooth spires, and four prefabricated holes are formed in the base plate. The guiding pins penetrate into asteel wire bunch of the middle wire brush and the prefabricated holes of the base plate, one ends of the rivets are connected with protruding parts of the tail ends of the guiding pins, the rivets follow the guide pins to pass through the custom mold auxiliary position and penetrate through the steel wire bunch of the middle wire brush, the rivets are fixed to the middle of the shield tail brush,and the guiding pins are pushed out by the rivets, fall and are moved away; by means of a custom mold, inner hole openings of the rivets are opened, complete riveted fixing is achieved, and the protection plate is placed. Accordingly, the service life of the shield tail brush can be prolonged, the sealing property is enhanced, the processes are reduced, and the environment is protected.

Description

Technical field: [0001] The invention relates to the mechanical field, in particular to a novel shield tail brush and an assembly process thereof. Background technique: [0002] The shield tail brush is a brush-shaped seal of the shield machine, which is installed at the rear end of the shield machine. A certain amount of viscous grease filler is injected between the shield tail brushes to achieve a seal between the shield machine and the segments. Shield tail brushes play a decisive role in preventing groundwater, outer soil, lining back grouting, etc. from flowing into tunnels. The quality of shield tail brushes directly affects the progress, quality and safety of shield tunneling projects. [0003] Current assembly manufacturing process: [0004] (1) To install the rivets, first install the 4 rivets in the 4 prefabricated holes of the base plate; [0005] (2) Place the compression plate, and put the two layers of compression plate on the corresponding rivets of the bas...

AI Technical Summary

Problems solved by technology

[0011] 1. When the rivet rotates at high speed and passes through the dense steel wire bundle in the middle, it will generate high temperature and material degradation, which will reduce the strength of the steel wire bundle and rivet, resulting in a shortened service life

[0012] 2. When grinding with a grinding machine or a grinding wheel, a large amount of metal dust will be produced, which will endanger the health of the operators, and at the same time cause dust pollution to the factory environment, and have certain environmental and safety risks

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