Rotary joint transition device for shield tunneling machine

Abstract

The invention discloses a rotary joint transition device for a shield tunneling machine. The rotary joint transition device comprises a rack, a wear-resistant strip is arranged on the left side face of the rack, two driving devices are arranged in the middle of the rack, a rotary joint is arranged between the two driving devices, the left end of the rotary joint is fixedly connected with a transition joint, the top and the bottom of the transition joint fixedly communicate with improved channels correspondingly, the improved channels are internally provided with one-way valves, the ends, awayfrom the transition joint, of the one-way valves fixedly communicate with three-way pipes, and the right sides of the three-way pipes fixedly communicate with ball valves. Each slag soil improved channel is provided with the corresponding one-way valve, the three-way pipes are connected to the one-way valves, one of ways of each three-way pipe is connected with the corresponding ball valve, the corresponding ball valve is in a normally closed state, and the another way of each three-way pipe leads to a cutterhead, when side nozzles in the cutterhead are blocked, the ball valves are opened, andthe blocked side nozzles and the improved channels are flushed to be open by high-pressure water paths connected through the ball valves, so that the blocked side nozzles and the improved channels are cleared conveniently.

Description

technical field [0001] The invention relates to a transition device, in particular to a transition device for a rotary joint of a shield machine. Background technique [0002] In recent years, the shield tunneling method has been widely used due to its superiority in construction. During the tunneling process, the shield tunneling machine will inject the muck modifier into the front of the cutter head through the rotary joint and the corresponding pipeline channel, and use To improve the workability of the soil cut by the cutter head of the shield machine, stabilize the face, etc., there are usually a number of slag improvement nozzles distributed in the front of the cutter head, and slag often occurs during the cutting of the soil by the cutter head. The phenomenon of clogging of the soil improvement nozzle, due to the limitation of the internal sealing structure of the rotary joint, the internal passage of the rotary joint is not under high pressure, the pressure of the sp...

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Problems solved by technology

[0002] In recent years, the shield tunneling method has been widely used due to its superiority in construction. During the tunneling process, the shield tunneling machine will inject the muck modifier into the front of the cutter head through the rotary joint and the corresponding pipeline channel, and use To improve the workability of the soil cut by the cutter head of the shield machine, stabilize the face, etc., there are usually a number of slag improvement nozzles distributed in the front of the cutter head, and slag often occurs during the cutting of the soil by the cutter head. The phenomenon of clogging of the soil improvement nozzle, due to the limitation of the internal sealing structure of the rotary joint, the internal passage of the rotary joint is not under high pressure, the pressure of the spewing of the dregs improvement agent cannot flush the clogged nozzle, and it is difficult to clean up the clogged dregs improvement nozzle , if the dregs improvement nozzle is clogged, the improvement effect of the dregs will decline, and problems such as poor slag discharge, mud cake on the cutter head, abnormal wear of the cutter head and cutter will easily occur, which will affect the normal excavation of the equipment in severe cases

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