Slurry pipeline crusher used in shield machine

Abstract

The invention provides a slurry pipeline crusher used in a shield machine. The slurry pipeline crusher is a closed slurry fluid jaw crusher with the inside having a sealed pressure reaching above 0.5MPa, and the slurry pipeline crusher comprises a frame, a movable jaw assembly, sealing gaskets, a fixed jaw plate positioned in the frame, and a motor driving assembly and a belt positioned outside the frame, wherein the frame, the movable jaw assembly and the sealing gaskets form an internal sealing space; the motor driving assembly and the belt are used for driving the movable jaw assembly to carry out compound pendulum extruding motion relative to the fixed jaw plate in order to extrude and crush bones between the movable jaw assembly and the fixed jaw plate; and the movable jaw assembly comprises an eccentric shaft arranged on the frame and a movable jaw plate positioned in the frame, and a rotation seal is formed between the movable jaw assembly and the frame. The slurry pipeline crusher has strong crushing ability and good maintainability, and can provide high-pressure crushing sealing environment.

Description

technical field [0001] The invention belongs to the technical field of tunneling machinery, and in particular relates to a mud pipeline breaker in a shield machine mud water circulation and rock crushing system. Background technique [0002] From the front end of the excavation position to the rear end of the shield machine, it consists of an excavation cabin containing a cutter head, an air cushion cabin and a trailer. The main purpose of the air cushion cabin is to balance and stabilize the excavation surface. At present, in the process of tunnel excavation by the shield machine in the water-rich sand and pebble stratum using the mud-water balance method, it is necessary to remove the muck through the mud-water circulation system and maintain the stability of the excavation surface; at this time, the shield machine dregs method is: The muck and pebbles after disc cutting and the mud injected from outside the tunnel are mixed in the excavation cabin to form a fluid that ent...

AI Technical Summary

Problems solved by technology

When the shield machine is constructing tunnels in the water-rich strata with high content, high hardness, and large particle size pebbles in southwest, northwest, and north China, the crushing speed of the hydraulic jaw crusher in the air cushion cabin is only four per minute. times, and often damaged under harsh working conditions, it is impossible to quickly crush the pebbles with large flow and large particle size in the air cushion cabin to the conveying range of the slurry pump, and it is very easy for the shield machine to have pebbles in the air cushion cabin and muddy water Faults such as the blockage of the slurry outlet pipeline of the circulation system and the damage of the slurry discharge pump caused the shield machine to be shut down for maintenance for a long time, which greatly limited its excavation ability.

[0003] Therefore, this field needs to develop a kind of new mud pipeline crusher to overcome the problem that the crushing capacity of the hydraulic jaw crusher in the above-mentioned air cushion cabin is too low

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