A mud pipeline breaker used in a shield machine

Abstract

The invention provides a mud pipeline crusher used in a shield machine, the mud pipeline crusher is a closed jaw crusher whose internal pressure can reach a mud fluid above 0.5MPa, and the mud pipeline The road crusher includes a frame, a movable jaw assembly and a sealing gasket that jointly form an internal sealed space, a fixed jaw plate located inside the frame, and a motor drive assembly and a belt located outside the frame; the motor drive assembly and the belt are used The movable jaw assembly is driven to make a reciprocating extrusion movement relative to the fixed jaw plate to crush and crush the stones sandwiched between the two; the movable jaw assembly includes an eccentric shaft arranged on the frame and a The inner movable jaw plate forms a rotating and dynamic seal between the movable jaw assembly and the frame. The mud pipeline crusher provided by the invention has strong crushing capacity, good maintainability, and can provide a sealed environment for high-pressure crushing.

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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