A double-gate structure of the front gate gate of the bulkhead of the earth pressure balance shield screw conveyor

Abstract

The invention discloses a double-gate structure of the front gate of the bulkhead of an earth pressure balance shield screw conveyor, which comprises a left gate, a right gate, an oil nozzle and a driver, and the left gate and the right gate are relatively movably arranged behind the front bulkhead part, and the left gate and the right gate cooperate with each other and form a sealed cavity; the driver includes a left driver and a right driver, and the left driver and the right driver are symmetrically arranged on the outside of the left gate and the right gate respectively, and the movable end of the left driver is connected to the left The gate is fixedly connected, and the movable end of the right driver is fixedly connected with the right gate; both the left gate and the right gate are provided with oil nozzles, and the oil nozzles communicate with the sealing chamber. The present invention realizes the complete sealing and pressure maintaining of the soil chamber of the shield machine by arranging a double gate structure on the front bulkhead of the screw conveyor and injecting grease into the sealing chamber for sealing.

Description

Technical field [0001] The present invention belongs to the technical field of tunnel construction equipment, particularly relates to a screw conveyor separator EPB double gate structure prior to the gate. Background technique [0002] Earth pressure balance shield tunnel excavation machine is equipment, during operation subjected to pressure from the water and soil excavated tunnel; screw conveyor progressively releasing the pressure in the soil in the bin EPB shield machine, the cartridge will eventually slag territories soil discharge. Under prior art conditions, if the screw conveyor for maintenance, the cartridge will usually soil sediment separator at a front gate is closed, and then poured into a large or concentrated at the nodes in the earth auger cartridge port of the first cylinder at the discharge gate mud and grease, sealing effect. Soil auger cylindrical vessel and a first open section, thick mud and oil chambers is difficult to form a seal, a limited pressure range...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem of poor sealing of the front gate of the bulkhead of the existing screw conveyor, the present invention proposes a double gate structure of the front gate of the bulkhead of the earth pressure balance shield screw conveyor. By designing the front gate of the bulkhead as a double gate structure, the A sealed cavity is formed between the double gates, and grease is injected into the sealed cavity to realize the sealing and pressure maintenance of the soil bin

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