Cutting device of soil pressure balance tube push bench

Abstract

The invention discloses a cutting device of a soil pressure balance tube push bench. The cutting device comprises a cutting tool disc, a soil body conveyor and a stirring bin, wherein the cutting tool disc is provided with cutting tools and a soil body conveying opening; the soil body conveyor comprises a soil body conveying bin which is fixedly connected to the cutting tool disc and communicated with the soil body conveying opening, and a screw rod is arranged inside the soil body conveying bin; the stirring bin is fixedly connected to the soil body conveying bin and communicated with the soil body conveying bin, the stirring bin is provided with a water injection hole and a mud outlet which are communicated with the interior of the stirring bin, and a stirring mechanism which is in transmission connection with the screw rod and a mud discharging mechanism which is arranged at the mud outlet are arranged inside the stirring bin. A soil body cut by the cutting tool disc enters the soil body conveying bin trough the soil body conveying opening, then the soil body is conveyed into the stirring bin through the screw rod, then water is injected into the stirring bin through the water injection hole, meanwhile, the soil body and the water are stirred into muddy water through the stirring mechanism, and finally, the muddy water is discharged out of the mud outlet through the mud discharging mechanism. According to the cutting device, the characteristics that the soil pressure balance is stable, and muddy water balance is good in soil outlet are utilized, and the problem that a worker goes deep into a pipeline for conducting construction is avoided.

Description

Technical field [0001] The invention relates to an earth pressure balance pipe jacking machine, in particular to a cutting device of an earth pressure balance pipe jacking machine. Background technique [0002] The tube-curtain method is a non-excavation process. As a construction technology using small-diameter pipe jacking machines to build large-section underground spaces, it has been developed abroad for more than 20 years. In Japan, the United States, Singapore, and Chinese Taipei, it is a relatively mature construction method used in excavation projects underneath roads, railways, structures, airports, etc. [0003] At present, as an important construction equipment of the pipe curtain construction method, the pipe jacking machine is very common in application. The earth pressure balance pipe jacking machine is especially common, because auxiliary construction measures such as soil reinforcement are basically not used in the construction, which saves the cost of technical me...

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Problems solved by technology

[0004] However, due to the generally small diameter of pipe jacking machines, the problem of excavation of earth pressure balance equipment is exposed. Generally speaking, for pipe jacking machines with a diameter of 1m, it becomes extremely difficult for staff to enter the pipe to assist in excavation, and this difficulty will increase. Becomes more prominent as engineering progresses

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