Safe replacement device for soil pressure sensor

Abstract

The invention relates to a safe replacement device for a soil pressure sensor. The safe replacement device comprises a mounting hole formed in a shield tunneling machine shell, an inserting plate, andthe soil pressure sensor; the mounting hole communicates with an excavation cabin located in the front portion of the shield tunneling machine shell and the interior of the shield tunneling machine shell; the inserting plate is mounted in the shield tunneling machine shell and arranged at the mounting hole, the inserting plate can slide on the shield tunneling machine shell, and the mounting plate is plugged through the inserting plate by sliding the inserting plate; and the soil pressure sensor is arranged in the mounting hole in an inserted mode and detachably connected with the inserting plate. The safe replacement device has the beneficial effects that the slidable inserting plate is adopted, thus before the base and the soil pressure sensor are jointly taken down from the inserting plate, the mounting hole formed in the shield tunneling machine shell and used for accommodating the soil pressure sensor can be plugged only by sliding the inserting plate, the situation that underground mud water in the excavation cabin flows back into a shield tunneling machine is avoided, thus when the soil pressure sensor is dismounted and mounted during maintenance, the time and labor are saved, and the risk is extremely small.

Description

technical field [0001] The invention relates to equipment for shield tunnel construction, in particular to an earth pressure sensor safety replacement device belonging to the field of tunnel construction machinery. Background technique [0002] In China, shield tunneling machines have been widely used in the construction of subways, large-diameter tunnels, and underground pipelines due to their excellent ground subsidence control, high excavation efficiency, and wide-ranging adaptability to the bottom layer. Among them, the earth pressure balance shield machine is most widely used in the construction of small-diameter tunnels such as subways. The most important feature of the earth pressure balance shield machine is to maintain the balance between the pressure in the excavation chamber of the shield tunneling machine and the soil pressure on the front of the soil to prevent the ground from subsidence or uplift, so for the excavation chamber of the shield machine Pressure mo...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a safe replacement device for earth pressure sensors, which can solve the problems of high risk and time-consuming maintenance of existing sensors

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