A kind of pneumatic shield gate gas path switching device

Abstract

The invention discloses a gas path switching device for a pneumatic shield gate, which comprises an air intake duct, an inflation duct, an exhaust duct and a frame, the intake duct communicates with the inflation duct and the exhaust duct respectively, and the intake duct The pipeline is vertically arranged, the inflation pipeline and the exhaust pipeline are arranged in parallel, the air intake valve assembly is installed at the lower end of the air intake pipeline, the inflation pipeline is installed on the top of the intake pipeline, and the left end of the inflation pipeline is installed with an inflation valve assembly. A valve assembly, the exhaust pipe is installed below the inflation pipe, and an exhaust valve assembly is installed on the left end of the exhaust pipe. The beneficial effects of the present invention are: the device can meet the fast and high-precision control requirements for the gate by setting double-circuit switching; by setting manual automatic switching, the control function of the gate is enriched, and the safety and reliability are higher; There are various types of air valves, increasing the security of the system hardware.

Description

technical field [0001] The invention relates to the technical field of pneumatic shield gates, in particular to a gas circuit switching device for pneumatic shield gates. Background technique [0002] Pneumatic shield gate refers to the use of compressed air as the power source to control the fluctuation of the gate by inflating and exhausting the air bag supporting the steel shield gate. Pneumatic gates are not only safe and environmentally friendly, but also have lower overall manufacturing costs and longer service life. In the process of using the pneumatic shield gate, the corresponding gate air circuit switching device is required. The gas circuit switching device is generally composed of various functional gas valves (such as ball valves, pressure regulating valves, slide valves, safety relief valves, one-way valves, etc.) and solenoid valves. electrical control system. [0003] The gas circuit switching device of the existing pneumatic brake has a relatively simple...

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Problems solved by technology

[0004] The object of the present invention is to provide a pneumatic shield gate gas circuit switching device to solve the gas circuit switching device of the existing pneumatic gate proposed in the above background technology. The structure is relatively simple, and a single pipeline is usually used for unified air bag Inflating and exhausting operations, the control part only has a few solenoid valves (such as the main inflation valve and the main exhaust valve), it is difficult to achieve precise, complex and multi-functional control goals, and manual operation is only for the overall inflation and exhaustion of the gate. Exhaust, it is impossible to artificially correct the large deviation of a certain gate

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