A kind of hbw grease system for main seal of shield machine in complex formation

Abstract

The invention discloses an HBW grease system of a composite stratum shield tunneling machine primary seal. The system comprises a grease pump and a grease pump stand column, wherein the grease pump and the grease stand column are connected with an external air compressor. A magnetic exchange valve, pneumatic FRL and a needle valve are sequentially arranged on an air inlet pipe entering the grease pump, and a grease pump approach switch is arranged on the grease pump. A pressure regulating valve, a pressure gage and a hand-operated direction valve are sequentially arranged on an air inlet pipe entering the grease pump stand column, and a high-position limit switch and a low-position limit switch are arranged on the grease pump stand column. A plurality of synchronous shunt motors and low-tension membrane pressure sensors are connected to a grease outlet pipe of the grease pump in sequence, and motor approach switches are arranged on the synchronous shunt motors. According to the HBW grease system of the composite stratum shield tunneling machine primary seal, the grease pump can be started and closed conveniently, air inlet pressure can be regulated conveniently, the rising, declining and motion speed of the grease pump stand column are operated manually, and the high-position limit switch and the low-position limit switch prevent empty beating from conducting on the grease pump and prevent a grease pump seal from being damaged.

Description

technical field [0001] The invention relates to an HBW grease system for the main seal of a shield machine in a compound stratum, and belongs to the technical field of grease systems. Background technique [0002] The shield tunneling machine is a complex electromechanical system used for excavation of underground tunnels. It has the functions of opening and controlling cutting soil, conveying soil muck, assembling tunnel lining, and measuring and guiding deviation correction. At present, the shield tunneling machine has the advantages of fast excavation speed, high quality, low labor intensity, high safety, and small impact on surface settlement and environment. Compared with the traditional drilling and blasting tunnel construction, it has obvious advantages. Good comprehensive benefits. [0003] The compound shield machine refers to the shield machine designed in a targeted manner that can adapt to complex stratum changes. In the construction bid section, the strata of ...

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Problems solved by technology

[0006] 1. There is no pressure sensor at the injection point of each terminal branch, so it is impossible to effectively detect the pressure of the sealing chamber; it is impossible to judge the possible undervoltage of the branch;

[0007] 2. There is no manual detection device. When the electrical components fail, the pipeline needs to be disassembled for inspection, and the maintenance is relatively cumbersome;

[0008] 3. It uses two pneumatic ball valves to control the injection time for the injection volume of the secondary synchronous shunt motor, so as to control the injection volume. There are many components, and the consistency of the injection volume of the secondary synchronous shunt motor cannot be guaranteed.

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