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Liquid level switch device and shield tunneling machine

A technology of liquid level switch and shield machine, which is applied to the liquid level indicator for physical variable measurement, mining equipment, earth square drilling and mining, etc. It can solve the problems of short circuit between two electrodes and affect the normal operation of the shield machine, so as to improve the insulation performance, stability improvements

Pending Publication Date: 2021-05-28
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a liquid level switch device to solve the problem that the single assembly hole in the valve block of the liquid level sensor directly corresponds to the position of the two electrodes in the prior art, so that the short circuit of the two electrodes is very easy to occur once it is assembled into water. Technical problem; at the same time, the present invention also provides a shield machine using the above-mentioned liquid level switch device. The single assembly hole in the valve block of the liquid level sensor directly corresponds to the position of the two electrodes. Technical problems affecting the normal operation of the shield machine due to electrode short circuit

Method used

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  • Liquid level switch device and shield tunneling machine
  • Liquid level switch device and shield tunneling machine
  • Liquid level switch device and shield tunneling machine

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Experimental program
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specific Embodiment 1

[0065] Such as Figure 1 to Figure 8 As shown, the shield machine in this embodiment includes a shield body and a cutter head 26. In the shield body, a front excavation bin 21 and a rear air cushion bin 22 are arranged sequentially from front to back. The excavation bin 21 Located on the rear side of the cutter head 26, the air cushion chamber 22 is located on the rear side of the excavation chamber 21, a front partition 23 is set between the air cushion chamber 22 and the excavation chamber 21, and a mud door is arranged at the bottom of the front partition 23, connecting the air cushion chamber 22 and the excavation chamber. The warehouse 21 and the air cushion warehouse 22 include a rear bulkhead 24 .

[0066] Corresponding to the excavation bin 21 and the air cushion bin 22, a slurry inlet pipeline 29 is provided, and a slurry inlet pump 33 is arranged on the slurry inlet pipeline 29, and mud is input into the excavation bin 21. The mud in the excavation chamber 21 will e...

specific Embodiment 2

[0091] The main difference between it and Embodiment 1 is that in Embodiment 1, both the insulating base and the flushing pipe are fixed on the support, so as to avoid excessive openings on the insulating base and affect effective insulation. In this embodiment, when fixing the monitoring electrodes, the flushing pipe can be fixed together on the insulating base. It is separately fixed on the bracket and fixed in the air cushion compartment through the bracket.

specific Embodiment 3

[0093] The main difference between it and the embodiment 2 is: in the embodiment 2, not only the monitoring electrodes are arranged on the insulating substrate, but also the flushing pipe is fixed on the air cushion chamber through the bracket. In this embodiment, the bracket can be omitted for the liquid level switch device, and the bracket can be fixedly installed on the rear bulkhead, and fastening nuts can be pre-embedded on the insulating base to facilitate the connection of the liquid level switch device and the rear bulkhead through bolts. The upper brackets are fixedly assembled together.

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Abstract

The invention relates to a liquid level switch device and a shield tunneling machine, the liquid level switch device used for being installed in an air cushion bin of the shield tunneling machine comprises an insulation base body which is internally provided with two monitoring electrodes at intervals in an insulation mode to achieve liquid level monitoring; the insulating substrate is provided with two wire inlet holes which are not communicated with each other, the two wire inlet holes and the two monitoring electrodes are arranged in a one-to-one correspondence manner, each wire inlet hole is hermetically provided with a corresponding signal cable in a penetrating manner, and the signal cables are conductively connected with the corresponding monitoring electrodes. The two wire inlet holes which are not communicated with each other are arranged on the insulation substrate corresponding to the two monitoring electrodes so that corresponding signal cables can be respectively and hermetically introduced conveniently, the insulating property of the liquid level switch device can be effectively improved, and even if a single wire inlet hole fails to enter water or two wire inlet holes fail to enter water, the two wire inlet holes are not communicated with each other on the insulation substrate, short circuit of the two monitoring electrodes can be effectively avoided, and thus the stability of the liquid level switch device can be effectively improved.

Description

technical field [0001] The invention relates to a liquid level switch device and a shield machine. Background technique [0002] With the development of the economy and the advancement of science and technology, tunnel engineering and rail transit have grown explosively, and the shield tunneling method has been popularized and applied in more and more projects. Slurry shield machines and multi-mode shields equipped with air cushion chambers are widely recognized by construction units due to their small excavation face pressure fluctuations, accurate settlement control, and clean construction environments. [0003] During the construction process of the slurry shield machine and the multi-mode shield machine equipped with an air cushion chamber, the air cushion chamber is filled with half chamber compressed air and half chamber mud. The operation of the slurry inlet and discharge system and the mud pump is closely related to the liquid level of the air cushion chamber. When ...

Claims

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Application Information

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IPC IPC(8): G01F23/22E21D9/087
CPCG01F23/22E21D9/087
Inventor 王又增叶蕾张伟强周小磊徐金秋袁浩浩苏志学刘鑫鑫钟宇李江华董科詹晨菲丁梦俊王晶晶孟祥超
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD