On-line monitoring device for tool wear of shield machine based on resistance row

A shield machine tool and monitoring device technology, applied in measuring devices, using electrical devices, using electromagnetic means, etc., can solve problems such as difficult maintenance, inability to realize continuous monitoring, and high wiring requirements, so as to ensure reliability and avoid economic losses and personal injury, prolonging the effect of safety life

Inactive Publication Date: 2011-12-21
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Threshold detection technology has the following defects: (1) The warning signal is a switching threshold, which cannot realize continuous monitoring of wear; (2) Most of the sensor signals need to be transmitted by wire, which requires high wiring and is difficult to m

Method used

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  • On-line monitoring device for tool wear of shield machine based on resistance row
  • On-line monitoring device for tool wear of shield machine based on resistance row
  • On-line monitoring device for tool wear of shield machine based on resistance row

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Embodiment Construction

[0016] The structure of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments. It should be noted that this embodiment is descriptive rather than restrictive, and should not limit the protection scope of the present invention.

[0017] The online monitoring device for shield machine tool wear based on the resistance row type is composed of a resistance row 1, a resistance row base 2 and a resistance lead plug 3 to form a resistance row tool wear sensor ( figure 1 ). The resistor row sensor is embedded in the tool 4 of the shield machine, the part where the resistor row contacts the tool is filled with epoxy resin, the part where the resistor row base 2 contacts the tool is provided with a rubber pad 5, and the resistor row base 2 passes through the lock nut 6 is fixed with the tool as a whole ( figure 2 ). A signal amplifier 8 is provided on the cutterhead 7, a transmitting antenna 9 is arranged...

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Abstract

The invention discloses an on-line monitoring device for tool wear of a shield tunneling machine based on a resistance row type. inside the tool of the machine. The part where the resistor row contacts the cutter is filled with epoxy resin to ensure the insulation between the resistor row and the cutter. There is a rubber pad at the contact part between the resistance row base and the cutter, and the rubber pad also has a sealing effect, and the resistance row base is fixed with the cutter as a whole with a lock nut. There are three signal amplifiers on the cutterhead, three transmitting antennas are installed on the back of the cutterhead corresponding to the signal amplifiers, receiving antennas are installed on the inner wall of the soil pressure chamber opposite to the transmitting antennas, and signal receiving antennas are installed in the main cabin of the shield tunneling machine. device. The invention can predict the wear state of the excavating tool on-line, effectively reducing or avoiding the occurrence of huge economic losses, personal casualties and other dangerous accidents caused by tool accident shutdown.

Description

technical field [0001] The invention belongs to the detection technology of large-scale construction equipment, and in particular relates to a device used for monitoring the amount of tool wear during the construction of a shield tunneling machine. technical background [0002] Shield boring machine is a large-scale equipment for tunnel and subway construction. The cutter head drives the cutter for excavation. The diameter of the cutter head used in subway construction is 6.2-6.4m. The cutter head cutter is the key component of the excavation, and it is also the most prone to wear and failure. The wear of the cutter mainly refers to the wear of the blade and the cutter body. The wear and tear of cutting tool also can endanger personal safety besides can't excavation. Real-time monitoring of tool wear during construction has become a core technology developed by foreign excavation equipment manufacturers. [0003] At present, there are two kinds of tool inspections: one is ...

Claims

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Application Information

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IPC IPC(8): G01B7/00
Inventor 侯振德岳澄亢一澜蔡宗熙王燕群
Owner TIANJIN UNIV
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