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Wire grid-based shield machine cutter abrasion loss on-line monitoring device

A shield machine tool and monitoring device technology, applied in the direction of measuring devices, electric devices, electromagnetic means, etc., can solve problems such as difficult maintenance, high wiring requirements, and inability to realize continuous monitoring, so as to prolong the safe service life and ensure Reliability, the effect of avoiding economic loss and personal injury

Inactive Publication Date: 2012-02-15
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 maintain
However, the estimated value obtained reflects the average value of the overall tool wear, and its reliability is affected by two factors: First, the empirical curve or empirical formula is suitable for a specific single geological condition and lacks universality

Method used

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  • Wire grid-based shield machine cutter abrasion loss on-line monitoring device
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  • Wire grid-based shield machine cutter abrasion loss on-line monitoring device

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Embodiment Construction

[0018] 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.

[0019] The wire grid-based on-line monitoring device for shield machine tool wear is composed of a resistance grid 1, a resistance grid base 2 and a resistance lead plug 3 to form a wire grid tool wear sensor ( figure 1 , figure 2 ). The wire grid type shield machine tool wear sensor is embedded in the tool 4 of the shield machine. The part where the resistance grid is in contact with the tool is filled with epoxy resin, the part where the resistance grid base 2 contacts the tool is provided with a rubber pad 5, and the resistance grid base 2 is fixed together with the tool through a lock nut 6 ( image 3 ). A signal amplifier 8 is provided on the cutterhead 7; a transm...

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Abstract

The invention discloses a wire grid-based shield machine cutter abrasion loss on-line monitoring device, which comprises a wire grid cutter abrasion sensor consisting of a resistance grid, a resistance grid base and a resistance lead plug, wherein the sensor is embedded in a cutter of a shield machine; the part of the resistance grid contacting the cutter is filled with epoxy resin to ensure that the resistance grid is insulated from the cutter; the part of the resistance grid base contacting the cutter is provided with a rubber pad, the rubber pad has a sealing function, and the resistance grid base is fixed with the cutter into a whole through a locknut; a cutterhead is provided with three signal amplifiers, the back of the cutterhead is provided with three transmitting antennae corresponding to the signal amplifiers; the inner wall of a soil pressure cabin is provided with receiving antennae corresponding to the transmitting antennae; and a shield engine cabin is provided with a signal receiving device. The device can forecast the abrasion state of a digging cutter on line, and effectively reduce or avoid great economic loss and dangerous accidents of casualty and the like due to emergency shutdown of the cutter.

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): E21D9/08G01B7/00
Inventor 侯振德岳澄亢一澜蔡宗熙王燕群
Owner TIANJIN UNIV
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