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Working and abrasion state on-line detection method for shield hob

A technology of wear state and detection method, which is applied in the direction of measuring devices, devices used to measure the time required to move a certain distance, instruments, etc., can solve problems that affect the accuracy of real-time monitoring, detection devices or methods are complicated, and achieve simple detection methods Ease of operation, ensure smooth progress, and ensure work efficiency

Inactive Publication Date: 2015-04-15
SHIJIAZHUANG TIEDAO UNIV +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The detection devices or methods in the above two patents are relatively complicated, and the wear state of the hob must be obtained through calculation, and the processing speed will affect the accuracy of real-time monitoring

Method used

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  • Working and abrasion state on-line detection method for shield hob

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] as attached figure 1 The shown shield hob motion state and wear on-line detection device consists of two eddy current sensors, acquisition circuits and a host computer, in which a distance measuring eddy current sensor needs to be installed on the cutter body of the shield hob, and Weld two symmetrical carbide bumps on the cutter body; align the other distance measuring eddy current sensor with the cutter ring of the hob. Use the eddy current sensor aligned to the cutter body of the shield hob to measure the speed of the hob by measuring the distance and recording the time of passing through the protrusion twice; use the eddy current sensor aligned to the cutter ring of the hob to measure the distance Changes to judge the wear state of the hob. The acquisition circuit is a 4-20mA serial port acquisition module.

[0021] The specific detection process is as follows:

[0022] First, use the hob to measure the current and distance curves of the sensor for measuring tool...

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Abstract

The invention discloses a working and abrasion state on-line detection method for a shield hob and is applied to the technical field of shield construction. A detection device comprises two electrical vortex sensors, an acquisition circuit and an upper computer, the rotating speed of the shield hob is measured through one electrical vortex sensor, the abrasion loss of the hob is measured through the other electrical vortex sensor, and thereby, the moving state and the abrasion state of the hob can be determined. The working and abrasion state on-line detection method for the shield hob has the advantages that the moving state and the abrasion state of the shield hob can be timely monitored, a test method is convenient and easy to implement, a test result is accurate, the moving state and the abrasion state of the hob can be timely monitored so as to timely replace the hob, unnecessary loss caused by too early or late replacing of the hob can be reduced, and safe and smooth shield construction can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling. Background technique [0002] With the widespread use of shield machines in China, tool wear has become a key issue affecting project quality and progress. The integrity of the tool and the judgment of the wear state of the tool are the key factors in the normal excavation of the shield machine. How to judge the movement state and wear state of the tool is very important for the safe excavation of the shield machine. When the wear amount of the tool reaches a certain level, it must be replaced immediately, otherwise the load on the adjacent tool will be increased, the wear rate of the remaining tool will be accelerated, and a vicious circle will be formed. Tool replacement is very important. [0003] After retrieval, the patent number is CN103472247A, which discloses an online monitoring device for the rotational speed of a TBM hob, which uses an eddy current sensor to measure the rota...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P3/66G01B7/02
Inventor 郭京波杨绍普牛江川周阳宗章卫刘进志李杰赵红霞
Owner SHIJIAZHUANG TIEDAO UNIV
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