TBM hob state monitoring and fault diagnosis method and system

A fault diagnosis system and hob technology, applied in measuring devices, earthwork drilling, mechanical bearing testing, etc., can solve the problems of long tool purchase cycle, affecting project progress, affecting project cost and construction period, etc., to avoid distortion of collected signals , Realize precise monitoring and improve the effect of accuracy

Active Publication Date: 2020-06-23
HULUDAO LITIAN HEAVY IND MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The wear state of the above-mentioned TBM hob is one of the key factors affecting the normal excavation of the TBM, and the TBM hob is a consumable part, and the cost is relatively high; specifically, during the excavation process, the loss of the TBM hob accounts for the entire One-fifth to one-fourth of the project cost, some as high as one-third, and the tool purchase cycle is relatively long
[0004] In addition, the inspection, maintenance and replacement of the TBM hob in the prior art are relatively complicated, and the wear state of the TBM hob cannot be accurately judged. If the tool is changed too early, resources will be wasted, and if the tool is changed too late, it will affect the project. progress, which will directly affect the cost and duration of the project

Method used

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  • TBM hob state monitoring and fault diagnosis method and system
  • TBM hob state monitoring and fault diagnosis method and system
  • TBM hob state monitoring and fault diagnosis method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] see figure 1 As shown, it is a structural block diagram of a TBM hob state monitoring and fault diagnosis system provided by this embodiment. It can be seen from the diagram that the overall system specifically includes: a signal acquisition module, a signal transmission module and a host computer;

Embodiment approach

[0042] (1) The signal acquisition module is installed on the cutter head of the TBM hob, and is used to collect the vibration signal of the main bearing of the cutter head and the current signal of the main motor, and convert the collected signal into a transmittable digital signal;

[0043] The specific signal acquisition module includes sensors, acquisition boards, AD conversion chips and memory; where:

[0044] The sensors include a vibration sensor and a current sensor, which are respectively installed on the main bearing and the main motor of the TBM cutter head, so as to collect the vibration signal of the main bearing of the TBM cutter head and the current signal of the main motor;

[0045] The acquisition board includes an integrated amplifier circuit and a filter circuit to convert the collected vibration signal and current signal into an analog signal;

[0046] The AD conversion chip converts the analog signal into a digital signal, and saves the digital signal into ...

Embodiment 2

[0066] see image 3 As shown, it is a flow chart of a TBM hob state monitoring and fault diagnosis method provided in this embodiment. As can be seen from the figure, the overall method specifically includes the following steps:

[0067] S1. Build a signal acquisition module, a signal transmission module and a host computer;

[0068] S2. Based on the signal acquisition module, the vibration signal of the main bearing of the TBM hob cutterhead and the current signal of the main motor are collected, and the collected signal is converted into a transmittable digital signal;

[0069] S3. Transmit the digital signal to the host computer based on the signal transmission module;

[0070] S4. Process and analyze the received signal based on the host computer to obtain the current operating status and fault status of the cutter head and the TBM hob.

[0071] Wherein, step S4 includes:

[0072] S41. Using one of time-domain analysis, frequency-domain analysis or time-frequency domain...

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Abstract

The invention belongs to the technical field of safe operation of TBM hobs, and discloses a TBM hob state monitoring and fault diagnosis method and system. The system comprises a signal acquisition module, a signal transmission module and an upper computer; the signal acquisition module is installed on a cutter head of a TBM hob and is used for acquiring vibration signals of a main bearing of thecutter head and current signals of a main motor and converting the acquired signals into transmittable digital signals; the signal transmission module is used for realizing communication transmissionbetween the signal acquisition module and the upper computer so as to transmit the digital signals to the upper computer; and the upper computer is arranged in a TBM main control room and used for receiving the signals transmitted by the signal transmission module and processing and analyzing the received signals so as to obtain the current operation state and fault state of the cutter head and the TBM hob. To sum up, the real-time monitoring and diagnosis of the TBM hob can be effectively realized, and the problems of distortion of collected signals and mixed signal backgrounds are effectively avoided, so that the monitoring and diagnosis accuracy is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of safe operation of TBM hobs, and in particular relates to a TBM hob state monitoring and fault diagnosis method and system. Background technique [0002] A TBM hob is an excavation tool for breaking hard rock, its function is to cut face rock and flake the rock off the face. It is widely used in the construction of subway tunnels, railway tunnels, water diversion tunnels, underground mineral mining tunnels and urban underground pipe networks in underground space engineering. [0003] The wear state of the above-mentioned TBM hob is one of the key factors affecting the normal excavation of the TBM, and the TBM hob is a consumable part, and the cost is relatively high; specifically, during the excavation process, the loss of the TBM hob accounts for the entire One-fifth to one-fourth of the project cost, some as high as one-third, and the tool purchase cycle is relatively long. [0004] In addition, the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/10G01M13/04G01M13/045G01R19/25E21D9/11
CPCE21D9/108E21D9/11G01M13/04G01M13/045G01R19/25
Inventor 郭亮陈昱坤高宏力董勋刘宸宇李长根陈志强
Owner HULUDAO LITIAN HEAVY IND MACHINERY
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