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A method for judging the damage of a shield machine disc hob

A disc-shaped hob and shield machine technology, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., can solve the problems of blindness of tools, low efficiency, and tool judgment, so as to reduce investigation time, improve accuracy, well-designed effects

Active Publication Date: 2022-07-08
CHINA RAILWAY FIRST GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) The blindness of judging the damaged cutter based on experience and tunneling parameters is too large, and the damage of the cutter is affected by various factors such as stratum, position, tunneling parameters, etc., and it is difficult to judge accurately;
[0004] (2) There are many forms of tool damage, and a single judgment method cannot judge all types of damage tools;
[0005] (3) Manual tool sampling inspection, increased construction period and cost, and reduced efficiency

Method used

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  • A method for judging the damage of a shield machine disc hob

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Embodiment Construction

[0051] like figure 1 As shown, the present invention comprises the following steps:

[0052] Step 1. Obtaining the historical probability of damage to the disc hob:

[0053] Step 101, number each disc hob on the excavation cutter head, obtain the 1st disc hob, ..., the i th disc hob, ..., the I th disc hob, And mark the respective number marks on the circumference of the cutter ring of one disc hob; wherein, i and I are both positive integers, and 1≤i≤I;

[0054] Step 102, setting the initial value of the damage times of the i-th disc hob to zero;

[0055] Step 103: During the historical excavation process of the shield machine, when the excavation parameters are abnormal for the mth time, manually check each disc hob on the excavation cutter head for the mth time. Damage times n of i disc hob i plus 1;

[0056] Step 104: According to the method described in Step 103, until when m=M, the judgment of each disc hob in the historical excavation process is completed, and the ...

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Abstract

The invention discloses a method for judging the damage of a disk-shaped hob of a shield machine. The method comprises the following steps: 1. obtaining the historical probability of damage to the disk-shaped hob; 2. detecting tool fragments in a mud-water separation station; 3. to be judged The acquisition of the disc hob; Fourth, the judgment of the monitoring parameters of the disc hob. The method has simple steps, reasonable design and low cost, and comprehensive judgment can improve the accuracy of tool damage judgment, reduce the time delay in tool change, and save construction period and cost.

Description

technical field [0001] The invention belongs to the technical field of judging the damage of a disc hob, in particular to a method for judging the damage of a disc hob of a shield machine. Background technique [0002] In the process of shield tunneling, the replacement of cutting tools is very common, especially in hard rock formations, karst formations, and uneven soft and hard formations such as upper soft and lower hard. However, there are as few as a dozen or more than dozens of disc hobs on a cutter head, and the damage to the disc hobs is usually a few of them. To replace the disc hobs at atmospheric pressure, it is necessary to first determine which cutter is faulty. Carry out targeted sampling inspection and replacement, and judge according to experience and driving parameters, but there are the following shortcomings and deficiencies: [0003] (1) Judging the damaged tool based on experience and driving parameters is too blind, and the tool damage is affected by v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D9/08E21F17/00E21F17/18
CPCE21D9/003E21D9/08E21F17/00E21F17/18
Inventor 张玉宝毛知新王建严淦马劲航钟国张立业李占伟董晓龙叶虎杨彦平王鑫徐文博武金城何晓东滕子阳王斌
Owner CHINA RAILWAY FIRST GRP CO LTD
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