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Shield tunneling machine upper shield deformation detection and online correction method

A technology of shield machine and shield body, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., and can solve the problems of low precision and large measurement error of shield body

Inactive Publication Date: 2019-08-20
CHINA RAILWAY CONSTR HEAVY IND
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Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a method for detecting and on-line correction of the deformation of the shield body on the shield machine, which can effectively solve the problem of large measurement error and low precision of the shield body on the shield machine

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  • Shield tunneling machine upper shield deformation detection and online correction method

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Embodiment Construction

[0030] The embodiment of the invention discloses a method for detecting and on-line correction of shield body deformation on a shield machine, so as to improve measurement efficiency and measurement quality, and achieve better product quality.

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0032] See figure 1 , figure 1 It is a schematic flow diagram of a method for detecting and on-line correction of shield body deformation on a shield machine according to a specific embodiment of ...

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Abstract

The invention discloses a shield tunneling machine upper shield deformation detection and online correction method. The method includes the steps that laser scanning data of N measuring areas of a shield are collected respectively, the fitting diameter of the shield is obtained according to the laser scanning data, and a three-dimensional image of the shield is obtained through rendering; whetherthe difference value of the fitting diameter and the design diameter of the shield is in the preset range or not is judged, and if the difference value of the fitting diameter and the design diameterof the shield is in the preset range, scanning is stopped; and if the difference value of the fitting diameter and the design diameter of the shield is not in the preset range, the position of a supporting point of the shield is adjusted according to the shield deformation reflected by the three-dimensional image, laser scanning data of all the measuring areas are collected again, subsequent stepsare executed, and scanning is stopped till the difference value of the fitting diameter and the design diameter of the shield is in the preset range. By means of the method, deformation of a workpiece can be accurately obtained, errors between the deformation of the workpiece and the theoretical mathematical model are obtained, and therefore proper correction can be conducted conveniently. In addition, the method is not limited by to-be-machined sizes, the measuring and detection size range is enlarged, an existing cumbersome measuring mode is changed, and the measuring efficiency and the measuring quality are improved.

Description

Technical field [0001] The invention relates to the technical field of on-line measurement, and more specifically, to a method for detecting and on-line correction of shield body deformation on a shield machine. Background technique [0002] In the welding and assembling process of large ring parts, it is necessary to detect the deformation and correct and adjust the results of the detection, which requires obtaining accurate deformation data and position. [0003] For the measurement of the shield body on the shield machine, the traditional method is to use a steel ruler, but this method is labor-intensive and cannot accurately reflect the shape and position error, which is of little significance for the next step of correction. [0004] A total station is also used to measure the size. Although the total station has a faster data collection time and data processing time, it has a low degree of automation and requires more technical personnel. The essential reason for its faster pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06
CPCE21D9/003E21D9/06
Inventor 张静乔闯张杨杰谭磁安徐山高继民刘彦希
Owner CHINA RAILWAY CONSTR HEAVY IND
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