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A posture adjustment method for a shield machine

An adjustment method and shield machine technology, which can be used in earth drilling, mining equipment, tunnels, etc., can solve the problems of unsatisfactory attitude adjustment, small adjustment range, limited quantity, etc.

Active Publication Date: 2019-03-29
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited number of actuators in the same partition, when the required thrust is too high, the thrust cannot be increased to the predetermined value, making the adjustment range of the thrust deviation too small to meet the needs of attitude adjustment

Method used

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  • A posture adjustment method for a shield machine

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with specific embodiments, which are to explain rather than limit the present invention.

[0018] An attitude adjustment method for a shield machine, the specific steps are as follows: S1. Divide the shield machine into four thrust areas, which are respectively a first thrust area, a second thrust area, a third thrust area, and a fourth thrust area. A thrust region includes multiple hydraulic cylinders, assuming that the thrust of each thrust hydraulic cylinder is p, p n the total thrust set for the nth thrust region, 1≤n≤4, and is the actual total thrust of the nth thrust region;

[0019] S2. Select the reference area, calculate the difference between the actual thrust value of each thrust area and the thrust setting value of the thrust area, and select the one with the difference less than 0 and the largest absolute value of the difference, that is Assuming that the mth thrust area is t...

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PUM

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Abstract

The invention provides a posture adjusting method for a shield tunneling machine. Jacks in adjacent areas are utilized to serve as compensation power units to be additionally arranged in subarea areasneeding to be compensated, so that the thrust demand is met. Further, in order to expand the compensation range of deviation, the two adjacent areas of the subarea areas needing to be compensated aredivided into the main compensation area and the auxiliary compensation area, and compensation is conducted through the main compensation area and / or the auxiliary compensation area according to the specific value of the deviation of the subarea areas needing to be compensated; specifically, on the basis of an original subarea area of pushing hydraulic oil cylinders of the shield tunneling machine, the adjacent hydraulic cylinder or multiple hydraulic cylinders in the adjacent areas are utilized to serve as the dynamic compensating hydraulic cylinders; and when the shield tunneling machine needs to be subjected to posture adjusting, according to the difference value between the actual thrust of each subarea area and a preset thrust of the subarea area, as for the subarea needing to be subjected to thrust compensation, one or more hydraulic cylinders which are adjacent to the subarea area needing to be compensated are selected from the main compensation area and / or the auxiliary compensation area adjacent to the subarea area needing to be compensated and are classified into the subarea area needing to be compensated, and the deviation pressure of the subarea area is compensated dynamically so as to realize posture adjusting.

Description

technical field [0001] The invention relates to an attitude adjustment method, in particular to an attitude adjustment method for a shield machine. Background technique [0002] The serpentine change in the attitude of the shield machine is mainly achieved by adjusting the thrust of the shield machine partition. The existing attitude adjustment methods are mainly realized by increasing the local thrust or reducing the thrust in the other two or three directions on the basis of the thrust parameters in various geological conditions. However, in the existing attitude adjustment methods, For the increase of local thrust or the decrease of thrust in several other directions, it is often achieved by adjusting the thrust of the actuators in a subarea. Due to the limited number of actuators in the same partition, when the required thrust is too high, the thrust cannot be increased to a predetermined value, so that the adjustment range of the thrust deviation is too small to meet t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/093
CPCE21D9/093
Inventor 孙振川洪开荣韩伟锋李凤远陈馈周建军张兵郭璐郭海坡孙振中
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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