Posture adjusting method for shield tunneling machine

An adjustment method and shield machine technology, which is applied to earth drilling, mining equipment, tunnels, etc., can solve problems such as increased thrust, limited quantity, and small adjustment range

Active Publication Date: 2018-06-26
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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  • Posture adjusting method for shield tunneling 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 for explanation rather than limitation of the present invention.

[0018] A method for adjusting the attitude of a shield machine. The specific steps are as follows: S1. The shield machine is divided into four thrust areas, namely the first thrust area, the second thrust area, the third thrust area, and the fourth thrust area. There are multiple hydraulic cylinders in each thrust area. It is assumed that the thrust of each propulsion 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 area;

[0019] S2. Select the reference area, calculate the difference between the actual 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, namely Assuming that the m-th thrus...

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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 a posture adjustment method, in particular to a posture adjustment method for a shield machine. Background technique [0002] The serpentine change of the shield machine attitude is mainly achieved by adjusting the thrust of the shield. The existing attitude adjustment methods are mainly realized by increasing the local thrust or reducing the thrust in the other two or three directions based on the thrust parameters under 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 actuator in this area within a zone. Due to the limited number of actuators in the same zone, 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 the needs of attitude adjustmen...

Claims

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Application Information

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Patent Type & Authority Applications(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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