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A composite control attitude adjustment method for shield machine

A technology of composite control and adjustment methods, which is applied in earth-moving drilling, mining equipment, tunnels, etc., and can solve the problems of limited adjustment range and difficult attitude adjustment.

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

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Problems solved by technology

However, the adjustment range of this composite control method is limited, resulting in difficulty in attitude adjustment.

Method used

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  • A composite control attitude adjustment method for shield machine

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0023] First, the shield machine is divided into four thrust areas, which are the first thrust area, the second thrust area, the third thrust area, and the fourth thrust area. Each thrust area includes multiple hydraulic cylinders. The oil inlet of the cylinder is directly connected to a proportional pressure reducing valve, assuming that the thrust of each propulsion hydraulic cylinder is p, p n The total thrust set for the nth thrust region, 1≤n≤4, while is the actual total thrust of the nth thrust area;

[0024] Second, carry out rough adjustment first, the specific steps are as follows:

[0025] S1. 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 whose difference ...

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Abstract

The invention relates to a composite controlled attitude adjustment method for a shield machine. Combination of coarse adjustment and fine adjustment is adopted. Jacks of the adjacent areas are used as a compensation cylinder to fill into a partition area to be compensated, the coarse adjustment is realized, and a proportional pressure reducing valve is used for adjusting the thrust of a single jack to achieve the fine adjustment. Further, in order to expand the compensation range of deviation, the two adjacent areas of the partition area to be compensated are divided into a main compensationarea and a sub-compensation area; compensation is carried out separately by the main compensation area and / or the sub-compensation area according to specific values of the deviation of the partition area, so as to achieve attitude coarse adjustment; and when the coarse adjustment is over, the proportional pressure reducing valve is used for adjusting the thrust of the single jack to achieve the fine adjustment. As a method capable of adjusting a larger deviation range, the method can effectively improve the thrust deviation adjustment range in the partition area of the shield machine, and composite control enables the adjustment to be more precise. The composite controlled attitude adjustment method effectively controls the propulsive attitude of the shield machine, and the construction quality and the construction efficiency are improved.

Description

technical field [0001] The invention relates to an attitude adjustment method for a shield machine, in particular to a composite control attitude adjustment method for a shield machine. Background technique [0002] The propulsion of the shield machine is realized by the jack, and the coordinated action of the jack to keep the shield in a proper posture is an effective measure for the shield to travel along the designed route, but in actual working conditions, the propulsion system will deviate from the preset track. The propulsion system is controlled by zones. The existing composite attitude adjustment methods include composite control of hydraulic cylinders based on pressure and flow, composite control of hydraulic cylinders based on pressure and velocity, and composite control of hydraulic cylinders based on the number and pressure of hydraulic cylinders in the same area. composite control. However, the adjustment range of this composite control method is limited, resu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/093E21D9/06
CPCE21D9/0621E21D9/093
Inventor 李凤远洪开荣韩伟锋张兵孙振川陈馈周建军杨延栋翟乾智王发民孙振中郭海坡
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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