A shield machine propulsion system

A technology of propulsion system and shield machine, which is applied in mining equipment, tunnels, earth-moving drilling, etc., can solve the problems of slow retraction speed, inability to realize hydraulic cylinders, arbitrary changes, etc., to ensure smooth assembly, realize attitude adjustment and The effect of safety protection and rollback speed improvement

Active Publication Date: 2019-07-09
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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Problems solved by technology

[0002] The propulsion system of the shield machine is realized by the hydraulic system controlling multiple oil cylinders. In order to facilitate control, multiple oil cylinders are usually controlled in groups. The grouping strategy of the existing propulsion hydraulic system is fixed, and the number of hydraulic cylinders in the same group cannot be achieved. Arbitrary changes make the forward trajectory of the propulsion system unable to be adjusted flexibly, and the retreat process of the existing propulsion system needs to pass through many valve circuits, making the retreat speed slower and unable to meet the propulsion needs of the existing shield machine

Method used

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  • A shield machine propulsion system
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Embodiment Construction

[0014] 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.

[0015] see figure 1 , a shield machine propulsion hydraulic system, including a plurality of propulsion hydraulic cylinders, the propulsion hydraulic cylinders are divided into four groups, and each group has an odd or even number of propulsion hydraulic cylinders, and the propulsion system also includes a parallel arrangement on the electro-hydraulic reversing valve 1 Working oil port P 1 Four pressure reducing valves 2 at the place, the outlet of each pressure reducing valve 2 is connected to a group of hydraulic cylinders connected in parallel, when the outlet of the pressure reducing valve is connected in parallel to an odd number of hydraulic cylinders, the outlet of the pressure reducing valve 2 is connected with the The oil inlet of the hydraulic cylinder in the middle position of thi...

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Abstract

The invention provides a shield tunneling machine propelling system. According to the shield tunneling machine propelling system, the number of jacks in the same set can be changed randomly, adjustment of an advancing track of the propelling system is more flexible, the returning speed is also further increased, and the propelling requirement of an existing shield tunneling machine is met; throughusing of three-position three-way valves, posture adjustment and safety protection can be achieved during advancing of the shield tunneling machine; and independent control of each jack can be further achieved during segment assembling so as to ensure successful assembling of segments, thus the returning speed is also further increased, and the propelling requirement of the existing shield tunneling machine is met.

Description

technical field [0001] The invention relates to a propulsion hydraulic system, in particular to a shield machine propulsion hydraulic system. Background technique [0002] The propulsion system of the shield machine is realized by the hydraulic system controlling multiple oil cylinders. In order to facilitate control, multiple oil cylinders are usually controlled in groups. The grouping strategy of the existing propulsion hydraulic system is fixed, and the number of hydraulic cylinders in the same group cannot be achieved. Arbitrary changes make the forward trajectory of the propulsion system unable to be adjusted flexibly, and the retreat process of the existing propulsion system needs to pass through many valve circuits, making the retreat speed slower and unable to meet the propulsion requirements of the existing shield machine. Contents of the invention [0003] In order to solve the above problems, the present invention provides a shield machine propulsion system, so ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06E21D9/093
CPCE21D9/0621E21D9/093
Inventor 孙振川洪开荣韩伟锋李凤远陈馈周建军张兵王利明许华国郭海坡孙振中
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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