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Hydraulic propelling system for mining tunnel driving machine controlled by ratio flow pressure

A flow pressure, compound control technology, applied in fluid pressure actuators, mining equipment, earthwork drilling and mining, etc., can solve the problem of shield deviation from the design axis, etc., achieve good energy saving effect, precise attitude and direction control, and high sensitivity and the effect of precision

Inactive Publication Date: 2005-01-05
ZHEJIANG UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, in the actual process, due to the complex soil conditions and many unforeseen factors in the construction, the attitude of the shield often changes during the advancing process, and the shield deviates from the design axis.

Method used

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  • Hydraulic propelling system for mining tunnel driving machine controlled by ratio flow pressure

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Embodiment Construction

[0015] In the accompanying drawings, the two-position two-way electromagnetic ball valve 1 and the proportional speed regulating valve 2 are connected in parallel through pipelines 10, 11, 12, and 13. One end of the two-position two-way electromagnetic ball valve 1 is connected to the pipeline 12, and the other end is connected to the pipeline 13. One end of the proportional speed regulating valve 2 is connected to the pipeline 10, and the other end is connected to the pipeline 11; one end of the proportional overflow valve 3 is connected to the pipeline 16, and the other end is connected to the pipeline 17; oil inlet P 4 Connect with line 15, oil return port T 4 Connected with pipeline 18, oil outlet A of three-position four-way electromagnetic reversing valve 4 1 Connect with pipeline 19, oil outlet B 1 Connect with the pipeline 20; the pipeline 17 and the pipeline 18 are connected in parallel and return to the oil tank; the oil inlet A of the hydraulic lock 5 2 Connect w...

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Abstract

The invention discloses a shield development machine hydraulic advancing system with proportion flow pressure compound control. It includes two bits two-way electromagnetic ball valve, proportion adjusting valve, proportion overflow valve, and three-bit four-way electromagnetic change valve, hydraulic lock, balancing valve, pressure sensor and hydraulic oil cylinder with inner shift sensor. The advancing system uses the proportion adjusting valve to control the advancing speed, uses proportion overflow valve to control the advancing pressure, it realizes the compound control of advancing speed and pressure with proper control tactics. Because the invention uses the compound control technology of the proportion flow pressure, it can realize the control to the advancing speed and advancing pressure in the advancing process of the shield development in real-time, thus realizes the control to the soil barn pressure, stratum stability and the ground sedimentation. The system in the invention can be adapted to each kind of stratums, realizes the control to the posture and direction precisely, the energy-saving effect of the system is good.

Description

Technical field [0001] The invention relates to a fluid pressure actuator, in particular to a shield tunneling machine hydraulic propulsion system adopting proportional flow pressure compound control. Background technique [0002] The shield is a full-face tunnel boring machine, which can complete excavation, excavation, tunnel support under the cover of a circular or rectangular and horseshoe-shaped steel cylinder structure that can not only support the formation pressure but also advance in the formation. Nursing and other work. Its biggest feature is that the entire tunneling process is completed under the cover of this steel structure called a shield, so that collapse and surface deformation can be avoided to the greatest extent. Compared with the traditional tunneling technology, the shield tunneling method has the advantages of safety, reliability, high degree of mechanization, good working environment, less earthwork, fast progress, and low construction cost, especia...

Claims

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Application Information

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IPC IPC(8): E21D9/093F15B13/042
Inventor 杨华勇龚国芳胡国良
Owner ZHEJIANG UNIV
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