TBM dual-mode switching pushing hydraulic system

A hydraulic system, dual-mode technology, applied in the direction of fluid pressure actuators, mining equipment, servo motors, etc., can solve the problems of easy damage of TBM mechanical components and hydraulic components, etc., to solve the problem that the tunnel deviates from the predetermined curve and is easy to control , Solve the effect of controlling complex problems

Active Publication Date: 2014-09-10
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

[0005] In order to overcome the existing TBM construction process, especially during the excavation of curved tunnels, the tunnel deviates from the predetermined curve, and the mechanical components of the TBM are easily damaged, and the hydraulic components in the propulsion system are easily

Method used

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  • TBM dual-mode switching pushing hydraulic system

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] like figure 1 As shown, the present invention includes an oil source, two propulsion modules with the same structure and a two-position four-way electromagnetic reversing valve 13 for realizing mode switching;

[0018] Each propulsion module includes: proportional decompression valve 7, proportional throttle valve 8, three-position four-way electromagnetic reversing valve 9, two parallel propulsion cylinders 10, pressure gauge 11, pressure sensor 12 and overflow valve 14; The oil inlet of the pressure reducing valve 7 is connected with the oil outlet of the second one-way valve 6 in the oil source, the oil outlet of the proportional pressure reducing valve 7 is connected with the oil inlet of the proportional throttle valve 8, and the proportional throttle valve The oil outlet of 8 is connected with the oil inlet P9 of the three-position four-wa...

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Abstract

The invention discloses a TBM dual-mode switching pushing hydraulic system. The system comprises an oil source, two pushing modules and a two-position four-way solenoid directional valve, wherein the two pushing models are identical in structure, and the two-position four-way solenoid directional valve achieves mode switching. The mode that four pushing cylinders are controlled together in dual modes is adopted, so that control is easy under the working condition of linear tunnel excavation, and the problem of complexity of grouping control for a long time is solved, output forces of the four oil cylinders are equal, it is strictly guaranteed that the joint force is in the direction of a main beam, and errors, caused by independent control, of deviation from preset trails are eliminated. The left and right module grouping control mode in the dual modes is adopted for substantially reducing internal force at the tunnel turning positions of a TBM and in the process of direction adjusting, the joint force is in the direction of the main beam, and the problems that components and hydraulic elements of the TBM are damaged due to unbalanced pushing force of the oil cylinders, and a tunnel deviates from a preset curve are solved.

Description

technical field [0001] The invention relates to a TBM propulsion hydraulic system, in particular to a dual-mode switching TBM propulsion hydraulic system which realizes common control and group control of four hydraulic cylinders. Background technique [0002] Hard rock tunnel boring machine (Tunnel Boring Machine, referred to as TBM). TBM adopts mechanical rock breaking, and the cutter head is pressed against the rock through the propulsion system. The cutter head is driven by a frequency conversion motor or hydraulic motor to rotate, and the rock is crushed under the extrusion of the cutter on the cutter head, so that the tunnel is formed at one time. TBM is a large-scale machine that integrates tunnel construction excavation, muck removal, ventilation and dust removal, tunnel track laying, and wind, water and electricity extension. It has construction characteristics of fast, high quality, safety, and environmental protection. equipment. [0003] Open TBMs are widely us...

Claims

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Application Information

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IPC IPC(8): E21D9/00F15B11/16
Inventor 龚国芳张振饶云意吴伟强刘统杨华勇张千里
Owner ZHEJIANG UNIV
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