Electro-hydraulic synchronous uniform loading cutter driving system of tunneling machine

A technology of electro-hydraulic mixing and driving system, which is applied in the direction of fluid pressure actuation system components, mechanical equipment, fluid pressure actuation devices, etc., to reduce system overflow loss, improve operating efficiency, and improve the maximum escape ability

Inactive Publication Date: 2016-05-04
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no cutterhead electro-hydraulic hybrid synchronous load-sharing drive system suitable for tunnel boring machines

Method used

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  • Electro-hydraulic synchronous uniform loading cutter driving system of tunneling machine

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] like figure 1 As shown, the present invention includes an ordinary motor 1, a two-way proportional variable pump 2, an oil supply one-way valve group 3, an oil supply pressure limiting valve 4, a closed circuit safety valve group 5, a flushing valve 6, a flushing pressure limiting valve 7, a replacement Directional valve 8, accumulator 9, electromagnetic proportional relief valve 10, large diameter switch valve 11, bidirectional proportional variable motor 12, main frequency conversion motor 13.1, slave frequency conversion motor 13.2, torque sensor 17 and speed sensor 18.

[0020] Ordinary motor 1 is connected to bi-directional proportional variable pump 2, oil supply check valve group 3 composed of two check valves installed backwards, closed circuit safety valve group composed of two overflow valves installed in reverse parallel connection 5, ...

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Abstract

The invention discloses an electro-hydraulic synchronous uniform loading cutter driving system of a tunneling machine. The electro-hydraulic synchronous uniform loading cutter driving system is characterized in that an ordinary motor is connected with a two-way proportional variable pump; an oil supplementation check valve group, a closed circuit safety valve group, oil openings in the two ends of a flush valve, a reversing valve, a large-drift diameter switching valve and a two-way proportional variable motor are connected in parallel between two oil openings of the two-way proportional variable pump through an isolating switching valve; an oil inlet between two check valves in the oil supplementation check valve group is connected with an oil supplementation system and an oil supplementation pressure limiting valve; an intermediate oil opening of the flush valve is connected with an oil tank through a flush pressure limiting valve; an intermediate oil opening of the reversing valve is connected with an energy accumulator and an electromagnetic proportional overflow valve; the electromagnetic proportional overflow valve and the oil supplementation pressure limiting valve are connected with the oil tank; and the two-way proportional variable motor is connected with a main variable frequency motor and a slave variable frequency motor through a drive system. According to the electro-hydraulic synchronous uniform loading cutter driving system, a motor system and a hydraulic motor system achieve real-time, synchronous and uniform loading drive, the trap escaping ability and adaptability for complex geology of a tunnel tunneling machine are improved, the installing power is decreased, and the energy utilization rate is improved.

Description

technical field [0001] The invention relates to an electro-hydraulic hybrid drive system, in particular to an electro-hydraulic hybrid synchronous load equalization drive system for a boring machine cutter head. Background technique [0002] The tunnel boring machine is a kind of cutter head that is driven by an electric motor or a hydraulic motor to rotate, and is pushed into the rock and soil layer under the propulsion of the hydraulic cylinder, and the rock and soil layer is cut and destroyed by the cutter on the cutter head, so that the entire section of the tunnel can be excavated at one time. Formed large construction machinery. Compared with the traditional drill-and-blast method or cover-excavation method, the tunnel boring machine construction method has the characteristics of fast, high-quality, safe, and environmentally friendly construction. It has been widely used in the construction of urban subways, water diversion, and traffic tunnels. [0003] The cutter he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B21/08F15B1/02E21D9/11
CPCE21D9/11F15B1/024F15B21/08
Inventor 龚国芳刘统彭左石卓吴伟强杨华勇
Owner ZHEJIANG UNIV
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