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Energy-saving type shield hydraulic pressure control system using hydraulic pressure transformer

A technology of hydraulic control system and hydraulic transformer, which is applied in fluid pressure converters, mining equipment, earthwork drilling and mining, etc. It can solve problems such as energy loss, reduction of overall system efficiency, and impact on equipment life, and achieve high energy transfer efficiency and obvious Energy-saving effect, the effect of avoiding energy loss

Inactive Publication Date: 2008-07-23
ZHEJIANG UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

Most of the traditional shield tunneling machines adopt the valve control method, especially in the propulsion hydraulic system, group valve control will cause a lot of energy loss, and ultimately reduce the overall efficiency of the system
The low efficiency of the system not only wastes energy and affects the life of the equipment, but also deteriorates the construction environment and brings many unfavorable factors

Method used

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  • Energy-saving type shield hydraulic pressure control system using hydraulic pressure transformer

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with drawings and embodiments.

[0013] As shown in the drawings, the motor 4 in the present invention is rigidly connected with the constant pressure variable pump 2 through the coupling 3; 7 is connected with accumulator 10. In the first hydraulic transformer (composed of four sub-hydraulic transformers 14.1, 14.2, 14.3, 14.4 with the same structure), both ends of the variable pump / motor of each sub-transformer are respectively connected to the main oil circuit 11 and the oil tank 1 of the constant voltage network. The two ends of the quantitative pump / motor of each sub-transformer in the hydraulic transformer are respectively connected to the main oil circuit 11 of the constant voltage network, the hydraulic cylinder (composed of four sub-hydraulic cylinders 21.1, 21.2, 21.3, 21.4 with the same structure) and another hydraulic cylinder ( It consists of four groups of sub-hydraulic cylinders 23.1, 2...

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Abstract

The invention discloses an energy-saving shield machine hydraulic pressure control system, adopting hydraulic transformer, which comprises a hydraulic transformer, a motor, a constant pressure variable displacement pump, a two-position three-way reversing valve, a proportional overflow valve, a safety valve, an accumulator, a hydraulic cylinder, a three-position four-way reversing valve, a hydraulic motor, a reducing valve and a two-position two-way reversing valve; wherein, the shield machine driving, the cutter head drive and the spiral transportation system are integrated in a loop; the constant pressure network comprising the constant pressure variable displacement pump and the accumulator provides the system with power energy; the propulsion system adopts group control and comprises a plurality of groups; the discharge capacity of variable displacement pump / motor inside the hydraulic transformer is adjusted in real-time to control the speed and the propulsive force of the propulsion hydraulic cylinder and the rotational speed and the output torque of the hydraulic motor. The energy-saving shield machine hydraulic pressure control system has the advantages of adopting hydraulic transformer and other energy-saving elements and control methods, lossless transfer of energy, guarding against energy loss in the throttling speed regulation system, and good performance of energy-saving.

Description

technical field [0001] The invention relates to a fluid pressure actuator, in particular to a shield energy-saving hydraulic system using a hydraulic transformer. Background technique [0002] Shield boring machine is a modern high-tech tunneling equipment specially used for underground tunnel construction. Compared with traditional construction methods, the shield method has many advantages such as safe and fast construction, high engineering quality, less ground disturbance, and low labor intensity. Due to the adoption of advanced excavation face stabilization technology, shield excavation has shown unique advantages especially in the construction of tunnel projects with complex and changeable geological conditions and harsh construction environments. In addition, shield tunneling also plays an irreplaceable role in satisfying complex route excavation. With the development of science and technology and social progress, shield tunneling will gradually replace traditional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F15B3/00E21D9/093
CPCF15B2211/20538F15B2211/20561F15B2211/20569F15B2211/212F15B2211/214F15B2211/50518
Inventor 杨华勇施虎龚国芳
Owner ZHEJIANG UNIV
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