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Energy-saving shield hydraulic feeding system for energy accumulator mounted on side of feeding oil inlet

An oil inlet and accumulator technology, applied in mining equipment, earthmoving, tunnels, etc., to reduce energy loss

Active Publication Date: 2013-09-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the existing shield hydraulic propulsion system in terms of energy saving, the purpose of the present invention is to provide an energy-saving shield hydraulic propulsion system with an accumulator installed on the side of the propulsion oil inlet

Method used

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  • Energy-saving shield hydraulic feeding system for energy accumulator mounted on side of feeding oil inlet

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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 present invention includes a hydraulic pump source composed of a variable pump 2 controlled by an electric motor 1, a proportional relief valve 3 and a one-way valve 4; the pressure pipeline P is connected to the oil outlet of the one-way valve 4, and the oil return pipeline T Connecting to the oil tank, there are four hydraulic propulsion partitions with the same structure and different numbers of propulsion cylinders, which are sequentially connected in parallel between the pressure pipe P and the oil return pipe T.

[0014] The upper hydraulic propulsion area (that is, area 1 in the figure) includes: electromagnetic reversing valve 5.1, two electromagnetic switch valves 6.1, 11.1, accumulator 7.1, proportional throttle valve 8.1, proportional overflow valve 9.1 and three propulsion hydraulic pressure Cylinder 10.1; the oil inlet P...

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Abstract

The invention discloses an energy-saving shield hydraulic feeding system for an energy accumulator mounted on a side of a feeding oil inlet. The energy-saving shield hydraulic feeding system comprises a hydraulic pump source which is composed of a variable pump controlled by a motor, a proportional relief valve and a one-way valve; a pressure pipeline is connected with an oil outlet of the one-way valve; an oil return pipeline is connected with an oil tank; upper, lower, left and right four hydraulic feeding areas are in parallel connection between the two pipelines in turn; and each of the hydraulic feeding areas comprises a solenoid directional valve, two electromagnetic switch valves, the accumulator, a proportional throttle valve, the proportional relief valve and a feeding hydraulic cylinder. A constant-pressure variable pump is used for feeding oil to one feeding area at a moment, and meanwhile, the accumulator of the feeding area is pressurized, and the accumulators of the other feeding areas are used for feeding oil. According to such a working principle of pressurizing in turn in different time periods, the pressures of the pump and accumulators are only slightly higher than a pressure needed by the respective loads, the load sensitivity is realized by the oil-feeding pressures of the feeding areas and the respective loads, and the energy loss of throttling and depressurizing of a present system is greatly reduced.

Description

technical field [0001] The invention relates to a hydraulic energy-saving shield machine hydraulic propulsion system, in particular to an energy-saving shield machine hydraulic propulsion system in which an energy accumulator is installed on the side of an oil inlet. Background technique [0002] Shield tunneling is widely used in the construction of urban subways. The hydraulic propulsion system of the shield machine is one of its important components, which plays the role of providing driving thrust, controlling earth pressure balance, controlling the driving trajectory to realize turning and deviation correction, etc. Due to the slow tunneling speed of the shield, the hydraulic propulsion system does not have a large demand for the flow of the hydraulic pump. The existing technology usually uses a hydraulic variable pump to provide propulsion power to meet the needs of all propulsion hydraulic cylinders. [0003] According to the operational requirements of excavation an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/093F15B1/02
Inventor 谢海波刘志斌段小明杨华勇
Owner ZHEJIANG UNIV