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Cutterhead closed type hydraulic drive system adopting revolving speed-variable and displacement-variable compound control

A composite control and closed cutter head technology, which is applied in mining equipment, earthwork drilling, tunnels, etc., can solve the problems of slow system response and limited cutter head speed adjustment range, and achieve fast response, increased speed range, and good performance. vibration effect

Inactive Publication Date: 2011-02-09
ZHEJIANG UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of slow system response and limited cutterhead speed regulation range in the existing shield cutterhead system during the construction process, and to provide a closed hydraulic cutterhead with variable speed and variable displacement compound control. Drive System

Method used

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  • Cutterhead closed type hydraulic drive system adopting revolving speed-variable and displacement-variable compound control
  • Cutterhead closed type hydraulic drive system adopting revolving speed-variable and displacement-variable compound control

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Embodiment Construction

[0016] The purpose and effects of the present invention will become more apparent by describing the present invention in detail below with reference to the accompanying drawings.

[0017] Such as figure 1 As shown, the cutter head closed hydraulic drive system with variable speed and variable displacement compound control of the present invention includes: high pressure accumulator 1, low pressure accumulator 2, two-position four-way cartridge valve 3, first pressure gauge 4.1, second Two pressure gauges 4.2, first pressure sensor 5.1, second pressure sensor 5.2, first filter 6.1, second filter 6.2, frequency converter and first motor 7, first coupling 8, two-way variable pump 9, electromagnetic Stop valve 10, first safety valve 11.1, second safety valve 11.2, first one-way valve 12.1, second one-way valve 12.2, third one-way valve 12.3, fourth one-way valve 12.4, fifth one-way valve 12.5 , sixth one-way valve 12.6, proportional relief valve 13, shuttle valve 14, motor group ...

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Abstract

The invention discloses a cutterhead closed type hydraulic drive system adopting revolving speed-variable and displacement-variable compound control. In the invention, a main oil line adopts a pump control motor closed type system taking revolving speed-variable control as first class speed-regulating control and displacement-variable speed-regulating control as second class speed-regulating control, thereby having good frequency variable speed-regulating energy-saving effects and high efficiency; the displacement-variable pump control motor closed type system reduces the overflow loss and the throttling loss, enhances the efficiency of the system and can also ensure a frequency variable speed-regulating range to exceed the limit of the limiting revolving speed of a pump; because the cutterhead has wide revolving speed range and large power variation range, the speed-regulating range of the cutterhead is widened through revolving speed-variable and displacement-variable compound control; the bi-directional pressure of the cutterhead can be regulated continuously through the combination of a one-way valve and a proportional overflow valve; and the impact shock of the oil liquid of the system can be absorbed through the installation of energy accumulators positioned on both ends of a variable pump, therefore the installed power of the system is reduced.

Description

Technical field [0001] The invention relates to a fluid pressure actuator, in particular to a closed-type energy-saving hydraulic control system for a shield cutter head adopting variable speed and variable displacement combined control. 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 technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/02E21D9/093
Inventor 龚国芳周如林汪慧刘怀印应群伟
Owner ZHEJIANG UNIV
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