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An electro-hydraulic control system for rotary motion of a shield segment assembly machine

An electro-hydraulic control system and rotary motion technology, applied in mechanical equipment, fluid pressure actuating devices, servo motors, etc., can solve problems such as large impact torque and impact oscillation, reduce the maximum impact torque, eliminate oscillatory impact, reduce The effect of small shocks

Inactive Publication Date: 2018-05-01
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the defects existing in the prior art, the object of the present invention is to provide an electro-hydraulic control system for the rotary motion of the segment assembly machine. shock vibration problem

Method used

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  • An electro-hydraulic control system for rotary motion of a shield segment assembly machine
  • An electro-hydraulic control system for rotary motion of a shield segment assembly machine
  • An electro-hydraulic control system for rotary motion of a shield segment assembly machine

Examples

Experimental program
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Effect test

Embodiment

[0039] Set the rotating speed of the segment assembly machine to 6r / min, and the signal is a step signal, using AMESim software to establish figure 1 The model is simulated, and the parameters K are set to control it P = 1,K I =360, so

[0040]

[0041] Then the variable speed integral proportional integral controller parameters at the kth moment: proportional action constant 1, integral action constant f[e(k)]×360.

[0042] The speed response and impact torque of the rotary motion electro-hydraulic control system of the above-mentioned shield segment assembly machine are as follows: figure 2 and image 3 As shown, the figure shows the comparison with the existing technology, from figure 2 It can be seen that the present invention eliminates the system overshoot, but the adjustment time increases; from image 3 It can be seen from the figure that the present invention eliminates the vibration impact in the start-up phase, and the maximum impact is greatly reduced; ...

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Abstract

The invention discloses a rotary motion electrohydraulic control system for a shield segment erector. The rotary motion electrohydraulic control system comprises a motor, a metering pump, an overflow valve A, an oil tank, a three-position four-way proportional directional valve, a hydraulic motor, a speed sensor, a first balance valve, a second balance valve, a first energy accumulator, a second energy accumulator, a first overflow valve B, a second overflow valve B and a variable-speed-integral proportional-integral controller. An oil suction opening of the metering pump is connected with the oil tank. Oil outlets are connected with the overflow valve A and an oil inlet of the three-position four-way proportional directional valve. Two oil outlets of the three-position four-way proportional directional valve are connected with the first balance valve and the second balance valve, and the control end is controlled by the variable-speed-integral proportional-integral controller. The first overflow valve B and the second overflow valve B are connected to pipelines on the two sides of the hydraulic motor correspondingly. The stability of the rotary motion electrohydraulic control system is improved through variable-speed-integral proportional-integral control, and oscillatory surge at the starting stage is eliminate through the ability of the energy accumulators for absorbing flow pulsation.

Description

technical field [0001] The invention relates to a fluid pressure actuator, in particular to an electro-hydraulic control system for the rotary motion of a shield segment assembly machine. Background technique [0002] The shield machine is a large and complex equipment integrating opto-mechanical-electric-hydraulic integration for tunnel excavation and forming, which completes excavation, ballast removal, lining and other excavation operations under the cover of a movable steel structure shield, and can realize complex geological conditions and multi-site Automatic and factory-like tunneling operations in extreme underground environments such as coupling, using shield machines to excavate tunnels has the advantages of fast footage, short construction period, low impact on the environment, and high comprehensive economic benefits. It is currently the main method for tunnel construction at home and abroad. choose. [0003] The segment assembly machine is a key part of the shi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B1/04F15B11/08F15B11/04
CPCF15B1/04F15B11/04F15B11/08
Inventor 孙伟杜家楠王林涛宋学官李震
Owner DALIAN UNIV OF TECH
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