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Hydraulic direct-regulating quick response mechanism of snap load in shield propulsion system

A propulsion system and fast response technology, which is applied in mechanical equipment, fluid pressure actuators, mining equipment, etc., can solve the problems such as the difficulty of ensuring the rapid response of the system, achieve the effect of removing unreliability and improving the ability of rapid response

Inactive Publication Date: 2011-05-04
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when a common overflow valve is used as safety protection, the overflow valve is installed on the valve block, and the rapidity of system response is difficult to be guaranteed.

Method used

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  • Hydraulic direct-regulating quick response mechanism of snap load in shield propulsion system
  • Hydraulic direct-regulating quick response mechanism of snap load in shield propulsion system
  • Hydraulic direct-regulating quick response mechanism of snap load in shield propulsion system

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with drawings and embodiments.

[0015] as attached figure 1 As shown, the shield propulsion system of the present invention responds quickly to the sudden load of the hydraulic control direct adjustment mechanism, and the valve body 6 is respectively equipped with a cone valve core 5, a slide valve core 9 and a cone valve core 11, and the upper end of the cone valve core 5 is equipped with The first spring 3 and the sealing ring 2, the upper end of the spool valve core 9 is equipped with the second spring 13 and the sealing ring 14, and the two springs 3, 13 are pressed tightly with the cover plate 1; One oil discharge port T1, the first control oil port K1, the second control oil port K2, the oil outlet A, the second oil discharge port T2 and three holes 4, 7, 12; where the second control oil port K2 is It is formed by screwing the pipe thread into the valve body 6; the first oil discharge port T1 c...

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Abstract

The invention discloses a hydraulic direct-regulating quick response mechanism of a snap load in a shield propulsion system, comprising a valve body, a cone spool used for quickly responding to the snap load, a sliding spool with dual functions of voortzetting and locking, a taper spool, a ball spool and a pressure regulating spring. The hydraulic oil of the direct-regulating mechanism is directlydiverted from a hydraulic cylinder cell, thus improving the quick response ability of the propulsion hydraulic system to the snap load. As one end of the sliding spool which controls the flow direction of the hydraulic oil has certain conicity, the cell is ensured to have certain pressure when the propulsion of the system pauses, and the hydraulic cylinder is reliably locked at the original position. All the work of the direct regulating mechanism is controlled by the hydraulic oil, thus simplifying the shield propulsion electric control system, and particularly satisfying the working condition requirements of the propulsion hydraulic system of a tunneling machine.

Description

technical field [0001] The invention relates to a fluid pressure control mechanism, in particular to a hydraulic control direct adjustment mechanism with rapid response to abrupt load of a shield propulsion system. Background technique [0002] The propulsion system is an important part of the shield boring machine. The geological conditions encountered in the process of shield tunneling are complex and changeable, so the load on the propulsion system is also variable and uncertain. The actuator of the propulsion system is a group of hydraulic cylinders distributed along the circumference of the shield section. Therefore, the ability of the propulsion hydraulic system to adapt to sudden loads has become an important guarantee for the normal and reliable excavation of the shield. [0003] Since the installation position of the control valve block of the shield propulsion hydraulic system is usually far away from the oil inlet of the hydraulic cylinder, the two are connected ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/093F15B13/042
Inventor 杨华勇施虎龚国芳汪慧
Owner ZHEJIANG UNIV
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