查询词典 hydraulic shield

Supporting type is suggested to be developed into 3-prop to improve adaptability besides 2-prop and 4-prop. The difference of caving difficulty degree of coal seam is the base of caving coal method at high, medium and low position. Caving with small step and open caving flashboard used widely not only cause serious mixture of coal and rock but also hinder the improvement of top coal recovery. So we suggest caving with large step or closing caving door. Four-bar-mechanism of hydraulic support restricts development of new style caving powered support. Stabilization framework of expansion link and all-shield caving tail beam at high, medium and low position are introduced here.

支架支护型式，除了两柱、四柱以外，建议开发三柱支架以改善适应性；煤层冒放性的差异，是高位、中位和低位放煤方法存在和使用的依据；目前广泛采用的小步距放煤和开放式放煤插板不仅造成严重混矸漏矸，也妨碍顶煤回收率的进一步提高，建议采用大步距放煤和可关闭放煤口；液压支架四连杆稳定机构，制约了新型放顶煤液压支架的开发，介绍了液压支架伸缩杆稳定机构及全掩护拖移高位、中位和低位放煤尾梁。

A thrust hydraulic system of shield tunnelling machine integration of pressure and flow control was designed.

摘 要：设计了一种基于压力流量复合控制的盾构推进液压系统。

A thrust hydraulic system of shield tunnelling machine was introduced.

阐述了盾构推进液压系统工作原理。

A thrust hydraulic system of shield tunnelling machine with pressure and flow compound control was designed using electro-hydraulic proportional control technology.

采用电液比例控制技术设计了一种基于压力流量复合控制的盾构推进液压系统。

In this paper, the model for thrust hydraulic system of shield tunneling machines was established and analyzed by simulated, lying on simply the thrust load of those machines.

以后通过大量工程实践和技术改进，使土压平衡盾构技术日趋完善，在技术和经济方面取得良好效果，得到了广泛应用[1]。

Structure design and control method of the cutter body system are the main problems in producing shield driven by hydraulic cylinder directly, in-depth and systemic research about these important probl.

刀盘系统的结构设计及其控制方式的研究是液压缸直接驱动盾构研制所必须解决的关键问题，本文围绕这些关键问题进行了深入的系统的研究。

This paper made use of the electro-hydraulic proportional control technology, adopting the principle of separate the ground control or grouping and unite control to control the velocity and pressure of thrust hydraulic cylinder to complete the shield machine attitude adjust in the course of its advance.

应用电液比例控制技术，采用分组联合控制的原则，控制推进液压缸的速度及压力，完成盾构推进过程中的盾构掘进姿态的调整。

An adaptive PID controller for thrust speed of a hydraulic thrust system in shield machine based on the single neuron structure was designed on the basis of the fact that the single neuron features the PID characteristics.

在分析单神经元PID特性的基础上，设计了基于单神经元的盾构推进液压系统速度自适应PID控制器。

The paper introduces the principle of the thrust hydraulic system of telescopic shield tunneling machine,and build the modle of hydraulic system in AMESim environment,basis the fact to optimum design the relevant parametre,considering the system s time-change,non-linear and the affect of complex operating contion,adopting the control alforithm of RBF Neural Network Self-tuning PID.

该文介绍了双护盾掘进机推进系统的工作原理，在AMESim环境下建立了液压系统的模型，根据实际情况对相关参数进行了优化设计，考虑到系统的时变非线性以及复杂工况的影响，采用了基于RBF神经网络自整定PID控制算法，在 MATLAB下编写了相应的S函数，通过AMESim/Sinulink与AMESim进行联合仿真分析。

In the first, the length of every poleof the leading four-bar mechanism are determined bypainting,secondly, the base of mechanic model ofsupport-surrounding, the mechanism and loads on the support isdecided. The next work, with the condition of the design, the mainmechanics of hydraulic support is analyzed and calculated by planeand spatial model. Finally, the under frame, top beam cave shield,wrists and hydraulic column are analyzed by calculation. And drawout all the process drawings.

首先，通过作图确定支架的四连杆机构各杆系的长度；然后，以力学模型为依据，分析了液压支架的顶梁、掩护梁上载荷的作用机理，得到了较为合理的支架载荷的计算公式；其次，结合设计的支架，从平面和空间两方面对支架主要结构件进行受力分析；最后对支架主要结构件、连接销轴进行强度效核，并画出所有的机械图。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。