摘要液压支架是综采工作面的三大设备之一，根据其特点和围岩与围岩之间的相互作用关系，可分为三种：支护液压支架、掩护式液压支架和支架式液压支架。图1-1型掩护式液压支架。液压支架主要由连接杆、梁、柱、底座、各种控制阀、管道等组成。顶梁支护顶板，防止漏煤矸石冒落。顶梁与底座之间有四个双作用缸支架。为了延长支架的工作范围，还提供了一个机械加长连接杆。有的支架还设计了盾构梁、盾构梁采用钢板焊接箱形结构，并将前端的下端、连接杆与底座连接成四连杆机构，液压支架和液压支架的防护中心和防止围岩的工作面效果。它不仅能保证支护梁的间距和煤层的基本恒定，也能承受水平构件的支架，保证支护的稳定性。底座是由钢板焊接而成的箱形结构，由四根立柱组成。耳朵是焊接在连接安装在千斤顶的前端，在杰克和工作面运输机械的另一端连接，通过液压支架推移千斤顶延伸，推动滑移架行走运动[ 4 ]。76451

采煤时，大量的液压支架排成排，根据实际环境的地下，一个综采工作面的需要，需要支持80至160。根据生产要求，液压支架可以完成支架的支撑、起升、滑动、动、过载等一系列动作的保护，实现高效、安全的生产。由于矿井火灾和爆炸的要求,高水基乳液作为媒介来传输液压支架的压力。通过高水基乳液在一系列的管流液压系统和控制组件,实现能量传递和转换。控制阀、安全阀和液压控制阀依照本法规定顺序提取过程的需求,促进液压支架的运动,满足施工需要的综采工作面。液压支架不仅可以维持正常工作工作空间的地下工作者,当顶板事故,也要保护,包括人员和设备安全的重要作用。

该论文有图44幅，表2个，参考文献52篇。

毕业论文关键词：液压支架;液控单向阀；Fluent

Design of Hydraulic-controlledNon-return Value with Large Flow in Hydraulic Support

Abstract Comprehensive mechanized coal winning technology plays an important role in building a mine, the production efficiency is high, the safety of the hydraulic support is a major mining equipment。 Unloading of stents, hydraulic control check values reverse hair open, so a lot of inferior vena high water-based emulsion and rapid overflow, stents, unloading。 But the unloading process, the system will have a huge impact, high impact pressure is not only bad, will also have all kinds of hydraulic equipment, will lead to pipeline interface fracture, so high pressure emulsion spray and casualties。 The lack of theory and design method of backward, there is a big gap in the hydraulic control check the product value and large flow between at home and abroad。 In this paper, the design method of with large flow hydraulic support hydraulic control check value will study to improve the quality and performance with large flow hydraulic control check value。 In this paper, main work is as follows。      A two-dimensional model is established first in AutoCAD software according to the characteristic of the structure and working principle。 Kinematics and dynamics model of liquid valve after road can use fluent software for numerical simulation。     Then with a big flow of the hydraulic control check the value of the new testing system for testing。 We can get the process with large flow hydraulic control check value and its dynamic characteristics of the test results。 Through the test results, we can evaluate the performance of the design of hydraulic control check values, and improve the design work of the valve。 Analysis design method of hydraulic control check values with big traffic system by establishing the model, simulation and verification test results, the design of theoretical significance and practical value and large flow hydraulic control check value。