摘要
为了实现巷道超前支护液压支架(以下简称“超前支架”)快捷进出试验台,研制了超前支架试验搬运车。该车是一种靠自身动力通过无线遥控行走的搬运设备。通过合理匹配电池电源、液压驱动及电气控制系统,实现大驱动力、无线远程控制。利用导向机构避免方向调整误差驶入超长T型周转台下面时正向碰撞,降低了驾驶难度;同步液压油缸提升系统采用压力自平衡同步液压马达,最大限度减小同步误差,保证被试支架精准定位;通过压力自平衡阀使得每条油缸行程能完全缩回,避免物件运输中颠簸倾斜,回路安装平衡阀避免重载放下时抖动和冲击;采用液压马达驱动双支撑减速轮系统行驶,负载能力强、扭矩大,采用液压自动制动系统驻车制动置于一体;采用双伸缩液压油缸转向机构转向,转向力大;为了重载的需要采用钢制轮,并且解决转向和导向机构对轮的侧向受力的要求;定轮组设计可以预防陷入T型凹槽的问题。结果表明,搬运车解决了目前使用拖拽方法的弊端,对于减人增安、提高试验效率具有重要作用。
In order to realize the quick access of the tunnel advance support hydraulic support(hereinafter referred to as“advance support”)to the test bench,the advance support test cart was developed.This vehicle is a transportation device that relies on its own power and travels through wireless remote control.By properly matching battery power,hydraulic drive,and electrical control systems,achieve high drive power and wireless remote control.Utilizing a guiding mechanism to avoid directional adjustment errors when driving under an ultra long T-shaped turnover platform,reducing driving difficulty.The synchronous hydraulic cylinder lifting system adopts a pressure self-balancing synchronous hydraulic motor to minimize synchronization error and ensure accurate positioning of the tested bracket.By using a pressure self-balancing valve,each cylinder stroke can be fully retracted,avoiding bumps and tilting during object transportation.The circuit was equipped with a balancing valve to avoid shaking and impact during heavy load lowering.Adopting a hydraulic motor driven dual support reduction wheel system for driving,with strong load capacity and high torque,and adopting a hydraulic automatic braking system for parking brake integration.Adopting a dual telescopic hydraulic cylinder steering mechanism for steering,with high steering force.Steel wheels were used for heavy loads and to meet the lateral force requirements of the steering and guidance mechanisms on the wheels.The design of the fixed wheel group solved the problem of preventing it from getting stuck in the T-shaped groove.The results showed that the cart solved the drawbacks of the current drag method,and played an important role in reducing the number of people and increasing the safety,and improving the efficiency of the test.
作者
梁二君
杨建新
LIANG Erjun;YANG Jianxin(CCTEG China Coal Research Institute,Beijing 100013,China)
出处
《煤矿机电》
2023年第4期71-76,共6页
Colliery Mechanical & Electrical Technology
关键词
搬运车
液压系统
电池驱动
钢轮
双支撑驱动轮
支架试验台
同步液压马达
cart
hydraulic system
battery driven
steel wheel
dual support drive wheel
support test bench
synchronous hydraulic motor
