防爆柴油机混凝土搅拌运输车的下坡速度优化设计  

Optimization design of downhill speed of explosion-proof diesel engine concrete mixing truck

作　　者：张迈 Zhang Mai(Laizhou Yatong Heavy Equipment Co.,Ltd.,Laizhou 261400,China)

机构地区：[1]莱州亚通重型装备有限公司,山东莱州261400

出　　处：《煤炭与化工》2024年第12期95-98,共4页Coal and Chemical Industry

摘　　要：因煤矿巷道高度限制,防爆柴油机混凝土搅拌运输车采用闭式液压系统进行传动,在实际使用过程中,存在松开油门踏板时车辆突然降速以及制动时出现异响的问题。针对这一情况,本文通过对车辆进行故障分析和液压原理分析,发现问题源于车速降速过快、驾驶员操作不规范以及车桥内螺纹胶融化导致的固定螺栓松动。为解决这些问题,提出了优化变量泵阻尼孔、增加具有单向卸压的集成阀组和增加稳速功能等解决方案。经过现场测试,这些方案有效改善了车辆的下坡行驶性能,提高了驾驶舒适性和安全性。Due to the height limitation of coal mine roadway,the explosion-proof diesel engine concrete mixing truck is driven by closed hydraulic system.In the actual use process,there are problems of sudden deceleration when the accelerator pedal is loosened and abnormal noise when braking.In view of this situation,this paper analyzes the fault analysis and hydraulic principle of the vehicle,and finds that the problem stems from the excessive speed reduction,the irregular operation of the driver and the loosening of the fixed bolts caused by the melting of the internal thread glue of the axle.In order to solve these problems,solutions such as optimizing the damping hole of the variable pump,increasing the integrated valve group with one-way pressure relief and increasing the speed stabilization function are proposed.Through field tests,these schemes effectively improve the downhill driving performance of vehicles,and improve driving comfort and safety.

关 键 词：煤矿井下辅助运输 制动异响 结构优化 

分 类 号：TD52[矿业工程—矿山机电]