The utility model relates to a hydraulic system for hydraulic lifting and hydraulic steering of a new energy mine dump truck. The oil tank is connected with an oil supply pipe through a butterfly valve, in which an air filter is arranged on the oil tank, and a main pump and an emergency pump are connected in parallel with the oil supply pipe. Then, the main pump and an emergency pump are combined through a confluence valve, followed by a priority valve and a priority valve. Diversion to the steering and reversing valves, where the steering output to the steering system; reversing valve output to the lifting system; the return oil of the steering system and lifting system is returned to the tank through the return pipe and the confluence block, the return oil filter; and there is also a relief valve between the supply pipe and the return oil pipe between the priority valve and the reversing valve. The utility model has two hydraulic systems driven by an oil pump, and the function of the relief valve one will provide a stable lifting pressure for the hydraulic lifting system, so as to avoid causing excessive pressure damage to the hydraulic lifting system.
【技术实现步骤摘要】
新能源矿用自卸车液压举升和液压转向的液压系统
本技术涉及矿用自卸车液压举升和全液压转向,具体是新能源矿用自卸车液压举升和液压转向的液压系统。
技术介绍
现有矿用车全液压转向系统和液压举升系统为两个系统,需要两个动力源即两个液压泵分别驱动两个系统,对新能源车来说,必须用两个电机带动两个泵,且需要两个电机控制器,空间布局困难,成本高。
技术实现思路
本技术基于永磁电机转速可变可控的特点和两个液压系统的工况,通过优化液压系统,实现一个电机带动一个泵驱动两个液压系统,具体是新能源矿用自卸车举升和转向液压系统。为此本技术的技术方案为,新能源矿用自卸车液压举升和液压转向的液压系统,包括油箱,所述的油箱通过蝶阀连接有供油管,其中油箱上设有空气滤清器,其特征在于:在所述的供油管上并联设有主泵和应急泵,然后通过合流阀合流,合流阀后又设有优先阀,优先阀再分流至转向器和换向阀,其中转向器输出至转向系统;换向阀输出至举升系统;转向系统和举升系统的回油通过回油管和汇流块、回油过滤器回至油箱;在优先阀和换向阀之间的供油管和回油管之间还设有溢流阀一。进一步的改进在于:转向器和优先阀之间还连接有负载传感接入口LS。进一步的改进在于:换向阀和举升油缸之间还设有反跳阀。进一步的改进在于:反跳阀和举升系统的回油管之间还设有溢流阀二。有益效果:本技术中采用主泵和应急转向泵在供油回路上并联,起到供油作用,再通过优先阀的分配至转向器和换向阀,自卸车液压转向系统和液压举升系统都能共用一个油泵工作,即可实现一个油泵供油驱动两个液压系统;溢流阀一的作用将为液压举升系统提供稳定的举升压力,免得造成压力过大损坏液 ...
【技术保护点】
1.新能源矿用自卸车液压举升和液压转向的液压系统,包括油箱,所述的油箱通过蝶阀连接有供油管,其中油箱上设有空气滤清器,其特征在于:在所述的供油管上并联设有主泵和应急转向泵,然后通过合流阀合流,合流阀后又设有优先阀,优先阀再分流至转向器和换向阀,其中转向器输出至转向油缸;换向阀输出至举升油缸;转向油缸和举升油缸的回油通过回油管和汇流块、回油过滤器回至油箱;在优先阀和换向阀之间的供油管和回油管之间还设有溢流阀一。
【技术特征摘要】
1.新能源矿用自卸车液压举升和液压转向的液压系统,包括油箱,所述的油箱通过蝶阀连接有供油管,其中油箱上设有空气滤清器,其特征在于:在所述的供油管上并联设有主泵和应急转向泵,然后通过合流阀合流,合流阀后又设有优先阀,优先阀再分流至转向器和换向阀,其中转向器输出至转向油缸;换向阀输出至举升油缸;转向油缸和举升油缸的回油通过回油管和汇流块、回油过滤器回至油箱;在优先阀和换向阀之间的供油管和回油...
【专利技术属性】
技术研发人员:黄星光,徐纯华,刘玉林,肖海峰,朱晓鑫,
申请(专利权)人:东风重工十堰有限公司,
类型:新型
国别省市:湖北,42
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