The invention discloses a chassis hydraulic system and engineering machinery, the chassis hydraulic system comprises an oil supply device, a steering hydraulic drive device and a floating hydraulic drive device, the oil supply device is arranged independent of an upper vehicle hydraulic system and comprises an electric oil pump and a hydraulic oil tank which are both arranged on a chassis, and the hydraulic oil tank provides oil for the electric oil pump; the steering hydraulic drive device comprises a steering oil way and a first steering oil cylinder in driving connection with the steering mechanism, the first steering oil cylinder is provided with a rod cavity and a rodless cavity, and the steering oil way selectively guides oil pumped by the electric oil pump to one of the rod cavity and the rodless cavity. The floating hydraulic drive device comprises a floating oil way and a floating oil cylinder connected with the floating mechanism in a driving mode, the floating oil way can guide the oil pumped by the electric oil pump into the floating oil cylinder, and therefore the purposes of reducing pressure loss and reducing energy consumption can be achieved. And the energy-saving requirement of the electrically-driven vehicle is met.
本发明公开了一种底盘液压系统及工程机械,底盘液压系统包括供油装置、转向液驱装置和浮动液驱装置,供油装置独立于上车液压系统设置并包括均设于底盘上的电动油泵和液压油箱,液压油箱给电动油泵提供油液,转向液驱装置包括转向油路以及与转向机构驱动连接的第一转向油缸,第一转向油缸具有有杆腔和无杆腔,转向油路可选择地将电动油泵泵送的油液导向有杆腔和无杆腔中的其中一者,以及对应地将有杆腔和无杆腔中的另一者中的油液导向液压油箱,浮动液驱装置包括浮动油路以及与浮动机构驱动连接的浮动油缸,浮动油路可将电动油泵泵送的油液导向浮动油缸内,从而可以达到了减小压力损失、降低能耗的目的,实现电驱车辆的节能需求。
Chassis hydraulic system and engineering machinery
底盘液压系统及工程机械
2024-07-12
Patent
Electronic Resource
Chinese
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