A hydraulic oil supply device for an industrial vehicle according to the present invention comprises: a first hydraulic oil tank for storing hydraulic oil; a second hydraulic oil tank for storing hydraulic oil; an upper communicating pipe communicating the upper part of the first hydraulic oil tank and the upper part of the second hydraulic oil tank; a lower communicating pipe communicating the lower part of the first hydraulic oil tank and the lower part of the second hydraulic oil tank; a first hydraulic oil pipe that connects the first hydraulic oil tank and a hydraulic oil supply target that receives the supply of hydraulic oil, and that has a suction port in the first hydraulic oil tank; a second hydraulic oil pipe which connects the hydraulic oil supply object and the second hydraulic oil tank and has a discharge port in the second hydraulic oil tank; and a hydraulic oil pump for drawing the hydraulic oil in the first hydraulic oil tank. The second hydraulic oil groove is an airtight groove which is airtight relative to the external atmosphere; the upper communication pipe has: a first open end provided in the first hydraulic oil tank; and a second opening end part which is arranged in the second hydraulic oil groove. The opening height of the first opening end part is higher than the opening height of the suction inlet; the opening height of the second opening end is higher than the opening height of the discharge port.
本发明的工业车辆的液压油供给装置包括:第1液压油槽,储存液压油;第2液压油槽,储存液压油;上部连通管,连通第l液压油槽的上部与第2液压油槽的上部;下部连通管,连通第l液压油槽的下部与第2液压油槽的下部;第l液压油配管,连通第l液压油槽与接收液压油的供给的液压油供给对象,具有第l液压油槽内的吸入口;第2液压油配管,连通液压油供给对象与第2液压油槽,具有第2液压油槽内的排出口;以及液压油泵,汲取第1液压油槽的液压油。第2液压油槽是相对于外部大气呈密闭的气密槽;上部连通管具有:第l开口端部,设置在第l液压油槽内;以及第2开口端部,设置在第2液压油槽内;第l开口端部的开口高度高于吸入口的开口高度;第2开口端部的开口高度高于排出口的开口高度。
Hydraulic oil supply device for industrial vehicle
工业车辆的液压油供给装置
2024-09-03
Patent
Electronic Resource
Chinese
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein |