The invention relates to a three-way stacking type forklift hydraulic system which comprises an oil pump, an oil tank, a motor for driving the oil pump, a gantry lifting oil cylinder for driving a gantry to lift, a pallet fork lifting oil cylinder for driving a pallet fork to lift, a pallet fork lateral movement motor for driving the pallet fork to laterally move and a pallet fork rotating oil cylinder for driving the pallet fork to rotate. A first working oil port of the system reversing valve is connected with a portal lifting oil cylinder, a second working oil port of the system reversing valve is connected with a pallet fork lifting oil cylinder, a pallet fork lateral movement motor and a pallet fork rotating oil cylinder which are connected in parallel, and a pallet fork lifting switch valve is arranged between the pallet fork lifting oil cylinder and the system reversing valve. A lateral movement reversing valve is arranged between the pallet fork lateral movement motor and the system reversing valve, and a rotary reversing valve is arranged between the pallet fork rotary oil cylinder and the system reversing valve. Combined lifting of the portal and the pallet fork is achieved through a system reversing valve, all functional modules are integrated in the system, lifting, lateral moving and rotating of the pallet fork are achieved, the structure of a hydraulic system is simplified, and the safety of the system is improved.
本发明一种三向堆垛式叉车液压系统,包括油泵、油箱、驱动油泵的电机、驱动门架起升的门架升降油缸、驱动货叉起升的货叉升降油缸、驱动货叉侧移的货叉侧移马达和驱动货叉旋转的货叉旋转油缸,油泵连接系统换向阀的进油口,系统换向阀的第一工作油口连接门架升降油缸,系统换向阀的第二工作油口分别连接相互并联的货叉升降油缸、货叉侧移马达和货叉旋转油缸,货叉升降油缸和系统换向阀之间设置有货叉升降开关阀,货叉侧移马达和系统换向阀之间设置有侧移换向阀,货叉旋转油缸和系统换向阀之间设置有旋转换向阀。通过系统换向阀实现门架和货叉的联合起升,系统内集合各功能模块,实现货叉的起升、侧移和旋转,简化液压系统结构,提升系统安全性。
Three-way stacking type forklift hydraulic system
一种三向堆垛式叉车液压系统
2022-03-15
Patent
Electronic Resource
Chinese
IPC: | F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / 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 |
Side shifting device of forklift and three-way stacking forklift
European Patent Office | 2021
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