The invention discloses a parking braking device for an unmanned forklift. The parking braking device comprises a parking braking control oil cylinder and a braking part communicated with the parking braking oil cylinder. The parking brake oil cylinder comprises a cylinder barrel and a piston arranged in the cylinder barrel, the piston is sleeved with a pre-compressed spring, and a limiting clamp spring is arranged on the piston. The liquid inlet end of the brake oil cylinder is connected with a parking brake valve block, and the liquid inlet end of the parking brake valve block is connected with an oil supply part. Liquid filling control of the energy accumulator is achieved through one of the hydraulic control valves of the unmanned forklift, the hydraulic control valves share an oil source with a hydraulic system of a working device, a special liquid filling control valve does not need to be arranged, and the system is simple and low in cost; in addition, leakage in the parking control valve block is smaller, the pressure maintaining time is long, liquid filling cannot be started frequently, and the influence on the action of a forklift working device is small.
本发明公开了一种无人驾驶叉车用驻车制动装置,包括驻车制动控制油缸以及与所述驻车制动油缸连通的制动部;所述驻车制动油缸包括缸筒以及设置于所述缸筒内的活塞,所述活塞上套接有预压缩的弹簧,所述活塞上设有限位卡簧;所述制动油缸的进液端连接有驻车制动阀块,所述驻车制动阀块的进液端连接有供油部。本申请使用无人驾驶叉车液压控制阀的其中一片来实现蓄能器的充液控制,与工作装置液压系统共用油源、无需设置专门的充液控制阀,系统简单、成本较低;而且本申请的驻车控制阀块内泄漏更小,保压时间长,不会频繁启动充液,对叉车工作装置的动作影响很小。
Parking braking device for unmanned forklift
一种无人驾驶叉车用驻车制动装置
2024-06-14
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 / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen |
Hydraulic parking braking system of electric forklift and electric forklift
European Patent Office | 2020
|Forward forklift and driving parking braking system thereof
European Patent Office | 2021
|