The invention discloses a forklift triple hydraulic control system capable of achieving dual-mode driving, and belongs to the technical field of electric forklift hydraulic systems. An oil outlet of apump is connected with a multi-way valve; the multi-way valve is connected with a lifting cylinder, an inclined cylinder and a third oil cylinder; an oil return port of the multi-way valve is connected with a selection valve; the selection valve is connected with a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve; the first electromagnetic valve is connected with an oil inlet of the lifting cylinder; the second electromagnetic valve is connected with the inclined cylinder; the third electromagnetic valve is connected with the third oil cylinder. According to the forklift triple hydraulic control system capable of achieving dual-mode driving, a balance valve ensures stable operation of a forklift when the forklift performs forward tilting action; when a pallet fork descends, a retarding valve performs speed throttling control, and descending is stable; and when the hydraulic system in the automatic driving mode breaks down, the hydraulic system in the automatic driving mode is automatically switched to a manual driving hydraulic system.
本发明公布一种可实现双模式驾驶的叉车三联液压控制系统,属于电动叉车液压系统技术领域。泵出油口连接有多路阀,多路阀分别连接有举升缸、倾斜缸和第三油缸;多路阀的回油口连接有选择阀;选择阀连接有第一电磁阀、第二电磁阀和第三电磁阀;第一电磁阀连接举升缸的进油口;第二电磁阀连接倾斜缸;第三电磁阀连接第三油缸。本发明平衡阀在叉车进行前倾动作时,保证叉车的平稳运行;缓速阀在货叉下降时,进行速度节流控制,下降平稳;当自动驾驶模式的液压系统出现故障时,自动切换至人工驾驶的液压系统。
Forklift triple hydraulic control system capable of achieving dual-mode driving
可实现双模式驾驶的叉车三联液压控制系统
2020-09-15
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 |
Forklift hydraulic control system capable of realizing automatic driving and manual driving
European Patent Office | 2020
|