A lifting and leveling system for a cross arm auxiliary aerial work platform comprises a power unit, a control unit and an execution unit. The power unit comprises a coupler connected with an engine flywheel, a hydraulic pump driven by the coupler and an oil tank connected with an oil inlet of the hydraulic pump. The execution unit comprises a leveling oil cylinder, a fly boom variable-amplitude oil cylinder and a swing cylinder; the control unit comprises a multi-way valve, an overpressure protection device, a pressure stabilizing device, an electric control reversing valve and a back pressure valve, the multi-way valve comprises a first linkage valve, a first electromagnetic reversing valve and a second electromagnetic reversing valve, the first electromagnetic reversing valve is connected with the leveling oil cylinder through the overpressure protection device and the pressure stabilizing device in sequence and used for controlling the leveling oil cylinder to act, and the second electromagnetic reversing valve is connected with the second linkage valve. The second electromagnetic reversing valve is connected with the fly boom variable-amplitude oil cylinder and the swing cylinder through the electric control reversing valve and used for controlling swing of the swing cylinder and variable-amplitude action of the fly boom variable-amplitude oil cylinder, the posture of the working platform can be accurately controlled, and operation and maintenance are convenient.
一种用于横担辅助高空作业平台的举升调平系统,包括动力单元、控制单元和执行单元;动力单元包括与发动机飞轮连接的联轴器、通过联轴器驱动的液压泵和与液压泵的进油口连接的油箱;执行单元包括调平油缸、飞臂变幅油缸和摆动缸;控制单元包括多路阀、超压保护装置、稳压装置、电控换向阀和背压阀,多路阀包括首联阀、第一电磁换向阀和第二电磁换向阀,第一电磁换向阀依次通过超压保护装置以及稳压装置与调平油缸连接,用于控制调平油缸动作,所述第二电磁换向通过电控换向阀分别与飞臂变幅油缸和摆动缸连接,用于控制摆动缸的摆动和飞臂变幅油缸的变幅动作,本发明可对工作平台姿态的精确控制,便于操作和维护。
Lifting and leveling system for cross arm auxiliary aerial work platform
用于横担辅助高空作业平台的举升调平系统
2024-12-06
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 |
Platform leveling system, aerial work platform and aerial work machine
European Patent Office | 2023
|Hydraulic leveling device, hydraulic leveling method and aerial work platform
European Patent Office | 2025
|