The invention relates to the technical field of forklift gantry control and adjustment, and provides an automatic leveling device for a forklift gantry. The automatic leveling device comprises a fixing block, a hydraulic cylinder, a rotating shaft, a first connecting rod, a second connecting rod, a rotation angle sensor and a controller. During working, when the gantry inclines forwards or backwards under the action of a piston rod of the hydraulic cylinder and a fixing block, the first connecting rod is driven to swing, and the first connecting rod drives the second connecting rod to rotate around the rotating shaft; and the rotation angle sensor and the rotating shaft rotate coaxially to generate a rotation angle signal, the rotation angle signal is transmitted to the controller, and thecontroller sends an instruction to a hydraulic control system of the hydraulic cylinder according to the actual condition. In the process, the forward inclination rotation angle and the backward inclination rotation angle of the gantry can be converted and amplified through swinging of the first connecting rod and the second connecting rod, so that the rotation angle of the rotation angle sensoris large; and in the way, the rotation range of the rotation angle sensor is large, the formed rotation angle signal threshold value is wide, the controller can control the action of the gantry more accurately, the requirements on the rotation angle sensor and the controller are low, and the cost is low.
本发明涉及叉车门架控制及调节技术的领域,提供叉车门架自动调平装置,包括固定块、液压缸、转轴、第一连杆、第二连杆、转角传感器及控制器。工作时,当门架在液压缸活塞杆和固定块的作用下向前倾或后倾时,将带动第一连杆摆动,第一连杆带动第二连杆绕着转轴转动,转角传感器与转轴同轴转动而生成转角信号,并将转角信号传送至控制器,控制器再根据实际情况向液压缸的液压控制系统发出指令。在这一过程中,门架前倾和后倾的转角会经过第一连杆和第二连杆的摆动而转换放大,使得转角传感器的转动角度较大,这样,转角传感器的转动范围大,形成的转角信号阈值较广,控制器能够更精确控制门架的动作,且对转角传感器和控制器要求低,成本低。
Automatic leveling device for forklift gantry
叉车门架自动调平装置
2020-05-08
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 |
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