The invention discloses a hydraulic steering device and an all-terrain vehicle hydraulic steering system, a steering gear 6 of the hydraulic steering device adjusts displacement through a steering gear variable control cylinder 9, and the steering gear variable control cylinder 9 is controlled by an electric proportional two-position three-way reversing valve 11. The opening degree of an oil way in the electric proportional two-position three-way reversing valve 11 is controlled by an electric signal obtained after the vehicle speed is converted, and when the vehicle speed is increased, the displacement of the steering gear 6 is reduced; when the vehicle speed is reduced, the displacement of the steering gear 6 is increased, the outlet of the variable pump 1 is connected into the steering oil way switching valve 7 through the one-way valve 4, and the steering oil way switching valve 7 is connected with the steering gear 6 and the steering oil cylinder 3. Aiming at the problem that a hydraulically-driven all-terrain vehicle is prone to rollover and drifting during steering at a high speed, the invention provides a hydraulic steering control system capable of associating the vehicle speed with steering wheel angle control, and the control proportion of the steering wheel angle and the whole vehicle angle is adjusted according to the vehicle speed.

    本发明公开了一种液压转向装置及全地形车液压转向系统,液压转向装置的转向器6通过转向器变量控制缸9调节排量,转向器变量控制缸9由电比例两位三通换向阀11控制,电比例两位三通换向阀11阀内油路的开口量由车速转换后的电信号控制,当车速提高时,转向器6的排量降低;当车速降低时,转向器6的排量提高,变量泵1的出口经单向阀4接入转向油路切换阀7,转向油路切换阀7联接转向器6和转向油缸3。本发明针对液压驱动的全地形车在高速下转向容易侧翻和甩尾的问题,提供了一种可以将车速和方向盘转角控制关联起来的液压转向控制系统,根据车速调整方向盘转角和整车转角的控制比例。


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    Title :

    Hydraulic steering device and all-terrain vehicle hydraulic steering system


    Additional title:

    一种液压转向装置及全地形车液压转向系统


    Contributors:
    XIA ZISHENG (author) / WEI TIANSHAN (author) / YANG QIANG (author)

    Publication date :

    2023-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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