The invention relates to a rotary valve and a hydraulic steering gear. The rotary valve comprises a valve sleeve, a valve element and an anti-backlash assembly. The valve sleeve is connected with the steering gear and is provided with a working channel extending in the axial direction of the valve sleeve, and the inner wall of the working channel is concavely provided with a mounting hole channel outwards in the radial direction of the valve sleeve; the valve element is used for being connected with a steering wheel rotating shaft, a fixing channel allowing a torsion bar to penetrate through is formed in the axial direction of the valve element, the valve element can rotate around the axial direction of the valve sleeve to be arranged in the working channel, and an oil conveying channel located on the opposite side of the mounting hole channel is arranged between the valve sleeve and the valve element. The clearance eliminating assembly comprises an elastic piece and a ball which are arranged in the mounting hole channel and sequentially arranged in the direction close to the valve element, the ball has the moving stroke close to and away from the valve element, and the elastic piece is used for driving the ball to move in the direction close to the valve element. The situation that hydraulic oil flows randomly due to the fact that the rotating valve generates a rotating gap can be avoided, so that accurate steering of wheels is guaranteed, and meanwhile normal and smooth work can be achieved between the valve element and the valve sleeve.
本发明涉及一种转阀及液压转向器,转阀包括阀套、阀芯及消隙组件;阀套用以连接转向齿轮,且具有沿自身轴向方向延伸设置的工作通道,工作通道的内壁沿阀套的径向向外凹设有安装孔道;阀芯用以连接方向盘转轴,且沿自身轴向设有供扭杆穿设的固定通道,阀芯能够绕阀套的轴向转动设于工作通道,且阀套与阀芯之间设有位于安装孔道对侧的输油通道;消隙组件包括设于安装孔道、且沿靠近阀芯的方向依次设置的弹性件及滚珠,滚珠具有靠近及远离阀芯的活动行程,弹性件用以驱动滚珠向靠近阀芯的方向活动。本发明能够避免转阀产生旋转间隙而导致液压油流动随意,从而保证车轮的精准转向,同时使得阀芯与阀套之间能够正常顺畅工作。
Rotary valve and hydraulic steering gear
一种转阀及液压转向器
2023-02-03
Patent
Elektronische Ressource
Chinesisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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