The invention discloses a high-sensitivity electric recirculating ball steering gear and aims to solve the problems that the radial force of a ball screw in an existing steering gear cannot be completely offset, friction is increased and sensitivity is insufficient. According to the invention, an innovative combination design of hydraulic active radial force balance, a self-adaptive piston piece and a closed-loop hydraulic control system is adopted; the high-pressure liquid in the oil storage tank acts on the piston piece, so that the piston piece slides in the guide groove to balance the radial force generated by the nut tooth shape, and the stress of the ball screw is effectively reduced; the self-adaptive piston piece is of a double-layer structure, a miniature spring piece is embedded in the middle, contact pressure can be adjusted in real time according to hydraulic pressure changes, friction is reduced, and durability is enhanced. In addition, torque signals of the input shaft are detected through the sensor, the electric control pump dynamically adjusts the hydraulic oil pressure, and real-time radial force balance is achieved. The invention has the advantages of high sensitivity, low friction and high durability, and is particularly suitable for commercial vehicle markets with higher requirements on high-precision steering control.
本发明公开了一种高灵敏型电动循环球转向器,旨在解决现有转向器中滚珠丝杠径向力无法完全抵消、摩擦增大及灵敏性不足的问题。本发明采用液压主动径向力平衡、自适应活塞片及闭环液压控制系统的创新组合设计;通过储油罐中的高压液体作用于活塞片,使活塞片在导向槽内滑动,以平衡螺母齿形产生的径向力,从而有效降低滚珠丝杠的受力;自适应活塞片采用双层结构,中间嵌入微型弹簧片,可根据液压压力变化实时调节接触压力,以减少摩擦并增强耐用性;此外,通过传感器检测输入轴的扭矩信号,电控泵动态调节液压油压力,实现实时径向力平衡;本发明具备高灵敏度、低摩擦及高耐久性,特别适用于对高精度转向控制需求较高的商用车市场。
High-sensitivity electric recirculating ball steering gear
一种高灵敏型电动循环球转向器
11.04.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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