According to the independent wheel steering device, when a wheel needs to be locked at any position, a first motor stops rotating, a second motor drives a driving gear to rotate, the driving gear drives a driven gear to rotate, and the driven gear drives a screw to rotate synchronously; the pressing assembly moves in the axial direction of the threaded rod, the second motor drives the pressing assembly to move in the axial direction of the threaded rod through the driving gear and the driven gear till the pressing assembly presses the worm, the worm and the worm gear abut against each other tightly, the meshing gap between the worm gear and the worm is eliminated, and the wheel has the capacity of being locked at any position. The relationship among the locking force, the diameter of the worm and the friction factor is defined through the locking torque calculation formula (T = Ff.d1/2) of the second motor, when the system is powered off or breaks down, the pressing assembly instantly fixes the worm through the static friction force (Ffgt, Ft), the steering shaft connected with the worm gear is prevented from accidentally deflecting, and safety is improved.
本发明公开了独立轮转向装置,当车轮需要在任意位置进行锁止时,第一电机停止转动,第二电机驱动主动齿轮转动,主动齿轮带动被动齿轮转动,被动齿轮带动螺杆同步转动,由于螺杆与压紧组件通过螺纹连接,螺杆仅做旋转运动,压紧组件沿螺杆的轴向运动,第二电机通过主动齿轮、被动齿轮带动压紧组件沿螺杆的轴向运动,直至压紧组件压紧蜗杆,使蜗杆与蜗轮紧密抵靠,消除蜗轮和蜗杆之间的啮合间隙,使车轮具备在任意位置进行锁止的能力。第二电机的锁止力矩计算公式(T=Ff·d1/2)明确锁止力与蜗杆直径及摩擦因子的关系,在系统断电或故障时,压紧组件通过静摩擦力(Ff>Ft)瞬时固定蜗杆,防止与蜗轮连接的转向轴意外偏转,提升安全性。
Independent wheel steering device
独立轮转向装置
2025-05-30
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |