The all-electric dual-redundancy emergency receiving electric actuator provided by the invention is safe, reliable and good in fault-tolerant capability. According to the technical scheme, main motors and auxiliary motors are arranged at the free end of a piston cylinder assembly, the main motors and the auxiliary motors are mutually backed up, and output gears of the auxiliary motors are engaged with barrel end gears of lead screw sleeves assembled in the piston cylinder assembly through auxiliary transmission gears; a flange ring of a lead screw sleeve extending into an inner ring hole of a step of a piston head is restrained on an end ring of a terminal bearing, the lead screw sleeve is sleeved with a lead screw nut which does telescopic motion in a motion cavity of the lead screw sleeve, and the lead screw nut is sleeved with a lead screw pair extending into the piston head and is fixedly connected with a guide rail along the bottom end of an outer cylinder. The piston cylinder assembly is driven to do push-pull stroke linear motion in the outer cylinder inner step constraint motion cavity, the main motor drives the lead screw pair to be meshed with the lead screw nut to rotate, or the auxiliary motor drives the lead screw sleeve to be meshed with the lead screw nut to rotate, the piston cylinder assembly is pushed to move in the EMA outer cylinder motion cavity, and two relatively independent dual-redundancy emergency retracting and releasing transmission chains are arranged.
本发明提出的一种全电双余度应急收机电作动器,安全可靠,容错能力好。采用如下技术方案实现:活塞筒组件自由端上设有相向对称主电机,与主电机互为备份的副电机,副电机输出齿轮通过副传动齿轮啮合装配在活塞筒组件中的丝杠套筒筒端齿轮,将伸入活塞头台阶内环孔中的丝杠套筒翻边环约束在终端轴承的端环上,丝杠套筒套合在其运动腔作伸缩运动的丝杠螺母,丝杠螺母套合伸入活塞头的丝杠副沿着外筒底端固联导向轨道,带动活塞筒组件在外筒内台阶约束运动腔中作推拉行程直线运动,形成主电机带动丝杠副啮合丝杠螺母旋转,或副电机带动丝杠套筒啮合丝杠螺母旋转,推动活塞筒组件在EMA外筒运动腔中运动,具有两条相对独立的双余度应急收放传动链。
All-electric dual-redundancy emergency retractable electromechanical actuator
全电双余度应急收放机电作动器
2023-05-05
Patent
Electronic Resource
Chinese
European Patent Office | 2023
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