(EN)
The invention relates to a sprung mechanical device that prevents backing-off, capable of connecting or disconnecting a control hand wheel (4) and a motor acting on the same rotation spindle, comprising a cylindrical spring (7, 16), a cylinder (9, 17) mounted so that it can rotate on the rotation spindle, it being possible for the said spring to rotate with the said cylinder, the turns of the spring being in contact with the surface of the cylinder and the ends being able to come into contact with the said hand wheel. The ends of the spring (7, 16) are bent inwards or outwards, the said hand wheel (4) can act on the curvature of one or other of the ends of the spring (7, 16) and the rotation of the spring (7, 16) is limited by an end stop butting against one or other of the ends of the spring. Application to valves with manual control and motorized control fitted to fluid-carrying pipelines.
(ZH) 本发明涉及一种防倒转的弹簧式机械装置，其能够连接或释放作用于同一个旋转轴上的手工控制手轮(4)和电机，包括圆柱形弹簧(7，16)、被安装成在旋转轴上旋转的圆柱体(9，17)，所述弹簧能够与所述圆柱体一起旋转，弹簧的簧圈与圆柱体的表面接触，且其端部能够与所述手轮接触。弹簧(7，16)的端部被向内或向外弯曲，所述手轮(4)可以作用于弹簧(7，16)两端中的其中任意一个的弯曲部上，且弹簧(7，16)的转动被作用于弹簧两端的其中任意一个上的止挡限制。本发明应用于液体管道上的手工控制和电动控制阀。