| 摘要 |
<p>For certain linear actuators and for certain uses hereof it is necessary to furnish actuators with a self-locking spindle, and suffer the disadvantages connected therewith. However, by using a coil spring (20) which with a number of windings is laid around one end of the spindle (6) or a cylindrical element of the power transmission coupling for this and further arrange the spring such that it allows the spindle to rotate freely during the projecting movement but during the retracting movement applies a braking force, it is possible to make a non-self-locking spindle act as self-locking. Thereby in said situations advantage could be made of the virtues of the non-self-locking spindles. <IMAGE></p> |
