Mechanical self-locking device of lead screw equipment and electric cylinder

The utility model relates to a mechanical self-locking device of lead screw equipment and an electric cylinder, the lead screw equipment comprises a ball screw, a friction ring and a gear, the gear is used for driving a lead screw shaft of the ball screw to rotate, the friction ring is connected with the gear, and the friction ring is connected with the gear. The friction ring is used for controlling the rotation of the ball screw; the mechanical self-locking device comprises a thrust plane bearing; and the thrust plane bearing is arranged between the gear and the friction ring. Therefore, the shaft end mechanical self-locking of the ball screw can be realized without relying on electromagnetism or other self-locking. 本实用新型涉及一种丝杠设备的机械自锁装置及电动缸，一种丝杠设备的机械自锁装置，所述丝杠设备包括滚珠丝杠、摩擦环以及齿轮，所述齿轮用于驱动所述滚珠丝杠的丝杠轴转动，所述摩擦环与所述齿轮连接，所述摩擦环用于控制所述滚珠丝杠的转动；所述机械自锁装置包括推力平面轴承；所述推力平面轴承设置在所述齿轮与所述摩擦环之间。因此，不依靠电磁或者其他自锁，即可实现滚珠丝杠的轴端机械自锁。