SU493584A1 - 2 speed drive unit - Google Patents

Description

drove 6; at the same time, rotation from the cylindrical wheel 2 through the disk friction clutch 7 is transmitted directly to the output shaft 9; the pawls 10 and the leash 13 are in the middle position and rotate together with the output shaft 9, i.e. the rotation goes directly from the electric motor 1 to the output shchettern 18; when the output torque exceeds the predetermined torque provided by the spring 8, the output torque will turn into an angular turn, and therefore the finger 20 will be displaced, which through the jaws 21 will weaken the effect of the spring 8 on the clutch discs 7. The slip clutch will slip 7 and slowing down the rotation of the output shaft 9, while the cylindrical wheel 2, continuing to rotate at the same speed, rotates the pressure disk 15, which, through the balls 14, will begin to turn the leash 13, and through it the pawl and 10. The carrier 6, while continuing to rotate, resists its slots in the pawl 10 and the rotation of the output shaft 9 and the output tine 18 will continue in the same direction, but at a lower speed.

By reducing the torque on the output pin 18, the pin 20 returns to its original position, the spring 8 will again act on the friction clutch 7 and the rotation will be transmitted directly, and the dogs 10 will be returned to their original, neutral position by the action of the springs 12.

Subject and s b j e te n u

Two-speed actuator for controlling pipeline valves, comprising a planetary gear motor, friction-preventive

a clutch and a cam clutch, kinematically coupled to an output shaft, characterized in that, in order to obtain a second rotational speed of the output shaft with a higher torque, the cam

the clutch is equipped with a switching device, made in the form of spring-loaded dogs, controlled by means of a driver from the pressure disk, which is spring-loaded in the axial direction and fixed from the turn

with respect to the leading gear of the planetary gear.

sixteen

13