The Working Principle Of The Actuator

In the gear stage, the engine speed can be transmitted to the output rod through two sets of gears. The main reducer is completed by a planetary gear, and the auxiliary reducer is realized by a worm gear, which is fixed in the center position by a set of tight springs. In the event of an overload, that is, when the output rod exceeds the set torque of the spring, the central worm gear will undergo axial displacement, and the switches and signal devices will be fine-tuned to provide protection for the system. The output rod is coupled with the worm gear when the engine is working, and is coupled with the hand wheel when it is manually operated, under the action of the coupling operated by the external change control lever. When the engine is not working, the motor drive can be easily cut off, and the handwheel can be connected by simply pressing the control lever. Since the motor drive takes precedence over manual operation, when the engine starts again, the reverse action will automatically occur. In this way, you can avoid turning on the hand wheel when the engine is running, which is beneficial to protect the system.

Since the hand wheel is directly coupled with the output rod, it can ensure the normal manual operation of the valve when the internal gear fails or is damaged.