Multi-rotation type versatile electric actuating mechanism

Abstract

The invention relates to a multi-rotation type versatile electric actuating mechanism, which comprises a casing, a motor, a speed reducer, a hand-operated wheel, an output shaft and an output shaft angular displacement detecting device. The multi-rotation type versatile electric actuating mechanism is characterized in that the casing is in a T-shaped structure, the motor and the hand-operated wheel are mounted at a front port and an upper port of the casing respectively, a speed controller and an operation panel are mounted at a lateral port of the casing, a binding terminal is mounted at theother lateral port of the casing, the lower port of the casing is an output end, a bumpless switching structure is arranged between the speed reducer and the hand-operated wheel, and the output shaftangular displacement detecting device consists of a position driving shaft and an absolute-position encoder. The T-shaped structure of the casing is compact, the output shaft is kept perpendicular orhorizontal, and field wiring, panel display and hand operation cannot be affected by mounting of the valve. The speed of the motor can be adjusted by the speed controller, electric or mechanical impact is effectively avoided, and valve positioning can be driven accurately. Hand operation and electric operation can be switched automatically by the bumpless switching structure, so that labor is saved. Besides, loss of data of valve location after power off is avoided by the aid of the absolute-position encoder.

Description

technical field [0001] The invention relates to an electric actuator, in particular to an all-round multi-rotation electric actuator. Background technique [0002] Electric actuators are actuators that use electric energy as a power source. In the prior art, electric actuators are widely used in industries such as chemical industry, petrochemical industry, electric power, and natural gas, and control industrial processes by driving pipeline valves. At present, electric actuators are generally composed of motors, reducers, controllers, manual wheels, output shafts and housings. In the application of the industrial field, the electric actuator is required to be able to perform electric operation in a switch or adjustment mode, and also needs to be equipped with a manual wheel for manual manual operation, and it is also required to be able to provide a series of safe operation settings during operation. , protection and alarm functions. [0003] At present, the traditional e...

AI Technical Summary

Problems solved by technology

[0004] 1) Regardless of whether the operation is performed by a switch or an adjustment method, the speed control cannot be realized, so that the electric actuator will produce bad electrical or mechanical shocks when it starts and stops, and it will easily cause the electric actuator to coast and oscillate;

[0005] 2) The switching between manual and electric operation is done manually, which is laborious and time-consuming;

[0007] 4) The shape and structure are complex and bulky, and the site installation will be limited by some positions or directions

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