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Working principle of electric push rod

Working principle of electric push rod

Aug 04, 2020

After the motor is decelerated by gear or worm gear, it drives a pair of screw nuts. The rotary motion of the motor is turned into a linear motion, and the forward and reverse rotation of the motor is used to complete the push rod action. For example, complex actions such as rotation and shaking can be completed through various levers, rockers or linkages. By changing the length of the lever arm, the stroke can be increased or decreased. Stroke control device

Worm gear transmission form: the worm on the motor gear drives the worm gear to rotate, so that the small screw in the worm gear moves axially, and the connecting plate drives the limit rod to move axially. When the required stroke is reached, the limit block is adjusted Press down the limit switch to cut off the power, and the motor stops running (forward and reverse control are the same).

Gear transmission form: The motor drives the small screw rod installed in the inner tube through the reduction gear, and drives the nut connected with it to make an axial running nut. When it reaches the set stroke, the contact angle of the nut presses the limit switch to disconnect the power supply. Stop the movement (the reverse is the same).

An optional power distribution positioner is used to display the stroke status of the push rod operation, and an encoder can also be added to achieve a complete stroke in several steps (that is, stop and go).