abstract:A knife switch is a type of switch used to control the flow of electricity in a circuit. It is composed of a hinge which allows a metal lever, or knife, to be lifted from or inserted into a slot or jaw.
Twolimitswitchesare installedonthe frametocontrolthe reversalvalve to change the movementdirectionof the rubberknife, at the same timeitprotects the cover of the cylinder.