Elevator safety rod pull rod action principle?
The first speed limiter moves, the speed limiter wire rope is jammed, then the wire rope pulls the safety clamp and the main rail,Whether to move up or down depends on whether the governor is a two-way speed limiter
The safety tongs are only useful for falling down, and the overspeed will only operate the speed limiter switch. Down speeding will first action speed limiter switch, the safety circuit of the elevator outage when the car stop, but also because of inertia continue to glide down, pull the card machinery overspeed governor rope which makes the safeties. For overspeed protection, the rope clamp is used and the speed limiter switch circuit is used.
