the braking system i am working on is very similar to the one they have in the diagram, except that instead of using a hook, the centrifugal brakes uses brake shoes and brake pads to stop the rope drum from rotating when it goes too fast.
the braking system i am working on works like this:
the rope drum have cable which connect the lowering platform, if the platform falls too fast, then the centrifugal force will force the brake shoe and the brake pad out, thus stopping the rope drum.
i hope this provides more information as to what i am looking for. thanks guys