The tension in cable pulling the whole frame in the direction of the winch pulls the leg towards the winch.
The head frame could also be called the hoist frame which is used to lift or raise machineries and personnels. The winch in a machine is simply used as an adjuster of the tension of the wire or rope . The ropes or wire are controlled by the winch which adjusts the tension of the rope or wire.
By adjusting the rope or wire using the winch, the tension of the rope is altered, with an increased tension in the ropes, the entire frame is pulled and the legs beneath the head frame is pulled in the direction of the winch due to the tension.
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