Rope Rescue Pulley Systems Diagrams

Pulley systems introduction victims in the field of rescue often times find themselves stranded somewhere well above head level on cliffs mountains bridges buildings and other structures. A few simple pulley systems are most frequently used. The most common is a 3 1 mechanical advantage sometimes called a z rig because when rigged the rope looks like a z.

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In a simple system one rope is routed between pulleys on the anchor and load and all of the pulleys that move i e the traveling pulleys do so at the same speed and in the same direction as the load.

Rope rescue pulley systems diagrams.

The obvious challenge of importance to the rescue attempt is the need to get the victim down. It requires less rope than a non piggybacked 2 1 system is reasonably easy to rig is easy to add a progress capture device provides an appropriate amount of mechanical advantage to raise one or two people and with a few tweaks it can be converted into a simple 5 1 system. Any ultimate benefit from the rescue maneuver hinges upon pulleys systems for rescue industrial rope. Mechanical advantage systems can be either simple compound or complex.

They are typically used for hauling and lifting loads but can also be used to apply tension within a system such as in a tensioned line or tyrolean. 3 1 system the 3 1 is the classic mechanical advantage system used by rescuers. Pulley systems are used to provide us with a mechanical advantage where the amount of input effort is multiplied to exert greater forces on a load. Simple compound and complex.

Simple m a systems can be defined as systems with all the moving pulleys moving at the same speed as the load.

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