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Winching
Guide
Snatch Blocks
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of vehicle recoveries.
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of a rope. In the diagram a 4 ton vehicle is attached to a rope
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Notice that the tension in each of the ropes is
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must carry the combined load of the ropes.
This is a simplified example neglecting the angle of
pull of the ropes. As the angle between the ropes
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Example 1: Direction Change
In a direction change situation, the objective is
to pull from a direction that has a greater impact
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does not provide any increase to the recovery
force but it does change the direction of the pull.
Example 2: Recovery Force Increase
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force than the winch can provide, a double line
pull should be used. This can help reduce the
load on the winch and decrease the electrical
load on the vehicle.
In this example the weight becomes the
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is again connected to an anchor point. The
usefulness of this rigging is to leverage
the doubled force of the two ropes that the
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force to be double that of a single line pull.
Additionally the double line rigging will require
more rope off the drum, allowing the winch to
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pull force.
8T
Snatch Block
Winching
Vehicle
Recovery
Vehicle
4T
4T
4T
Load
