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Page 9
Snatch Block
A snatch block is an important aid to
successful winching and can be used to
increase the pulling power (or mechanical
advantage) of a winch, or change the
direction of a pull.
Where a double line pull is used (i.e. where
a snatch block is used at the load or anchor
point and the winch rope is connected back
to the vehicle), twice the pull force is
applied but the rate of recovery is halved.
One snatch block can be used in an indirect
pull where the vehicle is limited due to
unsuitable ground or obstruction. In this
instance, the pull on the load is the actual
line pull of the winch.
If more than one snatch block is used, they
must be located at least 100cm (40
″
) apart.
Tree Trunk Protector Strap
A tree trunk protector strap is useful for connecting a rope to almost any
anchor point but is primarily designed to prevent a tree from ring barking.
The
tree trunk protector should be wrapped around the chosen tree or anchor
point as low to the ground as possible and the two ends brought together and
joined with a bow shackle. The bow shackle then becomes the recovery point
to where the rope or extension strap is joined.
Recovery Damper
A recovery damper is a safety device designed to help eliminate the possibility
of injury or property damage in the event of a rope failure. Placed in the middle
third of a live rope, in the event of the rope breaking, the damper can help
absorb the energy in the rope and reduce the likelihood of injury or damage.
Using Accessories
Содержание DV-12TH
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