pewag Winner pro G12 Originalbetriebsanleitung Seite 25

Method double entwined – This method provides increased safety when lifting loose bundles as the load is doubly
surrounded.
Figure 7: Wrap and basket hitch
double entwined
Special care should be given to the load capacity when using single or double entwined lifting chains; the load
capacity of a single lifting chain remains the same as long as the hook is mounted into the master link.
If, however, a circle is formed using a single chain and is then mounted directly onto the crane hook, the load
capacity is that of a two-strand lifting chain (see figures 5-8).
Implementation-related Limitations
Special lifting chain methods: Some methods of using lifting chains reduces the load capacity:
Method single choke hitch: With this method, a chain strand is laced through or under a load and the element
(e.g. hook or ring) is mounted on the chain itself. This can be used when there are no suitable lifting points and
provides the added benefit that the lifting chain holds the load together. When using this application method, the
appropriate angle of inclination can be configured without using force (see figures 9-13). Using the choke hitch
method, the load capacity (WLL) – according to the load capacity table – is 80 % of the load capacity specified on
the tag.
Method double choke hitch: This method allows further safety when lifting loose bundles by gripping the load
together (see figures 11 and 13). Using this method, the load capacity (WLL) is also 80 % of the load capacity
specified on the tag. If two chains strands are used in either a single or double choking hitch, the following should
be noted:
• If no torque should influence the load, then the chains should be laced the same
• If the load should not roll away when lifting, a reverse choke hitch is to be used (see figures 12 and 13)
More than two chain strands should not be used, as the weight of the load will not be equally distributed.
Figure 9
Figure 8: Wrap and basket hitch
double entwined
E
25