21
USE OF IMPLEMENTS
GRU FASSI
21
WINCH (when fitted)
20.1 Generality
The winch is made of a drum that can rotate by means of a hydraulic motor, on a
structure fixed on the crane. The rotation of the drum on which the cable winds is
achieved by a hydraulic motor controlled by a safety check valve connected to the
crane circuit. A parking brake integrated to the motoreducer group hold the load
in position when the winch control lever is in neutral position.
Nomenclature of winch unit (fig. 23)
Pos. Description
1.
Winch
2.
Cable
3.
Fixed pulley
4.
Balance weight
5.
Hook
6.
Transmission pulley
7.
Block (double-triple.... line)
(!) ATTENTION (!)
Check the condition of wire rope.
(!)
On winches not equipped with cable layer, check the rewinding of the
cable on winch drum proceeds regularly and without overlapping: it is
suggested to rewind the cable only if it is sufficiently taut.
Do not rotate the crane before the load is lifted. Lift the load vertically using the
cable and not the boom in order to avoid swinging the load. With the suspen-
ded load rotate slowly and with care checking the stability of the vehicle.
21.2 Winch for crane
The identification data and the essential characteristics are marked on a plate
fixed by the manufacturer and used for the CE mark which testifies its confor-
mity to the Machine Directive (D.M.)
Manufacturer mark ...
Winch type ...
Serial number ...
Maximum line in N at the 4th layer...
Maximum speed in m/min ... or Maximum capacity pump l/min
(!) See operator winch manual supplied by the winches’ manufacturer.
The winch has a maximum capacity (which cannot be exceeded), indicated
by a plate, not related to the crane capacities which can also be lower.
Consequently avoid to lift, with the winch, heavier loads than those allowed
by the crane capacity plate.
Note:
We do not recommend using the winch with load moving (winch in
or out) at the same time as the extension booms or the crane and
hydraulic jib (if fitted), since it accelerates the wear of the extension
guide pads reducing their life to one third compared to a standard
application.
The couple limiter, installed on the winch structure, prevents that on the
cable, can be created a load major to the value of maximum line at the
4th layer, quiescing all the crane controls.
(!) Under no circumstances interfere with the limiter device adjustment.
fig. 23
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