L3 WINCH
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. 25)
Pos. Description
1. Winch
2. Cable
3. Fixed pulley
4. Balance weight
5. Hook
6. Transmission pulley
7. Block (double-triple.... line)
(!) WARNING (!)
Check the condition of wire rope.
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 suspended
load rotate slowly and with care checking the stability of the vehicle.
L3.1 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 conformity
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 ...
(!) See operator winch manual supplied by the winches’ manufacturer.
The winch has a maximum capacity, 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.
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.
Winches are equipped with an end stroke device that in the lifting or in the booms
extension rams exit prevents the cable hook or the block from hitting the fixed pul-
ley, and in the unwinding keeps at least three (3) turns of the cable wound around
the winch drum, tripping either device disactivates the relevant controls.
To reactivate the controls the winch control lever must be activated controlling:
- the descent if the device operation is happened in the lifting or in exit with
the booms extension rams;
- the lifting if the operation is happened in the unwinding of the same one.
L3
USE OF IMPLEMENTS
F 170A
34
fig. 25
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