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6. Operation
The device begins unwinding the wire rope automatically, when you release the wire
rope or when the function for wire rope unwinding is set on the brake. The wire rope is
unreeling until you stop the unreeling function on the winch. After the machine is turned
on, the steering system ensures the engagement of the hydraulic cylinder in the
unwinding position. After three seconds, the oil flow is redirected to the hydraulic motor of
the upper pulley. The non-return valve, which is connected to the brake cylinder, enables
a stable position of this cylinder. When in use, all regulations for safe use of the winch must
be observed. Unwinding speed depends on the oil flow or the PTO shaft speed, which
must not exceed 540 revolutions per minute.
When the wire rope unreeling function is turned on, the speed of the wire rope is a bit
higher at the beginning. After a few meters, the speed decreases. This is completely
normal considering the system of operation.
Only the speed is decreased and not the force, which the wire rope is being unreeled
with from the drum.
Settings
After the assembly and testing, the machine is set. If the machine does not start
unwinding the rope, when you turn it on, you must adjust the settings.
Observe the following procedure to adjust the settings.
If the wire rope is not mounted on the drum tight enough, unreel it and reel it again
properly (use a load). To ensure a flawless operation of the reeling machine, the wire rope
must not be damaged (bent or torn).
When you start unwinding the wire rope, adjust the force of the safety brake on the drum,
so that the wire rope does not unwind on the drum (See instructions for using the winch,
Safety brake settings). Next you must set the pulling force of the small sheave (pos. 3,
figure 12a) on the larger sheave. If the rope is slipping on the larger sheave (2), increase
the force of the small sheave using the adjustment screws (4). In case the larger sheave
(2) is not spinning, decrease the pulling force of the small sheave (3) using the adjustment
screws (4).
If the reeling machine functions properly, you can increase the force of the safety brake
on the drum to ensure an even winding of the wire rope onto the drum. If you are using
an additional brake, it is important that during the reeling of wire rope on the drum
(unloaded rope
–
there is no load on the rope), the bigger sheave (2) is spinning together
with the wire rope (it should not be sliding). The settings are made according to the
above procedure.