45
7.8
Safety sliding clutch
The sliding clutch is located between the rotor of the lifting motor and the main pinion shaft and
transmits the driving torque. At once it limits the transmissible power depending on the set coupling
torque. Hence an overloading of the electric chain hoist and crane components will be prevented.
A special advantage of the patented sliding clutch is that it is situated before the operating brake. In case of heavy
wear at the clutch lining an uncontrolled downward movement of the load will be prevented, because the load can be
held at every lifting point by the brake.
The clutch unit acts as a dry clutch with asbestos free linings. The clutch is easily adjustable and accessible. The
wear resistant special lining material does not require readjustment under normal operational circumstances.
7.8.1 Construction of safety sliding clutch
1
Motor cover
2
Pressure piece 1
3
Pressure piece 2
4
Motor pinion shaft
5
Clutch discs 1 and 2
complete with lining
6
Rotor complete
7
Brake hub
(not shown)
8
Clutch spring
9
Brake
10 Cylindrical pin
(not shown)
11 Adjusting nut
12 Counter nut
13 Cap for brake
13 12 11 8 9 3 1 2 5 4 6 5
Figure 44: Construction of the sliding clutch
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