Question #478
The hoisting mechanisms of general-purpose overhead cranes should use:
W mechanizmach podnoszenia suwnic ogólnego przeznaczenia powinno się stosować hamulce:
a
Automatic brakes
automatyczne
Correct answer
b
Band brakes
taśmowe
c
Three drum brakes
trzy hamulce bębnowe
d
At least two disc brakes
minimum dwa hamulce tarczowe
Why?
An automatic brake (hamulec automatyczny) applies when the hoisting drive is switched off or power fails, holding the load. The operator does not have to apply a separate brake to prevent the load from descending. There is no general requirement for every such crane to have two disc brakes.