Question #471
Mechanical safety devices used in the construction of overhead cranes include:
Zabezpieczeniami mechanicznymi stosowanymi w budowie suwnic są:
a
anti-drop supports
łapy oporowe
Correct answer
b
starting resistors
rezystory rozruchowe
c
STOP switches
łączniki STOP
d
safety brakes
hamulce bezpieczeństwa
Why?
Anti-drop supports (łapy oporowe) provide passive mechanical protection: they support the structure after wheel or axle failure without an electrical signal. Starting resistors (rezystory rozruchowe) and STOP switches belong to the electrical system. Brakes stop or hold a mechanism but do not replace these supports.