Question #671
After finishing work with an overhead crane equipped with a lifting beam and lifting attachments:
W suwnicach trawersowo-chwytnikowych po zakończeniu pracy:
a
set down the beam with its attachments in the designated place at working level to relieve the load on the supporting structure
odstawiamy trawers z chwytnikami w wyznaczonym miejscu na poziomie roboczym, w celu odciążenia konstrukcji nośnej
Correct answer
b
position the beam at its uppermost limit
ustawiamy trawers w górne skrajne położenie,
c
disconnect the electromagnetic lifting attachments
odpinamy chwytniki elektromagnetyczne
d
all of the above answers are incorrect
wszystki powyższe odpowiedzi są niepoprawne
Why?
The lifting beam (trawersa) and its lifting attachments (chwytniki) must be set down on a support in the designated place at working level. Their weight then stops continuously loading the crane's supporting structure. Leaving the beam in its upper position does not relieve that load.