Jung JLB 3 K Betriebsanleitung Seite 40

NOTE
To avoid overloads in the event the centre of gravity is
unknown, a single jack must be able to lift the entire
transport load by itself.
The total weight can exceed the specified total weight
of the original machine (weight on the nameplate) due
to later attachments.
3
1
Example:
Side (1) Pressure = 230 bar
Side (2) Pressure = 70 bar
230 bar + 70 bar = 300 bar
Length of side (1) and (2) = 1000 mm
Side (3) Pressure = 200 bar
Side (4) Pressure = 100 bar
200 bar + 100 bar = 300 bar
Length of side (3) and (4) = 1500 mm
> Set the result of the pressures (bar) of side (1) and
side (2) in relation to the measured length (mm) of
the parallel sides.
> Also set the result of the pressures (bar) of side (3)
and side (4) in relation to the measured length
(mm) of the parallel sides.
> Using the rule of three, calculate where the centre
of gravity is located: for this purpose, use the higher
of the two pressure values of the parallel sides as
the reference value.
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1
3
4
2
2
4
1500 mm
Transport trolleys series K / S / G / H
300 bar ≙ 1000 mm
Example sides (1) and (2):
230 bar ≙ 767 mm
300 bar ≙ 1500 mm
Example sides (3) and (4):
200 bar ≙ 1000 mm
> Enter the results. The determined centre of gravity is
at the intersection of the two lines. Before lifting the
load, the lifting side, the axis of rotation and the
exact lifting position must be determined.
Top view, example 1 ideal case
In example 1 ideal case, the jack is centred on each of
the four sides since the centre of gravity is exactly in
the centre.
© JUNG Hebe- und Transporttechnik GmbH