Jung JKB Operating Instructions Manual page 41

230 bar + 70 bar = 300 bar
Length of sides (1) and (2) = 1000 mm
Side (3) pressure = 200 bar
Side (4) pressure = 100 bar
200 bar + 100 bar = 300 bar
Length of sides (3) and (4) = 1500 mm
> Set the result of the pressures (bar) of side (1) and
side (2) relative 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.
300 bar ≙ 1000 mm
230 bar ≙ 767 mm
Example sides (1) and (2):
300 bar ≙ 1500 mm
200 bar ≙ 1000 mm
Example sides (3) and (4):
> Enter the results.
The determined centre of gravity is at the inter-
section of the two lines.
Before lifting the load, the lifting side, the axis of rota-
tion and the exact lifting position must be determined.
Top view, example 1 ideal case
© JUNG Hebe- und Transporttechnik GmbH
JKB revolving transport trolleys / JLF multi-purpose trolleys
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.
Top view, example 2 complicated case
Symbol
•
I
Description
Centre of gravity
Selected lifting side
Also allowed lifting side
Prohibited lifting side
Axis of rotation
- 41 -