Synchronous Operation Of Lifting Columns; Different Heights; Parallel Alignment - RK Rose+Krieger RKSlimlift Notice D'assemblage

7. Working life

7.3.1 Synchronous operation of lifting columns

In an ideal case, two or more lifting columns are parallel to each other and drive up and down
synchronously. In reality, there are numerous factors which do not allow this simple way of con-
sidering the problem. Production tolerances are unavoidable when manufacturing lifting col-
umns, as well as their own construction components. In the worst case, the tolerances for various
components may be cumulative and lead to tensions and damage.

7.3.2 Different heights

A rigid connection between lifting columns at the same
height is essential. If the table is firmly bolted down, the lift-
ing columns are tensioned. Consequently, the running prop-
erties deteriorate and the working life is reduced. The cause
of different heights is usually an uneven base. Therefore, the
baseplate of the lifting column should be variable in height.
However, it is also possible that production tolerances mean
that the lifting columns are at different heights in the driven
up state. In this case, the limit switches on some lifting col-
umns can be adjusted for height.

7.3.3 Parallel alignment

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X1 X2
If the lifting columns are not parallel to each other, then the
distance between the top fastening points changes during
motion. However, a rigid connection keeps this distance con-
stant. The consequence is that considerable forces act on the
lifting column guide, which can be damaged by this.
In this case, the lifting columns should again be aligned ex-
actly. Uneven floors can be compensated by using an adjust-
able baseplate.
7.3.4 Bends in the table frame
Table frames are generally made of welded steel tubes and
connection plates for connecting to the lifting columns. If the
connecting plates are not flat against the lifting column, then
the synchro system is stressed during screwing. This gener-
ates unwanted transverse forces which stress the lifting col-
umn guide. Please ensure that the components are working
perfectly.
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