Lifting Mechanism; Support Arms - Bosch VLH 2155 Manual Original

en 26 | VLH 2155 | Product description
Each lifting carriage is provided with two support arms
(4, 5) with mounts (12) which act as loadbearing ele-
ments.
The switch rod (6) actuates a limit switch to stop tall
vehicles coming into inadvertent contact with the over-
head beam.
5.9.2

Lifting mechanism

Each column is provided with a hydraulic cylinder. The
lifting carriage is attached to the hydraulic cylinder.
The lifting carriage is raised as the hydraulic cylinder is
retracted.
Synchronization of the two lifting carriages is ensured
by two steel cables to prevent uneven running on ac-
count of one-sided loading. Refer to Fig. 4.
Abb. 4: Synchronization control
1 Upper pulley
2 Steel cable
3 End pieces for attachment to lifting carriage
4 Lower pulley
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5.9.3

Support arms

Each lifting carriage is provided with two support arms.
The VLH 2155 is available with short or long support
arms:
Version Short support
arms
Length L1 (front) 700 — 1421 mm
3-piece
Length L2 (rear) 700 — 1421 mm
3-piece
The support arms are of telescopic design and can be
swivelled in the lower lifting range. As of a lifting height
of approx. 20 cm, the support arms are locked auto-
matically to stop the mounts slipping off the specified
jacking points.
!
With maximum load, the load distribution between
the pairs of support arms should be no more
than 3 : 1.
Long support
arms
900 — 2000 mm
3-piece
900 — 2000 mm
3-piece
Robert Bosch GmbH