6
DHOLLANDIA
MOBILE COLUMN LIFT TERMININOLOGY
See figure below page for parts corresponding to numbers in this table
#
Description
1
Lift column L+R: main assembly incorporating the lift cylinder, the lift shaft with the lift forks, the power pack, the electric
control box, the work light, etc. The main columns are mounted on wheels and equipped with a pallet jack mechanism.
The master column [1a] is equipped with the electric control box [6] and hydraulic power pack [7]. The slave column [1b]
only incorporates a lift cylinder and is fully dependent upon the master column.
2
Pallet jack mechanism L+R: enables to operator to move the lift columns around, to push them under the tires of the vehicle
or the pull them from underneath.
Before lifting a vehicle, the operator must lower the lift columns to the ground by means of the pallet jack mechanism to
guarantee sufficient stability. A fail safety will do this automatically if the operator forgets to do so.
3
Lift shaft and lift cylinder L+R: shaft mounted inside the lift column, moved up and down by a hydraulic lift cylinder. The lift
shaft incorporates the lift forks.
4
Lift forks L+R: the lift forks are the load carrying structure, carrying the vehicle. The standard lift forks are suitable for larger
diameter tires of trucks, trailers and semi-trailers.
Tire adaptors [4a] are foreseen on the lift columns, to adjust the space between the forks to smaller tire sizes of vans etc.
5
Safety lock L+R: lock preventing that the lift forks and the vehicle drift down in case of accidental loss of pressure in the
hydraulic circuit. The operator MUST ALWAYS engage the safety lock as soon as the vehicle is raised to the desired
elevation.
6
Electric control box: mounted in a fixed position at the back side of the master column. Contains the electrical switches
allowing the operator to execute all functions, a main power switch, an emergency stop, and 2 plugs.
The emergency stops on the master and slave columns enable the operator to immediately stop every electrically induced
movement in case of emergency.
The top plug allows to connect various mobile column lifts with each other. The bottom plug allows to connect the master and
slave columns.
7
Hydraulic power pack: contains the electric motor driving the hydraulic pump, the oil tank, and the control valves. The power
pack also incorporates the quick-fit hydraulic couplings to connect the master and slave columns; the main power cable and
main power plug.
8
Levelling valve: manually operated valve used to level the master and slave columns again if they are out of synchronization,
and vehicle would be lifted askew.
9
Work light L+R: light tube foreseeing additional lighting of the work area under the vehicle.
