Description Of The Pull Systems - spanesi MINIBENCH MAXIPLUS Manuel D'utilisation Et De Maintenance

The base frame structure (11- Figure 2) to which all the
stress is transferred consists of a welded steel structure to
which the supports and runners for the sliding wheels of
the pantograph arms and the stops for the safety hook are
fi tted.
The upper mobile platform (3) consists of a welded steel
structure expressly designed to house the supports for the
attachment of the four side elements (4) which sustain
either the pads (1) on which the vehicle body rests during
lifting or the clamps (2) for securing the vehicle bodywork
when using the pull arm.
The lifting system consists of a pair of single-acting
hydraulic jacks (10) which are driven by the electrohydraulic
control unit gear pump.
The pair of jacks operates a mechanism consisting of a
rocker (9) and a pair of connecting rods (6) which control
the movement of the pantograph arms (5).
The lift is moved up and down by means of the oil under
pressure supplied by the gear pump driven by an electric
motor, both of which mounted in the electrohydraulic control
unit installed inside a control console positioned at a safe
distance from the lift.
The hydraulic circuit, which controls the in and out
movements of the rods of the pair of lifting jacks (10), is
provided with a pressure relief valve and a safety lock valve
to protect against the breakage of the fl exible pipes (12).
The electrical cables that connect the lift to the control
console and the fl exible pipes that supply the lift with oil and
compressed air are housed in a protective sheath (13).
The position of the upper part of the lift is maintained by a
safety system consisting of a moving hook (8) automatically
controlled by a pneumatic cylinder (7) that engages a
series of steel blocks welded onto the base sheet as the lift
descends.
The MINIBENCH MAXIPLUS is provided with a device that
permits the quick connection of the pull arm to the lift by
means of a pneumatic control that drives the coupling block
connection system cylinder (see pull arm description).

1.5 DESCRIPTION OF THE PULL SYSTEMS

The MINIBENCH MAXIPLUS is provided with a pull
system which can easily be equipped by the operator for
straightening the body or other parts of a vehicle damaged
by an accident.The main part of the pull system is the pull
bar or arm, which is used to keep the part of the vehicle
being repaired under tension.
The main parts of the system with the standard pull arm
(fi g. 3A-3B-3C and 4) are:
FIGURE 2: Perspective view of lift
I
GB
F
D
E
FIGURE 3A
53
GB