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Chassis
In
steel plate, arc welded, form a rigid load bearing structure.
The particular structure permit access to all the components.
The anterior wheel is connected to the frame by big thrust
block bearings. The rear traction unit is suspended on levers
hinged to the frame by pins and rubber springs. The wheel
tyres 4.00-8 are in super elastic rubber and assembled on
modular rims.
Traction unit
Made of expressly studied differential to obtain reliability
and silence. Moved by a motor of high performance and
reliability. The motor , A.C. type ,is provided with
an encoder and a thermal valve that are in contact with
the electronic control system : it is assembled transversely
to the machine over the traction unit to be in a protect
area and easily accessible.
Steering
The steering is obtained by the tiller rotation , these movement command a motor/gear
unit that move the anterior wheel. The system is electric/electronic because
the tiller move a potentiometer related to a chopper that control the AC. motor
of the drive unit : the drive chopper is related to the traction chopper to
stop the machine in case of drive fault.
Electric/electronic system
- autonomy
The
total system , of last generation , is principally provided
with two connected choppers that control steering and traction.
All the security requirements are satisfied : present man
sensor, general security switch, automatic stop in case
of fault , automatic parking brake. The machine is provided
by a 36 V. high capacity battery that permitted a long
autonomy : the battery can be changed or vertically or
from a side as the battery place is provided by a bearings
support.
Braking system
The tractor can brakes with two braking systems : at accelerator leave and by
a foot pedal that make working two hydraulic drum brake assembled on traction
unit. Very efficient is the leave brake , electronically adjustable ,that avoid
skid also on slippery floors.
Drive place
The
tractor permit by simple adjustments to move the seat and
the tiller to have a comfortable drive with the driver seated
or standing : these for help the work during the movements
or the picking work. The feet level is very low to facilitate
the rise and the descent.
Safety device
The tractors complies with actual prevention rules with regards
to components, performances and stability.
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