PRONAR T672ECO User Manual page 56

Construction and principle of operation
ADVICE
Drawings describing the construction of the trailer
show an example equipment configuration Detailed
information on all options can be found in the Equip-
ment chapter.
rear part of the lower frame there is a rear
beam (3), ended with ball pins. The design
of the foundation of the upper frame and
the locking method enables tipping of the
load box sideways and backwards. The
front beam (9) of the lower frame, on the
right and left side have been welded with
brackets for mounting the upper frame.
The shapes of the holes in the handles are
designed so that the pins connecting the
upper frame to the lower frame are placed
in the right seats.
In the rear part of the chassis there is
a lighting beam (8), to which mainly elec-
trical equipment is attached. Above the
lighting beam, as an option, you can mount
a rear hitch designed for aggregating
a second two-axle trailer. The 33 mm di-
ameter pin is adapted to be connected
with a 40 mm tie rod.
The trailer suspension consists of driving
axles (4) and parabolic springs (11), fas-
tened to the turntable frame (5) at the front,
and to the lower frame (1) at the rear by
means of spring pins (12). The axles are
attached to the springs with a spring plate
and U-bolts. They were made of a square
bar terminated with pins, on which road
wheel hubs are mounted on the tapered
roller bearings. These are single wheels
equipped with calliper brakes actuated by
mechanical cam expanders.
In the front of the trailer there is a turntable
frame (5) to which the V-type drawbar (6)
or Y-type drawbar (15) can be mounted.
The diameter of the drawbar eye is 40mm.
The height of the drawbar can be adjusted
by using the sliding hitch (7) connected to
the drawbar spring (13).
ADVICE
In the trailer version with overrun brake, the (normal)
axles are replaced with overrun axles equipped with
a mechanism that secures the locking of the vehicle
wheels when reversing.
PRONAR T672ECO
Chapter 3
G.3.3.619.02.1.EN
3.5