PRONAR T185/1, Руководство пользователя, Страница: 54 / 156

Rozdział 3 Construction and operation
3.4
PRONAR T185/1
The main load-bearing element of the hook
trailer is the lower frame (1) - Figure (3.1),
which is a welded structure made of steel
sections. In the front part of the frame there
is a drawbar beam to which the drawbar
eye (2) is attached. Depending on the
version, the trailer may be equipped with
other types of drawbar beam, presented
in chapter 1.
The left support of the drawbar beam is
screwed to the trailer support (3). The
parking brake mechanism (4) is welded to
the bracket on the left side of the frame.
The rollers for the brake cable and the
brake lever are attached to the bottom of
the frame.
Side covers (5) can be mounted on both
sides of the trailer, and tool box (6) on the
left. The mudguards (13) are mounted on
the brackets to the lower frame.
The trailer chassis consists of a tandem
mechanical suspension (8) and rigid
axles (9). Trailer axles are equipped with
drum brakes. Actuators actuating brakes
are pneumatic or hydraulic cylinders de-
pending on the installed braking system.
In the rear part of the frame there is a rear
beam (3) (rear protection) which can be
manually pulled out and can be locked in
two positions using pins (11).
Complete lighting beams (12) were mo-
unted on both sides. The combined lamps and reflective triangles included in the li -
ghting set have been protected against
damage by covers. When driving the
trailer on public roads, these covers must
be removed and fixed on the other side of
the lighting beam profiles with star nuts.
The swing frame - Figure (3.2) is con-
nected to the chassis by means of a swing
axle and a swing cylinder. The swing frame
consists of a rear frame (1), a central
frame (2) and a hook frame (3) to which
the hook (4) with automatic container pro-
tection is screwed. Individual frames are
connected by means of pins mounted in
sleeves. A locking system is attached to
the left rear side member.
During the container tipping backwards,
the locking system fixes the middle frame
together with the rear frame. Lock lever (1)
- Figure (3.4) is at this time in position (I).
The entire swing frame is lifted by means of
a tipping cylinder. The lever (1) is secured
CAUTION
Switching the locking lever (1) - figures (3.4) and (3.5)
is only allowed when the tipping frame is in the rest
position. During this time, the rear frame and the mid-
dle frame are set in a position relative to each other,
which makes it possible to easily lock or unlock the
system. Attempting to shift the lever in another po-
sition may cause damage to the trailer and seriously
threaten the safety of persons operating the trailer or
bystanders. About this threat is indicated by a sticker
placed on the hook frame - figure (3.3)