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4. GENERAL DESCRIPTION OF DESIGN AND FUNCTION
The
T730
is a metal design with open load surface. The trailer features a pneumatic or
hydraulic service brake and a parking brake that is manually operated via a screw gear, actuating
the friction components of the rear axle service brake.
The trailer features a complete signalling and warning system (an electrical system and
reflective lights).
The trailer is also suitable for transport on public roads.
The trailer is manufactured in accordance with Directive 2006/42/EC and the following
standards: PN-EN ISO 4254-1:2009, PN-EN ISO 1853+A1:2009, PN-EN ISO 13857:2010, PN-
EN ISO 12100:2011.
4.1. Chassis
The trailer chassis is composed of the following subassemblies: bottom frame, tow bar,
wheel sets and suspension components. The bottom frame and the tow bar are welded structures
made of steel sheet and profiles.
The trailer wheel sets are composed of: the axles (tandem style), land wheels and wheel
brakes.
The axles are made of thick-wall pipes terminated with plugs on which land wheel hubs are
set by cone bearings. They are single wheels equipped with drum brakes with the jaws actuated
by mechanical expander cams.
The trailer axle suspension consists of steel semi-elliptic leaf springs attached to the turntable
frame and the bottom frame by pins and sliders. The wheel sets are attached to the springs by
bolts.
4.2. Load surface
The loading space of the trailer is made of the following:
The top frame (box frame) that is set on the bottom frame (chassis frame) in articulated seats
secured by pins which serve as pivots during tilting (tipping) of the top frame (load body/box).
The side walls/boards and their top sections are singular components. Each component
features a separate set of locks for closing and opening of individual wall and top sections
independent of each other and in any order. These design solutions increase functionality and
facilitate operation of the trailer.
The wall and top section locks are secured against accidental release.
