At Intermat 2018,
Doosan is showing the new DL280-5 wheel loader for the first time, with a
dedicated design for the waste and recycling market and general industrial
applications.
The DL280-5 is the
latest development in the high performance Doosan wheel loader range, which
comprises 12 models – covering operating weights from 12 to 35 tonne.
The DL280-5 offers
high performance and high productivity with outstanding breakout force, tipping
load and enhanced output.
The front lift arm
is powered by a closed centre hydraulic system with a 210 l/min axial piston
pump. This system provides maximum hydraulic performance, without
producing excess capacity, thus saving on fuel and extending the lifetime and
reliability of vital components.
The DL280-5 features
Z-bar kinematics with a simple lifting piston system designed for heavy-duty
applications. The breakout force of 145 kN is combined with a constant
bucket angle that is maintained throughout the range of movement. Bucket angles
are also optimised in the travelling position and at ground level.
The lift arm
benefits from an automatic Load Isolation System (LIS) – often called ride
control – a standard feature which significantly improves the wheel loader’s
ride quality and operator comfort by ensuring a smooth ride over rough terrain
and reduced cycle times owing to improved vehicle stability when moving.
This provides higher productivity and better fuel efficiency when
performing load and carry applications. The speed for automatic
activation of the LIS system is fully adjustable by operators.
The DL280-5 is
powered by the well-proven 5.9 l Doosan DL06 diesel engine which provides high
torque, performance and durability in this and other models in the Doosan
range. Featuring cooled exhaust gas recirculation (EGR), enhanced turbo
charger technology and Selective Catalytic Reduction Technology (SCR) without
having to use a diesel particulate filter (DPF) – a feature of particular
interest for the waste and recycling industry - the DL06 engine is compliant
with Stage IV/Tier 4 Final emission regulations.
The engine power is
managed via three different working modes: ECO, Normal and Power, to ensure the
best torque and power to handle even the toughest work conditions with the best
fuel efficiency.
As standard, an auto
shut-down reduces the idle time of the engine, to prevent the over-consumption
of fuel and wasted operating time. Operators can easily set the timing
for this function via the LCD display in the cab.
A maintenance-free
air pre-filter automatically removes debris and separates more than 99% of
particles 20 micron and larger, which greatly extends air filter life.
The cooling
compartment is equipped with a hydraulic reversing fan to provide very
efficient cooling, with a variable speed range from 530 to 1800 rpm.
Performance is automatically adapted for lower fuel consumption and
shorter warm-up periods. The operator can again easily set standard
intervals for the reverse fan from the LCD display in the cab.
The transmission is
composed of a torque converter linked to an automatic Powershift transmission
to produce a high output to deliver the highest possible traction force.
The gear ratios are optimised and smooth, and shock-free shifts
contribute to the high overall level of operator comfort.
The DL280-5 utilizes
20.5 R25 tyres with drive provided by reinforced axles which ensure a high load
capacity. Limited slip differential locks at the front and rear
automatically ensure maximum traction and easy driving over soft and muddy
ground with no need for a manual differential lock. They also reduce the
risk of skidding and prevent excessive tyre wear. A hydraulic
differential lock – also available – can be activated automatically before one
of the tyres starts to slip.
The operator
environment is state-of-the-art, with a modern and attractive work space
offering generous headroom and full seat movement provides plenty of leg room.
An ultra-comfortable Grammer seat is a standard feature with vertical and
horizontal suspension, heating and full adjustability.
Materials for the
interior of the cab have been carefully selected for their high quality and
easy cleaning. In addition, the driver’s belongings are readily at hand,
thanks to several storage boxes placed throughout the cab. To ensure a
healthy work environment, the cab air is filtered twice to eliminate all
particles larger than two microns. The cab also meets ROPS/FOPS
regulations – with a wide emergency exit (located on the right hand side)
facilitating fast, easy evacuation when needed.
In common with the
five larger Doosan wheel loaders - the DL300-5, DL350-5, DL420-5, DL450-5 and
DL550-5 - the DL280-5 has a wide range of new safety and ergonomic features
that are now available as standard.
A number of the new
features are aimed at increased safety and visibility in and around the
operator’s cab. For example, a new handrail has been installed around the
cab roof with three holding points, allowing operators to move very safely all
around the cab to clean windows and to perform other tasks.
A new large step and
access platform has also been added on the front of the cab and a change in the
wiring routing has allowed the horn to be repositioned below the road
light. Together these changes ensure maximum safety and confidence, with
very safe and faster movements around the cab (without any obstacles) during
daily maintenance. All of these features are important for work in waste
and recycling and general industrial applications.
Inside the cab,
there is a new ergonomic joystick control with a progressive thumb wheel added
for the auxiliary hydraulic line (3rd valve), often used to power high tip
buckets and grapples commonly used in the waste and recycling market. The
progressive thumb wheel ensures that no additional lever is needed, providing
the easiest combination of movements to manage the 3rd valve operations.
FNR control has been relocated on the back of the joystick, via a
three-position rocker switch, which is much more convenient and intuitive to
use.
Of special interest
for waste and recycling work, the operator has the benefit of additional convex
mirrors installed on the lateral mirror frames. The wider angle and
additional visibility provided by the convex mirrors along the side of the
machine ensure safer manoeuvring of the wheel loader on site and in the
yard.
The DL280-5 wheel
loader also features a new lockable steel cap on the transmission oil filler,
the shape of which has been changed to allow it to be locked with a
padlock. When the transmission oil filler tube is locked, the
transmission oil cannot be polluted with other types of oil or liquid, dust and
other substances that could be transferred from handling waste material.
It is also an additional guarantee of security for the customer.
A rear camera
provides a clear view of what is happening behind the machine for added safety
and peace of mind. The full colour display screen in the cab shows the
operator what the camera sees. The panoramic view shows other vehicles
coming up behind the loader or people on the ground, and indicators on the
screen provide a good perception of distances.
The DL280-5 has the
DoosanConnect telematics system as standard – offering customers peace-of-mind
by being able to remotely locate, safeguard and monitor operating and
production parameters for the machine.
