43
INTERNATIONAL AND SPECIALIZED TRANSPORT
■
DECEMBER 2013
COMPONENTS
U
pdates to regulations and industry
standards and changing site
conditions mean that component
technology in cranes is continually being
developed. New components are designed
to work both for the machine and for the
operator, helping to increase performance
in day to day work.
Handling and controlling a load is one
area that has seen a lot of development
regarding additional technologies fitted
on cranes. From Hawe Hydraulik, for
example, is the PSL, a proportional
directional spool valve which can be used
in mobile hydraulic systems for controlling
the direction and motion of a load. The
system comes with a CAN-Bus interface
and is connected to the vehicle’s control
unit, a spokesperson explains. “It provides
the operator with precise hydraulic control
of their loads
by controlling
the hydraulic
valve operating
Hirschmann Automation and Control,
explains, “Components such as SLIs make
the job of the crane operator easier as the
safety risk of choosing the wrong operating
mode is minimised.”
In November 2013 Hirschmann, a
provider of communication and network
products for mobile machines, introduced
the qSCALE I2, a safe load indicator (SLI).
The SLI is suitable for telescopic cranes and
is used to configure the crane for lifting.
“With regards to calibration, the
times.” All pressurised components are
made of steel and the valve is designed for
a maximum operating pressure of 420 bar.
Also from Hawe Hydraulik is the
valve control PLVC 8x2, a valve control
system for controlling hydraulic systems
for lifting. “The valve control PLVC 8x2
allows the user to programme pressure,
velocity, acceleration processes, and
complex control and actuation tasks, with
short cycle times for the hydro consumers,”
a company spokesperson explains.
To achieve this, analogue and digital
components and those with CAN-Bus
interfaces are interlinked.
“The device has 16 proportional
outputs, which can be used to activate
eight twin solenoids for eight functions,”
a spokesperson adds, “The basic
configuration includes six digital
frequency inputs, as well
as eleven analogue inputs
that can switch between
0-5 or 0-10 V, and
4-20 mA.”
Keeping to
the limits
Other new technology
available includes
safe load indicators
(SLI), which the
operator can use to
determine a crane’s
safe load. Yardena Hemmann,
manager marketing communications
of mobile machine control solutions at
Staying in control
>
Much of the product
development in the
components sector is driven
by factors such as regulations
and safety laws as much
as improved crane function.
LAURA HATTON investigates some
new products available for crane
manufacturers and the benefits
for end users
The Danfoss
TMTHW500
orbital wheel
motor
The proportional directional
spool valve type PSL from
Hawe Hydraulik
An Orlaco
camera system
