The HRU is a compact hydraulic driven double roller unit,
facilitating easy hose pick up from the road while the hose layer
truck is driving slowly forward along side the hose.
The
HRU operator has the facility of a 2-speed control from a
portable remote control panel. Hose pick up speed up to 2000
mtr/hr (6" hose)
A swivel joint enables the HRU to choose its
required pick-up angle in relation to the position of the truck
and the position of the hose.
The unit is
equipped with electronic eye sensors, indicating to the pressure
rollers to open up automatically at the moment a coupling is
approaching the HRU. After the coupling passed the first pressure
roller, other electronic eye sensors indicate the first pressure
roller to close and the rear rollers to open up. All of this in a
simple automatic process of only a few seconds. This means an
uninterupted pick up of hose is possible.
Water draining from the hoses automatically draws a vacuum
assuring the hose to be stored nicely flat in the hose layer
container.
Flaking the hose into the hose layer body is an easy
low-labor-intensive task for two persons only. One thousand meters
(6-inch) hose pick up in less then half an hour is normal.
The supply of a HRU is including hydraulic hoses, flow-pressure
control valve and switch-over valve, ready for link-up with the
truck’s hydraulics.
The truck’s PTO-hydraulic transmission (not part of the HRU
supply), is in case of a container installed system, a side
connection from the hook-arm lift-off system.
In case of a hose
layer truck, a small capacity (20 ltr./min. 120 bar) PTO-hydraulic
transmission must be installed on the truck. Also the required
electric 24-V power is taken from the truck’s electrics through a
plug-socket connector.
