Allied HO-PAC 1000 Series, Техническое руководство, Страница: 7 / 50

1000 Series Ho-Pac
SECTION 2.0
OVERVIEW
The Allied Ho-Pac is a boom-mounted,
hydraulic powered, vibrating plate
compactor and driver. It is used for soil
compaction and sheet/pile installation. The
Ho-Pac is typically mounted on either a
rubber tired or track construction vehicle.
The Allied 1000 series Ho-Pac is effective
in compacting materials up to 4 foot lifts.
Compaction results are dependent on soil
type, moisture content, compaction time
and operational technique. Soils with 50%
or more granular content are the most
responsive to vibration compaction.
Optimum moisture content is also critical
to achieving maximum compacted
densities of fill material. Fill materials
may need conditioning prior to
compaction.
The Allied Ho-Pac vibrating compactor
consists of the following major
subassemblies:
The DYNAMIC ASSEMBLY includes the
hydraulic motor, bearings, eccentric mass,
housing frame and base plate. This
assembly generates and transfers the
vibratory energy to the soil.
The SUSPENSION SYSTEM has spring
mounts that suspend and isolate the
Dynamic Assembly from the Mounting
Frame.
The MOUNTING FRAME houses the
Suspension System and mounts to the
boom of the carrier.
The HYDRAULIC CONTROL VALVE is
a multi-function, hydraulic control valve
that regulates hydraulic flow and protects
the Ho-Pac from excessive hydraulic
pressures and flows. The specific valve
functions are:
•
Flow control: The valve limits the
oil flow to optimize Ho-Pac
operation and longevity. Excess
flow results in excessive motor
speed and shortens bearing and
motor life.
•
Pressure control: The valve limits
the operating pressure to protect the
Ho-Pac motor from damage caused
by excessive pressure. The relief
pressure is pre-set to match the
motor’s maximum operating
pressure plus 200 psi (14 bar).
•
Anti-cavitation circuit: The valve
controls the Ho-Pac motor and
eccentric deceleration. Without
this circuit, abrupt changes in the
return flow from the Ho-Pac to the
carrier can cause damaging
pressure spikes.
•
Return line check valve: The valve
prevents reverse flow to the
hydraulic motor and provides a
nominal back-pressure to insure the
proper operation of carrier
mounted, flow control valves.
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