SQUARE BALE---------------------------MAIZE PRESS
MVA 750/1000
PATENTED SYSTEM
LISIBACH---------------------MASCHINENBAU AG
The drive of the entire machine is arranged centrally on the
drawbar. The hydraulic system is driven by a 15 kW
electric motor. Three separate oil circuits supply the
components with oil. This permits minimal energy input and
low oil temperatures enabled by optimal design and firstclass hydraulic components. Power can be supplied
straight from the public grid for an enormous reduction in
operating cost and no unnecessary noise. For field use, a
normal emergency generator can be used. On request, the
press can also be driven by the cardan shaft.
The hydraulic system is centrally and clearly
arranged, permitting an ideal overview of the system
status. Three completely separate oil circuits are
used for the direct control of the individual
components. Each group has a separate pressure
relief valve and a manometer providing information
on the status and power demand of the system at all
times. Over 20 electromagnetic main valves and a
number of additional valves see to the control of the
individual components. Directly next to the valves is
the relay box. Solid state relays attend to the direct
control of the valves.
The entire electronic system of the machine is housed
centrally in a steel cabinet. A PLC processor controls and
monitors the system, permitting program customization at
any time without tiresome manipulation. Important
parameters can be set directly on the display. The
machine can be equipped with a GSM modem on request
for remote maintenance and fault analysis of the entire
system at any location. The control is operated with 24V
DC. All the electronic components are monitored by
residual current circuit breakers. 2 emergency stop
circuits, which bring the machine to an immediate
standstill, are provided for safety.
Clearly arranged switches facilitate machine
operation and inform the user of the operating
status. The display shows the operating status of the
machine at all times and also any fault messages in
case of malfunction. The operator's console allows
simple manual control for setup and servicing. For
normal work this is not necessary. All the functions
can be controlled directly using the operating lever.
Tedious search in a menu display is not needed.
The operator's console with 5 metres of cable is
connected directly to the valve box. This enables
operation, monitoring and manipulation for servicing
from any location.
LISIBACH-----------------------
The maize press can be fed with maize straight from the dosage vehicle,
optionally from the left or right. The maize is filled into the pressing
chamber via a vertical conveyor and a longitudinal conveyor. Only when
the pressing chamber is full, does the maize enter the 8 m³ storage
bunker without the filling operation being interrupted. The storage bunker
is automatically emptied, as required, by the control system. Thus the
forage wagon is emptied withwith any interruption whatsoever and the pressing
chamber is filled in as little
time as possible, irrespective
of the current filling volume.
The filling system regulates
itself
and
guarantees
maximum
pressing
and
wrapping performance.
The maize is filled inbetween the two rams. When the entire pressing
chamber is filled, the pressing operation begins. Two vertically
superposed rams with a maximum pressing force of 25,000 kg each,
press the maize to form the shape wanted.
The pressing chamber is closed
at the back by four covers nested
within one another. For vertical
wrapping, the covers are opened
up and form the guiding surfaces
for the bale. An ejector pushes
the pressed bale out of the
chamber. At the same time four
layers of film are wound over the
covers by a wrapping device. As
the bales are ejected, the film is
stripped off the covers.
In a second step, the bale is enveloped horizontally with
another four layers of film by the wrapping table. As a
result, the bale is bidirectionally snugly enveloped in film
without use of a net. The bale can be cut in slices at a
later stage. The maize not yet needed remains firmly
enclosed by the remaining film.
The angular shape permits simple and compact
transportation and stacking. The bales also permit safe
loading and optimal use of the loading space for
transportation with trailers.
--------MASCHINENBAU
Technical specifications
MVA 750
MVA 1000
6550 mm
2300 mm
3090 mm
3610 mm
4800 kg
Hydr. support, front
Leaf spring suspension
340/65 R18
Hydraulic
Polyester powder
6550 mm
2300 mm
3230 mm
3750 mm
4800 kg
Hydr. support, front
Leaf spring suspension
340/65 R18
Hydraulic
Polyester powder
El. motor 15kW
3x400V
min. 25A, max. 40A
Integrated
5000 mm
Euro 32
El. motor 15kW
3x400V
min. 25A, max. 40A
Integrated
5000 mm
Euro 32
Filling system with storage bunker
Filling storage bunker
Storage bunker capacity
Pressing system
Horizontal wrapper
Vertical wrapper
Integrated
Left and right
8 m³
2 rams
500mm film
750mm film
Integrated
Left and right
8 m³
2 rams
500mm film
750mm film
Pressing chamber dimensions
Pressing chamber volume
Vertical wrapping
Horizontal wrapping
0.8x0.8x1.2m
0.75 m³
4 layers
4 layers
0.9x0.9x1.2m
0.95 m³
4 layers
4 layers
Stand: 45B/h Special: 55B/h
Stand: 33B/h Special: 43B/h
Stand: 72sec Special: 60sec
Stand: 45B/h Special: 55B/h
Stand: 33B/h Special: 43B/h
Stand: 72sec Special: 60sec
Length incl. drawbar
Width
Height, transport position
Height, operation
Weight
Support
Chassis
Tyres
Brake system
Finish/Coating
Drive
Voltage
Power requirements
Direction of rotation changer
Cable length
Plug
Output theoretical
Output practical
Cycle time for 1 bale
Additional equipment
Feeder belt short, hydr. drive
Variant 40km/h
Tractor drive / Generator
Direct filling with tipper
Stationary system without filling system
GSM model for remote maintenance
Radio remote control
Superstretch - film pre-stretcher
Work lighting
LISIBACH---------------------MASCHINENBAU AG
Eistrasse 11, CH-6102 Malters, +41 (0)41 930 02 66, www.lisibach-mb.ch