VERVAET Harvester

Contents:

History Tyres
Topper Steering
Lifting unit Motor & Drive
Cleaning Maintenance
Holding Tank Engine and Hydraulics
Cabine Technical Details








History

For almost 30 years, Vervaet has been producing big-tank sugar beet harvesters, which are capable of topping, lifting, cleaning, loading and transporting the sugar beet, in one go and with one driver. It goes without saying that in those years, a lot of experience is gained, where Vervaet constantly improved the machine, giving it more capacity, more cleaning, more reliability, easier handling, and all this with the lowest possible maintenace costs. All this knowledge and experience is incorporated in the latest Vervaet 17-tonnes tanker harvester.

A team of well trained mechanics and a big stock of spare parts, together with the support of Vervaet managment, give you the service and back-up that you've always wanted, but were not able to get elsewhere.

The way we operate, makea it easier for you as owner/driver to lift sugar beet, with the minimum costs possible.


1984

1989







1974


1979

TOPPER

To start with the front; the topper is already something special. The complete casting and the auger trough, are made out of 6 mm hard-wearing steel, to withstand stony conditions. This construction at least triples the toppers lifetime. The flail-shaft has a larger diameter which gives a bigger circumference of the flails. This means that you can operate the topper at lower speeds. (500-600 rev./min.). It is also possible to speed the topper up to 1400 rev/min and shut off the auger, so that the leaf is completely mulched. V-formed caps inside the topper ensure that the mulched leaf is put on rows, between the beet. This is mostly used when opening up a field so the leaf is not obstructing you the second time around.

In very weedy crops or with dead leaves, the extra speed is an advantage because the suction is enormous.

The leaf spreader itself is covered as much as possible, for your and other peoples safety. Speed and position are adjustable from the cab.

Whilst discharing on the move there are three options to save tractor windows from breaking:

1) Fold up the leaf spreader (from the cab)
2) Reduce the speed of the leaf spreader
3) Shut off the auger (integral)

The scalpers are of the one-arm type, with only 1 pivoting point (less maintenace) and are very easy to adjust with one self-locking nut.

For adjutable row-widths, you simply remove an R-clip and slide the complete scalper over, so that you don't need to crawl under the topper to undo bolts etc.

As an option, you can choose hydraulic adjustable row-widths.

A hydraulic driven leaf-belt is an option for conveying leaf straight onto a following trailer.




Vervaet-COMBI-topper


Adjustable scalpers


Leaf belt

Lifting Unit
On the lifter, Vervaet has been using rotating walking shares since 1978.
This system has the unique quality that the shares make a rotational circle in the ground, independently of each other. This way, always one of the two shares make a lifting movement, (20 per second) in contrast with vibrating shares.

Another great advantage of our system is that stones don’t get blocked between the shares.The speed of the lifting shares is adjustable from the cab, driven by double V-belts, which are light,strong and easy to replace.

The lifting elements are mounted on a pivoting shaft, which follows the rows of beet very easily (without bearings) to eliminate root breakage. In total, there are only 24 bearings on the whole unit.

Naturally the lifting unit is served by an automatic depth control.

To make sure that the wheels are not too close to the next row or to a ditch, the lifter can be shifted to the left by 25 cm.
This is ideal in as well the middle as the left position. The pushing-arms stay in line to eliminate twisting in the frame.

The big turbines behind the lifter throw out 50% of the soil, so that the other 4 turbines can clean the beets. The visibility of the lifter is perfect.

Optional:
* 45-50 cm adjustable row width (hydraulic)
* Disc lifter




Lifting unit


Side-shift


Front turbines

Cleaning


Cleaning starts directly after the beet are lifted out of the ground. This is done by the two large turbines (Ø 1,40 m.) behind the lifting elements. Most other systems collect the beet and soil in the middle of the machine where cleaning starts between the front wheels. With the Vervaet, more then 50 % of the soil is already removed at that point.

Afther the 3rd., 4th, 5th, (all Ø 1,40 m.) the beet come to the last turbine (6th), which is used for 3/4 of the entire circoumference.

These 6 turbines give you a very long cleaning route, which can, depending soil and weather conditions, be completely adjusted in speed as opening of the gates etc.

The specification of the turbines (number of spokes) and gates (pig-tails or horizontal), can be chosen by the customer.

All speeds are adjustable from the cab.

As an option, an Axial-roller cleaning system can be fitted, in stead of the 6 th tubine.

These rollers will take out weeds, gras,and more importantly, clay-balls.

We can have all the rollers running in the same direction for lighter soils, where you want the cleaning to be as gentle as possible, or for an occasional stone in the beet-flow.

The standard sixth turbine uses 3/4 of the circumference, which gives you optium, steady cleaning.

The picture shows the horizontal gates. Ofcourse 'pig-tails', for more intens cleaning.


Beet UK - how the harvesters stack up

Harvester

Type

Speed

kph

Surface losses
t/ha

Broken roots
t/ha

Total losses
t/ha

Dirt tare
%

Impact damage

Garford VT640

6-row
T

4.5

0.57

1.01

1.58

8

72

Garford VT640

6-row
T

4.5

0.08

1.42

1.50

9

92

Riecam RBM300s

6-row
SP

6.0

0.15

1.42

1.57

7

93

Vervaet 17t tanker

6-row
SP

5.0

0.16

1.79

1.96

4

94

Holmer Terra-Dos

6-row
SP

6.3

0.36

1.35

1.71

8

98

Matrot M2001

6-row
SP

5.6

0.26

1.39

1.65

7

100

Agrifac /WKM Big Six

6-row
SP

5.3

0.23

2.00

2.23

6

114

Ropa Euro-Tiger

6-row
SP

5.2

0.26

2.00

2.25

5

118

Vervaet Beet Eater

9-row
SP

5.3

0.28

1.29

1.56

6

70

Abstract from: http://www.j-rileybeet.co.uk/field_tests.html







Axial-rollers


Standard 6the turbine

Holding Tank
Via the up-and over elevator, the beet are dropped into the tank.

The elevator itself is situated between the front and rear wheel, so that it never touches the ground in extreme wet conditions.

Unique to the Vervaet, the elevator automaticly moves up and down with the pile of beet inside the tank.

This gives you the following advantages:
1) very little free fall (less damage)
2) tank fills evenly (perfect weight distribution)
3) large holding capacity

With the elevator down, the free fall is kept to a minimum, to prevent beet-damage. The speeds of the roller-bottom and the discharge elevator are independently adjustable.

The very quick discharge (17 tonnes in 30 seconds) gives you a biggeroverall capacity.

The discharge-elevator has a 'swan-neck', to completely fill high trailers.

The sprockets are not running in the spokes, but only in the rubber, wichgives the continental web a longer life time.




Unloading on the heap


Unloading on the go


capacity: 17 tonnes
Cab


When you sit down on the luxury seat, the space and visibility around the machine are immidiately obvious.

From the seat you can see the topping, the lifting, the beet-flow over the turbines and even the rear wheels!

The rear window stays clean because there is no belt throwing the beet in from the back of the tank.

If you look at the dashboard, which is logically placed on the same side as the discharge elevator, you'll find all the functions just where you want them.

The ones you use most are on the drive-handle.

The pressure gauges of all the pumps are placed in the post, so that you have a ready check-up on the complete machine.

The cab is completed with heating, radio-cassette, speed and acre counter, and a tachometre on most functions.

The new cabs give the machine a modern and dynamic appearance

15 work-lights ensure that it never gets too effective dark to operate.


The elektro-hydraulic valves and the good isolation of the cab result in a very low noise-level.

A camera and monitor are a useful option.








Tyres
The front tyres 850-60 x 38 (34 x 38) are a lot bigger than the ones which are normally used 800-65 x 32 (30,5 x 32) resulting in a lower ground pressure than the competition.




links: 800 - 65 * 32
rechts: 850 - 60 * 38



Steering

The Vervaet harvester is provided with 4-wheel steering.
The main steering is, like combines, on the rear wheels which can turn up to 45°.

Together with the front wheels (with 8°) the provide a very small turning circle of 9,7 metre!

Drivers can choose between 2-wheel steering, 4-wheel steering, or crab-steering. On the move, the automatic pilot takes care of the steering, so the driver can concentrate on other major functions like unloading etc. This auto-pilot normally works on the rear wheels, but as an option, it is possible to have auto-pilot on all 4 wheels. This is only recommended in very steep hills.





Engine and Hydraulics

Since the first machines, Vervaet has choosen DAF engines.

This truck engine has a very reliable reputation and a good service network all over Europe.

The 12,5 litre turbo-intercooling gives the machine 380 HP, or even 430 (optional) for very hilly conditions.

The engine is mounted on silent blocks to prevent noise and vibrations.

All functions are hydraulic driven with fast running hydro-motors, their speed reduced by gearboxes, creating maximum torque.

Consequently, the turbines never stop, even when they are touching the ground.

Power loss and oil temperature are kept to a minimum, resulting in a very long lifetime for the hydraulics.

The unique traction control is computer steered and prevents wheel slip, without compressing the oil flow.

All pump pressures are readable from the cab, so the driver has a constant view of how the machine is going.





Maintenance

The engine is very accessible for daily maintenance, such as checking and filling engine oil, coolant, and cleaning the air filtre.

For safety and ease, we fitted steps, so the driver doesn't need to climb on a wheel or a separate ladder.

The standard automatic lubrication system further reduces the daily maintenace to a couple of minutes.

The engine is completely isolated to reduce noise level and give a neat appearance.

A standard air compressor is handy to clean the radiator or inflate the tyres.

The entire machine is built with attention to quality for long service and low running costs.





Technical Details

Engine :

DAF 12,5 litre.

Type : XE 280 or XE 315 (optional).
Hydraulics : Sauer adjustable pumps, Sauer motors on wheels.
Danfoss motors on lifter and turbines.
Topper :

Combi type 0-1400 t/min.

leaf spreader :

Disc,adjustable in speed and height from the cab.

Scalpers :

Depth adjustable.

Lifter :

Walking shares, speed adjustable, 45-50 adjustable (optional). Depth-control left and right.

Cleaning :

6 big turbines (5 x 1,40 m. and 1 x 1,65 m.)

Gates :

"pig-tails"or horizontal gates,adjustable in height.

Elevator :

With automatic height control.

Tank capacity :

17 tonnes

Discharge-elevator :

Continental web, separately adjustable in speed.

Discharge time :

35 seconds.

Discharge height :

2,50 to 4,00 metre.

Forward speed :

1st: 0-10 km/h 2nd.: 0-20 km/h

Tyres:

Front: 850-60 x 38. Rear: 800-65 x 32.

Fuel tank :

700 litre (850 optional).

Noise-Level :

74 dBa.

Steering :

All 4 wheels, enabling crab-steer.

Turning circle :

9,70 m.

Track-witdth :

2,30 m.

Length : 11,80 m.
Height :

4 m.

Weight :

19.150 kg.





For more information you can contact us at:
FRANS VERVAET BV

Braakmanlaan 40
4521 AA Biervliet

Tel. : +31-(0)-115-481710
Fax : +31-(0)-115-482035
Email : verkoop@vervaet.nl