Videoaufnahmen des patentierten hydraulischen Fahrwerksystems während der Fahrt am Vorgewende

Das mehrfach ausgezeichnete hydraulische Fahrwerksystem R- Soil Protect mit Hangausgleich und Wankstabilisierung wurde im Tiger 6S nochmals weiterentwickelt. Im Tiger 6S ist zusätzlich ein 3-Achsen-Gyroskop mit Beschleunigungsmessung zur Fliehkraftkompensation für eine nochmals feinfühligere Neigungsregelung integriert. 

Hightech Maschine mit Fahrwerk für nachhaltigen Bodenschutz

Gegenüber früheren Fahrwerken von 3-achsigen Rübenrodern, bei denen die mittlere Achse fest mit dem Rahmen verschraubt ist, reduziert sich das Wanken der Maschine auf ein Drittel! Grund dafür ist die hydraulische Verbindung der Zylinder an Vorder- und Hinterachsen einer Seite, so dass Bodenunebenheiten an einem Rad in der Höhendifferenz nur zu 33 Prozent auf den Rahmen wirken. Durch die Reduktion des Wankens am Chassis verbessert sich gleichzeitig die Reihen- und Tiefenführung des Rodevorsatzes, da der Rahmen ausgemittelt zur Stellung der drei Achsen steht. 

(Video: Ausschnitt aus der Doku des WELT Nachrichtensenders)

Soil-protective hydraulic chassis system with Ultraflex tyre technology

Low tyre inflation pressure for sustainable land management

ROPA R-Soil Protect is the combination of a soil-protective, hydraulic chassis system with MICHELIN CerexBib tyre technology.This soil protection concept was awarded a silver medal at Agritechnica in Hanover. It only requires 1.4 bar tyre pressure and it is available as an option in the Tiger 6S. The synergy of the load-balancing hydraulic chassis with the new generation of MICHELIN IF1000/55 R32 CerexBib tyres offers even more contact surface with sustained soil protection and significantly reduced contact pressure.

R-Soil Protect

Hydraulic chassis system - roll stabilisation with load compensation, patented

ROPA has developed an innovative chassis concept with an oscillating front axle in conjunction with two hydraulically supported rear axles specially for the flagship Tiger. Compared to the chassis on previous 3-axle beet harvesters (with the central axle fixed to the frame), this reduces the sway of machine by one third! The reason for the improvement is the hydraulic connection of the cylinders at the front and rear axles on one side, so unevenness at one wheel at a different level only affects the frame by 33 per cent compared to the previous system. Thanks to the reduction of the chassis swing, the row and depth control are improved simultaneously, as the frame is averaged to the position of three axles. The hydraulic connection of the axles always distributes the load equally over all 6 wheels.

The hydraulic chassis system minimizes tyres load and ground pressure, thus ensuring further reduction of tyre inflation pressure.

Animation shows Tiger 5, chassis identical to Tiger 6S.

Increased soil protection with significantly reduced load peaks

The chassis of the Tiger 6 reduces the load peaks by

- 8% on the 1st axle

- 37 % on the 2nd axle

- 43 % on the 3rd axle

Hydraulic chassis system

Slope compensation up to 10%

The automatic slope compensation via six hydraulic cylinders and sensors is also unique among 3-axle sugar beet harvesters. The chassis is kept completely horizontal for up to 10 percent side slope. The gravity centre and, thus, the load of the wheels on the slope bottom side are shifted to the slope top side.

Centre of gravity and soil pressure compensation

The track depth of the wheels on the slope bottom side is substantially reduced, the infiltration capacity is retained, thus significantly reducing erosion risk during heavy rains.
The slope stability and traction increase greatly, the risk of tipping over is considerably reduced alongside with increased driving comfort.

Stepless CVR gearbox for efficient power transfer

Direct power transmission with cardan shafts ensures even traction at all wheels with very high torque

As a unique selling proposition on the market of 3-axle sugar beet harvesters, the Tiger has a direct power transmission via directly linear situated cardan shafts from traction drive to both rear axles and front axle, which is a great advantage for better traction in changing or difficult soil and harvesting conditions. Thanks to hydraulic chassis the load is always distributed evenly.

Stepless CVR gearbox for efficient power transfer

The new stepless traction drive was specifically developed by ROPA, Omsi and Bosch-Rexroth for the ROPA Tiger with its high drive power. The "constant variable ROPA" gearbox (CVR) consists of three hydraulic motors on a compound gearbox and is located between the engine compartment and the third axle. The maximum speed of 40 km/h can be reached by the Tiger 6S at an extremely economical 1,200 rpm. Harvesting in the field requires an engine speed of only 1,100 rpm. Depending on power requirements the rotational speed of the Tiger is automatically regulated up to 1,650 rpm. The multi-disk differential brakes integrated into the axles (protected from dirt) running in oil bath "tame" the Tiger as required.