Hydraulic chassis system - roll stabilisation with load compensation
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 distributes the load always equally.
Soil-protective hydraulic chassis system
The new technology in combination with only 1.4 bar tyre inflation pressure is ideal for sustainable land management.
- significantly higher soil protection due to tyre inflation pressure reduced by 1 bar in comparison with euro-Tiger V8-4 - unique in root crop harvesting
- 49 % larger tyre contact area, 33 % less contact pressure thanks to IF1000/55 R32 CerexBib
- significant reduction of load peaks by load transfer: 8% less on the first axle, 37% less on the second axle, 43% less on the third axle
- load distributed evenly over all wheels by networked hydraulics
- on the slope, the load and the centre of gravity of the lower side of the slope are shifted to the top of the slope
- cleaning elements are guided horizontally even on slopes, providing perfect cleaning performance
- soil-protective sugar beet harvesting also on side slopes without requiring increased inflation pressure
- maintains and protects the soil structure, maintaining infiltration capacity and air exchange
Summary: Resources and Soil Protection for Sustainable Land Management
Hydraulic chassis system
Slope compensation up to 10%
The automatic levelling system using six hydraulic cylinders and sensors is unique among 3-axle 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. Soil-protective sugar beet harvesting also on the side slope without additional tyres inflation pressure increase!
Reduced soil pressure
The increased and soil-protective tyres of the new Tiger make him look very imposing. Good soil protection is ensured even with full bunker of about 43 m³ and 30 t by Michelin 800/70 R38 Ultraflex tyres on the front axle and optional Michelin CerexBib IF1000/55 R 32 CFO tyres on the rear axles. The soil is protected alongside with improved damping characteristics at only 1.4 bar of tyre inflation pressure in all six wheels.
The MICHELIN CerexBib IF1000/55 R 32 CFO is the new generation of tyres for sustainable soil protection.