Silentium Drive — the quiet conveyor system for combine harvesters
“Silentium Drive”, the new innovative conveyor system for combine harvester feeder channels with rubber fabric belts and cam drive eliminates one of the main sources of noise in the combine harvester.
Up to now, a high-speed steel roller chain has been used in the harvester in the feed channel behind the cutterbar, which brings the crop to high speed with steel bars bolted on transversely and feeds it to the threshing units. This causes the chain and conveyor shaft to collide with each other. This creates the typical combine harvester noise, which is a considerable burden on the machine operator and the environment.
“Silentium Drive” for more power and comfort during harvesting
Our “Silentium Drive” is based on a rubber fabric belt with parabolic cams, which replaces the conventional steel roller chain. This cam belt is manufactured in two versions: endless wound or with open ends and a special joining method. Bolts are vulcanized into the belt for an optimal connection between steel strips and belt.
A further challenge is the high maintenance requirement of the steel roller chain used up to now. If not re-tensioned regularly, failures can occur and the combine harvester stops. Wear and tear is also problematic, as both the chain and the sprockets must be constantly monitored. If the combine fails during harvesting, the availability of parts and the replacement time are crucial. Every hour that the harvesting machines stand idle causes further costs.
The “Silentium Drive”, on the other hand, is moved by Broekema N‑type drive wheels that engage with the cams of the rubber belt. The deflection is either by a continuous roller or individual deflection wheels per belt. With our rubber belt innovation, there is therefore no need to re-tension the steel roller chain and the sprockets are replaced by almost wear-free deflection rollers. Only a few components need to be replaced or adapted — an investment that pays off quickly.
Combine harvesters from all well-known manufacturers can be converted to the “Silentium Drive”.
Features of the “Silentium Drive
The “Silentium Drive” increases comfort and driver-friendliness during threshing thanks to its special features. As the steel bars of the chain no longer touch the floor of the manhole, noise emissions are minimised. In addition to eliminating the main source of noise from the combine directly under the driver’s cab, the material flow is also very even and quiet. Thanks to the parabolic rubber-fabric cam belt, the “Silentium Drive” has excellent dynamic strength and pulling power as well as high elasticity in the event of foreign bodies being drawn in.
The advantages of Silentium Drive
The “Silentium Drive” also helps to noticeably reduce maintenance costs:
- The service life of the “Silentium Drive” is significantly longer than that of steel roller chains.
- intake speed and conveying capacity are increased.
- Chain wear reduced to a minimum.
- Drive and deflection wheels are practically wear-free.
- The permanent belt pre-tensioning by rubber fabric makes chain retensioning unnecessary.
- Highest reliability avoids failures and downtime in the field.
- low noise emission to protect the driver and the environment.
- The costs per hectare are reduced.
Over several years the “Silentium Drive” has been professionally developed and extensively tested by Broekema. The hunter company Broekema is a specialist in the development and production of rubber conveyor belts and screen chains with decades of experience in the agricultural machinery industry.