Harvesters and forwarders for hands-on forest owners

Forest owners who manage and sometimes also harvest their own forests are making ever-higher demands and expect contractors not to disrupt their woodlands more than absolutely necessary.

“Demand is growing for professional small-scale technology,” says Linus Bergman of the machinery manufacturer Hypro.

Hypro is known for its tractor-mounted processors. But at SkogsElmia 2019 the company presented a complete machine system, consisting of a control and measuring system that serves both an advanced timber trailer and a trailer with a two-grip harvester head. Just swap out the trailers and your agricultural tractor switches from a forwarder to a harvester.

The harvester trailer is equipped with a crane with a grapple saw, to fell and move the tree stems. There is also a processor that delimbs and bucks. The combination acts as a two-grip harvester, which was a common type of machine in professional forestry into the 1990s.

The forwarder trailer is called the HV14 and has a load capacity of 14 tonnes. It now comes equipped with a more powerful and longer crane with a 9.4-metre reach.

Both trailers are controlled by the same system, developed by Hypro using hardware by Danfoss.

“The software is adapted for DIY forest owners but has many of the functions found on large forest machines,” Bergman says.

Demand has increased strongly in recent times. Outside Sweden, the customers are mainly professional contractors but in Sweden they are evenly split between DIY forest owners and contractors. The reason behind the demand, says Bergman, is that private forest owners want smaller machines that don’t cause so much damage in their woods.

Published
6/6/2019
Images
Lindus Bergman with the control and measuring system developed by Hypro.
Lindus Bergman with the control and measuring system developed by Hypro.
The forwarder trailer loads 14 tonnes and has a crane with a 9.4-metre reach.
The forwarder trailer loads 14 tonnes and has a crane with a 9.4-metre reach.
The harvester trailer is equipped with a crane, grapple saw and processor.
The harvester trailer is equipped with a crane, grapple saw and processor.