METHOD AND DEVICE FOR PREVENTING OR RELEASING A BLOCKING CAUSED BY LOGS FED TO A CHIPPER THROUGH A FEEDING CHUTE

摘要

The invention relates to procedures and arrangements for preventing or releasing a blockage occurring in a flow of tree trunks (3) supplied to a wood chipper (2) via a feed hopper (1), and for securing an uninterrupted flow of timber to the chipper. The inventive procedure is characterized by providing one or several lifting means (4), which are insertable to project through openings (5) defined in the hopper (1), said lifting means (4) being inserted momentarily to raise tree trunks wedged in the hopper and/or controlled momentarily for limiting the amount of tree trunks supplied to the chipper (2).