Tool holder for holding tool of e.g. pebble grinding or soil mixing device, has support surface to support tool on tool holder to allow recovery of effort between tool and tool holder in direction perpendicular to longitudinal axis of screw

摘要

The tool holder (2) has a tool receiving and fixing unit including a fixation screw that fixes a grinding or soil mixing tool (3) on the tool holder. A side support surface (13) supports the tool on the tool holder so as to allow recovery of effort between the tool and the tool holder in a direction perpendicular to a longitudinal axis of the fixation screw and in two different directions. Surfaces of positioning pins are engaged in corresponding housings of the tool. An independent claim is also included for a grinding or soil mixing device comprising a drum.