Transmission arrangement for a floor surfacing machine comprising a first and second idle pulley, both pivotable around a common pivot axis

A floor surfacing machine comprising:

• a frame that is carried by at least two wheels,
• a combustion engine, and
• a tool holder disc adapted to be driven by the combustion engine,
• wherein the combustion engine comprises a motor axle that is rotatable about a first axis and is connected to a first pulley that is arranged to drive a first endless power transferring means that further is adapted to drive a second pulley that is rotatable about a second axis,
• wherein a first pulley axle is running along the second axis,
• wherein the second pulley further is connected to a third pulley that is mounted closer to the tool holder disc than the second pulley, and that is arranged to drive a second endless power transferring means that further is adapted to drive a fourth pulley that is connected to a second pulley axle that is rotatable about a third axis,
• wherein the third pulley is coaxial with the second pulley along the second axis,
• wherein the second pulley axle is adapted to propel the tool holder disc,
• wherein the first axis, the second axis and the third axis are all adapted to run mutually parallel such that there is a shortest first distance between the first axis and the third axis, such that there is a shortest second distance between the second axis and the third axis, and such that there is a shortest third distance between the first axis and the second axis, and
• wherein the first distance falls below the third distance and the first endless power transferring means has a length that exceeds the length of the second endless power transferring means.