| 摘要 |
A transmission system (11) is provided comprising a drive pulley (12), at least one driven pulley (13) and an oil wet toothed belt (14). The toothed belt comprises a toothing (14f) and a back (14g), a first portion (14a), wherein the toothing (14f) is coupled to the drive pulley, a second portion (14b) wherein the toothing is coupled to at least one driven pulley, a first taut branch (14c) which develops towards the driving pulley and a second slack branch (14d) which develops towards the driven pulley. The transmission system comprises a fixed containment guide (18) comprising at least a first wall (18a) facing the toothing (14f) and/or the back (14g). The wall is at a distance from the toothed belt comprised between a minimum distance wherein at rest is not in contact with the toothed belt and a maximum distance equal to 5% of the length of one between the taut branch and the slack branch. Preferably the fixed containment guide comprises two walls (18a, 18b) and the distance D between the walls is greater than the height H of the toothed belt (14) and the first and the second walls define a channel (19) for the toothed belt (14). |
