| 摘要 |
According to the invention, a two- or three-stage cylindrical gear mechanism has a single-piece housing (1) which, at the drive input side, has an assembly opening which is closed off by a cover (4, 7) through which an input drive pinion (6) is inserted. The latter acts directly or via a first gear mechanism stage on an intermediate gearwheel (40) of an intermediate shaft (34). The latter supports an intermediate pinion (37) which drives a drive output gearwheel (31) of a drive output shaft (30). Said two shafts can be inserted, as pre-assembled units with associated gearwheels (31, 37) and bearings (26, 28, 35, 36), into associated receiving bores (19, 21) from the assembly opening in one assembly step. Drive output shaft bearings (26, 28) are arranged on both sides of the drive output gearwheel (31). Bearings (35, 36) of the intermediate shaft (34) are also arranged on both sides of the intermediate pinion (37). The two receiving bores (19, 21) intersect one another. There is a free assembly path between the receiving bores (19, 21) and the assembly opening.
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