| 摘要 |
PCT No. PCT/EP95/03879 Sec. 371 Date Jul. 10, 1996 Sec. 102(e) Date Jul. 10, 1996 PCT Filed Sep. 30, 1995 PCT Pub. No. WO96/11161 PCT Pub. Date Apr. 18, 1996The invention concerns a lifting equipment drive consisting of a drive motor, a brake (6) and a dual-stage planetary transmission (9). Both planetary gear sets (8, 10) have helical gearing. The sun gear (15) of the second planetary gear set (10) has a floating mounting in a hub carrier (17) or a hub (21, 23) via a bearing (16) which takes up axial and radial forces. The suggested set-up reduces the axial installation length. The sun gears (7, 15) of the planetary gear sets (8, 10) can adapt to various load ratios. The helical gearing of the planetary transmission (9) prevents low frequency vibrations which could be transmitted into the lift, particularly for long cable lengths, where they could be detected as a disturbing humming noise. |
