| 摘要 |
The specification describes a rope traction elevator in which the motor axis is arranged axially with the input drive shaft and parallel to the plane of the traction sheave. It is characterized in that in the horizontal plane the gear casing on at least the side of the input drive shaft does not extend beyond the vertical projection of the motor casing. This is best illustrated by Fig. 5 which shows a cross-section of the gear case 28 on the plane cutting the gear case 28 marked in Fig. 2. Fig. 5 shows an ideal contour for the case wall in relation to strength and torsional rigidity for this gear 2. The height h of the external case contour is greater than the width b. In the example shown, the contour of the gear case, which was calculated using the method of finite elements, has four different radii R1-R4 along its perimeter, although the number of radii which flow into each other can be greater or less than four. This results in the wall of the gear case having a cross-section with a shape similar to an oval. The case wall can also be kept relatively thin, which also has a positive effect on the external dimensions and the weight of the gear 2.
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