Traction machine main-shaft bearing

Abstract

The present invention provides a main shaft bearing of a dragging machine, and comprises an outer ring, a spherical roller, an inner ring and a retaining frame. The spherical roller is arranged between the outer ring and the inner ring through the retaining frame; a sealing ring is arranged between the two sides of the outer ring and the inner ring; one end of the sealing ring is fixed in the sealing groove of the outer ring, and the other end is tightly stuck on the chamfer angle surface of the inner ring. The sealing ring is composed of a framework and a runner main body fixed on the both ends of the framework, and the chamfer angle surface on the both sides of the inner ring is a spherical chamfer angle surface. Because the bearing adopts a self-aligning roller structure, the bearing force of the bearing is greatly enhanced, the security coefficient is effectively enhanced when is utilized on the same elevator. At the same time, the adoption of a sealing structure and the preliminary filling of the long life lubricating grease enable the bearing to be separated from the ambient environment, and the service life and the maintenance period of the bearing are greatly lengthened.

Description

technical field [0001] The invention relates to a bearing applied to an elevator traction machine, which is a main load bearing installed on the main shaft of the traction machine. Background technique [0002] Two types of bearings are usually used on the main shaft of the existing elevator traction machine. The structure is shown in Figure 1 and Figure 2. Figure 1 is a deep groove ball bearing with double-sided seals. The advantage is that the bearing has its own sealing device. , there is no need to set a sealing structure around the bearing, and the bearing has been pre-filled with grease before installation, but the disadvantage is that the bearing capacity of the bearing is small, and the grease cannot be replenished during the maintenance of the bearing. [0003] Accompanying drawing 2 is a kind of self-aligning roller bearing, and advantage is that carrying capacity is big, and shortcoming is that sealing device should be designed around the bearing, and lubricating ...

AI Technical Summary

Problems solved by technology

[0002] Two types of bearings are usually used on the main shaft of the existing elevator traction machine. The structure is shown in Figure 1 and Figure 2. Figure 1 is a deep groove ball bearing with double-sided seals. The advantage is that the bearing has its own sealing device. , there is no need to set a sealing structure around the bearing, and the bearing has been pre-filled with grease before installation, but the disadvantage is that the bearing capacity of the bearing is small, and the grease cannot be replenished during the maintenance of the bearing

[0003] Attachment 2 is a self-aligning roller bearing, which has the advantage of large load capacity, but the disadvantage is that a sealing device should be designed around the bearing, and grease should be replenished regularly

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