JP2006046412A - Self-alignment roller bearing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely prevent damage during transportation without increasing cost and days required for manufacture. <P>SOLUTION: An outer ring 2 is divided into a plurality of parts (two parts) at the approximate center in the axial direction. Thus, the inner ring 1, a roller 3, the assembly of a cage 4 and an outer ring 2 are separatable. As a result, the inner ring 1, the roller 3, the assembly of the cage 4 and the outer ring 2 can be separately packaged. Damage thereto is surely prevented without the contact of the outer ring 2 with the roller 3 when subjected to vibration or impact during transportation. The inner ring 1, the roller 3 and the assembly of the cage 4 are wrapped with a tape 7 to continuously encircle their circular portions. Thereby, the inner ring 1 and the roller 3 are put into contact with each other at all times, the inner ring 2 and the roller 3 are moved in contact with each other at all times even when subjected to vibration or impact during transportation, and damage thereto is surely prevented during transportation without the collision of the inner ring 1 with the roller 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a self-aligning roller bearing.

  Since self-aligning roller bearings have clearance and alignment, the inner and outer rings are considerably displaced during transportation compared to other bearings, and measures to prevent damage during transportation are particularly necessary. Sometimes.

In Patent Document 1, an annular elastic member is inserted between adjacent rollers, and the inner ring or outer ring and the roller are restrained to prevent the damage.
JP 2003-322157 A

  However, in Patent Document 1, production of the annular elastic member is expensive, and it takes time to insert the annular elastic member into the self-aligning roller bearing. There is a problem that it increases.

  The present invention has been made in view of the circumstances as described above, and provides a self-aligning roller bearing capable of reliably preventing damage during transportation without increasing costs and production days. For the purpose.

In order to achieve the above object, a self-aligning roller bearing according to claim 1 of the present invention is a self-aligning roller in which a large number of rollers as rolling elements are interposed between an inner ring and an outer ring so as to be capable of rolling. In roller bearings,
The outer ring is divided into a plurality of parts at substantially the center in the axial direction.

  The self-aligning roller bearing according to claim 2 of the present invention is characterized in that the divided outer ring has a spacer between them.

  According to the present invention, since the outer ring is divided into a plurality of parts at the approximate center in the axial direction, the inner ring / roller / cage assembly and the outer ring can be separated. Therefore, during transportation, the inner ring / roller / cage assembly and the outer ring can be packaged and packed separately.

  In this case, even if vibration or impact is applied during transportation, the outer ring portion does not come in contact, and damage can be reliably prevented.

  Further, with respect to the assembly of the inner ring, the roller, and the cage, the inner ring is always in contact with the inner ring by winding the tape so as to continuously surround the arc-shaped portion. For this reason, even if it receives vibrations or impacts during transportation, the inner ring part always moves (displaces) in a contact state, and the inner ring part does not collide, and damage during transportation can be reliably prevented.

  When the above spherical roller bearing is used, the inner ring / roller / retainer assembly and the outer ring can be separated from each other. There is also an advantage that internal investigation becomes easy.

  In addition, according to the present invention, the divided outer ring has a spacer between them, so that when the self-aligning roller bearing is packaged, the spacer is removed. By removing this spacer, the internal clearance of the self-aligning roller bearing becomes zero, so that even when subjected to vibration or impact during transportation, the rollers will be restrained by the raceway surface of the inner and outer rings, and damage will be ensured. Can be prevented.

  Hereinafter, a self-aligning roller bearing according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1A is a cross-sectional view of the self-aligning roller bearing according to the first embodiment of the present invention, and FIG. 1B is an assembly of an inner ring, a rolling element (roller), a cage, and an outer ring. Is a cross-sectional view showing a state where is divided, and (c) is a cross-sectional view showing an example of packaging / packaging during transportation.

  As shown in FIG. 1A, in a self-aligning roller bearing, a large number of rollers 3 and 3 are interposed between an inner ring 1 and an outer ring 2 so as to be freely rotatable in two rows. The cage 4 is mounted on the two rows of rollers 3 and 3 so as to hang over.

  In the present embodiment, the outer ring 2 is divided into a plurality (two pieces) at the approximate center in the axial direction.

  Therefore, as shown in FIG. 1B, the assembly of the inner ring 1, the roller 3, and the cage 4 and the outer ring 2 can be separated. Therefore, during transportation, the assembly of the inner ring 1, the roller 3, and the cage 4 and the outer ring 2 can be packaged and packed separately.

  That is, as an example of packaging / packaging, as shown in FIG. 1 (c), the inside of the packaging box 5 is divided into two by an intermediate plate 6, and the assembly of the inner ring 1, the roller 3, the cage 4, and the outer ring 2. And in a separate room.

  In this case, even if vibration or impact is applied during transportation, the outer ring 2 and 3 do not come into contact with each other, and damage can be reliably prevented.

  Further, with respect to the assembly of the inner ring 1, the roller 3, and the cage 4, the inner ring 1 is always in contact with the inner ring 1 by winding the tape 7 so as to continuously surround the arc-shaped portion. Therefore, even when subjected to vibration or impact during transportation, the inner ring 2 and 3 always move (displace) in a contact state, and the inner ring 1 and 3 do not collide, thus reliably preventing damage during transportation. can do.

  When the above spherical roller bearings are used, the assembly of the inner ring 1, the roller 3 and the cage 4 and the outer ring 2 can be separated, so that during the periodic inspection of the spherical roller bearings, Also has the advantage of making it easier to investigate the interior of the bearing.

(Second Embodiment)
FIG. 2A is a sectional view of a self-aligning roller bearing according to a second embodiment of the present invention, and FIG. 2B is a sectional view showing an example of packaging / packaging during transportation.

  As is apparent from the drawings, the second embodiment has the same basic structure as that of the first embodiment described above, and only differences will be described.

  In the present embodiment, the divided two outer rings 2 have a spacer 8 between them. The spacer 8 is detachable, and, as will be described later, the bearing internal axial gap becomes zero with the spacer 8 removed, so that the width of the spacer 8 is at least larger than the internal axial gap of the bearing. Set larger.

  Therefore, in this embodiment, when the self-aligning roller bearing is packaged, the spacer 8 is removed as shown in FIG. By removing this spacer 8, the internal clearance of the self-aligning roller bearing becomes zero, so that even when subjected to vibration or impact during transportation, the roller 3 is restrained by the raceway surfaces of the inner and outer rings 1 and 2, The damage can be surely prevented.

  In addition, this invention is not limited to embodiment mentioned above, A various deformation | transformation is possible.

(A) is sectional drawing of the self-aligning roller bearing which concerns on 1st Embodiment of this invention, (b) is an inner ring, a rolling element (roller), the assembly of a cage, and an outer ring | wheel divided | segmented FIG. 6C is a cross-sectional view showing an example of packaging / packaging during transportation. (A) is sectional drawing of the self-aligning roller bearing which concerns on 2nd Embodiment of this invention, (b) is sectional drawing which shows an example of the packaging and packing at the time of transport.

Explanation of symbols

1 Inner ring 2 Outer ring 3 Roller 4 Cage 5 Packing box 6 Middle plate 7 Tape 8 Spacer

Claims (2)

In a self-aligning roller bearing in which a large number of rollers as rolling elements are rotatably interposed between an inner ring and an outer ring,
The self-aligning roller bearing according to claim 1, wherein the outer ring is divided into a plurality of parts at substantially the center in the axial direction.   The self-aligning roller bearing according to claim 1, wherein the divided outer ring has a spacer therebetween.

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