JP2015135143A - Assembling jig and assembling method of tapered roller bearing, and inner ring assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembling jig and an assembling method of a tapered roller bearing, with which the tapered roller bearing can be assembled in a state that a small flange part of an inner ring is directed to a lower side in a vertical direction, even when using a cage having a plurality of segments, and to provide an inner ring assembly.SOLUTION: An assembling jig 4 includes: a dummy outer ring 6 on which a tapered roller 2 is mounted; an inner ring placing member 7 which maintains an inner ring 1 in a state that a small flange part of the inner ring is directed to a lower side in a vertical direction; an inner ring holding member 8 which holds an end of the inner ring 1 at a large-diameter side; and a segment pressing member 9. The segment pressing member 9 has a plurality of comb-shaped members 91, and accommodates the tapered roller 2 at a notch of each comb-shaped member 91. Each comb-shaped member 91 is fastened to the inner ring holding member 8 by using a bolt, a column part of a segment 31 which holds the tapered roller 2 is pressed to a side of the inner ring 1 by a segment engagement part 95 of each comb-shaped member 91, and the tapered roller 2 is located on an outer peripheral conical raceway surface 11 of the inner ring 1.

Description

  The present invention relates to a jig for assembling a tapered roller bearing, and also relates to a method for assembling a tapered roller bearing. The present invention also relates to an inner ring assembly including an inner ring, a cage having a plurality of segments, and a plurality of tapered rollers.

  Conventionally, as a tapered roller bearing, there is one described in Japanese Patent Application Laid-Open No. 2007-21833 (Patent Document 1). This tapered roller bearing is installed in a wind power generator. The tapered roller bearing includes an outer ring, an inner ring, a plurality of tapered rollers, and a cage. The cage is composed of a plurality of arc-shaped segments, and each segment holds a plurality of tapered rollers. It has become.

  For large tapered roller bearings used in wind power generators and the like, it is known that it is difficult to produce an annular integrated cage. In the above tapered roller bearing, the cage is composed of a plurality of arc-shaped segments, so that the tapered rollers can be held by the cage, the contact between the tapered rollers is prevented, and the tapered rollers roll smoothly. I have to.

  In the wind power generator, the tapered roller bearings are arranged at two locations on the rear side and the front side of the main shaft. In the two tapered roller bearings, the small end faces in the axial direction of the inner rings face each other in the axial direction of the main shaft. The two tapered roller bearings for the main shaft are assembled in a state where the central axis of the inner ring coincides with the vertical direction.

  Since the tapered roller bearing for the main shaft is a large-sized bearing, the inner ring has a large weight, and it is not realistic to flip the inner ring up and down at the customer or the like during assembly of the tapered roller bearing. Therefore, the tapered roller bearing on the rear side is normally assembled with the end on the small diameter side of the outer circumferential conical raceway surface in the axial direction of the inner ring facing downward in the vertical direction, The conical raceway surface is assembled in a state where the diameter increases as it goes upward in the vertical direction.

  Therefore, the tapered roller bearing on the rear side must support the tapered roller in an unstable state inclined at the radially outer side larger than the small flange portion at the small flange portion of the inner ring during assembly. Therefore, when a non-annular retainer having a plurality of segments is used, there is a problem that the tapered roller falls down due to gravity during assembly and is easily dropped.

JP 2007-211183 A

  In view of the above, an object of the present invention is to provide a tapered roller bearing in a state where the end surface of the inner ring in the axial direction of the inner ring faces the lower side in the vertical direction even when a non-annular cage having a plurality of segments is used. An object of the present invention is to provide a jig and a method for assembling a tapered roller bearing that can be assembled smoothly.

  Another object of the present invention is to provide a tapered roller even in a state where the end surface of the inner ring in the axial direction of the inner ring faces the lower side in the vertical direction even though it has a non-annular cage having a plurality of segments. An object of the present invention is to provide an inner ring assembly that does not leave the inner ring.

In order to solve the above problems, an assembly jig for a tapered roller bearing according to the present invention comprises:
An assembly jig used for assembling a tapered roller bearing including a cage having a plurality of segments,
A conical inner peripheral surface, a flange portion positioned on the small-diameter side in the axial direction of the conical inner peripheral surface, and substantially extending in a radial direction of the conical inner peripheral surface and positioned at an end portion on the small-diameter side in the axial direction An annular dummy outer ring having a mounting surface;
A small-diameter-side inner peripheral surface having a shape corresponding to the outer peripheral surface of the small-diameter end of the inner ring of the tapered roller bearing, and a small-end surface receiver connected to one axial end of the small-diameter-side inner peripheral surface An inner ring mounting member having a stop surface and a mounting surface that is positioned on one side in the axial direction from the small end surface receiving surface and extends in the radial direction of the inner peripheral surface corresponding to the small diameter side;
A large-diameter side corresponding surface having a shape corresponding to at least a part of an outer peripheral surface of an end portion on the large-diameter side of the inner ring, a fixing portion for fixing an end portion on the large-diameter side of the inner ring, and a large diameter of the inner ring An inner ring holding member having a plurality of screw holes extending substantially in the radial direction of the inner ring in a state where the end portion on the side is fixed to the fixing portion;
Each comb-shaped member has a plurality of comb-shaped members, and each of the comb-shaped members extends from an arc-shaped portion having an arc shape and one end in the axial direction of the arc-shaped portion to one side in the axial direction. And a plurality of segment engaging portions that are spaced apart from each other in the circumferential direction of the arc-shaped portion, and each of the arc-shaped portions has a screw hole that penetrates the arc-shaped portion in the radial direction. And a segment pressing member.

Further, the method for assembling the tapered roller bearing of the present invention includes:
The retainer having an inner ring of a tapered roller bearing, a plurality of tapered rollers, a plurality of segments, each segment having one or more pockets for accommodating one or more of the tapered rollers, and the cone according to claim 1. A member preparation step of preparing a roller bearing assembly jig;
A dummy outer ring placement step of placing the placement surface on the dummy outer ring on a horizontal surface;
An inner ring placement member placement step of placing the placement surface on the inner ring placement member on the horizontal plane; and
A tapered roller housing step of housing the tapered roller in each pocket of each segment;
After the dummy outer ring placing step, the segments in which the tapered rollers are accommodated in all the pockets are positioned on the inner circumferential surface of the dummy outer ring with the rolling surfaces of the tapered rollers in the pockets. A segment placing step for placing the tapered outer ring on the dummy outer ring so that the small end surface of the tapered roller is locked to the flange of the dummy outer ring;
The outer peripheral surface of the end on the small diameter side of the inner ring is brought into contact with the inner peripheral surface corresponding to the small diameter side of the inner ring mounting member, and the small end surface of the inner ring is brought into contact with the small end surface receiving surface of the inner ring mounting member. An inner ring placing step of placing the inner ring on the inner ring placing member so as to be placed;
In a state where at least a part of the outer peripheral surface of the end portion on the large diameter side of the inner ring is in contact with the large diameter side corresponding surface of the inner ring holding member having a shape corresponding to at least a part of the inner ring, An inner ring holding step of fixing an end portion on the large diameter side to the fixing portion of the inner ring holding member;
After the inner ring placing step, each segment engaging portion of the comb-shaped member is overlapped in the radial direction of the inner ring with the column portion of the segment in which the tapered rollers are accommodated in all the pockets. The fastening member is screwed into the screw hole of the arc-shaped portion and the screw hole of the inner ring holding member, and the comb-like member is fastened to the inner ring holding member, whereby the segment engaging portion A roller raceway surface disposing step of moving the segment to the outer peripheral conical raceway surface side of the inner ring and positioning each tapered roller held by the segment on the outer peripheral conical raceway surface.

The inner ring assembly of the present invention is
An inner ring having an outer circumferential conical raceway surface;
A cage having a plurality of segments, each segment having one or more pockets;
A tapered roller housed in the pocket of each segment and positioned on the outer peripheral conical raceway surface;
A large diameter side corresponding surface with which at least a part of an outer peripheral surface of an end portion on the large diameter side of the inner ring abuts, a fixed portion to which an end portion on the large diameter side of the inner ring is fixed, and a diameter of the inner ring. An inner ring holding member having a plurality of screw holes extending in the direction;
Each comb-shaped member has a plurality of comb-shaped members, and each of the comb-shaped members extends from an arc-shaped portion having an arc shape and one end in the axial direction of the arc-shaped portion to one side in the axial direction. And a plurality of segment engaging portions that are spaced apart from each other in the circumferential direction of the arc-shaped portion, and each of the arc-shaped portions has a screw hole that penetrates the arc-shaped portion in the radial direction. A segment pressing member in which at least a part of each segment engaging portion is in contact with the radially outer end surface of the column of the segment;
And a fastening member that is screwed into the screw hole of the inner ring holding member and the screw hole of the segment pressing member to fasten the segment pressing member to the inner ring holding member.

  In this specification, when referring to the circumferential direction, axial direction, or radial direction of the arc-shaped portion, the circumferential direction, axial direction, or radial direction does not change the curvature of the arc-shaped portion. It means the circumferential direction, the axial direction, or the radial direction of the virtual annular member formed by extending in the direction. Further, the column portion of the segment refers to a columnar portion that blocks contact between the tapered rollers adjacent in the circumferential direction in the segment.

  According to the assembling jig, the assembling method and the inner ring assembly of the present invention, the segment engaging portion of the segment pressing member can press the column portion of the segment to the inner ring side, and the tapered roller in the segment pocket is moved to the outer peripheral cone of the inner ring. It can be pressed to the raceway side. Therefore, even when a non-annular retainer having a plurality of segments is used and the end surface of the inner ring in the axial direction on the small collar side is directed downward in the vertical direction, the tapered rollers in the pockets are outer peripheral cones. There is no separation from the raceway. Therefore, in the case of using a non-annular cage having a plurality of segments, and a tapered roller bearing that requires assembly in a state where the end surface of the inner ring in the axial direction is directed downward in the vertical direction. Even if it exists, it can be assembled smoothly.

  Further, according to the assembling jig, assembling method and inner ring assembly of the present invention, the small ring side of the inner ring is disposed below the vertical direction without providing a special mechanism for engaging the cage segments with each other. As it is, the tapered roller bearing can be assembled. Therefore, the manufacturing cost of the cage segment does not increase, and the man-hour for manufacturing the cage segment does not increase.

  According to the present invention, even when a non-annular retainer having a plurality of segments is used, a tapered roller bearing with the end surface of the inner ring in the axial direction on the small collar side facing downward in the vertical direction. The assembly jig and assembly method for the tapered roller bearing can be realized. Further, according to the present invention, the tapered roller has a non-annular retainer having a plurality of segments, but the end surface of the inner ring in the axial direction of the small collar portion faces the lower side in the vertical direction. An inner ring assembly that does not detach from the inner ring can be realized.

It is a schematic diagram which shows the main axis | shaft of the wind power generator extended in the perpendicular direction, the inner ring | wheel of a front side tapered roller bearing, and the inner ring | wheel of a rear side tapered roller bearing. It is a figure which shows one state in the middle of the assembly of a tapered roller bearing. It is a figure explaining the structure of a holder | retainer. It is a perspective view of a comb-shaped member. It is a figure which shows the state after all the tapered rollers are located in the outer peripheral cone track surface of an inner ring | wheel.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  The tapered roller bearing disposed on the main shaft of the wind power generator is usually assembled with the main shaft extending in the vertical direction.

  FIG. 1 is a schematic diagram showing a main shaft 10 of a wind power generator extending in a vertical direction, an inner ring 100 of a front side tapered roller bearing, and an inner ring 1 of a rear side tapered roller bearing.

  As shown in FIG. 1, the end surface on the small diameter side of the outer circumferential conical raceway surface 121 in the axial direction of the inner ring 100 on the front side and the end surface on the smaller diameter side of the outer circumferential conical raceway surface 11 in the axial direction of the inner ring 1 on the rear side are: It faces the axial direction of the main shaft 10. Further, with the main shaft 10 extending in the vertical direction, the inner ring 1 on the rear side is located above the inner ring 100 on the front side in the vertical direction.

  As shown in FIG. 1, the outer peripheral conical raceway surface 11 of the rear inner ring 1 has an outer diameter that increases upward in the vertical direction. Hereinafter, in the state where the inner ring 1 on the rear side is shown in FIG. 1, that is, in the state where the outer peripheral conical raceway surface 11 of the inner ring 1 on the rear side increases in the vertical direction, the outer diameter increases. How to assemble the tapered roller bearing will be described.

  FIG. 2 is a view showing a state during the assembly of the rear side tapered roller bearing. In the present embodiment, a rear side tapered roller bearing (hereinafter simply referred to as a tapered roller bearing) is assembled as follows.

  With reference to FIG. 2, a member preparation process is first performed. In this member preparation step, an inner ring 1 of a tapered roller bearing, a plurality of tapered rollers 2, a cage 3, and an assembly jig 4 are prepared.

  FIG. 3 is a view for explaining the structure of the cage 3. FIG. 3 is an overhead view showing a part of the tapered roller bearing, and shows only the inner ring 1, the cage 3 and the plurality of tapered rollers 2. As shown in FIG. 3, the cage 3 has a plurality of segments 31. Each of the segments 31 is the same. The plurality of segments 31 are arranged so as to overlap the outer circumferential surface 15 of the inner ring 1 in the circumferential direction of the outer circumferential surface 15. When each segment 31 is disposed on the outer peripheral surface 15 and the segment 31 is viewed from the outside of the outer peripheral surface 15 in the axial direction, each segment 31 has an arc shape. The plurality of segments 31 are combined with each other to form a substantially annular structure.

  As shown in FIG. 3, each segment 31 has a box shape without an upper surface and a lower surface. The tapered roller 2 is accommodated in the box portion. The inner surface of the box portion of each segment 31 constitutes a pocket 32. Each segment 31 has only one pocket 32, and each segment 31 accommodates one tapered roller 2 in the pocket 32.

  Referring again to FIG. 2, the assembly jig 4 includes a dummy outer ring 6, an inner ring mounting member 7, an inner ring holding member 8, and a segment pressing member 9. The dummy outer ring 6 is an annular member. The dummy outer ring 6 has a conical inner peripheral surface 61, a flange portion 62, and a placement surface 63. The flange portion 62 is located on the small diameter side in the axial direction of the conical inner peripheral surface 61. The placement surface 63 is located at the end portion on the small diameter side in the axial direction. The mounting surface 63 extends in the radial direction of the substantially conical inner peripheral surface 61. The placement surface 63 constitutes an end surface on one side of the dummy outer ring 6 in the axial direction.

  The inner ring mounting member 7 has an integral structure. The inner ring mounting member 7 has a small diameter side corresponding inner peripheral surface 71, a small end surface receiving surface 72, and a mounting surface 73. As shown in FIG. 2, the small diameter side corresponding inner peripheral surface 71 has a shape corresponding to the outer peripheral surface 15 of the end portion on the small diameter side of the inner ring 1. The small end surface receiving surface 72 is connected to one end portion in the axial direction of the inner peripheral surface 71 corresponding to the small diameter side. The small diameter side corresponding inner peripheral surface 71 and the small end surface receiving surface 72 have shapes corresponding to the outer surfaces (consisting of the outer peripheral surface and the end surface) of the end portion on the small diameter side of the outer peripheral conical raceway surface 11 in the axial direction of the inner ring 1. doing. The placement surface 73 is located on one side in the axial direction with respect to the small end surface receiving surface 72. The placement surface 73 described above extends in the radial direction of the inner peripheral surface 71 corresponding to the small diameter side.

  The inner ring holding member 8 is an annular member. The inner ring holding member 8 includes a disk-shaped main body 80 and an annular flange 81, and the main body 80 has an inner peripheral surface 82 as a large-diameter side corresponding surface and a large end surface abutting surface 83. And have. As shown in FIG. 2, the inner peripheral surface 82 has a shape corresponding to the outer peripheral surface 18 of the end portion on the large diameter side of the inner ring 1. The large end surface abutting surface 83 is connected to the end of the inner peripheral surface 82 on the other end side in the axial direction. The inner peripheral surface 82 and the large end surface abutting surface 83 have a shape corresponding to the outer surface (consisting of the outer peripheral surface and the end surface) of the end portion on the large diameter side of the outer peripheral conical raceway surface 11 in the axial direction of the inner ring 1. Yes. The main body 80 has a plurality of screw holes 85, and each screw hole 85 extends in the axial direction of the main body 80. Each screw hole 85 penetrates the main body 80 in the axial direction.

  The flange portion 81 extends in the axial direction from an end surface 84 opposite to the inner peripheral surface 82 side in the axial direction of the main body portion 80. The flange portion 81 has a plurality of screw holes 86, and the plurality of screw holes 86 are located at intervals in the circumferential direction of the flange portion 81. Each screw hole 86 extends in the radial direction of the flange portion 81 and passes through the flange portion 81.

  The segment pressing member 9 has a plurality of comb-shaped members 91. All the comb-shaped members 91 are the same. FIG. 4 is a perspective view of one comb-shaped member 91. As shown in FIG. 4, each comb-shaped member 91 includes an arc-shaped portion 94 having an arc shape and a plurality of segment engaging portions 95. The segment engaging portion 95 has a columnar shape. As shown in FIG. 4, each of the segment engaging portions 95 is in the axial direction of the arc-shaped portion 94 (meaning the axial direction of the virtual annular member formed when the arc-shaped portion 94 is extended without changing the curvature). It extends from the end of one side to the one side in the axial direction. The plurality of segment engaging portions 95 are located at intervals in the circumferential direction of the arcuate portion 94 (meaning the circumferential direction of the virtual annular member). The arcuate portion 94 has a plurality of screw holes 97. Each screw hole 97 is a through hole. Each screw hole 97 extends in the radial direction of the arc-shaped portion 94 (meaning the radial direction of the virtual annular member). The plurality of screw holes 97 are spaced from each other in the circumferential direction of the arcuate portion 94. Each of the segment engaging portions 95 is located between notches 93 adjacent in the circumferential direction. Each segment engaging portion 95 is a portion corresponding to a comb tooth.

  Returning to the assembling method of the tapered roller bearing, the dummy outer ring mounting step and the inner ring mounting member mounting step are performed following the member preparation step. In the dummy outer ring mounting step, the mounting surface 63 of the dummy outer ring 6 is mounted on the horizontal plane 88. In the inner ring mounting member mounting step, the mounting surface 73 of the inner ring mounting member 7 is mounted on a horizontal plane 88.

  Subsequently, a tapered roller accommodation step is performed. In the tapered roller housing step, the tapered roller 2 is housed in the pocket 32 of each segment 31 (see FIG. 3). Thereafter, a segment placement process is performed. In the segment placing step, the rolling surface of the tapered roller 2 in the pocket 32 is positioned on the inner circumferential surface 61 of the dummy outer ring 6, and the small end surface 24 of the tapered roller 2 is engaged with the flange 62 of the dummy outer ring 6. The segments 31 in which the tapered rollers 2 are accommodated in all the pockets 32 are placed on the dummy outer ring 6 so as to be stopped.

  Subsequently, an inner ring placing step is performed. In the inner ring placing step, the inner ring 1 is placed on the inner ring placing member 7 from above in the vertical direction. Specifically, the outer peripheral surface 15 of the end portion on the small-diameter side in the axial direction of the inner ring 1 is brought into contact with the inner peripheral surface 71 corresponding to the small-diameter side of the inner ring mounting member 7, and the conical track surface 11 in the axial direction of the inner ring 1. The small end surface 19 on the small diameter side is mounted on the small end surface receiving surface 72 of the inner ring mounting member 7.

  Subsequently, an inner ring holding step is performed. In the inner ring holding step, the inner ring holding member 8 is assembled and fixed to the inner ring mounting member 7 from above in the vertical direction. Specifically, the large end surface 19 on the large diameter side of the outer circumferential conical raceway surface 11 in the axial direction of the inner ring 1 is brought into contact with the large end surface abutment surface 83 of the inner ring holding member 8, and the outer circumferential conical raceway surface in the axial direction of the inner ring 1. 11 is fitted into the inner peripheral surface 82 of the inner ring holding member 8. Thereafter, the inner ring holding member 8 is fixed to the inner ring 1 with the eyebolt 77. As shown in FIG. 2, the inner ring 1 has a plurality of screw holes 14. The plurality of screw holes 14 are spaced from each other. Each screw hole 14 extends in the axial direction of the inner ring 1.

  The eyebolt 77 is screwed into the screw hole 85 of the inner ring holding member 8 and the screw hole 14 of the inner ring 1 and tightened. In this way, the inner ring holding member 8 is fixed to the inner ring 1. FIG. 2 shows a state after the inner ring holding member 8 is fixed to the inner ring 1. In this state, each screw hole 86 of the flange portion 81 extends substantially in the radial direction of the inner ring 1. The plurality of screw holes 85 of the inner ring holding member 8 constitute a fixed portion of the inner ring holding member 8.

  Subsequently, a roller raceway surface arranging step is performed. In the roller raceway surface arranging step, each segment engaging portion 95 (see FIG. 4) of the comb-shaped member 91 is fastened in a state where it overlaps with the column portion 39 (see FIG. 3) of the segment 31 in the radial direction of the inner ring 1. A bolt (not shown in FIG. 2) as a member is screwed into the screw hole 97 of the arcuate portion 94 and the screw hole 86 of the inner ring holding member 8, and the comb-shaped member 91 is joined to the inner ring holding member 8. Tighten. In this manner, the comb-shaped member 91 is moved relative to the inner ring holding member 8 in the direction indicated by the arrow A in FIG. The column portion 39 is pressed toward the outer peripheral conical raceway surface 11 of the inner ring 1. In this way, the tapered roller 2 held by the segment 31 is positioned on the outer circumferential conical raceway surface 11 of the inner ring 1.

  FIG. 5 is a diagram illustrating a state after all the tapered rollers 2 are positioned on the outer circumferential conical raceway surface 11 of the inner ring 1.

  In the state shown in FIG. 5, that is, in a state where the inner ring 1 is fixed to the inner ring holding member 8 and the segment pressing member 9 is fixed to the inner ring holding member 8 with bolts 99, the inner ring 1, the cage 3, The plurality of tapered rollers 2, the inner ring holding member 8, the segment pressing member 9, and the bolt 99 have an integral structure and cannot be separated from each other. This inseparable integral structure constitutes an inner ring assembly.

  Returning to the assembly method of the tapered roller bearing, the outer ring assembling step is subsequently performed. In the outer ring assembly step, the inner ring assembly is lifted by hooking a strap or the like on the annular portion 79 of the eyebolt 77 of the inner ring assembly. Thereafter, the inner ring assembly is moved in the horizontal direction, and then the inner ring assembly is lowered between an outer ring (not shown) fixed in the axle box and a main shaft (not shown) facing in the vertical direction. Each tapered roller 2 of the inner ring assembly is positioned between the outer peripheral conical track surface 11 of the inner ring 1 and the inner peripheral conical track surface of the outer ring (not shown).

  Finally, the bolt 99 and the eyebolt 77 are removed, the inner ring holding member 8 and the segment pressing member 9 are removed from the inner ring assembly, and the assembly of the rear side tapered roller bearing is completed.

  According to the above embodiment, the segment engaging portion 95 of the segment pressing member 9 can press the segment 31 to the inner ring 1 side, and the tapered roller 2 in the pocket 32 of the segment 31 is moved to the outer peripheral conical track surface 11 side of the inner ring 1. Can be pressed. Therefore, even when the non-annular retainer 3 having a plurality of segments 31 is used and the small end surface 19 on the small collar side in the axial direction of the inner ring 1 is directed downward in the vertical direction, The tapered rollers 2 are not separated from the outer circumferential conical raceway surface 11. Therefore, when the non-annular retainer 3 having a plurality of segments 31 is used, it is necessary to assemble in a state where the small end surface 19 on the small collar portion side in the axial direction of the inner ring 1 is directed downward in the vertical direction. Even a tapered roller bearing can be assembled smoothly.

  Moreover, according to the said embodiment, without providing the special mechanism which engages the segments 31, the assembly of a tapered roller bearing is performed with the small collar part side of the inner ring 1 arranged below the vertical direction. Can do. Therefore, the manufacturing cost of the segment 31 does not increase, and the man-hour for manufacturing the segment 31 does not increase.

  In the above embodiment, each segment 31 of the cage 3 has only one pocket 32. However, in the present invention, each segment of the cage is independent of other segments and independently of one or more. You can have any number of pockets.

  Moreover, in the said embodiment, although each segment 31 which comprises the holder | retainer 3 was all the same, in this invention, the several segment which comprises a holder | retainer may have two or more segments which are mutually different. .

  In the above embodiment, the fixing portion of the inner ring holding member 8 is configured by the screw hole 85. However, in the present invention, the inner ring holding member may be configured to have an inner circumferential surface, and the outer circumferential surface of the end portion on the large diameter side of the outer circumferential conical raceway surface of the inner ring may be fixed to the inner circumferential surface by press-fitting, You may comprise a fixing | fixed part with the internal peripheral surface of an inner ring holding member.

  In the above embodiment, the inner ring holding member 8 is an annular member. However, in the present invention, the inner ring holding member may not be an annular member, and the inner ring holding member may be constituted by a plurality of members. good. In this case, each member constituting the inner ring holding member includes a large-diameter corresponding surface having a shape corresponding to a part of the outer peripheral surface of the large-diameter end of the inner ring, and an end on the large-diameter side of the inner ring. It is preferable to have a fixing portion for fixing the portion and a plurality of screw holes extending substantially in the radial direction of the inner ring in a state where the end portion on the large diameter side of the inner ring is fixed to the fixing portion. In this case, the plurality of members may all be the same, or the plurality of members may have two or more members different from each other. In this case, it is needless to say that each member constituting the inner ring holding member needs to be fixed to the inner ring with a fastening member such as a bolt.

  In the above embodiment, after the tapered roller 2 is positioned between the outer peripheral conical raceway surface 11 of the inner ring 1 and the inner peripheral conical raceway surface of the outer ring, the inner ring holding member 8 and the segment pressing member 9 are moved from the inner ring assembly. Removed. However, in this invention, after the tapered roller is positioned between the outer peripheral conical raceway surface of the inner ring and the inner peripheral conical raceway surface of the outer ring, only the segment pressing member is removed from the inner ring assembly, and the inner ring holding member is fixed to the inner ring. It may be left as it is.

  Moreover, in the said embodiment, each segment 31 which comprises the holder | retainer 3 had the shape of a box without an upper surface and a lower surface, and the holder | retainer 3 was a both-ends structure. However, in the present invention, the cage may be a machined cage or the like, and the cage may be a cantilever structure. In the present invention, the cage may have any structure as long as it is composed of a plurality of segments.

  In the above embodiment, the plurality of comb-shaped members 91 included in the segment pressing member 9 are all the same. However, in the present invention, the plurality of comb-shaped members included in the segment pressing member are two or more different from each other. For example, two or more comb-like members may have different numbers of segment engaging portions.

  Further, in the invention of the method for assembling the tapered roller bearing, the condition that the segment placing process is performed after the dummy outer ring placing process and the condition that the roller raceway surface placing process is performed after the inner ring placing process are satisfied. If so, each step may be performed in any order, two or more steps may be performed at a time with a time difference at the same time, or two or more steps may be performed at the same time without a time difference. May be. For example, after all the tapered rollers held in one segment are positioned on the outer peripheral conical raceway surface of the inner ring using a comb-like member, other tapered rollers held in other segments are placed on the dummy outer ring. You may do it.

  Of course, it is possible to form a new embodiment by combining two or more of the configurations described in the above embodiments and modifications. The present invention is preferably applied to the assembly of tapered roller bearings arranged on the main shaft of a wind power generator, but it goes without saying that the present invention may be applied to the assembly of any industrial machine or construction machine. .

DESCRIPTION OF SYMBOLS 1 Inner ring 2 Conical roller 3 Cage 4 Jig for assembly of tapered roller bearing 6 Dummy outer ring 7 Inner ring mounting member 8 Inner ring holding member 9 Segment pressing member 11 Outer peripheral conical raceway surface 31 Cage segment 32 Cage pocket 39 Column 61 61 Dummy outer ring conical inner peripheral surface 62 Dummy outer ring flange 63 Dummy outer ring mounting surface 71 Inner ring mounting member inner surface corresponding to small diameter side 72 Inner ring mounting member small end surface receiving surface 73 Inner ring mounting member mounting surface 82 Inner ring holding member inner circumferential surface 85 Inner ring holding member main body screw hole 86 Inner ring holding member flange screw hole 88 Horizontal surface 91 Comb member 94 Arc-shaped portion 95 Segment engagement Joint part 97 Screw hole in the arc-shaped part of the comb-like member 99 Bolt

Claims (3)

An assembly jig used for assembling a tapered roller bearing including a cage having a plurality of segments,
A conical inner peripheral surface, a flange portion positioned on the small-diameter side in the axial direction of the conical inner peripheral surface, and substantially extending in a radial direction of the conical inner peripheral surface and positioned at an end portion on the small-diameter side in the axial direction An annular dummy outer ring having a mounting surface;
A small-diameter-side inner peripheral surface having a shape corresponding to the outer peripheral surface of the small-diameter end of the inner ring of the tapered roller bearing, and a small-end surface receiver connected to one axial end of the small-diameter-side inner peripheral surface An inner ring mounting member having a stop surface and a mounting surface that is positioned on one side in the axial direction from the small end surface receiving surface and extends in the radial direction of the inner peripheral surface corresponding to the small diameter side;
A large-diameter side corresponding surface having a shape corresponding to at least a part of an outer peripheral surface of an end portion on the large-diameter side of the inner ring, a fixing portion for fixing an end portion on the large-diameter side of the inner ring, and a large diameter of the inner ring An inner ring holding member having a plurality of screw holes extending substantially in the radial direction of the inner ring in a state where the end portion on the side is fixed to the fixing portion;
Each comb-shaped member has a plurality of comb-shaped members, and each of the comb-shaped members extends from an arc-shaped portion having an arc shape and one end in the axial direction of the arc-shaped portion to one side in the axial direction. And a plurality of segment engaging portions that are spaced apart from each other in the circumferential direction of the arc-shaped portion, and each of the arc-shaped portions has a screw hole that penetrates the arc-shaped portion in the radial direction. An assembly jig for a tapered roller bearing, comprising: a segment pressing member. The retainer having an inner ring of a tapered roller bearing, a plurality of tapered rollers, a plurality of segments, each segment having one or more pockets for accommodating one or more of the tapered rollers, and the cone according to claim 1. A member preparation step of preparing a roller bearing assembly jig;
A dummy outer ring placement step of placing the placement surface on the dummy outer ring on a horizontal surface;
An inner ring placement member placement step of placing the placement surface on the inner ring placement member on the horizontal plane; and
A tapered roller housing step of housing the tapered roller in each pocket of each segment;
After the dummy outer ring placing step, the segments in which the tapered rollers are accommodated in all the pockets are positioned on the inner circumferential surface of the dummy outer ring with the rolling surfaces of the tapered rollers in the pockets. A segment placing step for placing the tapered outer ring on the dummy outer ring so that the small end surface of the tapered roller is locked to the flange of the dummy outer ring;
The outer peripheral surface of the end on the small diameter side of the inner ring is brought into contact with the inner peripheral surface corresponding to the small diameter side of the inner ring mounting member, and the small end surface of the inner ring is brought into contact with the small end surface receiving surface of the inner ring mounting member. An inner ring placing step of placing the inner ring on the inner ring placing member so as to be placed;
In a state where at least a part of the outer peripheral surface of the end portion on the large diameter side of the inner ring is in contact with the large diameter side corresponding surface of the inner ring holding member having a shape corresponding to at least a part of the inner ring, An inner ring holding step of fixing an end portion on the large diameter side to the fixing portion of the inner ring holding member;
After the inner ring placing step, each segment engaging portion of the comb-shaped member is overlapped in the radial direction of the inner ring with the column portion of the segment in which the tapered rollers are accommodated in all the pockets. The fastening member is screwed into the screw hole of the arc-shaped portion and the screw hole of the inner ring holding member, and the comb-like member is fastened to the inner ring holding member, whereby the segment engaging portion A roller raceway surface disposing step of moving the segment toward the outer peripheral conical raceway surface side of the inner ring and positioning the tapered rollers held by the segment on the outer peripheral conical raceway surface. Roller bearing assembly method. An inner ring having an outer circumferential conical raceway surface;
A cage having a plurality of segments, each segment having one or more pockets;
A tapered roller housed in the pocket of each segment and positioned on the outer peripheral conical raceway surface;
A large diameter side corresponding surface with which at least a part of an outer peripheral surface of an end portion on the large diameter side of the inner ring abuts, a fixed portion to which an end portion on the large diameter side of the inner ring is fixed, and a diameter of the inner ring. An inner ring holding member having a plurality of screw holes extending in the direction;
Each comb-shaped member has a plurality of comb-shaped members, and each of the comb-shaped members extends from an arc-shaped portion having an arc shape and one end in the axial direction of the arc-shaped portion to one side in the axial direction. And a plurality of segment engaging portions that are spaced apart from each other in the circumferential direction of the arc-shaped portion, and each of the arc-shaped portions has a screw hole that penetrates the arc-shaped portion in the radial direction. A segment pressing member in which at least a part of each segment engaging portion is in contact with the radially outer end surface of the column of the segment;
An inner ring comprising: a fastening member screwed into the screw hole of the inner ring holding member and the screw hole of the segment pressing member to fasten the segment pressing member to the inner ring holding member. Assembly.

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