JP6069920B2 - Tapered roller bearing assembly method, assembly jig, and tapered roller bearing - Google Patents

Tapered roller bearing assembly method, assembly jig, and tapered roller bearing Download PDF

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JP6069920B2
JP6069920B2 JP2012156186A JP2012156186A JP6069920B2 JP 6069920 B2 JP6069920 B2 JP 6069920B2 JP 2012156186 A JP2012156186 A JP 2012156186A JP 2012156186 A JP2012156186 A JP 2012156186A JP 6069920 B2 JP6069920 B2 JP 6069920B2
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tapered roller
outer ring
tapered
inner ring
ring raceway
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JP2014020380A (en
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宮地　武志
武志 宮地
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JTEKT Corp
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JTEKT Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/51—Cages for rollers or needles formed of unconnected members
    • F16C33/513—Cages for rollers or needles formed of unconnected members formed of arcuate segments for carrying one or more rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/04—Preventing damage to bearings during storage or transport thereof or when otherwise out of use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)

Description

本発明は、風力発電装置の主軸等を支持するための円すいころ軸受に好適に適用することができる組立方法及び組立用治具、並びに円すいころ軸受に関する。   The present invention relates to an assembling method, an assembling jig, and a tapered roller bearing that can be suitably applied to a tapered roller bearing for supporting a main shaft and the like of a wind turbine generator.

風力発電機の主軸を支持するために使用される転がり軸受としては、例えば円すいころ軸受があり、その保持器にはピン型保持器が使用される場合がある（例えば、特許文献１参照）。このピン型保持器は、円すいころの軸方向両側に配置された一対の保持リングと、周方向に間隔をあけて配設され、一対の保持リングに両端が連結される複数のピンとを備えている。そして、円すいころの中心軸線上に形成された貫通孔にピンを挿通させることによって、複数の円すいころの周方向の間隔が保持されるようになっている。   As a rolling bearing used for supporting the main shaft of a wind power generator, for example, there is a tapered roller bearing, and a pin-type cage may be used as the cage (see, for example, Patent Document 1). This pin type retainer includes a pair of retaining rings arranged on both sides in the axial direction of the tapered rollers, and a plurality of pins disposed at intervals in the circumferential direction and connected to both ends of the pair of retaining rings. Yes. And the space | interval of the circumferential direction of several tapered rollers is hold | maintained by inserting a pin in the through-hole formed on the center axis line of the tapered rollers.

しかしながら、風力発電装置の主軸を支持するために使用される円すいころ軸受は、直径が１〜２ｍ程度もあり、非常に大型で重量も大きくなる。そのため、最近では、ピン型保持器に代えて、軽量化が可能な合成樹脂製の保持器が利用されつつある。ただし、合成樹脂製の保持器は、大型になる程その全体を一体成形するのが困難となるため、通常、周方向の一部分ごとに成形された分割型の保持器が用いられる（例えば、特許文献２参照）。   However, the tapered roller bearing used to support the main shaft of the wind power generator has a diameter of about 1 to 2 m, and is very large and heavy. Therefore, recently, instead of the pin-type cage, a cage made of a synthetic resin that can be reduced in weight is being used. However, since it becomes difficult to integrally mold the whole of the synthetic resin cage as the size increases, a split cage that is molded for each part in the circumferential direction is usually used (for example, a patent) Reference 2).

特開２００８−２５６１６８号公報JP 2008-256168 A 特開２０１２−７７８８２号公報JP 2012-77882 A

しかしながら、合成樹脂製の分割型保持器は、円すいころ軸受の組立性に難がある。つまり、円すいころ軸受を組み立てるには、内輪の外周側に保持器を環状に配列しつつ、保持器のポケットに円すいころを挿入していくが、保持器が分割型であると、内輪の外周側から離脱し易くなり、同時に円すいころも内輪から離脱し易くなる。そのため、内輪に保持器及び円すいころを組み付けた後に外輪をも組み付けることによって円すいころ軸受を一体の状態（完成品の状態）に組み立てる必要があり、さらに、円すいころ軸受を一体の状態で保持しておく必要もある。
また、一体の状態に組み立てた円すいころ軸受をハウジングや主軸に装着する場合、外輪及び内輪の軸心が正確に一致していることが望まれる。 However, the split cage made of synthetic resin has difficulty in assembling the tapered roller bearing. In other words, in order to assemble a tapered roller bearing, the tapered rollers are inserted into the pockets of the cage while arranging the cages in an annular shape on the outer circumferential side of the inner ring. It becomes easy to detach from the side, and at the same time, the tapered roller easily detaches from the inner ring. For this reason, it is necessary to assemble the tapered roller bearing into an integrated state (finished product state) by assembling the outer ring after the cage and tapered roller are assembled to the inner ring, and further hold the tapered roller bearing in an integrated state. It is also necessary to keep it.
In addition, when the tapered roller bearing assembled in an integrated state is mounted on the housing or the main shaft, it is desired that the axial centers of the outer ring and the inner ring are accurately aligned.

本発明は、以上のような実情に鑑み、円すいころ軸受における内輪、円すいころ、保持器、及び外輪を一体に組み立てた状態で好適に保持することができる組立方法及び組立用治具、並びに円すいころ軸受を提供することを目的とする。   SUMMARY OF THE INVENTION In view of the above circumstances, the present invention provides an assembly method and assembly jig that can suitably hold an inner ring, a tapered roller, a cage, and an outer ring in a tapered roller bearing in an integrally assembled state, and a cone. It aims at providing a roller bearing.

（１）本発明に係る円すいころ軸受の組立方法は、円すい形状の内輪軌道とこの内輪軌道の軸方向両側に設けられた小鍔部及び大鍔部とを有する内輪と、円すい形状の外輪軌道を有する外輪と、前記内輪軌道及び前記外輪軌道の間に配置される複数の円すいころと、複数の円すいころの周方向の間隔を保持する保持器とを一体に組み立てる第１工程、及び、前記外輪に位置規制具を取り付け、当該位置規制具と前記小鍔部とで前記円すいころを挟持することによって、前記円すいころの小端面を前記小鍔部に当接させて押し付けた状態で前記外輪に対する前記円すいころの大端面側への相対移動を制限する第２工程
を含むことを特徴とする。 (1) A method for assembling a tapered roller bearing according to the present invention includes an inner ring having a tapered inner ring raceway and small and large collar portions provided on both sides in the axial direction of the inner ring raceway, and a conical outer ring raceway. an outer ring having the inner ring raceway and the plurality of tapered rollers arranged between the outer ring raceway, the first step of assembling together and a cage holding the circumferential direction between the plurality of tapered rollers, and wherein A position restricting tool is attached to the outer ring, and the tapered ring is sandwiched between the position restricting tool and the small flange portion, so that the small end surface of the tapered roller is in contact with and pressed against the small flange portion. Including a second step of restricting relative movement of the tapered roller toward the large end face.

本発明の組立方法によれば、外輪に対する円すいころの大端面側への相対移動が制限されるので、内輪、保持器、円すいころ、及び外輪を一体に組み立てた完成品の状態で、その形態を好適に保持することができる。また、本発明の組立方法によれば、外輪と内輪との軸心を一致させることができる。そのため、一体の状態の円すいころ軸受をハウジングや軸に装着する作業を容易に行うことができる。 According to the assembling method of the present invention, since the relative movement of the tapered roller with respect to the outer ring to the large end face side is restricted, the inner ring, the cage, the tapered roller, and the outer ring are assembled in a state of a finished product. Can be suitably held. Further, according to the assembling method of the present invention, the axial centers of the outer ring and the inner ring can be matched. Therefore, the work of mounting the tapered roller bearing in an integrated state on the housing or the shaft can be easily performed.

（２）前記位置規制具は、前記外輪に取り付けられる取付片と、前記小鍔部との間で前記円すいころを挟持する規制片とを有し、前記規制片は、前記外輪軌道に沿って配置され、先端部が前記円すいころの大端面に当接されることが好ましい。 (2) The position restricting tool has a mounting piece attached to the outer ring and a restricting piece for sandwiching the tapered roller between the small collar part, and the restricting piece is arranged along the outer ring raceway. It is preferable that the end portion is disposed and abutted against the large end surface of the tapered roller .

（３）本発明に係る円すいころ軸受の組立用治具は、円すい形状の内輪軌道とこの内輪軌道の軸方向両側に設けられた小鍔部及び大鍔部とを有する内輪と、円すい形状の外輪軌道を有する外輪と、前記内輪軌道及び前記外輪軌道の間に配置される複数の円すいころと、複数の円すいころの周方向の間隔を保持する保持器とを一体に組み立てた状態で、前記外輪に対して着脱可能に取り付けられ、かつ前記小鍔部との間で前記円すいころを挟持することによって、前記円すいころの小端面を前記小鍔部に当接させて押し付けた状態で前記外輪に対する前記円すいころの大端面側への移動を制限する位置規制具を備えていることを特徴とする。 (3) A tapered roller bearing assembly jig according to the present invention includes a tapered inner ring raceway, an inner ring having a small collar portion and a large collar portion provided on both axial sides of the inner ring raceway, In the state where the outer ring having the outer ring raceway, the plurality of tapered rollers arranged between the inner ring raceway and the outer ring raceway, and the cage that holds the circumferential spacing of the plurality of tapered rollers are assembled together, The outer ring is attached in a detachable manner to the outer ring, and the outer ring is held in a state where the small end surface of the tapered roller is in contact with and pressed against the small flange portion by sandwiching the tapered roller with the small flange portion. The position control tool which restrict | limits the movement to the big end surface side of the said tapered roller with respect to is provided.

本発明の組立用治具によれば、外輪に対する円すいころの大端面側への相対移動が位置規制具によって制限されるので、内輪、保持器、円すいころ、及び外輪を一体に組み立てた完成品の状態で、その形態を好適に保持することができる。また、本発明の組立用治具によれば、外輪と内輪との軸心を一致させることができる。そのため、一体の状態の円すいころ軸受をハウジングや軸に装着する作業を容易に行うことができる。 According to the assembling jig of the present invention, the relative movement of the tapered roller with respect to the outer ring toward the large end face side is limited by the position restricting tool, so that the finished product in which the inner ring, the cage, the tapered roller, and the outer ring are assembled together. In this state, the form can be suitably maintained. Further, according to the assembling jig of the present invention, the axial centers of the outer ring and the inner ring can be matched. Therefore, the work of mounting the tapered roller bearing in an integrated state on the housing or the shaft can be easily performed.

（４）前記位置規制具は、前記外輪に取り付けられる取付片と、前記小鍔部との間で前記円すいころを挟持する規制片とを有し、前記規制片は、前記外輪軌道に沿って配置され、先端部が前記円すいころの大端面に当接されることが好ましい。
(4) The position restricting tool has a mounting piece attached to the outer ring and a restricting piece for sandwiching the tapered roller between the small collar part, and the restricting piece is along the outer ring raceway. It is preferable that the end portion is disposed and abutted against the large end surface of the tapered roller .

（５）前記位置規制具は、周方向に間隔をあけて配置された一部の複数個の円すいころに対応して設けられることが好ましい。
位置規制具は、全ての円すいころ対応して設けることも可能であるが、この場合、位置規制具の数量が多くなり、重量増やコスト増を招くだけでなく、位置規制具の着脱が煩雑になる。そのため、周方向に間隔をあけて配置された一部の複数個の円すいころに対応して位置規制具を設けることによって、重量増、コスト増を抑制し、位置規制具の着脱作業を容易に行うことができる。 (5) It is preferable that the said position control tool is provided corresponding to the some some tapered roller arrange | positioned at intervals in the circumferential direction.
Position control tools can be provided for all tapered rollers, but in this case, the number of position control tools increases, which not only increases weight and costs but also makes it difficult to attach and remove the position control tools. become. Therefore, by providing a position restricting tool corresponding to some of the plurality of tapered rollers arranged at intervals in the circumferential direction, an increase in weight and cost can be suppressed, and attachment / detachment work of the position restricting tool can be easily performed. It can be carried out.

（６）前記保持器は、周方向に配列された複数の分割体からなる分割型保持器であることが好ましい。
本発明は、分割型保持器以外の環状の保持器を備えた円すいころ軸受に適用することも可能であるが、内輪の径方向外側から保持器及び円すいころが離脱し易くなる分割型保持器を使用した円すいころ軸受に対して適用することがより好適である。 (6) It is preferable that the cage is a split-type cage composed of a plurality of divided bodies arranged in the circumferential direction.
The present invention can be applied to a tapered roller bearing having an annular cage other than the divided cage, but the cage and the tapered roller can be easily detached from the radially outer side of the inner ring. It is more suitable to apply to a tapered roller bearing using

（７）本発明の円すいころ軸受は、円すい形状の内輪軌道とこの内輪軌道の軸方向両側に設けられた小鍔部及び大鍔部とを有する内輪と、円すい形状の外輪軌道を有する外輪と、前記内輪軌道及び前記外輪軌道の間に配置される複数の円すいころと、複数の円すいころの周方向の間隔を保持する保持器と、前記内輪、外輪、円すいころ、及び保持器を一体に組み立てた状態で前記外輪に取り付けられ、当該外輪に対する前記円すいころの大端面側への移動を制限する上記（４）〜（６）のいずれかに記載の位置規制具と、を備えていることを特徴とする。 (7) A tapered roller bearing according to the present invention includes a conical inner ring raceway, an inner ring having small and large collar portions provided on both sides in the axial direction of the inner ring raceway, and an outer ring having a conical outer ring raceway. A plurality of tapered rollers disposed between the inner ring raceway and the outer ring raceway, a cage for maintaining a circumferential interval between the plurality of tapered rollers, and the inner ring, the outer ring, the tapered roller, and the cage. The position restricting tool according to any one of (4) to (6), which is attached to the outer ring in an assembled state and restricts movement of the tapered roller toward the large end surface with respect to the outer ring. It is characterized by.

本発明における円すいころ軸受の組立方法及び組立用治具、並びに円すいころ軸受によれば、内輪、円すいころ、保持器、外輪を一体に組み立てた状態に保持することができる。   According to the tapered roller bearing assembling method, the assembling jig, and the tapered roller bearing of the present invention, the inner ring, the tapered roller, the cage, and the outer ring can be held in an assembled state.

本発明の一実施形態に係る円すいころ軸受の正面図である。It is a front view of the tapered roller bearing which concerns on one Embodiment of this invention. 図１のＩＩ−ＩＩ矢視断面図である。It is II-II arrow sectional drawing of FIG. 円すいころと保持器との関係を示す平面説明図である。It is a plane explanatory view showing the relation between a tapered roller and a cage. 位置規制具と円すいころとの関係を示す平面説明図である。It is plane explanatory drawing which shows the relationship between a position control tool and a tapered roller. 変形例における位置規制具と円すいころとの関係を示す平面説明図である。It is plane explanatory drawing which shows the relationship between the position control tool and tapered roller in a modification. 他の変形例における位置規制具と円すいころとの関係を示す平面説明図である。It is plane explanatory drawing which shows the relationship between the position control tool and tapered roller in another modification.

以下、添付図面を参照しつつ、本発明の実施形態を詳細に説明する。
図１は、本発明の一実施形態に係る円すいころ軸受の正面図、図２は、図１のＩＩ−ＩＩ矢視断面図である。
本実施形態の円すいころ軸受１０は、例えば、風力発電装置の主軸を支持するために使用されるものであり、環状の内輪１１と、この内輪１１の径方向外方に配置された環状の外輪１２と、内輪１１と外輪１２との間に周方向に配列された複数の円すいころ１３と、複数の円すいころ１３の周方向の間隔を保持する保持器１４とを備えている。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a front view of a tapered roller bearing according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line II-II in FIG.
The tapered roller bearing 10 of the present embodiment is used, for example, to support a main shaft of a wind power generator. An annular inner ring 11 and an annular outer ring disposed radially outward of the inner ring 11 are used. 12, a plurality of tapered rollers 13 arranged in the circumferential direction between the inner ring 11 and the outer ring 12, and a retainer 14 that holds a circumferential interval between the plurality of tapered rollers 13.

内輪１１の外周面には、円すい形状に形成された内輪軌道１１ａが形成されている。また、この内輪軌道１１ａの軸方向両側には、径方向外方に突出する小鍔部１１ｂと大鍔部１１ｃとが形成されている。
外輪１２の内周面には、円すい形状に形成された外輪軌道１２ａが形成されている。 An inner ring raceway 11 a formed in a conical shape is formed on the outer peripheral surface of the inner ring 11. Further, on both sides in the axial direction of the inner ring raceway 11a, a small flange portion 11b and a large flange portion 11c are formed that protrude radially outward.
An outer ring raceway 12 a formed in a conical shape is formed on the inner peripheral surface of the outer ring 12.

円すいころ１３は、截頭円すい（円すい台）形状に形成されており、内輪軌道１１ａ及び外輪軌道１２ａ上を転動可能である。円すいころ１３は、小鍔部１１ｂ及び大鍔部１１ｃによって内輪１１に対する軸方向の相対移動が制限されている。すなわち、円すいころ１３の小端面１３ａは、小鍔部１１ｂに当接することによって軸方向一方側（左側）への移動が制限され、円すいころ１３の大端面１３ｂは、大鍔部１１ｃに当接することによって軸方向他方側（右側）への移動が制限される。   The tapered roller 13 is formed in a truncated cone shape (cone) and can roll on the inner ring raceway 11a and the outer ring raceway 12a. The tapered roller 13 is restricted in relative movement in the axial direction with respect to the inner ring 11 by the small flange portion 11b and the large flange portion 11c. That is, the small end surface 13a of the tapered roller 13 is restricted from moving toward one side (left side) in the axial direction by contacting the small flange portion 11b, and the large end surface 13b of the tapered roller 13 contacts the large flange portion 11c. This restricts movement to the other side (right side) in the axial direction.

図３は、円すいころと保持器との関係を示す平面説明図である。
保持器１４は、周方向に並べて配置された複数の分割体１５から構成されている。各分割体は、一対の環状部１５ａと、一対の環状部１５ａの間に架設され、周方向に間隔をあけて設けられた複数の柱部１５ｂとを備えている。一対の環状部１５ａと周方向に隣接する柱部１５ｂとによって囲まれた空間がポケット１５ｃとされ、このポケット１５ｃの内部に円すいころ１３が収容されている。 FIG. 3 is an explanatory plan view showing the relationship between the tapered roller and the cage.
The cage 14 is composed of a plurality of divided bodies 15 arranged side by side in the circumferential direction. Each divided body includes a pair of annular portions 15a and a plurality of column portions 15b provided between the pair of annular portions 15a and spaced apart in the circumferential direction. A space surrounded by the pair of annular portions 15a and the column portions 15b adjacent in the circumferential direction is a pocket 15c, and the tapered roller 13 is accommodated in the pocket 15c.

本実施形態の円すいころ１３には、内輪１１、円すいころ１３、保持器１４、及び外輪１２を一体に組み立てた状態（完成品の状態）で、その形態を保持するための組立用治具２０を備えている。この組立用治具２０は、円すいころ軸受１０が適用される風力発電装置等の装置（以下、「適用装置」ともいう）に組み付けるまで使用され、適用装置に組み付けられた後は円すいころ軸受１０から取り外される。本実施形態の組立用治具２０は、外輪１２に対する円すいころ１３の大端面１３ｂ側への移動を制限する複数の位置規制具２１によって構成されている。   The tapered roller 13 of the present embodiment has an assembly jig 20 for holding the inner ring 11, the tapered roller 13, the cage 14, and the outer ring 12 in an assembled state (finished product state). It has. The assembling jig 20 is used until it is assembled to a device such as a wind power generator (hereinafter also referred to as “applicable device”) to which the tapered roller bearing 10 is applied. Removed from. The assembly jig 20 of the present embodiment is constituted by a plurality of position restricting tools 21 that restrict the movement of the tapered roller 13 relative to the outer ring 12 toward the large end surface 13b.

位置規制具２１は、図１に示されるように、外輪１２に対して周方向に間隔をあけて取り付けられている。より具体的には、４個の位置規制具２１が、９０°間隔で取り付けられている。図２に示されるように、位置規制具２１は、略くの字状に屈曲した取付片２２と規制片２３とから構成されている。取付片２２は、外輪１２の軸方向一端面（右端面）に当接し、当該端面にボルト等の固定具２５によって着脱自在に取り付けられる。規制片２３は、外輪軌道１２ａに沿って配置され、その先端部が円すいころ１３の大端面１３ｂに当接されている。したがって位置規制具２１は、外輪１２に対する円すいころ１３の大端面１３ｂ側への移動を制限している。   As shown in FIG. 1, the position restricting tool 21 is attached to the outer ring 12 with an interval in the circumferential direction. More specifically, four position restricting tools 21 are attached at 90 ° intervals. As shown in FIG. 2, the position restricting tool 21 is composed of a mounting piece 22 and a restricting piece 23 that are bent in a substantially square shape. The attachment piece 22 abuts on one end surface (right end surface) in the axial direction of the outer ring 12 and is detachably attached to the end surface by a fixing tool 25 such as a bolt. The restricting piece 23 is disposed along the outer ring raceway 12 a, and the tip end thereof is in contact with the large end surface 13 b of the tapered roller 13. Therefore, the position restricting tool 21 restricts the movement of the tapered roller 13 relative to the outer ring 12 toward the large end surface 13b.

位置規制具２１における規制片２３の長さＬは、次のように設定されている。すなわち、規制片２３の先端部を円すいころ１３の大端面１３ｂに当接させたとき、円すいころ１３の小端面１３ａが内輪１１の小鍔部１１ｂに当接するように、規制片２３の長さＬが設定されている。言い換えると、規制片２３は、図４に示されるように、円すいころ１３を矢印方向に押圧することによって小端面１３ａを小鍔部１１ｂに押しつけ、小鍔部１１ｂとの間で円すいころ１３を挟持している。   The length L of the restricting piece 23 in the position restricting tool 21 is set as follows. That is, the length of the regulating piece 23 is such that the small end surface 13a of the tapered roller 13 abuts against the small flange portion 11b of the inner ring 11 when the tip end portion of the regulating piece 23 is brought into contact with the large end surface 13b of the tapered roller 13. L is set. In other words, as shown in FIG. 4, the restricting piece 23 presses the tapered roller 13 in the direction of the arrow to press the small end surface 13a against the small flange portion 11b, and the tapered roller 13 is pressed between the small flange portion 11b. It is pinched.

したがって、外輪１２に対して位置規制具２１を取り付けると、内輪１１及び外輪１２と円すいころ１３との隙間（ラジアル隙間及びアキシアル隙間）が無くなり、これらの相対位置が完全に固定される。同時に、内輪１１と外輪１２の軸心も一致する。そのため、内輪１１、円すいころ１３、保持器１４、及び外輪１２を一体に組み立てた状態で、その形態を好適に保持することができる。さらに、内輪１１と外輪１２の軸心が一致するので、一体に組み立てられた円すいころ軸受１０をハウジングや軸に装着する作業を容易に行うことができる。   Therefore, when the position restricting tool 21 is attached to the outer ring 12, there are no gaps (radial gap and axial gap) between the inner ring 11 and the outer ring 12 and the tapered roller 13, and their relative positions are completely fixed. At the same time, the axial centers of the inner ring 11 and the outer ring 12 also coincide. Therefore, in the state which assembled the inner ring | wheel 11, the tapered roller 13, the holder | retainer 14, and the outer ring | wheel 12, the form can be hold | maintained suitably. Furthermore, since the axial centers of the inner ring 11 and the outer ring 12 coincide with each other, it is possible to easily perform the operation of mounting the tapered roller bearing 10 assembled integrally on the housing or the shaft.

なお、位置規制具２１における規制片２３の長さＬは、必ずしも円すいころ１３の小端面１３ａを内輪１１の小鍔部１１ｂに当接させるように設定されていなくてもよく、円すいころ１３の外周側から外輪１２が外れない程度に設定されていてもよい。この場合、内輪１１と外輪１２との軸心は一致しないが、一体化された円すいころ軸受１０の形態を保持することが可能となる。しかしながら、この場合には、位置規制具２１と円すいころ１３とが周方向に位置ずれしていまい、円すいころ１３を位置規制できなくなる可能性がある。したがって、このような不都合を防止するため、位置規制具２１の形状を次のように変形することができる。   The length L of the restricting piece 23 in the position restricting tool 21 is not necessarily set so that the small end surface 13a of the tapered roller 13 is brought into contact with the small flange portion 11b of the inner ring 11, and the length of the tapered roller 13 is not limited. It may be set to such an extent that the outer ring 12 does not come off from the outer peripheral side. In this case, although the axial centers of the inner ring 11 and the outer ring 12 do not coincide with each other, it is possible to maintain the form of the integrated tapered roller bearing 10. However, in this case, the position restricting tool 21 and the tapered roller 13 are displaced in the circumferential direction, and there is a possibility that the position of the tapered roller 13 cannot be restricted. Therefore, in order to prevent such an inconvenience, the shape of the position restricting tool 21 can be modified as follows.

図５は、変形例における位置規制具と円すいころとの関係を示す平面説明図である。
図５に示される変形例では、位置規制具２１における規制片２３の先端部には、円すいころ１３の大端面１３ｂ側の端部を嵌合させる凹部２３ａが形成されている。したがって、位置規制具２１によって円すいころ１３を押圧し、位置規制具２１と小鍔部１１ｂとの間で円すいころ１３を挟持しなくても、位置規制具２１と円すいころ１３との周方向の位置ずれを防止することができる。 FIG. 5 is an explanatory plan view showing the relationship between the position restricting tool and the tapered roller in the modified example.
In the modification shown in FIG. 5, a concave portion 23 a for fitting the end portion on the large end surface 13 b side of the tapered roller 13 is formed at the tip end portion of the restricting piece 23 in the position restricting tool 21. Therefore, even if the tapered roller 13 is pressed by the position restricting tool 21 and the tapered roller 13 is not sandwiched between the position restricting tool 21 and the small flange portion 11b, the circumferential direction between the position restricting tool 21 and the tapered roller 13 can be reduced. Misalignment can be prevented.

図６は、他の変形例における位置規制具と円すいころとの関係を示す平面説明図である。
図６に示される変形例では、位置規制具２１が、２つの円すいころ１３に亘る範囲で配置されている。そして、位置規制具２１の規制片２３には、２つの円すいころ１３の間に嵌合される凸部２３ｂが形成されている。したがって、この変形例においても、位置規制具２１と円すいころ１３との周方向の位置ずれを防止することができる。 FIG. 6 is an explanatory plan view showing the relationship between the position restricting tool and the tapered roller in another modified example.
In the modification shown in FIG. 6, the position restricting tool 21 is arranged in a range extending over the two tapered rollers 13. And the convex part 23b fitted between the two tapered rollers 13 is formed in the control piece 23 of the position control tool 21. Therefore, also in this modified example, it is possible to prevent the positional displacement in the circumferential direction between the position restricting tool 21 and the tapered roller 13.

本発明は前述した実施形態に限定されるものではなく、特許請求の範囲に記載された発明の範囲内において種々の変形及び変更が可能である。
組立用治具２０における位置規制具２１の数は、２個以上の複数個であれば、特に限定されない。しかしながら、３個以上の位置規制具２１を等間隔に配置することがより好ましい。また、複数の位置規制具２１は、それぞれ別体として構成されているが、例えば、環状の連結部材によって一体的に連結されていてもよい。 The present invention is not limited to the above-described embodiments, and various modifications and changes can be made within the scope of the invention described in the claims.
The number of position restricting tools 21 in the assembling jig 20 is not particularly limited as long as it is two or more. However, it is more preferable to arrange three or more position restricting tools 21 at equal intervals. Moreover, although the several position control tool 21 is comprised as a different body, respectively, you may be integrally connected by the annular connection member, for example.

本発明は、風力発電装置の主軸を支持するための円すいころ軸受１０に限らず、あらゆる装置に用いられる円すいころ軸受１０に適用することができる。   The present invention is not limited to the tapered roller bearing 10 for supporting the main shaft of the wind turbine generator, but can be applied to the tapered roller bearing 10 used in any device.

１０：円すいころ軸受、１１：内輪、１１ａ：内輪軌道、１１ｂ：小鍔部、１１ｃ：大鍔部、１２：外輪、１２ａ：外輪軌道、１３：円すいころ、１３ａ：小端面、１３ｂ：大端面、１４：保持器、１５：分割体、２０：組立用治具、２１：位置規制具   10: Tapered roller bearing, 11: Inner ring, 11a: Inner ring raceway, 11b: Small collar part, 11c: Large collar part, 12: Outer ring, 12a: Outer ring raceway, 13: Tapered roller, 13a: Small end face, 13b: Large end face , 14: cage, 15: divided body, 20: jig for assembly, 21: position restricting tool

Claims (7)

円すい形状の内輪軌道とこの内輪軌道の軸方向両側に設けられた小鍔部及び大鍔部とを有する内輪と、円すい形状の外輪軌道を有する外輪と、前記内輪軌道及び前記外輪軌道の間に配置される複数の円すいころと、複数の円すいころの周方向の間隔を保持する保持器とを一体に組み立てる第１工程、及び、
前記外輪に位置規制具を取り付け、当該位置規制具と前記小鍔部とで前記円すいころを挟持することによって、前記円すいころの小端面を前記小鍔部に当接させて押し付けた状態で前記外輪に対する前記円すいころの大端面側への相対移動を制限する第２工程
を含むことを特徴とする円すいころ軸受の組立方法。 An inner ring having a conical inner ring raceway and small and large collar portions provided on both sides in the axial direction of the inner ring raceway, an outer ring having a conical outer ring raceway, and between the inner ring raceway and the outer ring raceway. A first step of integrally assembling a plurality of tapered rollers to be disposed and a retainer for maintaining a circumferential interval between the plurality of tapered rollers; and
A position restricting tool is attached to the outer ring, and the tapered roller is sandwiched between the position restricting tool and the small flange portion, so that the small end surface of the tapered roller is in contact with and pressed against the small flange portion. A method of assembling a tapered roller bearing, comprising a second step of restricting relative movement of the tapered roller with respect to an outer ring toward the large end face. 前記位置規制具が、前記外輪に取り付けられる取付片と、前記小鍔部との間で前記円すいころを挟持する規制片とを有し、前記規制片が、前記外輪軌道に沿って配置され、その先端部が前記円すいころの大端面に当接される、請求項１に記載の円すいころ軸受の組立方法。 The position restricting tool has a mounting piece attached to the outer ring and a restricting piece for sandwiching the tapered roller between the small collar parts, and the restricting piece is disposed along the outer ring raceway, The method for assembling a tapered roller bearing according to claim 1, wherein a tip portion thereof is brought into contact with a large end surface of the tapered roller. 円すい形状の内輪軌道とこの内輪軌道の軸方向両側に設けられた小鍔部及び大鍔部とを有する内輪と、円すい形状の外輪軌道を有する外輪と、前記内輪軌道及び前記外輪軌道の間に配置される複数の円すいころと、複数の円すいころの周方向の間隔を保持する保持器とを一体に組み立てた状態で、前記外輪に対して着脱可能に取り付けられ、かつ前記小鍔部との間で前記円すいころを挟持することによって、前記円すいころの小端面を前記小鍔部に当接させて押し付けた状態で前記外輪に対する前記円すいころの大端面側への移動を制限する位置規制具を備えていることを特徴とする円すいころ軸受の組立用治具。 An inner ring having a conical inner ring raceway and small and large collar portions provided on both sides in the axial direction of the inner ring raceway, an outer ring having a conical outer ring raceway, and between the inner ring raceway and the outer ring raceway. a plurality of tapered rollers arranged, and a cage holding the circumferential direction between the plurality of tapered rollers in a state assembled together, detachably attached to the outer ring, and with the small rib portion Position restricting tool that restricts movement of the tapered roller to the large end surface side with respect to the outer ring in a state where the tapered end is held in contact with and pressed against the small flange portion by sandwiching the tapered roller in between An assembly jig for tapered roller bearings. 前記位置規制具が、前記外輪に取り付けられる取付片と、前記小鍔部との間で前記円すいころを挟持する規制片とを有し、前記規制片が、前記外輪軌道に沿って配置され、その先端部が前記円すいころの大端面に当接される、請求項３に記載の円すいころ軸受の組立用治具。 The position restricting tool has a mounting piece attached to the outer ring and a restricting piece for sandwiching the tapered roller between the small collar parts, and the restricting piece is disposed along the outer ring raceway, The assembly jig of the tapered roller bearing according to claim 3, wherein a tip portion thereof is brought into contact with a large end surface of the tapered roller. 前記位置規制具が、周方向に間隔をあけて配置された一部の複数個の円すいころに対応して設けられる、請求項３又は４に記載の円すいころ軸受の組立用治具。   The tapered jig bearing assembly jig according to claim 3 or 4, wherein the position restricting tool is provided corresponding to a part of the plurality of tapered rollers arranged at intervals in the circumferential direction. 前記保持器が、周方向に配列された複数の分割体からなる分割型保持器である、請求項３〜５のいずれか１項に記載の円すいころ軸受の組立用治具。   The assembly jig for the tapered roller bearing according to any one of claims 3 to 5, wherein the cage is a split type cage composed of a plurality of divided bodies arranged in a circumferential direction. 円すい形状の内輪軌道とこの内輪軌道の軸方向両側に設けられた小鍔部及び大鍔部とを有する内輪と、
円すい形状の外輪軌道を有する外輪と、
前記内輪軌道及び前記外輪軌道の間に配置される複数の円すいころと、
複数の円すいころの周方向の間隔を保持する保持器と、
前記内輪、外輪、円すいころ、及び保持器を一体に組み立てた状態で前記外輪に取り付けられ、前記小鍔部との間で前記円すいころを挟持することによって、前記円すいころの小端面を前記小鍔部に当接させて押し付けた状態で前記外輪に対する前記円すいころの大端面側への移動を制限する請求項４〜６のいずれか１項に記載の位置規制具と、
を備えていることを特徴とする円すいころ軸受。 An inner ring having a conical inner ring raceway and small and large collar portions provided on both axial sides of the inner ring raceway;
An outer ring having a conical outer ring raceway;
A plurality of tapered rollers disposed between the inner ring raceway and the outer ring raceway;
A cage for holding a circumferential interval between a plurality of tapered rollers;
The inner ring, the outer ring, the tapered roller, and the cage are integrally assembled and attached to the outer ring, and the tapered end of the tapered roller is clamped between the small collar portion and the small end surface of the tapered roller is reduced. The position restricting tool according to any one of claims 4 to 6, which restricts the movement of the tapered roller with respect to the outer ring toward the large end face in a state of being pressed against the flange .
A tapered roller bearing characterized by comprising:
JP2012156186A 2012-07-12 2012-07-12 Tapered roller bearing assembly method, assembly jig, and tapered roller bearing Expired - Fee Related JP6069920B2 (en)

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