JP2015048924A - Seal member, and roller bearing for wind turbine main shaft - Google Patents

Seal member, and roller bearing for wind turbine main shaft Download PDF

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Publication number
JP2015048924A
JP2015048924A JP2013182152A JP2013182152A JP2015048924A JP 2015048924 A JP2015048924 A JP 2015048924A JP 2013182152 A JP2013182152 A JP 2013182152A JP 2013182152 A JP2013182152 A JP 2013182152A JP 2015048924 A JP2015048924 A JP 2015048924A
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Prior art keywords
seal member
annular space
main shaft
sealing
inner ring
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JP2013182152A
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Japanese (ja)
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寛規 平岡
Hironori Hiraoka
寛規 平岡
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JTEKT Corp
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JTEKT Corp
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Publication of JP2015048924A publication Critical patent/JP2015048924A/en
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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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7859—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a further sealing element
    • F16C33/7863—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a further sealing element mounted to the inner race, e.g. a flinger to use centrifugal effect
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wind Motors (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Of Bearings (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a seal member which can be readily replaced and is excellent in versatility.SOLUTION: A seal member 16 is provided in an annular gap S between an inner race 11 and an outer race 12 which relatively rotate to each other, and seals between the inner race 11 and the outer race 12. The seal member 16 is constituted by a linear elastic material formed to have the length equal to or more than a length in the circumferential direction of an outer periphery 11a of the inner race 11. The seal member 16 is arranged in the annular gap S in a state elastically deformed in an annular shape along the circumferential direction of the inner race 11.

Description

本発明は、互いに相対回転する内側部材と外側部材との間の環状空間を密封するシール部材、及び当該シール部材が配設された風車主軸用転がり軸受に関する。   The present invention relates to a seal member that seals an annular space between an inner member and an outer member that rotate relative to each other, and a rolling bearing for a wind turbine main shaft provided with the seal member.

例えば特許文献１に示すような風力発電装置においては、風力を受ける回転翼が設けられた主軸を回転自在に支持するために、転がり軸受が用いられている。近年、風力発電装置の大型化に伴って、主軸の直径が数メートルを超えることもあり、このような大型の主軸を支持するために、転がり軸受も大型化している。転がり軸受は、外輪と内輪との間の環状空間を密封する円環状のシール部材を備えており、このシール部材によって外部の水分や塵埃が軸受内部に侵入することを防止している。従来、前記シール部材として、生ゴムを金型成形により無端円環状に成形した後、加硫して製造したシール部材が用いられていた。   For example, in a wind power generator as shown in Patent Document 1, a rolling bearing is used to rotatably support a main shaft provided with a rotor blade that receives wind power. In recent years, with the increase in size of wind power generators, the diameter of the main shaft may exceed several meters, and in order to support such a large main shaft, the rolling bearing is also increased in size. The rolling bearing is provided with an annular seal member that seals the annular space between the outer ring and the inner ring, and this seal member prevents external moisture and dust from entering the bearing. Conventionally, as the seal member, a seal member produced by molding raw rubber into an endless annular shape by molding and then vulcanizing it has been used.

特開２０１２−１１２４８８号公報JP 2012-112488 A

しかし、前記無端円環状のシール部材は、一度軸受に組み付けてしまうと交換することができないという問題がある。また、主軸の直径に応じて金型成形されるものであるため、汎用性に欠けるという問題がある。
本発明は、このような問題点に鑑みてなされたものであり、交換を容易に行うことができ、かつ、汎用性に優れたシール部材、及び当該シール部材が配設された風車主軸用転がり軸受を提供することを目的とする。 However, there is a problem that the endless annular seal member cannot be replaced once it is assembled to the bearing. Moreover, since it molds according to the diameter of a main axis | shaft, there exists a problem of lacking in versatility.
The present invention has been made in view of such problems, and can be easily replaced and has excellent versatility, and rolling for a wind turbine main shaft provided with the seal member. An object is to provide a bearing.

（１）本発明のシール部材は、互いに相対回転する内側部材と外側部材との間の環状空間を密封するシール部材であって、前記内側部材の外周面の周方向一周分の長さ以上の長さに形成された線状の弾性材料で構成されており、前記内側部材の周方向に沿って環状に弾性変形した状態で前記環状空間に配設されることを特徴とする。   (1) The seal member of the present invention is a seal member that seals the annular space between the inner member and the outer member that rotate relative to each other, and has a length equal to or greater than the length of one circumference of the outer circumferential surface of the inner member. It is comprised by the linear elastic material formed in length, and is arrange | positioned in the said annular space in the state elastically deformed cyclically | annularly along the circumferential direction of the said inner member.

本発明のシール部材は、内側部材の外周面の周方向一周分の長さ以上の長さに形成された線状の弾性材料で構成されており、内側部材の周方向に沿って環状に弾性変形した状態で環状空間に配設される。このため、環状空間に配設された前記シール部材をその端部から順に内側部材の周方向に沿って取り出すことで環状空間から取り外すことができる。そして、新しい前記シール部材をその端部から順に内側部材の周方向に沿って環状に弾性変形させて嵌め込むことで環状空間に配設することができる。このため、本発明のシール部材は、従来の無端円環状のシール部材と異なり、交換を容易に行うことができる。また、本発明のシール部材は、線状に形成されているため、長さの調整を容易に行うことができる。   The seal member of the present invention is composed of a linear elastic material formed to have a length equal to or longer than the circumference of the outer circumferential surface of the inner member, and is elastic in an annular shape along the circumferential direction of the inner member. Arranged in an annular space in a deformed state. For this reason, the said sealing member arrange | positioned in annular space can be removed from annular space by taking out along the circumferential direction of an inner member in order from the edge part. Then, the new seal member can be disposed in the annular space by being elastically deformed and fitted in an annular shape along the circumferential direction of the inner member in order from the end thereof. For this reason, the seal member of the present invention can be easily replaced unlike the conventional endless annular seal member. Moreover, since the sealing member of the present invention is formed in a linear shape, the length can be easily adjusted.

（２）前記シール部材は、押出し成形によって形成されたものであることが好ましい。押出し成形によって形成することでシール部材の長さの調整が容易にでき、内側部材の直径に応じて成形金型を変更する必要がない。このため、従来の無端円環状のシール部材に比べて汎用性に優れている。   (2) The seal member is preferably formed by extrusion molding. By forming by extrusion, the length of the sealing member can be easily adjusted, and there is no need to change the molding die according to the diameter of the inner member. For this reason, it is excellent in versatility compared with the conventional endless annular seal member.

（３）前記シール部材は、螺旋状に複数回巻回されて前記環状空間に配設された場合に当該シール部材の両端部の周方向位置が略同一となる長さに形成され、前記両端部は、テーパ面をそれぞれ有しており、両テーパ面は、前記シール部材が螺旋状に巻回されて前記環状空間に配設された場合に互いに対向するように形成されていることが好ましい。この場合、シール部材を軸方向の幅が略一定の螺旋状に巻回して環状空間に配設することができる。換言すれば、シール部材の端部において段差が生じるのを防ぐことができる。   (3) The seal member is formed to have a length in which circumferential positions of both end portions of the seal member are substantially the same when the seal member is wound in a spiral shape and disposed in the annular space. The portions each have a tapered surface, and both the tapered surfaces are preferably formed to face each other when the seal member is spirally wound and disposed in the annular space. . In this case, the seal member can be wound in a spiral shape having a substantially constant axial width and disposed in the annular space. In other words, it is possible to prevent a step from occurring at the end of the seal member.

（４）前記シール部材は、互いに平行な２つの側面の一方に係合凸部が形成され、他方に前記係合凸部と係合する係合凹部が形成されており、螺旋状に複数回巻回されることが好ましい。この場合、螺旋状に巻回されたシール部材の軸方向に隣り合う部分同士を一体化することができる。   (4) The seal member has an engagement convex portion formed on one of two side surfaces parallel to each other and an engagement concave portion that engages with the engagement convex portion on the other side. It is preferably wound. In this case, the axially adjacent portions of the sealing member wound spirally can be integrated.

（５）本発明の風車主軸用転がり軸受は、風力を受ける回転翼が一体回転可能に設けられた主軸を支持する風車主軸用転がり軸受であって、内輪と、外輪と、前記内輪と前記外輪との間の環状空間に転動可能に配置された複数の転動体と、を備え、上記（１）〜（４）のいずれか一つに記載のシール部材が前記内輪の周方向に沿って環状に弾性変形した状態で前記環状空間に配設されたことを特徴とする。この風車主軸用転がり軸受は、上記（１）〜（４）に記載のシール部材と同様の効果を奏する。   (5) A rolling mill main shaft rolling bearing according to the present invention is a wind turbine main shaft rolling bearing that supports a main shaft provided with a rotor blade receiving wind power so as to be integrally rotatable, and includes an inner ring, an outer ring, the inner ring, and the outer ring. A plurality of rolling elements arranged to be able to roll in an annular space between the seal member and the seal member according to any one of the above (1) to (4) along the circumferential direction of the inner ring It is arranged in the annular space in a state of being elastically deformed in an annular shape. This windmill main shaft rolling bearing has the same effects as the sealing members described in (1) to (4) above.

（６）また、本発明の風車主軸用転がり軸受は、風力を受ける回転翼が一体回転可能に設けられた主軸を支持する風車主軸用転がり軸受であって、内輪と、外輪と、前記内輪と前記外輪との間の環状空間に転動可能に配置された複数の転動体と、前記環状空間を密封する密封装置と、を備え、前記密封装置は、上記（４）に記載のシール部材と、前記シール部材が前記内輪の周方向に沿って環状に弾性変形した状態で、その両側面を挟持して前記シール部材を前記外輪に固定する固定手段と、を有し、前記シール部材を固定した状態で前記シール部材の係合凸部と係合する係合凹部又は前記シール部材の係合凹部と係合する係合凸部の少なくとも一方が前記固定手段に形成されたことを特徴とする。この風車主軸用転がり軸受によれば、シール部材を固定手段に強固に固定できる。   (6) A rolling mill main shaft rolling bearing according to the present invention is a wind turbine main shaft rolling bearing that supports a main shaft provided with a rotor blade receiving wind power so as to be integrally rotatable, and includes an inner ring, an outer ring, and the inner ring. A plurality of rolling elements arranged to be able to roll in an annular space between the outer ring and a sealing device for sealing the annular space, and the sealing device includes the sealing member according to (4) above Fixing means for fixing the seal member to the outer ring by sandwiching both side surfaces thereof in a state where the seal member is elastically deformed in an annular shape along the circumferential direction of the inner ring, and fixing the seal member In this state, at least one of an engagement concave portion that engages with the engagement convex portion of the seal member or an engagement convex portion that engages with the engagement concave portion of the seal member is formed on the fixing means. . According to this rolling mill main shaft rolling bearing, the seal member can be firmly fixed to the fixing means.

本発明によれば、交換を容易に行うことができ、かつ、汎用性に優れたシール部材、及び当該シール部材を備えた風車主軸用転がり軸受を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, replacement | exchange can be performed easily and the rolling member for windmill main shafts provided with the sealing member excellent in versatility and the said sealing member can be provided.

風力発電装置の側面説明図である。It is side surface explanatory drawing of a wind power generator. 本発明の第１実施形態に係るシール部材が装着された風車主軸用転がり軸受の部分断面説明図である。It is a partial cross section explanatory view of the rolling bearing for windmill spindles with which the seal member concerning a 1st embodiment of the present invention was equipped. 図２に示されるシール部材の風車主軸用転がり軸受への装着前の状態を示す斜視説明図である。FIG. 3 is an explanatory perspective view showing a state before the seal member shown in FIG. 2 is attached to the rolling mill main shaft rolling bearing. 図２に示されるシール部材の風車主軸用転がり軸受への装着後の状態を示す正面説明図である。It is front explanatory drawing which shows the state after mounting | wearing the windmill main shaft rolling bearing of the sealing member shown by FIG. 本発明の第２実施形態に係るシール部材が装着された風車主軸用転がり軸受の部分断面説明図である。It is a fragmentary sectional view of the rolling bearing for windmill spindles with which the seal member concerning a 2nd embodiment of the present invention was equipped. 図５に示されるシール部材の風車主軸用転がり軸受への装着後の状態を示す平面説明図である。FIG. 6 is an explanatory plan view showing a state after the seal member shown in FIG. 5 is attached to the wind turbine main shaft rolling bearing.

以下、本発明のシール部材及び風車主軸用転がり軸受の実施形態について添付図面を参照しながら説明する。
〔第１実施形態〕
図１は、本発明のシール部材１６が配設される風車主軸用転がり軸受１０（以下、単に「転がり軸受」という。）を備えた風力発電装置１の側面説明図である。図１に示すように、風力発電装置１は、一端に風力を受ける回転翼２が一体回転可能に設けられた主軸３と、主軸３の回転力で発電する発電機４と、主軸３と発電機４の入力軸（図示省略）とを結合する増速機５と、これらを支持している支持台６とを備えている。主軸３は、支持台６に立設された軸受ハウジング７に組み込まれた転がり軸受１０によって回転自在に支持されている。 Hereinafter, embodiments of a seal member and a rolling bearing for a wind turbine main shaft according to the present invention will be described with reference to the accompanying drawings.
[First Embodiment]
FIG. 1 is an explanatory side view of a wind turbine generator 1 provided with a wind turbine main shaft rolling bearing 10 (hereinafter simply referred to as “rolling bearing”) on which a seal member 16 of the present invention is disposed. As shown in FIG. 1, a wind turbine generator 1 includes a main shaft 3 provided with a rotating blade 2 that receives wind power at one end so as to be integrally rotatable, a generator 4 that generates electric power by the rotational force of the main shaft 3, a main shaft 3, and power generation The speed increasing machine 5 which couple | bonds with the input shaft (illustration omitted) of the machine 4, and the support stand 6 which supports these are provided. The main shaft 3 is rotatably supported by a rolling bearing 10 incorporated in a bearing housing 7 erected on a support base 6.

図２は、本発明の第１実施形態に係るシール部材１６及び転がり軸受１０の部分断面説明図である。図２に示すように、転がり軸受１０は、円すいころ軸受であり、内輪（内側部材）１１と、外輪（外側部材）１２と、内輪１１と外輪１２との間の環状空間Ｓに転動可能に配設された複数の円すいころ（転動体）１３と、環状空間Ｓを密封する密封装置１４とを備えている。密封装置１４は、転がり軸受１０の内部側Ａのグリース（潤滑剤）が外部側Ｂへ漏れることを防止するとともに、外部側Ｂから水分や塵埃等の異物が内部側Ａへ侵入することを防止するものである。   FIG. 2 is a partial cross-sectional explanatory view of the seal member 16 and the rolling bearing 10 according to the first embodiment of the present invention. As shown in FIG. 2, the rolling bearing 10 is a tapered roller bearing and can roll into an inner ring (inner member) 11, an outer ring (outer member) 12, and an annular space S between the inner ring 11 and the outer ring 12. Are provided with a plurality of tapered rollers (rolling elements) 13 and a sealing device 14 for sealing the annular space S. The sealing device 14 prevents grease (lubricant) on the inner side A of the rolling bearing 10 from leaking to the outer side B, and prevents foreign matters such as moisture and dust from entering the inner side A from the outer side B. To do.

密封装置１４は、内輪１１に圧入された環状のスリンガ１５と、環状に巻回されたシール部材１６と、当該シール部材１６を外輪１２に固定する固定手段１７とを備えている。
スリンガ１５は、断面略Ｌ字状の金属製の環状部材であり、内輪１１の軸方向端部の外周面１１ａに圧入される円筒部１５ａと、当該円筒部１５ａの外部側Ｂの端部から径外方向に屈曲した環状部１５ｂとを有している。 The sealing device 14 includes an annular slinger 15 press-fitted into the inner ring 11, a seal member 16 wound in an annular shape, and a fixing means 17 that fixes the seal member 16 to the outer ring 12.
The slinger 15 is a metal annular member having a substantially L-shaped cross section, and includes a cylindrical portion 15a press-fitted into the outer peripheral surface 11a of the axial end portion of the inner ring 11, and an end portion on the outer side B of the cylindrical portion 15a. And an annular portion 15b bent in the radially outward direction.

シール部材１６は、ニトリルゴム、アクリルゴム、及びフッ素ゴム等の合成ゴムや天然ゴム等の弾性材料からなる。図３は、固定手段１７への装着前のシール部材１６の状態を示す斜視説明図であり、図４は、固定手段１７への装着後のシール部材１６の状態を示す正面説明図である。シール部材１６は、図３に示すように、押出し成形によってスリンガ１５の円筒部１５ａの外周面の周方向一周分と同じ長さか、或いはこれよりも僅かに長い直線状に形成されて、この形状で加硫されたものである。なお、特許請求の範囲における「内側部材の外周面」には、内側部材の直接的な外周面だけでなく、本実施形態のように内側部材に固着されたスリンガ１５の表面にシール部材１６が当接する場合は、その円筒部１５ａの外周面も含まれる。   The seal member 16 is made of an elastic material such as a synthetic rubber such as nitrile rubber, acrylic rubber, and fluorine rubber, or natural rubber. FIG. 3 is a perspective explanatory view showing a state of the seal member 16 before being attached to the fixing means 17, and FIG. 4 is a front explanatory view showing a state of the seal member 16 after being attached to the fixing means 17. As shown in FIG. 3, the seal member 16 is formed in a straight line having the same length as or slightly longer than the circumference of the outer circumferential surface of the cylindrical portion 15a of the slinger 15 by extrusion molding. It is vulcanized with. The “outer peripheral surface of the inner member” in the claims includes not only the direct outer peripheral surface of the inner member but also the seal member 16 on the surface of the slinger 15 fixed to the inner member as in the present embodiment. In the case of contact, the outer peripheral surface of the cylindrical portion 15a is also included.

そして、シール部材１６は、内輪１１の周方向に沿って一周巻回されることで、図４に示すように、有端円環状に弾性変形した状態で後述する固定手段１７により挟持されて環状空間Ｓに配設されている。シール部材１６は、例えば直径１５００ｍｍ以上の円環状に弾性変形した状態で挟持されている。また、シール部材１６は、両端部１６ｂ，１６ｃの端面１６ｎ，１６ｍが転がり軸受１０の上側（図１における上側）、すなわち環状空間Ｓの上部で互いに当接するように巻回されている。   The seal member 16 is wound around the circumferential direction of the inner ring 11, and as shown in FIG. 4, the seal member 16 is clamped by a fixing means 17, which will be described later, in a state of being elastically deformed into an end ring shape. It is disposed in the space S. The seal member 16 is sandwiched in a state of being elastically deformed into an annular shape having a diameter of 1500 mm or more, for example. Further, the seal member 16 is wound so that the end faces 16n and 16m of the both end portions 16b and 16c are in contact with each other on the upper side (the upper side in FIG. 1) of the rolling bearing 10, that is, on the upper part of the annular space S.

シール部材１６には、内輪１１の周方向に沿った直径１５００ｍｍ以上の円環状に弾性変形させて、両端部１６ｂ，１６ｃの端面１６ｎ，１６ｍを互いに当接させることができるように、ＪＩＳ Ｋ６２５３で規定されているディユロメータ硬さで、例えばＡ６０〜Ａ７０の硬さのものが用いられている。   In accordance with JIS K6253, the seal member 16 can be elastically deformed into an annular shape having a diameter of 1500 mm or more along the circumferential direction of the inner ring 11 so that the end surfaces 16n and 16m of both end portions 16b and 16c can be brought into contact with each other. The specified durometer hardness is, for example, a hardness of A60 to A70.

図２に示すように、シール部材１６の長手方向と直交する断面の形状は、略ホームベース状、すなわち、隣り合う２つの直角の角部と、当該各角部と隣り合う２つの鈍角の角部と、を有する略五角形状である。シール部材１６は、径方向内側に配設される楔状の面１６ｄとこれと対向する径方向外側の面１６ｕとの間の寸法が、互いに平行な側面１６ｅ，１６ｇ間の寸法よりも大きい構成である。楔状の面１６ｄは、側面１６ｅ，１６ｇと直交する方向に対して一方の面が６０°傾斜しており、他方の面が３０°傾斜している。   As shown in FIG. 2, the shape of the cross section orthogonal to the longitudinal direction of the seal member 16 is substantially a home base, that is, two adjacent right angle corners and two obtuse angle angles adjacent to the respective corners. And a substantially pentagonal shape. The seal member 16 has a configuration in which the dimension between the wedge-shaped surface 16d disposed on the radially inner side and the radially outer surface 16u opposed thereto is larger than the dimension between the side surfaces 16e and 16g parallel to each other. is there. In the wedge-shaped surface 16d, one surface is inclined by 60 ° with respect to the direction orthogonal to the side surfaces 16e and 16g, and the other surface is inclined by 30 °.

シール部材１６は、楔状の面１６ｄを径方向内側にして巻回されており、楔状に形成された部分は、スリンガ１５の円筒部１５ａと当接するリップ部１６ａとなっている。そして、前述した両傾斜面が交差する稜線によってスリンガ１５との間に線状のシール部が形成される。また、シール部材１６は、楔状の面１６ｄのうち内部側Ａの面が軸方向に対して６０°傾斜するとともに外部側Ｂの面が軸方向に対して３０°傾斜するように配設されている。このようにリップ部１６ａを楔状に形成することで、シール部材１６とスリンガ１５との摩擦による主軸３の回転トルクの損失を少なくしている。   The seal member 16 is wound with the wedge-shaped surface 16d radially inward, and the wedge-shaped portion is a lip portion 16a that contacts the cylindrical portion 15a of the slinger 15. And a linear seal part is formed between the slinger 15 by the ridgeline where both the inclined surfaces mentioned above cross | intersect. Further, the seal member 16 is disposed so that the inner side A surface of the wedge-shaped surface 16d is inclined by 60 ° with respect to the axial direction and the outer side B surface is inclined by 30 ° with respect to the axial direction. Yes. By thus forming the lip portion 16a in a wedge shape, the loss of rotational torque of the main shaft 3 due to friction between the seal member 16 and the slinger 15 is reduced.

固定手段１７は、シール部材１６を軸方向両側から挟持する第１挟持部材１７ａ及び第２挟持部材１７ｂと、この第１挟持部材１７ａ及び第２挟持部材１７ｂを締結固定する締結部材としての締結ボルト１７ｃとを備えている。
第１挟持部材１７ａは、断面略Ｌ字状の金属製の環状部材であり、外輪１２の内周面に圧入された状態で固定されている。第１挟持部材１７ａの内周側には、シール部材１６の外周面１６ｕが当接する内周面１７ｄ、及びシール部材１６の内側面１６ｅが当接する第１挟持面１７ｅが形成されている。第１挟持部材１７ａの外側面には締結ボルト１７ｃが螺合されるねじ孔１７ｆが形成されている。 The fixing means 17 includes a first clamping member 17a and a second clamping member 17b that clamp the seal member 16 from both sides in the axial direction, and a fastening bolt as a fastening member that fastens and fixes the first clamping member 17a and the second clamping member 17b. 17c.
The first clamping member 17 a is a metal annular member having a substantially L-shaped cross section, and is fixed in a state where it is press-fitted into the inner peripheral surface of the outer ring 12. On the inner circumferential side of the first clamping member 17a, an inner circumferential surface 17d with which the outer circumferential surface 16u of the sealing member 16 abuts and a first clamping surface 17e with which the inner side surface 16e of the sealing member 16 abuts are formed. A screw hole 17f into which the fastening bolt 17c is screwed is formed on the outer surface of the first clamping member 17a.

第２挟持部材１７ｂは、金属製の環状板部材であり、その径方向内側には、シール部材１６の外側面１６ｇに当接する第２挟持面１７ｇが形成されている。これにより、シール部材１６は、第１挟持部材１７ａの第１挟持面１７ｅと第２挟持部材１７ｂの第２挟持面１７ｇによって挟持されている。第２挟持部材１７ｂには軸方向に貫通した貫通孔１７ｈが形成されている。   The 2nd clamping member 17b is a metal cyclic | annular board member, The 2nd clamping surface 17g contact | abutted to the outer surface 16g of the sealing member 16 is formed in the radial direction inner side. Thereby, the sealing member 16 is clamped by the first clamping surface 17e of the first clamping member 17a and the second clamping surface 17g of the second clamping member 17b. A through-hole 17h penetrating in the axial direction is formed in the second clamping member 17b.

締結ボルト１７ｃは、第２挟持部材１７ｂの内側面を第１挟持部材１７ａの外側面に当接させた状態で、第２挟持部材１７ｂの貫通孔１７ｈを貫通して、第１挟持部材１７ａのねじ孔１７ｆに螺合されている。これにより、シール部材１６は、第１挟持部材１７ａと第２挟持部材１７ｂとによって挟持された状態で保持されている。   The fastening bolt 17c penetrates the through-hole 17h of the second clamping member 17b in a state where the inner surface of the second clamping member 17b is in contact with the outer surface of the first clamping member 17a. It is screwed into the screw hole 17f. Thereby, the seal member 16 is held in a state of being sandwiched between the first sandwiching member 17a and the second sandwiching member 17b.

〔第２実施形態〕
次に、本発明の第２実施形態に係るシール部材２６及び転がり軸受２０について説明するが、上記第１実施形態と共通する構成については説明を省略し、異なる構成について説明する。図５は、本発明の第２実施形態に係るシール部材２６及び転がり軸受２０の部分断面説明図である。また、図６は、図５に示す転がり軸受２０のうち、芯金１５、内輪１１、及びシール部材２６のみをこれらの上方から見た平面説明図である。 [Second Embodiment]
Next, the seal member 26 and the rolling bearing 20 according to the second embodiment of the present invention will be described, but the description of the configuration common to the first embodiment will be omitted, and a different configuration will be described. FIG. 5 is a partial cross-sectional explanatory view of the seal member 26 and the rolling bearing 20 according to the second embodiment of the present invention. FIG. 6 is an explanatory plan view showing only the core metal 15, the inner ring 11, and the seal member 26 from the upper side of the rolling bearing 20 shown in FIG.

図５及び図６に示すように、シール部材２６は、軸方向に螺旋状に二周巻回されて円環状に弾性変形した状態で第１挟持面２７ｅと第２挟持面２７ｇとの間で挟持されている。シール部材２６の内部側Ａの側面２６ｅには係合凸部２６ｆが形成されており、シール部材２６の外部側Ｂの側面２６ｇには係合凹部２６ｈが形成されている。また、固定手段２７の第１挟持面２７ｅには係合凹部２７ｉが形成されており、第２挟持面２７ｇには係合凸部２７ｊが形成されている。シール部材２６の係合凸部２６ｆと係合凹部２６ｈ、及び固定手段２７の係合凹部２７ｉと係合凸部２７ｊは、シール部材２６が固定手段２７に装着された状態で凹部と凸部が係合するように対応する径方向位置に形成されている。   As shown in FIGS. 5 and 6, the seal member 26 is wound between the first clamping surface 27 e and the second clamping surface 27 g in a state where the sealing member 26 is spirally wound in the axial direction and elastically deformed in an annular shape. It is pinched. An engagement convex portion 26 f is formed on the side surface 26 e on the inner side A of the seal member 26, and an engagement concave portion 26 h is formed on the side surface 26 g on the outer side B of the seal member 26. In addition, an engagement recess 27i is formed on the first clamping surface 27e of the fixing means 27, and an engagement projection 27j is formed on the second clamping surface 27g. The engaging convex portion 26f and the engaging concave portion 26h of the seal member 26, and the engaging concave portion 27i and the engaging convex portion 27j of the fixing means 27 are arranged so that the concave portion and the convex portion are in a state where the sealing member 26 is mounted on the fixing means 27. It forms in the corresponding radial position so that it may engage.

そして、シール部材２６が固定手段２７に装着された状態で、シール部材２６の係合凸部２６ｆと係合凹部２６ｈとが係合している。また、第１挟持面２７ｅの係合凹部２７ｉとシール部材２６の係合凸部２６ｆとが係合しており、第２挟持面２７ｇの係合凸部２７ｊとシール部材２６の係合凹部２６ｈとが係合している。   Then, in a state where the seal member 26 is mounted on the fixing means 27, the engagement convex portion 26f and the engagement concave portion 26h of the seal member 26 are engaged. Further, the engagement concave portion 27i of the first clamping surface 27e and the engagement convex portion 26f of the seal member 26 are engaged, and the engagement convex portion 27j of the second clamping surface 27g and the engagement concave portion 26h of the seal member 26 are engaged. And are engaged.

シール部材２６は、螺旋状に二周巻回して環状空間Ｓに配設された際に両端部２６ｂ，２６ｃが同じ周方向位置となるように、押出し成形によって円筒部１５ａの外周面の周方向一周分の長さの２倍程度の長さの直線状に成形され、この形状で加硫されている。シール部材２６の両端部２６ｂ，２６ｃは、図６に示すように両端面２６ｅ，２６ｇ間の幅が先細りとなる平面視テーパ状に形成されており、方形状のテーパ面２６ｎ，２６ｍを有している。テーパ面２６ｎ，２６ｍは、螺旋状に巻回して環状空間Ｓに配設された際に、互いに平行となって円筒部１５ａの外周面の面内方向に対向するように形成されている。   The circumferential direction of the outer peripheral surface of the cylindrical portion 15a is formed by extrusion so that the sealing member 26 is wound twice in a spiral and disposed in the annular space S so that both end portions 26b and 26c are at the same circumferential position. It is formed into a linear shape having a length of about twice the length of one round and vulcanized in this shape. As shown in FIG. 6, both end portions 26b and 26c of the seal member 26 are formed in a tapered shape in a plan view in which the width between both end surfaces 26e and 26g is tapered, and have rectangular tapered surfaces 26n and 26m. ing. When the taper surfaces 26n and 26m are spirally wound and disposed in the annular space S, the taper surfaces 26n and 26m are formed to be parallel to each other and face the in-plane direction of the outer peripheral surface of the cylindrical portion 15a.

そして、シール部材２６は、両端部２６ｂ，２６ｃが転がり軸受２０の上側（図１における上側）、すなわち環状空間Ｓの上部に位置するように巻回されており、テーパ面２６ｎ，２６ｍが互いに対向している。また、シール部材２６は、内部側Ａの端部２６ｂから外部側Ｂの端部２６ｃへ向かう巻回の向きが内輪１１の回転する向きと反対になるように巻回されている。巻回されたシール部材２６は、内部側Ａの端部２６ｂから一定の軸方向位置において略一周巻回されている内側巻回部２６ｐと、この内側巻回部２６ｐから軸方向外方へ屈曲しており、両テーパ面２６ｎ，２６ｍと接している屈曲部２６ｑと、内側巻回部２６ｐより軸方向外側の一定の軸方向位置において屈曲部２６ｑから外部側Ｂの端部２６ｃまで略一周巻回されている外側巻回部２６ｒと、を有している。   The seal member 26 is wound so that both end portions 26b and 26c are located above the rolling bearing 20 (upper side in FIG. 1), that is, above the annular space S, and the tapered surfaces 26n and 26m face each other. doing. The seal member 26 is wound such that the winding direction from the inner side A end portion 26 b to the outer side B end portion 26 c is opposite to the rotation direction of the inner ring 11. The wound sealing member 26 has an inner winding portion 26p that is wound around the inner side A end portion 26b at a certain axial position and is bent outward in the axial direction from the inner winding portion 26p. The bent portion 26q in contact with both the taper surfaces 26n and 26m, and substantially one turn from the bent portion 26q to the end portion 26c on the outer side B at a certain axial position outside the inner winding portion 26p in the axial direction. And an outer winding portion 26r that is rotated.

本発明の第１，第２実施形態に係るシール部材１６，２６は、内輪１１の外周面１１ａの周方向一周分の長さ以上の長さに形成された直線状の合成ゴムで構成されており、内輪１１の周方向に沿って円環状に弾性変形した状態で当該環状空間Ｓに配設される。このため、環状空間Ｓに配設されたシール部材１６，２６をその端部１６ｃ，２６ｃから順に環状空間Ｓの周方向に沿って取り出すことで環状空間Ｓから取り外すことができる。そして、新しいシール部材１６，２６をその端部１６ｂ，２６ｂから順に環状空間Ｓの周方向に沿って円環状に弾性変形させて嵌め込むことで環状空間Ｓに配設することができる。このため、シール部材１６，２６は、従来の無端円環状のシール部材と異なり、交換が容易である。   The sealing members 16 and 26 according to the first and second embodiments of the present invention are configured by a linear synthetic rubber formed to have a length equal to or longer than the length of one circumferential direction of the outer peripheral surface 11a of the inner ring 11. And disposed in the annular space S in a state of being elastically deformed in an annular shape along the circumferential direction of the inner ring 11. For this reason, the seal members 16 and 26 disposed in the annular space S can be removed from the annular space S by taking out the end portions 16c and 26c in order along the circumferential direction of the annular space S. Then, the new seal members 16 and 26 can be disposed in the annular space S by being elastically deformed into an annular shape along the circumferential direction of the annular space S in order from the end portions 16b and 26b. For this reason, unlike the conventional endless annular seal member, the seal members 16 and 26 are easy to replace.

また、従来の無端円環状のシール部材は、主軸３の径の変更等に伴って径が変更されると、成形金型も変更する必要があるが、本発明の第１，第２実施形態に係るシール部材１６，２６は、主軸３の径が変更されても押出し成形で押し出す長さを変更するだけで対応できる。このため、シール部材１６，２６は、従来の無端円環状のシール部材に比べて汎用性に優れている。なお、押出し成形によりシール部材を製造することが、長さの調整が容易であるために好ましいが、射出成形等で長い線状に形成した後、必要な長さに切断するなどして長さの調整をすることでシール部材を製造してもよい。   In addition, when the diameter of the conventional endless annular seal member is changed in accordance with the change of the diameter of the main shaft 3 or the like, it is also necessary to change the molding die, but the first and second embodiments of the present invention. The sealing members 16 and 26 according to the above can cope with the change in the length of extrusion by extrusion even if the diameter of the main shaft 3 is changed. For this reason, the sealing members 16 and 26 are more versatile than the conventional endless annular sealing member. In addition, it is preferable to manufacture the seal member by extrusion molding because it is easy to adjust the length, but after forming it into a long linear shape by injection molding or the like, the length is obtained by cutting to a required length. You may manufacture a sealing member by adjusting these.

また、本発明の第１，第２実施形態に係るシール部材１６，２６は、両端部１６ｂ，１６ｃ，２６ｂ，２６ｃが転がり軸受１０，２０の上側に位置するように巻回されている。このため、両端部１６ｂ，１６ｃ，２６ｂ，２６ｃの間から転がり軸受１０，２０の内部側Ａのグリースが外部側Ｂへ漏れること、及び外部側Ｂから水分や塵埃等の異物が内部側Ａへ流入することを防止できる。   Further, the sealing members 16 and 26 according to the first and second embodiments of the present invention are wound so that both end portions 16b, 16c, 26b and 26c are positioned above the rolling bearings 10 and 20. For this reason, grease on the inner side A of the rolling bearings 10 and 20 leaks to the outer side B from between both ends 16b, 16c, 26b, and 26c, and foreign matters such as moisture and dust enter the inner side A from the outer side B. Inflow can be prevented.

本発明の第２実施形態に係るシール部材２６は、螺旋状に２回巻回して環状空間Ｓに配設された場合に両端部２６ｂ，２６ｃの周方向位置が略同一となる長さに形成されている。また、両端部２６ｂ，２６ｃは、テーパ状に形成されており、テーパ面２６ｎ，２６ｍは、螺旋状に巻回して環状空間Ｓに配設された場合に互いに円筒部１５ａの外周面の面内方向に対向する。このため、シール部材２６を軸方向の幅が略一定の螺旋状に巻回して環状空間Ｓに配設することができる。その結果、シール部材２６を固定部材２７によって挟持させた状態において、シール部材２６と第１挟持面２７ｅ及び第２挟持面２７ｇとの間に隙間が生じないので、密封装置２４の密封性を良くすることができる。   The seal member 26 according to the second embodiment of the present invention is formed in such a length that the circumferential positions of both end portions 26b and 26c are substantially the same when the seal member 26 is spirally wound twice and disposed in the annular space S. Has been. Further, both end portions 26b and 26c are formed in a tapered shape, and when the tapered surfaces 26n and 26m are spirally wound and disposed in the annular space S, they are mutually in-plane with the outer peripheral surface of the cylindrical portion 15a. Opposite direction. For this reason, the seal member 26 can be disposed in the annular space S by being wound in a spiral shape having a substantially constant width in the axial direction. As a result, there is no gap between the sealing member 26 and the first clamping surface 27e and the second clamping surface 27g in a state where the sealing member 26 is clamped by the fixing member 27, so that the sealing performance of the sealing device 24 is improved. can do.

また、本発明の第２実施形態に係るシール部材２６は、内部側Ａの端部２６ｂから外部側Ｂの端部２６ｃへ向かう巻回の向きが内輪１１の回転する向きと反対になるように巻回されている。このため、転がり軸受２０の内部側Ａのグリースがシール部材２６の軸方向に互いに対面する側面２６ｅ，２６ｇの間を通って外部側Ｂへ漏れることを防止できる。   Further, the seal member 26 according to the second embodiment of the present invention is configured such that the winding direction from the inner side A end portion 26 b to the outer side B end portion 26 c is opposite to the rotation direction of the inner ring 11. It is wound. For this reason, it is possible to prevent the grease on the inner side A of the rolling bearing 20 from leaking to the outer side B through the space between the side surfaces 26e and 26g facing each other in the axial direction of the seal member 26.

また、本発明の第２実施形態に係る転がり軸受２０では、シール部材２６の互いに平行な２つの側面２６ｅ，２６ｇの一方に形成された係合凸部２６ｆと他方に形成された係合凹部２６ｈとが係合する。また、第１挟持面２７ｅの係合凹部２７ｉとシール部材２６の係合凸部２６ｆとが係合し、シール部材２６の係合凹部２６ｈと第２挟持面２７ｇの係合凸部２７ｊとが係合する。このため、螺旋状に巻回されたシール部材２６の軸方向に隣り合う部分同士を一体化できる。また、シール部材２６を固定手段２７に強固に固定できる。   Further, in the rolling bearing 20 according to the second embodiment of the present invention, the engagement convex portion 26f formed on one of the two parallel side surfaces 26e and 26g of the seal member 26 and the engagement concave portion 26h formed on the other side. And engage. Further, the engagement concave portion 27i of the first clamping surface 27e and the engagement convex portion 26f of the seal member 26 are engaged, and the engagement concave portion 26h of the seal member 26 and the engagement convex portion 27j of the second clamping surface 27g are engaged. Engage. For this reason, the axially adjacent portions of the seal member 26 wound in a spiral shape can be integrated. Further, the seal member 26 can be firmly fixed to the fixing means 27.

〔変形例〕
なお、本発明は上述の実施形態に限定されるものではなく、特許請求の範囲内において種々の変更が可能である。例えば、シール部材１６，２６は、上述の実施形態のように直線状であることが取扱い易いために好ましいが、弓状、或いはスリンガ１５の円筒部１５ａの外周よりも大きな半径を有する円弧状であってもよい。また、第１実施形態において、シール部材１６は、外周面１６ｕ側（図４における外周）がリップ部１６ａ側（図４における内周）よりも長く形成されていてもよい。この場合、両端面１６ｎ，１６ｍが互いに当接し易くなる。さらに、第２実施形態においてシール部材２６の巻き数は、要求される密封性能に応じて適宜変更することができる。 [Modification]
The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims. For example, the seal members 16 and 26 are preferable to be straight as in the above-described embodiment because they are easy to handle. However, the seal members 16 and 26 are arc-shaped or arc-shaped having a larger radius than the outer periphery of the cylindrical portion 15a of the slinger 15. There may be. In the first embodiment, the seal member 16 may be formed such that the outer peripheral surface 16u side (the outer periphery in FIG. 4) is longer than the lip portion 16a side (the inner periphery in FIG. 4). In this case, both end surfaces 16n and 16m are likely to come into contact with each other. Furthermore, in the second embodiment, the number of windings of the sealing member 26 can be appropriately changed according to the required sealing performance.

２：回転翼、３：主軸、１０，２０：転がり軸受（風車主軸用転がり軸受）、１１：内輪（内側部材）、１１ａ：外周面、１２：外輪（外側部材）、１３：円すいころ（転動体）、１４：密封装置、１６，２６：シール部材、１６ｂ，１６ｃ，２６ｂ，２６ｃ：端部、１６ｎ，１６ｍ：端面、２６ｎ，２６ｍ：テーパ面、１６ｅ，１６ｇ，２６ｅ，２６ｇ：側面、２６ｆ：係合凸部、２６ｈ：係合凹部、２７：固定手段、２７ｉ：係合凹部、２７ｊ：係合凸部、Ｓ：環状空間   2: rotor blade, 3: main shaft, 10, 20: rolling bearing (rolling bearing for wind turbine main shaft), 11: inner ring (inner member), 11a: outer peripheral surface, 12: outer ring (outer member), 13: tapered roller (rolling) Moving body), 14: sealing device, 16, 26: sealing member, 16b, 16c, 26b, 26c: end, 16n, 16m: end face, 26n, 26m: tapered surface, 16e, 16g, 26e, 26g: side face, 26f : Engaging convex part, 26h: engaging concave part, 27: fixing means, 27i: engaging concave part, 27j: engaging convex part, S: annular space

Claims (6)

互いに相対回転する内側部材と外側部材との間の環状空間を密封するシール部材であって、
前記内側部材の外周面の周方向一周分の長さ以上の長さに形成された線状の弾性材料で構成されており、前記内側部材の周方向に沿って環状に弾性変形した状態で前記環状空間に配設されることを特徴とするシール部材。 A sealing member for sealing an annular space between an inner member and an outer member that rotate relative to each other;
It is composed of a linear elastic material formed with a length equal to or greater than the length of one circumferential direction of the outer peripheral surface of the inner member, and is elastically deformed annularly along the circumferential direction of the inner member. A seal member disposed in an annular space. 押出し成形によって形成された請求項１に記載のシール部材。   The seal member according to claim 1, which is formed by extrusion molding. 前記シール部材は、螺旋状に複数回巻回されて前記環状空間に配設された場合に当該シール部材の両端部の周方向位置が略同一となる長さに形成され、
前記両端部は、テーパ面をそれぞれ有しており、
両テーパ面は、前記シール部材が螺旋状に巻回されて前記環状空間に配設された場合に互いに対向するように形成された請求項１又は請求項２に記載のシール部材。 The seal member is formed in such a length that the circumferential positions of both ends of the seal member are substantially the same when the seal member is wound in a spiral shape and disposed in the annular space.
The both end portions each have a tapered surface,
The both taper surfaces are seal members according to claim 1 or 2, which are formed so as to face each other when the seal members are spirally wound and disposed in the annular space. 互いに平行な２つの側面の一方に係合凸部が形成され、他方に前記係合凸部と係合する係合凹部が形成されており、螺旋状に複数回巻回される請求項１又は請求項２に記載のシール部材。   The engagement convex part is formed in one of the two side surfaces parallel to each other, and the engagement concave part that engages with the engagement convex part is formed on the other side. The seal member according to claim 2. 風力を受ける回転翼が一体回転可能に設けられた主軸を支持する風車主軸用転がり軸受であって、
内輪と、外輪と、前記内輪と前記外輪との間の環状空間に転動可能に配置された複数の転動体と、を備え、
請求項１〜請求項４のいずれか一項に記載のシール部材が前記内輪の周方向に沿って環状に弾性変形した状態で前記環状空間に配設されたことを特徴とする風車主軸用転がり軸受。 A rolling bearing for a wind turbine main shaft that supports a main shaft provided with a rotor blade that receives wind power so as to be integrally rotatable,
An inner ring, an outer ring, and a plurality of rolling elements arranged to roll in an annular space between the inner ring and the outer ring,
The rolling element for a wind turbine main shaft, wherein the seal member according to any one of claims 1 to 4 is disposed in the annular space in a state of being elastically deformed in an annular shape along a circumferential direction of the inner ring. bearing. 風力を受ける回転翼が一体回転可能に設けられた主軸を支持する風車主軸用転がり軸受であって、
内輪と、外輪と、前記内輪と前記外輪との間の環状空間に転動可能に配置された複数の転動体と、前記環状空間を密封する密封装置と、を備え、
前記密封装置は、請求項４に記載のシール部材と、前記シール部材が前記内輪の周方向に沿って環状に弾性変形した状態で、その両側面を挟持して前記シール部材を前記外輪に固定する固定手段と、を有し、
前記シール部材を固定した状態で前記シール部材の係合凸部と係合する係合凹部又は前記シール部材の係合凹部と係合する係合凸部の少なくとも一方が前記固定手段に形成されたことを特徴とする風車主軸用転がり軸受。 A rolling bearing for a wind turbine main shaft that supports a main shaft provided with a rotor blade that receives wind power so as to be integrally rotatable,
An inner ring, an outer ring, a plurality of rolling elements arranged to roll in an annular space between the inner ring and the outer ring, and a sealing device for sealing the annular space,
The sealing device includes the seal member according to claim 4 and the seal member fixed to the outer ring by sandwiching both side surfaces thereof in a state where the seal member is elastically deformed in an annular shape along the circumferential direction of the inner ring. Fixing means for
At least one of an engagement concave portion that engages with an engagement convex portion of the seal member in a state where the seal member is fixed or an engagement convex portion that engages with an engagement concave portion of the seal member is formed on the fixing means. A rolling bearing for a wind turbine main shaft characterized by that.
JP2013182152A 2013-09-03 2013-09-03 Seal member, and roller bearing for wind turbine main shaft Pending JP2015048924A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108713108A (en) * 2016-03-07 2018-10-26 日本精工株式会社 Rolling bearing and air turbine bearing unit and dentistry air turbine handpiece

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108713108A (en) * 2016-03-07 2018-10-26 日本精工株式会社 Rolling bearing and air turbine bearing unit and dentistry air turbine handpiece

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