JP2000000606A - Structure of seal for rolling bearing - Google Patents
Structure of seal for rolling bearingInfo
- Publication number
- JP2000000606A JP2000000606A JP10167450A JP16745098A JP2000000606A JP 2000000606 A JP2000000606 A JP 2000000606A JP 10167450 A JP10167450 A JP 10167450A JP 16745098 A JP16745098 A JP 16745098A JP 2000000606 A JP2000000606 A JP 2000000606A
- Authority
- JP
- Japan
- Prior art keywords
- annular member
- seal
- peripheral surface
- rotating shaft
- flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F16C19/38—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 two or more rows of rollers
- F16C19/383—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
- F16C19/388—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with four rows, i.e. four row tapered roller bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/07—Adaptation of roll neck bearings
- B21B31/078—Sealing devices
-
- 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
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
- F16C13/02—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
- 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
-
- 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
- F16C33/80—Labyrinth sealings
-
- 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
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、転がり軸受のシー
ル構造に係り、例えば圧延機のロールネック等に用いら
れる転がり軸受のシール構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing structure for a rolling bearing, and more particularly to a sealing structure for a rolling bearing used for a roll neck of a rolling mill.
【０００２】[0002]
【従来の技術】例えば圧延機のロールネック等に用いら
れる４列円すいころ軸受は、高荷重を受けながら高速回
転するため、軸受内部への異物浸入を防止するためのシ
ール構造として接触式オイルシールを採用すると、摩擦
によりオイルシールのリップ部に摩耗，発熱が生じやす
い。この問題に対して、図７に示す密封形多列ころ軸受
70は、軸受内部への異物浸入を防止するためのシール構
造としてラビリンスシール71が採用されている（特公平
３-66963号公報参照：従来例）。2. Description of the Related Art For example, a four-row tapered roller bearing used for a roll neck of a rolling mill rotates at a high speed while receiving a high load. Therefore, a contact type oil seal is used as a seal structure for preventing foreign matter from entering the inside of the bearing. When, the friction and the lip of the oil seal are liable to cause abrasion and heat generation. To solve this problem, a sealed multi-row roller bearing shown in FIG.
A labyrinth seal 71 is adopted as a seal structure 70 for preventing foreign matter from entering the inside of the bearing (see Japanese Patent Publication No. 3-66963: conventional example).
【０００３】密封形多列ころ軸受70は、内輪72および外
輪73間に円すいころ74が複数配置され、内輪72の端部に
内側環状体75，76，77が設けられているとともに、外輪
72の端部に外側環状体78，79が設けられている。内側環
状体75，76，77および外側環状体78，79は、互いにフラ
ンジ80を軸方向に沿って交互に離間配置するように積層
され、かつ、それぞれ固定ボルト81，82により一体化さ
れることによりラビリンスシール71を形成している。こ
のような密封形多列ころ軸受70によれば、非接触式のラ
ビリンスシール71が採用されているため、良好なシール
性が得られるとともに摩耗，発熱が生じにくいという効
果が得られる。A sealed multi-row roller bearing 70 has a plurality of tapered rollers 74 disposed between an inner ring 72 and an outer ring 73, and inner ring members 75, 76, 77 provided at the end of the inner ring 72, and an outer ring.
Outer annular bodies 78, 79 are provided at the ends of 72. The inner annular bodies 75, 76, 77 and the outer annular bodies 78, 79 are laminated so that the flanges 80 are alternately spaced apart from each other along the axial direction, and are integrated by fixing bolts 81, 82, respectively. Form a labyrinth seal 71. According to such a sealed type multi-row roller bearing 70, since the non-contact type labyrinth seal 71 is employed, good sealing properties can be obtained, and an effect that abrasion and heat generation hardly occur can be obtained.
【０００４】[0004]
【発明が解決しようとする課題】ところで、前述した従
来例は、ラビリンスシール71を形成するために、内側環
状体75，76，77および外側環状体78，79を積層配置する
とともに、それぞれ固定ボルト81，82により一体化する
必要があるため、構成部品が多数化するとともに、組立
工程が煩雑化するという問題があった。本発明は、前述
した問題点に鑑みてなされたものであり、その目的はラ
ビリンスシールを形成するにあたって、構成部品を少数
化できるとともに、組立工程を簡略化できる転がり軸受
のシール構造を提供することにある。By the way, in the conventional example described above, in order to form the labyrinth seal 71, the inner annular bodies 75, 76, 77 and the outer annular bodies 78, 79 are stacked and arranged, and the fixing bolts are respectively provided. Since it is necessary to integrate the components 81 and 82, there are problems that the number of components increases and the assembly process becomes complicated. The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a sealing structure for a rolling bearing that can reduce the number of components and simplify an assembly process when forming a labyrinth seal. It is in.
【０００５】[0005]
【課題を解決するための手段】前述した目的を達成する
ために、本発明は、回転軸およびハウジング間に配置さ
れた複数の転動部材を有し、前記回転軸および前記ハウ
ジングのうちの一方における周方向に沿って設けられた
溝部に対して、前記回転軸および前記ハウジングのうち
の他方における周方向に沿って設けられたフランジが非
接触状態で挿入配置されたラビリンスシールを備えた転
がり軸受のシール構造であって、前記回転軸および前記
ハウジングのうちの一方に支持される環状部材を有し、
前記環状部材の所定位置に破断部が設けられているとと
もに、その周面に前記溝部および前記フランジのうちの
一方が形成され、前記環状部材が初期直径を弾性的に維
持可能であることを特徴としている。In order to achieve the above-mentioned object, the present invention comprises a plurality of rolling members disposed between a rotating shaft and a housing, wherein one of the rotating shaft and the housing is provided. A rolling bearing provided with a labyrinth seal in which a flange provided along the circumferential direction on the other of the rotating shaft and the housing is inserted in a non-contact state with respect to a groove provided along the circumferential direction in. A seal structure, comprising an annular member supported by one of the rotating shaft and the housing,
A break portion is provided at a predetermined position of the annular member, and one of the groove portion and the flange is formed on a peripheral surface thereof, and the annular member can elastically maintain an initial diameter. And
【０００６】ここで、ラビリンスシールとしては、回転
軸の軸方向に対して略クランク状の通路を形成するよう
に、溝部の内部にフランジが非接触状態で挿入配置され
ていればよく、回転軸の外周面およびハウジングの内周
面からそれぞれ複数の鍔部が突出している形態に限定し
ない。すなわち、溝部およびフランジとしては、回転軸
およびハウジングに直接形成される構造以外にも、内
輪，外輪を介して回転軸あるいはハウジングに設けてお
く構造を採用してもよい。Here, as the labyrinth seal, a flange may be inserted and arranged in a non-contact state inside the groove so as to form a substantially crank-shaped passage in the axial direction of the rotating shaft. The present invention is not limited to a form in which a plurality of flanges protrude from the outer peripheral surface and the inner peripheral surface of the housing. That is, in addition to the structure directly formed on the rotating shaft and the housing, a structure provided on the rotating shaft or the housing via the inner ring and the outer ring may be adopted as the groove and the flange.
【０００７】一方、環状部材としては、適宜なばね作用
を有する金属帯や硬質樹脂帯を略Ｃ字状に湾曲形成して
おけばよく、例えば特定部分が容易に変形するように、
部分的に肉厚を小さく設定しておく構造や、あるいはば
ね鋼板を介して一対の半円部材を連結しておく構造を採
用できる。そして、この環状部材としては、適宜な軟質
樹脂により全体を被覆しておいてもよく、回転軸やハウ
ジングに対して直接嵌合してもよく、あるいは内輪や外
輪を介して固定してもよい。また、環状部材をハウジン
グに対して直接、あるいは外輪を介して固定する場合に
は、例えば半円弧状に形成された一対の固定部材により
環状部材を被覆固定してもよい。On the other hand, as the annular member, a metal band or a hard resin band having an appropriate spring action may be formed into a substantially C-shape, and, for example, a specific portion may be easily deformed.
A structure in which the wall thickness is partially set to be small or a structure in which a pair of semicircular members are connected via a spring steel plate can be adopted. The entire annular member may be covered with an appropriate soft resin, may be directly fitted to a rotating shaft or a housing, or may be fixed via an inner ring or an outer ring. . When the annular member is fixed to the housing directly or via an outer ring, for example, the annular member may be covered and fixed by a pair of fixing members formed in a semicircular arc shape.
【０００８】さらに、破断部としては、環状部材の径方
向や接線方向に沿う直線的な破断面を有していればよ
く、あるいは環状部材の端部同士が相互に係合可能な段
継ぎ，はめ継ぎ等の構造を採用してもよい。Further, the breakable portion may have a linear broken surface along the radial direction or the tangential direction of the annular member, or a step joint in which the ends of the annular member can engage with each other. A structure such as fitting may be employed.
【０００９】このように構成された転がり軸受のシール
構造においては、例えば環状部材の内周面にフランジが
形成され、かつ、環状部材が初期直径を弾性的に維持可
能な略Ｃ字状であるため、回転軸に溝部が形成されてい
る場合、環状部材を拡径させた状態で溝部に被せ、次い
で環状部材を初期直径に復帰させれば溝部内にフランジ
を非接触状態で挿入配置できることになる。そして、環
状部材は、フランジに対して直接あるいは外輪等を介し
て圧入すればよい。[0009] In the sealing structure of a rolling bearing thus configured, for example, a flange is formed on the inner peripheral surface of the annular member, and the annular member is substantially C-shaped so that the initial diameter can be elastically maintained. Therefore, when a groove is formed on the rotating shaft, the annular member is covered with the groove in a state where the diameter is expanded, and then, if the annular member is returned to the initial diameter, the flange can be inserted and arranged in a non-contact state in the groove. Become. Then, the annular member may be press-fitted directly into the flange or via an outer ring or the like.
【００１０】一方、このように構成された転がり軸受の
シール構造においては、例えば環状部材の外周面にフラ
ンジが形成され、かつ、ハウジングに溝部が形成されて
いる場合、環状部材を略螺旋状に縮径させた状態でハウ
ジング内に配置し、次いで環状部材を初期直径に復帰さ
せれば溝部内にフランジを非接触状態で挿入配置できる
ことになる。そして、回転軸は、初期直径に復帰した環
状部材を軸通すればよい。従って、このような転がり軸
受のシール構造においては、ラビリンスシールを形成す
るにあたって、従来に比較して、構成部品を少数化でき
るとともに組立工程を簡略化できることになる。On the other hand, in the sealing structure of a rolling bearing configured as described above, for example, when the flange is formed on the outer peripheral surface of the annular member and the groove is formed in the housing, the annular member is formed into a substantially spiral shape. If the annular member is returned to its initial diameter after being placed in the housing with the diameter reduced, the flange can be inserted and placed in the groove in a non-contact state. Then, the rotating shaft only has to pass through the annular member that has returned to the initial diameter. Therefore, in such a sealing structure of a rolling bearing, in forming a labyrinth seal, the number of components can be reduced and the assembling process can be simplified as compared with the related art.
【００１１】[0011]
【発明の実施の形態】以下、本発明に係る実施形態を図
面に基づいて詳細に説明する。図１に示すように、本発
明に係る実施形態である４列円すいころ軸受10は、高い
負荷が掛かった状態で高速回転する圧延機のロールネッ
ク等に用いられ、内輪部20および外輪部30間に多数の円
すいころ40が４列に配列されている。Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, a four-row tapered roller bearing 10 according to an embodiment of the present invention is used for a roll neck of a rolling mill that rotates at high speed under a high load, and includes an inner ring portion 20 and an outer ring portion 30. Many tapered rollers 40 are arranged in four rows between them.
【００１２】内輪部20は、中間シール21を介して同軸配
置された一対の複列内輪22，22を有している。複列内輪
22は、外周面に沿って一対の内輪軌道23，23が形成され
ているとともに、外周面における軸方向開放端部に小径
部24が設けられている。外輪部30は、複列内輪22，22を
跨ぐように配置される複列外輪31と、複列外輪31の両端
部に外輪間座32，32を介して隣接配置される単列外輪3
3，33とを含んで構成されている。複列外輪31の内周面
には一対の外輪軌道34，34が形成され、単列外輪33の内
周面には外輪軌道35が形成されている。この外輪部30の
軸方向長さは、内輪部20の軸方向長さよりも小さく設定
されている。The inner ring portion 20 has a pair of double-row inner rings 22, 22 coaxially arranged with an intermediate seal 21 interposed therebetween. Double row inner ring
22 has a pair of inner raceways 23, 23 formed along the outer peripheral surface, and a small diameter portion 24 is provided at an axially open end of the outer peripheral surface. The outer race portion 30 includes a double-row outer race 31 disposed so as to straddle the double-row inner races 22, 22, and a single-row outer race 3 disposed adjacent to both ends of the double-row outer race 31 via outer race spacers 32, 32.
3 and 33 are included. A pair of outer raceways 34, 34 is formed on the inner peripheral surface of the double row outer race 31, and an outer raceway 35 is formed on the inner peripheral surface of the single row outer race 33. The axial length of the outer race 30 is set smaller than the axial length of the inner race 20.
【００１３】円すいころ40は、隣接する他列の円すいこ
ろ40に対して大径部あるいは小径部が対峙するように配
向され、鋼板を打ち抜いて製造された保持器41により周
方向に沿って均等に保持されている。そして、この４列
円すいころ軸受10は、軸受内部への異物浸入を防止する
ために、軸方向両端部にラビリンスシール50が設けられ
ている。The tapered rollers 40 are oriented such that the large diameter portion or the small diameter portion is opposed to the adjacent row of tapered rollers 40, and are evenly distributed in the circumferential direction by a retainer 41 manufactured by punching a steel plate. Is held in. The four-row tapered roller bearing 10 is provided with labyrinth seals 50 at both ends in the axial direction in order to prevent foreign matter from entering the inside of the bearing.
【００１４】図２および図３にも示すように、ラビリン
スシール50は、複列内輪22の小径部24に嵌合された第１
環状部材51と、単列外輪33の端面にシールホルダ60を介
して位置決めされた第２環状部材52とを含んで構成され
ている。第１環状部材51は、小径部24に嵌合可能な円環
部53と、円環部53の外周面に設けられた３条の鍔部54と
を有している。鍔部54は断面略矩形状とされ、それぞれ
の端面間寸法が均等になるように配置されている。な
お、第１環状部材51は、円環部53の外周面に３条の鍔部
54が突設されているため、換言すれば円環部53の外周面
に一対の溝部が形成されていることになる。As shown also in FIGS. 2 and 3, the labyrinth seal 50 is provided on the first row of small diameter portions 24 of the double row inner ring 22.
An annular member 51 and a second annular member 52 positioned on the end face of the single-row outer ring 33 via the seal holder 60 are included. The first annular member 51 has an annular portion 53 that can be fitted to the small diameter portion 24, and three flanges 54 provided on the outer peripheral surface of the annular portion 53. The flange 54 has a substantially rectangular cross section, and is arranged so that the distance between the end faces becomes uniform. In addition, the first annular member 51 has three flanges on the outer peripheral surface of the annular portion 53.
Since the projection 54 is provided, in other words, a pair of grooves is formed on the outer peripheral surface of the annular portion 53.
【００１５】図４および図５にも示すように、第２環状
部材52は、一対の半円部材55，55と、半円部材55，55を
連結する連結部材56と、半円部材55，55および連結部材
56を一括被覆する被覆部57とを有している。半円部材55
は、断面略Ｌ字状の金属帯板を厚み方向に湾曲させるこ
とにより形成されていて、それぞれの内周面が対向配置
されている。連結部材56は、ばね作用を有する薄肉の金
属帯板とされ、半円部材55，55の内周面に沿うととも
に、半円部材55，55の一端部（図４中下端部）間に架け
渡され、かつ、リベット58により固定されている。As shown in FIGS. 4 and 5, the second annular member 52 includes a pair of semicircular members 55, 55, a connecting member 56 for connecting the semicircular members 55, 55, and a semicircular member 55, 55. 55 and connecting members
And a covering portion 57 for covering the entirety of the covering 56. Semicircular member 55
Are formed by bending a metal strip having a substantially L-shaped cross section in the thickness direction, and the respective inner peripheral surfaces are arranged to face each other. The connecting member 56 is a thin metal strip having a spring action, extends along the inner peripheral surfaces of the semicircular members 55, 55, and is bridged between one ends (lower ends in FIG. 4) of the semicircular members 55, 55. Delivered and secured by rivets 58.
【００１６】被覆部57は、耐油性等を有する適宜な硬質
樹脂製とされ、半円部材55，55の外周面が部分的に露出
するように被覆するとともに、内周面に一対の鍔部59が
設けられている。鍔部59は断面略矩形状とされ、それぞ
れの端面間寸法が、前述した鍔部54の端面間寸法に対応
するように配置されている。このような被覆部57は、半
円部材55，55の他端部（図４中上端部）が離反できるよ
うに、所定位置に破断部57Ａが設けられている。破断部
57Ａは、第２環状部材52の径方向に沿って直線的に設け
られている。The covering portion 57 is made of a suitable hard resin having oil resistance or the like, covers the semicircular members 55, 55 so that the outer peripheral surfaces thereof are partially exposed, and has a pair of flange portions on the inner peripheral surface. 59 are provided. The flange 59 has a substantially rectangular cross section, and is arranged such that the distance between the end faces thereof corresponds to the distance between the end faces of the flange 54 described above. The covering portion 57 is provided with a break portion 57A at a predetermined position so that the other end portions (upper end portions in FIG. 4) of the semicircular members 55, 55 can be separated from each other. Break
57A is linearly provided along the radial direction of the second annular member 52.
【００１７】このような第２環状部材52は、あらかじめ
被覆部57の破断部57Ａが閉じた状態を初期直径としてい
る。従って、第２環状部材52は、連結部材56の所定位置
を変形させながら半円部材55，55の一端部同士が離反さ
せることにより拡径可能とされ、かつ、初期直径に復帰
するような、すなわち縮径するような弾性力が生じるよ
うになっている。なお、第２環状部材52は、被覆部57の
内周面に一対の鍔部59が突設されているため、換言すれ
ば被覆部57の内周面に溝部が形成されていることにな
る。The initial diameter of the second annular member 52 is such that the broken portion 57A of the covering portion 57 is closed in advance. Therefore, the second annular member 52 can be expanded in diameter by causing the one end portions of the semicircular members 55 to move away from each other while deforming the predetermined position of the connecting member 56, and can return to the initial diameter. In other words, an elastic force that reduces the diameter is generated. Since the second annular member 52 has a pair of flanges 59 protruding from the inner peripheral surface of the covering portion 57, in other words, a groove is formed on the inner peripheral surface of the covering portion 57. .
【００１８】図３に戻って、シールホルダ60は、一対の
リング部材61，62を有している。リング部材61，62は、
第２環状部材52の外周面に係合可能な内径寸法を有し、
それぞれの両端面間に所定厚みのシム63を介装した状態
で固定ボルト64，64により相互に固定されている（図６
参照）。固定ボルト64，64は、リング部材61の外周面か
ら接線方向に対して平行に形成された貫通孔65に案内さ
れ、リング部材62の端面に螺合される。このようなシー
ルホルダ60は、単列外輪33の端面に形成された段差部33
Ａにインロー結合可能な凸縁66が形成されているととも
に、厚み寸法が異なる複数種類のシム63，63を選択的に
用いることにより内径寸法を任意に選択でき、これによ
り第２環状部材52に対する締め付け力、換言すれば固定
力を調整できる。そして、このシールホルダ60は、外周
面に沿って設けられた凹部67にＯリング68が嵌装されて
いる。Returning to FIG. 3, the seal holder 60 has a pair of ring members 61 and 62. The ring members 61 and 62
It has an inner diameter dimension that can be engaged with the outer peripheral surface of the second annular member 52,
With a shim 63 having a predetermined thickness interposed between both end surfaces, the shim 63 is fixed to each other by fixing bolts 64, 64 (FIG. 6).
reference). The fixing bolts 64 are guided from the outer peripheral surface of the ring member 61 to a through hole 65 formed in parallel with the tangential direction, and screwed to the end surface of the ring member 62. Such a seal holder 60 includes a stepped portion 33 formed on the end face of the single row outer ring 33.
A is formed with a convex edge 66 that can be spigot-coupled, and the inner diameter can be arbitrarily selected by selectively using a plurality of types of shims 63 having different thickness dimensions. The tightening force, in other words the fixing force, can be adjusted. The seal holder 60 has an O-ring 68 fitted in a concave portion 67 provided along the outer peripheral surface.
【００１９】次に、本発明に係るラビリンスシール50の
組立手順を説明する。図３に示すように、あらかじめ複
列内輪22の小径部24に第１環状部材51を嵌合させてお
き、第２環状部材52を拡径させて（図中鎖線参照）第１
環状部材51の外周面に被せる。そして、第１環状部材51
の鍔部54および第２環状部材52の鍔部59が軸方向に沿っ
て非接触状態で交互に離間配置するように位置決めした
後、第２環状部材52を初期直径に復帰させる。次に、第
２環状部材52の外周面にリング部材61，62を被せるとと
もに、リング部材61，62の端面間に所定厚みのシム63，
63を介装し、固定ボルト64，64を介してリング部材61，
62を相互に固定する。Next, the procedure for assembling the labyrinth seal 50 according to the present invention will be described. As shown in FIG. 3, the first annular member 51 is fitted in the small-diameter portion 24 of the double-row inner ring 22 in advance, and the diameter of the second annular member 52 is increased (see the chain line in the figure).
The outer peripheral surface of the annular member 51 is covered. Then, the first annular member 51
After the flange 54 and the flange 59 of the second annular member 52 are positioned so as to be alternately separated in a non-contact state along the axial direction, the second annular member 52 is returned to the initial diameter. Next, ring members 61 and 62 are put on the outer peripheral surface of the second annular member 52, and a shim 63 having a predetermined thickness is provided between the end surfaces of the ring members 61 and 62.
63, and ring members 61,
Fix 62 to each other.
【００２０】以上のような実施形態によれば、鍔部54，
59が軸方向に沿って非接触状態で交互に離間配置するよ
うに、第１環状部材51および第２環状部材52を相対配置
することによりラビリンスシール50が設けられているた
め、従来に比較して構成部品を少数化できる。また、こ
の実施形態によれば、第２環状部材52が初期直径を弾性
的に維持可能な略Ｃ字状であるため、この環状部材52を
拡径させた状態で第１環状部材51に被せてから初期直径
に復帰させるという極めて簡単作業によりラビリンスシ
ール50を形成でき、従来に比較して組立工程を飛躍的に
簡略化できる。According to the above-described embodiment, the flange 54,
The labyrinth seal 50 is provided by arranging the first annular member 51 and the second annular member 52 in such a manner that the first annular member 51 and the second annular member 52 are alternately spaced apart in a non-contact state along the axial direction. And the number of components can be reduced. Further, according to this embodiment, since the second annular member 52 has a substantially C shape capable of elastically maintaining the initial diameter, the second annular member 52 is placed on the first annular member 51 in a state where the diameter of the annular member 52 is expanded. The labyrinth seal 50 can be formed by an extremely simple operation of returning the diameter to the initial diameter after that, and the assembling process can be drastically simplified as compared with the related art.
【００２１】さらに、この実施形態では、単列外輪33の
端面にインロー結合されたシールホルダ60を介して第２
環状部材52が位置決めされているため、高い負荷が掛か
った状態で円すいころ軸受10が高速回転しても、第２環
状部材52に拡開，縮径等の変形が生じる虞れが少なく、
鍔部54，59が相互に接触することによる摩耗，発熱が生
じ難い。Further, in this embodiment, the second row is formed via the seal holder 60 which is spigot-coupled to the end face of the single row outer ring 33.
Since the annular member 52 is positioned, even when the tapered roller bearing 10 rotates at a high speed under a high load, there is little possibility that the second annular member 52 will be deformed such as expanding or contracting.
Wear and heat generation due to the contact of the flanges 54 and 59 with each other are unlikely to occur.
【００２２】なお、本発明は、前述した実施形態に限定
されるものでなく、適宜な変形，改良等が可能である。
例えば、前述した実施形態では、回転軸に嵌合する内輪
部に支持された第１環状部材と、ハウジングに嵌合する
外輪部に支持された第２環状部材とが例示されていた
が、本発明は回転軸およびハウジングのうちの一方に環
状部材が設けられていればよく、双方に設けておく必要
はない。また、前述した実施形態では、ハウジングに設
けられた環状部材が略Ｃ字状に拡径可能とされていた
が、回転軸に設けられる環状部材を略螺旋状に縮径可能
としておいてもよい。その他、前述した実施形態におい
て例示した転動部材，溝部，フランジ，ラビリンスシー
ル，環状部材，破断部等の材質，形状，寸法，形態，
数，配置個所等は本発明を達成できるものであれば任意
であり、限定されない。It should be noted that the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made.
For example, in the above-described embodiment, the first annular member supported by the inner ring portion fitted to the rotating shaft and the second annular member supported by the outer ring portion fitted to the housing are illustrated. In the present invention, the annular member may be provided on one of the rotating shaft and the housing, and need not be provided on both. Further, in the above-described embodiment, the diameter of the annular member provided on the housing can be increased in a substantially C shape. However, the diameter of the annular member provided on the rotating shaft may be reduced in a substantially spiral shape. . In addition, the materials, shapes, dimensions, forms, and the like of the rolling members, grooves, flanges, labyrinth seals, annular members, break portions, and the like exemplified in the above-described embodiment.
The number, the location, and the like are not limited as long as the present invention can be achieved.
【００２３】[0023]
【発明の効果】以上、説明したように、本発明によれ
ば、例えば環状部材の内周面にフランジが形成され、か
つ、回転軸に溝部が形成されている場合、環状部材を拡
径させた状態で溝部に被せ、次いで環状部材を初期直径
に復帰させれば溝部内にフランジを非接触状態で挿入配
置できるため、ラビリンスシールを形成するにあたっ
て、従来に比較して、構成部品を少数化できるとともに
組立工程を簡略化できることになる。As described above, according to the present invention, when the flange is formed on the inner peripheral surface of the annular member and the groove is formed on the rotating shaft, the diameter of the annular member is increased. If the flange is inserted into the groove in a non-contact state by restoring the annular member to the initial diameter and then returning to the initial diameter, the number of component parts can be reduced compared to the conventional one when forming the labyrinth seal because the flange can be inserted and arranged in a non-contact state And the assembly process can be simplified.
【図１】本発明に係る実施形態を示す断面図である。FIG. 1 is a sectional view showing an embodiment according to the present invention.
【図２】ラビリンスシールを示す要部拡大断面図であ
る。FIG. 2 is an enlarged sectional view of a main part showing a labyrinth seal.
【図３】ラビリンスシールを示す模式分解斜視図であ
る。FIG. 3 is a schematic exploded perspective view showing a labyrinth seal.
【図４】第２環状部材を部分的に破断して示す正面図で
ある。FIG. 4 is a front view showing a second annular member partially broken away.
【図５】第２環状部材の断面図である。FIG. 5 is a sectional view of a second annular member.
【図６】シールリングの構造を示す部分拡大断面図であ
る。FIG. 6 is a partially enlarged sectional view showing the structure of a seal ring.
【図７】従来のラビリンスシールを示す断面図である。FIG. 7 is a sectional view showing a conventional labyrinth seal.
10 円すいころ軸受（転がり軸受） 40 転動部材 50 ラビリンスシール 51 第１環状部材（環状部材） 52 第２環状部材（環状部材） 57Ａ 破断部 54，59 鍔部 10 Tapered roller bearing (rolling bearing) 40 Rolling member 50 Labyrinth seal 51 First annular member (annular member) 52 Second annular member (annular member) 57A Breaking part 54, 59 Flange
Claims (1)
複数の転動部材を有し、前記回転軸および前記ハウジン
グのうちの一方における周方向に沿って設けられた溝部
に対して、前記回転軸および前記ハウジングのうちの他
方における周方向に沿って設けられたフランジが非接触
状態で挿入配置されたラビリンスシールを備えた転がり
軸受のシール構造であって、 前記回転軸および前記ハウジングのうちの一方に支持さ
れる環状部材を有し、前記環状部材の所定位置に破断部
が設けられているとともに、その周面に前記溝部および
前記フランジのうちの一方が形成され、前記環状部材が
初期直径を弾性的に維持可能であることを特徴とする転
がり軸受のシール構造。1. A rotating member having a plurality of rolling members disposed between a rotating shaft and a housing, wherein the rotating shaft is provided in a groove provided along a circumferential direction in one of the rotating shaft and the housing. And a seal structure of a rolling bearing provided with a labyrinth seal in which a flange provided along a circumferential direction on the other of the housings is inserted and arranged in a non-contact state, wherein one of the rotating shaft and the housing is provided. The annular member has a break portion provided at a predetermined position of the annular member, and one of the groove and the flange is formed on a peripheral surface thereof, and the annular member has an initial diameter. A sealing structure for a rolling bearing characterized by being elastically maintainable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10167450A JP2000000606A (en) | 1998-06-15 | 1998-06-15 | Structure of seal for rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10167450A JP2000000606A (en) | 1998-06-15 | 1998-06-15 | Structure of seal for rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000000606A true JP2000000606A (en) | 2000-01-07 |
Family
ID=15849930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10167450A Pending JP2000000606A (en) | 1998-06-15 | 1998-06-15 | Structure of seal for rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000000606A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6738887B2 (en) | 2001-07-17 | 2004-05-18 | International Business Machines Corporation | Method and system for concurrent updating of a microcontroller's program memory |
| JP2006207620A (en) * | 2005-01-25 | 2006-08-10 | Showa Corp | Propeller shaft supporting structure |
| CN111043168A (en) * | 2019-12-16 | 2020-04-21 | 刘超 | Rolling bearing device for underwater operation |
-
1998
- 1998-06-15 JP JP10167450A patent/JP2000000606A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6738887B2 (en) | 2001-07-17 | 2004-05-18 | International Business Machines Corporation | Method and system for concurrent updating of a microcontroller's program memory |
| JP2006207620A (en) * | 2005-01-25 | 2006-08-10 | Showa Corp | Propeller shaft supporting structure |
| CN111043168A (en) * | 2019-12-16 | 2020-04-21 | 刘超 | Rolling bearing device for underwater operation |
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