JPH09105417A - Sealing device for revolving bearing - Google Patents

Sealing device for revolving bearing

Info

Publication number
JPH09105417A
JPH09105417A JP7288148A JP28814895A JPH09105417A JP H09105417 A JPH09105417 A JP H09105417A JP 7288148 A JP7288148 A JP 7288148A JP 28814895 A JP28814895 A JP 28814895A JP H09105417 A JPH09105417 A JP H09105417A
Authority
JP
Japan
Prior art keywords
seal
mounting groove
seal member
holding portion
retainer member
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.)
Granted
Application number
JP7288148A
Other languages
Japanese (ja)
Other versions
JP3629775B2 (en
Inventor
Isato Masuda
勇人 益田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP28814895A priority Critical patent/JP3629775B2/en
Publication of JPH09105417A publication Critical patent/JPH09105417A/en
Application granted granted Critical
Publication of JP3629775B2 publication Critical patent/JP3629775B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
    • 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
    • F16C2350/00—Machines or articles related to building
    • F16C2350/26—Excavators

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

PROBLEM TO BE SOLVED: To reliably fix a seal member in a groove by a method wherein a second lip part crossing a lip part at right angles is arranged at a seal member, a retainer member having an elastic plate formed in a U-shape is nipped in a compression state between holding parts, and a seal member is fitted in a seal mounting groove. SOLUTION: In such a state that the nip part 32 of a retainer member 30 is opened to some extent, an adhesive is applied on the holding part 21 of a seal member 20, which is inserted in the nipping part 32 and by caulking from a vertical direction, a nipping part 32 is formed in a given shape. The holding part 21 is compressed and adhered on the inner surface of the nipping part 32. In such a state that the retainer member 30 is mounted, the seal member 20 is fitted in the seal mounting grooves 16 and 17 of inner and outer rings 7 and 8. The seal member 20 is mounted in such a state that a second lip part 23 is pointed to the revolving bearing side and the peel operating plate part 31 of the retainer member 30 is mounted in such a manner to extend to the opposite side to a revolving bearing. This constitution adheres the retainer member 30 to the inner wall surfaces of seal mounting grooves 16 and 17, and coating with an adhesive is uniformly spread, a powerful adhesion effect is provided, and firm fixing is practicable.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、建設機械等の旋回
輪を有する機械において、この旋回輪を構成する内輪と
外輪との間に介装される旋回軸受をシールするシール装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal device for a slewing wheel such as a construction machine, which seals a slewing bearing interposed between an inner ring and an outer ring of the slewing wheel. .

【０００２】[0002]

【従来の技術】旋回輪を有する機械の代表的なものとし
ては、油圧ショベルその他の建設機械がある。そこで、
図４に油圧ショベルを示す。油圧ショベルは下部走行体
１上に上部旋回体２を装着したものであり、この上部旋
回体２に土砂の掘削等の作業を行うフロント作業機構３
が装着されており、また車両の走行や、このフロント作
業機構３の操作を行うオペレータが搭乗する運転室４が
設けられ、さらにエンジン，油圧ポンプ，方向切換弁
等、各種の機械や機器を設けた機械室５が設置されてい
る。2. Description of the Related Art Hydraulic excavators and other construction machines are typical of machines having slewing wheels. Therefore,
FIG. 4 shows a hydraulic excavator. The hydraulic excavator has an upper swing body 2 mounted on a lower traveling body 1, and a front work mechanism 3 for performing work such as excavation of earth and sand on the upper swing body 2.
Is installed, and a driver's cab 4 in which an operator who runs the vehicle and operates the front working mechanism 3 is boarded is provided, and various machines and devices such as an engine, a hydraulic pump, and a directional control valve are provided. A machine room 5 is installed.

【０００３】上部旋回体２のフレーム２ａは、下部走行
体１のフレーム１ａ上に旋回輪６を介して旋回可能に設
けられている。そこで、図５及び図６に旋回輪６の構成
を示す。旋回輪６は、下部走行体１のフレーム１ａに連
結して設けた内輪７と、上部旋回体２のフレーム２ａに
連結して設けた外輪８とを有し、この内輪７と外輪８と
の間は、旋回軸受９を介して相対回転可能に連結されて
いる。内輪７の内周面にはリングギア１０が設けられて
おり、上部旋回体２側には旋回用油圧モータ１１が設置
されており、この油圧モータ１１の出力軸にはピニオン
１２が連結されて、このピニオン１２がリングギア１０
と噛合している。そして、このピニオン１２とリングギ
ア１０との噛合部を潤滑するために、下部走行体１のフ
レーム１ａには円環状のグリス溜め部１３が設けられて
いる。従って、油圧モータ１１を作動させてピニオン１
２を回転させると、このピニオン１２がリングギア１０
上を転動するから、上部旋回体２に連結した外輪８が内
輪７に対して相対回転することになって、上部旋回体２
の旋回が行われる。The frame 2a of the upper revolving structure 2 is provided on the frame 1a of the lower traveling structure 1 so as to be revolvable via revolving wheels 6. Therefore, the structure of the turning wheel 6 is shown in FIGS. The slewing wheel 6 has an inner ring 7 connected to the frame 1a of the lower traveling structure 1 and an outer ring 8 connected to the frame 2a of the upper revolving structure 2, and the inner ring 7 and the outer ring 8 are connected to each other. The two are connected to each other via a slewing bearing 9 so as to be relatively rotatable. A ring gear 10 is provided on the inner peripheral surface of the inner ring 7, a turning hydraulic motor 11 is installed on the upper swing body 2 side, and a pinion 12 is connected to an output shaft of the hydraulic motor 11. , This pinion 12 is a ring gear 10
Is engaged. An annular grease reservoir 13 is provided on the frame 1a of the lower traveling body 1 in order to lubricate the meshing portion between the pinion 12 and the ring gear 10. Therefore, by operating the hydraulic motor 11, the pinion 1
When the 2 is rotated, this pinion 12 becomes the ring gear 10.
Since it rolls up, the outer ring 8 connected to the upper revolving superstructure 2 rotates relative to the inner ring 7, and thus the upper revolving superstructure 2
Is turned.

【０００４】旋回軸受９は上部旋回体２全体の荷重を旋
回可能に支承するものであるから、この旋回軸受９は十
分に潤滑性を高める必要があり、かつ外部から塵埃等が
入り込まないように保護しなければならない。このため
に、内輪７と外輪８との間にシール部材を介装して、旋
回軸受９の部位をシールして内部にグリス等の潤滑剤を
保持させる構成としている。Since the slewing bearing 9 supports the load of the entire upper slewing body 2 so as to be slewable, the slewing bearing 9 must be sufficiently lubricated, and dust and the like should not enter from the outside. Must be protected. For this reason, a seal member is interposed between the inner ring 7 and the outer ring 8 to seal the portion of the slewing bearing 9 and hold a lubricant such as grease inside.

【０００５】図７に旋回軸受９のシール機構の構成を示
す。１４，１５はシール部材であって、これら各シール
部材１４，１５は、ゴム等の弾性部材からなり、保持部
１４ａ，１５ａと、リップ部１４ｂ，１５ｂとを有する
円環状のものであって、それぞれ保持部１４ａ，１５ａ
が内輪７の外周面７ａ及び外輪８の内周面８ａに設けた
円環状のシール装着溝１６，１７に挿嵌されている。シ
ール部材１４は、その保持部１４ａを外輪８の内周面８
ａ側のシール装着溝１７に挿嵌されて、リップ部１４ｂ
が内輪７の上面７ｂに摺接している。また、シール部材
１５は、その保持部１５ａが内輪７の外周面７ａのシー
ル装着溝１６に挿嵌されて、リップ部１５ｂが外輪８の
下面８ｂに摺接する。これによって、内輪７の外周面７
ａと外輪８の内周面８ａとの間において、旋回軸受９を
含む部位がシール部材１４，１５により密閉された空間
となる。そして、外輪８側には給脂通路１８が設けられ
ており、この給脂通路１８を介して旋回軸受９を潤滑す
るためのグリス等の潤滑剤が供給される。なお、１９は
給脂通路１８に螺挿されるグリス栓である。FIG. 7 shows the structure of the seal mechanism of the slewing bearing 9. Reference numerals 14 and 15 denote seal members, and each of the seal members 14 and 15 is made of an elastic member such as rubber and has an annular shape having holding portions 14a and 15a and lip portions 14b and 15b. Retaining portions 14a and 15a, respectively
Are inserted into annular seal mounting grooves 16 and 17 provided on the outer peripheral surface 7a of the inner ring 7 and the inner peripheral surface 8a of the outer ring 8. The seal member 14 has a holding portion 14 a, the inner peripheral surface 8 of the outer ring 8
It is inserted into the seal mounting groove 17 on the a side, and the lip portion 14b
Is in sliding contact with the upper surface 7b of the inner ring 7. The holding portion 15a of the seal member 15 is inserted into the seal mounting groove 16 of the outer peripheral surface 7a of the inner ring 7, and the lip portion 15b is in sliding contact with the lower surface 8b of the outer ring 8. As a result, the outer peripheral surface 7 of the inner ring 7
Between a and the inner peripheral surface 8a of the outer ring 8, a portion including the slewing bearing 9 is a space sealed by the seal members 14 and 15. A greasing passage 18 is provided on the outer ring 8 side, and a lubricant such as grease for lubricating the slewing bearing 9 is supplied through the greasing passage 18. A grease stopper 19 is screwed into the greasing passage 18.

【０００６】このように、リップ部１４ｂ，１５ｂを備
えたシール部材１４，１５を用いることによって、旋回
軸受９の部分を密閉して、内部に潤滑剤を保持させ、か
つ外部から塵埃等の異物の侵入を防止できる。そして、
この内部の潤滑剤が汚損されると、給脂通路１８を介し
て潤滑剤を補給する。これによって、内部にある汚損さ
れた潤滑剤は、圧力の上昇によりシール部材１４，１５
のリップ部１４ａ，１５ａと内輪７の上面７ｂ，外輪８
の下面８ｂとの間から排出できる。As described above, by using the seal members 14 and 15 provided with the lip portions 14b and 15b, the portion of the slewing bearing 9 is hermetically sealed, the lubricant is retained inside, and foreign matters such as dust from the outside are retained. Can be prevented. And
When the lubricant inside is contaminated, the lubricant is replenished through the greasing passage 18. As a result, the contaminated lubricant inside the seal members 14, 15 is increased by the increase in pressure.
Lip portions 14a, 15a, the upper surface 7b of the inner ring 7, and the outer ring 8
It can be discharged from between the lower surface 8b of the.

【０００７】[0007]

【発明が解決しようとする課題】ここで、シール部材に
おける保持部はシール装着溝から逸脱しないように保持
されていなければならない。このために、保持部の厚み
はシール装着溝の幅より僅かに大きくなるように成形し
ておき、実際に装着する際には、シール装着溝乃至保持
部に接着剤を塗布して、保持部を撓めるようにしてシー
ル装着溝に挿入する。これによって、保持部は、その弾
性復元力によりシール装着溝の内壁面に圧接されること
から、接着剤による接着力が均一に及ぶことになる結
果、このシール部材の保持部はシール装着溝に安定的に
保持され、みだりに逸脱するおそれはない。The holding portion of the seal member must be held so as not to deviate from the seal mounting groove. Therefore, the thickness of the holding portion is formed to be slightly larger than the width of the seal mounting groove, and when actually mounting, the adhesive is applied to the seal mounting groove or the holding portion, Insert it into the seal mounting groove so that it bends. As a result, the holding portion is pressed against the inner wall surface of the seal mounting groove due to its elastic restoring force, so that the adhesive force by the adhesive is evenly distributed. It is kept stable and there is no danger of deviations.

【０００８】ところで、シール部材は、その保持部及び
リップ部は押し出し成形等により形成され、この成形品
を円環状となるように癖付けするために螺旋状に巻回
し、この状態で加硫した後に、所定の寸法となるように
切断することにより製造される。旋回輪はその直径が３
ｍにも及ぶものがあり、従ってシール部材の全長は１０
ｍ以上となってしまう。このようなシール部材は、成形
時には寸法管理を厳格に行えるが、加硫時には加硫温度
にばらつきが生じ、かつ全体を均一な熱に曝すことがで
きない等により必ずしも全体を均一に加硫できない場合
がある。このために、シール部材の寸法管理は厳格に行
えない。By the way, in the seal member, the holding portion and the lip portion are formed by extrusion molding or the like, and this molded product is spirally wound in order to form an annular shape and vulcanized in this state. After that, it is manufactured by cutting into a predetermined size. The slewing wheel has a diameter of 3
Since there are as many as m, the total length of the sealing member is 10
It will be over m. When such a seal member can be strict dimensional control at the time of molding, the vulcanization temperature varies during vulcanization, and the whole cannot be uniformly vulcanized because it cannot be exposed to uniform heat. There is. Therefore, dimensional control of the seal member cannot be strictly performed.

【０００９】以上のように、シール部材の寸法管理は困
難であることから、シール装着溝に挿嵌される保持部の
厚みもある程度のばらつきが生じるのを防止できない。
この保持部が定格寸法より厚い場合には、シール装着溝
に挿嵌するのが困難になり、また定格寸法より厚みが小
さい場合には、シール装着溝の内壁面との間に隙間が生
じ、接着剤を用いてもシール部材の保持を確実に行えな
くなり、甚だしい場合には保持部がシール装着溝から脱
落する等といった問題点がある。As described above, since it is difficult to control the size of the seal member, it is impossible to prevent the thickness of the holding portion inserted into the seal mounting groove from varying to some extent.
If this holding portion is thicker than the rated dimension, it becomes difficult to insert it into the seal mounting groove, and if the thickness is smaller than the rated dimension, a gap occurs between the inner wall surface of the seal mounting groove, Even if an adhesive is used, the seal member cannot be reliably held, and in extreme cases, there is a problem that the holding portion falls off from the seal mounting groove.

【００１０】シール部材の脱落防止を図るために、従来
から種々の工夫がなされている。例えば、シール部材を
シール装着溝に挿入した状態でワイヤ等の締め付け部材
で締め付けるように構成したものがあるが、内輪側にシ
ール装着溝が設けられる場合には、締め付け具で締め付
け力を作用させることはできるが、外輪側ではその内周
面にシール装着溝が設けられる関係から、このような構
成を採用できない。また、シール部材におけるシール装
着溝に挿嵌される保持部に、それと直交する方向に突起
部を設けて、この突起部を内輪や外輪の壁面に圧接させ
るように構成したものもある。一般に、シール部材を内
輪，外輪といった金属とを接着するには、ある程度の押
し付け力を作用させることが必要となり、押し付け力が
得られない部位では、あまり接着効果が期待できない。
従って、突起を壁面に押し付けるには、シール部材が拡
開する方向に付勢した状態で装着しなければならず、こ
のためにシール部材の寸法のばらつき等と相まってシー
ル部材の装着を行う作業の作業性が極めて悪い等といっ
た問題点がある。Various measures have heretofore been made to prevent the seal member from falling off. For example, there is a structure in which the sealing member is inserted into the seal mounting groove and tightened by a tightening member such as a wire. However, when the seal mounting groove is provided on the inner ring side, the tightening force is applied by the tightening tool. However, such a structure cannot be adopted because the seal mounting groove is provided on the inner peripheral surface of the outer ring side. Further, there is also a structure in which a protrusion is provided in a direction orthogonal to the holding portion inserted into the seal mounting groove of the seal member, and the protrusion is pressed against the wall surfaces of the inner ring and the outer ring. In general, in order to bond the seal member to a metal such as an inner ring and an outer ring, it is necessary to apply a pressing force to some extent, and a bonding effect cannot be expected so much in a region where the pressing force cannot be obtained.
Therefore, in order to press the projection against the wall surface, it is necessary to mount the seal member in a state in which the seal member is urged in the expanding direction. There are problems such as extremely poor workability.

【００１１】本発明は以上の点に鑑みてなされたもので
あって、その目的とするところは、シール部材の保持部
に厚み寸法が多少ばらついていても、このシール部材を
内輪及び外輪のシール装着溝内に確実に固定できるよう
にすることにある。The present invention has been made in view of the above points, and it is an object of the present invention to seal a seal member between an inner ring and an outer ring even if the thickness of the holding portion of the seal member varies. It is to be able to securely fix it in the mounting groove.

【００１２】[0012]

【課題を解決するための手段】以上の目的を達成するた
めに、本発明は、旋回輪を構成する内輪と外輪とのう
ち、少なくとも一方側の部材にシール装着溝を形成し、
このシール装着溝には、環状のシール部材を構成する保
持部を挿嵌させて、相手方の部材にこの保持部から延在
させたリップ部を摺接させることにより、内輪と外輪と
の間の軸受部をシールするようにしたものであって、前
記シール部材には、前記リップ部と略直交する方向に延
在させた第２のリップ部を設け、また前記保持部には、
その円周方向に複数個所において、弾性板体を略コ字状
に形成したリテーナ部材を保持部に所定量だけ圧縮させ
るように挾持させて、前記シール装着溝に、このシール
装着溝が形成されている側の部材の表面に前記第２のリ
ップ部が当接する状態に挿嵌させる構成としたことをそ
の特徴とするものである。In order to achieve the above object, the present invention has a seal mounting groove formed in at least one of the inner ring and the outer ring forming the turning wheel,
A retaining portion that constitutes an annular seal member is inserted into the seal mounting groove, and a lip portion extended from the retaining portion is slidably contacted with a counterpart member, so that a gap between the inner ring and the outer ring is formed. A bearing portion is sealed, the seal member is provided with a second lip portion extending in a direction substantially orthogonal to the lip portion, and the holding portion is
At a plurality of positions in the circumferential direction, a retainer member having a substantially U-shaped elastic plate is held by the holding portion so as to be compressed by a predetermined amount, and the seal mounting groove is formed in the seal mounting groove. It is characterized in that the second lip portion is inserted into the surface of the member on the side where the second lip portion is in contact.

【００１３】[0013]

【発明の実施の形態】シール部材を内輪や外輪のシール
装着溝に装着するに当っては、このシール部材の幅寸法
とシール装着溝の幅寸法とをいかに正確に管理するかが
重要である。シール装着溝は機械加工で形成されること
から、その寸法は厳格に管理できる。これに対して、シ
ール部材は、既に説明したようにして成形後に加硫する
ことにより製造されることから、その保持部の厚みを正
確には管理できない。BEST MODE FOR CARRYING OUT THE INVENTION When mounting a seal member in a seal mounting groove of an inner ring or an outer ring, it is important to accurately control the width dimension of this seal member and the width dimension of the seal mounting groove. . Since the seal mounting groove is formed by machining, its dimensions can be strictly controlled. On the other hand, since the seal member is manufactured by vulcanizing after molding as described above, the thickness of the holding portion cannot be accurately controlled.

【００１４】そこで、この保持部に正確な厚みを持たせ
るために、厚み補正を行う。このために、例えば鋼板等
の弾性を有する板体を曲成したリテーナ部材を用いる。
このリテーナ部材は断面が略コ字状となるように形成す
る。そして、リテーナ部材にシール部材の保持部を挟み
込ませて、かしめ等の手段で所定の形状となるように成
形する。これによって、保持部は圧縮された状態とな
り、その厚みを一定にすることができる。Therefore, in order to give the holding portion an accurate thickness, thickness correction is performed. For this purpose, a retainer member formed by bending an elastic plate body such as a steel plate is used.
The retainer member is formed so that its cross section has a substantially U shape. Then, the retaining portion of the seal member is sandwiched by the retainer member, and the retainer member is molded into a predetermined shape by means such as caulking. As a result, the holding portion is in a compressed state and its thickness can be made constant.

【００１５】リテーナ部材はシール部材の全周にわたっ
て装着できないから、シール部材の円周方向に所定の間
隔をもって複数個装着する。各リテーナ部材の円周方向
の長さ及びシール部材に装着される数は、シール部材及
びリテーナ部材の材質や、旋回輪の形状等に応じて適宜
設定する。円周方向の長さが長いリテーナ部材を用いれ
ば、個数が少なくて良く、また保持部をより確実に固定
できる。ただし、リテーナ部材の円周方向における長さ
が長いと、それを円弧状に形成する必要があり、そのシ
ール部材の保持部を挾持させるために、均一な圧縮力を
加えるのが困難になる。一方、円周方向の長さが短いリ
テーナ部材を用いる場合には、相当数のリテーナ部材を
装着しなければ、十分に固定できなくなるが、直線的な
もので形成することも可能になり、またかしめ等の手段
により容易にシール部材の保持部を圧縮させた状態に挾
持させることができる。また、リテーナ部材を直線的に
形成すると、大きさの異なる旋回輪のシール部材にも用
いることができ、部品の共用化が図られる。Since the retainer member cannot be mounted over the entire circumference of the seal member, a plurality of retainer members are mounted at predetermined intervals in the circumferential direction of the seal member. The circumferential length of each retainer member and the number of the retainer members to be mounted on the seal member are appropriately set depending on the materials of the seal member and the retainer member, the shape of the slewing wheel, and the like. If a retainer member having a long circumferential length is used, the number of the retainer members may be small, and the holding portion can be more reliably fixed. However, if the length of the retainer member in the circumferential direction is long, it is necessary to form it in an arc shape, and it becomes difficult to apply a uniform compressive force in order to hold the holding portion of the seal member. On the other hand, when a retainer member having a short circumferential length is used, it cannot be sufficiently fixed unless a considerable number of retainer members are mounted, but it is also possible to form a linear member. The holding portion of the seal member can be easily held in a compressed state by means of caulking or the like. Further, if the retainer member is formed linearly, it can be used also as a seal member for slewing wheels of different sizes, and the parts can be shared.

【００１６】リテーナ部材を装着した状態で、シール部
材の保持部をシール装着溝に挿入するが、保持部はリテ
ーナ部材により圧縮されており、かつリテーナ部材は保
持部の全周に及ぶものではないことから、リテーナ部材
により挾持された部位から保持部が露出している部位へ
の移行部には隙間が生じることになり、シール部材によ
るシール機能が損なわれる。そこで、シール部材には、
その保持部とリップ部との間の部位に、保持部と直交す
る方向に第２のリップ部を延在させておく。この第２の
リップ部をシール装着溝が形成されている側の部材の壁
面に密着させることによって、リップ部から保持部への
移行部の隙間の部分がこの第２のリップ部によりシール
されることになる。The holding portion of the seal member is inserted into the seal mounting groove with the retainer member attached, but the holding portion is compressed by the retainer member, and the retainer member does not extend over the entire circumference of the holding portion. Therefore, a gap is created at the transition portion from the portion held by the retainer member to the portion where the holding portion is exposed, and the sealing function of the sealing member is impaired. Therefore, in the seal member,
A second lip portion is extended in a direction between the holding portion and the lip portion in a direction orthogonal to the holding portion. By bringing the second lip portion into close contact with the wall surface of the member on the side where the seal mounting groove is formed, the gap portion of the transition portion from the lip portion to the holding portion is sealed by the second lip portion. It will be.

【００１７】リテーナ部材を装着したシール部材を旋回
輪を構成する内輪及び外輪に設けたシール装着溝に挿嵌
することにより旋回輪に装着される。そして、装着状態
で安定させ、作動中等においてみだりにシール装着溝か
ら脱落したり、ずれたりして不安定な状態にならないよ
うにする必要がある。リテーナ部材は保持部を圧縮され
ているから、この圧縮度合いによりリテーナ部材が保持
部からの逸脱を防止できる。また、リテーナ部材をシー
ル装着溝に圧入させるようにすれば、リテーナ部材がシ
ール装着溝から逸脱することはない。ここで、シール部
材における保持部は、リテーナ部材を装着した部位では
均一な厚みを有しているから、シール装着溝への圧入に
より、確実に固定できることになる。The seal member, to which the retainer member is attached, is attached to the slewing wheel by inserting the seal member into the seal attachment grooves provided in the inner ring and the outer ring forming the slewing wheel. Then, it is necessary to stabilize it in the mounted state so that it does not become unstable due to dropping or shifting from the seal mounting groove unintentionally during operation. Since the retainer member has its holding portion compressed, the degree of compression can prevent the retainer member from deviating from the holding portion. Further, if the retainer member is press-fitted into the seal mounting groove, the retainer member does not deviate from the seal mounting groove. Here, since the holding portion of the seal member has a uniform thickness at the portion where the retainer member is mounted, it can be securely fixed by press fitting into the seal mounting groove.

【００１８】シール部材をより確実に固定するには、リ
テーナ部材と保持部との間に接着剤を介装させる。保持
部は圧縮された状態になっているから、この保持部の弾
性復元力によって、リテーナ部材に圧接されるから、接
着剤が薄く引き伸ばされた状態になって、両部材を強力
に接着させることができる。また、リテーナ部材とシー
ル装着溝の内面との間にも接着剤を介在させる。ここ
で、リテーナ部材は内輪，外輪と同じ金属材で形成でき
るから、ゴムと金属等のように異質の材質を固着する場
合と比較して、接着効果がより良好となる。しかも、リ
テーナ部材を装着した部位の厚みは正確に一定化されて
いるから、シール装着溝に挿嵌させた時に、たとえ圧入
状態に装着しなくとも、このリテーナ部材とシール装着
溝の内壁との間の隙間管理を極めて正確に行える。この
ように隙間が正確に管理できると、接着剤を薄く引き伸
ばした状態とすることができて、その間に最大限に接着
力を発揮できる結果、シール部材は強固にシール装着溝
に装着された状態に保持でき、みだりにそれから逸脱し
たり、ずれたりする等の不都合を生じない。In order to more securely fix the seal member, an adhesive is interposed between the retainer member and the holding portion. Since the holding part is in a compressed state, it is pressed against the retainer member by the elastic restoring force of the holding part, so that the adhesive is thinly stretched and both members are strongly bonded. You can Further, an adhesive is also interposed between the retainer member and the inner surface of the seal mounting groove. Here, since the retainer member can be formed of the same metal material as the inner ring and the outer ring, the adhesive effect is better than in the case where different materials such as rubber and metal are fixed. Moreover, since the thickness of the portion where the retainer member is mounted is accurately made constant, when the retainer member and the inner wall of the seal mounting groove are inserted into the seal mounting groove, even if the retainer member is not press-fitted. The gap between them can be managed extremely accurately. If the gap can be managed accurately in this way, the adhesive can be stretched thinly and the maximum adhesive force can be exerted between them, resulting in the seal member being firmly mounted in the seal mounting groove. It can be held at, and it does not cause inconveniences such as deviation or deviation from it.

【００１９】長い間作動させると、シール部材のリップ
部が摩耗したり、損傷が発生したり、さらには劣化する
等のおそれがあるために、このシール部材を交換する必
要がある。また、旋回軸受の汚れをクリーニングした
り、補修したりする等のメンテナンスも必要になる。こ
のために、シール部材をシール装着溝から取り外さなけ
ればならない。そこで、リテーナ部材に剥離操作板部を
一体に設けて、この剥離操作板部を第２のリップ部の延
在方向とは反対方向に延在させるように連設すると、シ
ール部材をシール装着溝から脱着する際に、この剥離操
作板部を内側に変位させることにより、保持部を容易に
シール装着溝から脱着させることができる。そして、こ
の剥離操作板部を引っ張りながら、保持部をシール装着
溝から引き出すようにすれば、シール部材が破損してシ
ール装着溝内に残存する等の不都合を生じることなく、
円滑かつ迅速にシール部材を脱着させることができる。If operated for a long time, the lip portion of the seal member may be worn, damaged, or deteriorated. Therefore, it is necessary to replace the seal member. Further, maintenance such as cleaning and repairing dirt on the slewing bearing is also required. For this purpose, the sealing member must be removed from the seal mounting groove. Therefore, when the peeling operation plate portion is integrally provided on the retainer member and the peeling operation plate portion is continuously arranged so as to extend in the direction opposite to the extending direction of the second lip portion, the seal member is provided with the seal mounting groove. By displacing the peeling operation plate portion inward when detaching from the holder, the holding portion can be easily detached from the seal mounting groove. Then, while pulling the peeling operation plate portion, if the holding portion is pulled out from the seal mounting groove, there is no inconvenience such as the seal member being damaged and remaining in the seal mounting groove.
The seal member can be smoothly and quickly attached and detached.

【００２０】[0020]

【実施例】以下、図１乃至図３に基づいて本発明の実施
例を説明する。本実施例において、前述した従来技術の
構成部材と同一または均等な部材については、同一の符
号を付して、その説明を省略する。Embodiments of the present invention will be described below with reference to FIGS. In the present embodiment, the same or equivalent members as those of the above-described conventional technology are designated by the same reference numerals, and the description thereof will be omitted.

【００２１】図１及び図２において、２０はシール部
材、３０はリテーナ部材である。シール部材２０は、保
持部２１にリップ部２２を連設したものである点につい
ては、従来技術のものと格別の差はない。また、このシ
ール部材２０は外輪８の内周面８ａに設けたシール装着
溝１７に保持部２１が挿嵌されて、リップ部２２が内輪
７の上面７ｂと摺接し、また内輪７の外周面７ａのシー
ル装着溝１６に保持部２１が挿嵌されて、リップ部２２
が外輪８の下面８ｂに摺接する状態に組み込まれるもの
で、この点においても、従来技術のものと同様である。In FIGS. 1 and 2, 20 is a seal member and 30 is a retainer member. The seal member 20 is the same as the prior art in that the lip portion 22 is connected to the holding portion 21 in series. Further, in this seal member 20, the holding portion 21 is inserted into the seal mounting groove 17 provided on the inner peripheral surface 8a of the outer ring 8 so that the lip portion 22 makes sliding contact with the upper surface 7b of the inner ring 7 and the outer peripheral surface of the inner ring 7. The holding portion 21 is inserted into the seal mounting groove 16 of 7a, and the lip portion 22
Is incorporated in a state of slidingly contacting the lower surface 8b of the outer ring 8, and this point is also similar to that of the prior art.

【００２２】シール部材２０は内輪７及び外輪８の全周
にわたって装着されるものであり、従ってこのシール部
材２０は円環状となる。ただし、シール部材２０は円環
状となるように癖付けされているが、完全な円環状のも
のではなく、１箇所に切れ目の入ったものである。この
シール部材２０は、その保持部２１が内輪７，外輪８の
シール装着溝１６，１７に挿嵌されるが、保持部２１は
全周にわたって直接シール溝１６，１７に挿嵌されるの
ではなく、円周方向の所定角度毎にリテーナ部材３０に
挾持された状態で取り付けられるようになっている。The seal member 20 is mounted over the entire circumference of the inner ring 7 and the outer ring 8, and therefore the seal member 20 has an annular shape. However, although the sealing member 20 is formed to have an annular shape, it is not a perfect annular shape but has a cut at one place. The holding portion 21 of the seal member 20 is inserted into the seal mounting grooves 16 and 17 of the inner ring 7 and the outer ring 8, but the holding portion 21 is not directly inserted into the seal grooves 16 and 17 over the entire circumference. Instead, it is attached to the retainer member 30 while being held by the retainer member 30 at every predetermined angle in the circumferential direction.

【００２３】リテーナ部材３０は鋼板等の弾性板体から
なり、平坦な剥離操作板部３１と略コ字状に曲折させた
挾持部３２とから構成される。挾持部３２は上下に設け
た挾持部片３２ａ，３２ｂと、これら挾持部片３２ａ，
３２ｂ間の連設部３２ｃとからなり、挾持部片３２ａに
は剥離操作板部３１が連設されている。挾持部片３２
ａ，３２ｂの内面間の間隔Ｄ1 は、シール部材２０の保
持部２１における自然状態の厚み寸法Ｔより小さく、ま
た外面間の間隔Ｄ2 はシール装着溝１６，１７の溝幅よ
り僅かに大きくなっている。The retainer member 30 is made of an elastic plate such as a steel plate, and is composed of a flat peeling operation plate portion 31 and a holding portion 32 bent in a substantially U shape. The holding part 32 includes the holding part pieces 32a and 32b provided on the upper and lower sides, and the holding part pieces 32a and 32b.
The peeling operation plate portion 31 is continuously provided on the sandwiching piece 32a. Holding part 32
The distance D 1 between the inner surfaces of a and 32b is smaller than the thickness T of the holding portion 21 of the seal member 20 in the natural state, and the distance D 2 between the outer surfaces is slightly larger than the groove width of the seal mounting grooves 16 and 17. Has become.

【００２４】リテーナ部材３０の挾持部３２は、シール
部材２０の保持部２１を圧縮した状態で挾持されるよう
になっており、シール部材２０には、その保持部２１か
らリップ部２２への移行部に、リテーナ部材３０の剥離
操作板部３１の延設側とは反対方向に向けて第２のリッ
プ部２３が連設されている。この第２のリップ部２３
は、保持部２１に向く側は直線部２３ａで、リップ部２
２側は曲面部２３ｂとなっている。そして、第２のリッ
プ部２３は、シール部材２０におけるシール装着溝１
６，１７への装着部側の壁面に当接するようになってい
る。The holding part 32 of the retainer member 30 is designed to be held while the holding part 21 of the seal member 20 is compressed, and the holding part 21 of the seal member 20 moves from the holding part 21 to the lip part 22. The second lip portion 23 is continuously provided in the portion in a direction opposite to the extension side of the peeling operation plate portion 31 of the retainer member 30. This second lip portion 23
Is a straight part 23a on the side facing the holding part 21, and the lip part 2
The second side has a curved surface portion 23b. Then, the second lip portion 23 corresponds to the seal mounting groove 1 in the seal member 20.
It is adapted to come into contact with the wall surface on the side of the mounting portion for 6, and 17.

【００２５】本実施例は以上のように構成されるもので
あって、シール部材２０を内輪７及び外輪８に装着する
には、まずリテーナ部材３０をシール部材２０に連結す
る。このためには、リテーナ部材３０は、図３に示した
ように、挾持部３２をある程度開いた状態で、シール部
材２０の保持部２１に接着剤を塗布して、挾持部３２と
なる挾持部片３２ａ，３２ｂとなる部位の間に挿入す
る。この状態で、上下方向からかしめることによって、
所定の形状の挾持部３２が形成される。このかしめ状態
においては、挾持部片３２ａ，３２ｂによって保持部２
１は圧縮されることになり、従って保持部２１は挾持部
３２の内面に密着することになるから、その間に接着剤
は薄く、しかも均一に塗り広められるようになり、従っ
て保持部２１と挾持部３２との間には強力な接着力が発
揮されることになり、リテーナ部材３０は確実にシール
部材２０に固着される。The present embodiment is constructed as described above. To mount the seal member 20 on the inner ring 7 and the outer ring 8, first, the retainer member 30 is connected to the seal member 20. For this purpose, as shown in FIG. 3, the retainer member 30 applies the adhesive to the holding portion 21 of the seal member 20 with the holding portion 32 opened to some extent, and becomes the holding portion 32. It inserts between the parts used as pieces 32a and 32b. In this state, by caulking from the top and bottom,
The holding portion 32 having a predetermined shape is formed. In this caulked state, the holding portion 2 is held by the holding portion pieces 32a and 32b.
1 is compressed, so that the holding portion 21 comes into close contact with the inner surface of the holding portion 32, so that the adhesive is thin and evenly spread between the holding portion 21 and the holding portion 21. A strong adhesive force is exerted between the retainer member 30 and the portion 32, and the retainer member 30 is securely fixed to the seal member 20.

【００２６】このように、リテーナ部材３０を装着した
状態で、シール部材２０を内輪７及び外輪８のシール装
着溝１６，１７に挿嵌するようにして装着される。この
シール部材２０は、第２のリップ部２３が旋回軸受９側
に向き、リテーナ部材３０の剥離操作板部３１を旋回軸
受９とは反対側に延在するようにして装着する。シール
部材２０の保持部２１の厚みは、シール装着溝１６，１
７の溝幅寸法Ｂより僅かに大きくしておく方が好まし
い。ただし、シール部材２０の製造時における加硫工程
等により保持部２１の厚みを均一にできない場合がある
が、リテーナ部材３０により挾持されている部位は、シ
ール装着溝１６，１７の溝幅寸法Ｂより僅かに大きい幅
Ｄ2 となるように厚み管理が正確に行われており、この
リテーナ部材３０の外面に接着剤を塗布した状態で、所
定の押し込み力で挿入する。ここで、シール部材２０の
安定性からは、リテーナ部材３０をできるだけ圧入状態
にしてシール装着溝１６，１７に挿嵌させるのが好まし
い。ただし、圧入を行うには、かなり強力な力でシール
装着溝１６，１７に押し込まなければならず、このため
にシール部材２０のリップ部２２を変形させる等といっ
た問題が生じるから、ある程度の押し込み力を作用させ
る必要があるが、接着剤を用いる場合には、必ずしも圧
入状態にする必要はない。In this way, with the retainer member 30 mounted, the seal member 20 is mounted by being inserted into the seal mounting grooves 16 and 17 of the inner ring 7 and the outer ring 8. The seal member 20 is mounted so that the second lip portion 23 faces the swivel bearing 9 side and the peeling operation plate portion 31 of the retainer member 30 extends on the side opposite to the swivel bearing 9. The thickness of the holding portion 21 of the seal member 20 is determined by the seal mounting grooves 16, 1
It is preferable to make it slightly larger than the groove width dimension B of No. 7. However, although the thickness of the holding portion 21 may not be uniform due to a vulcanization process or the like at the time of manufacturing the seal member 20, the portion held by the retainer member 30 is the groove width dimension B of the seal mounting grooves 16 and 17. The thickness is accurately controlled so that the width D 2 is slightly larger, and the retainer member 30 is inserted with a predetermined pushing force in a state where the adhesive is applied to the outer surface thereof. Here, in view of the stability of the seal member 20, it is preferable to insert the retainer member 30 into the seal mounting grooves 16 and 17 in a press-fitted state as much as possible. However, in order to perform the press-fitting, it is necessary to push into the seal mounting grooves 16 and 17 with a considerably strong force, which causes a problem such as deforming the lip portion 22 of the seal member 20. However, when using an adhesive, it is not always necessary to press-fit.

【００２７】これによって、リテーナ部材３０がシール
装着溝１６，１７の内壁面とほぼ密着する状態になっ
て、接着剤が均一に塗り広められた状態になり、またリ
テーナ部材３０とシール装着溝１６，１７の内壁面との
間は金属同士の接着であるから、強力な接着効果が発揮
され、強固に固定した状態に保持されて、シール装着溝
１６，１７から逸脱するおそれはない。シール部材２０
におけるリテーナ部材３０が装着されていない部位は、
その保持部２１を圧縮するようにして、シール装着溝１
６，１７内に挿入する。そして、この保持部２１が露出
している部位にも接着剤を塗布しておくことにより、こ
の部位もシール装着溝１６，１７に接着される。ただ
し、保持部２１自体は厚み寸法にばらつきが生じている
こともあり、従って十分な接着力が及ばない可能性もあ
るが、リテーナ部材３０が装着されている部位が強力に
接着しているから、シール部材２０がシール装着溝１
６，１７から逸脱してしまう等の不都合を生じることは
ない。As a result, the retainer member 30 comes into close contact with the inner wall surfaces of the seal mounting grooves 16 and 17, and the adhesive is evenly spread, and the retainer member 30 and the seal mounting groove 16 are provided. Since the metal is adhered to the inner wall surfaces of the seals 17 and 17, a strong adhesive effect is exerted, and there is no risk of the seals 16 and 17 being held in a firmly fixed state. Seal member 20
In the area where the retainer member 30 is not attached,
As the holding portion 21 is compressed, the seal mounting groove 1
Insert into 6 and 17. Then, by applying an adhesive to the exposed portion of the holding portion 21, this portion is also adhered to the seal mounting grooves 16 and 17. However, since the holding portion 21 itself may have variations in thickness dimension, and therefore, sufficient adhesive force may not be exerted, but the portion to which the retainer member 30 is attached strongly adheres. , The seal member 20 is the seal mounting groove 1
There is no inconvenience such as deviation from Nos. 6 and 17.

【００２８】ここで、シール部材２０に対して、円周方
向に所定の角度毎にリテーナ部材３０を装着している関
係から、リテーナ部材３０が装着されている部位と保持
部２１が直接シール装着溝１６，１７に当接している部
位との移行部には多少の隙間が生じることになる。しか
しながら、シール部材２０には第２のリップ部２３が設
けられているので、このシール部材２０をシール装着溝
１６，１７内に、この第２のリップ部２３の直線部２３
ａがそれぞれ内輪７の外周面７ａ及び外輪８の内周面８
ａと当接する位置まで挿入することによって、シール装
着溝１６，１７のエッジ部分が第２のリップ部２３に覆
われることになる。これによって、内輪７と外輪８との
間に設けた旋回軸受９の部位は上下に設けたシール部材
２０で完全に密閉された状態に保持される。Here, since the retainer member 30 is attached to the seal member 20 at a predetermined angle in the circumferential direction, the portion where the retainer member 30 is attached and the holding portion 21 are directly attached by seal. A slight gap will be formed at the transition portion between the groove 16 and the portion in contact with the groove 17. However, since the seal member 20 is provided with the second lip portion 23, the seal member 20 is placed in the seal mounting grooves 16 and 17, and the straight portion 23 of the second lip portion 23 is provided.
a is the outer peripheral surface 7a of the inner ring 7 and the inner peripheral surface 8 of the outer ring 8
The edge portions of the seal mounting grooves 16 and 17 are covered with the second lip portion 23 by being inserted up to the position where the seal mounting groove 16 and 17 abut. As a result, the portion of the slewing bearing 9 provided between the inner ring 7 and the outer ring 8 is kept completely sealed by the seal members 20 provided above and below.

【００２９】ところで、シール部材２０を一度装着した
後においては、シール部材２０のリップ部２２が常に摺
動することから、このリップ部２２が摩耗すると、シー
ル部材２０を交換しなければならない。また、旋回軸受
９に汚れが生じる等によって、この旋回軸受９の交換や
クリーニング等のメンテナンスも必要となる。この場合
には、シール部材２０をシール装着溝１６，１７から取
り出す必要があるが、リテーナ部材３０には剥離操作板
部３１が連設されており、この剥離操作板部３１は内輪
７の外周面７ａ及び外輪８の内周面８ａに沿って、旋回
軸受９を設けた部位とは反対方向に向けて延在されてい
る。従って、外部から剥離操作板部３１と内輪７の外周
面７ａ及び外輪８の内周面８ａとの間に治具を挿入し
て、リテーナ部材３０とシール装着溝１６，１７との間
の接着剤を剥離させることにより、シール部材２０を破
損させることなく、容易にシール装着溝１６，１７から
取り外すことができる。By the way, since the lip portion 22 of the seal member 20 always slides after the seal member 20 is once mounted, if the lip portion 22 wears, the seal member 20 must be replaced. Further, if the swivel bearing 9 becomes dirty, maintenance such as replacement or cleaning of the swivel bearing 9 is required. In this case, the seal member 20 needs to be taken out from the seal mounting grooves 16 and 17, but the retainer member 30 is continuously provided with the peeling operation plate portion 31, and the peeling operation plate portion 31 is the outer periphery of the inner ring 7. Along the surface 7a and the inner peripheral surface 8a of the outer ring 8, it extends in the direction opposite to the portion where the slewing bearing 9 is provided. Therefore, a jig is inserted from the outside between the peeling operation plate portion 31 and the outer peripheral surface 7a of the inner ring 7 and the inner peripheral surface 8a of the outer ring 8 to bond the retainer member 30 to the seal mounting grooves 16 and 17. By peeling off the agent, the seal member 20 can be easily removed from the seal mounting grooves 16 and 17 without damaging the seal member 20.

【００３０】[0030]

【発明の効果】以上説明したように、本発明は、シール
部材のリップ部と略直交する方向に第２のリップ部を延
在させて設け、また保持部には、その円周方向に複数個
所において、弾性板体を略コ字状に形成したリテーナ部
材を保持部に所定量だけ圧縮させるように挾持させて、
シール装着溝に、このシール装着溝が形成されている側
の部材の表面に第２のリップ部が当接する状態に挿嵌さ
せる構成としたので、軸受部を完全にシールすることが
でき、かつシール部材の保持部の厚み寸法に多少のばら
つきがあっても、内輪及び外輪に設けたシール装着溝に
確実に固定できる等の効果を奏する。As described above, according to the present invention, the second lip portion is provided so as to extend in a direction substantially orthogonal to the lip portion of the seal member, and the holding portion has a plurality of circumferentially extending portions. At a location, the retainer member having the elastic plate body formed in a substantially U shape is held by the holding portion so as to be compressed by a predetermined amount,
Since the seal mounting groove is configured to be fitted in such a state that the second lip portion is in contact with the surface of the member on the side where the seal mounting groove is formed, the bearing portion can be completely sealed, and Even if there is some variation in the thickness dimension of the holding portion of the seal member, it is possible to reliably fix the seal member in the seal mounting groove provided in the inner ring and the outer ring.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の一実施例を示す旋回輪の旋回軸受のシ
ール装置の断面図である。FIG. 1 is a cross-sectional view of a slewing bearing seal device for a slewing wheel according to an embodiment of the present invention.

【図２】シール部材へのリテーナ部材の装着部の構成説
明図である。FIG. 2 is a configuration explanatory view of a mounting portion of a retainer member to a seal member.

【図３】リテーナ部材のシール部材への装着前の状態を
示す構成説明図である。FIG. 3 is a structural explanatory view showing a state before the retainer member is attached to the seal member.

【図４】旋回軸受が装着される機械の一例としての油圧
ショベルの外観図である。FIG. 4 is an external view of a hydraulic excavator as an example of a machine equipped with a slewing bearing.

【図５】油圧ショベルの旋回機構の構成を示す断面図で
ある。FIG. 5 is a cross-sectional view showing a configuration of a turning mechanism of the hydraulic excavator.

【図６】図５の要部拡大断面図である。FIG. 6 is an enlarged sectional view of a main part of FIG. 5;

【図７】従来技術における旋回軸受のシール装置の構成
説明図である。FIG. 7 is a structural explanatory view of a slewing bearing seal device according to a conventional technique.

【符号の説明】[Explanation of symbols]

１ 下部走行体 ２ 上部旋回体 ６ 旋回輪 ７ 内輪 ８ 外輪 ９ 旋回軸受 １６，１７ シール装着溝 ２０ シール部材 ２１ 保持部 ２２ リップ部 ２３ 第２のリップ部 ３０ リテーナ部材 ３１ 剥離操作板部 ３２ 挾持部 1 Lower Traveling Body 2 Upper Revolving Body 6 Slewing Wheel 7 Inner Ring 8 Outer Ring 9 Slewing Bearing 16, 17 Seal Mounting Groove 20 Seal Member 21 Holding Part 22 Lip Part 23 Second Lip Part 30 Retainer Member 31 Peeling Operation Plate Part 32 Holding Part

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 旋回輪を構成する内輪と外輪とのうち、
少なくとも一方側の部材にシール装着溝を形成し、この
シール装着溝には、環状のシール部材を構成する保持部
を挿嵌させて、相手方の部材にこの保持部から延在させ
たリップ部を摺接させることにより、内輪と外輪との間
の軸受部をシールするようにしたものにおいて、前記シ
ール部材には、前記リップ部と略直交する方向に延在さ
せた第２のリップ部を設け、また前記保持部には、その
円周方向に複数個所において、弾性板体を略コ字状に形
成したリテーナ部材を保持部に所定量だけ圧縮させるよ
うに挾持させて、前記シール装着溝に、このシール装着
溝が形成されている側の部材の表面に前記第２のリップ
部が当接する状態に挿嵌させる構成としたことを特徴と
する旋回軸受のシール装置。1. Out of an inner ring and an outer ring that form a turning wheel,
A seal mounting groove is formed on at least one member, and a holding portion that constitutes an annular sealing member is inserted into the seal mounting groove, and a lip portion extended from the holding portion is formed on the counterpart member. In the one in which the bearing portion between the inner ring and the outer ring is sealed by sliding contact, the seal member is provided with a second lip portion extending in a direction substantially orthogonal to the lip portion. In addition, in the holding portion, at a plurality of positions in the circumferential direction, a retainer member having an elastic plate body formed in a substantially U-shape is held by the holding portion so as to be compressed by a predetermined amount, and the retainer member is inserted into the seal mounting groove. A seal device for a slewing bearing, wherein the seal mounting groove is formed such that the seal member is inserted into the surface of the member on the side where the seal mounting groove is formed so that the second lip portion abuts. 【請求項２】 前記リテーナ部材には、前記シール部材
の保持部を挾持させた時に、その第２のリップ部の延在
方向とは反対方向に向けて剥離操作板部を連設する構成
としたことを特徴とする請求項１記載の旋回軸受のシー
ル装置。2. The peeling operation plate portion is connected to the retainer member in a direction opposite to the extending direction of the second lip portion when the holding portion of the seal member is held. The seal device for a slewing bearing according to claim 1, wherein: 【請求項３】 前記リテーナ部材は、前記シール部材の
保持部に対して、また前記シール装着溝に対して、それ
ぞれ接着剤により固着させる構成としたことを特徴とす
る請求項１または請求項２記載の旋回軸受のシール装
置。3. The retainer member is configured to be fixed to the holding portion of the seal member and to the seal mounting groove by an adhesive agent, respectively. Sealing device for a slewing bearing described. 【請求項４】 前記リテーナ部材は、前記シール装着溝
に圧入する構成としたことを特徴とする請求項１、請求
項２または請求項３記載の旋回軸受のシール装置。4. The seal device for a slewing bearing according to claim 1, wherein the retainer member is configured to be press-fitted into the seal mounting groove.
JP28814895A 1995-10-11 1995-10-11 Slewing bearing seal device Expired - Fee Related JP3629775B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28814895A JP3629775B2 (en) 1995-10-11 1995-10-11 Slewing bearing seal device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28814895A JP3629775B2 (en) 1995-10-11 1995-10-11 Slewing bearing seal device

Publications (2)

Publication Number Publication Date
JPH09105417A true JPH09105417A (en) 1997-04-22
JP3629775B2 JP3629775B2 (en) 2005-03-16

Family

ID=17726433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28814895A Expired - Fee Related JP3629775B2 (en) 1995-10-11 1995-10-11 Slewing bearing seal device

Country Status (1)

Country Link
JP (1) JP3629775B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006161969A (en) * 2004-12-08 2006-06-22 Toyota Industries Corp Bearing portion sealing method and its device
CN107575482A (en) * 2016-06-08 2018-01-12 斯凯孚公司 Revolution roller bearing with sealing arrangement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006161969A (en) * 2004-12-08 2006-06-22 Toyota Industries Corp Bearing portion sealing method and its device
CN107575482A (en) * 2016-06-08 2018-01-12 斯凯孚公司 Revolution roller bearing with sealing arrangement
CN107575482B (en) * 2016-06-08 2020-07-03 斯凯孚公司 Rotary roller bearing with sealing arrangement

Also Published As

Publication number Publication date
JP3629775B2 (en) 2005-03-16

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