JPH1113890A - Seal structure for crawler belt pin - Google Patents
Seal structure for crawler belt pinInfo
- Publication number
- JPH1113890A JPH1113890A JP9187862A JP18786297A JPH1113890A JP H1113890 A JPH1113890 A JP H1113890A JP 9187862 A JP9187862 A JP 9187862A JP 18786297 A JP18786297 A JP 18786297A JP H1113890 A JPH1113890 A JP H1113890A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- ring
- reinforcing
- crawler belt
- rubber
- 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
Links
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、所要のシール性を
確保して無潤滑状態でも摺動摩擦熱などに対する耐摩耗
性を高めた履帯ピンのシール構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crawler belt pin sealing structure which ensures required sealing performance and has improved abrasion resistance against sliding frictional heat even in a non-lubricated state.
【０００２】[0002]
【従来の技術】図２は、履帯ピン１の軸廻りにリンク部
材２が軸支された両部材間のシール構造の従来例を示す
断面図であり、図３はその履帯ピン１とリンク部材２と
の間の軸廻りに装着されて両部材間の気液密性を確保す
るシール部材３単体を示す断面図である。このシール部
材３はスペーサ４を介して履帯ピン１の軸廻りに装着さ
れ、これら３つの部材の組立後にブッシュ５を装着する
構造をとっている。2. Description of the Related Art FIG. 2 is a cross-sectional view showing a conventional example of a seal structure between two members in which a link member 2 is pivotally supported around the axis of a crawler pin 1, and FIG. FIG. 4 is a cross-sectional view showing a seal member 3 alone mounted around an axis between the seal member 3 and the gas-liquid tightness between the two members. The seal member 3 is mounted around the axis of the crawler belt pin 1 via a spacer 4 and has a structure in which the bush 5 is mounted after assembling these three members.
【０００３】シール部材３は、輪環状に形成されたＳＰ
ＣＣ等の金属製の芯金６を有し、この芯金６に、例えば
ＪＩＳ Ａ硬度８５の輪環状のウレタンゴムによるシー
ルリング７が焼きばめなどにより接合され、更に輪環状
のゴム製（例えばＮＢＲ製）シールリング８を接合して
一体化されている。The seal member 3 is formed of an SP formed in an annular shape.
For example, a seal ring 7 made of a ring-shaped urethane rubber having a JIS A hardness of 85 is bonded to the core 6 by shrink fitting or the like. For example, a seal ring 8 (made of NBR) is joined and integrated.
【０００４】ところで、かかる従来の履帯ピンのシール
構造にあっては、経時的使用によってブッシュ５の摺動
による圧接力と摩擦力とでシールリング７のシール面７
ａの耐摩耗性が低下し、所要のシール性を確保できなく
なる不具合がある。即ち、ブッシュ５を装着して組立て
た後、機体の作動によって摺動するブッシュ５を介して
シールリング７のシール面７ａにはかなりの高荷重が作
用するため、シール面７ａの潤滑が減少して摺接による
発熱が高まる。また、シール面７ａの周辺には、常にダ
ストが介在することでシール面７ａの摩耗が進み、所要
のシール性を確保するための要件である面圧が減少する
ようになる。In the conventional crawler belt pin sealing structure, the sealing surface 7 of the seal ring 7 is formed by the pressing force and the frictional force due to the sliding of the bush 5 over time.
There is a problem that the abrasion resistance of “a” is reduced and the required sealing property cannot be secured. That is, after the bush 5 is mounted and assembled, a considerably high load is applied to the seal surface 7a of the seal ring 7 via the bush 5 which slides by the operation of the machine body, so that lubrication of the seal surface 7a is reduced. Heat generation due to sliding contact increases. In addition, dust always intervenes around the seal surface 7a, so that the wear of the seal surface 7a progresses, and the surface pressure, which is a requirement for ensuring required sealing performance, is reduced.
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、無潤
滑状態となることでシール面の摺動発熱等に起因する耐
摩耗性の低下を防ぎ、所要のシール性を確保できる履帯
ピンのシール構造を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a crawler belt pin capable of securing a required sealing property by preventing a decrease in abrasion resistance due to sliding heat generation of a sealing surface due to a non-lubricated state. It is to provide a seal structure.
【０００６】[0006]
【課題を解決するための手段】本発明に係る履帯ピンの
シール構造は、リンク部材が履帯ピンを介して軸支さ
れ、これらリンク部材および履帯ピンの摺動面間に装着
されたシール部材によって所要のシール性を確保するも
のであって、シール部材はシール本体部とシール補強部
との組立体よりなり、一方のシール本体部が輪環状に形
成された高硬度で耐摩耗性の金属製芯金にゴム製シール
リングを接合させてなり、他方のシール補強部はそれぞ
れ輪環状に成形された内側の高強度で耐摩耗性のウレタ
ンゴム製第１補強リングと外側のゴム製第２補強リング
とを抱き合わせて結合させてなり、芯金の端部と第１補
強リングとを接触させてその接触面でシール性を確保す
るようになっている。According to the present invention, a crawler pin sealing structure according to the present invention comprises a link member pivotally supported via a crawler pin, and a seal member mounted between the link member and the sliding surface of the crawler pin. The required sealing property is ensured, and the sealing member is composed of an assembly of a seal main body and a seal reinforcing part, and one of the seal main bodies is formed of a ring-shaped high hardness and wear resistant metal. A rubber seal ring is joined to the metal core, and the other seal reinforcing portions are formed into a ring-shaped inner high-strength, wear-resistant urethane rubber first reinforcing ring and an outer rubber second reinforcing member. The ring and the ring are joined together, and the end of the cored bar and the first reinforcing ring are brought into contact with each other to ensure sealing at the contact surface.
【０００７】[0007]
【発明の実施の形態】図１は、本実施の形態のシール構
造を示す断面図であり、シール本体部１０とシール補強
部２０との組み合わせによる結合体である。シール本体
部１０は、輪環状に形成されたステンレス鋼（例えばＳ
ＵＳ３０４）等による金属製の芯金１１を有し、この芯
金１０に輪環状のゴム製（例えばＮＢＲ製）シールリン
グ１２が焼きばめなどして一体化されている。芯金１１
には、ステンレス鋼のような高硬度で耐摩耗性に優れ、
無潤滑状態でも摺動抵抗が低く、かつ摺接時の摩擦によ
る発熱が抑えられる材料が選定されて用いられている。FIG. 1 is a sectional view showing a seal structure according to the present embodiment, which is a combined body of a combination of a seal body 10 and a seal reinforcing section 20. FIG. The seal body 10 is formed of a ring-shaped stainless steel (for example, S
US304) or the like, and an annular rubber (for example, NBR) seal ring 12 is integrated with the core 10 by shrink fitting or the like. Core 11
Has high hardness and excellent wear resistance like stainless steel,
Materials that have low sliding resistance even in a non-lubricated state and that suppress heat generation due to friction during sliding contact are selected and used.
【０００８】また、シール補強部２０は、いずれも輪環
状に成形されて凹凸抱き合わせになる２つの第１補強リ
ング２１と第２補強リング２２よりなり、これら両リン
グ２１、２２の断面形状は、それぞれ互い違いに嵌合可
能な凹部２１ａ（２２ａ）と凸部２１ｂ（２２ｂ）が形
成されている。一方の第１補強リング２１は、ショアＤ
硬度約70以上の高強度ウレタンゴムが使用されている。
この第１補強リング２１は高硬度で耐摩耗性に優れ、無
潤滑状態でも摺動抵抗が低く、かつ摺接時の摩擦による
発熱を抑えることができる材料、例えばセラミックチタ
ン入りウレタンゴム等の金属粉充填ウレタンゴムが選定
される。他方の第２補強リング２２には、通常硬度のゴ
ム材、例えばＮＢＲ等を使用することができる。The seal reinforcing portion 20 is composed of two first reinforcing rings 21 and a second reinforcing ring 22 which are formed into an annular shape and are joined together to form irregularities. The cross-sectional shapes of these two rings 21 and 22 are as follows. A concave portion 21a (22a) and a convex portion 21b (22b) which can be fitted alternately are formed. One of the first reinforcing rings 21 is a Shore D
High-strength urethane rubber with a hardness of about 70 or more is used.
The first reinforcing ring 21 is made of a material having high hardness and excellent wear resistance, low sliding resistance even in a non-lubricated state, and capable of suppressing heat generation due to friction during sliding contact, for example, metal such as urethane rubber containing ceramic titanium. Powder filled urethane rubber is selected. For the other second reinforcing ring 22, a rubber material having normal hardness, for example, NBR can be used.
【０００９】かかるシール本体部１０およびシール補強
部２０の組立体において、経時的に使用中はシール本体
部１０側の芯金１１の端部１１ａと、シール補強部２０
側の第１補強リング２１との間で所要のシール性を確保
する。芯金１１および第１補強リング２１は共に高強度
で耐摩耗性に優れ、無潤滑状態でも摺動抵抗が低く、か
つ摺接時の摩擦による発熱を抑えることができる。芯金
１１の端部１１ａはダストが介在しても摩耗に対して十
分な耐久強度を備えている。また、機体の作動中、芯金
１１と第１補強リング２１によるシール機能と相まっ
て、シール本体部１０側のシールリング１２とシール補
強部２０側の第２補強リング２２が追随し、それによっ
てシール性を更に高めることができる。In the assembly of the seal main body 10 and the seal reinforcing section 20, the end 11a of the core 11 on the seal main body 10 side and the seal reinforcing section 20 during use with time.
A required sealing property is secured between the first reinforcing ring 21 on the side. Both the metal core 11 and the first reinforcing ring 21 have high strength and excellent wear resistance, have low sliding resistance even in a non-lubricated state, and can suppress heat generation due to friction during sliding contact. The end 11a of the metal core 11 has sufficient durability against abrasion even if dust is present. Also, during the operation of the fuselage, the seal ring 12 of the seal body 10 and the second reinforcement ring 22 of the seal reinforcing portion 20 follow along with the sealing function of the core metal 11 and the first reinforcing ring 21, thereby forming a seal. Properties can be further enhanced.
【００１０】[0010]
【発明の効果】本発明の履帯ピンのシール構造は、リン
ク部材と履帯ピンの摺動面間の所要のシール性を確保す
るものであって、摺動面間に装着されるシール部材がシ
ール本体部とシール補強部との組立体とよりなってお
り、シール本体部側の高硬度で耐摩耗性の高い金属製の
芯金の端部を、シール補強部側の高強度で耐摩耗性ウレ
タンゴム製第１補強リングに接触させ、それらの接触面
ではダストの介在があっても摩擦の促進を抑えてシール
性を確保すると共に、無潤滑状態でも摺動抵抗が低く、
かつ摺接時の摩擦による発熱を抑えることができる。ま
た、いずれもゴム製のシーリングおよび第２補強リング
の追随性を利用することで、シール性を有効に維持する
こともできる。According to the seal structure of the crawler pin of the present invention, a required sealing property between the link member and the slide surface of the crawler pin is ensured, and the seal member mounted between the slide surfaces is a seal. It consists of an assembly of a main body and a seal reinforcement, and the end of a metal core with high hardness and high abrasion resistance on the seal body side, high strength and wear resistance on the seal reinforcement side In contact with the first reinforcing ring made of urethane rubber, the contact surface between them suppresses the promotion of friction even if dust is present, and secures the sealing performance.
In addition, heat generation due to friction at the time of sliding contact can be suppressed. In addition, by utilizing the followability of the rubber sealing and the second reinforcing ring, the sealing performance can be effectively maintained.
【図１】本発明による履帯ピンのシール構造の実施の形
態を示す組立断面図である。FIG. 1 is an assembled sectional view showing an embodiment of a crawler belt pin sealing structure according to the present invention.
【図２】従来例のシール部材を装着した状態の履帯ピン
シール構造を示す組立断面図である。FIG. 2 is an assembled sectional view showing a crawler belt pin seal structure in a state where a conventional seal member is mounted.
【図３】従来例のシール部材単体を示す組立断面図であ
る。FIG. 3 is an assembled sectional view showing a conventional seal member alone.
１０ シール本体部 １１ 芯金 １１ａ シール端部 １２ シールリング ２０ シール補強部 ２１ 第１補強リング ２２ 第２補強リング DESCRIPTION OF SYMBOLS 10 Seal main body part 11 Core metal 11a Seal end part 12 Seal ring 20 Seal reinforcement part 21 First reinforcement ring 22 Second reinforcement ring
Claims (1)
これらリンク部材および履帯ピンの摺動面間に装着され
たシール部材によって所要のシール性を確保するシール
構造において、 シール部材はシール本体部とシール補強部との組立体よ
りなり、一方のシール本体部が輪環状に形成された高硬
度で耐摩耗性の金属製芯金にゴム製シールリングを接合
させてなり、他方のシール補強部はそれぞれ輪環状に成
形された内側の高強度で耐摩耗性のウレタンゴム製第１
補強リングと外側のゴム製第２補強リングとを抱き合わ
せて結合させてなり、芯金の端部と第１補強リングとを
接触させてその接触面でシール性を確保することを特徴
とする履帯ピンのシール構造。1. A link member is pivotally supported via a track pin,
In a seal structure in which required sealability is secured by a seal member attached between the link member and the sliding surface of the crawler belt pin, the seal member comprises an assembly of a seal body and a seal reinforcement, and one seal body is provided. A rubber seal ring is joined to a high-hardness, wear-resistant metal core with a ring-shaped part, and the other seal reinforcement parts are high-strength, abrasion-resistant inner parts that are each formed into a ring. Urethane rubber first
A crawler belt comprising a reinforcing ring and an outer rubber second reinforcing ring held together and joined together, and an end of the core metal and the first reinforcing ring are brought into contact with each other to ensure sealing properties at the contact surface. Pin seal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18786297A JP3921741B2 (en) | 1997-06-27 | 1997-06-27 | Track pin seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18786297A JP3921741B2 (en) | 1997-06-27 | 1997-06-27 | Track pin seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1113890A true JPH1113890A (en) | 1999-01-22 |
| JP3921741B2 JP3921741B2 (en) | 2007-05-30 |
Family
ID=16213524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18786297A Expired - Lifetime JP3921741B2 (en) | 1997-06-27 | 1997-06-27 | Track pin seal structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3921741B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100829522B1 (en) | 2007-07-13 | 2008-05-29 | 주식회사 디씨에프 트랙 | Link seal of crawler track and method thereof |
| KR100856458B1 (en) * | 2008-04-30 | 2008-09-04 | 허영배 | Link seal assembly |
| KR101022265B1 (en) | 2009-12-17 | 2011-03-21 | 허정중 | Link-seal for trackfor track-laying vehicle |
| US9091956B2 (en) | 2012-02-10 | 2015-07-28 | Canon Kabushiki Kaisha | Image forming apparatus for performing exposure a plurality of times |
| KR20170050260A (en) * | 2015-10-30 | 2017-05-11 | 코웨이 주식회사 | Air treatment apparatus |
| KR20230073862A (en) * | 2021-11-19 | 2023-05-26 | 차윤아 | Seal assembly for a track vehicle |
-
1997
- 1997-06-27 JP JP18786297A patent/JP3921741B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100829522B1 (en) | 2007-07-13 | 2008-05-29 | 주식회사 디씨에프 트랙 | Link seal of crawler track and method thereof |
| KR100856458B1 (en) * | 2008-04-30 | 2008-09-04 | 허영배 | Link seal assembly |
| KR101022265B1 (en) | 2009-12-17 | 2011-03-21 | 허정중 | Link-seal for trackfor track-laying vehicle |
| US9091956B2 (en) | 2012-02-10 | 2015-07-28 | Canon Kabushiki Kaisha | Image forming apparatus for performing exposure a plurality of times |
| KR20170050260A (en) * | 2015-10-30 | 2017-05-11 | 코웨이 주식회사 | Air treatment apparatus |
| KR20230073862A (en) * | 2021-11-19 | 2023-05-26 | 차윤아 | Seal assembly for a track vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3921741B2 (en) | 2007-05-30 |
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