JP3619169B2 - Rubber crawler and rubber crawler traveling device - Google Patents

Rubber crawler and rubber crawler traveling device Download PDF

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JP3619169B2
JP3619169B2 JP2001147031A JP2001147031A JP3619169B2 JP 3619169 B2 JP3619169 B2 JP 3619169B2 JP 2001147031 A JP2001147031 A JP 2001147031A JP 2001147031 A JP2001147031 A JP 2001147031A JP 3619169 B2 JP3619169 B2 JP 3619169B2
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rubber crawler
band
longitudinal direction
peripheral portion
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JP2002337766A (en
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知久 吉田
勝昭 横尾
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Sumitomo Rubber Industries Ltd
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Sumitomo Rubber Industries Ltd
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Priority to KR1020020026894A priority patent/KR100638885B1/en
Priority to CNB021197997A priority patent/CN1259212C/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/18—Tracks
    • B62D55/24—Tracks of continuously flexible type, e.g. rubber belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/18—Tracks
    • B62D55/24—Tracks of continuously flexible type, e.g. rubber belts
    • B62D55/253—Tracks of continuously flexible type, e.g. rubber belts having elements interconnected by one or more cables or like elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/18—Tracks
    • B62D55/26—Ground engaging parts or elements
    • B62D55/28—Ground engaging parts or elements detachable
    • B62D55/286—For soft grounds, e.g. consisting of snow or swamp
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/02—Travelling-gear, e.g. associated with slewing gears

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Belt Conveyors (AREA)
  • Vibration Prevention Devices (AREA)
  • Tires In General (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明はコンバイン、運搬車、雪上車等の軟弱地または畑地等を走行する車両に取り付けられるゴムクローラとこのゴムクローラを装着したゴムクローラ走行装置に関する。
【０００２】
【従来の技術】
ゴムクローラを備えたゴムクローラ走行装置は現在コンバイン等の農業機械、バックホー等の建設作業機械等に幅広く用いられている。
従来のゴムクローラ走行装置の１例を図１５に示す。
この図１５に示すゴムクローラ走行装置３１は、ゴムクローラ３２とこのゴムクローラ３２を駆動するための駆動輪である駆動スプロケット３３と前記ゴムクローラの内面に接して配設される従動輪３５および転動輪３６とを備えている。
【０００３】
前記ゴムクローラ３２は、無端体状に形成した帯本体３９と、この帯本体３９の外面に複数形成された牽引用のラグ４０とから主構成されるものである。
前記ラグ４０を前記帯本体３９に形成するときの配列に関しては、トラクション性能の向上、ラグ４０間の排土性の向上のために、前記帯本体３９の帯幅方向における前記ラグ４０の長さを長短変化させてその長さの長いラグと短いラグを交互に配列したり、または前記ラグ４０を前記帯本体３９の帯長手方向に対して千鳥状に配列したりといった種々の配列パターンが採用されている。
【０００４】
前記配列パターンの一例を、図１６に示す。
この図１６は前記ゴムクローラ３２の、接地面側からみた平面図を示している。
図１６におけるゴムクローラ３２は前記帯本体３９の帯幅方向の長さの短い短ラグ４１と長さの長い長ラグ４２とを前記帯本体３９の帯長手方向に一定の間隔で交互に配列した配列パターンを有している。
このような配列パターンを有するゴムクローラ３２を装着したゴムクローラ走行装置３１を運転すると、このゴムクローラ３２が前記転動輪３６の下を通過するときに前記ゴムクローラの自重や前記ゴムクローラ走行装置３１が取り付けられている走行機体（図示していない。）の重量等によって押しつけられ、このゴムクローラ３２の押しつけられた部分は下方向に変形することとなっていた。
【０００５】
この場合、前記短ラグ４１と前記長ラグ４２とでは前記帯幅方向の長さが異なるために短ラグ４１が形成されている短ラグ周辺部と前記長ラグが形成されている長ラグ周辺部の剛性は異なり、より具体的には前記短ラグ周辺部の剛性よりも前記長ラグ周辺部の剛性が大きく、これによって、前記短ラグ周辺部と前記長ラグ周辺部との間に剛性差が生じるようになっていた。
前記剛性差があるときのゴムクローラの変形具合を図１７において説明する。
図１７は前記ゴムクローラ走行装置３１の運転時に、前記ゴムクローラ３２の接地している部分を示したものである。
【０００６】
この図１７では、二点鎖線による仮想線によって変形前のゴムクローラ３２を、実線によって変形したゴムクローラ３２を示している。
前述したようにゴムクローラ３２において接地している部分はゴムクローラ３２の自重や走行機体の重量等の荷重によって押しつけられて下方に変形していた。
この変形については、前記長ラグ周辺部の変形量よりも前記短ラグ周辺部の変形量が大きくなっており、その変形量の差を図１７において記号Ａで示す矢印（以下、変形差Ａという。）で示している。
【０００７】
前記短ラグ周辺部と長ラグ周辺部とのあいだに前記変形差Ａが生じるのは、短ラグが長ラグよりもその大きさが小さい（前記帯幅方向の長さが短い）ために、前記短ラグ周辺部の垂直剛性が前記長ラグ周辺部の垂直剛性よりも小さくなっているからであった。
【０００８】
【発明が解決しようとする課題】
前記変形差Ａが生じることによって、転動輪３６は前記変形差Ａの分上下運動することとなり、この上下運動によって前記ゴムクローラ走行装置３１は運転中に振動を生じていた。
また、前記振動は走行機体全体に伝播してしまい、走行機体が振動してしまうと運転者がこの走行機体を操縦しにくくなるし、さらに乗り心地の悪いものになってしまっていた。
【０００９】
さらに、前記振動によって走行機体内に装備された電子機器・計器類の故障・誤作動等を引き起こしてしまうことにもなりかねない。
そこで本発明は上記事情に鑑み、前記短ラグ周辺部のような剛性の低い部分と前記長ラグ周辺部のような剛性の高い部分とが形成されたゴムクローラを前記ゴムクローラ走行装置に装着して運転したときに、前記ゴムクローラ走行装置の振動を低減できるゴムクローラを提供することを第１の目的とする。
前述した第１の目的に加えて、前記剛性の低い部分と高い部分とが形成されたゴムクローラを装着している前記ゴムクローラ走行装置において、運転しているときの振動を低減することのできるゴムクローラ走行装置を提供することを第２の目的とする。
【００１０】
【課題を解決するための手段】
本発明は上述の問題点を解決するために以下の技術的手段を講じた。
すなわち、第１の技術的手段としては、無端帯状に形成した帯本体（１２）と、この帯本体（１２）の帯長手方向に交差して延伸する牽引用のラグ（１３）を備え、このラグ（１３）を、前記帯本体（１２）の前記帯長手方向の間隔を有して一体に突隆形成し、剛性の低い第１ラグ周辺部（１４）と剛性の高い第２ラグ周辺部（１５）とが形成されるように、前記ラグ（１３）が前記帯長手方向に沿って隣り合うラグ配列パターンを有したゴムクローラ（２）において、前記ラグ（１３）は側方からみて根元から突端部に向かって先細りとなるテーパー形状とされており、前記ラグ（１３）におけるテーパーのついたテーパー側壁（２２）と帯本体（１２）の外面とが交差したところの内角の角度を前記テーパー形状とするためのテーパー角度（α）とし、第２ラグ（１５ａ）のテーパー角度（α２）を第１ラグ（１４ａ）のテーパー角度（α１）よりも小さくし、かつ前記第２ラグ（１５ａ）のテーパー側壁（２２）の少なくとも１外面に、第２ラグ（１５ａ）の突端部から鉛直下方に沿ったストレート面（２３）と、このストレート面（２３）から第２ラグ（１５ａ）の根元に向かって末広がりとなるテーパー面（２４）とを形成して第２ラグ（１５ａ）の太さを第１ラグ（１４ａ）よりも細くしたことである。
【００１１】
第２の技術的手段としては、無端帯状に形成した帯本体（１２）と、この帯本体（１２）の帯長手方向に交差して延伸する牽引用のラグ（１３）を備え、このラグ（１３）を、前記帯本体（１２）の前記帯長手方向の間隔を有して一体に突隆形成し、剛性の低い第１ラグ周辺部（１４）と剛性の高い第２ラグ周辺部（１５）とが形成されるように、前記ラグ（１３）が前記帯長手方向に沿って隣り合うラグ配列パターンを有したゴムクローラ（２）において、前記ラグ（１３）は側方からみて根元から突端部に向かって先細りとなるテーパー形状とされており、前記ラグ（１３）におけるテーパーのついたテーパー側壁（２２）と帯本体（１２）の外面とが交差したところの内角の角度を前記テーパー形状とするためのテーパー角度（α）とし、第１ラグ（１４ａ）のテーパー角度（α１）を第２ラグ（１５ａ）のテーパー角度（α２）よりも大きくし、かつ前記第２ラグ（１５ａ）のテーパー側壁（２２）の少なくとも１外面に、第２ラグ（１５ａ）の突端部から鉛直下方に沿ったストレート面（２３）と、このストレート面（２３）から第２ラグ（１５ａ）の根元に向かって末広がりとなるテーパー面（２４）とを形成して第１ラグ（１４ａ）の太さを第２ラグ（１５ａ）よりも太くしたことである。
【００１２】
第３の技術的手段としては、前記第１ラグ（１４ａ）の太さを太くするためにこの第１ラグ（１４ａ）の帯長手方向の根元幅を前記第２ラグ（１５ａ）の根元幅よりも広くしたことである。
第４の技術的手段としては、前記第１ラグ（１４ａ）の突端部（１８）における前記帯長手方向の突端幅が前記第２ラグ（１５ａ）の突端部（１９）における前記帯長手方向の突端幅の１０〜３０％増しに形成されることである。
第５の技術的手段としては、前記第２ラグ（１５ａ）の突端部（１９）における前記帯長手方向の突端幅は前記第１ラグ（１４ａ）の突端部（１８）における前記帯長手方向の突端幅と略等しくされていることである。
【００１３】
第６の技術的手段としては、前記帯本体（１２）は、前記ラグ（１３）のそれぞれの位置に対応した内部位置に内設された補強芯体（１６）を有し、前記補強芯体（１６）同士の間隔に対応する前記帯本体（１２）の内面部分に凸部（２０）を形成したことである。
第７の技術的手段としては、前記第２ラグ（１５ａ）同士の間隔に対応する前記帯本体（１２）の内面部分に凸部（２０）を設け、前記第１ラグ（１４ａ）の根元部分に対応する帯本体（１２）部分の厚さを厚く形成し、この部分を厚肉部（２１）としたことことである。
【００１４】
第８の技術的手段としては、前記第１ラグ周辺部（１４）と前記第２ラグ周辺部（１５）との前記剛性の差を小さくするために前記帯本体（１２）のゴムの硬度を前記ラグ（１３）の硬度より高めて帯本体（１２）を形成したことである。
第９の技術的手段としては、ゴムクローラ（１３）と、このゴムクローラ（１３）を駆動するための駆動輪（３）と、前記ゴムクローラの内面に接して配設される従動輪（５）および転動輪（６）を備えたゴムクローラ走行装置（１）において、前記ゴムクローラに請求項１から８のいずれかに記載のゴムクローラを用いたことである。
【００１５】
【発明の実施の形態】
以下、図面を参照して本発明の実施の形態を説明する。
本発明におけるゴムクローラおよびゴムクローラ走行装置はコンバイン等の農業機械やバックホー等の建設作業機械、雪上車等種々の機械に使用されるものである。
本発明におけるゴムクローラ走行装置を図１２に示す。
この図１２に示すゴムクローラ走行装置１はゴムクローラ２とこのゴムクローラ２を駆動するための駆動輪である駆動スプロケット３と、前記ゴムクローラ２の内面に接して配設される従動輪５および転動輪６とから主構成されるものである。
【００１６】
前記ゴムクローラ２は無端帯状に形成されたゴム製の帯本体１２とこの帯本体１２の外面に複数形成されるゴム製の牽引用ラグ１３とから主構成される。
前記ラグ１３は、側方から見ると略台形状であり前記帯本体１２の帯長手方向に交差して延伸され、前記帯本体１２の帯長手方向に沿って所定の間隔をおいて配列されている。
前記配列パターンを図１３によって説明する。
図１３は、前記ゴムクローラ２を接地面側からみた平面図である。
【００１７】
図１３に示すようにゴムクローラ２は前記帯本体１２の帯幅方向の長さが短い第１ラグ１４ａと長さの長い第２ラグ１５ａとが前記帯長手方向に沿って間隔を有して交互に配列され、前記帯本体１２と一体とされ突隆形成されている。
このように前記帯幅方向における長さが長短異なるラグ１３を配列するのは前記帯長手方向に沿って隣り合うラグ同士の間に泥（土）が詰まってラグ１３（ゴムクローラ２）の牽引力を低減させないためである。つまり、前記配列パターンを採用することによって隣り合うラグ同士の間に泥（土）が詰まることを防止（排土性を向上）でき、ラグ１３（ゴムクローラ２）の牽引力を維持できるようになっているのである。
【００１８】
前記帯本体１２の帯幅方向の中央には前記駆動スプロケット３の歯が係合する係合孔１７が形成されている。
この係合孔１７は所定の間隔をおいて前記帯本体１２の全周に亘って設けられており、この係合孔１７に前記駆動スプロケット３の歯が係脱されることで前記駆動スプロケット３は前記ゴムクローラ２とかみ合って動力を前記ゴムクローラ２に伝達できるようになっている。
図１４は前記ゴムクローラ２の図１３におけるＣ−Ｃ矢印断面図である。
【００１９】
この図１４に示すようにゴムクローラ２には補強芯体１６と、ゴムクローラ２の伸張を規制するスチールコード等の抗張体２６とが内設されている。
前記補強芯体１６は金属、硬質樹脂等の材料で成形され、前記ラグ１３の位置と対応する前記帯本体１２の内部位置に複数設けられており、この補強芯体１６には前記転動輪６の位置規制をするための突起部２７が前記帯本体１２の内面側に突出するように設けられている。
図１４に示す転動輪６は前記突起部２７を跨いでゴムクローラ２の内周面上を転動するいわゆるマタギ転輪にて構成されており、前記駆動スプロケット３によって駆動されたゴムクローラ２はその接地している部分が前記転動輪６の下を通過するようになっている。
【００２０】
以下、前記ゴムクローラ２が前記転動輪６の下を通過する際の様子を説明する。
前記ゴムクローラ２が接地して前記転動輪６の下を通過するときに、前記ゴムクローラ２は、前記ゴムクローラ走行装置１が取り付けられる走行機体の重量やゴムクローラ２の自重等の荷重により下方向に押しつけられて変形する。
前記ゴムクローラ２において前記第１ラグ１４ａが形成されている周辺部（以下、第１ラグ周辺部１４という。）と前記第２ラグ１５ａが形成されている周辺部（以下、第２ラグ周辺部１５という。）とでは前記変形の変形量が異なる。
【００２１】
より具体的には前記第１ラグ周辺部１４の前記変形量が前記第２ラグ周辺部１５の前記変形量よりも大きく、前記第第１ラグ周辺部１４の前記変形量と前記第２ラグ周辺部１５の前記変形量とでは差（以下、変形差という。）がある。
換言すれば、前記第１ラグ１４ａと前記第２ラグ１５ａの大きさ（前記帯幅方向における前記長さ）が異なり（第１ラグ１４ａが第２ラグ１５ａよりも小さく）、前記第１ラグ周辺部１４の垂直剛性と前記第２ラグ周辺部１５の垂直剛性とに差（以下、剛性差という。）があるのである。
【００２２】
前記転動輪６は前記剛性差によって生じた前記変形差分だけ上下運動をする。
この上下運動は前記ゴムクローラ走行装置１の振動となってこのゴムクローラ走行装置１が取り付けられる走行機体に伝播される。
前記ゴムクローラ２は前記振動を低減することができる新規な構造を有している。
以下、このゴムクローラ２の構造について説明する。
図１は本発明におけるゴムクローラの第１実施形態を示している。
【００２３】
この図１は図１３で説明したゴムクローラ２の一部を示す側面図である。
この第１実施形態において、前記第１ラグ１４ａと前記第２ラグ１５ａはともに前記帯本体１２と一体に形成されているその根元部分からその突端部にかけて先細り（突隆）となるテーパー形状として形成されており、その前記帯長手方向（記号Ｘの矢印で示す方向。以下他の図において同じ。）の前後の側壁はテーパーのついた（傾斜状の）テーパー側壁２２とされている。
前記第２ラグ１５ａの前記テーパー側壁２２には前記第２ラグ１５ａの突端部から鉛直下方に沿ったストレート面２３と、前記ストレート面２３から前記第２ラグ１５ａの前記根元部分にかけて末広がりとなるテーパー面２４とが形成されている。
【００２４】
ここで、前記テーパー側壁２２と前記帯本体１２の外面とが交差する角度をテーパー角度αとすると第２ラグ１５ａにおけるテーパー角度（以下、第２テーパー角度α２という。）は前記第１ラグ１４ａにおけるテーパー角度（以下、第１テーパー角度α１という。）よりも小さくされている。
このように前記第２テーパー角度α２を前記第１テーパー角度α１よりも小さくすることで、前記第２ラグ１５ａの前記帯長手方向における太さを前記第１ラグ１４ａにおける前記帯長手方向における太さよりも細くすることができる。
【００２５】
なお、図１に示す２点鎖線は前記第１ラグ１４ａと前記第２ラグ１５ａの太さを比較するために前記第１ラグ１４ａの外形を仮想線として前記第２ラグ１５ａの位置に示したものである（後述する図２，図３において同じ。）。
これによって、前記第２ラグ１５ａが形成されている周辺部（以下第１ラグ周辺部１４という。）の垂直剛性を、前記第１ラグ１４ａが形成されている周辺部（以下、第１ラグ周辺部１４という。）の垂直剛性よりも小さくすることができる。
【００２６】
前記ストレート面２３を設けることで前記第２ラグ１５ａの突端部（以下、第２突端部１９という。）における前記帯長手方向の突端幅と前記第１ラグ１４ａの突端部（以下、第１突端部１８という。）の該突端幅とを略等しくすることができる。このとき、前記第１ラグ１４ａの前記突端幅と前記第２ラグ１５ａの前記突端幅との差は２〜３ｍｍ程度の範囲内にあることが望ましい。
こうすればこの太さが相対的に太くなった前記第１ラグ１４ａと細くなった第２ラグ１５ａとの配列パターンが見た目にちぐはぐな感じを受ける場合に、前記突端幅を略等しくしたことで見た目のちくはぐ感を軽減できるのである。
【００２７】
また、前記ストレート面２３を形成することによって、このストレート面２３を形成しない場合と比較して、前記第２ラグ１５ａの突端部の前記帯長手方向における太さを太くすることができ、この突端部の摩耗寿命を延長できる。
図２は本発明におけるゴムクローラの第２実施形態を示している。
この第２実施形態においては前記第２ラグ１５ａは第１実施形態において説明したストレート面２３を有していない。
このように前記ストレート面２３を前記第２ラグ１５ａに形成しなくても前記第２テーパー角度α２を前記第１テーパー角度α１よりも小さくすることで、前記第２ラグ１５ａの前記帯長手方向における太さを前記第１ラグ１４ａの該太さよりも細くして前記第１ラグ周辺部１４と前記第２ラグ周辺部１５の剛性差を小さくすることができ、このことにより、運転中のゴムクローラ走行装置１の運転時の振動を低減することができるのである。
【００２８】
図３は本発明におけるゴムクローラの第３実施形態を示している。
この第３実施形態において、前記第２ラグ１５ａはその片側の前記テーパー側壁２２についての前記第２テーパー角度α２を前記第１テーパー角度α１よりも小さくすることによって前記第２ラグ１５ａの前記太さを前記第１ラグ１４ａの前記太さよりも細くして、前記第１ラグ周辺部１４と前記第２ラグ周辺部１５の前記剛性差を小さくしている。
この第３実施形態は、前記第２ラグ１５ａにおいて前記帯長手方向における前後いずれか一方のテーパー側壁２２について前記第２テーパー角度α２を前記小さくするものであるが、このとき、前記第２ラグ１５ａが地面を蹴る面（蹴り面）を有するテーパー側壁２２とは反対のテーパー側壁２２において前記第２テーパー角度α２を前記小さくすることが望ましいが、第２ラグ１５ａの強度（剛性）が十分あれば前記蹴り面を有するテーパー側壁２２において前記第２テーパー角度α２を前記小さくする手段を講じてもよい。
【００２９】
図４は本発明におけるゴムクローラの第４実施形態を示している。
この第４実施形態においては、前記第１ラグ１４ａの前記第１テーパー角度α１を前記第２テーパー角度α２よりも大きくして前記第１ラグ１４ａの前記太さを前記第２ラグ１５ａの前記太さよりも太く形成している。
なお、図４に示す２点鎖線は前記第１ラグ１４ａと前記第２ラグ１５ａの前記太さを比較するために前記第２ラグ１５ａの外形を仮想線として前記第１ラグ１４ａの位置に示したものである。
【００３０】
これによって、前記第１ラグ周辺部１４の剛性を高めて前記第２ラグ周辺部１５の剛性との剛性差を小さくすることができるのである。
前記第１ラグ１４ａを前記太くすることによってこの第１ラグ１４ａの第１突端部１８における前記帯幅方向の突端幅は前記第２ラグ１５ａの第２突端部１９における前記帯幅方向の突端幅よりも広くなるが、前記第１ラグ１４ａの前記突端幅は前記第２ラグ１５ａの前記突端幅の１０〜３０％増しの範囲内で調整することが望ましい。
【００３１】
図５は本発明におけるゴムクローラの第５実施形態を示している。この図５はゴムクローラ２を前記ゴムクローラ走行装置１に装着したときの前記駆動輪３５の周辺を示す部分側面図である。
この第５実施形態におけるゴムクローラ２は、前記第１ラグ１４ａの前記帯長手方向の根元幅（記号Ｂの矢印で示す幅）を前記第２ラグ１５ａの該根元幅よりも広くして形成されている。
このように剛性の低い前記第１ラグ周辺部１４に位置する第１ラグ１４ａの前記根元幅を広くすることによって前記第１ラグ周辺部１４の剛性を高め剛性の高い前記第２ラグ周辺部１５との剛性の差を小さくすることができるようになっており、これによって前記ゴムクローラ走行装置１に装着して運転したときの振動を低減できるのである。
【００３２】
図６乃至８は本発明におけるゴムクローラに備えたラグの配列パターンを模式的に示している。
図６は本発明におけるゴムクローラの第６実施形態を示している。
前述した第１乃至４実施形態においては、前記帯本体１２に配列されたラグ１３は前記帯本体１２の帯幅方向に沿って真っ直ぐなものを配列した配列パターンを有するものであったが、この第６実施形態におけるラグ１３の配列パターンはへの字状のラグ１３であって前記帯幅方向の長さが長短異なるものを前記帯長手方向に間隔をおいて交互に配列したものとなっている。
【００３３】
この配列パターンを有するゴムクローラ２においても接地したところで剛性の小さな（変形量の大きな）第１ラグ周辺部１４と剛性の大きな（変形量の小さな）第２ラグ周辺部１５とが形成される。
このような配列パターンを有するゴムクローラにおいても第１ラグ１４ａと第２ラグ１５ａを第１乃至４実施形態において説明したように形成して前記第１ラグ周辺部１４と前記第２ラグ周辺部１５との剛性差を小さくすることができる。
図７は本発明におけるゴムクローラの第７実施形態を示している。
【００３４】
この第７実施形態においては第１実施形態で説明した第２ラグ１５ａに代えて前記帯幅方向の長さが略等しい２個のラグ１３を前記帯幅方向に並べて形成している。
図７に示す配列パターンにおいても前記剛性の小さな第１ラグ周辺部１４と前記剛性の大きな第２ラグ周辺部１５とが形成されることとなり、前記第１ラグ周辺部１４に位置する第１ラグ１４ａと前記第２ラグ周辺部１５に位置する第２ラグ１５ａを第１乃至４で説明したように形成して前記第１ラグ周辺部１４と前記第２ラグ周辺部１５との前記剛性差を小さくすることができる。
【００３５】
図８は本発明におけるゴムクローラの第８実施形態を示している。
この第８実施形態におけるゴムクローラ２は、前記帯幅方向の長さの略等しいラグ１３を前記帯本体１２の帯長手方向に千鳥状に配列した配列パターンを有している。
図８に示す１点鎖線はこのゴムクローラ２を備えた走行機体の重量による荷重のかかる位置（方向）を示している（図６および図７に示す１点鎖線も同様である。）。
【００３６】
この第８実施形態においては、前記荷重のかかる位置が前記帯本体１２の帯幅方向中央からずれている。
これによって、隣り合うラグ１３の荷重分担の割合が変わり、図８に示すように前記剛性の小さな第１ラグ周辺部１４と前記剛性の大きな第２ラグ周辺部１５とが形成されることとなる。
この第８実施形態においても前記第１ラグ周辺部１４に位置する第１ラグ１４ａと前記第２ラグ周辺部１５に位置する第２ラグ１５ａとを前述した第１乃至４で説明したように形成して前記第１ラグ周辺部１４と前記第２ラグ周辺部１５との剛性差を小さくしてこのゴムクローラ２を装着したゴムクローラ走行装置の運転中の振動を低減することができる。
【００３７】
図９は本発明におけるゴムクローラの第９実施形態を示している。
この第９実施形態では、前記ゴムクローラ２における第２ラグ１５ａ同士の間隔に対応する前記帯本体１２の内面部分に補強のための凸部２０が形成されている。
前記ゴムクローラ２において最も変形しやすいのは帯本体１２である。
この第９実施形態のように剛性の高い前記第２ラグ１５ａ同士の間隔に対応する前記帯本体１２の内面部分に前記凸部２０を設けると剛性の高い前記第２ラグ周辺部１５以外の部分、すなわち剛性の低い帯本体１２部分および第１ラグ周辺部１４の剛性を高めることができる。
【００３８】
これによって、前記第２ラグ周辺部１５と前記剛性の低い部分（前記第２ラグ１５ａ間の帯本体１２部分および前記第１ラグ周辺部１４）の剛性差を小さくすることができ、このゴムクローラ２を装着した前記ゴムクローラ走行装置１の運転時の振動を軽減できるのである。
図１０は本発明におけるゴムクローラの第１０実施形態を示している。
この第１０実施形態は、前記補強芯体１６同士の間隔に対応する帯本体１２の内面部分に凸部２０を形成したものである。
【００３９】
帯本体１２に内設された前記補強芯体１６によってこの補強芯体１６が内設された周辺部分は前記剛性が高くなるが、この補強芯体１６同士間の帯本体１２部分は前記補強芯体１６が内設されている周辺部分よりも剛性が低くなってしまう。
そこで図１０に示すように前記補強芯体１６同士間の帯本体１２の内面部分に凸部２０を設け前記補強芯体１６が内設された周辺部と前記補強芯体１６同士間の帯本体１２部分との剛性の差を小さくすることできるようになっている。
【００４０】
これによって、ゴムクローラ２が前記転動輪６のしたを通過するときの前記補強芯体１６付近の変形量と前記補強芯体１６同士間の帯本体１２部分の変形量との差を小さくして転動輪６の上下運動を小さくすることができるのである。
図１１は本発明におけるゴムクローラの第１１実施形態を示している。
この第１１実施形態におけるゴムクローラ２には、剛性の低い第１ラグ周辺部１４に位置する第１ラグ１４ａと剛性の高い第２ラグ周辺部１５に位置する第２ラグ１５ａとの間隔に相当する帯本体１２の内面部分に補強のための凸部２０が形成されている。
【００４１】
また、前記第１ラグ１４ａの根元部分に対応する帯本体１２部分の厚さが厚くされおり、この厚くされた部分を厚肉部２１として示している。
この図１１において、前記厚肉部２１が形成されていない部分、すなわち、前記第２ラグ１５ａの根元部分に対応する帯本体１２部分の厚さは、記号Ｅの矢印の幅となっているが、前記厚肉部２１はさらに記号Ｄで示す幅分だけ厚さが厚くされている。
前記凸部２０を形成した理由は第１０実施形態において説明したとおりであるが、この第１１実施形態では、さらに前記厚肉部２１を設け、剛性の低い部分（第１ラグ周辺部１４およびラグ１３同士間の帯本体１２部分）の剛性を高め、剛性の高い前記第２ラグ周辺部１５と剛性の低い部分（第１ラグ周辺部１４およびラグ１３同士間の帯本体１２部分）との剛性の差を小さくすることができるようになっている。
【００４２】
以上説明したようにゴムクローラ２は第１乃至第１１実施形態で説明したそれぞれの手段を適宜適用することで剛性の低い部分と高い部分との剛性差を小さくすることができるようになっている。
また、第１から１０の実施形態におけるゴムクローラ２はいずれも剛性の高い部分（前記第２ラグ周辺部１５、前記帯本体１２の補強芯体１６周辺部等）と低い部分（前記第１ラグ周辺部１４、ラグ間の前記帯本体１２部分等）の剛性差が小さくされているので、前記ゴムクローラ走行装置１に前記ゴムクローラ２を装着して運転したときには前記転動輪６の前記上下運動が小さくなり、この前記上下運動によって生じる前記ゴムクローラ走行装置１の振動が低減されることとなる。
【００４３】
なお、本発明は上述した実施形態に限られるものではなく以下のように種々の変形が可能である。
第４実施形態において第１ラグ１４ａの前記太さを太くしたときにはこの第１ラグ１４ａにおけるの前記帯長手方向の突端幅は前記第２ラグ１５ａの該突端幅の１０〜３０％増しに形成することが望ましいが、さらに第１ラグ周辺部１４の剛性を調整する場合には前記１０〜３０％の範囲に限らずに前記第１ラグ１４ａの前記突端幅を広く（または狭く）してもよい。
【００４４】
第８実施形態における第２ラグ周辺部１５に位置する第２ラグ１５ａは２個に限られるものではなく、２個以上であってもよい。
また、前記抗張体２６の数、太さ等を増して前記帯本体１２の剛性を高めてもよい。
ゴムクローラにおける前記ラグ１３の配列パターンは第１または第６乃至７実施形態で説明したものに限られず、ラグの配列パターンによって前記剛性の低い部分と高い部分とが形成されるようなゴムクローラであればどのようなものにでも本発明の実施が可能である。
【００４５】
【発明の効果】
以上詳述した本発明によれば、剛性の低い部分と剛性の高い部分とが形成されたゴムクローラを前記ゴムクローラ走行装置に装着して運転したときに、前記ゴムクローラ走行装置の振動を低減できる。
【図面の簡単な説明】
【図１】本発明におけるゴムクローラの第１実施形態を示す側面図である。
【図２】本発明におけるゴムクローラの第２実施形態を示す側面図である。
【図３】本発明におけるゴムクローラの第３実施形他を示す側面図である。
【図４】本発明におけるゴムクローラの第４実施形態を示す側面図である。
【図５】本発明におけるゴムクローラの第５実施形態を示す部分側面図である。
【図６】本発明におけるゴムクローラの第６実施形態を示す模式図である。
【図７】本発明におけるゴムクローラの第７実施形態を示す模式図である。
【図８】本発明におけるゴムクローラの第８実施形態を示す模式図である。
【図９】本発明におけるゴムクローラの第９実施形態を示す側面図である。
【図１０】本発明におけるゴムクローラの第１０実施形態を示す側面図である。
【図１１】本発明におけるゴムクローラの第１１実施形態を示す側面図である。
【図１２】本発明におけるゴムクローラ走行装置を示す側面図である。
【図１３】本発明におけるゴムクローラの、接地面側からみた平面図である。
【図１４】図１３におけるＣ−Ｃ矢印断面図である。
【図１５】従来のゴムクローラ走行装置を示す側面図である。
【図１６】従来のゴムクローラの、接地面側からみた平面図である。
【図１７】従来のゴムクローラおいて接地した部分を示す側面図である。
【符号の説明】
１ ゴムクローラ走行装置
２ ゴムクローラ
３ 駆動輪
５ 従動輪
６ 転動輪
１２ 帯本体
１３ ラグ
１４ 第１ラグ周辺部
１４ａ 第１ラグ
１５ 第２ラグ周辺部
１５ａ 第２ラグ
１６ 補強芯体
１８ 第１ラグの突端部（第１突端部）
１９ 第２ラグの突端部（第２突端部）
２０ 凸部
２１ 肉厚部
２２ テーパー側壁
２３ ストレート面
２４ テーパー面
α（α１、α２） テーパー角度[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rubber crawler that is attached to a vehicle that travels on a soft ground such as a combine, a transport vehicle, a snow vehicle, or a field, and a rubber crawler traveling device that is equipped with the rubber crawler.
[0002]
[Prior art]
Rubber crawler travel devices equipped with rubber crawlers are currently widely used in agricultural machines such as combines and construction work machines such as backhoes.
An example of a conventional rubber crawler traveling device is shown in FIG.
The rubber crawler traveling device 31 shown in FIG. 15 includes a rubber crawler 32, a drive sprocket 33 that is a driving wheel for driving the rubber crawler 32, a driven wheel 35 disposed in contact with the inner surface of the rubber crawler, and a rolling wheel. And a driving wheel 36.
[0003]
The rubber crawler 32 is mainly composed of a band main body 39 formed in an endless shape and a plurality of traction lugs 40 formed on the outer surface of the band main body 39.
Regarding the arrangement when the lugs 40 are formed on the band main body 39, the length of the lugs 40 in the band width direction of the band main body 39 is improved in order to improve the traction performance and the soil removal property between the lugs 40. Various arrangement patterns such as changing the length of the lug 40 to alternately arrange long lugs and short lugs, or arranging the lugs 40 in a zigzag manner in the longitudinal direction of the band body 39 are adopted. Has been.
[0004]
An example of the arrangement pattern is shown in FIG.
FIG. 16 is a plan view of the rubber crawler 32 as seen from the grounding surface side.
In the rubber crawler 32 in FIG. 16, the short lugs 41 having a short length in the band width direction and the long lugs 42 having a long length are alternately arranged in the longitudinal direction of the band main body 39 at regular intervals. It has an array pattern.
When the rubber crawler traveling device 31 equipped with the rubber crawler 32 having such an arrangement pattern is operated, when the rubber crawler 32 passes under the rolling wheel 36, the weight of the rubber crawler or the rubber crawler traveling device 31 is increased. Is pressed by the weight of a traveling machine body (not shown) to which is attached, and the pressed portion of the rubber crawler 32 is deformed downward.
[0005]
In this case, since the short lug 41 and the long lug 42 have different lengths in the width direction, the short lug peripheral portion where the short lug 41 is formed and the long lug peripheral portion where the long lug is formed More specifically, the rigidity of the peripheral part of the long lug is larger than the rigidity of the peripheral part of the short lug, and thereby, there is a difference in rigidity between the peripheral part of the short lug and the peripheral part of the long lug. It was supposed to occur.
The deformation of the rubber crawler when there is a difference in rigidity will be described with reference to FIG.
FIG. 17 shows a portion of the rubber crawler 32 that is grounded when the rubber crawler traveling device 31 is operated.
[0006]
In FIG. 17, the rubber crawler 32 that has been deformed by a solid line and the rubber crawler 32 that has not been deformed by a virtual line by a two-dot chain line is illustrated.
As described above, the grounded portion of the rubber crawler 32 is pressed downward by a load such as the weight of the rubber crawler 32 or the weight of the traveling machine body and is deformed downward.
With respect to this deformation, the deformation amount of the short lug peripheral portion is larger than the deformation amount of the long lug peripheral portion, and the difference in the deformation amount is indicated by an arrow indicated by symbol A in FIG. .)
[0007]
The deformation difference A occurs between the short lug peripheral portion and the long lug peripheral portion because the short lug is smaller in size than the long lug (the length in the band width direction is short). This is because the vertical stiffness around the short lug is smaller than the vertical stiffness around the long lug.
[0008]
[Problems to be solved by the invention]
When the deformation difference A occurs, the rolling wheels 36 move up and down by the deformation difference A, and the vertical movement causes the rubber crawler traveling device 31 to vibrate during operation.
Further, the vibration propagates to the entire traveling machine body, and if the traveling machine body vibrates, it becomes difficult for the driver to steer the traveling machine body, and the ride quality becomes uncomfortable.
[0009]
Furthermore, the vibration may cause a failure or malfunction of electronic equipment / instruments equipped in the traveling aircraft.
Therefore, in view of the above circumstances, the present invention attaches a rubber crawler formed with a low rigidity portion such as the short lug peripheral portion and a high rigidity portion such as the long lug peripheral portion to the rubber crawler traveling device. It is a first object to provide a rubber crawler that can reduce the vibration of the rubber crawler travel device when operated.
In addition to the first object described above, in the rubber crawler traveling device equipped with the rubber crawler in which the low rigidity portion and the high rigidity portion are formed, vibration during operation can be reduced. A second object is to provide a rubber crawler traveling device.
[0010]
[Means for Solving the Problems]
The present invention has taken the following technical means in order to solve the above-mentioned problems.
That is, as a first technical means, a belt main body (12) formed in an endless belt shape and the belt main body (12) are crossed and extended in the longitudinal direction of the belt. Check The lug (13) is provided, and the lug (13) is integrally formed with a protrusion in the longitudinal direction of the band body (12) in the band longitudinal direction, and the first lug peripheral part (14) having low rigidity is formed. In the rubber crawler (2) having a lug arrangement pattern in which the lugs (13) are adjacent to each other in the longitudinal direction of the belt so that a second lug peripheral portion (15) having high rigidity is formed. The lug (13) has a tapered shape that tapers from the base toward the projecting end when viewed from the side, and the tapered side wall (22) having a taper in the lug (13) and the outer surface of the band body (12). The angle of the inner angle at which the crossing and the taper shape is the taper angle (α) for making the taper shape, and the taper angle (α2) of the second lug (15a) is greater than the taper angle (α1) of the first lug (14a). And at least one outer surface of the tapered side wall (22) of the second lug (15a), a straight surface (23) extending vertically downward from the protruding end of the second lug (15a), and the straight surface ( 23) from the second lug (15a) to the base of the second lug (24a), forming a tapered surface (24) to make the second lug (15a) thinner than the first lug (14a). That is.
[0011]
As a second technical means, a band main body (12) formed in an endless band shape, and extending across the band longitudinal direction of the band main body (12). Check The lug (13) is provided, and the lug (13) is integrally formed with a protrusion in the longitudinal direction of the band body (12) in the band longitudinal direction, and the first lug peripheral part (14) having low rigidity is formed. In the rubber crawler (2) having a lug arrangement pattern in which the lugs (13) are adjacent to each other in the longitudinal direction of the belt so that a second lug peripheral portion (15) having high rigidity is formed. The lug (13) has a tapered shape that tapers from the base toward the projecting end when viewed from the side, and the tapered side wall (22) having a taper in the lug (13) and the outer surface of the band body (12). The angle of the inner angle at which the crossing and the taper shape is the taper angle (α) for forming the taper shape, and the taper angle (α1) of the first lug (14a) is determined from the taper angle (α2) of the second lug (15a). And at least one outer surface of the tapered side wall (22) of the second lug (15a), a straight surface (23) extending vertically downward from the protruding end of the second lug (15a), and the straight surface ( 23) from the second lug (15a) to the base of the second lug (24a), and the first lug (14a) is thicker than the second lug (15a). That is.
[0012]
As a third technical means, In order to increase the thickness of the first lug (14a), the base width of the first lug (14a) in the longitudinal direction of the band is made wider than the root width of the second lug (15a). That is.
As a fourth technical means, The width of the protrusion in the band longitudinal direction at the protrusion (18) of the first lug (14a) is increased by 10 to 30% of the width of the protrusion in the longitudinal direction of the protrusion (19) of the second lug (15a). It is formed That is.
As a fifth technical means, The protruding end width in the band longitudinal direction at the protruding end portion (19) of the second lug (15a) is substantially equal to the protruding end width in the band longitudinal direction at the protruding end portion (18) of the first lug (14a). That is.
[0013]
As the sixth technical means, The band main body (12) has a reinforcing core (16) provided at an internal position corresponding to each position of the lug (13), and corresponds to the interval between the reinforcing cores (16). Protrusions (20) were formed on the inner surface of the band body (12). That is.
As a seventh technical means, A band main body (12) portion corresponding to a root portion of the first lug (14a) is provided with a protrusion (20) on the inner surface portion of the band main body (12) corresponding to the interval between the second lugs (15a). The thickness of the part was formed thick, and this part was made the thick part (21) That is.
[0014]
As an eighth technical means, In order to reduce the difference in rigidity between the first lug peripheral portion (14) and the second lug peripheral portion (15), the hardness of the rubber of the band body (12) is made higher than the hardness of the lug (13). The band body (12) was formed That is.
As the ninth technical means, A rubber crawler (13), a drive wheel (3) for driving the rubber crawler (13), a driven wheel (5) and a rolling wheel (6) disposed in contact with the inner surface of the rubber crawler are provided. In the rubber crawler traveling device (1), the rubber crawler according to any one of claims 1 to 8 is used for the rubber crawler. It is.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
The rubber crawler and the rubber crawler traveling device according to the present invention are used for various machines such as agricultural machines such as combine machines, construction work machines such as backhoes, and snow vehicles.
A rubber crawler traveling device according to the present invention is shown in FIG.
The rubber crawler travel device 1 shown in FIG. 12 includes a rubber crawler 2, a drive sprocket 3 that is a drive wheel for driving the rubber crawler 2, a driven wheel 5 disposed in contact with the inner surface of the rubber crawler 2, and It is mainly composed of rolling wheels 6.
[0016]
The rubber crawler 2 is mainly composed of a rubber band main body 12 formed in an endless band shape and a plurality of rubber pulling lugs 13 formed on the outer surface of the band main body 12.
The lug 13 is substantially trapezoidal when viewed from the side, extends across the band longitudinal direction of the band body 12, and is arranged at a predetermined interval along the band longitudinal direction of the band body 12. Yes.
The arrangement pattern will be described with reference to FIG.
FIG. 13 is a plan view of the rubber crawler 2 as seen from the grounding surface side.
[0017]
As shown in FIG. 13, in the rubber crawler 2, the first lug 14a having a short length in the band width direction of the band body 12 and the second lug 15a having a long length are spaced along the longitudinal direction of the band. Alternatingly arranged, the belt body 12 is integrated with the band main body 12 to form a protrusion.
The lugs 13 having different lengths in the band width direction are arranged in this manner because mud (soil) is clogged between adjacent lugs along the band longitudinal direction, and the traction force of the lugs 13 (rubber crawler 2). This is to prevent the reduction. That is, by adopting the arrangement pattern, mud (soil) can be prevented from clogging between adjacent lugs (improvement of soil removal), and the traction force of the lugs 13 (rubber crawler 2) can be maintained. -ing
[0018]
In the center of the band main body 12 in the band width direction, an engagement hole 17 for engaging the teeth of the drive sprocket 3 is formed.
The engagement holes 17 are provided over the entire circumference of the band body 12 at a predetermined interval, and the teeth of the drive sprocket 3 are engaged with and disengaged from the engagement holes 17 so that the drive sprocket 3 is engaged. Meshes with the rubber crawler 2 so that power can be transmitted to the rubber crawler 2.
14 is a cross-sectional view of the rubber crawler 2 taken along the line CC in FIG.
[0019]
As shown in FIG. 14, the rubber crawler 2 includes a reinforcing core body 16 and a tensile body 26 such as a steel cord that restricts the expansion of the rubber crawler 2.
The reinforcing core body 16 is formed of a material such as metal or hard resin, and a plurality of reinforcing core bodies 16 are provided at the internal position of the band body 12 corresponding to the position of the lug 13. A protrusion 27 for restricting the position of the belt is provided so as to protrude toward the inner surface side of the band body 12.
The rolling wheel 6 shown in FIG. 14 is formed of a so-called MATAGARA wheel that rolls on the inner peripheral surface of the rubber crawler 2 across the protrusion 27, and the rubber crawler 2 driven by the drive sprocket 3 is The grounded portion passes under the rolling wheel 6.
[0020]
Hereinafter, a state when the rubber crawler 2 passes under the rolling wheel 6 will be described.
When the rubber crawler 2 is grounded and passes under the rolling wheel 6, the rubber crawler 2 is lowered by a load such as a weight of a traveling machine body to which the rubber crawler traveling device 1 is attached or a weight of the rubber crawler 2. Deformed by being pushed in the direction.
In the rubber crawler 2, a peripheral portion where the first lug 14a is formed (hereinafter referred to as a first lug peripheral portion 14) and a peripheral portion where the second lug 15a is formed (hereinafter referred to as a second lug peripheral portion). 15)), the amount of deformation is different.
[0021]
More specifically, the deformation amount of the first lug peripheral portion 14 is larger than the deformation amount of the second lug peripheral portion 15, and the deformation amount of the first lug peripheral portion 14 and the second lug peripheral portion There is a difference from the deformation amount of the portion 15 (hereinafter referred to as a deformation difference).
In other words, the size of the first lug 14a and the second lug 15a (the length in the band width direction) is different (the first lug 14a is smaller than the second lug 15a), and the periphery of the first lug There is a difference between the vertical rigidity of the portion 14 and the vertical rigidity of the second lug peripheral portion 15 (hereinafter referred to as a rigidity difference).
[0022]
The rolling wheel 6 moves up and down by the deformation difference caused by the rigidity difference.
This up-and-down motion is transmitted to a traveling machine body to which the rubber crawler traveling device 1 is attached as vibration of the rubber crawler traveling device 1.
The rubber crawler 2 has a novel structure that can reduce the vibration.
Hereinafter, the structure of the rubber crawler 2 will be described.
FIG. 1 shows a first embodiment of a rubber crawler according to the present invention.
[0023]
FIG. 1 is a side view showing a part of the rubber crawler 2 described in FIG.
In the first embodiment, both the first lug 14a and the second lug 15a are formed in a tapered shape that tapers (protrusions) from the root portion formed integrally with the band body 12 to the protruding end portion. The side walls before and after the longitudinal direction of the band (the direction indicated by the arrow of the symbol X. The same applies to the other drawings hereinafter) are tapered (inclined) tapered side walls 22.
The tapered side wall 22 of the second lug 15a has a straight surface 23 extending vertically downward from the protruding end of the second lug 15a, and a taper that extends from the straight surface 23 to the root portion of the second lug 15a. A surface 24 is formed.
[0024]
Here, if the angle at which the tapered side wall 22 and the outer surface of the band body 12 intersect is a taper angle α, the taper angle in the second lug 15a (hereinafter referred to as the second taper angle α2) is in the first lug 14a. It is smaller than the taper angle (hereinafter referred to as the first taper angle α1).
Thus, by making the second taper angle α2 smaller than the first taper angle α1, the thickness of the second lug 15a in the band longitudinal direction is made larger than the thickness of the first lug 14a in the band longitudinal direction. Can also be made thinner.
[0025]
The two-dot chain line shown in FIG. 1 shows the outer shape of the first lug 14a as a virtual line at the position of the second lug 15a in order to compare the thickness of the first lug 14a and the second lug 15a. (The same applies to FIGS. 2 and 3 described later).
Accordingly, the vertical rigidity of the peripheral portion where the second lug 15a is formed (hereinafter referred to as the first lug peripheral portion 14) is set to the peripheral portion where the first lug 14a is formed (hereinafter referred to as the first lug peripheral portion). It can be made smaller than the vertical rigidity of the portion 14).
[0026]
By providing the straight surface 23, the protruding end width of the second lug 15a (hereinafter referred to as the second protruding end 19) in the band longitudinal direction and the protruding end of the first lug 14a (hereinafter referred to as the first protruding end). The width of the tip of the portion 18) can be made substantially equal. At this time, it is preferable that a difference between the protruding end width of the first lug 14a and the protruding end width of the second lug 15a is in a range of about 2 to 3 mm.
In this way, when the arrangement pattern of the first lugs 14a having a relatively large thickness and the second lugs 15a having a small thickness is felt to be apparent, the width of the tip is made substantially equal. It can reduce the tingling sensation of appearance.
[0027]
Moreover, by forming the straight surface 23, the thickness of the protruding end portion of the second lug 15a in the band longitudinal direction can be increased compared to the case where the straight surface 23 is not formed. The wear life of the part can be extended.
FIG. 2 shows a second embodiment of the rubber crawler according to the present invention.
In the second embodiment, the second lug 15a does not have the straight surface 23 described in the first embodiment.
Thus, even if the straight surface 23 is not formed on the second lug 15a, the second taper angle α2 is made smaller than the first taper angle α1, thereby the second lug 15a in the longitudinal direction of the band. The thickness can be made thinner than the thickness of the first lug 14a to reduce the difference in rigidity between the first lug peripheral portion 14 and the second lug peripheral portion 15, thereby enabling the rubber crawler during operation. The vibration at the time of driving | running | working of the traveling apparatus 1 can be reduced.
[0028]
FIG. 3 shows a third embodiment of the rubber crawler according to the present invention.
In the third embodiment, the second lug 15a has the thickness of the second lug 15a by making the second taper angle α2 of the tapered side wall 22 on one side smaller than the first taper angle α1. Is made thinner than the thickness of the first lug 14 a to reduce the difference in rigidity between the first lug peripheral portion 14 and the second lug peripheral portion 15.
In the third embodiment, in the second lug 15a, the second taper angle α2 is reduced with respect to one of the front and rear tapered side walls 22 in the longitudinal direction of the band. At this time, the second lug 15a It is desirable to reduce the second taper angle α2 in the tapered side wall 22 opposite to the tapered side wall 22 having a surface kicking surface (kick surface). However, if the strength (rigidity) of the second lug 15a is sufficient Means may be provided for reducing the second taper angle α2 in the tapered side wall 22 having the kick surface.
[0029]
FIG. 4 shows a fourth embodiment of the rubber crawler according to the present invention.
In the fourth embodiment, the first taper angle α1 of the first lug 14a is larger than the second taper angle α2, and the thickness of the first lug 14a is set to the thickness of the second lug 15a. It is thicker than this.
Note that the two-dot chain line shown in FIG. 4 shows the outer shape of the second lug 15a as a virtual line at the position of the first lug 14a in order to compare the thicknesses of the first lug 14a and the second lug 15a. It is a thing.
[0030]
Accordingly, the rigidity of the first lug peripheral portion 14 can be increased and the difference in rigidity from the rigidity of the second lug peripheral portion 15 can be reduced.
By increasing the thickness of the first lug 14a, the width of the first lug 14a at the first protruding end 18 in the band width direction is the width of the second lug 15a at the second protruding end 19 in the band width direction. However, it is preferable that the protruding end width of the first lug 14a is adjusted within a range of 10 to 30% larger than the protruding end width of the second lug 15a.
[0031]
FIG. 5 shows a fifth embodiment of the rubber crawler according to the present invention. FIG. 5 is a partial side view showing the periphery of the drive wheel 35 when the rubber crawler 2 is mounted on the rubber crawler travel device 1.
The rubber crawler 2 according to the fifth embodiment is formed by making the base width of the first lug 14a in the band longitudinal direction (the width indicated by the arrow of symbol B) wider than the base width of the second lug 15a. ing.
Thus, by widening the base width of the 1st lug 14a located in the 1st lug peripheral part 14 with low rigidity, the rigidity of the 1st lug peripheral part 14 is improved, and the 2nd lug peripheral part 15 with high rigidity is provided. The difference in rigidity between the rubber crawler traveling device 1 and the operation of the rubber crawler traveling device 1 can be reduced.
[0032]
6 to 8 schematically show an arrangement pattern of lugs provided in the rubber crawler according to the present invention.
FIG. 6 shows a sixth embodiment of the rubber crawler according to the present invention.
In the first to fourth embodiments described above, the lugs 13 arranged in the band body 12 have an arrangement pattern in which straight ones are arranged along the band width direction of the band body 12. The arrangement pattern of the lugs 13 in the sixth embodiment is a U-shaped lug 13 having different lengths in the band width direction and alternately arranged in the band longitudinal direction at intervals. Yes.
[0033]
Also in the rubber crawler 2 having this arrangement pattern, the first lug peripheral portion 14 with small rigidity (large deformation amount) and the second lug peripheral portion 15 with large rigidity (small deformation amount) are formed when grounded.
Also in the rubber crawler having such an arrangement pattern, the first lug 14a and the second lug 15a are formed as described in the first to fourth embodiments, and the first lug peripheral portion 14 and the second lug peripheral portion 15 are formed. And the rigidity difference can be reduced.
FIG. 7 shows a seventh embodiment of the rubber crawler according to the present invention.
[0034]
In the seventh embodiment, instead of the second lug 15a described in the first embodiment, two lugs 13 having substantially the same length in the band width direction are formed side by side in the band width direction.
Also in the arrangement pattern shown in FIG. 7, the first lug peripheral portion 14 having a small rigidity and the second lug peripheral portion 15 having a large rigidity are formed, and the first lug located in the first lug peripheral portion 14 is formed. 14a and the second lug 15a located in the second lug peripheral portion 15 are formed as described in the first to fourth aspects, and the rigidity difference between the first lug peripheral portion 14 and the second lug peripheral portion 15 is determined. Can be small.
[0035]
FIG. 8 shows an eighth embodiment of the rubber crawler according to the present invention.
The rubber crawler 2 according to the eighth embodiment has an arrangement pattern in which lugs 13 having substantially the same length in the band width direction are arranged in a staggered manner in the band longitudinal direction of the band body 12.
The dashed-dotted line shown in FIG. 8 has shown the position (direction) where the load by the weight of the traveling machine body provided with this rubber crawler 2 is applied (the same is true of the dashed-dotted line shown in FIGS.
[0036]
In the eighth embodiment, the position where the load is applied is shifted from the center of the band body 12 in the band width direction.
As a result, the load sharing ratio of the adjacent lugs 13 changes, and the first lug peripheral portion 14 having a small rigidity and the second lug peripheral portion 15 having a large rigidity are formed as shown in FIG. .
Also in the eighth embodiment, the first lug 14a located in the first lug peripheral portion 14 and the second lug 15a located in the second lug peripheral portion 15 are formed as described in the first to fourth aspects. Then, the difference in rigidity between the first lug peripheral portion 14 and the second lug peripheral portion 15 can be reduced to reduce vibration during operation of the rubber crawler traveling device equipped with the rubber crawler 2.
[0037]
FIG. 9 shows a ninth embodiment of the rubber crawler according to the present invention.
In the ninth embodiment, a convex portion 20 for reinforcement is formed on the inner surface portion of the band body 12 corresponding to the distance between the second lugs 15a in the rubber crawler 2.
In the rubber crawler 2, the band body 12 is most easily deformed.
As in the ninth embodiment, when the convex portion 20 is provided on the inner surface portion of the band body 12 corresponding to the interval between the second lugs 15a having high rigidity, portions other than the second lug peripheral portion 15 having high rigidity are provided. That is, the rigidity of the band main body 12 portion and the first lug peripheral portion 14 having low rigidity can be increased.
[0038]
Thereby, the difference in rigidity between the second lug peripheral portion 15 and the low rigidity portion (the band main body 12 portion between the second lugs 15a and the first lug peripheral portion 14) can be reduced. Therefore, the vibration during the operation of the rubber crawler traveling device 1 equipped with 2 can be reduced.
FIG. 10 shows a tenth embodiment of a rubber crawler according to the present invention.
In the tenth embodiment, convex portions 20 are formed on the inner surface portion of the band main body 12 corresponding to the interval between the reinforcing core bodies 16.
[0039]
The peripheral portion where the reinforcing core body 16 is provided by the reinforcing core body 16 provided in the band main body 12 has a higher rigidity. However, the portion of the band main body 12 between the reinforcing core bodies 16 is the reinforcing core. The rigidity becomes lower than the peripheral portion in which the body 16 is provided.
Therefore, as shown in FIG. 10, a protrusion 20 is provided on the inner surface of the band main body 12 between the reinforcing cores 16, and the band main body between the peripheral part where the reinforcing core 16 is installed and the reinforcing cores 16. The difference in rigidity with the 12 parts can be reduced.
[0040]
This reduces the difference between the deformation amount in the vicinity of the reinforcing core body 16 and the deformation amount of the band main body 12 portion between the reinforcing core bodies 16 when the rubber crawler 2 passes through the rolling wheel 6. The vertical movement of the rolling wheel 6 can be reduced.
FIG. 11 shows an eleventh embodiment of the rubber crawler according to the present invention.
The rubber crawler 2 according to the eleventh embodiment corresponds to the distance between the first lug 14a located at the first lug peripheral portion 14 having low rigidity and the second lug 15a located at the second lug peripheral portion 15 having high rigidity. A convex portion 20 for reinforcement is formed on the inner surface portion of the belt main body 12 to be reinforced.
[0041]
Further, the thickness of the band main body 12 corresponding to the base portion of the first lug 14a is increased, and the increased thickness portion is shown as the thick portion 21.
In FIG. 11, the thickness of the portion where the thick portion 21 is not formed, that is, the thickness of the band main body 12 corresponding to the root portion of the second lug 15a is the width of the arrow E. The thick portion 21 is further thickened by the width indicated by the symbol D.
The reason for forming the convex portion 20 is as described in the tenth embodiment. However, in the eleventh embodiment, the thick portion 21 is further provided to provide a portion having low rigidity (the first lug peripheral portion 14 and the lug). The rigidity of the second lug peripheral portion 15 having a high rigidity and the low rigidity portion (the first main lug peripheral portion 14 and the band main body 12 portion between the lugs 13) are increased. The difference between the two can be reduced.
[0042]
As described above, the rubber crawler 2 can reduce the rigidity difference between the low rigidity portion and the high rigidity portion by appropriately applying the respective means described in the first to eleventh embodiments. .
Also, the rubber crawler 2 in the first to tenth embodiments has a high rigidity portion (the second lug peripheral portion 15, the reinforcing core 16 peripheral portion of the band main body 12, etc.) and a low portion (the first lug). The rigidity difference between the peripheral portion 14 and the belt main body 12 portion between the lugs, etc.) is made small. Therefore, when the rubber crawler traveling device 1 is mounted and operated with the rubber crawler 2, the rolling wheel 6 moves up and down. And the vibration of the rubber crawler traveling device 1 caused by the vertical movement is reduced.
[0043]
The present invention is not limited to the above-described embodiment, and various modifications can be made as follows.
In the fourth embodiment, when the thickness of the first lug 14a is increased, the protruding end width in the band longitudinal direction of the first lug 14a is formed to be 10 to 30% larger than the protruding end width of the second lug 15a. However, when the rigidity of the first lug peripheral portion 14 is further adjusted, the width of the protruding end of the first lug 14a may be widened (or narrowed) without being limited to the range of 10 to 30%. .
[0044]
The number of the second lugs 15a located in the second lug peripheral portion 15 in the eighth embodiment is not limited to two, and may be two or more.
Further, the number and thickness of the tensile bodies 26 may be increased to increase the rigidity of the band body 12.
The arrangement pattern of the lugs 13 in the rubber crawler is not limited to the one described in the first or sixth to seventh embodiments, and the rubber crawler is such that the low rigidity portion and the high rigidity portion are formed by the lug arrangement pattern. The present invention can be implemented with any type.
[0045]
【The invention's effect】
According to the present invention described in detail above, vibration of the rubber crawler traveling device is reduced when the rubber crawler traveling device formed with the low rigidity portion and the high rigidity portion is mounted on the rubber crawler traveling device. it can.
[Brief description of the drawings]
FIG. 1 is a side view showing a first embodiment of a rubber crawler according to the present invention.
FIG. 2 is a side view showing a second embodiment of a rubber crawler according to the present invention.
FIG. 3 is a side view showing a third embodiment of the rubber crawler according to the present invention.
FIG. 4 is a side view showing a fourth embodiment of a rubber crawler according to the present invention.
FIG. 5 is a partial side view showing a fifth embodiment of a rubber crawler according to the present invention.
FIG. 6 is a schematic view showing a sixth embodiment of the rubber crawler according to the present invention.
FIG. 7 is a schematic diagram showing a seventh embodiment of a rubber crawler according to the present invention.
FIG. 8 is a schematic view showing an eighth embodiment of a rubber crawler according to the present invention.
FIG. 9 is a side view showing a ninth embodiment of a rubber crawler according to the present invention.
FIG. 10 is a side view showing a rubber crawler according to a tenth embodiment of the present invention.
FIG. 11 is a side view showing an eleventh embodiment of a rubber crawler according to the present invention.
FIG. 12 is a side view showing a rubber crawler traveling device according to the present invention.
FIG. 13 is a plan view of a rubber crawler according to the present invention as viewed from the ground contact surface side.
14 is a cross-sectional view taken along the line CC in FIG.
FIG. 15 is a side view showing a conventional rubber crawler traveling device.
FIG. 16 is a plan view of a conventional rubber crawler when viewed from the ground contact surface side.
FIG. 17 is a side view showing a grounded portion in a conventional rubber crawler.
[Explanation of symbols]
1 Rubber crawler travel device
2 Rubber crawler
3 Drive wheels
5 driven wheels
6 Rolling wheels
12 Band body
13 rugs
14 1st lug periphery
14a 1st lug
15 Second lug periphery
15a 2nd lug
16 Reinforcement core
18 Projection end of first lug (first projection end)
19 Second lug protrusion (second protrusion)
20 Convex
21 Thick part
22 Tapered side wall
23 Straight surface
24 Tapered surface
α (α1, α2) Taper angle

Claims (9)

無端帯状に形成した帯本体（１２）と、この帯本体（１２）の帯長手方向に交差して延伸する牽引用のラグ（１３）を備え、このラグ（１３）を、前記帯本体（１２）の前記帯長手方向の間隔を有して一体に突隆形成し、剛性の低い第１ラグ周辺部（１４）と剛性の高い第２ラグ周辺部（１５）とが形成されるように、前記ラグ（１３）が前記帯長手方向に沿って隣り合うラグ配列パターンを有したゴムクローラ（２）において、
前記ラグ（１３）は側方からみて根元から突端部に向かって先細りとなるテーパー形状とされており、前記ラグ（１３）におけるテーパーのついたテーパー側壁（２２）と帯本体（１２）の外面とが交差したところの内角の角度を前記テーパー形状とするためのテーパー角度（α）とし、第２ラグ（１５ａ）のテーパー角度（α２）を第１ラグ（１４ａ）のテーパー角度（α１）よりも小さくして第２ラグ（１５ａ）の太さを第１ラグ（１４ａ）よりも細くし、かつ前記第２ラグ（１５ａ）のテーパー側壁（２２）の少なくとも１外面に、第２ラグ（１５ａ）の突端部から鉛直下方に沿ったストレート面（２３）と、このストレート面（２３）から第２ラグ（１５ａ）の根元に向かって末広がりとなるテーパー面（２４）とを形成したことを特徴とするゴムクローラ。A band body (12) formed in an endless belt, provided with a lug (13) of the strip longitudinal direction intersecting 牽 reference you stretching of the strip body (12), the lug (13), said band body ( 12) and projecting integrally with an interval in the longitudinal direction of the belt so that a first lug peripheral portion (14) having a low rigidity and a second lug peripheral portion (15) having a high rigidity are formed. In the rubber crawler (2) having the lug arrangement pattern in which the lugs (13) are adjacent along the longitudinal direction of the belt,
The lug (13) has a tapered shape that tapers from the base toward the protruding end when viewed from the side, and the tapered side wall (22) and the outer surface of the band body (12) in the lug (13). The angle of the inner angle at which the crossing and the taper shape is the taper angle (α) for making the taper shape, and the taper angle (α2) of the second lug (15a) is greater than the taper angle (α1) of the first lug (14a). The second lug (15a) is made thinner than the first lug (14a), and the second lug (15a) is formed on at least one outer surface of the tapered side wall (22) of the second lug (15a). ) Formed a straight surface (23) extending vertically downward from the projecting end portion, and a tapered surface (24) extending from the straight surface (23) toward the root of the second lug (15a). Special Rubber crawler to be. 無端帯状に形成した帯本体（１２）と、この帯本体（１２）の帯長手方向に交差して延伸する牽引用のラグ（１３）を備え、このラグ（１３）を、前記帯本体（１２）の前記帯長手方向の間隔を有して一体に突隆形成し、剛性の低い第１ラグ周辺部（１４）と剛性の高い第２ラグ周辺部（１５）とが形成されるように、前記ラグ（１３）が前記帯長手方向に沿って隣り合うラグ配列パターンを有したゴムクローラ（２）において、
前記ラグ（１３）は側方からみて根元から突端部に向かって先細りとなるテーパー形状とされており、前記ラグ（１３）におけるテーパーのついたテーパー側壁（２２）と帯本体（１２）の外面とが交差したところの内角の角度を前記テーパー形状とするためのテーパー角度（α）とし、第１ラグ（１４ａ）のテーパー角度（α１）を第２ラグ（１５ａ）のテーパー角度（α２）よりも大きくして第１ラグ（１４ａ）の太さを第２ラグ（１５ａ）よりも太くし、かつ前記第２ラグ（１５ａ）のテーパー側壁（２２）の少なくとも１外面に、第２ラグ（１５ａ）の突端部から鉛直下方に沿ったストレート面（２３）と、このストレート面（２３）から第２ラグ（１５ａ）の根元に向かって末広がりとなるテーパー面（２４）とを形成したことを特徴とするゴムクローラ。A band body (12) formed in an endless belt, provided with a lug (13) of the strip longitudinal direction intersecting 牽 reference you stretching of the strip body (12), the lug (13), said band body ( 12) and projecting integrally with an interval in the longitudinal direction of the belt so that a first lug peripheral portion (14) having a low rigidity and a second lug peripheral portion (15) having a high rigidity are formed. In the rubber crawler (2) having the lug arrangement pattern in which the lugs (13) are adjacent along the longitudinal direction of the belt,
The lug (13) has a tapered shape that tapers from the base toward the protruding end when viewed from the side, and the tapered side wall (22) and the outer surface of the band body (12) in the lug (13). The angle of the inner angle at which the crossing and the taper shape is the taper angle (α) for forming the taper shape, and the taper angle (α1) of the first lug (14a) is determined from the taper angle (α2) of the second lug (15a). The first lug (14a) is thicker than the second lug (15a), and the second lug (15a) is formed on at least one outer surface of the tapered side wall (22) of the second lug (15a). ) Formed a straight surface (23) extending vertically downward from the projecting end portion, and a tapered surface (24) extending from the straight surface (23) toward the root of the second lug (15a). Special Rubber crawler to be. 前記第１ラグ（１４ａ）の太さを太くするためにこの第１ラグ（１４ａ）の帯長手方向の根元幅を前記第２ラグ（１５ａ）の根元幅よりも広くしたことを特徴とする請求項２に記載のゴムクローラ。 In order to increase the thickness of the first lug (14a), the base width in the longitudinal direction of the band of the first lug (14a) is made wider than the root width of the second lug (15a). The rubber crawler according to claim 2. 前記第１ラグ（１４ａ）の突端部（１８）における前記帯長手方向の突端幅が前記第２ラグ（１５ａ）の突端部（１９）における前記帯長手方向の突端幅の１０〜３０％増しに形成されることを特徴とする請求項２または３に記載のゴムクローラ。 The width of the protrusion in the band longitudinal direction at the protrusion (18) of the first lug (14a) is increased by 10 to 30% of the width of the protrusion in the longitudinal direction of the protrusion (19) of the second lug (15a). The rubber crawler according to claim 2 , wherein the rubber crawler is formed. 前記第２ラグ（１５ａ）の突端部（１９）における前記帯長手方向の突端幅は前記第１ラグ（１４ａ）の突端部（１８）における前記帯長手方向の突端幅と略等しくされていることを特徴とする請求項１から３のいずれかに記載のゴムクローラ。 The width of the protrusion in the longitudinal direction of the band at the protrusion (19) of the second lug (15a) is substantially equal to the width of the protrusion in the longitudinal direction of the protrusion (18) of the first lug (14a). The rubber crawler according to any one of claims 1 to 3 . 前記帯本体（１２）は、前記ラグ（１３）のそれぞれの位置に対応した内部位置に内設された補強芯体（１６）を有し、
前記補強芯体（１６）同士の間隔に対応する前記帯本体（１２）の内面部分に凸部（２０）を形成したことを特徴とする請求項１から５のいずれかに記載のゴムクローラ。 The band body (12) has a reinforcing core (16) provided in an internal position corresponding to each position of the lug (13),
The rubber crawler according to any one of claims 1 to 5 , wherein a convex portion (20) is formed on an inner surface portion of the band main body (12) corresponding to an interval between the reinforcing core bodies (16) . 前記第２ラグ（１５ａ）同士の間隔に対応する前記帯本体（１２）の内面部分に凸部（２０）を設け、
前記第１ラグ（１４ａ）の根元部分に対応する帯本体（１２）部分の厚さを厚く形成し、この部分を厚肉部（２１）としたことを特徴とする請求項１から６のいずれかに記載のゴムクローラ。 Protruding portions (20) are provided on the inner surface portion of the band body (12) corresponding to the interval between the second lugs (15a),
The band main body (12) portion corresponding to the root portion of the first lug (14a) is formed thick, and this portion is a thick portion (21). rubber crawler according to any. 前記第１ラグ周辺部（１４）と前記第２ラグ周辺部（１５）との前記剛性の差を小さくするために前記帯本体（１２）のゴムの硬度を前記ラグ（１３）の硬度より高めて帯本体（１２）を形成したことを特徴とする請求項１から７のいずれかに記載のゴムクローラ。 In order to reduce the difference in rigidity between the first lug peripheral portion (14) and the second lug peripheral portion (15), the hardness of the rubber of the band body (12) is made higher than the hardness of the lug (13). The rubber crawler according to any one of claims 1 to 7 , wherein a belt main body (12) is formed . ゴムクローラ（１３）と、このゴムクローラ（１３）を駆動するための駆動輪（３）と、前記ゴムクローラの内面に接して配設される従動輪（５）および転動輪（６）を備えたゴムクローラ走行装置（１）において、A rubber crawler (13), a drive wheel (3) for driving the rubber crawler (13), a driven wheel (5) and a rolling wheel (6) disposed in contact with the inner surface of the rubber crawler are provided. In the rubber crawler traveling device (1),
前記ゴムクローラに請求項１から８のいずれかに記載のゴムクローラを用いたことを特徴とするゴムクローラ走行装置。  9. A rubber crawler traveling device using the rubber crawler according to claim 1 as the rubber crawler.
JP2001147031A 2001-05-16 2001-05-16 Rubber crawler and rubber crawler traveling device Expired - Fee Related JP3619169B2 (en)

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TW091106697A TW537987B (en) 2001-05-16 2002-04-03 Gum crawler and gum crawler moving device
KR1020020026894A KR100638885B1 (en) 2001-05-16 2002-05-15 Rubber crawler and rubber crawler travelling apparatus
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