JP2005041243A - Elastic endless crawler belt travel device - Google Patents

Elastic endless crawler belt travel device Download PDF

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Publication number
JP2005041243A
JP2005041243A JP2003199658A JP2003199658A JP2005041243A JP 2005041243 A JP2005041243 A JP 2005041243A JP 2003199658 A JP2003199658 A JP 2003199658A JP 2003199658 A JP2003199658 A JP 2003199658A JP 2005041243 A JP2005041243 A JP 2005041243A
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Japan
Prior art keywords
crawler belt
endless crawler
elastic endless
equalizer
wheels
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Pending
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JP2003199658A
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Japanese (ja)
Inventor
Toru Sakai
透 坂井
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Yanmar Agribusiness Co Ltd
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Seirei Industry Co Ltd
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Publication date
Application filed by Seirei Industry Co Ltd filed Critical Seirei Industry Co Ltd
Priority to JP2003199658A priority Critical patent/JP2005041243A/en
Publication of JP2005041243A publication Critical patent/JP2005041243A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To solve those problems that the traction force is reduced, and vibrations and noises are generated regarding an elastic endless crawler belt travel device which is applied to an agricultural tractor and so forth. <P>SOLUTION: The right and left rolling wheels of an equalizer in this elastic endless crawler belt travel device are provided in a manner to be positionally shifted in the crawler belt moving direction. The positional shift dimension is set 1/2 to the burial pitch of a core bar which is buried in the crawler belt. Also, a removal preventing protuberance which is formed on the core bar is moved between the right and left rolling wheels of the equalizer which is provided in a manner to be positionally shifted in the crawler belt moving direction. In addition, on the wound internal surface side of the crawler belt, ridges are formed on the right and left external sides of the removal preventing protuberance, and also, at right and left side areas of an engaging hole with which the teeth of a driving sprocket are engaged, and the right and left rolling wheels of the equalizer which are positionally shifted in the crawler belt moving direction are made to tread and roll on the ridges. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、農用トラクタ等に適用される弾性履帯走行装置に関する。
【0002】
【従来の技術】
従来、駆動スプロケットの歯部が係合する噛合孔群と、相隣る噛合孔の間の部位に埋設される芯金群とを備えた弾性無端履帯を、前後の誘導輪と両誘導輪間の上部に位置する駆動スプロケットとに側面視三角形状に掛回し、掛回された弾性無端履帯の接地側内面に対応させてイコライザ構造の転輪群を設けた弾性無端履帯走行装置が知られるが、従来の弾性無端履帯走行装置においてはイコライザの左右(内外)転輪が、弾性無端履帯の移行方向において同じ位相位置に設けられていた(例えば、特許文献1参照)。
【0003】
【特許文献1】
特開2002−37153号公報(図1、図4、図6〜図8)
【0004】
【発明が解決しようとする課題】
従来の弾性無端履帯走行装置においてはイコライザの左右(内外)転輪が弾性無端履帯の移行方向において同じ位相位置に設けられていたから、駆動スプロケットの歯部と噛合孔の係合によって弾性無端履帯が回動移行される際に、イコライザの左右転輪が、弾性無端履帯に埋設されている芯金と芯金の間の部分に対応位置すると、イコライザの左右転輪が同時に芯金のない部分に落ち込むことになり、その落込みのために弾性無端履帯の屈曲が発生して地面とクロ−ラ間に滑りを生じさせ牽引力を低下させるとか、振動や騒音を発生させるといった問題があった。本発明は、このような問題を解消することを目的とする。
【0005】
【課題を解決するための手段】
そして、目的を達成する為に、本発明に係る弾性履帯走行装置は、駆動スプロケットの歯ピッチに合致する間隔で開設された噛合孔群と、相隣る噛合孔の間の部位に埋設されて群列する芯金群とを備えた弾性無端履帯を、トラックフレ−ムに設けられた誘導輪と駆動スプロケットとに掛回し、掛回された弾性無端履帯の接地側内面に対応させてイコライザ構造の転輪群を設けた弾性無端履帯走行装置において、イコライザの内側転輪と外側転輪とを弾性無端履帯の移行方向に位置齟齬させて設け、また、その位置齟齬寸法を芯金群の埋設ピッチに対し略1/2になるように設定したものである。
【0006】
また、弾性無端履帯に埋設された芯金のそれぞれが弾性無端履帯の掛回内方に突出する左右一対の外れ防止突起を備え、左右列状となる外れ防止突起群が、弾性無端履帯移行方向に位置齟齬して設けられているイコライザの内側転輪と外側転輪との間を移行するように構成することによって、イコライザの内側転輪と外側転輪とを弾性無端履帯の移行方向に位置齟齬させて設けながら、弾性無端履帯が接地側において履帯横幅方向に外れることがないようにしている。
【0007】
また、駆動スプロケットの歯ピッチに合致する間隔で開設された噛合孔群と、相隣る噛合孔の間の部位に埋設されて群列する芯金とを備え、群列する芯金の各々が掛回内方に突出する左右一対の外れ防止突起を有し、その防止突起よりも左右外側で各噛合孔の左右横側部位に位置する隆起部が掛回内面側に形設されている弾性無端履帯を、誘導輪と駆動スプロケットとに掛回し、弾性無端履帯の移行方向に位置齟齬して設けられるイコライザの内側転輪と外側転輪とが、弾性無端履帯の接地側において前記隆起部群を踏圧転動するように構成することによって、芯金のない部分でのイコライザの転輪の落込み度合いを一層少なからしめるようにしている。
【0008】
【発明の実施の形態】
つぎに、実施の形態について図面を参照して説明するが、図1は本発明に係る弾性無端履帯走行装置を採用している農用トラクタの全体側面図、図2はその要部を抽出し拡大した側面図、図3は要部を一部破断して示した平面図、図4は弾性無端履帯の一部を拡大し部分破断して示した側面図、図5は弾性無端履帯の掛回内側部分を示す拡大平面図、図6は弾性無端履帯の断面正面図である。
【0009】
図1において農用トラクタは、左右一対の弾性無端履帯走行装置(10)(10)に支持された車体フレ−ム(11)上にエンジン部(12)と運転部(13)を設けるとともに、車体フレ−ム(11)の後部に油圧機構によって昇降作動する作業機連結装置(14)を設け、前記エンジン部(12)の出力軸から伝達される動力で左右一対の弾性無端履帯走行装置(10)(10)、及び作業機連結装置(14)に装着されるロ−タリ耕耘装置等の各種駆動作業機(図示省略)を駆動して走行し作業できるように構成されている。
【0010】
なお、図1中の(15)は運転部のステアリングハンドル、(16)は運転部の座席、(17)は作業機連結装置のトップリンク、(18)は作業機連結装置のロアリンク、(19)はリフトリンク、(20)は駆動作業機の入力部に動力伝達するPTO部である。
【0011】
しかして、前記左右一対の弾性無端履帯走行装置(10)(10)に本発明が施されるのであるが、当該走行装置(10)(10)は左右対称で共に同様の構成になるものであるので、以下においては左側の弾性無端履帯走行装置(10)のみについて説明する。
【0012】
弾性無端履帯走行装置(10)は、車体フレ−ム(11)の下側に連設されたトラックフレ−ム(21)の前端部及び後端部に枢支した誘導輪(22)(23)と、前後の誘導輪(22)(23)の間でかつ上方に配設した駆動スプロケット(24)とに弾性無端履帯(25)を側面視三角形状に掛回し、同履帯(25)の下側掛回部分(接地部分)の掛回内面に接して転動する内外二列の転輪(26A)(26B)、(27A)(27B)、(28A)(28B)群を前記トラックフレ−ム(21)に配設して構成されており、上記の前部誘導輪(22)を位置調節機構(29)の操作でもって前後方向に進退させることにより、弾性無端履帯(25)を適宜に緊張弛緩できるようになっている。
【0013】
また、弾性無端履帯(25)はゴム等の弾性材を無端帯状体に成型して形成される(図1参照)のであるが、その無端帯状体の横幅方向中央部分には前記駆動スプロケット(24)の歯ピッチに合致する間隔で開口される噛合孔(30)・・群が無端帯状体の長さ方向(履帯移行方向)に列状に設けられるとともに、相隣る噛合孔(30)(30)の間の部分にはそれぞれ芯金(31)が埋設されて、これらの芯金(31)が埋設ピッチ(P)で群列するものとなっている(図4〜図6参照)。
そして、各々の芯金(31)には、無端帯状体の掛回内方側に起立突出する左右の外れ防止突起(31a)(31a)が一体に形設されている。
【0014】
なお、(32)・・・は無端帯状体の掛回外周面に一体に形設されているラグであり、これらのラグ(32)・・・は前記芯金(31)埋設部位の外側に設けられている。また、(33)・・・は無端帯状体の掛回内面側に形設されている隆起部であり、該隆起部(33)はラグ(32)及び外れ防止突起(31a)(31a)に対して履帯移行方向に位置ずれし、外れ防止突起(31a)(31a)よりも左右の外側で前記各噛合孔(30)の左右横側部位に形成されて左右列状に並ぶものとなっている。また、(34)・・・は無端帯状体の外側縁部を一定間隔置きに凹欠させて形成した泥抜き凹部であり、該泥抜き凹部(34)は、弾性無端履帯(25)に堆積せんとする泥土等を抜き逃がしてその堆積を防止する役目を果すものである。
【0015】
このように形成された弾性無端履帯(25)は、先にも記述したように、誘導輪(22)(23)と駆動スプロケット(24)とに側面視三角形状に掛回されるのであるが、この際、誘導輪(22)(23)及び駆動スプロケット(24)は左右列状に並んだ外れ防止突起(31a)(31a)の間に挟まれて回転する状態となり、回転する駆動スプロケット(24)の歯部が、順次、弾性無端履帯(25)の噛合孔(30)・・・に係合して行くことによって弾性無端履帯(25)が強制回転されるのである。
【0016】
そして、回転移行する弾性無端履帯(25)の接地部分の掛回内面に前述した内外二列の転輪(26A)(26B)、(27A)(27B)、(28A)(28B)群が遊転状態に接するのであるが、これらの転輪(26A)(26B)、(27A)(27B)、(28A)(28B)は、左右二列の外れ防止突起(31a)(31a)を間に挟むように位置して、各輪の外周面が左右列状に並ぶ前記隆起部(33)(33)群を踏圧しながら転動するものとなっている。
【0017】
また、前記転輪(26A)(26B)、(27A)(27B)、(28A)(28B)群にはイコライザ構造で設けられるものが含まれるのであり、図示の実施例においては、左右一対の転輪、3組を前記の誘導輪(22)(23)間に配設し、後方2組の転輪(27A)(27B)、(28A)(28B)をイコライザ構造で設けている(図1参照)。
【0018】
前記イコライザの具体的な構成は、図2及び図3に拡大して示している。図2及び図3において、前後方向(履帯移行方向)に長い支持体(35)の前後方向の中央上部に取付部(36)を一体的に形成して、その取付部(36)をトラックフレ−ム(11)に設けた左右横向きの揺動支軸(38)にゴムブッシュ(37)等の緩衝部材を介しながら回動自在に枢支し、該揺動支軸(38)を支点として前記支持体(35)がシ−ソ−状に上下揺動し得るようになされている。
【0019】
なお、支持体(35)のシ−ソ−状の上下揺動は、図示を省略しているストッパ−と支持体(35)との干渉による等、適宜の規制手段でもって定められた範囲内で行われるようにしてあり、設定範囲内でシ−ソ−状に上下揺動する支持体(35)の前端部には前方の左右(内外)転輪(27A)(27B)が、また、後端部には後方の左右(内外)転輪(28A)(28B)が遊転状態に設けられる。
【0020】
そして、イコライザにおける前後の内側転輪(27A)(28A)と外側転輪(27B)(28B)とは、図2及び図3に示すように、前記弾性無端履帯(25)の移行方向に位置齟齬させて設けられ、その位置齟齬寸法が前記芯金(31)群の埋設ピッチ(P)に対して略1/2になるように設定してある。
【0021】
なお、内側転輪(27A)(28A)と外側転輪(27B)(28B)の前後方向位置齟齬寸法(相対変位寸法)は、場合により適宜変えられてよいものであり、又、図示の例では、内側転輪(27A)(28A)と外側転輪(27B)(28B)とを前後に位置齟齬させるに、前後の外側転輪(27B)(28B)の軸間距離に対して前後の内側転輪(27A)(28A)の軸間距離が狭まる方向に変位させた配置構成としているが、場合によれば前記とは内外逆の配置構成でもよく、また、前後の外側転輪(27B)(28B)の軸間距離と前後の内側転輪(27A)(28A)の軸間距離を等しく保ちながら外側転輪(27B)(28B)若しくは内側転輪(27A)(28A)の何れかを、他に対して前後に変位配置する構成にするなど、必要に応じて適宜に位置設定すればよい。
【0022】
【発明の効果】
本発明によれば、次のような効果が得られる。
【0023】
駆動スプロケット(24)の歯ピッチに合致する間隔で開設された噛合孔(30)群と、相隣る噛合孔(30)(30)の間の部位に埋設されてピッチ(P)で群列する芯金(31)群とを備えた弾性無端履帯(25)を、トラックフレ−ム(21)に設けられた誘導輪(22)(23)と駆動スプロケット(24)とに掛回して、掛回された弾性無端履帯(25)の接地側内面に対応させてイコライザ構造の転輪群を設けた弾性無端履帯走行装置において、イコライザの内側転輪(27A)(28A)と外側転輪(27B)(28B)とを弾性無端履帯(25)の移行方向に位置齟齬させて設け、その際、位置齟齬寸法を芯金(31)群の埋設ピッチ(P)に対して略1/2になるように設定してあるので、弾性無端履帯(25)が回動移行する際には、常にイコライザの内側転輪(27A)(28A)と外側転輪(27B)(28B)のいずれかが芯金(31)埋設部分に対応位置することとなって、相隣る芯金(31)(31)間に転輪が落ち込むことが少なくなり、弾性無端履帯の屈曲が発生して地面とクロ−ラ間に滑りを生じさせ牽引力を低下させるとか、振動や騒音を発生させるといった不具合が低減される。
【0024】
また、弾性無端履帯(25)に埋設された芯金(31)の各々が弾性無端履帯(25)の掛回内方に突出する左右一対の外れ防止突起(31a)(31a)を備え、左右列状となる外れ防止突起(31a)(31a)群が、弾性無端履帯(25)の移行方向に位置齟齬して設けられているイコライザの内側転輪(27A)(28A)と外側転輪(27B)(28B)との間を移行するように構成したことにより、イコライザの内側転輪と外側転輪とが弾性無端履帯移行方向に位置齟齬して設けられるものであるに拘らず、弾性無端履帯が接地側において左右横方向にずれ外れることが的確に防止される。
【0025】
また、駆動スプロケット(24)の歯ピッチに合致する間隔で開設された噛合孔(30)群と、相隣る噛合孔(30)(30)の間の部位に埋設されてピッチ(P)で群列する芯金(31)とを備え、芯金(31)の各々が掛回内方に突出する左右一対の外れ防止突起(31a)(31a)を有し、その防止突起(31a)(31a)よりも左右外側で各噛合孔(30)の左右横側部位に位置する隆起部(33)が掛回内面側に形設された弾性無端履帯(25)を、誘導輪(22)(23)と駆動スプロケット(24)とに掛回して、弾性無端履帯(25)の移行方向に位置齟齬して設けられるイコライザの転輪(27A)(28A)、(27B)(28B)が、弾性無端履帯(25)の接地側において前記隆起部(33)群を踏圧転動するように構成したことにより、相隣る芯金(31)(31)の間の部分(芯金のない部分)にイコライザの転輪が対応位置した際の同転輪の落ち込みが一層に少なくなって、弾性無端履帯の屈曲に起因する滑りや、振動、騒音の発生を益々低減できる。
【図面の簡単な説明】
【図1】本発明に係る弾性無端履帯走行装置を実施した農用トラクタの全体側面図。
【図2】要部を抽出し拡大した側面図。
【図3】要部を一部破断して示した平面図。
【図4】弾性無端履帯の一部を拡大し部分破断して示した側面図。
【図5】弾性無端履帯の掛回内側部分を示す拡大平面図。
【図6】弾性無端履帯の断面正面図。
【符号の説明】
21 トラックフレ−ム
22 誘導輪
23 誘導輪
24 駆動スプロケット
25 弾性無端履帯
27A 内側転輪
28A 内側転輪
27B 外側転輪
28B 外側転輪
30 噛合孔
31 芯金
31a 外れ防止突起
33 隆起部
P ピッチ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elastic crawler belt traveling apparatus applied to agricultural tractors and the like.
[0002]
[Prior art]
Conventionally, an elastic endless crawler belt having a meshing hole group with which teeth of a drive sprocket engage and a core metal group embedded in a portion between adjacent meshing holes is provided between the front and rear guide wheels and both guide wheels. An elastic endless crawler traveling device is known in which a drive sprocket located at the top of the belt is hooked in a triangular shape in a side view and provided with a group of wheels having an equalizer structure corresponding to the inner surface of the grounded elastic endless crawler belt. In the conventional elastic endless crawler traveling device, the left and right (inside and outside) rollers of the equalizer are provided at the same phase position in the transition direction of the elastic endless crawler belt (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-37153 (FIGS. 1, 4, and 6 to 8)
[0004]
[Problems to be solved by the invention]
In the conventional elastic endless crawler traveling device, the left and right (inner and outer) wheels of the equalizer are provided at the same phase position in the transition direction of the elastic endless crawler, so that the elastic endless crawler is rotated by the engagement of the teeth of the drive sprocket and the meshing hole. When the left and right wheels of the equalizer are positioned corresponding to the portion between the metal core and the metal core embedded in the elastic endless crawler, the left and right wheels of the equalizer simultaneously fall into the portion without the metal core. As a result, the endless crawler belt is bent due to the drop, causing slippage between the ground and the crawler to reduce the traction force, and generating vibration and noise. An object of the present invention is to solve such problems.
[0005]
[Means for Solving the Problems]
In order to achieve the object, the elastic crawler belt traveling device according to the present invention is embedded in a portion between the meshing hole group opened at intervals matching the tooth pitch of the drive sprocket and the adjacent meshing holes. An elastic endless crawler belt having a group of core bars is hung on a guide wheel provided on a track frame and a drive sprocket, and an equalizer structure corresponding to the grounded inner surface of the wound elastic endless crawler belt In an elastic endless crawler traveling device provided with a group of rollers, the inner and outer wheels of the equalizer are positioned in the transition direction of the elastic endless crawler, and the position of the core is embedded in the core metal group. It is set so as to be approximately 1/2 with respect to the pitch.
[0006]
Each of the core bars embedded in the elastic endless crawler track has a pair of left and right disconnection prevention projections protruding inwardly of the elastic endless crawler track, and a group of release prevention projections that form a left and right row is in the elastic endless crawler transition direction. By positioning the equalizer between the inner roller and the outer roller of the equalizer that is positioned at the position of the equalizer, the inner roller and the outer roller of the equalizer are positioned in the transition direction of the elastic endless crawler belt. The elastic endless crawler belt is prevented from coming off in the crawler belt width direction on the ground contact side while being provided with a heel.
[0007]
In addition, a group of meshing holes established at intervals matching the tooth pitch of the drive sprocket, and a cored bar embedded in a region between adjacent meshing holes, each of the grouped cored bar includes Elasticity with a pair of left and right detachment prevention protrusions protruding inwardly on the hook, and a ridge located on the left and right lateral portions of each meshing hole on the left and right outside of the prevention protrusion is formed on the inner surface side of the hook An endless crawler belt hangs around the guide wheel and the drive sprocket, and the inner and outer rollers of the equalizer provided to be positioned in the transition direction of the elastic endless crawler track are the raised portions on the grounding side of the elastic endless crawler belt. Is configured so as to roll on the treading pressure, so that the degree of dropping of the equalizer wheel in the portion without the core metal is further reduced.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment will be described with reference to the drawings. FIG. 1 is an overall side view of an agricultural tractor adopting the elastic endless crawler traveling device according to the present invention, and FIG. FIG. 3 is a plan view showing a partially broken main portion, FIG. 4 is a side view showing a partially enlarged and partially broken elastic endless crawler belt, and FIG. 5 is a drawing of the elastic endless crawler belt. FIG. 6 is an enlarged plan view showing the inner portion, and FIG. 6 is a sectional front view of the elastic endless crawler belt.
[0009]
In FIG. 1, an agricultural tractor is provided with an engine part (12) and a driving part (13) on a vehicle body frame (11) supported by a pair of left and right elastic endless crawler traveling devices (10) and (10). A work machine coupling device (14) that is moved up and down by a hydraulic mechanism is provided at the rear portion of the frame (11), and a pair of left and right elastic endless crawler traveling devices (10) are transmitted by the power transmitted from the output shaft of the engine unit (12). ) (10), and various drive work machines (not shown) such as a rotary tillage device mounted on the work machine connection device (14) are driven to run and work.
[0010]
1, (15) is the steering handle of the driving unit, (16) is the seat of the driving unit, (17) is the top link of the work implement coupling device, (18) is the lower link of the work implement coupling device, ( 19) is a lift link, and (20) is a PTO section that transmits power to the input section of the drive work machine.
[0011]
Thus, the present invention is applied to the pair of left and right elastic endless crawler traveling devices (10) and (10). The traveling devices (10) and (10) are symmetrical and have the same configuration. Therefore, only the left elastic endless crawler traveling device (10) will be described below.
[0012]
The elastic endless crawler traveling device (10) includes guide wheels (22) and (23) pivotally supported at a front end portion and a rear end portion of a track frame (21) continuously provided on a lower side of the vehicle body frame (11). ) And a drive sprocket (24) disposed between the front and rear guide wheels (22) and (23) and above the elastic endless crawler belt (25) in a triangular shape in side view, Two groups of inner and outer rolling wheels (26A) (26B), (27A) (27B), (28A) (28B) that roll in contact with the inner surface of the lower hooking portion (grounding portion) are connected to the track frame. -The elastic endless crawler belt (25) is configured by moving the front guide wheel (22) in the front-rear direction by operating the position adjusting mechanism (29). Tension can be relaxed as appropriate.
[0013]
Further, the elastic endless crawler belt (25) is formed by molding an elastic material such as rubber into an endless belt-like body (see FIG. 1). The drive sprocket (24 ) Are formed in rows in the length direction of the endless belt (crawler belt transition direction), and adjacent mesh holes (30) (30) ( 30), the metal cores (31) are embedded in the respective portions, and these metal cores (31) are arranged in groups at the embedded pitch (P) (see FIGS. 4 to 6).
Each cored bar (31) is integrally formed with left and right detachment prevention protrusions (31a) (31a) that stand up and protrude inwardly on the endless belt-like body.
[0014]
In addition, (32) ... is a lug integrally formed on the hanging outer peripheral surface of the endless belt-like body, and these lugs (32) ... are outside the core metal (31) embedded part. Is provided. Further, (33) is a raised portion formed on the inner surface side of the endless belt-like body, and the raised portion (33) is formed on the lug (32) and the detachment preventing protrusion (31a) (31a). On the other hand, it is displaced in the crawler belt transition direction, and is formed in the left and right lateral portions of the respective meshing holes (30) outside the left and right sides of the detachment prevention protrusions (31a) and (31a) and arranged in a left and right row. Yes. In addition, (34) is a mud recess formed by recessing the outer edge of the endless belt at regular intervals. The mud recess (34) is deposited on the elastic endless track (25). It plays the role of preventing the accumulation of mud by removing the mud.
[0015]
As described above, the elastic endless crawler belt (25) formed in this way is looped around the guide wheels (22) and (23) and the drive sprocket (24) in a triangular shape in side view. At this time, the guide wheels (22) and (23) and the drive sprocket (24) are sandwiched between the anti-protrusion protrusions (31a) and (31a) arranged in the left and right rows to rotate, and the drive sprocket ( The elastic endless crawler belt (25) is forcibly rotated by the tooth portions of 24) sequentially engaging with the meshing holes (30) of the elastic endless crawler belt (25).
[0016]
Then, the aforementioned inner and outer two rows of rolling wheels (26A) (26B), (27A) (27B), (28A) and (28B) are idled on the inner surface of the grounding portion of the elastic endless crawler belt (25) which is rotated. These wheels (26A) (26B), (27A) (27B), (28A) (28B) are in contact with the rolling state, and the two rows of left and right separation prevention projections (31a) (31a) are interposed between them. It is positioned so as to be sandwiched, and the outer peripheral surface of each wheel rolls while stepping on the group of raised portions (33) (33) arranged in the left and right rows.
[0017]
Further, the rollers (26A) (26B), (27A) (27B), (28A) (28B) groups include those provided with an equalizer structure. In the illustrated embodiment, a pair of left and right wheels are included. Three sets of rolling wheels are arranged between the guide wheels (22) and (23), and two sets of rear wheels (27A) (27B), (28A) and (28B) are provided with an equalizer structure (see FIG. 1).
[0018]
A specific configuration of the equalizer is shown in an enlarged manner in FIGS. 2 and 3, a mounting portion (36) is integrally formed at the center upper portion in the front-rear direction of the support (35) that is long in the front-rear direction (crawler belt transition direction), and the mounting portion (36) is formed into a track frame. A pivoting support shaft (38) provided on the left and right side of the turret (11) is pivotally supported through a buffer member such as a rubber bush (37), and the swinging support shaft (38) is used as a fulcrum. The support (35) can swing up and down like a seesaw.
[0019]
It should be noted that the seesaw-like vertical swing of the support (35) is within a range determined by appropriate restricting means such as interference between a stopper (not shown) and the support (35). The front left and right (inside / outside) rollers (27A) and (27B) are also provided at the front end of the support body (35) that swings up and down like a saw within the set range. Rear left and right (inside / outside) rollers (28A) (28B) are provided in the idle state at the rear end.
[0020]
The front and rear inner wheels (27A) (28A) and outer wheels (27B) (28B) in the equalizer are positioned in the transition direction of the elastic endless crawler belt (25), as shown in FIGS. It is provided so as to be heeled, and its position 齟齬 dimension is set to be approximately ½ with respect to the embedded pitch (P) of the core metal (31) group.
[0021]
In addition, the front-rear direction position 齟齬 dimension (relative displacement dimension) of the inner rollers (27A) (28A) and the outer rollers (27B) (28B) may be appropriately changed according to circumstances, and an example shown in the figure. Then, in order to position the inner rollers (27A) (28A) and the outer rollers (27B) (28B) in the front-rear direction, the front-rear distance between the front and rear outer wheels (27B) (28B) is less The inner rollers (27A) and (28A) are displaced in the direction in which the distance between the axes is reduced. However, depending on the case, the inner and outer wheels (27B) may be arranged opposite to the above. ) (28B) Either the outer wheel (27B) (28B) or the inner wheel (27A) (28A) while maintaining the same distance between the shafts of the front and rear inner rollers (27A) (28A) Is configured to be displaced forward and backward with respect to others Etc., it may be located appropriately set according to need.
[0022]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0023]
It is embedded in the part between the meshing hole (30) group opened at intervals corresponding to the tooth pitch of the drive sprocket (24) and the meshing hole (30) (30) adjacent to each other, and is grouped at a pitch (P). An elastic endless crawler belt (25) having a core metal (31) group to be wound around a guide wheel (22) (23) and a drive sprocket (24) provided on the track frame (21), In an elastic endless crawler traveling device provided with a group of rollers having an equalizer structure corresponding to the inner surface of the grounded elastic endless crawler belt (25), the inner wheels (27A) and (28A) of the equalizer and the outer wheels ( 27B) and (28B) are provided so as to be positioned in the transition direction of the elastic endless crawler belt (25), and at that time, the position size is approximately ½ with respect to the embedded pitch (P) of the core metal (31) group. Is set so that the elastic endless crawler belt (25) is pivoted. When doing so, one of the inner wheels (27A) (28A) and the outer wheels (27B) (28B) of the equalizer is always positioned corresponding to the embedded portion of the core metal (31), and they are adjacent to each other. The rolling wheels are less likely to fall between the core bars (31) and (31), causing the endless crawler belt to bend, causing slippage between the ground and the crawler, reducing traction, and generating vibration and noise. Inconveniences such as being reduced are reduced.
[0024]
Each of the core bars (31) embedded in the elastic endless crawler belt (25) includes a pair of left and right detachment prevention protrusions (31a) (31a) protruding inwardly of the elastic endless crawler belt (25). An inner roller (27A) (28A) and outer wheel (27A) (28A) of an equalizer, in which a group of anti-protrusion protrusions (31a) (31a) in a row are positioned in the transition direction of the elastic endless crawler belt (25) 27B) (28B), the equalizer is provided with an inner end wheel and an outer side wheel positioned in the elastic endless crawler belt transition direction, so that the endless elastic endlessness is provided. It is possible to accurately prevent the crawler belt from shifting laterally and laterally on the grounding side.
[0025]
Moreover, it is embedded in the part between the meshing hole (30) group opened at intervals corresponding to the tooth pitch of the drive sprocket (24) and the meshing holes (30) and (30) adjacent to each other at the pitch (P). Each of the core bars (31) has a pair of left and right detachment prevention protrusions (31a) (31a) projecting inwardly, and the prevention protrusions (31a) ( An elastic endless crawler belt (25) in which ridges (33) located on the left and right lateral portions of each meshing hole (30) are formed on the inner surface side of the engagement hole (30) outside the left and right sides of 31a), and the guide wheel (22) ( 23) and the drive sprocket (24), and the equalizer wheels (27A) (28A), (27B) (28B) of the equalizer provided to be positioned in the transition direction of the elastic endless crawler belt (25) are elastic. Stepping and rolling the raised portion (33) group on the ground contact side of the endless crawler belt (25) As a result of this configuration, the falling of the rotating wheel when the equalizer wheel is positioned in the portion between the adjacent metal cores (31) (31) (the portion without the metal core) is further reduced. Further, it is possible to further reduce the occurrence of slip, vibration and noise due to the bending of the elastic endless crawler belt.
[Brief description of the drawings]
FIG. 1 is an overall side view of an agricultural tractor in which an elastic endless crawler traveling device according to the present invention is implemented.
FIG. 2 is an enlarged side view of a main part extracted.
FIG. 3 is a plan view showing a main part with a part broken away.
FIG. 4 is an enlarged side view of a part of an elastic endless crawler belt.
FIG. 5 is an enlarged plan view showing a hanging inner portion of an elastic endless crawler belt.
FIG. 6 is a cross-sectional front view of an elastic endless crawler belt.
[Explanation of symbols]
21 Track frame 22 Guide wheel 23 Guide wheel 24 Drive sprocket 25 Elastic endless crawler belt 27A Inner wheel 28A Inner wheel 27B Outer wheel 28B Outer wheel 30 Engagement hole 31 Core metal 31a Protrusion prevention protrusion 33 Pitch

Claims (4)

駆動スプロケット(24)の歯ピッチに合致する間隔で開設された噛合孔(30)群と、相隣る噛合孔(30)(30)の間の部位に埋設されてピッチ(P)で群列する芯金(31)群とを備えた弾性無端履帯(25)を、トラックフレ−ム(21)に設けられた誘導輪(22)(23)と前記駆動スプロケット(24)とに掛回し、掛回された弾性無端履帯(25)の接地側内面に対応させてイコライザ構造の転輪群を設けた弾性無端履帯走行装置において、前記イコライザの内側転輪(27A)(28A)と外側転輪(27B)(28B)とを前記弾性無端履帯(25)の移行方向に位置齟齬させて設けてあることを特徴とする弾性無端履帯走行装置。It is embedded in the part between the meshing hole (30) group opened at intervals corresponding to the tooth pitch of the drive sprocket (24) and the meshing hole (30) (30) adjacent to each other, and is grouped at a pitch (P). An elastic endless crawler belt (25) having a core metal (31) group is wound around guide wheels (22) and (23) provided on a track frame (21) and the drive sprocket (24). In the elastic endless crawler traveling device provided with a group of wheels having an equalizer structure corresponding to the grounded inner surface of the wound elastic endless crawler belt (25), the inner wheels (27A) (28A) and outer wheels of the equalizer (27B) (28B) is provided so as to be positioned in the transition direction of the elastic endless crawler belt (25). イコライザの内側転輪(27A)(28A)と外側転輪(27B) (28B)の弾性無端履帯移行方向における位置齟齬寸法が、前記芯金(31)群の埋設ピッチ(P)に対して略1/2になるように設定してある請求項1に記載の弾性無端履帯走行装置。Positional dimensions of the equalizer inner wheels (27A) (28A) and outer wheels (27B) (28B) in the elastic endless crawler belt transition direction are substantially the same as the embedded pitch (P) of the core bar (31) group. 2. The elastic endless crawler traveling device according to claim 1, which is set to be ½. 弾性無端履帯(25)に埋設された芯金(31)のそれぞれが弾性無端履帯(25)の掛回内方に突出する左右一対の外れ防止突起(31a)(31a)を備え、左右列状となる外れ防止突起(31a)(31a)群が、弾性無端履帯(25)の移行方向に位置齟齬して設けられている前記イコライザの内側転輪(27A)(28A)と外側転輪(27B)(28B)との間を移行するようにしてある請求項1若しくは請求項2に記載の弾性無端履帯走行装置。Each of the core bars (31) embedded in the elastic endless crawler belt (25) includes a pair of left and right detachment prevention protrusions (31a) (31a) protruding inwardly of the elastic endless crawler belt (25), and is arranged in a left-right row The anti-protrusion projections (31a) and (31a) are arranged in the transition direction of the elastic endless crawler belt (25) and are provided on the inner wheels (27A) and (28A) and the outer wheels (27B) of the equalizer. 3) The elastic endless crawler traveling device according to claim 1 or 2, wherein the elastic endless crawler belt traveling device according to claim 1 is moved. 駆動スプロケット(24)の歯ピッチに合致する間隔で開設された噛合孔(30)群と、相隣る噛合孔(30)(30)の間の部位に埋設されてピッチ(P)で群列する芯金(31)とを備え、群列する芯金(31)の各々が掛回内方に突出する左右一対の外れ防止突起(31a)(31a)を有し、その防止突起(31a)(31a)よりも左右外側で各噛合孔(30)の左右横側部位に位置する隆起部(33)が掛回内面側に形設された弾性無端履帯(25)を、誘導輪(22)(23)と駆動スプロケット(24)とに掛回し、弾性無端履帯(25)の移行方向に位置齟齬して設けられるイコライザの転輪(27A)(28A)、(27B)(28B)が、弾性無端履帯(25)の接地側において前記隆起部(33)群を踏圧転動するようにしてあることを特徴とする弾性無端履帯走行装置。It is embedded in the part between the meshing hole (30) group opened at intervals corresponding to the tooth pitch of the drive sprocket (24) and the meshing hole (30) (30) adjacent to each other, and is grouped at a pitch (P). Each of the grouped core bars (31) has a pair of left and right detachment prevention protrusions (31a) (31a) projecting inwardly, and the prevention protrusions (31a). An elastic endless crawler belt (25) having raised portions (33) positioned on the left and right lateral portions of each meshing hole (30) on the left and right outer sides than (31a) is formed on the inner surface side of the guide ring (22). (23) and the drive sprocket (24), and the equalizer wheels (27A) (28A), (27B) (28B) of the equalizer provided so as to be positioned in the transition direction of the elastic endless crawler belt (25) are elastic. Stepping and rolling the raised portion (33) group on the ground contact side of the endless crawler belt (25) Elastic endless crawler traveling apparatus characterized by are Unishi.
JP2003199658A 2003-07-22 2003-07-22 Elastic endless crawler belt travel device Pending JP2005041243A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008168876A (en) * 2007-01-15 2008-07-24 Kubota Corp Crawler traveling device
JP2011116371A (en) * 2011-03-22 2011-06-16 Kubota Corp Crawler traveling device
CN106763280A (en) * 2016-12-12 2017-05-31 郑州市顺意科技有限公司 A kind of double acting clutch tire control device
CN109878584A (en) * 2019-02-19 2019-06-14 华东师范大学 A kind of Athey wheel group of robot car

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008168876A (en) * 2007-01-15 2008-07-24 Kubota Corp Crawler traveling device
JP4684243B2 (en) * 2007-01-15 2011-05-18 株式会社クボタ Crawler travel device
JP2011116371A (en) * 2011-03-22 2011-06-16 Kubota Corp Crawler traveling device
CN106763280A (en) * 2016-12-12 2017-05-31 郑州市顺意科技有限公司 A kind of double acting clutch tire control device
CN106763280B (en) * 2016-12-12 2018-12-11 郑州市顺意科技有限公司 A kind of double acting clutch tire control device
CN109878584A (en) * 2019-02-19 2019-06-14 华东师范大学 A kind of Athey wheel group of robot car

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