JP4326309B2 - Work vehicle - Google Patents

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JP4326309B2
JP4326309B2 JP2003398660A JP2003398660A JP4326309B2 JP 4326309 B2 JP4326309 B2 JP 4326309B2 JP 2003398660 A JP2003398660 A JP 2003398660A JP 2003398660 A JP2003398660 A JP 2003398660A JP 4326309 B2 JP4326309 B2 JP 4326309B2
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sprocket
crawler
lug
lugs
cylindrical member
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JP2005153819A (en
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宗之 河瀬
孝広 内
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Kubota Corp
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本発明は、機体右及び左横方に円筒の部材を延出し、前記円筒の部材の端部にスプロケットを回転駆動自在に支持して、２列の金属製のラグを有するクローラの前記ラグの間に前記スプロケットが入り込んで、前記スプロケットによりクローラを回転駆動するように構成してある作業車に関する。 In the present invention, a cylindrical member is extended to the right and left sides of the fuselage, a sprocket is rotatably supported at an end of the cylindrical member, and the lug of the crawler having two rows of metal lugs is provided. The present invention relates to a work vehicle configured such that the sprocket is inserted therebetween and a crawler is rotationally driven by the sprocket.

従来のクローラ式走行装置を備えた作業車においては、スプロケットにより駆動されるクローラとスプロケットとの連結部分では、特許文献１の図１，特許文献２の図２に開示されているように、クローラの幅に対して幅の狭いスプロケットによって、スプロケットの周方向にクローラが屈曲して巻回されており、クローラの巻回面内側でスプロケットの内側と外側とに並ぶ２列のラグの先端が、スプロケットのボス部、或いはスプロケットを支持する円筒状の部材から離れて構成されている。
特開平１１−１８０３５４号公報（図１） 特開平８−０４０３２４号公報（図２） In a work vehicle equipped with a conventional crawler type traveling device, as shown in FIG. 1 of Patent Document 1 and FIG. The crawler is bent and wound in the circumferential direction of the sprocket by a sprocket having a width narrower than the width of the rocket, and the tip of two rows of lugs aligned on the inside and outside of the sprocket inside the crawler winding surface, It is configured to be separated from the boss portion of the sprocket or the cylindrical member that supports the sprocket.
Japanese Patent Laid-Open No. 11-180354 (FIG. 1) JP-A-8-040324 (FIG. 2)

ところが、前述のようなクローラ式走行装置の構成であると、走行作業中に路面状況の変化などによりクローラの巻回面にねじれが生じた場合には、クローラの幅に対してスプロケットの幅が狭いことにも誘引され、スプロケットの外周に突設している凸部によるクローラとの連結が不安定となり、場合によってはクローラが通常の巻回経路から外れてしまうといったトラブルも起こり得る。また、作業車の湿田走行性能に影響するクローラの平均接地圧を抑えるためにクローラの幅を広く構成しようとすると、上記の問題は一層顕著となる。   However, with the configuration of the crawler type traveling device as described above, when the winding surface of the crawler is twisted due to a change in road surface condition during traveling work, the width of the sprocket is larger than the width of the crawler. Also attracted by the narrowness, the connection with the crawler by the convex portion protruding from the outer periphery of the sprocket becomes unstable, and in some cases, the crawler may come off the normal winding path. In addition, the above problem becomes more prominent when an attempt is made to increase the width of the crawler in order to suppress the average contact pressure of the crawler that affects the wet field running performance of the work vehicle.

また、スプロケットとこれを支持する円筒の部材との連結部分でスプロケットと円筒端部との間に隙間が存在すると、作業走行時に巻き上げられる泥、砂、藁屑などがこの隙間に巻き付いてクローラの裏面との間で異常な摩擦を発生させ、正常な走行の支障となることがある。   Also, if there is a gap between the sprocket and the end of the cylinder at the connection between the sprocket and the cylindrical member that supports it, mud, sand, sawdust, etc. Abnormal friction may occur with the back surface, which may hinder normal travel.

そこで、本発明は、クローラの幅に対して幅の狭いスプロケットであってもクローラをより安定して連結駆動するクローラ式走行装置を備えた作業車を提供することを目的とした。   Accordingly, an object of the present invention is to provide a work vehicle including a crawler type traveling device that more stably connects and drives a crawler even if the sprocket is narrower than the width of the crawler.

〔Ｉ〕
（構成）
本発明の第１特徴は、機体右及び左横方に円筒の部材を延出し、前記円筒の部材の端部にスプロケットを回転駆動自在に支持して、２列の金属製のラグを有するクローラの前記ラグの間に前記スプロケットが入り込んで、前記スプロケットによりクローラを回転駆動するように構成してある作業車において次のように構成することにある。
スプロケットの機体内方側部分に、円筒の部材の端部を外側から覆うリング部材を備え、前記リング部材と前記クローラの前記２列のラグのうちの機体内方側に位置する内方側ラグの先端との機体上下方向での間に設定間隔の隙間が形成される状態で前記リング部材が前記内方側ラグの先端に近接する位置に構成し、
前記スプロケットの機体外方側部分に、前記スプロケットと同心一体回転する円形の輪郭を有した部材を備え、前記円形の輪郭を有した部材と前記クローラの前記２列のラグのうちの機体外方側に位置する外方側ラグの先端との機体上下方向での間に設定間隔の隙間が形成される状態で前記円形の輪郭を有した部材が前記外方側ラグの先端に近接する位置に構成してある。 [I]
(Constitution)
Crawler first feature of the present invention, which extends the cylindrical member to the body right and left lateral side, to rotate the drive rotatably supported sprocket to the end of said cylindrical member, having a metallic lug two rows wherein it enters said sprocket between the lug is to constructed as follows in a working vehicle that is configured to rotationally drive the crawler by the sprocket.
A ring member that covers the end of the cylindrical member from the outside is provided on the inward side portion of the sprocket, and the inner side lug located on the inward side of the two rows of lugs of the ring member and the crawler The ring member is configured at a position close to the tip of the inward side lug in a state where a gap of a set interval is formed between the tip and the top of the machine body in the vertical direction ,
A member having a circular contour that rotates concentrically and integrally with the sprocket is provided on the outer portion of the sprocket, and the outer portion of the two rows of lugs of the circular contour member and the crawler. The member having the circular contour is positioned close to the front end of the outer side lug in a state where a gap of a set interval is formed between the front end of the outer side lug positioned on the side and the vertical direction of the fuselage. It is configured .

（作用）
本発明の第１特徴によると、スプロケットの機体内方側部分に、円筒の部材の端部を外側から覆うリング部材を備え、リング部材がクローラのラグの先端に近接する位置に構成してある。したがって、回転中のクローラにおいて、通常巻回面に対してねじれが生じてスプロケットの回転面に対してクローラ面がスプロケットの機体内方側に傾斜した場合、クローラの裏面にある機体内方側のラグの先端とスプロケットの機体内方側にあるリング部材の外周との間隔が狭くなる。そして、クローラが所定の傾斜以上に機体内方側に傾くと、クローラの裏面にあるラグの先端とスプロケットの機体内方側のリングの外周とが当接してクローラ面の機体内方側への傾斜が抑制され、クローラは比較的安定した巻回経路を維持できる。 (Function)
According to the first aspect of the present invention, a ring member that covers the end portion of the cylindrical member from the outside is provided in the inward side portion of the sprocket, and the ring member is configured to be close to the tip of the crawler lug. . Therefore, in a rotating crawler, when a twist occurs with respect to the normal winding surface and the crawler surface is inclined with respect to the rotating surface of the sprocket toward the inward side of the sprocket, The distance between the tip of the lug and the outer periphery of the ring member on the inner side of the sprocket is reduced. When the crawler is tilted toward the fuselage more than a predetermined tilt, the tip of the lug on the back of the crawler and the outer periphery of the ring on the sprocket inner side come into contact with the crawler surface toward the fuselage. The inclination is suppressed and the crawler can maintain a relatively stable winding path.

さらに、リング部材が駆動軸を内装する円筒の部材の端部を外側から覆っているので、円筒の部材端部から円筒の内部に泥や藁屑などが入り込みにくい構造となっており、リング部材がカバーの役割を果たしている。
本発明の第１特徴によると、スプロケットの機体外方側部分に、スプロケットと同心一体回転する円形の輪郭を有した部材を、ラグの先端に近接する位置に構成してある。したがって、回転中のクローラにおいて、通常巻回面に対してねじれが生じてスプロケットの回転面に対してクローラ面がスプロケットの機体外方側に傾斜した場合、クローラの裏面にある機体外方側のラグの先端とスプロケットの機体外方側にある円形の輪郭を有した部材の外周との間隔が狭くなる。そして、クローラが所定の傾斜以上に機体外方側に傾くと、クローラの裏面にあるラグの先端とスプロケットの機体外方側の円形の輪郭を有した部材の外周とが当接してクローラ面の機体外方側への傾斜が抑制され、クローラは比較的安定した巻回経路を維持できる。 Further, since the ring member covers the end of the cylindrical member that houses the drive shaft from the outside, the ring member has a structure in which mud and debris do not easily enter the cylinder from the end of the cylindrical member. Plays the role of the cover.
According to the first feature of the present invention, a member having a circular contour that rotates concentrically with the sprocket is formed at a position close to the tip of the lug on the outer side portion of the sprocket. Therefore, when the crawler in rotation is twisted with respect to the normal winding surface and the crawler surface is inclined to the outer side of the sprocket with respect to the rotation surface of the sprocket, The gap between the tip of the lug and the outer periphery of the member having a circular contour on the outer side of the sprocket is reduced. When the crawler is tilted to the outside of the machine more than a predetermined slope, the tip of the lug on the back of the crawler and the outer periphery of the member having a circular contour on the outside of the machine of the sprocket come into contact with each other. Inclination to the outside of the machine body is suppressed, and the crawler can maintain a relatively stable winding path.

（発明の効果）
本発明の第１特徴によると、クローラの裏面にあるラグの先端とスプロケットの機体内方側のリングの外周とが当接してクローラ面の機体内方側への傾斜が抑制され、クローラは比較的安定した巻回経路を維持できるので、走行作業中にクローラが通常の巻回経路から外れるおそれが低減する。したがって、走行作業途中に作業を中断して修復作業を行うといった事態の発生の可能性が減り、作業安定性や作業効率が向上する。
本発明の第１特徴によると、クローラの裏面にあるラグの先端とスプロケットの機体外方側の円形の輪郭を有した部材の外周とが当接してクローラ面の機体外方側への傾斜が抑制され、クローラは比較的安定した巻回経路を維持できるので、走行作業中にクローラが通常の巻回経路から外れるおそれが低減する。したがって、走行作業途中に作業を中断して修復作業を行うといった事態の発生の可能性が減り、作業安定性や作業効率が向上する。 (The invention's effect)
According to the first feature of the present invention, the tip of the lug on the back surface of the crawler and the outer periphery of the ring on the inward side of the sprocket are in contact with each other, so that the inclination of the crawler surface toward the inward side is suppressed. Therefore, the risk of the crawler being detached from the normal winding path during the traveling operation is reduced. Therefore, the possibility of occurrence of a situation where the work is interrupted during the traveling work and the repair work is performed is reduced, and the work stability and work efficiency are improved.
According to the first feature of the present invention, the tip of the lug on the back surface of the crawler and the outer periphery of the member having a circular outline on the outer side of the sprocket are in contact with each other, so that the crawler surface is inclined to the outer side. As a result, the crawler can maintain a relatively stable winding path, thereby reducing the possibility of the crawler coming off from the normal winding path during traveling. Therefore, the possibility of occurrence of a situation where the work is interrupted during the traveling work and the repair work is performed is reduced, and the work stability and work efficiency are improved.

さらに、円筒の部材端部から円筒の内部に泥や藁屑などが入り込みにくい構造となっており、リング部材がカバーの役割を果たしているので、円筒部材の端部に対して新たな構成によるカバーを設ける必要がない。したがって、構成の簡素化と同時に部品点数の削減が図られ、コスト低減の効果を奏する。   In addition, mud and swarf are difficult to enter inside the cylinder from the end of the cylinder, and the ring member serves as a cover. There is no need to provide. Therefore, the number of parts can be reduced simultaneously with the simplification of the configuration, and the cost can be reduced.

〔ＩＩ〕
（構成）
本発明の第２特徴は、本発明の第１特徴の作業車において次のように構成することにある。
前記リング部材と前記円筒の部材とが、半径方向で近接し合うとともに重合し合っている。 [II]
(Constitution)
The second feature of the present invention is that the work vehicle of the first feature of the present invention is configured as follows.
The ring member and the cylindrical member are close to each other in the radial direction and overlapped with each other.

以下、本発明の実施例を図面に基づいて説明する。
図１にクローラ走行式の農作業機の一例であるコンバインが示されている。このコンバインは、左右一対のクローラ走行装置１を備えた機体の前部に、刈取り前処理部２を昇降自在に連結するとともに、機体上に脱穀装置３、原動部（図示せず）、操縦部５、および穀粒貯留用のタンク６、等を搭載して構成されている。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a combine as an example of a crawler traveling type farm working machine. This combine is connected to the front part of the machine body provided with a pair of left and right crawler travel devices 1 so that the pre-cutting processing unit 2 can be raised and lowered. 5 and a tank 6 for storing grains, and the like.

図２に示すように、クローラ走行装置１は、機体前端のスプロケット７、機体後端の緊張輪８、これらの間に位置する多数の接地側転輪９群、および上部案内輪１０に亘ってゴム製のクローラベルト１１（本発明のクローラに相当）を巻回張設した構造となっている。   As shown in FIG. 2, the crawler traveling device 1 extends over the sprocket 7 at the front end of the machine body, the tension wheel 8 at the rear end of the machine body, a large number of ground-side wheels 9 located between them, and the upper guide wheel 10. A rubber crawler belt 11 (corresponding to the crawler of the present invention) is wound and stretched.

図３に示すように、スプロケット７は図外のミッションケースから左右に延出させた駆動軸１４の端部に一体回転自在にスプライン嵌合し、スプロケット７の外側方の回転中心において、連結ボルト１６により駆動軸１４と固定連結されている。スプロケット７の外周部に構成されている複数の凸部１５は、クローラベルト１１の外周面に連続して突設した推進ラグ１８の間においてクローラベルト１１に設けられた咬合穴１７に咬合している。   As shown in FIG. 3, the sprocket 7 is spline-fitted to the end of the drive shaft 14 extending left and right from a transmission case (not shown) so as to be integrally rotatable, and a connecting bolt at the outer rotation center of the sprocket 7. 16 is fixedly connected to the drive shaft 14. The plurality of convex portions 15 formed on the outer peripheral portion of the sprocket 7 are engaged with the occlusal holes 17 provided in the crawler belt 11 between the propulsion lugs 18 continuously projecting on the outer peripheral surface of the crawler belt 11. Yes.

図４に示すように、推進ラグ１８が突設している箇所のクローラベルト１１の内部には、クローラベルト１１の幅方向に補強用の部材として芯金１２が埋め込まれており、芯金１２の一部分が、クローラベルト１１の裏面に内方側ラグ１２ａ，外方側ラグ１２ｂ（本発明のラグに相当）として突出している。機体の左右に架設された転輪支持フレーム１３に軸支される転輪９は、内側転輪９ａと外側転輪９ｂとが、内方側ラグ１２ａと外方側ラグ１２ｂとの間隔に合わせた距離を隔てて対抗して設けられている。   As shown in FIG. 4, a cored bar 12 is embedded as a reinforcing member in the width direction of the crawler belt 11 in the crawler belt 11 where the propulsion lug 18 protrudes. Are projected on the back surface of the crawler belt 11 as an inner lug 12a and an outer lug 12b (corresponding to the lug of the present invention). The wheels 9 that are pivotally supported by the wheel support frames 13 installed on the left and right sides of the machine body have an inner wheel 9a and an outer wheel 9b that match the distance between the inner lug 12a and the outer lug 12b. It is provided in opposition with a certain distance.

図３に基づいて、スプロケット７と駆動軸１４の連結部分について詳細を説明する。図示しないミッションケースから延出した車軸ケース２０（本発明の円筒の部材に相当）に支承された駆動軸１４に対してスプロケット７が取り付けられている。スプロケット７がその機体内方側の回転中心部において駆動軸１４の端部に対して嵌合部２１によりスプライン外嵌している。駆動軸１４を覆う車軸ケース２０の外端側内方と駆動軸１４との間には、車軸ケース２０の段部においてはベアリング２２を嵌装し、ベアリング２２の車軸ケース２０外方側においてはオイルシールを備えたスリーブ２３を嵌装してある。車軸ケース２０の外端部はカラー２４（本発明のリング部材に相当）によって覆われている。カラー２４はスプロケット７の機体内方側において回転中心のボス部の外縁を変形して構成されている。カラー２４は側面視でリング状の形状をしており、その外周とクローラベルト１１の内面に突出する芯金１２の内方側ラグ１２ａの先端とが隙間Ｗ１を有して近接するように構成されている。 Based on FIG. 3, the connection part of the sprocket 7 and the drive shaft 14 is demonstrated in detail. A sprocket 7 is attached to a drive shaft 14 supported on an axle case 20 (corresponding to a cylindrical member of the present invention) extending from a transmission case (not shown). The sprocket 7 is externally fitted to the end of the drive shaft 14 by a fitting portion 21 at the center of rotation on the inner side of the machine body. Between the inner side of the outer end side of the axle case 20 covering the drive shaft 14 and the drive shaft 14, a bearing 22 is fitted in a step portion of the axle case 20, and on the outer side of the axle case 20 of the bearing 22. A sleeve 23 provided with an oil seal is fitted. The outer end portion of the axle case 20 is covered with a collar 24 (corresponding to the ring member of the present invention). The collar 24 is formed by deforming the outer edge of the boss portion at the center of rotation on the inward side of the sprocket 7. The collar 24 has a ring shape when viewed from the side, and is configured such that the outer periphery thereof and the tip of the inner lug 12a of the cored bar 12 protruding from the inner surface of the crawler belt 11 are close to each other with a gap W1. Has been.

スプロケット７の機体外方側には環状の輪体１９（本発明の円形の輪郭を有した部材に相当）がスプロケット７と一体回転するように固設されている。輪体１９の外周はカラー２４の外周とスプロケット７の回転面に関して対称な位置に構成されている。すなわち、輪体１９の外周とクローラベルト１１の内面に突出する芯金１２の外方側ラグ１２ｂの先端とが隙間Ｗ２を有して近接するように構成されている。 An annular ring body 19 (corresponding to a member having a circular outline of the present invention) is fixed to the sprocket 7 so as to rotate integrally with the sprocket 7. The outer periphery of the ring body 19 is configured in a symmetrical position with respect to the outer periphery of the collar 24 and the rotation surface of the sprocket 7. That is, the outer periphery of the ring body 19 and the tip of the outer side lug 12b of the cored bar 12 protruding from the inner surface of the crawler belt 11 are configured to be close to each other with a gap W2 .

前述のような構成であるので、カラー２４はスプロケット７と駆動軸１４を取り付けるボス部分の一部分でありながら、車軸ケース２０の外方側端部を覆うシールカバーの役割も果たしており、さらに内方側ラグ１２ａ或いは外方側ラグ１２ｂが輪体１９或いはカラー２４の外周に当接して芯金１２の傾斜を抑制するので、クローラベルト１１の巻回経路が安定するという作用もある。さらには、内方側ラグ１２ａ及び外方側ラグ１２ｂの先端周辺の空間が少ないので、スプロケット７の機体外方側及び内方側には泥や藁屑が堆積しにくく、クローラベルト１１やスプロケット７が回転する際の異常摩擦が低減する。
これらの作用により、構成の簡素化と同時に部品点数の削減が図られると同時に、作業の安定性や作業効率が向上する。 Since the collar 24 is configured as described above, the collar 24 serves as a seal cover that covers the outer side end portion of the axle case 20 while being a part of the boss portion to which the sprocket 7 and the drive shaft 14 are attached. Since the side lugs 12a or the outer side lugs 12b abut against the outer periphery of the ring body 19 or the collar 24 to suppress the inclination of the cored bar 12, the winding path of the crawler belt 11 is also stabilized. Furthermore, since there is little space around the tips of the inner lugs 12a and the outer lugs 12b, mud and debris hardly accumulate on the outer and inner sides of the sprocket 7, and the crawler belt 11 and sprocket Abnormal friction when 7 rotates is reduced.
By these actions, the number of parts can be reduced simultaneously with simplification of the configuration, and at the same time, the stability and work efficiency of work can be improved.

〔発明の実施の別形態〕
前述の〔発明を実施するための最良の形態〕でのスプロケット７を一体構造とせずに、図５（ロ）に示すように、ボス部分から脱着スプロケット７ａを離脱可能に構成してもよい。この場合、図５（イ）に示す取り付けボルト２５を外すことによって脱着スプロケット７ａを取り付けフランジ７ｂから、すなわち駆動軸１４から脱着スプロケット７ａを離脱させることができるようになる。 [Another Embodiment of the Invention]
Instead of the sprocket 7 in the above-mentioned [Best Mode for Carrying Out the Invention] as shown in FIG. 5 (b), the detachable sprocket 7a may be detachable from the boss portion. In this case, the attachment / detachment sprocket 7a can be detached from the attachment flange 7b, that is, the drive shaft 14 by removing the attachment bolt 25 shown in FIG.

このように脱着スプロケット７ａを取り付けフランジ７ｂから分離可能に構成すると、脱着スプロケット７ａの交換を車軸ケース２０及び駆動軸１４の機体外方側端部を露出させないで行うことができ、駆動軸１４のスプライン咬合部や車軸ケース２０の機体外方側端部を周辺の環境から保護することができる。   When the detachable sprocket 7a is configured to be separable from the mounting flange 7b in this way, the detachable sprocket 7a can be replaced without exposing the outer end of the axle case 20 and the drive shaft 14 to the outside of the body. It is possible to protect the spline occlusion portion and the outer end of the axle case 20 from the surrounding environment.

また、このように脱着スプロケット７ａと取り付けフランジ７ｂとの側面どうしを接当させてボルト連結させる手段では、たとえ、相互の面どうしが錆び付いたとしても面方向に引き剥がすだけでよく、錆び付いたスプライン歯どうしをその軸方向に引き剥がすに比べて楽である。   Further, with the means for connecting the bolts by bringing the side surfaces of the attachment / detachment sprocket 7a and the mounting flange 7b into contact with each other as described above, even if the mutual surfaces are rusted, they only have to be peeled off in the direction of the surface. It is easier than peeling the teeth apart in the axial direction.

さらには、脱着スプロケット７ａの交換時にはクローラベルト１１は取り付けフランジ７ｂに引っ掛けた状態に維持可能であるから、クローラベルト１１の垂れ下がりが少ない状態で脱着スプロケット７ａの交換が可能である。このように、脱着スプロケット７ａの交換作業の容易化を図ることができる。   Furthermore, since the crawler belt 11 can be kept hooked on the attachment flange 7b when the detachable sprocket 7a is replaced, the detachable sprocket 7a can be replaced while the crawler belt 11 does not hang down. In this way, the replacement work of the detachable sprocket 7a can be facilitated.

コンバインの全体側面図Combine side view クローラ走行装置の側面図Side view of crawler traveling device 駆動軸とスプロケットとの連結部分の断面図Sectional view of the connecting part of the drive shaft and sprocket 接地側転輪の接地状態の断面図Cross-sectional view of the grounded wheel 発明の実施の別形態におけるスプロケットの取り付け構造及び交換状態を示す断面図Sectional drawing which shows the attachment structure and replacement | exchange state of the sprocket in another embodiment of invention

７，７ａ，７ｂ スプロケット
１１ クローラ
１２ａ 内方側ラグ
１２ｂ 外方側ラグ
１９ 円形の輪郭を有した部材
２０ 円筒の部材
２４ リング部材
Ｗ１ リング部材と内方側ラグとの隙間
Ｗ２ 円形の輪郭を有した部材と外方側ラグとの隙間 7, 7a, 7b Sprocket 11 Crawler 12a Inner side lug
12b Outer lug 19 Circular member 20 Cylindrical member 24 Ring member
Clearance between W1 ring member and inner lug
The gap between the W2 circular member and the outer lug

Claims (2)

機体右及び左横方に円筒の部材を延出し、前記円筒の部材の端部にスプロケットを回転駆動自在に支持して、２列の金属製のラグを有するクローラの前記ラグの間に前記スプロケットが入り込んで、前記スプロケットによりクローラを回転駆動するように構成してある作業車であって、
前記スプロケットの機体内方側部分に、前記円筒の部材の端部を外側から覆うリング部材を備え、前記リング部材と前記クローラの前記２列のラグのうちの機体内方側に位置する内方側ラグの先端との機体上下方向での間に設定間隔の隙間が形成される状態で前記リング部材が前記内方側ラグの先端に近接する位置に構成し、
前記スプロケットの機体外方側部分に、前記スプロケットと同心一体回転する円形の輪郭を有した部材を備え、前記円形の輪郭を有した部材と前記クローラの前記２列のラグのうちの機体外方側に位置する外方側ラグの先端との機体上下方向での間に設定間隔の隙間が形成される状態で前記円形の輪郭を有した部材が前記外方側ラグの先端に近接する位置に構成してある作業車。 A cylindrical member is extended to the right and left of the machine body, and a sprocket is rotatably supported at an end of the cylindrical member, and the sprocket is interposed between the lugs of a crawler having two rows of metal lugs. Is a work vehicle configured to rotate and drive the crawler by the sprocket,
A ring member that covers an end portion of the cylindrical member from the outside is provided at an inward side portion of the sprocket, and an inward position that is located on the inward side of the two lugs of the ring member and the crawler. The ring member is configured at a position close to the front end of the inward side lug in a state where a gap of a set interval is formed between the front end of the side lug and the top and bottom direction of the machine body ,
A member having a circular contour that rotates concentrically and integrally with the sprocket is provided on the outer portion of the sprocket, and the outer portion of the two rows of lugs of the circular contour member and the crawler. The member having the circular contour is positioned close to the front end of the outer side lug in a state where a gap of a set interval is formed between the front end of the outer side lug positioned on the side and the vertical direction of the fuselage. A structured work vehicle. 前記リング部材と前記円筒の部材とが、半径方向で近接し合うとともに重合し合っている請求項１記載の作業車。 The work vehicle according to claim 1, wherein the ring member and the cylindrical member are close to each other in the radial direction and overlap each other .
JP2003398660A 2003-11-28 2003-11-28 Work vehicle Expired - Fee Related JP4326309B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11420293B2 (en) 2016-05-26 2022-08-23 Corning Optical Communications LLC Methods of ferrule reshaping for correcting core-to-ferrule concentricity errors, and optical fiber cable assemblies related to such methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11420293B2 (en) 2016-05-26 2022-08-23 Corning Optical Communications LLC Methods of ferrule reshaping for correcting core-to-ferrule concentricity errors, and optical fiber cable assemblies related to such methods

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