JPH0127505Y2 - - Google Patents

Description

【考案の詳細な説明】 〈産業上の利用分野〉 本考案は、コンバイン、刈取機、各種運搬車、
雪上車等の走行車輌に使用されるクローラ用弾性
履帯に関する。[Detailed description of the invention] <Industrial application field> This invention is applicable to combine harvesters, reapers, various transport vehicles,
The present invention relates to elastic tracks for crawlers used in traveling vehicles such as snowmobiles.

〈従来の技術〉 この種の弾性履帯は、幅方向に中央部とその両
側の翼部とを有して無端帯状に形成され、幅方向
及び周方向に抗張力を保有すべく、中央部に芯金
と周方向抗張体とを埋設している。翼部は浮力を
発生すると同時に排水性も良好にする必要がある
ため、上下方向の弾性変形を許容できるように芯
金及び抗張体は埋設されていない。<Prior art> This type of elastic crawler track is formed into an endless band shape with a central part and wing parts on both sides in the width direction, and has a core in the central part in order to maintain tensile strength in the width direction and circumferential direction. Gold and a circumferential tension member are buried therein. Since the wing part needs to generate buoyancy and at the same time have good drainage performance, the core metal and tensile body are not buried in order to allow elastic deformation in the vertical direction.

中央部の周方向抗張体は一般的に１プライのみ
埋設されており、凹凸地、傾斜地等を走行する際
に抗張体の外端側のみに集中的な力が働き、内端
側より損傷が早く、弾性履帯の耐久性を低くして
いた。 Generally, only one ply of the circumferential tensile member in the center is buried, and when driving on uneven ground or slopes, concentrated force acts only on the outer end of the tensile member, and Damage occurred quickly, reducing the durability of the elastic track.

そこで、この欠点を解消するために、従来にお
いては第３図（実開昭57−5384号公報）に示すよ
うに、全幅の周方向抗張体１６Ａの外端側に更に
もう１プライの周方向狭幅抗張体１６Ｂを埋設
し、中央部７の左右側端を更に補強することが考
えられていた。 Therefore, in order to eliminate this drawback, in the past, as shown in FIG. It has been considered to further reinforce the left and right ends of the central portion 7 by embedding narrow-width tensile members 16B.

〈考案が解決しようとする問題点〉 しかしながら、前記従来の弾性履帯１′は狭幅
抗張体１６Ｂを設けることにより抗張体の強度は
増大するが、接地面９が平坦なままであるため、
その複層部αの弾性材料の肉厚Ｔ１は単層部βの
肉厚Ｔ２より薄くなり、路面の突起物で損傷を受
け易く、損傷を受けると抗張体１６がダメージを
受け、耐久性の向上に実質的につながらないもの
であつた。また、逆に肉厚Ｔ１を十分な厚さにす
ると肉厚Ｔ２が厚肉になり過ぎ、屈曲性能が悪化
する。<Problems to be solved by the invention> However, in the conventional elastic crawler track 1', although the strength of the tensile body is increased by providing the narrow tensile body 16B, the ground plane 9 remains flat. ,
The wall thickness T1 of the elastic material of the multilayer part α is thinner than the wall thickness T2 of the single layer part β, and it is easily damaged by protrusions on the road surface. This did not lead to any substantial improvement in the quality of the product. On the other hand, if the wall thickness T1 is set to a sufficient thickness, the wall thickness T2 becomes too thick and the bending performance deteriorates.

〈問題を解決するための手段〉 本考案は、このような従来技術の種々の問題点
を、弾性履帯１の中央部７に周方向全幅抗張体１
６Ａを埋設すると共にその左右外端側にのみ周方
向狭幅抗張体１６Ｂを埋設し、この複層部αに対
応する接地面９を膨出させて、単層部βと略同一
以上の厚肉にすることにより、総て解決するよう
にしたものである。<Means for Solving the Problems> The present invention solves the various problems of the prior art by adding a full-width circumferential tensile member 1 to the central portion 7 of the elastic crawler track 1.
6A, and a circumferentially narrow tensile member 16B is buried only on the left and right outer ends thereof, and the ground plane 9 corresponding to the multi-layer part α is bulged out so that it is approximately the same or more than the single-layer part β. All of these problems were solved by making the wall thicker.

本考案における問題解決手段の具体的構成は、
幅方向に中央部７とその両側の翼部８とを有する
本体６を弾性材料で無端帯状に形成し、この本体
６の接地面９側に周方向等間隔にラグ１０を一体
突設し、このラグ１０と対応して中央部７に芯金
１２を埋設し、この芯金１２間にスプロケツト係
合孔１４を形成し、且つ中央部７に略係合孔１４
から芯金１２の左右外端に亘る幅を有する周方向
全幅抗張体１６Ａと芯金外端付近の周方向狭幅抗
張体１６Ｂとを埋設したクローラ用弾性履帯にお
いて、 前記中央部７には狭幅抗張体１６Ｂに対応する
接地面９に膨出部１７を形成して、接地面９から
狭幅抗張体１６Ｂを有する複層部αまでの肉厚Ｔ
１全幅抗張体１６Ａのみの単層部βまでの肉厚Ｔ
２に対して略同一以上に設定した点を特徴とす
る。 The specific configuration of the problem solving means in this invention is as follows:
A main body 6 having a center part 7 and wing parts 8 on both sides thereof in the width direction is formed into an endless band shape from an elastic material, and lugs 10 are integrally protruded from the ground plane 9 side of the main body 6 at equal intervals in the circumferential direction, A core bar 12 is embedded in the center part 7 corresponding to the lug 10, a sprocket engagement hole 14 is formed between the core bars 12, and a substantially engagement hole 14 is formed in the center part 7.
In the elastic crawler track for a crawler, in which a full width tensile member 16A in the circumferential direction and a narrow width tensile member 16B in the circumferential direction near the outer end of the core metal are embedded, The bulging portion 17 is formed on the ground plane 9 corresponding to the narrow width tensile body 16B, and the wall thickness T from the ground plane 9 to the multilayer part α having the narrow width tensile body 16B is
1 Thickness T up to single layer part β of full width tensile member 16A only
It is characterized in that it is set to be substantially the same or more than 2.

〈実施例〉 以下、本発明の実施例を図面に基いて説明す
る。第１〜２図において、１はクローラとしての
弾性履帯で、作業車機枠２に支持された駆動スプ
ロケツト３、従動輪４及び転動輪５に巻掛けられ
ており、従動輪４及び転動輪５等に巻掛けられた
部分では円弧状に変形している。<Example> Hereinafter, an example of the present invention will be described based on the drawings. In Figs. 1 and 2, reference numeral 1 denotes an elastic track as a crawler, which is wound around a drive sprocket 3, a driven wheel 4, and a rolling wheel 5 supported by a work vehicle machine frame 2. The part that is wrapped around the body is deformed into an arc shape.

弾性履帯１はゴム等の弾性材料で無端帯状に形
成されており、その本体６は幅方向中央部７の両
側がが翼部８となつており、接地面９側には周方
向等間隔にラグ１０が一体形成され、このラグ１
０の側面は内側に傾斜している。 The elastic crawler track 1 is made of an elastic material such as rubber and is formed into an endless belt shape, and the main body 6 has wing parts 8 on both sides of the widthwise central part 7, and has wing parts 8 on the side of the ground contact surface 9 at equal intervals in the circumferential direction. A lug 10 is integrally formed, and this lug 1
0 sides slope inward.

前記中央部７にはラグ１０と対応する周方向位
置に芯金１２が埋設され、内周面側に脱輪防止用
のガイド突起１３が突設されており、この芯金１
２間にはスプロケツト３が咬合する係合孔１４が
形成されている。また、中央部７内には芯金１２
より接地面９側に周方向抗張体１６が埋設されて
いる。この抗張体１６は係合孔１４の左右から芯
金１２の外側誕端１２ａ（中央部外端側）近傍ま
で配置されてた全幅抗張体１６Ａと、芯金１２の
外端付近にのみ配置された狭幅抗張体１６Ｂとを
有し、例えばスチールコードで帯状に形成されて
いる。 A core metal 12 is buried in the center portion 7 at a position in the circumferential direction corresponding to the lug 10, and a guide protrusion 13 for preventing wheel slippage is protruded from the inner peripheral surface side.
An engagement hole 14 into which the sprocket 3 engages is formed between the two. In addition, a core metal 12 is provided in the central portion 7.
A circumferential tensile member 16 is buried closer to the ground plane 9 side. This tensile body 16 includes a full-width tensile body 16A that is arranged from the left and right sides of the engagement hole 14 to the vicinity of the outer birth edge 12a (center outer end side) of the core bar 12, and a full-width tension body 16A that is disposed from the left and right of the engagement hole 14 to the vicinity of the outer end 12a of the core bar 12, and only near the outer end of the core bar 12. It has a narrow tensile member 16B arranged therein, and is formed into a band shape of, for example, a steel cord.

前記狭幅抗張体１６Ｂは、第３図に示す従来例
と同様に、全幅抗張体１６Ａより接地面９側に配
置しても良いが、第１図に示すように、全幅抗張
体１６Ａと芯金１２との間に配置して、少なくと
も内側側端を全幅抗張体１６Ａで覆い保護する方
が好ましい。また、狭幅抗張体１６Ｂは係合孔１
４と芯金外側端１２ａとの中途から芯金外側端１
２ａまで配置されているが、その外側端は芯金外
側端１２ａ及び全幅抗張体１６Ａの外側端等に対
して多少は内側又は外側に位置しても良い。 The narrow-width tensile member 16B may be arranged closer to the ground plane 9 than the full-width tensile member 16A, as in the conventional example shown in FIG. 3, but as shown in FIG. It is preferable to arrange it between the tension member 16A and the core bar 12 and cover and protect at least the inner side end with the full width tensile member 16A. In addition, the narrow tensile body 16B has the engagement hole 1
4 and the outer end 12a of the core metal
2a, but the outer end thereof may be located somewhat inside or outside of the outer end of the core bar 12a and the outer end of the full-width tensile member 16A.

前記狭幅抗張体１６Ｂを埋設している部分は全
幅抗張体１６Ａとで複層部αとなつており、全幅
抗張体１６Ａのみの部分は単層部βとなつてい
る。各抗張体１６Ａ，１６Ｂは夫々１プライずつ
設けられているが２プライ以上ずつ設けることも
可能である。 The part in which the narrow width tensile member 16B is buried forms a multilayer part α with the full width tension member 16A, and the part containing only the full width tension member 16A forms a single layer part β. Each tensile member 16A, 16B is provided with one ply, but it is also possible to provide two or more plies.

複層部αは狭幅抗張体１６Ｂを設けた分だけ単
層部βより厚くなつており、その厚くなつた分だ
け接地面９に膨出部１７が形成されていて、その
膨出部１７における接地面９から抗張体下面まで
の距離、即ち肉厚Ｔ１は単層部βにおける肉厚Ｔ
２と略同一に設定されている。前記肉厚Ｔ１は肉
厚Ｔ２よりわずかに薄肉であつても良いが、集中
荷重が加わる部分であるのでより厚い方が好まし
い。しかし、厚肉過多になるとスプロケツト巻掛
け時に屈曲ロスが大きくなると共に表皮伸びが大
となり、亀裂の発生原因となるので、そのような
問題が生じない肉厚とする。 The multi-layer part α is thicker than the single-layer part β by the provision of the narrow tensile member 16B, and a bulge 17 is formed on the ground plane 9 to account for the increased thickness. The distance from the ground plane 9 to the lower surface of the tensile member at 17, that is, the wall thickness T1, is the wall thickness T at the single layer portion β.
It is set almost the same as 2. Although the wall thickness T1 may be slightly thinner than the wall thickness T2, it is preferably thicker since this is a portion to which a concentrated load is applied. However, if the wall is too thick, the bending loss will increase when the sprocket is wound, and the skin will stretch too much, which will cause cracks to occur, so the wall thickness should be set so that such problems do not occur.

翼部８は中央部７からその外側端８ａにいくに
従つて漸次薄肉となつており、上下面は傾斜面と
なつている。この翼部８内には周方向に翼抗張体
を埋設することが可能である。その翼抗張体は抗
張体１６と同一長さのスチールコード等の強靭材
料で幅のある帯状に形成し、抗張体１６側、即ち
芯金１２側から翼部外側端８ａ側へいくに従つて
接地面９から漸次離隔するように傾斜させて傾斜
接地面１８と平行し、且つその翼抗張体の芯金側
２１ａと翼端側２１ｂとを周方向長さを同一にし
ておく。またその翼抗張体は抗張体１６Ａ又は１
６Ｂと一体に形成しても良い。 The wing portion 8 gradually becomes thinner from the center portion 7 toward the outer end 8a, and the upper and lower surfaces thereof are sloped surfaces. It is possible to embed a wing tension member in the circumferential direction within this wing portion 8 . The wing tension member is made of a strong material such as a steel cord and has the same length as the tension member 16, and is formed into a wide band shape, and extends from the tension member 16 side, that is, the core metal 12 side, to the wing outer end 8a side. Therefore, it is inclined so as to be gradually separated from the ground plane 9 and parallel to the inclined ground plane 18, and the core metal side 21a and the wing tip side 21b of the wing tension body are made to have the same length in the circumferential direction. . Also, the wing tensile body is tensile body 16A or 1
It may be formed integrally with 6B.

〈考案の効果〉 以上詳述した本考案によれば、弾性履帯１は、
中央部７には狭幅抗張体１６Ｂに対応する接地面
９に膨出部１７を形成して、接地面９から狭幅抗
張体１６Ｂを有する複層部αまでの肉厚Ｔ１を全
幅抗張体１６Ａのみの単層部βまでの肉厚Ｔ２に
対して略同一以上に設定されているので、中央部
７の左右外端側に狭幅抗張体１６Ｂ埋設して抗張
体強度を増大しても、複層部αでの弾性材料の肉
厚Ｔ１を必要且つ十分な量にすることができ、路
面の突起物に乗り上げても損傷することがなく、
狭幅抗張体１６Ｂの保護が単層部βと同等にでき
る。<Effect of the invention> According to the invention detailed above, the elastic crawler track 1 has the following characteristics:
In the center part 7, a bulging part 17 is formed on the ground plane 9 corresponding to the narrow width tensile body 16B, so that the wall thickness T1 from the ground plane 9 to the multilayer part α having the narrow width tensile body 16B is the entire width. Since the thickness T2 of only the tensile member 16A up to the single layer portion β is set to be approximately the same or more, the narrow tensile member 16B is buried in the left and right outer ends of the central portion 7 to improve the tensile member strength. Even if the elastic material is increased, the thickness T1 of the elastic material in the multilayer part α can be set to a necessary and sufficient amount, and the elastic material will not be damaged even if it runs over a protrusion on the road surface.
The narrow tensile member 16B can be protected in the same manner as the single layer portion β.

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

第１図は本考案の実施例を示す断面図、第２図
は弾性履帯の使用状態を示す側面図、第３図は従
来技術を示す断面図である。 １……弾性履帯、６……本体、７……中央部、
８……翼部、９……接地面、１０……ラグ、１２
……芯金、１２ａ……外側端、１４……係合孔、
１６……抗張体、１６Ａ……全幅抗張体、１６Ｂ
……狭幅抗張体、１７……膨出部、α……複層
部、β……単層部、Ｔ……肉厚。 FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a side view showing how an elastic track is used, and FIG. 3 is a sectional view showing a conventional technique. 1...Elastic track, 6...Main body, 7...Central part,
8... Wing section, 9... Ground contact surface, 10... Lug, 12
... Core metal, 12a ... Outer end, 14 ... Engagement hole,
16... Tensile body, 16A... Full width tensile body, 16B
...Narrow width tensile member, 17...Bulging part, α...Multilayer part, β...Single layer part, T...Thickness.

Claims (1)

【実用新案登録請求の範囲】 幅方向に中央部７とその両側の翼部８とを有す
る本体６を弾性材料で無端帯状に形成し、この本
体６の接地面９側に周方向等間隔にラグ１０を一
体突設し、このラグ１０と対応して中央部７に芯
金１２を埋設し、この芯金１２間にスプロケツト
係合孔１４を形成し、且つ中央部７に略係合孔１
４から芯金１２の左右外端に亘る幅を有する周方
向全幅抗張体１６Ａと芯金外端付近の周方向狭幅
抗張体１６Ｂとを埋設したクローラ用弾性履帯に
おいて、 前記中央部７には狭幅抗張体１６Ｂに対応する
接地面９に膨出部１７を形成して接地面９から狭
幅抗張体１６Ｂを有する複層部αまでの肉厚Ｔ１
を全幅抗張体１６Ａのみの単層部βまでの肉厚Ｔ
２に対して略同一以上に設定したことを特徴とす
るクローラ用弾性履帯。[Claims for Utility Model Registration] A main body 6 having a center portion 7 and wing portions 8 on both sides thereof in the width direction is formed into an endless band shape from an elastic material, and is arranged on the ground contact surface 9 side of the main body 6 at equal intervals in the circumferential direction. A lug 10 is integrally provided, a core bar 12 is buried in the center part 7 corresponding to the lug 10, a sprocket engagement hole 14 is formed between the core bars 12, and a substantially engagement hole is formed in the center part 7. 1
4 to the right and left outer ends of the core metal 12, and a narrow circumferential width tension member 16B near the outer end of the core metal are embedded in the elastic crawler track for a crawler, in which: , a bulging portion 17 is formed on the ground plane 9 corresponding to the narrow width tensile body 16B, and the wall thickness T1 from the ground plane 9 to the multilayer part α having the narrow width tensile body 16B is
The wall thickness T up to the single layer part β of the full width tensile member 16A only
1. An elastic crawler belt for a crawler, characterized in that the elastic crawler belt is set to be substantially the same or more than that of 2.