JPS6012787Y2 - elastic track belt - Google Patents

Description

【考案の詳細な説明】 本考案はコンバイン等の農業用車輌、又か同様の車輌に
装着される弾性無限軌道帯に係り、殊に泥地走行用とし
て好適な無限軌道帯（以下クローラと指称する）に係る
。[Detailed description of the invention] The present invention relates to an elastic endless track belt installed on agricultural vehicles such as combine harvesters, or similar vehicles, and is particularly suitable for running on muddy terrain (hereinafter referred to as crawler). related to).

一般に、かかるクローラは牽引力を増大させるために無
端帯状弾性本体の外周表面に突条即ちラグを有しており
、このラグは帯状本体の周方向に一定のピッチ間隔にて
並列形成されているのであるが、湿田等の泥地走行時に
ラグ間に泥土が付着滞留するのを避は得す、そのためラ
グによる牽引機能乃至推進機能が次第に低下し、ついに
はクローラ接地面にあたかもラグが存在しないようなベ
ルト状態になり、その結果牽引力が極度に低下−場合に
ってはスリップして走行できない状態になることさえあ
る。Generally, such crawlers have protrusions or lugs on the outer peripheral surface of the endless band-shaped elastic body in order to increase the traction force, and the lugs are formed in parallel at regular pitch intervals in the circumferential direction of the band-shaped body. However, it is unavoidable that mud adheres and accumulates between the lugs when traveling on muddy areas such as wet fields, and as a result, the traction and propulsion functions of the lugs gradually decrease, and eventually the crawler's ground contact surface becomes as if there were no lugs. As a result, the traction force is extremely reduced - in some cases, the vehicle may even slip and become unable to drive.

かかる点を改善するために、無端帯状弾性本体の側部外
方いひれ状にラグを突出させた構造のクローラが提案さ
れている。In order to improve this problem, a crawler has been proposed that has a structure in which lugs protrude outward from the sides of an endless band-shaped elastic body in the form of fins.

かかるクローラによれば泥地走行時に上記のひれ状部が
それらの間に食に込む泥土を掻くように作用し、そのた
めかりにラグ間に泥土が付着滞留してもひれ状突出部に
よって牽引力が維持される。According to such a crawler, when the crawler runs on muddy ground, the fin-shaped parts act to scrape the mud that gets stuck between them, and therefore, even if mud adheres and accumulates between the lugs, the traction force is maintained by the fin-shaped protrusions. be done.

このようにひれ状突出部によって泥地内にあっても牽引
力がもたらされるのであるが、その反面ひれ状突出部が
クローラのラグ間部分を切り欠いて形成されるために、
クローラの接地面積が減少し接地圧が増大し、その結果
泥土内へのクローラ沈下が生じ易い。In this way, the fin-like protrusions provide traction even in muddy ground, but on the other hand, because the fin-like protrusions are formed by cutting out the part between the lugs of the crawler,
The ground contact area of the crawler decreases and the ground pressure increases, and as a result, the crawler tends to sink into the mud.

クローラが沈下すると、ひれ状突出部の間から泥土がク
ローラ内周面上へ浸入し、これがクローラの回転に従っ
てアイドラ一部にたまり、次いでクローラ側方の未刈取
稲に落ちかかり、その稲を刈り取る際の邪魔となると共
にコンバイン内へ泥土が入り故障の原因となる。When the crawler sinks, mud enters onto the inner surface of the crawler from between the fin-like protrusions, accumulates on a part of the idler as the crawler rotates, and then falls on the unharvested rice on the side of the crawler, and the rice is harvested. Not only does it get in the way when the combine is being used, but it also causes mud to get into the combine and cause it to malfunction.

このような点を回避するために、ひれ状突出部の形成を
無端帯状弾性本体の片側のみに行って接地面積を増大さ
せ、しかもかかるクローラをひれ状突出部の形成領を内
側として車輌機体に接着することにより、クローラ沈下
を少なくおさえると共にクローラ外側方への泥土落下を
微量にすることが提案されている。In order to avoid this problem, the fin-like protrusions are formed only on one side of the endless band-shaped elastic body to increase the ground contact area, and the crawler is attached to the vehicle body with the fin-like protrusion forming area inside. It has been proposed that by adhering the crawler, the sinking of the crawler can be kept to a minimum and the amount of mud falling to the outside of the crawler can be minimized.

しかしながら、このクローラは（両側にひれ状突出部が
ある場合も同様であるが）、ひれ状突出部間からの泥土
の排出は確実に行なわれていくが、ラグ間に詰った泥土
は脱落し難く、従ってラグ全体による充憤は牽引力を常
時発揮させることができない。However, with this crawler (this is also the case when there are fin-like protrusions on both sides), mud is reliably discharged from between the fin-like protrusions, but mud stuck between the lugs does not fall out. Therefore, the traction force cannot be constantly exerted by filling the entire lug.

本考案はかかる欠点を排除することを目的とするもので
あり、その特徴とするところは、無端帯状弾性本体の外
周面に長手方向に一定のピッチにて配列したラグを有し
、更に同じく長手方向に一定間隔おきに順次配列され弾
性本体内に横方向に延伸した状態にて埋め込まれている
芯金を有している弾性無限軌道帯において、上記のラグ
の全部又は一部の一方端が弾性本体の一方側部から側方
へ突出したひれ状部となされ、また弾性本体の他方側部
の方向へのラグの伸延長が１ピツチおきに長短となされ
、更に上記芯金の端部や弾性本体内にとどまっているこ
とである。The present invention is aimed at eliminating such drawbacks, and is characterized by having lugs arranged at a constant pitch in the longitudinal direction on the outer peripheral surface of the endless band-shaped elastic body, and In an elastic endless track belt having core metals arranged sequentially at regular intervals in the direction and embedded in the elastic body in a horizontally extending state, one end of all or a part of the lugs is It is formed into a fin-like part that protrudes laterally from one side of the elastic body, and the extension of the lug in the direction of the other side of the elastic body is made longer or shorter at every other pitch. It remains within the elastic body.

以下添附図面に従って本考案を更に詳細に説明する。The present invention will be described in more detail below with reference to the accompanying drawings.

第１図は図面の上下方向に延伸して無端体となされてい
る本考案の第１実施例によるクローラの外周面の一部分
を示し、第２図は第１図の■−■線による断面図である
。FIG. 1 shows a part of the outer peripheral surface of a crawler according to a first embodiment of the present invention, which is an endless body extending in the vertical direction of the drawing, and FIG. 2 is a sectional view taken along the line ■-■ in FIG. It is.

図中、１はゴム等の弾性材料にて製作される無端帯状弾
性本体、２はこの弾性本体の外周面において周方向に一
定のピッチにて設けたラグ、３は弾性本体の中央部にお
いて周方向に定間隔おきに設けたスプロケット孔であっ
て、このスプロケット孔は通常ラグに対応して埋設され
ている芯金４（第２図）の間に形成されている。In the figure, 1 is an endless band-shaped elastic body made of an elastic material such as rubber, 2 is a lug provided at a constant pitch in the circumferential direction on the outer circumferential surface of this elastic body, and 3 is a circumference in the center of the elastic body. The sprocket holes are provided at regular intervals in the direction, and the sprocket holes are usually formed between the core metals 4 (FIG. 2) embedded corresponding to the lugs.

芯金４の外周側にはクローラの周方向の強度を与えるワ
イヤーコード等より戊る引張補強材５（第２図）が同じ
く弾性本体内に埋設されている。On the outer circumferential side of the core bar 4, a tensile reinforcing material 5 (FIG. 2) made of wire cord or the like that provides strength in the circumferential direction of the crawler is similarly embedded in the elastic body.

第１図に示すように、ラグ２を弾性本体１の一方側部か
ら側方へ突出せしめることによりひれ状突出部６が形成
されている。As shown in FIG. 1, a fin-like protrusion 6 is formed by causing the lug 2 to protrude laterally from one side of the elastic body 1.

このひれ状突出部は弾性本体１の側部のラグ間帯域に切
欠７を設けることにより形成することができる。This fin-like projection can be formed by providing a notch 7 in the lateral interlug zone of the elastic body 1.

かかるひれ状突出部６は前述のように、泥地中でのクロ
ーラの牽引力維持作用を呈する。As described above, the fin-like protrusions 6 function to maintain the traction force of the crawler in muddy ground.

本考案はかかるクローラにおいて、弾性本体１の他方側
部（即ちひれ状突出部３の形成側に対して反対側）の方
向へのラグの伸延長さを１ピツチおきり長短としたので
あって、その結果第１図に示すように、２ピツチに亘る
ロングピッチ部が各ラグ間部分に連接して形成されこと
になる。In the crawler of the present invention, the extension length of the lug in the direction of the other side of the elastic body 1 (i.e., the side opposite to the side on which the fin-like projections 3 are formed) is made longer or shorter every other pitch. As a result, as shown in FIG. 1, a long pitch portion extending over two pitches is formed so as to be connected to the portion between each lug.

このロングピッチ部に入た泥土は極めて容易に抜は落ち
るものであり、その際１ピツ毎のラグ問い詰った泥土を
帯同し、全体的な泥土剥落を促す作用を呈する。The mud that has entered this long pitch area is very easily removed, and at this time, the mud that has accumulated in each pit is carried along with it, and this has the effect of promoting the overall sloughing off of the mud.

もちろん、１ピツチ毎のラグ間に詰った泥土をすべて脱
落排除させ得なくても、ロングピッチ部における排土の
みですでに大きな牽引力向上につながるものである。Of course, even if it is not possible to remove all the mud stuck between the lugs of each pitch, just removing the mud from the long pitch section can already lead to a significant improvement in traction force.

第３図はひれ状突出部６の形成側においたもロングピッ
チ部と設は排土性を高めた実施例を示している。FIG. 3 shows an embodiment in which a long pitch portion and a structure on the side where the fin-like protrusions 6 are formed improve soil removal performance.

第４図はひれ状突出部６を一つおきのラグ２の延長部に
設け、しかも介在するラグ２を短縮してその両側にロン
グピッチ部を設けた他の実施例を示している。FIG. 4 shows another embodiment in which fin-like protrusions 6 are provided on the extensions of every other lug 2, and the intervening lugs 2 are shortened to provide long pitch portions on both sides thereof.

第５図に示す実施例においては、スプロケット孔を境に
して、その一方側、即ちひれ状突出部形成側のラグを１
ピツチおきに長短となして中央部附近にロングピッチ部
を設け、また他方側のラグは２ピツチおきに設けである
。In the embodiment shown in FIG. 5, the lug on one side of the sprocket hole, that is, on the side where the fin-like protrusion is formed, is
Long and short pitches are provided at every other pitch, and a long pitch section is provided near the center, and lugs on the other side are provided at every 2 pitches.

第６図は千鳥状に配列したラグを有するクローラに本考
案を適用した場合の実施例を示している。FIG. 6 shows an embodiment in which the present invention is applied to a crawler having lugs arranged in a staggered manner.

以上のように本考案によれば、ひれ状突出部を設けたこ
とにより泥地における牽引力の向上を得ることができる
と共にそれを片側にのみ設けたことにより接地圧が低下
してクローラ沈下量が減少し、更にひれ状突出部を車輌
機体の内側に配することにより沈下量の減少と相俟って
クローラ外側方への未刈取稲上への泥土落下量が僅少化
し、その上ロングピッチ部の泥はけとそれに誘発される
１ピツチラグ間からの排土によって泥地中でのクローラ
の牽引性能を大きく向上させるとかできるものである。As described above, according to the present invention, by providing the fin-like protrusion, it is possible to improve the traction force on muddy ground, and by providing it only on one side, the ground pressure is reduced and the amount of crawler sinking is reduced. Furthermore, by arranging the fin-like protrusions inside the vehicle body, the amount of settling is reduced, and the amount of mud falling on the unharvested rice toward the outside of the crawler is minimized. The traction performance of the crawler in muddy ground can be greatly improved by mud drainage and the resulting soil removal from between the pitch lugs.

また、芯金の端部は弾性本体内にとどまっており、即ち
芯金端部がひれ状突出部に達していないので、軌道帯本
体に対するひれ状突出部の動きは自由になり、軌道帯走
行中に生じる前後及び上下の自由な動きによって、巻き
付いた藁や稲の根が外れ易く、従ってひれ状突出部の推
進作用が維持できるものである。In addition, since the end of the core metal remains within the elastic body, that is, the end of the core metal does not reach the fin-like protrusion, the movement of the fin-like protrusion with respect to the track belt main body is free, and the track belt runs smoothly. The free back and forth and up and down movements that occur inside the tube facilitate the release of entangled straw and rice roots, thus maintaining the propulsion effect of the fin-like protrusions.

更に、芯金端部がひれ状突出部内に達していないことに
より、軌道帯走行中に内側の部分が段部等に乗り上げて
傾斜た場合に、ひれ状突出部に力がかかつて変形しても
芯金端部からの影響は受けないので、ひれ状突出部の一
個所に荷重が集中するということはなく、従って亀裂の
発生を回避できるので軌道帯の耐久性を向上させること
ができる。Furthermore, because the end of the core metal does not reach inside the fin-like protrusion, when the inner part rides on a step or the like while the track belt is running, the force is applied to the fin-like protrusion and it deforms. Since the load is not affected by the end portion of the core metal, the load is not concentrated on one location of the fin-like protrusion, and therefore, the occurrence of cracks can be avoided, and the durability of the raceway band can be improved.

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

第１図は本考案によるクローラの一部を外周面側から見
た平面図、第２図は第１図の■−■線に沿う断面図、第
３図乃至第６図はそれぞれ本考案の他の実施例を示す平
面図である。 尚、図示された主要部と符号との対応関係は以下の通り
である。 １・・・・・・無端帯状弾性本体、２・・・・・・ラグ
、６・・・・・・ひれ状突出部。Fig. 1 is a plan view of a part of the crawler according to the present invention viewed from the outer peripheral side, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Figs. FIG. 7 is a plan view showing another embodiment. The correspondence relationship between the main parts shown and the symbols is as follows. 1...Endless band-shaped elastic body, 2...Lug, 6...Fin-like protrusion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 無端帯状弾性本体の外周面に長手方向に一定のピッチに
て配列したラグを有し、更に同じく長手方向に一定間隔
おきに順次配列され弾性本体内に横方向に延伸した状態
にて埋め込まれている芯金を有している弾性無限軌道帯
において、上記のラグの全部又は一部の一方端が弾性本
体の一方側部から側方へ突出したひれ状部となされ、ま
た弾性本体の他方側部お方向へのラグの伸延長さが１ピ
ツチおきに長短となされ、更に上記芯金の端部が弾性本
体内にとどまっていることを特徴とする弾性無限軌道帯
。The endless belt-shaped elastic body has lugs arranged at a constant pitch in the longitudinal direction on the outer peripheral surface thereof, and the lugs are also sequentially arranged at constant intervals in the longitudinal direction and embedded in the elastic body in a horizontally extending state. In an elastic endless track belt having a core bar, one end of all or a part of the lugs is formed into a fin-like part projecting laterally from one side of the elastic body, and the other end of the elastic body is An elastic endless track belt characterized in that the extension length of the lug in the direction of the elastic body is made longer or shorter at every other pitch, and further, the end of the core metal remains within the elastic body.