JPH0829725B2 - Rubber track - Google Patents
Rubber trackInfo
- Publication number
- JPH0829725B2 JPH0829725B2 JP1176300A JP17630089A JPH0829725B2 JP H0829725 B2 JPH0829725 B2 JP H0829725B2 JP 1176300 A JP1176300 A JP 1176300A JP 17630089 A JP17630089 A JP 17630089A JP H0829725 B2 JPH0829725 B2 JP H0829725B2
- Authority
- JP
- Japan
- Prior art keywords
- lug
- rubber crawler
- crawler belt
- adjacent
- rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Vibration Prevention Devices (AREA)
- Tires In General (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は装軌車両のゴム履帯に係り、特にブルドーザ
や油圧ショベル等の建設機械のゴム履帯に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber track of a tracked vehicle, and more particularly to a rubber track of a construction machine such as a bulldozer or a hydraulic excavator.
（従来の技術） 従来から第５図に示すように路面の保護と騒音・振動
対策のために鉄製履帯に変えてゴム製の無限履帯21を装
着したブルドーザ等の装軌車両においては、遊動輪23と
起動輪22との間に設けたトラックフレーム24の上にそれ
ぞれ複数個の上転輪25および下転輪26とを設け、これら
各輪に履帯21を巻装して起動輪22に伝達された動力によ
り車両が走行するようになっている。そしてこのように
使用される履帯は騒音や振動の対策のため、近年では従
来の鉄製に変えてゴム一体型の履帯を履きかえ装着でき
るようにしたゴム履帯がある。そしてゴム履帯と起動輪
との噛合いは、起動輪の奇数歯に対して１歯飛びで履帯
と噛合っていた。これは起動輪歯を奇数にすることによ
って１回転すると１ピッチずれた次の歯に噛合うことに
なり、起動輪の歯の摩耗をできるだけ減らすようにする
理由によるものである。(Prior Art) Conventionally, as shown in FIG. 5, in a tracked vehicle such as a bulldozer in which an endless track 21 made of rubber is used instead of an iron track for protection of road surface and noise and vibration, an idle wheel is used. A plurality of upper rolling wheels 25 and lower rolling wheels 26 are provided on a track frame 24 provided between the 23 and the starting wheel 22, and the crawler belt 21 is wound around each of these wheels and transmitted to the starting wheel 22. The vehicle is driven by the generated power. In order to prevent noise and vibration, the crawler track used in this way has recently been replaced by a conventional iron crawler track so that a rubber-integrated crawler track can be replaced and mounted. The rubber crawler belt and the starting wheel mesh with the crawler belt by skipping one tooth with respect to the odd number tooth of the starting wheel. This is because the teeth of the starting wheel are meshed with the next tooth which is shifted by one pitch after one rotation by making the teeth of the starting wheel an odd number, and the wear of the teeth of the starting wheel is reduced as much as possible.
（発明が解決しようとする課題） しかしながら、上述の従来のゴム履帯の場合は履帯ピ
ッチが大きくなり、隣り合う履帯間に角度ができて起動
輪や遊動輪に巻き付けたとき、屈曲角が大きくなるため
ラグ側ゴムの歪み率が大きくなって亀裂が入り易くなり
ゴムの耐久性に問題があった。ゴム履帯の移動方向に対
して直角方向に一定間隔でもって、ゴム29に埋設されて
いる隣接する芯金27間の距離が広くなるため、下転輪が
芯金の転動面15を走行する際に隣接する芯金間の間隙に
落ち込み足回りの振動が大きくなり騒音が発生する欠点
がある。(Problems to be solved by the invention) However, in the case of the above-mentioned conventional rubber crawler belt, the crawler belt pitch becomes large, and an angle is formed between the adjacent crawler belts, and the bending angle becomes large when wound around the starter wheel or the idler wheel. Therefore, the strain rate of the rubber on the lug side becomes large and cracks easily occur, and there is a problem in the durability of the rubber. Since the distance between the adjacent cored bars 27 embedded in the rubber 29 is widened at regular intervals in the direction perpendicular to the moving direction of the rubber crawler belt, the lower rolling wheel travels on the rolling surface 15 of the cored bar. At this time, there is a drawback that the vibration falls around the space between the adjacent cored bars and the vibration around the undercarriage increases to generate noise.
こうした欠点を解決するため起動輪の歯を１歯とびで
はなく、全歯を芯金噛合係合部に噛合わせることによっ
て、芯金の数を倍増し、ゴム履帯の屈曲角を小さくする
ゴム履帯（以下ショートピッチ型ゴム履帯と呼ぶ）があ
る。In order to solve these drawbacks, not all the teeth of the starting wheel are skipped, but all the teeth are meshed with the core metal meshing engagement portion, thereby doubling the number of core metal and reducing the bending angle of the rubber track. (Hereinafter referred to as short pitch type rubber crawler).
このゴム履帯は従来のゴム履帯にくらべ芯金の数が増
えるので、ゴム履帯の長さが変わらない限り芯金の履帯
前後方向の幅が狭くなる。Since this rubber crawler has more cores than the conventional rubber crawler, the width of the cored bar in the front-back direction of the crawler becomes narrow unless the length of the rubber crawler changes.
従って、芯金１個当りの履帯で受ける車体の荷重を同
じとすると、例えば車体が石等に乗り上げると履帯で車
体荷重を受けるためにショートピッチ型ゴム履帯では幅
が狭くなった芯金の曲げ強度が落ち、撓み易くなる。そ
の結果ゴム履帯が横断面方向に変形を受けて芯金からゴ
ムが剥離し、ラグの寿命が低下する。Therefore, assuming that the load of the vehicle body received by the crawler belt per core metal is the same, for example, when the vehicle body rides on a stone or the like, the vehicle body load is received by the crawler belt. The strength decreases and it becomes easy to bend. As a result, the rubber crawler belt is deformed in the cross-sectional direction and the rubber is peeled off from the core metal, which shortens the life of the lug.
また従来のショートピッチ型ゴム履帯は、ラグが１個
の芯金投影面上に形成され、ゴム履帯の移動方向と直角
方向に設けられており、ラグの接地は連続していない。Further, in the conventional short pitch type rubber crawler belt, the lug is formed on one core bar projection surface and is provided in the direction perpendicular to the moving direction of the rubber crawler belt, and the lug is not continuously grounded.
従って、ラグの頂部面積を大きくしようとしても、限
られた芯金の面積内でラグ形状を選定する自由度が少な
いため限度がある。Therefore, even if an attempt is made to increase the top area of the lug, there is a limit because there is little freedom in selecting the lug shape within the limited area of the cored bar.
また、ラグとラグとの間の凹み部における土の剪断面
積が小さくなって剪断力が低下する。更にラグに土が付
着し易く土離れが不良となり良好な排出作用は期待でき
ない。Further, the shearing cross-sectional area of the soil in the recessed portion between the lugs is reduced, and the shearing force is reduced. Furthermore, soil is likely to adhere to the rug and the soil is not easily detached, so a good discharging action cannot be expected.
そこで、必要な土の剪断面積を確保するために隣接す
るラグの間隔を拡げようすると、ラグの頂部面積を減じ
ざるを得ずその結果ラグの面圧が高まり摩耗が摩し、ラ
グの剛性低下につながる。Therefore, if the space between adjacent lugs is expanded to secure the necessary shearing area of soil, the top area of the lugs must be reduced, resulting in increased surface pressure of the lugs and abrasion, which reduces the rigidity of the rugs. Leads to.
ラグの剛性が低下すると、走行時に下転輪が移動する
際、ラグが撓み易くなり下転輪の落ち込みで車両の上下
振動が発生し易くなる。When the rigidity of the lug decreases, the lug is likely to bend when the lower wheel moves during traveling, and the vertical vibration of the vehicle easily occurs due to the lower wheel falling.
更に、ゴム履帯の剛性が低下すると、旋回走行時に
は、ゴム履帯は横方向の力を受けるためゴム履帯と起動
輪との噛合いが外れて履帯外れを起こすという問題があ
る。Further, if the rigidity of the rubber crawler belt is reduced, the rubber crawler belt receives a lateral force during turning, which causes a disengagement between the rubber crawler belt and the starting wheel, resulting in the crawler belt disengagement.
本発明は、これに鑑み接地面側のラグ形状をゴム履帯
の幅方向中央部分と、その幅方向中央部分から履帯の端
面にかけて、それぞれ左右方向に順次遠ざけるように分
岐し、かつ、その分岐は左右千鳥型で連続させながら隣
り合う３個以上の芯金投影面上に跨がるように構成して
ある。In view of this, the present invention branches the lug shape on the ground contact side into the widthwise central portion of the rubber crawler belt, and from the widthwise central portion to the end surface of the crawler belt so as to be distant from each other in the lateral direction, and the branching is The left and right staggered patterns are arranged so as to straddle three or more adjacent core metal projection planes while being continuous.
また、隣り合うラグ間の谷間が中央部から履帯の端部
に向かって末広がりに構成して、芯金とゴムとの剥離が
防止され、ラグ寿命を確保し、土の排出を容易にし、車
両牽引力の低下を防止できる。更に、ゴム履帯の剛性が
確保出来るので、車両の上下振動を最小限に抑えること
ができ、それによって起るゴム履帯外れを防止すること
ができるショートピッチ型のゴム履帯を提供することを
目的とする。In addition, the valley between adjacent lugs is configured to widen toward the end of the crawler belt from the center to prevent separation of the core metal and rubber, ensuring lug life and facilitating soil discharge, It is possible to prevent a decrease in traction force. Further, since the rigidity of the rubber crawler belt can be secured, it is an object of the present invention to provide a short-pitch type rubber crawler track that can suppress vertical vibration of the vehicle to a minimum and prevent the rubber crawler belt from coming off. To do.
（課題を解決するための手段） 上記目的を達成するために、本発明に係るゴム履帯
は、 （１）起動輪との噛合係合部と、転動輪の転動レール面
を持つ金属芯金を帯状方向へ並列に起動軸歯の全歯と噛
合うピッチで配置し、幅方向中央部の隣合う芯金間に起
動輪との噛合係合穴を設けたゴム履帯において、接地面
側に設けるラグを、幅方向中央部分と、該幅方向中央部
分から端面にかけてそれぞれ左右方向に順次遠ざかる分
岐部分とで構成し、帯状方向の全長にわたって連続した
ラグとすると共に、該分岐部分は３個以上の芯金投影面
に跨るように形成し、且つ左右の分岐部分は互いに千鳥
型となるように配置した構成としたものである。(Means for Solving the Problems) In order to achieve the above object, a rubber crawler belt according to the present invention has (1) a metal cored bar having a meshing engagement portion with a starting wheel and a rolling rail surface of a rolling wheel. Are arranged in parallel in the belt-like direction at a pitch that meshes with all the teeth of the starting shaft teeth, and in the rubber crawler track in which a meshing engagement hole with the starting wheel is provided between the adjacent cores in the widthwise central part, on the grounding surface side. The lug to be provided is composed of a central portion in the width direction and branch portions which are sequentially distant from each other in the left-right direction from the central portion in the width direction to the end face, and is a continuous lug over the entire length in the strip-like direction, and the branch portion is three or more. Is formed so as to straddle the core metal projection surface, and the left and right branch portions are arranged in a zigzag pattern with respect to each other.
（２）上記構成において、前記ラグは、隣合う噛合係合
穴の間に設けた中央部分と、噛合係合穴を挟んで隣合う
２個の中央部分に連続する分岐部分とによって、噛合係
合穴の３方を囲むように形成し、帯状方向の全周にわた
って千鳥状に連続した構成としたものである。(2) In the above-mentioned structure, the lug is engaged with the central portion provided between the adjacent engaging engagement holes and the branch portion continuous with the two adjacent central portions sandwiching the engaging engagement hole. It is formed so as to surround three sides of the dowel, and is configured in a zigzag manner over the entire circumference in the band-like direction.
（３）また、前記ラグの分岐部分は、左右で芯金１ピッ
チだけずらし互いに千鳥型となるよう配設した構成とし
たものである。(3) Further, the branch portions of the lugs are arranged so as to be staggered with respect to each other by shifting by one pitch the core metal on the left and right.
（４）更に、前記ラグの分岐部分はそれぞれ隣合う３個
以上の芯金投影面を連続して斜めに横断するように形成
したものである。(4) Further, the branch portions of the lugs are formed so as to continuously and diagonally cross three or more adjacent core metal projection surfaces.
（５）また、前記ラグの分岐部分はそれぞれ隣合う３個
以上の芯金投影面を連続して斜めに横断するように、且
つ、接地面で中央部から幅方向端部に向かって斜め方向
へ遠ざかるように形成したものである。(5) Further, the branch portions of the lugs are arranged so as to cross diagonally three or more adjacent metal bar projection planes in a continuous diagonal manner, and in a diagonal direction from the central portion to the widthwise end portion at the ground contact surface. It is formed so as to move away from.
（６）更に、前記ラグの分岐部分の帯状方向長さを、履
帯の中央部から左右端部に向かって遠ざかるに従って次
第に短くなるように形成したものである。(6) Further, the length of the branch portion of the lug in the belt-like direction is gradually shortened as the distance from the central portion of the crawler belt increases toward the left and right end portions.
（７）また、前記ラグの分岐部分は、その頂面と基部と
の間に形成される斜面のうち帯状方向前後の一方を緩傾
斜とし、他方は急傾斜とした構成としたものである。(7) In addition, the branch portion of the lug has a configuration in which one of the slopes formed between the top surface and the base portion has a gentle slope in one of the front and rear sides in the strip direction and the other has a steep slope.
（８）更に、前記ラグの分岐部分の頂面と基部との間に
形成される斜面のうち緩傾斜とした斜面は、履帯の中央
部から左右端部に向かって遠ざかるに従って次第に緩い
傾斜となるように形成したものである。(8) Further, among the slopes formed between the top surface and the base portion of the branch portion of the lug, the slope having a gentle slope gradually becomes gentle as it goes away from the center of the crawler belt toward the left and right ends. It is formed as follows.
（９）また、前記ラグは、隣合う芯金間の部分を左右の
分岐部分が共に２箇所以上で横断するように形成したも
のである。(9) Further, the lug is formed such that the left and right branched portions both traverse the portion between the adjacent metal cores at two or more locations.
（10）そして、前記ラグと隣合うラグとの間に形成され
る凹部は、履帯幅方向の中央部よりも端部の方を広く
し、断面を底部にアールを付けた三角形状または台形形
状としたものである。(10) And, the recess formed between the lug and the adjacent lug has a triangular shape or a trapezoidal shape in which the end portion is wider than the center portion in the crawler belt width direction and the cross section has a rounded bottom. It is what
（作 用） 起動輪の全歯に噛合いを行うショートピッチゴム履帯
は、ラグの形状を帯状方向の全長に渡って連続にすると
ともに、分岐部分は３個以上の芯金投影面に跨るように
形成したので、ラグの接地面積を大きく取ることがで
き、この結果、接地荷重は分散されてラグ頂部の面圧が
低下する。(Working) The short pitch rubber crawler belt that meshes with all the teeth of the starter wheel has a lug shape that is continuous over the entire length in the belt-like direction, and the branch portion extends over three or more core metal projection surfaces. Since it is formed on the lug, the contact area of the lug can be made large, and as a result, the contact load is dispersed and the surface pressure at the top of the lug is reduced.
ラグの千鳥型配置は、一方では隣り会うラグ間の凹部
の面積をも広くすることになり、この結果、土の剪断力
は増加して、車両の牽引力が増加する。The staggered arrangement of lugs, on the other hand, also increases the area of the recess between adjacent lugs, which results in increased soil shear and vehicle traction.
また、ラグ間の凹部には急斜面から緩斜面に続く底部
を設け、３次元方向の土の剪断力が得られる構成にした
ので、牽引力は一層増加させることが可能になる。Further, since the recessed portion between the lugs is provided with a bottom portion continuing from the steep slope to the gentle slope so that the shearing force of the soil in the three-dimensional direction can be obtained, the traction force can be further increased.
更に、ラグ形状は、前記の如く帯状方向の全長に渡っ
て連続しているので、ゴム履帯の剛性は高くなり、この
結果、車体振動が減ることにより、ラグの凹部に捕えら
れた土砂は振動で破壊することがない。Furthermore, since the lug shape is continuous over the entire length in the belt-like direction as described above, the rigidity of the rubber crawler belt is increased, and as a result, the vehicle body vibration is reduced, and the sand trapped in the recess of the lug vibrates. There is no destruction.
また、ラグの凹部の形状は、履帯の端に行く程、拡大
する（末広がり）形状としたので、土の排出が容易とな
る。Further, since the shape of the concave portion of the lug is such that it expands toward the end of the crawler belt (expands toward the end), the soil can be easily discharged.
（実施例） 以下に、本発明に係るゴム履帯の一実施例を第１図乃
至第３図を参照して詳述する。(Embodiment) An embodiment of the rubber crawler belt according to the present invention will be described in detail below with reference to FIGS. 1 to 3.
先ず、ブルドーザ等の装軌車両のゴム履帯のラグを第
１図（ａ），（ｂ）により説明する。接地側となるラグ
９の頂部9aを連続した面に形成したものであり、前記ラ
グ９の頂部9aを幅方向を中心にして互いに交差するよう
にしており、所謂、千鳥型としている。この千鳥型を構
成するラグ９の分岐部分10、10a11、11aは幅方向中心線
に対して左右非対称に配置されている。しかし、本実施
例では分岐部分10、10a、11、11aの形状は同一となって
いる。First, a rubber crawler track lug of a tracked vehicle such as a bulldozer will be described with reference to FIGS. 1 (a) and 1 (b). The top portion 9a of the lug 9 on the ground contact side is formed on a continuous surface, and the top portions 9a of the lug 9 intersect each other with the width direction as the center, which is a so-called staggered shape. The branch portions 10, 10a11, 11a of the lug 9 forming the staggered shape are arranged asymmetrically with respect to the center line in the width direction. However, in this embodiment, the branch portions 10, 10a, 11 and 11a have the same shape.
このラグ９の分岐部分10、10a、11、11aは幅方向中心
から端部にかけて３個以上の芯金３、３、３間に跨るよ
うに形成したものである。The branch portions 10, 10a, 11, 11a of the lug 9 are formed so as to straddle three or more core bars 3, 3, 3 from the center in the width direction to the end.
起動輪の歯と噛合係合穴７は、上記分岐部分10、10
a、11、11aの中央部での交差によりコの字状に囲むよう
に形成されている。The teeth of the starting wheel and the meshing engagement hole 7 are formed in the branch portions 10 and 10 described above.
It is formed so as to surround in a U shape by intersecting at the central portions of a, 11, and 11a.
そして、ラグ９の頂部9aの分岐部分10、10a、11、11a
はラグ９の幅方向中心線から端部に向けてその幅が漸次
狭まくなる形状となっている。And the branch portions 10, 10a, 11, 11a of the top 9a of the lug 9
Has a shape in which the width gradually narrows from the center line in the width direction of the lug 9 toward the end.
また、隣り合うラグ９、９間の凹部12を中央部より端
部の方を広くし、各凹部の断面を三角状又は台形状とし
たことにより走行時の土砂の流れ、すなわち中央部の狭
い所の起動輪の噛合係合穴７から土砂を食い込んでも端
部を広くしたので土離れが良好となる。Further, the recess 12 between the adjacent lugs 9, 9 is wider at the end than at the center, and the cross section of each recess is triangular or trapezoidal, so that the flow of sediment during traveling, that is, the central part is narrow. Even if the earth and sand bite into the meshing engagement hole 7 of the starting wheel at some place, the end portion is widened, so that the soil can be removed easily.
また、第１図（ｂ）に示すように１つのラグ９とそれ
に隣り会うラグ９との間の凹部12は急傾斜20aと緩傾斜2
0b及び底部20cで形成されている。Further, as shown in FIG. 1 (b), the recess 12 between one lug 9 and the lug 9 adjacent thereto has a steep slope 20a and a gentle slope 2a.
It is formed by 0b and the bottom portion 20c.
急傾斜20aは牽引力を発生させるために傾斜を急勾配
にしてあり、また、緩傾斜20bは排土を良好にするため
に急傾斜20aより緩やかな傾斜としてある。The steep slope 20a has a steep slope in order to generate a traction force, and the gentle slope 20b has a gentler slope than the steep slope 20a in order to improve soil removal.
更にまた、第１図（ａ）に示すようにラグの分岐部1
0、10a、11、11aの頂部と底部との間に形成される斜面
のうち緩傾斜20bとした斜面は履帯の中央部から左右端
部に向かうに従って次第に緩い傾斜となるように形成し
てある。Furthermore, as shown in FIG. 1 (a), the lug bifurcation 1
Of the slopes formed between the top and bottom of 0, 10a, 11, 11a, the slope 20b is formed to have a gentle slope from the center of the track toward the left and right ends. .
これによって、ラグによって掘削された土砂が更に排
土し易くなる。This makes it easier to remove the earth and sand excavated by the lag.
また、ラグ９は、隣り合う芯金３、３間の部分を左右
の分岐部分10、10a、11、11aが共に２個所以上で横断す
るように形成してある。The lug 9 is formed such that the left and right branch portions 10, 10a, 11 and 11a cross the portion between the adjacent cored bars 3 and 3 at two or more locations.
これによって、接地荷重がラグ９を通じて２個以上の
芯金３、３、に分散される。As a result, the ground load is distributed to the two or more cored bars 3, 3 through the lug 9.
前記ラグ９とそれぞれ互いに隣り合うラグ９との凹部
12はラグの頂部9aから隣り合うラグ９の頂部9aに至るま
でを急傾斜20a、底部20c、緩傾斜20bで形成してある。
これにより履帯駆動力による土を剪断する面積が大きく
なり、牽引力の増加に役立つことになる。Recesses between the lug 9 and the lugs 9 adjacent to each other
12 is formed by a steep slope 20a, a bottom 20c and a gentle slope 20b from the top 9a of the lug 9 to the top 9a of the adjacent lug 9.
As a result, the area for shearing the soil due to the crawler belt driving force is increased, which helps increase the traction force.
第２図は本発明に係るゴム履帯１の内側からみた平面
図、第３図は第２図のＡ−Ａ線断面図を示す。2 is a plan view seen from the inside of the rubber crawler belt 1 according to the present invention, and FIG. 3 is a sectional view taken along the line AA of FIG.
第２図に示すゴム履帯１には前述のように長手方向に
対して直角かつ平行に多数の芯金３がゴム２内に埋設さ
れ、各芯金３の幅方向中央部には一対の突起状の転輪ガ
イド面14、14が設けられ、転輪ガイド14、14両外側には
転動レール面15、15が転輪ガイド面14と平行になるよう
に長手方向にそれぞれ設けられて、この転動レール面1
5、15上を図示しない下転輪が転動するようになってい
る。In the rubber crawler belt 1 shown in FIG. 2, a large number of metal cores 3 are embedded in the rubber 2 at right angles to and parallel to the longitudinal direction as described above, and a pair of protrusions is provided at the center of each metal core 3 in the width direction. -Shaped rolling wheel guide surfaces 14, 14 are provided, and rolling rail surfaces 15, 15 are provided on both outer sides of the rolling wheel guides 14, 14 in the longitudinal direction so as to be parallel to the rolling wheel guide surface 14, respectively, This rolling rail surface 1
Lower wheels (not shown) roll on the upper parts of the wheels 5 and 15.
芯金３の中央部分には起動輪の歯の底と噛合う噛合係
合部16が形成され、また、この噛合係合部16と隣り合う
芯金３の噛合係合部16との間で起動輪の歯が挿入される
噛合係合穴７がゴム履帯１の幅方向中央のゴム部分に形
成されている。A meshing engagement portion 16 that meshes with the bottom of the teeth of the starting wheel is formed in the central portion of the core metal 3, and between this meshing engagement portion 16 and the meshing engagement portion 16 of the adjacent core metal 3. A meshing engagement hole 7 into which the teeth of the starting wheel are inserted is formed in the rubber portion of the rubber crawler belt 1 at the center in the width direction.
次に第３図に示す芯金３の翼部3aの下側のゴム２内に
は該翼部3aの下面に接近してスチール製のケーブル17が
ゴム履帯１の前後方向全長にわたって翼部3aの幅方向に
沿って埋設されている。このケーブル17に対応して翼部
3aの上面のゴム２内には翼部3aの上にスチール製のコー
ドを交差したバイアス18がゴム履帯１の前後方向全長に
わたって翼部3aの幅方向に沿って埋設されている。Next, in the rubber 2 on the lower side of the wing portion 3a of the core metal 3 shown in FIG. 3, a steel cable 17 is provided close to the lower surface of the wing portion 3a over the entire length of the rubber crawler belt 1 in the front-rear direction. It is buried along the width direction of. Wings corresponding to this cable 17
In the rubber 2 on the upper surface of 3a, a bias 18 crossing a steel cord is embedded on the wing portion 3a along the width direction of the wing portion 3a over the entire length of the rubber crawler belt 1 in the front-rear direction.
これによりゴム履帯の剛性が向上し、ゴム履帯１が伸
びにくくなるから、旋回走行の際、ゴム履帯に作用する
横方向の力によってゴム履帯１の横ズレを抑制すること
ができる。As a result, the rigidity of the rubber crawler belt is improved, and the rubber crawler belt 1 is less likely to expand. Therefore, the lateral displacement of the rubber crawler belt 1 can be suppressed by the lateral force acting on the rubber crawler belt during turning.
その結果、ゴム２と芯金３との剥離ならびにゴム履帯
外れが防止できる。As a result, it is possible to prevent the rubber 2 and the core metal 3 from peeling off and the rubber crawler belt from coming off.
第４図は本発明によるゴム履帯１を車体19の足回り部
分に装着し、ラグ９が車体19の前方から見て略Ｖ字型と
なるようにした状態を示している。このようにすると牽
引力は大となるのみならず、土離れも良くすることがで
きる。FIG. 4 shows a state in which the rubber crawler belt 1 according to the present invention is attached to the underbody portion of the vehicle body 19 so that the lug 9 has a substantially V shape when viewed from the front of the vehicle body 19. In this way, not only the traction force becomes large, but also soil removal can be improved.
（発明の効果） 以上説明したように本発明に係わるゴム履帯によれば
以下のような効果を奏する。(Effects of the Invention) As described above, the rubber crawler belt according to the present invention has the following effects.
（１）ラグの形状を帯状方向の全長に渡って連続にする
とともに、分岐部分は３個以上の芯金投影面に跨がるよ
うに形成したので、ラグの接地面積を大きく取ることが
でき、この結果、接地荷重は分散されてラグ頂部の面圧
が低下し、ラグの摩耗寿命が長くなる。(1) Since the shape of the lug is continuous over the entire length in the belt-like direction, and the branch portion is formed so as to extend over three or more core metal projection surfaces, it is possible to take a large contact area of the lug. As a result, the ground contact load is dispersed, the surface pressure at the top of the lug is reduced, and the wear life of the lug is extended.
（２）ラグの千鳥型配置は、隣り合うラグ間の凹部の面
積を広く取れるので、この結果、土の保持量が多くな
り、土の剪断力は増加して、車両の牽引力が増加する。(2) In the staggered arrangement of lugs, the area of the recess between the adjacent lugs can be made large, and as a result, the amount of soil retained increases, the shearing force of the soil increases, and the traction force of the vehicle increases.
（３）また、ラグ間の凹部には急斜面から緩斜面に続く
底部を設け、３次元方向の土の剪断力が得られる構成に
したので、牽引力は一層増加させることが可能になる。(3) Further, since the recesses between the lugs are provided with a bottom portion continuing from the steep slope to the gentle slope, the shear force of the soil in the three-dimensional direction is obtained, so that the traction force can be further increased.
（４）ラグの形状は、前記の如く帯状方向の全長に渡っ
て連続しているので、ゴム履帯の剛性が高く、車体振動
が減ることにより、ラグの凹部に捕えられた土砂は振動
で破壊することがなく、車両の牽引力を増加させること
が可能になる。(4) Since the shape of the lug is continuous over the entire length in the belt-like direction as described above, the rigidity of the rubber crawler belt is high and the vibration of the vehicle body is reduced. It is possible to increase the traction force of the vehicle without doing so.
（５）また、ラグの凹部の形状は、履帯の端に行く程、
拡大する（末広がり）形状としたので土の排出が容易と
なり、従来のゴム履帯のようにラグ間の土詰まりによる
履帯滑りがなく、牽引力の増加とともにラグの摩耗を減
少させる。(5) Also, the shape of the recess of the lug is such that as it goes to the end of the track,
Since the shape is enlarged (spreading out), soil can be easily discharged, and there is no slippage of the crawler due to clogging between the lugs unlike conventional rubber crawler tracks, and traction wear is reduced as traction increases.
第１図は本発明のゴム履帯用ラグの実施例を示すもの
で、（ａ）は接地側から見た平面図、（ｂ）は（ａ）の
側面図、第２図はゴム履帯の内側からみた平面図。第３
図は第２図のＡ−Ａ線断面図、第４図は本発明のゴム履
帯が車体に装着された状態を示す正面図、第５図は従来
のゴム履帯を装着した車両の足回りの側面図、第６図は
従来のゴム履帯の構造を示す断面図である。 （符号の説明） １……ゴム履帯、２……ゴム、３……芯金、3a……翼
部、７……噛合係合穴、９……ラグ、9a……頂部、10,1
0a,11,11a……分岐部分、12……凹部、19……車体、20a
……急傾斜、20b……緩傾斜、20c……底部。FIG. 1 shows an embodiment of a rubber crawler belt lug according to the present invention. (A) is a plan view seen from the ground side, (b) is a side view of (a), and FIG. 2 is the inside of the rubber crawler track. The plan view seen from above. Third
FIG. 4 is a sectional view taken along the line AA in FIG. 2, FIG. 4 is a front view showing a state where the rubber crawler belt of the present invention is mounted on the vehicle body, and FIG. A side view and FIG. 6 are sectional views showing the structure of a conventional rubber crawler belt. (Explanation of symbols) 1 ... rubber crawler belt, 2 ... rubber, 3 ... core metal, 3a ... wing portion, 7 ... interlocking engagement hole, 9 ... lug, 9a ... top portion, 10,1
0a, 11,11a …… Branch part, 12 …… Concave part, 19 …… Body, 20a
... steep, 20b ... gentle, 20c ... bottom.
Claims (10)
ール面を持つ金属芯金を帯状方向へ並列に起動軸歯の全
歯と噛合うピッチで配置し、幅方向中央部の隣合う芯金
間に起動輪との噛合係合穴を設けたゴム履帯において、
接地面側に設けるラグを、幅方向中央部分と、該幅方向
中央部分から端面にかけてそれぞれ左右方向に順次遠ざ
かる分岐部分とで構成し、帯状方向の全長にわたって連
続したラグとすると共に、該分岐部分は３個以上の芯金
投影面に跨るように形成し、且つ左右の分岐部分は互い
に千鳥型となるように配置したことを特徴とするゴム履
帯。Claim: What is claimed is: 1. A meshing engagement portion with a starting wheel and a metal core having a rolling rail surface of a rolling wheel are arranged in parallel in a belt-like direction at a pitch that meshes with all the teeth of the starting shaft tooth, and a center in the width direction. In the rubber crawler track in which a meshing engagement hole with the starting wheel is provided between the cores adjacent to each other,
The lug provided on the ground contact surface side is composed of a widthwise central portion and a branching portion that is distant from the widthwise central portion toward the end face in the left-right direction, respectively, to form a continuous lug over the entire length in the strip-shaped direction, and the branching portion. Is a rubber crawler track characterized in that it is formed so as to straddle three or more core metal projection surfaces, and the left and right branch parts are arranged in a zigzag pattern.
た中央部分と、噛合係合穴を挟んで隣合う２個の中央部
分に連続する分岐部分とによって、噛合係合穴の３方を
囲むように形成し、帯状方向の全周にわたって千鳥状に
連続したことを特徴とする請求項１記載のゴム履帯。2. The lug has a meshing engagement hole formed by a central portion provided between adjacent meshing engagement holes and a branch portion continuous with two adjacent central portions sandwiching the meshing engagement hole. 2. The rubber crawler belt according to claim 1, wherein the rubber crawler belt is formed so as to surround the three sides and is continuous in a zigzag manner over the entire circumference in the belt-like direction.
チだけずらし互いに千鳥型となるよう配設したことを特
徴とする請求項１記載のゴム履帯。3. The rubber crawler belt according to claim 1, wherein the branch portions of the lugs are arranged so as to be staggered with respect to each other by shifting one core bar from each other by one pitch.
以上の芯金投影面を連続して斜めに横断するように形成
したことを特徴とする請求項１乃至３記載のゴム履帯。4. The rubber crawler belt according to claim 1, wherein the branch portion of the lug is formed so as to continuously and obliquely cross three or more adjacent core metal projection surfaces.
以上の芯金投影面を連続して斜めに横断するように、且
つ、接地面で中央部から幅方向端部に向かって斜め方向
へ遠ざかるように形成したことを特徴とする請求項１乃
至４記載のゴム履帯。5. The branch portion of the lug diagonally crosses three or more adjacent metal bar projection planes continuously and diagonally, and diagonally from the center to the end in the width direction at the ground contact surface. 5. The rubber crawler belt according to claim 1, wherein the rubber crawler belt is formed so as to move away from the rubber crawler.
帯の中央部から左右端部に向かって遠ざかるに従って次
第に短くなるように形成したことを特徴とする請求項１
乃至５記載のゴム履帯。6. The strip-shaped length of the branch portion of the lug is formed so as to become gradually shorter as it goes away from the center portion of the crawler belt toward the left and right end portions.
The rubber crawler track according to 5 above.
の間に形成される斜面のうち帯状方向前後の一方を緩傾
斜とし、他方は急傾斜としたことを特徴とする請求項１
乃至６記載のゴム履帯。7. The branch portion of the lug is characterized in that one of the slopes formed between the top surface and the base of the lug has a gentle slope on one of the front and rear sides in the strip-like direction and the other has a steep slope. 1
The rubber crawler belt according to any one of 6 to 6.
形成される斜面のうち緩傾斜とした斜面は、履帯の中央
部から左右端部に向かって遠ざかるに従って次第に緩い
傾斜となるように形成したことを特徴とする請求項７記
載のゴム履帯。8. The gentle slope of the slopes formed between the top surface and the base of the branched portion of the lug becomes gradually gentle as it goes away from the center of the crawler belt toward the left and right ends. The rubber crawler track according to claim 7, wherein the rubber crawler track is formed as described above.
分岐部分が共に２箇所以上で横断するように形成したこ
とを特徴とする請求項１乃至３記載のゴム履帯。9. The rubber crawler belt according to claim 1, wherein the lug is formed such that the left and right branch portions both traverse the portion between the adjacent cores at two or more locations.
る凹部は、履帯幅方向の中央部よりも端部の方を広く
し、断面を底部にアールを付けた三角形状または台形形
状としたことを特徴とする請求項７乃至８記載のゴム履
帯。10. A recess formed between the lug and an adjacent lug has a triangular shape or a trapezoidal shape in which the end is wider than the center in the crawler belt width direction and the cross section is rounded at the bottom. 9. The rubber crawler belt according to claim 7, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1176300A JPH0829725B2 (en) | 1989-07-07 | 1989-07-07 | Rubber track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1176300A JPH0829725B2 (en) | 1989-07-07 | 1989-07-07 | Rubber track |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0342383A JPH0342383A (en) | 1991-02-22 |
| JPH0829725B2 true JPH0829725B2 (en) | 1996-03-27 |
Family
ID=16011179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1176300A Expired - Fee Related JPH0829725B2 (en) | 1989-07-07 | 1989-07-07 | Rubber track |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0829725B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343708A (en) * | 2010-07-30 | 2012-02-08 | 郑乐回 | Sponge printing process |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101878583B1 (en) * | 2014-05-13 | 2018-07-13 | 얀마 가부시키가이샤 | Elastic crawler and crawler travelling device equipped with same |
| JP2015214305A (en) * | 2014-05-13 | 2015-12-03 | ヤンマー株式会社 | Elastic crawler and crawler travel device comprising the same |
| JP7183644B2 (en) * | 2018-09-11 | 2022-12-06 | 住友ゴム工業株式会社 | elastic crawler |
-
1989
- 1989-07-07 JP JP1176300A patent/JPH0829725B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343708A (en) * | 2010-07-30 | 2012-02-08 | 郑乐回 | Sponge printing process |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0342383A (en) | 1991-02-22 |
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