JP3745007B2 - Protrusion-driven rubber crawler device - Google Patents

Protrusion-driven rubber crawler device Download PDF

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Publication number
JP3745007B2
JP3745007B2 JP04041296A JP4041296A JP3745007B2 JP 3745007 B2 JP3745007 B2 JP 3745007B2 JP 04041296 A JP04041296 A JP 04041296A JP 4041296 A JP4041296 A JP 4041296A JP 3745007 B2 JP3745007 B2 JP 3745007B2
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JP
Japan
Prior art keywords
protrusion
rubber crawler
base
rubber
elastic body
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
Application number
JP04041296A
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Japanese (ja)
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JPH09207840A (en
Inventor
利通 仲田
賢 石橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
ATECS CORP
Original Assignee
Bridgestone Corp
ATECS CORP
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp, ATECS CORP filed Critical Bridgestone Corp
Priority to JP04041296A priority Critical patent/JP3745007B2/en
Publication of JPH09207840A publication Critical patent/JPH09207840A/en
Application granted granted Critical
Publication of JP3745007B2 publication Critical patent/JP3745007B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
本発明は突起駆動型ゴムクロ−ラ装置に関するものであり、更に詳しくは、脱輪防止機能を付加した突起駆動型ゴムクロ−ラ装置に係るものである。
【0002】
【従来の技術】
従来より、ゴムクロ−ラの内周面に一定ピッチをもってスプロケットと係合する突起を形成し、この突起を順次スプロケットと係合してなる突起駆動型ゴムクロ−ラは存在する。図10はこのゴムクロ−ラの側面図であり、図11はその幅方向の断面図である。図中、符号11はゴムクロ−ラ、12はこのゴムクロ−ラの基体となる無端状ゴム弾性体、13はその長手方向に埋設された抗張体としてのスチ−ルコ−ド、14は無端状ゴム弾性体1の内周面の中央に一定ピッチをもって形成したスプロケットと係合する突起、15はこの外周面に形成したゴムラグである。
【0003】
しかるに、このゴムクロ−ラ11の走行中に外力が加わった場合、ゴムクロ−ラ11に逆曲げ、横ずれ、捩れ等が発生し、機体に備え付けられた転輪やスプロケット(図示せず)と突起14との係合関係が脱れ、転輪等がこの突起14上に乗り上げてしまい、その結果脱輪の発生を見ることがしばしばであった。
【0004】
【発明が解決しようとする課題】
本発明は、転輪等とゴムクロ−ラとの間の脱転の発生を防止することを目的とするものであり、特に突起と突起との間にあっても転輪等の横ずれを防止し、しかもゴムクロ−ラがスプロケットやアイドラ−に巻き掛けする際の屈曲抵抗を低減したゴムクロ−ラ装置を提供するものである。
【0005】
【課題を解決するための手段】
本発明は以上のような目的を達成するためになされたものであって、その発明の要旨は、無端状ゴム弾性体と、その内周面に無端状ゴム弾性体の長手方向に連続する同一幅の台部と、この台部上に一定ピッチをもって設けた突起と、この突起に係合して駆動力を伝達するスプロケットと、この突起及び台部を跨ぎかつ台部の側面に接しつつ両端が無端状ゴム弾性体の内周面に接する転輪と、この突起間における台部に無端状ゴム弾性体の幅方向に向って形成した溝部と、からなることを特徴とする突起駆動型ゴムクロ−ラ装置に係るものである。
【0006】
【発明の実施の形態】
本発明は上記の構造にあって、転輪は突起を跨いで台部とも係合することとなる。特に台部側面との係合は連続するものであって、これにより転輪の横ずれを阻止し、脱輪の発生を極めて低減することができることとなった。尚、スプロケットは突起と係合して駆動力を伝達すると共に台部の左右のゴムクロ−ラの内周面に接して回転することとなっており、この点で脱輪防止機能をもたらすと共に、スプロケットとゴムクロ−ラ内周面との間の摩擦駆動型ゴムクロ−ラ装置であるとも言える。
【0007】
本発明において、ゴムクロ−ラの内周面に連続する台部の存在は巻き掛けの際の屈曲抵抗を増加することとなるが、この対策として突起と突起の間における台部にゴムクロ−ラの幅方向に向けて溝部を形成し、台部を形成するゴムの圧縮歪をこの溝部によって逃がすことによって屈曲抵抗を低減するものである。この溝部は好ましくは突起の基底部に備えられるのがよい。
【0008】
更に、スチ−ルコ−ドにて代表される抗張体は台部の幅よりも幅の広い範囲に埋設されているものであり、ゴム弾性体中の幅の広い範囲内で埋設されることによってゴムクロ−ラの捩れに対して剛性アップをもたらすことになり、捩じれによる脱輪の発生を規制することができることとなる。
【0009】
【実施例】
以下、本発明におけるゴムクロ−ラを図面をもって更に詳細に説明する。
図1は本発明のゴムクロ−ラの内周側平面図、図2は外周側平面図、図3はその側面図である。そして図4は図1のA−A線での断面図であり、図5はB−B線での断面図である。図中、符号1はゴムクロ−ラ、2はゴムクロ−ラの基体となるゴム弾性体、3はその内周面の中央で長手方向に連続的に形成された台部であり、4はその台部3上に一定ピッチをもって形成された突起である。又、5はゴム弾性体の外周面に幅方向にZ字状に形成したゴムラグである。
【0010】
図例にあっては台部3上の突起4の基底部に溝部6を形成したものである。そして7はスプロケットを示すものであり、突起4と係合してゴムクロ−ラ1に駆動力を伝達すると共に、そのスプロケット7の両端70 が台部3を跨いでゴム弾性体2の内周面に接触するものである。図示しない転輪も同様であり、台部3を跨ぎ、転輪の両端が台部3の側面3aに接触することとなる。そして抗張体としてのスチ−ルコ−ド8は、ゴム弾性体2の長手方向に沿って埋設され、その埋設の幅W0 は台部3の幅W1 より大きくするものであり、この幅W0 を大きくすれば、それだけゴムクロ−ラ1の捩れ等を阻止する力となる。
【0011】
転輪、アイドラ、スプロケットとゴムクロ−ラ1との脱輪の発生にあって、本発明においては、従来の構造によるゴムクロ−ラの突起との係合だけでなく、連続する台部3の側面との係合も行われるため、特に突起4のない部位でも脱輪防止機能をもたらすものである。
【0012】
そしてこの台部3の存在はゴムクロ−ラ1がアイドラ−やスプロケットに巻き掛けされる際に生じる屈曲抵抗を大きくするが、この対策として台部3に溝部6を形成することによって屈曲抵抗を低減させたものである。即ち、溝部6は台部3の圧縮歪の吸収緩和に役立つこととなる。
【0013】
図6〜図9は本発明のゴムクロ−ラ1の溝部5の配置例を示すものであり、図6は突起4の左右の基底部に溝部6、6及び突起4、4間に溝部60 を形成したものである。この図例における溝部6、60 はいずれも略同一断面形状をもつものである。
【0014】
図7にあっては、突起4の左右の基底部における溝部6、6は突起4、4間における溝部60 の断面形状より小さくしたものであり、図8はこの逆の形状をもつ溝部6、6、60 の例である。図9は突起4、4間にのみ溝部60 を形成した例である。このように、本発明において台部3に形成する溝部の形状は、ゴムクロ−ラの大きさや巻き掛け半径、更には突起の間隔やゴムクロ−ラの使用状況によって任意に選択されるものである。これら溝部6、60 はいずれも台部3にのみ形成されたもので、ゴム弾性体2の内周面に達しないのが好ましい。
【0015】
【発明の効果】
本発明は、ゴムクロ−ラの長手方向に連続する台部の側面との接触により転輪の乗り上げを防止し、更に、抗張体を幅広にゴムクロ−ラ中に埋設することによりゴムクロ−ラの剛性を確保したもので、これらによって耐脱輪性を高めたものである。
そして、連続した台部を含め抗張体よりも内周側はゴムクロ−ラの巻き掛け時には大きな屈曲抵抗となるため、台部に一定間隔毎に溝部を設け屈曲抵抗を緩和したものである。
【0016】
以上のように、ゴムクロ−ラ自体の剛性を確保しつつ、内周側の連続する台部により転輪の乗り上げを防止し、更に屈曲抵抗を高めることなく耐脱輪性の優れた芯金レスゴムクロ−ラを得ることができた。
【図面の簡単な説明】
【図1】 図1は本発明のゴムクロ−ラの内周側平面図である。
【図2】 図2は図1に示すゴムクロ−ラの外周側平面図である。
【図3】 図3は図1に示すゴムクロ−ラの側面図である。
【図4】 図4は図1のA−A線での断面図である。
【図5】 図5は図1のB−B線での断面図である。
【図6】 図6はゴムクロ−ラの第2例における溝部の配置を示す側面図である。
【図7】 図7はゴムクロ−ラの第3例における溝部の配置を示す側面図である。
【図8】 図8はゴムクロ−ラの第4例における溝部の配置を示す側面図である。
【図9】 図9はゴムクロ−ラの第5例における溝部の配置を示す側面図である。
【図10】 図10は従来のゴムクロ−ラの側面図である。
【図11】 図11は図10のゴムクロ−ラの幅方向の断面図である。
【符号の説明】
1‥‥ゴムクロ−ラ、
2‥‥ゴムクロ−ラの基体となるゴム弾性体、
3‥‥内周面の中央で長手方向に連続的に形成された台部、
3a‥‥台部の側面、
4‥‥台部上に一定ピッチをもって形成された突起、
5‥‥ゴム弾性体の外周面に形成したゴムラグ、
6、60 ‥‥台部に形成した溝部、
7‥‥スプロケット、
8‥‥抗張体(スチ−ルコ−ド)、
W0 ‥‥抗張体(スチ−ルコ−ド)の埋設の幅、
W1 ‥‥台部の幅。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a protrusion drive type rubber crawler device, and more particularly to a protrusion drive type rubber crawler device to which a derailment prevention function is added.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is a protrusion-driven rubber crawler in which protrusions that engage with a sprocket are formed at a constant pitch on the inner peripheral surface of a rubber crawler, and the protrusions are sequentially engaged with the sprocket. FIG. 10 is a side view of the rubber track, and FIG. 11 is a cross-sectional view in the width direction. In the figure, reference numeral 11 is a rubber crawler, 12 is an endless rubber elastic body serving as a base of the rubber crawler, 13 is a steel cord as a tensile body embedded in the longitudinal direction, and 14 is an endless shape. A protrusion 15 for engaging with a sprocket formed at a constant pitch at the center of the inner peripheral surface of the rubber elastic body 1 is a rubber lug formed on the outer peripheral surface.
[0003]
However, when an external force is applied while the rubber crawler 11 is running, the rubber crawler 11 is reversely bent, laterally displaced, twisted, and the like. In many cases, the engagement relationship with the wheel is disengaged, and the wheel or the like rides on the projection 14, and as a result, occurrence of the wheel removal is observed.
[0004]
[Problems to be solved by the invention]
The object of the present invention is to prevent the occurrence of slipping between a wheel and a rubber crawler. It is an object of the present invention to provide a rubber crawler device with reduced bending resistance when the rubber crawler is wound around a sprocket or idler.
[0005]
[Means for Solving the Problems]
The present invention has been made to achieve the above object, and the gist of the invention is the same as the endless rubber elastic body and the inner peripheral surface thereof which is continuous in the longitudinal direction of the endless rubber elastic body. A base having a width, a protrusion provided on the base with a constant pitch, a sprocket that engages with the protrusion and transmits a driving force, and straddles the protrusion and the base and contacts both sides of the base. A protrusion-driven rubber cloth characterized by comprising: a wheel that contacts the inner peripheral surface of the endless rubber elastic body; and a groove formed in the base between the protrusions in the width direction of the endless rubber elastic body. -Concerning the device.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The present invention has the above-described structure, and the wheel is engaged with the base portion across the protrusion. In particular, the engagement with the side surface of the pedestal portion is continuous, thereby preventing the lateral displacement of the rolling wheels and extremely reducing the occurrence of wheel removal. The sprocket engages with the projection to transmit the driving force and rotates in contact with the inner peripheral surfaces of the left and right rubber crawlers of the base part. It can also be said that this is a friction drive type rubber crawler device between the sprocket and the inner surface of the rubber crawler.
[0007]
In the present invention, the presence of the base part continuous with the inner peripheral surface of the rubber crawler increases the bending resistance at the time of winding. As a countermeasure, the base part between the protrusions has a rubber crawler on the base part. The groove portion is formed in the width direction, and the bending resistance is reduced by releasing the compression strain of the rubber forming the base portion through the groove portion. This groove is preferably provided at the base of the protrusion.
[0008]
Furthermore, the tensile body represented by the steel cord is embedded in a range wider than the width of the base, and is embedded in a wide range in the rubber elastic body. As a result, the rigidity of the rubber crawler is increased, and the occurrence of wheel disengagement due to the twist can be restricted.
[0009]
【Example】
Hereinafter, the rubber crawler according to the present invention will be described in more detail with reference to the drawings.
FIG. 1 is a plan view of an inner peripheral side of a rubber track according to the present invention, FIG. 2 is a plan view of an outer peripheral side, and FIG. 3 is a side view thereof. 4 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 5 is a cross-sectional view taken along line BB. In the figure, reference numeral 1 is a rubber crawler, 2 is a rubber elastic body as a base of the rubber crawler, 3 is a base portion formed continuously in the longitudinal direction at the center of its inner peripheral surface, and 4 is its base. The protrusions are formed on the portion 3 with a constant pitch. Reference numeral 5 denotes a rubber lug formed in a Z shape in the width direction on the outer peripheral surface of the rubber elastic body.
[0010]
In the illustrated example, a groove 6 is formed at the base of the protrusion 4 on the base 3. Reference numeral 7 denotes a sprocket, which engages with the protrusion 4 to transmit a driving force to the rubber crawler 1, and both ends 70 of the sprocket 7 straddle the base portion 3 and the inner peripheral surface of the rubber elastic body 2. Is in contact with The same applies to the wheel (not shown). The wheel 3 straddles the base 3 and both ends of the wheel contact the side surface 3 a of the base 3. The steel cord 8 as a tensile body is embedded along the longitudinal direction of the rubber elastic body 2, and the embedded width W0 is larger than the width W1 of the base 3, and the width W0 is If it is increased, it will be a force to prevent the rubber crawler 1 from being twisted.
[0011]
In the occurrence of wheel disengagement of the roller, idler, sprocket and rubber crawler 1, in the present invention, not only the engagement with the protrusion of the rubber crawler according to the conventional structure but also the side surface of the continuous base 3 Since the engagement is also performed, a function of preventing the wheel from being removed is provided even at a portion where the protrusion 4 is not provided.
[0012]
The presence of the pedestal 3 increases the bending resistance generated when the rubber crawler 1 is wound around an idler or a sprocket. As a countermeasure, the bending resistance is reduced by forming a groove 6 in the pedestal 3. It has been made. That is, the groove 6 serves to absorb the compression strain of the base 3.
[0013]
6 to 9 show examples of the arrangement of the groove portions 5 of the rubber crawler 1 of the present invention. FIG. 6 shows the groove portions 6 and 6 and the groove portions 60 between the protrusions 4 and 4 on the left and right base portions of the protrusion 4. Formed. The grooves 6 and 60 in this example have substantially the same cross-sectional shape.
[0014]
In FIG. 7, the groove portions 6 and 6 in the left and right base portions of the protrusion 4 are smaller than the cross-sectional shape of the groove portion 60 between the protrusions 4 and 4, and FIG. 8 shows the groove portion 6 having the opposite shape. Examples of 6, 60. FIG. 9 shows an example in which the groove 60 is formed only between the protrusions 4 and 4. Thus, in the present invention, the shape of the groove portion formed in the base portion 3 is arbitrarily selected depending on the size of the rubber crawler, the winding radius, the interval between the protrusions, and the usage status of the rubber crawler. These groove portions 6 and 60 are all formed only on the base portion 3 and preferably do not reach the inner peripheral surface of the rubber elastic body 2.
[0015]
【The invention's effect】
The present invention prevents the rolling of the wheels from coming into contact with the side surface of the base portion that is continuous in the longitudinal direction of the rubber crawler, and further embeds the tensile body in the rubber crawler in a wide manner. This is to ensure rigidity and to improve anti-derailing resistance.
Since the inner peripheral side of the tensile body including the continuous base portion has a large bending resistance when the rubber crawler is wound, grooves are provided in the base portion at regular intervals to reduce the bending resistance.
[0016]
As described above, while maintaining the rigidity of the rubber crawler itself, the continuous base part on the inner peripheral side prevents the rolling wheel from climbing, and further improves the anti-wheeling resistance without increasing bending resistance. -I was able to get la.
[Brief description of the drawings]
FIG. 1 is a plan view of an inner peripheral side of a rubber track according to the present invention.
FIG. 2 is a plan view of the outer periphery of the rubber track shown in FIG.
FIG. 3 is a side view of the rubber track shown in FIG.
FIG. 4 is a cross-sectional view taken along line AA in FIG.
5 is a cross-sectional view taken along the line BB in FIG. 1. FIG.
FIG. 6 is a side view showing the arrangement of grooves in a second example of the rubber crawler.
FIG. 7 is a side view showing the arrangement of grooves in a third example of the rubber crawler.
FIG. 8 is a side view showing the arrangement of grooves in a fourth example of the rubber crawler.
FIG. 9 is a side view showing the arrangement of grooves in a fifth example of the rubber crawler.
FIG. 10 is a side view of a conventional rubber crawler.
11 is a cross-sectional view in the width direction of the rubber track of FIG.
[Explanation of symbols]
1 ... Rubber Crawler,
2. Rubber elastic body that is the base of the rubber crawler
3. A pedestal formed continuously in the longitudinal direction at the center of the inner peripheral surface,
3a ... Side of the base,
4. Projections formed with a certain pitch on the base,
5. A rubber lug formed on the outer peripheral surface of the rubber elastic body
6, 60 ... groove formed in the base,
7. Sprocket,
8 ... Tensile body (steel code),
W0 ... the width of the embedding of the tensile body (steel cord),
W1 ... the width of the base.

Claims (1)

無端状ゴム弾性体と、その内周面に無端状ゴム弾性体の長手方向に連続する同一幅の台部と、この台部上に一定ピッチをもって設けた突起と、この突起に係合して駆動力を伝達するスプロケットと、この突起及び台部を跨ぎかつ台部の側面に接しつつ両端が無端状ゴム弾性体の内周面に接する転輪と、この突起間における台部に無端状ゴム弾性体の幅方向に向って形成した溝部と、からなることを特徴とする突起駆動型ゴムクロ−ラ装置。  An endless rubber elastic body, a base portion of the same width continuous in the longitudinal direction of the endless rubber elastic body on the inner peripheral surface thereof, a protrusion provided on the base section with a constant pitch, and an engagement with the protrusion A sprocket that transmits the driving force, a rolling wheel that straddles the protrusion and the base part and is in contact with the side surface of the base part while both ends are in contact with the inner peripheral surface of the endless rubber elastic body, and an endless rubber on the base part between the protrusions A protrusion-driven rubber crawler device comprising: a groove formed in the width direction of the elastic body.
JP04041296A 1996-02-03 1996-02-03 Protrusion-driven rubber crawler device Expired - Fee Related JP3745007B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04041296A JP3745007B2 (en) 1996-02-03 1996-02-03 Protrusion-driven rubber crawler device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04041296A JP3745007B2 (en) 1996-02-03 1996-02-03 Protrusion-driven rubber crawler device

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JPH09207840A JPH09207840A (en) 1997-08-12
JP3745007B2 true JP3745007B2 (en) 2006-02-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008096749A1 (en) 2007-02-05 2008-08-14 Bridgestone Corporation Rubber crawler track

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4776080B2 (en) * 2001-01-19 2011-09-21 住友ゴム工業株式会社 Elastic crawler
JP4157874B2 (en) * 2005-03-14 2008-10-01 住友ゴム工業株式会社 Elastic crawler
JP5230216B2 (en) * 2008-02-05 2013-07-10 株式会社ブリヂストン Rubber crawler
JP5818650B2 (en) * 2011-11-18 2015-11-18 株式会社ブリヂストン Elastic crawler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008096749A1 (en) 2007-02-05 2008-08-14 Bridgestone Corporation Rubber crawler track
US9216784B2 (en) 2007-02-05 2015-12-22 Bridgestone Corporation Rubber crawler track

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