JP2007216837A - Rubber crawler - Google Patents

Rubber crawler Download PDF

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Publication number
JP2007216837A
JP2007216837A JP2006039826A JP2006039826A JP2007216837A JP 2007216837 A JP2007216837 A JP 2007216837A JP 2006039826 A JP2006039826 A JP 2006039826A JP 2006039826 A JP2006039826 A JP 2006039826A JP 2007216837 A JP2007216837 A JP 2007216837A
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rubber
protrusion
crawler
central
peripheral surface
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JP2006039826A
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Japanese (ja)
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Eiji Tsuru
栄治 鶴
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Bridgestone Corp
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Bridgestone Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure that all three rubber projections formed on an inner peripheral surface of a rubber crawler are used for transmission of drive force in the rubber crawler improving engagement with a sprocket, bringing close to one another the pressure applied to the respective rubber projections as much as possible, lowering the pressure and not generating break of a tooth and damage to the rubber projection. <P>SOLUTION: In the core metal-less rubber crawler, a steel cord 3 is buried in a longitudinal direction of the rubber crawler and a rubber lug 2 is formed on its outer peripheral surface. A central rubber projection 12 and side part rubber projections 13, 14 are formed on the inner peripheral surface at a center and left and right sides with a constant intervals. These three rubber projection are formed in a longitudinal direction in series and are formed in a width direction in a linear line shape. All rubber projections are engaged with a sprocket 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は芯金レスゴムクロ−ラの駆動方式に関するものである。   The present invention relates to a driving system for a coreless rubber crawler.

芯金レスゴムクロ−ラは内周面に一定のピッチをもって中央ゴム突起が形成され、かかる中央ゴム突起が機体側に設置されたスプロケットと噛み合って駆動力を伝達する駆動方式が広く採用されていた。中央ゴム突起側から言えば、駆動力を伝達する機能と転輪が外れないいわゆる外れ防止機能とを併せもつものであった。   In the coreless rubber crawler, a central rubber protrusion is formed on the inner peripheral surface with a constant pitch, and a driving system in which the central rubber protrusion meshes with a sprocket installed on the machine body side to transmit a driving force has been widely adopted. Speaking from the center rubber projection side, it had both a function of transmitting driving force and a so-called detachment preventing function that prevents the wheels from coming off.

かかる中央ゴム突起の機能を分離し、夫々の機能に合ったゴム突起を別々に備える提案がある(特許文献1)。この提案によれば、ゴムクロ−ラの長手方向に向けて内周面の中央に外れ防止用の中央ゴム突起を形成し、かつ、この左右の幅方向に一対の駆動用の側部ゴム突起を形成したもので、ゴム突起の機能分離により夫々のゴム突起を、要求される機能に従ってその背丈や幅等を異ならせたものである。   There is a proposal for separating the functions of the central rubber protrusion and separately providing rubber protrusions suitable for each function (Patent Document 1). According to this proposal, a central rubber protrusion for preventing disengagement is formed at the center of the inner peripheral surface in the longitudinal direction of the rubber track, and a pair of driving side rubber protrusions are formed in the left and right width directions. The rubber protrusions are formed by differentiating the height and width of each rubber protrusion according to the required function by separating the functions of the rubber protrusions.

特開平6−32262号公報JP-A-6-32262

しかるに、ゴムクロ−ラの旋回時にあっては、機体に装着された一方側のゴムクロ−ラにブレ−キを掛け、他方側を前進又は後退の駆動力を与えることとなる。このため、駆動力を与えられた側のゴムクロ−ラにあっては、駆動用の側部ゴム突起がゴムクロ−ラの幅方向に広がって形成されていることから、スプロケットとの噛み合いが同じとはならず、常に噛み合い力(ゴム突起が受ける圧力)が異なるため、ここに歯飛びが起こったり、ゴム突起の欠損が生じたりしてしまう。   However, when the rubber crawler is turning, a brake is applied to the rubber crawler on one side mounted on the airframe, and a driving force for moving forward or backward is applied to the other side. For this reason, in the rubber crawler on the side to which the driving force is applied, the side rubber projections for driving are formed so as to extend in the width direction of the rubber crawler, so that the meshing with the sprocket is the same. Since the engagement force (pressure received by the rubber protrusion) is always different, tooth skipping occurs or the rubber protrusion is lost.

本発明は以上のような従来の技術に鑑みてなされたものであり、スプロケットとの噛み合いを改善し、各ゴム突起に加わる受圧をできるだけ近づけ、かつその圧力を低くし、歯飛びやゴム突起の欠損が生じないようにしたものである。   The present invention has been made in view of the prior art as described above, improves the meshing with the sprocket, brings the pressure applied to each rubber projection as close as possible, and lowers the pressure so that tooth skipping and rubber projection This is designed to prevent defects.

本発明の要旨(請求項1)は、ゴムクロ−ラの長手方向にスチ−ルコ−ドを埋設し、その外周面にゴムラグを形成してなる芯金レスゴムクロ−ラにおいて、内周面に中央とその左右に一定間隔をもって中央ゴム突起及び側部ゴム突起を形成し、長手方向にこれら3つのゴム突起が直列状に形成され、かつ、幅方向に一直線状に形成されており、スプロケットとは全てのゴム突起が噛み合うことを特徴とする芯金レスゴムクロ−ラである。   The gist of the present invention (Claim 1) is a core metal-less rubber crawler in which a steel cord is embedded in the longitudinal direction of a rubber crawler and a rubber lug is formed on the outer peripheral surface thereof. Central rubber projections and side rubber projections are formed at regular intervals on the left and right, these three rubber projections are formed in series in the longitudinal direction, and are formed in a straight line in the width direction. This is a coreless rubber crawler characterized by the fact that the rubber protrusions are engaged with each other.

請求項2以下にあっては、上記請求項1に記載のゴムクロ−ラを特定し、好ましい効果をもたらそうとするにあり、請求項2にあっては、中央ゴム突起と側部ゴム突起との間を転輪が転動する上記ゴムクロ−ラを提供するものである。   In the second and subsequent aspects, the rubber crawler according to the first aspect is specified to provide a preferable effect. In the second aspect, the central rubber protrusion and the side rubber protrusion are provided. The above-mentioned rubber crawler in which a wheel rolls between the two is provided.

請求項3にあっては、中央ゴム突起と側部ゴム突起の長手方向の基部幅をほぼ同一とした上記ゴムクロ−ラを提供するものである。   According to a third aspect of the present invention, there is provided the rubber crawler in which the center width of the central rubber projection and the side rubber projection are substantially the same in the longitudinal base width.

請求項4にあっては、中央ゴム突起と側部ゴム突起の背丈をほぼ同一とした上記ゴムクロ−ラを提供するものである。   According to a fourth aspect of the present invention, there is provided the rubber crawler in which the central rubber protrusion and the side rubber protrusion have substantially the same height.

請求項5にあっては、中央ゴム突起と側部ゴム突起の側面視での形状をほぼ同一とした上記ゴムクロ−ラを提供するものである。   According to a fifth aspect of the present invention, there is provided the rubber crawler in which the central rubber projection and the side rubber projection have substantially the same shape in a side view.

本発明は以上の通りであり、ゴムクロ−ラの内周面に形成される3つのゴム突起を全て駆動力の伝達に供する構造としたものであり、これによって例えば旋回時であってもスプロケットとの噛み合わせがスム−ズに行われ、ゴム突起の受圧が小さくなり、歯飛びやゴム欠けの発生を低減できたものである。   The present invention is as described above, and has a structure in which all three rubber protrusions formed on the inner peripheral surface of the rubber crawler are used for transmission of driving force. Is smoothly performed, the pressure received by the rubber protrusion is reduced, and the occurrence of tooth skipping and rubber chipping can be reduced.

請求項2以下にあっては、かかる効果を更に高めるためにゴム突起の形状や夫々の関係を特定したものであり、いずれもスプロケットとの噛み合いがスム−ズとなる特徴を更にもたらすものである。   In the second and subsequent aspects, the shape of the rubber protrusion and the relationship between them are specified in order to further enhance the effect, and each of them further brings about the feature that the meshing with the sprocket becomes smooth. .

特許文献1には前記したようにゴム突起の機能を分離して構成したものであるが、本発明はこの提案された各ゴム突起の機能を再評価し、最も好ましい形態として提案したものである。即ち、ゴムクロ−ラの内周面に形成した各ゴム突起を夫々駆動力の伝達にふさわしい構成に特定したものであり、この結果、各ゴム突起の受圧が低下し、かつ、スプロケットの歯飛びが少なくなり、更に、各ゴム突起の欠けの発生が低減したものである。   In Patent Document 1, as described above, the functions of the rubber protrusions are separated and configured. However, the present invention re-evaluates the functions of the proposed rubber protrusions and proposes them as the most preferable mode. . That is, each rubber protrusion formed on the inner peripheral surface of the rubber tracker is specified to have a configuration suitable for transmission of the driving force. As a result, the pressure received by each rubber protrusion is reduced, and the sprocket teeth skip. Further, the occurrence of chipping of each rubber protrusion is reduced.

各ゴム突起について好ましい形態を述べれば、いずれのゴム突起の長手方向の基部幅をほぼ同一(請求項3)とするのがよく、又、中央ゴム突起と側部ゴム突起の背丈をほぼ同一(請求項4)とし、更に、中央ゴム突起と側部ゴム突起の側面視での形状をほぼ同一(請求項5)としたもので、これによって噛み合わせの相手であるスプロケット側も全ての条件を同一とすることが可能となったものである。   If a preferable form is described for each rubber protrusion, the base width in the longitudinal direction of any rubber protrusion should be substantially the same (Claim 3), and the center rubber protrusion and the side rubber protrusion have substantially the same height ( Further, the shape of the central rubber projection and the side rubber projection in the side view is substantially the same (Claim 5), so that the sprocket side, which is the mating counterpart, also meets all the conditions. It is possible to make them identical.

尚、中央のゴム突起と側部のゴム突起との間を転輪が転動するものであり、これによって転輪の外れ防止に供されるものであるが、後述するように側部のゴム突起をもって外れ防止機能をもたらすことができることは言うまでもない。   Incidentally, the wheel rolls between the center rubber protrusion and the side rubber protrusion, and this serves to prevent the wheel from coming off. Needless to say, the protrusion can provide a function of preventing detachment.

以下、実施例をもって本発明を更に説明する。図1は本発明のゴムクロ−ラの第1実施例を示す内周側平面図、図2はその側面図、図3はA−A線断面図である。図中、符号1はゴムクロ−ラを構成するゴム弾性体、2は外周面側のラグ、3は長手方向に埋設されたスチ−ルコ−ドである。   The present invention will be further described below with reference to examples. FIG. 1 is a plan view of an inner peripheral side showing a first embodiment of the rubber track of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a cross-sectional view taken along line AA. In the figure, reference numeral 1 is a rubber elastic body constituting a rubber crawler, 2 is a lug on the outer peripheral surface side, and 3 is a steel cord embedded in the longitudinal direction.

さて、ゴムクロ−ラの内周面の中央に中央ゴム突起12が形成され、その左右に一定の幅を開けて側部ゴム突起13、14が形成されている。これらゴム突起12、13、14は長手方向の基部の幅をほぼ等しくしたものであり、中央ゴム突起12の幅方向の長さは、他のゴム突起13、14の長さのほぼ2倍となっている。そして、側面視で言えば、これらゴム突起12、13、14は全てほぼ同じ形状をなしている。   A central rubber protrusion 12 is formed at the center of the inner peripheral surface of the rubber track, and side rubber protrusions 13 and 14 are formed with a certain width on the left and right. These rubber protrusions 12, 13, and 14 have substantially the same width in the base portion in the longitudinal direction, and the length in the width direction of the central rubber protrusion 12 is almost twice the length of the other rubber protrusions 13 and 14. It has become. When viewed from the side, these rubber protrusions 12, 13, and 14 all have substantially the same shape.

このため、スプロケットにおける噛み合わせ部位はいずれもほぼ同じ構成でよいことになる。図にあって、21はスプロケットであり、周縁にフランジ22を備えた一対の円盤23よりなり、この円盤を貫いてピン24が立設されており、このピン24が各ゴム突起12、13、14に噛み合うこととなる。このため、各ゴム突起12、13、14の側面視での形状がほぼ同一であるのが好ましいこととなる。尚、図示はしないが、スプロケットはギヤタイプのものであってもよいことは勿論である。   For this reason, all the meshing parts in the sprocket may have substantially the same configuration. In the figure, reference numeral 21 denotes a sprocket, which is composed of a pair of disks 23 each having a flange 22 at the periphery, and a pin 24 is erected through the disk, and the pin 24 is connected to each rubber protrusion 12, 13, 14 will be engaged. For this reason, it is preferable that the shape of each rubber protrusion 12, 13, and 14 in the side view is substantially the same. Of course, although not shown, the sprocket may be of a gear type.

尚、中央ゴム突起12の幅方向の長さが他のゴム突起13、14の長さよりも大きくしてあるが、これはスプロケット21のフランジ22にて歪みが加わったり、図示しない転輪によってこれ又歪みが加わったりするための対抗措置である。   The length of the central rubber protrusion 12 in the width direction is larger than the lengths of the other rubber protrusions 13 and 14, but this may be distorted by the flange 22 of the sprocket 21 or may be caused by a wheel (not shown). It is a countermeasure for adding distortion.

図4は本発明のゴムクロ−ラの第2実施例であり、この例では先ず中央ゴム突起12の背丈を他のゴム突起13、14よりもやや高くした例である。これは外れ防止機能を更に増すための措置である。   FIG. 4 shows a second embodiment of the rubber track of the present invention. In this example, the height of the central rubber projection 12 is first made slightly higher than the other rubber projections 13 and 14. This is a measure for further increasing the detachment prevention function.

又、31は転輪を示す。前記の図において、転輪は図示しなかったが、通常の転輪31は中央ゴム突起12を跨ぐ構造となっており、中央ゴム突起12と左右の側部ゴム突起13、14との間のゴムクロ−ラ内周面15、16にその周縁32、33が接触して走行することとなるところ、この図例の転輪31は側部のゴム突起12、13を挟む側方円盤34、35を備えたものであり、この円盤34、35はゴムクロ−ラの内周面17、18に接触し、しかも側部ゴム突起13、14を挟みつつ走行する構造となっている。従って、全てのゴム突起が外れ防止の機能をなすように転輪そのものを改良したものである。   Reference numeral 31 denotes a wheel. In the figure, the wheel is not shown, but the normal wheel 31 has a structure straddling the central rubber protrusion 12, and between the central rubber protrusion 12 and the left and right side rubber protrusions 13, 14. When the peripheral edges 32 and 33 are in contact with the inner peripheral surfaces 15 and 16 of the rubber crawler, the wheels 31 in this example are side disks 34 and 35 sandwiching the rubber protrusions 12 and 13 on the side portions. The disks 34 and 35 are in contact with the inner peripheral surfaces 17 and 18 of the rubber crawler and are configured to travel while sandwiching the side rubber protrusions 13 and 14. Therefore, the rolling wheels themselves are improved so that all the rubber protrusions have a function of preventing detachment.

本発明は以上の通りであり、芯金レスゴムクロ−ラの内周面にゴム突起を3条形成し、これらの形状と位置とを特定しいずれのゴム突起をも駆動力の伝達に供する構造としたものであり、ゴム突起における受圧が小さくなり、ゴム突起への歪みを小さくし、かつ、ゴム突起の欠けが減る等の大きな特徴を備えたものであり、芯金レスゴムクロ−ラに広く採用可能である。   The present invention is as described above. Three rubber protrusions are formed on the inner peripheral surface of the coreless rubber crawler, the shape and position thereof are specified, and any of the rubber protrusions is used to transmit the driving force. It has a large feature such that the pressure received by the rubber protrusion is reduced, the distortion to the rubber protrusion is reduced, and the chipping of the rubber protrusion is reduced, and it can be widely applied to the coreless rubber crawler. It is.

図1は本発明のゴムクロ−ラの第1実施例を示す内周側平面図である。FIG. 1 is a plan view of an inner peripheral side showing a first embodiment of the rubber track of the present invention. 図2は図1の側面図である。FIG. 2 is a side view of FIG. 図3は図1のA−A線での断面図である。3 is a cross-sectional view taken along line AA in FIG. 図4は本発明のゴムクロ−ラの第2実施例を示す図3と同様の図である。FIG. 4 is a view similar to FIG. 3 showing a second embodiment of the rubber track of the present invention.

符号の説明Explanation of symbols

1‥ゴム弾性体、
2‥ラグ、
3‥スチ−ルコ−ド、
12‥中央ゴム突起、
13、14‥側部ゴム突起、
21‥スプロケット、
22‥フランジ、
23‥円盤、
24‥ピン、
31‥転輪。
1. Rubber elastic body,
2 lag,
3. Steel code,
12. Center rubber protrusion,
13, 14 ... Side rubber protrusions,
21 ... Sprocket,
22 ... Flange,
23. Disc,
24 ... pin,
31 ... Wheel.

Claims (5)

ゴムクロ−ラの長手方向にスチ−ルコ−ドを埋設し、その外周面にゴムラグを形成してなる芯金レスゴムクロ−ラにおいて、内周面に中央とその左右に一定間隔をもって中央ゴム突起及び側部ゴム突起を形成し、長手方向にこれら3つのゴム突起が直列状に形成され、かつ、幅方向に一直線状に形成されており、スプロケットとは全てのゴム突起が噛み合うことを特徴とする芯金レスゴムクロ−ラ。   In a metal core-less rubber crawler in which a steel cord is embedded in the longitudinal direction of the rubber crawler and a rubber lug is formed on the outer peripheral surface thereof, the central rubber protrusion and the side are spaced apart from the center on the inner peripheral surface and at regular intervals on the left and right. The core is characterized in that a rubber protrusion is formed, these three rubber protrusions are formed in series in the longitudinal direction and are formed in a straight line in the width direction, and all the rubber protrusions mesh with the sprocket. Gold-less rubber crawler. 中央ゴム突起と側部ゴム突起との間を転輪が転動する請求項1記載のゴムクロ−ラ。   2. A rubber crawler according to claim 1, wherein the roller rolls between the central rubber protrusion and the side rubber protrusion. 中央ゴム突起と側部ゴム突起の長手方向の基部幅をほぼ同一とした請求項1又は2記載のゴムクロ−ラ。   The rubber crawler according to claim 1 or 2, wherein the base width in the longitudinal direction of the central rubber protrusion and the side rubber protrusion is substantially the same. 中央ゴム突起と側部ゴム突起の背丈をほぼ同一とした請求項1乃至3いずれか1記載のゴムクロ−ラ。   4. A rubber crawler according to claim 1, wherein the central rubber protrusion and the side rubber protrusion have substantially the same height. 中央ゴム突起と側部ゴム突起の側面視での形状をほぼ同一とした請求項1乃至4いずれか1記載のゴムクロ−ラ。   The rubber crawler according to any one of claims 1 to 4, wherein the central rubber protrusion and the side rubber protrusion have substantially the same shape in a side view.
JP2006039826A 2006-02-16 2006-02-16 Rubber crawler Pending JP2007216837A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015146753A1 (en) * 2014-03-24 2015-10-01 三菱重工業株式会社 Running device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015146753A1 (en) * 2014-03-24 2015-10-01 三菱重工業株式会社 Running device
JP2015182547A (en) * 2014-03-24 2015-10-22 三菱重工業株式会社 traveling device
US10668964B2 (en) 2014-03-24 2020-06-02 Mitsubishi Heavy Industries, Ltd Running device

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