JP2008296742A - Rubber pad for crawler - Google Patents

Rubber pad for crawler Download PDF

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JP2008296742A
JP2008296742A JP2007145301A JP2007145301A JP2008296742A JP 2008296742 A JP2008296742 A JP 2008296742A JP 2007145301 A JP2007145301 A JP 2007145301A JP 2007145301 A JP2007145301 A JP 2007145301A JP 2008296742 A JP2008296742 A JP 2008296742A
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rubber pad
crawler
pad
crawler belt
circumferential direction
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Mitsuhiro Iwasa
光浩 岩佐
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Bridgestone Corp
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Bridgestone Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent a clearance from being generated between respective apex surfaces of projections provided on both end parts in a crawler rubber pad circumferential direction and the rubber pad for the crawler on the surface of a shoe plate tread part. <P>SOLUTION: At an opposite tread side on the end part in the crawler rubber pad circumferential direction S of the rubber pad 10 for the crawler, a pressure-contact part 15 formed by a material having lower rubber hardness than a rubber material forming the pad body 12 and compression-deformable in a thickness direction between the apex surfaces of the projections 23a, 23b and it when the rubber pad 10 for the crawler is mounted to the surface of the shoe plate tread part 22 is provided. The vertical cross section view shape along the crawler rubber pad circumferential direction S in the portion remained by removing the pressure-contact part 15 in the rubber pad 10 for the crawler becomes symmetrical relative to a central line passing through a central part in the crawler rubber pad circumferential direction S. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、油圧ショベル等の建設機械、その他のクローラ式車両に装着されたクローラに取り付けられる履帯用ゴムパッドに関するものである。   The present invention relates to a rubber pad for a crawler track attached to a crawler mounted on a construction machine such as a hydraulic excavator or other crawler type vehicles.

この種のクローラは、一般に多数のシュープレートがリンクやピンを介して無端状に連結されて構成されている。ここで、各シュープレートの踏面部（以下、「シュープレート踏面部」という）の表面において履帯用ゴムパッド周方向の両端部にはそれぞれ、履帯用ゴムパッド幅方向に延びる突部が突設されている。そして、近年では、車両の走行路面を保護したり、騒音や振動を低減させたりする等のために、例えば下記特許文献１に示されるような、芯金と、この芯金の踏面側に接着されたゴム製のパッド本体と、を備える履帯用ゴムパッドが、履帯用ゴムパッド周方向の両端部における反踏面側がそれぞれ前記両突部の各頂面上に位置させられた状態で、シュープレート踏面部に取り付けられることがある。
この種の履帯用ゴムパッドは、多種のシュープレートに取付け可能となるような汎用性を持たせるため、履帯用ゴムパッド周方向に沿った縦断面視形状が、履帯用ゴムパッド周方向の中央部を通る中心線に対して対称となるように構成されている。
特開２００６−１２３６８１号公報 This type of crawler is generally configured by connecting a large number of shoe plates endlessly via links and pins. Here, on the surface of the tread surface portion of each shoe plate (hereinafter referred to as “the shoe plate tread surface portion”), protrusions extending in the width direction of the crawler rubber pad are respectively provided at both ends in the circumferential direction of the crawler rubber pad. . In recent years, in order to protect the traveling road surface of a vehicle, reduce noise and vibration, etc., for example, as shown in Patent Document 1 below, the core metal is bonded to the tread side of the core metal. A rubber pad for a crawler belt, and a shoe plate tread surface portion with the opposite tread surface sides at both ends in the circumferential direction of the crawler rubber pad positioned on the top surfaces of the two protrusions, respectively. It may be attached to.
This type of rubber pad for crawler belts has versatility so that it can be attached to various shoe plates. Therefore, the shape of the longitudinal section along the circumferential direction of the crawler rubber pad passes through the central part in the circumferential direction of the crawler rubber pad. It is configured to be symmetric with respect to the center line.
JP 2006-123681 A

ところが、クローラには、シュープレート踏面部の表面に突設された前記両突部の高さが互いに異なっているタイプのものがあり、このようなシュープレート踏面部に前記従来の履帯用ゴムパッドを取り付けると、高さの低い突部の頂面と履帯用ゴムパッドとの間に隙間が生じていた。この場合、この履帯用ゴムパッドを装着したクローラ式車両の走行中に前記隙間に土砂が入り込み易く、履帯用ゴムパッドがシュープレート踏面部から押し上げられて外れたり、あるいはパッド本体が芯金から剥離したりするおそれがあった。   However, some of the crawlers are of a type in which the heights of the two projecting portions protruding from the surface of the shoe plate tread surface are different from each other, and the conventional crawler belt pad is attached to the shoe plate tread surface portion. When attached, there was a gap between the top surface of the projection with a low height and the rubber pad for the crawler belt. In this case, earth and sand can easily enter the gap during traveling of the crawler type vehicle equipped with the crawler rubber pad, the crawler rubber pad is pushed up from the shoe plate tread portion, or the pad main body is peeled off from the core metal. There was a risk.

この発明は、このような事情を考慮してなされたもので、シュープレート踏面部の表面において履帯用ゴムパッド周方向の両端部にそれぞれ突設された突部の高さが互いに異なっていたとしても、これらの両突部の各頂面と履帯用ゴムパッドとの間に隙間が生ずるのを防ぐことができる履帯用ゴムパッドを提供することを目的とする。   The present invention has been made in consideration of such circumstances, and even if the heights of the protrusions respectively protruding from both ends of the crawler belt pad in the circumferential direction on the surface of the shoe plate tread surface are different from each other. Another object of the present invention is to provide a crawler belt rubber pad that can prevent a gap from being formed between the top surfaces of both protrusions and the crawler belt rubber pad.

上記課題を解決して、このような目的を達成するために、本発明の履帯用ゴムパッドは、芯金と、この芯金の踏面側に接着されたゴム製のパッド本体と、が備えられ、履帯用ゴムパッド周方向の両端部に履帯用ゴムパッド幅方向に延びる突部がそれぞれ突設されたシュープレート踏面部の表面に取り付けられる履帯用ゴムパッドであって、履帯用ゴムパッド周方向の両端部における反踏面側がそれぞれ、前記両突部の各頂面上に位置させられた状態で、前記シュープレート踏面部の表面に取り付けられて用いられ、この履帯用ゴムパッドの履帯用ゴムパッド周方向の端部における反踏面側には、前記パッド本体を形成するゴム材料よりもゴム硬度の低い材質により形成されて、この履帯用ゴムパッドを前記シュープレート踏面部の表面に取り付けたときに前記突部の頂面との間で厚さ方向に圧縮変形可能な圧接部が設けられ、この履帯用ゴムパッドにおいて前記圧接部を除いた部分における履帯用ゴムパッド周方向に沿った縦断面視形状は、履帯用ゴムパッド周方向の中央部を通る中心線に対して対称となっていることを特徴とする。
この発明によれば、履帯用ゴムパッドにおいてその周方向の端部における反踏面側に前記圧接部が設けられているので、シュープレート踏面部の表面において履帯用ゴムパッド周方向の両端部にそれぞれ突設された突部の高さが互いに異なっていても、高さの低い突部の頂面上に前記圧接部をその厚さ方向に圧縮変形させた状態で配置するとともに、高さの高い突部の頂面上に、履帯用ゴムパッドの履帯用ゴムパッド周方向における両端部のうちこの圧接部が設けられている一端部と反対側の他端部における反踏面側を当接させた状態で、この履帯用ゴムパッドをシュープレート踏面部の表面に取り付けることが可能になる。したがって、前記両突部の高さが互いに異なっていても、これら両突部の各頂面と履帯用ゴムパッドとの間に隙間が生ずるのを防ぐことができる。
さらに、この履帯用ゴムパッドにおいて前記圧接部を除いた部分における前記縦断面視形状が、前記中心線に対して対称となっているので、前述のように圧接部が圧縮変形可能とされていることと相俟って、この履帯用ゴムパッドに現行同等の汎用性を備えさせることが可能になるとともに、現行の芯金をそのまま適用することも可能になり、この履帯用ゴムパッドの高コスト化を確実に防ぐこともできる。 In order to solve the above problems and achieve such an object, the rubber pad for a crawler belt of the present invention includes a cored bar and a rubber pad main body bonded to the tread side of the cored bar, A crawler rubber pad attached to the surface of a shoe plate tread surface having protrusions extending in the width direction of the crawler rubber pad at both ends in the circumferential direction of the crawler rubber pad. The tread side is positioned on the top surfaces of the two protrusions, and is used by being attached to the surface of the shoe plate tread portion. The tread side is formed of a material having a rubber hardness lower than that of the rubber material forming the pad body, and the crawler belt pad is mounted on the surface of the shoe plate tread part. A longitudinally sectioned section along the circumferential direction of the rubber pad for the crawler belt in a portion of the rubber pad for the crawler belt excluding the pressure contact portion provided with a press-contact portion that is compressible and deformable in the thickness direction between the top surface of the protrusion The visual shape is characterized by being symmetric with respect to a center line passing through a central portion in the circumferential direction of the rubber pad for the crawler belt.
According to this invention, since the press contact portion is provided on the side opposite to the tread surface at the circumferential end of the crawler rubber pad, the crawler rubber pad protrudes from both ends in the circumferential direction on the surface of the shoe plate tread surface. Even if the heights of the projected protrusions are different from each other, the pressure contact portion is arranged in a state of being compressed and deformed in the thickness direction on the top surface of the projection having a low height, and the projection having a high height On the top surface of the crawler belt, in a state where the opposite tread surface side at the other end portion opposite to the one end portion where the press contact portion is provided in both ends of the crawler belt pad in the circumferential direction of the crawler belt pad, The crawler belt pad can be attached to the surface of the shoe plate tread. Therefore, even if the heights of the two protrusions are different from each other, it is possible to prevent a gap from being generated between the top surfaces of the two protrusions and the crawler belt rubber pad.
Furthermore, since the longitudinal cross-sectional view shape of the rubber pad for crawler belts excluding the press contact portion is symmetric with respect to the center line, the press contact portion can be compressed and deformed as described above. Together with this, it is possible to provide this track rubber pad with the same general versatility as it is, and it is also possible to apply the current core metal as it is, ensuring the high cost of this track rubber pad. It can also be prevented.

ここで、前記圧接部は、この履帯用ゴムパッドの履帯用ゴムパッド周方向の両端部における反踏面側にそれぞれ設けられ、この履帯用ゴムパッド全体の前記縦断面視形状が、前記中心線に対して対称となってもよい。
この場合、圧接部が、この履帯用ゴムパッドの履帯用ゴムパッド周方向の両端部における反踏面側にそれぞれ設けられているので、高さの低い突部の頂面上に一方の前記圧接部をその厚さ方向に圧縮変形させるとともに、高さの高い突部の頂面上に、他方の前記圧接部をその厚さ方向に前記一方の圧接部よりも大きく圧縮変形させた状態で、この履帯用ゴムパッドをシュープレート踏面部の表面に取り付けることが可能になる。
さらに、前記圧接部を含む履帯用ゴムパッド全体の前記縦断面視形状が、前記中心線に対して対称となっているので、この履帯用ゴムパッドを、前記両突部の高さの差が異なる多種のクローラ全てに適用することが可能になる。したがって、この履帯用ゴムパッドに、より一層の汎用性を具備させることが可能になり、製造コストを低減することができる。 Here, the press contact portions are respectively provided on the opposite tread surface side at both ends of the crawler belt pad in the circumferential direction of the crawler belt rubber pad, and the longitudinal sectional view shape of the entire crawler belt pad is symmetrical with respect to the center line. It may be.
In this case, since the press contact portions are respectively provided on the opposite tread surface side at both ends of the crawler belt pad in the circumferential direction of the crawler belt pad, one of the press contact portions is placed on the top surface of the projection having a low height. For this crawler belt, it is compressed and deformed in the thickness direction, and the other pressure contact portion is compressed and deformed larger in the thickness direction than the one pressure contact portion on the top surface of the projecting portion having a high height. A rubber pad can be attached to the surface of the shoe plate tread.
Further, since the longitudinal cross-sectional view shape of the entire crawler belt rubber pad including the press contact portion is symmetric with respect to the center line, the crawler belt pad is different from each other in the difference in height between the two protrusions. It becomes possible to apply to all crawlers. Accordingly, the crawler belt pad can be provided with more versatility, and the manufacturing cost can be reduced.

また、前記シュープレート踏面部の表面への取り付け部が、この履帯用ゴムパッドの履帯用ゴムパッド幅方向の両端部における反踏面側にそれぞれ設けられ、これらの取り付け部は、例えば芯金の履帯用ゴムパッド幅方向における一端部に形成されたボルト挿通孔と、芯金のパッド本体側の表面におけるボルト挿通孔の開口周縁部に溶接等の固定手段で取り付けられたナットと、芯金の裏面における履帯用ゴムパッド幅方向の他端部に溶接等の固定手段で取り付けられたフックと、を備えてもよい。
この場合、クローラ式走行体において機体右側に設けられたシュープレート、および機体左側に設けられたシュープレートの別を問わず、両シュープレートに共通してこの履帯用ゴムパッドを取り付けて前述の作用効果を奏功させることが可能になり、履帯用ゴムパッドの取り扱い性を向上させることができる。 Further, attachment portions to the surface of the shoe plate tread surface portion are respectively provided on the opposite tread surface side at both ends in the width direction of the crawler belt pad of the crawler belt, and these attachment portions are, for example, rubber pads for the crawler track A bolt insertion hole formed at one end in the width direction, a nut attached to the peripheral edge of the bolt insertion hole on the pad body side surface of the core metal by a fixing means such as welding, and a crawler belt on the back surface of the core metal And a hook attached to the other end portion in the rubber pad width direction by a fixing means such as welding.
In this case, regardless of the shoe plate provided on the right side of the machine body and the shoe plate provided on the left side of the machine body in the crawler type traveling body, the above-described effects can be obtained by attaching the rubber pad for the crawler belt in common to both shoe plates. It is possible to improve the handling of the rubber pad for the crawler belt.

この発明によれば、シュープレート踏面部の表面において履帯用ゴムパッド周方向の両端部にそれぞれ突設された突部の高さが互いに異なっていたとしても、これらの両突部の各頂面と履帯用ゴムパッドとの間に隙間が生ずるのを防ぐことができる。   According to the present invention, even if the heights of the protrusions projecting from both ends of the crawler rubber pad circumferential direction on the surface of the shoe plate tread surface are different from each other, It is possible to prevent a gap from occurring between the rubber pad for the crawler belt.

以下、本発明に係る履帯用ゴムパッドの一実施形態を、図１および図２を参照しながら説明する。
この履帯用ゴムパッド１０が装着されるクローラは、多数のシュープレート２１が図示されないリンクやピンを介して無端状に連結されて構成されている。シュープレート２１は、図２に示されるように上面視長方形状とされ、その長手方向がクローラの幅方向（以下、「履帯用ゴムパッド幅方向」という）Ｈに一致させられ、かつ短手方向がクローラの送り移動方向、つまりクローラの周方向（以下、「履帯用ゴムパッド周方向」という）Ｓに一致させられた状態で前述のように無端状に連結されている。 Hereinafter, an embodiment of a rubber pad for a crawler belt according to the present invention will be described with reference to FIGS. 1 and 2.
The crawler to which the crawler belt pad 10 is attached is constituted by a large number of shoe plates 21 connected endlessly via links and pins (not shown). As shown in FIG. 2, the shoe plate 21 has a rectangular shape when viewed from above, and its longitudinal direction is made to coincide with the crawler width direction (hereinafter referred to as “crawler rubber pad width direction”) H, and the short direction is As described above, they are connected endlessly in a state in which the crawler feed movement direction, that is, the crawler circumferential direction (hereinafter, referred to as “crawler belt circumferential direction”) S is matched.

また、このシュープレート２１は、表面に後述する履帯用ゴムパッド１０が取り付けられる踏面部（以下、シュープレート踏面部という）２２を備え、この踏面部２２の表面において履帯用ゴムパッド周方向Ｓの両端部にそれぞれ、履帯用ゴムパッド幅方向Ｈに連続して延びる第１、第２突部２３ａ、２３ｂが突設されている。さらに、図示の例では、シュープレート踏面部２２の表面において第１、第２突部２３ａ、２３ｂ同士の間の中央部にも、履帯用ゴムパッド幅方向Ｈに連続して延びる第３突部２３ｃが突設されている。これら３つの突部２３ａ、２３ｂ、２３ｃのうち、履帯用ゴムパッド周方向Ｓにおける一端側に位置する第２突部２３ｂは、第１、第３突部２３ａ、２３ｃよりもシュープレート踏面部２２の表面からの突出高さが低くなっている。これにより、シュープレート踏面部２２の履帯用ゴムパッド周方向Ｓに沿った縦断面視形状は、履帯用ゴムパッド周方向Ｓの中央部を通る中心線に対して非対称となっている。  Further, the shoe plate 21 includes a tread surface portion (hereinafter referred to as a shoe plate tread portion) 22 to which a later-described crawler rubber pad 10 is attached, and both ends of the crawler rubber pad circumferential direction S on the surface of the tread portion 22. In addition, first and second projecting portions 23a and 23b are provided so as to extend continuously in the crawler belt width direction H. Further, in the illustrated example, a third protrusion 23c that extends continuously in the crawler rubber pad width direction H also in the center between the first and second protrusions 23a and 23b on the surface of the shoe plate tread surface 22. Is protruding. Of these three protrusions 23a, 23b, 23c, the second protrusion 23b located on one end side in the crawler belt pad circumferential direction S is located on the shoe plate tread surface 22 more than the first and third protrusions 23a, 23c. The protruding height from the surface is low. Thereby, the longitudinal cross-sectional view shape of the shoe plate tread surface portion 22 along the crawler belt pad circumferential direction S is asymmetric with respect to the center line passing through the central portion of the crawler belt pad circumferential direction S.

ここで、履帯用ゴムパッド１０は、シュープレート踏面部２２の表面側に配置される芯金１１と、この芯金１１の踏面側に接着されたゴム製のパッド本体１２と、を備えている。   Here, the crawler belt pad 10 includes a core metal 11 disposed on the surface side of the shoe plate tread portion 22, and a rubber pad body 12 bonded to the tread surface side of the core metal 11.

芯金１１は、前述のようなシュープレート踏面部２２の表面の凹凸形状に沿った形状となるように例えば金属製の平板が折り曲げられて形成され、シュープレート踏面部２２の表面において第１突部２３ａと第３突部２３ｃとの間、および第２突部２３ｂと第３突部２３ｃとの間に嵌合可能に構成されている。また、芯金１１の上面視形状はシュープレート踏面部２２よりも若干小さい長方形状とされ、履帯用ゴムパッド１０をシュープレート踏面部２２に取り付けた状態で、この芯金１１は、シュープレート踏面部２２の表面の外周縁よりも内側に位置される大きさになっている。さらに、図示の例では、芯金１１の履帯用ゴムパッド周方向Ｓにおける両端部はそれぞれ、この履帯用ゴムパッド１０をシュープレート踏面部２２に取り付けた状態で、第１、第２突部２３ａ、２３ｂの各頂面よりも履帯用ゴムパッド周方向Ｓの内側に位置されるようになっている。  The cored bar 11 is formed by bending, for example, a metal flat plate so as to conform to the uneven shape of the surface of the shoe plate tread surface 22 as described above, and the first protrusion on the surface of the shoe plate tread surface portion 22. It is comprised so that a fitting is possible between the part 23a and the 3rd protrusion 23c, and between the 2nd protrusion 23b and the 3rd protrusion 23c. Further, the shape of the metal core 11 when viewed from above is a rectangular shape slightly smaller than the shoe plate tread surface portion 22, and the metal core 11 is attached to the shoe plate tread surface portion 22 with the crawler belt pad 10 attached to the shoe plate tread surface portion 22. The size is positioned inside the outer peripheral edge of the surface of 22. Further, in the illustrated example, both ends of the metal core 11 in the circumferential direction S of the crawler belt pad 1 have the first and second protrusions 23a, 23b in a state where the crawler rubber pad 10 is attached to the shoe plate tread surface portion 22, respectively. The crawler belt pad is positioned on the inner side in the circumferential direction S with respect to each top surface.

また、パッド本体１２において芯金１１側に位置する反踏面側の部分１２ａは、履帯用ゴムパッド周方向Ｓの両端部１２ｂ、１２ｃが履帯用ゴムパッド周方向Ｓの外方に向けて延出した鍔形状に形成され、これらの両端部１２ｂ、１２ｃ同士の間に位置する中央部分１２ｄが、芯金１１側に向けて膨出した形状に形成されて構成されている。さらに、前記反踏面側の部分１２ａの中央部分１２ｄは、芯金１１と同様に、シュープレート踏面部２２の表面に沿った形状とされて、シュープレート踏面部２２において第１突部２３ａと第３突部２３ｃとの間、および第２突部２３ｂと第３突部２３ｃとの間に嵌合可能に構成されている。  Further, in the pad main body 12, the opposite tread surface side portion 12 a located on the core metal 11 side has both ends 12 b and 12 c in the circumferential direction S of the crawler rubber pad extending outward in the circumferential direction S of the crawler rubber pad. A central portion 12d formed in a shape and located between the both end portions 12b and 12c is formed in a shape bulging toward the core metal 11 side. Further, the central portion 12d of the portion 12a on the side opposite to the tread surface is shaped along the surface of the shoe plate tread surface portion 22 in the same manner as the core metal 11, and the first protrusion 23a and the first protrusion 23a are formed on the shoe plate tread surface portion 22. It is configured to be able to fit between the three protrusions 23c and between the second protrusion 23b and the third protrusion 23c.

そして、この履帯用ゴムパッド１０をシュープレート踏面部２２の表面に取り付けた状態で、パッド本体１２の前記両端部１２ｂ、１２ｃがそれぞれ、第１、第２突部２３ａ、２３ｂの頂面上に位置されるようになっている。なお、パッド本体１２の上面視形状、つまりパッド本体１２を踏面側から見た平面視形状は、芯金１１よりも大きい長方形状となっている。すなわち、パッド本体１２は、履帯用ゴムパッド周方向Ｓの長さ、および履帯用ゴムパッド幅方向Ｈの長さが、芯金１１よりも長く、かつシュープレート踏面部２２と同等となっている。  Then, with the crawler belt pad 10 attached to the surface of the shoe plate tread portion 22, the both end portions 12b and 12c of the pad body 12 are positioned on the top surfaces of the first and second protrusions 23a and 23b, respectively. It has come to be. The top view shape of the pad body 12, that is, the plan view shape when the pad body 12 is viewed from the tread side is a rectangular shape larger than the core metal 11. That is, the pad main body 12 has a length in the circumferential direction S of the crawler rubber pad and a length in the width direction H of the crawler rubber pad longer than the core metal 11 and is equivalent to the shoe plate tread portion 22.

ここで、図示の例では、履帯用ゴムパッド１０の長手方向（履帯用ゴムパッド幅方向Ｈ）における両端部にそれぞれ、シュープレート踏面部２２の表面への取り付け部が設けられている。この取り付け部は、芯金１１の長手方向（履帯用ゴムパッド幅方向Ｈ）の一端部に形成されたボルト挿通孔１３と、芯金１１のパッド本体１２側の表面におけるボルト挿通孔１３の開口周縁部に溶接等の固定手段で取り付けられた袋ナット１４と、芯金１１の裏面における長手方向の他端部に溶接等の固定手段で取り付けられたフック２４と、を備えている。
この取り付け部によって、履帯用ゴムパッド１０は、フック２４を、シュープレート踏面部２２において機体側の端部に引っ掛けた状態で、ボルト２５を、シュープレート踏面部２２の裏面側からボトル挿通孔１３に挿入して袋ナット１４にねじ込むことにより、シュープレート踏面部２２の表面に取り付けられるようになっている。 Here, in the illustrated example, attachment portions to the surface of the shoe plate tread portion 22 are provided at both ends in the longitudinal direction of the crawler belt pad 10 (crawler belt width direction H). The attachment portion includes a bolt insertion hole 13 formed at one end in the longitudinal direction of the core metal 11 (crawler belt width direction H), and an opening peripheral edge of the bolt insertion hole 13 on the surface of the core metal 11 on the pad body 12 side. A cap nut 14 attached to the part by a fixing means such as welding, and a hook 24 attached to the other end in the longitudinal direction on the back surface of the core metal 11 by a fixing means such as welding.
With this attachment portion, the crawler rubber pad 10 allows the bolt 25 to be inserted into the bottle insertion hole 13 from the back surface side of the shoe plate tread surface portion 22 in a state where the hook 24 is hooked on the end of the shoe plate tread surface portion 22 on the machine body side. By inserting and screwing into the cap nut 14, the shoe plate tread 22 is attached to the surface.

そして、本実施形態では、パッド本体１２において前記反踏面側の部分１２ａの両端部１２ｂ、１２ｃにそれぞれ、パッド本体１２を形成するゴム材料よりもゴム硬度の低い材質で形成されて、この履帯用ゴムパッド１０をシュープレート踏面部２２の表面に取り付けたときに第１、第２突部２３ａ、２３ｂの頂面との間で厚さ方向に圧縮変形可能な圧接部１５が設けられている。また、この履帯用ゴムパッド１０において圧接部１５を除いた部分、つまり芯金１１およびパッド本体１２における履帯用ゴムパッド周方向Ｓに沿った縦断面視形状は、履帯用ゴムパッド周方向Ｓの中央部を通る中心線に対して対称となっている。   In the present embodiment, the pad main body 12 is formed of a material having a lower rubber hardness than the rubber material forming the pad main body 12 at both end portions 12b and 12c of the portion 12a on the counter tread surface side. When the rubber pad 10 is attached to the surface of the shoe plate tread surface portion 22, a pressure contact portion 15 that is compressively deformable in the thickness direction is provided between the top surfaces of the first and second protrusions 23 a and 23 b. Further, the portion of the crawler belt rubber pad 10 excluding the pressure contact portion 15, that is, the longitudinal sectional view shape along the crawler belt rubber pad circumferential direction S in the core metal 11 and the pad main body 12 has a central portion in the crawler rubber pad circumferential direction S. It is symmetric with respect to the passing center line.

なお、圧接部１５は、例えば樹脂、ゴム、ウレタン若しくはシリコン等で形成されている。また、この圧接部１５の厚さは例えば約５ｍｍとなっている。  Note that the press contact portion 15 is formed of, for example, resin, rubber, urethane, silicon, or the like. Moreover, the thickness of this press-contact part 15 is about 5 mm, for example.

さらに、本実施形態では、パッド本体１２の前記両端部１２ｂ、１２ｃにそれぞれ設けられた圧接部１５は互いに同形同大とされ、これらの圧接部１５、芯金１１およびパッド本体１２を有する履帯用ゴムパッド１０全体の前記縦断面視形状が、前記中心線に対して対称となっている。また、圧接部１５は、パッド本体１２の前記両端部１２ｂ、１２ｃをそれぞれ、その全域にわたって芯金１１側の裏面から被覆するように設けられている。なお、圧接部１５は、例えば加硫接着、接着剤若しくは粘着テープ等によってパッド本体１２の前記両端部１２ｂ、１２ｃに接着されている。   Further, in the present embodiment, the press contact portions 15 provided at the both end portions 12b and 12c of the pad main body 12 have the same shape and the same size, respectively, and the crawler belt having these press contact portions 15, the core metal 11 and the pad main body 12 The shape of the entire rubber pad 10 in a longitudinal sectional view is symmetric with respect to the center line. The pressure contact portion 15 is provided so as to cover the both end portions 12b and 12c of the pad main body 12 from the back surface on the core metal 11 side over the entire area. In addition, the press-contact part 15 is adhere | attached on the said both ends 12b and 12c of the pad main body 12, for example by vulcanization adhesion, an adhesive agent, or an adhesive tape.

すなわち、圧接部１５は、現行のパッド本体１２成形用の金型を用いて、芯金１１とパッド本体１２との接合体を形成した後に、この接合体を前記金型から取り出して、その後、この接合体に、例えば接着剤や粘着テープ等を介して接着されてもよいし、あるいは同一の金型を用いて、パッド本体１２と圧接部１５とを加硫成形して、これらを互いに加硫接着させるようにしてもよい。  That is, the press contact part 15 uses the current pad body 12 molding die to form a joined body of the core metal 11 and the pad body 12, and then removes the joined body from the mold. The bonded body may be bonded via, for example, an adhesive or an adhesive tape, or the pad main body 12 and the pressure contact portion 15 may be vulcanized using the same mold, and these may be added together. Sulfur bonding may be used.

以上のように構成された履帯用ゴムパッド１０を、シュープレート踏面部２２の表面に取り付けると、パッド本体１２の前記両端部１２ｂ、１２ｃにそれぞれ設けられた圧接部１５のうち、第１突部２３ａの頂面上に位置する一方の圧接部１５が、パッド本体１２と第１突部２３ａの頂面との間で厚さ方向に圧縮変形させられるとともに、第２突部２３ｂの頂面上に位置する他方の圧接部１５が、パッド本体１２と第２突部２３ｂの頂面との間で、前記一方の圧接部１５の圧縮変形量よりも小さく圧縮変形させられるようになっている。なお、本実施形態では、前記両圧接部１５はそれぞれ、第１、第２突部２３ａ、２３ｂの頂面上を、履帯用ゴムパッド幅方向Ｈの全長にわたって当接している。   When the crawler belt pad 10 configured as described above is attached to the surface of the shoe plate tread portion 22, the first protrusion 23a of the press contact portions 15 provided at the both ends 12b and 12c of the pad body 12 respectively. One pressure contact portion 15 located on the top surface of the first protrusion 23 is compressed and deformed in the thickness direction between the pad main body 12 and the top surface of the first protrusion 23a, and on the top surface of the second protrusion 23b. The other pressure contact portion 15 positioned is compressed and deformed between the pad main body 12 and the top surface of the second protrusion 23b to be smaller than the compression deformation amount of the one pressure contact portion 15. In the present embodiment, the two pressure contact portions 15 are in contact with the top surfaces of the first and second protrusions 23a and 23b over the entire length in the crawler rubber pad width direction H, respectively.

以上説明したように、本実施形態による履帯用ゴムパッド１０によれば、履帯用ゴムパッド１０に圧接部１５が設けられているので、シュープレート踏面部２２の表面に突設された第１、第２突部２３ａ、２３ｂの高さが互いに異なっていても、これら両突部２３ａ、２３ｂの各頂面と履帯用ゴムパッド１０との間に隙間が生ずるのを防ぐことができる。  As described above, according to the crawler belt rubber pad 10 according to the present embodiment, since the press contact portion 15 is provided on the crawler belt pad 10, the first and second protrusions projecting from the surface of the shoe plate tread portion 22. Even if the heights of the protrusions 23a and 23b are different from each other, it is possible to prevent a gap from being generated between the top surfaces of the protrusions 23a and 23b and the crawler belt pad 10.

また、本実施形態では、圧接部１５がパッド本体１２の前記両端部１２ｂ、１２ｃにそれぞれ設けられ、この圧接部１５を含む履帯用ゴムパッド１０全体の前記縦断面視形状が、前記中心線に対して対称となっているので、この履帯用ゴムパッド１０を、第１、第２突部２３ａ、２３ｂの高さの差が異なる多種のクローラ全てに適用することが可能になる。したがって、この履帯用ゴムパッド１０に、より一層の汎用性を具備させることが可能になり、製造コストを低減することができる。  Further, in the present embodiment, the press contact portion 15 is provided at each of the both end portions 12b and 12c of the pad body 12, and the shape of the longitudinal section of the entire crawler rubber pad 10 including the press contact portion 15 is Therefore, the crawler belt pad 10 can be applied to all of the various crawlers having different height differences between the first and second protrusions 23a and 23b. Therefore, the crawler belt pad 10 can be provided with more versatility, and the manufacturing cost can be reduced.

さらに、本実施形態では、前記取り付け部が、この履帯用ゴムパッド１０の履帯用ゴムパッド幅方向Ｈにおける両端部それぞれの反踏面側に設けられるとともに、前述のように圧接部１５がこの履帯用ゴムパッド１０の履帯用ゴムパッド周方向Ｓの両端部にそれぞれ設けられているので、クローラ式走行体において機体右側に設けられたシュープレート２１、および機体左側に設けられたシュープレート２１の別を問わず、両シュープレート２１に共通してこの履帯用ゴムパッド１０を取り付けて前述の作用効果を奏功させることが可能になり、履帯用ゴムパッド１０の取り扱い性を向上させることができる。  Furthermore, in the present embodiment, the attachment portion is provided on the opposite tread surface side of each end portion of the crawler belt pad 10 in the width direction H of the crawler belt pad, and the press contact portion 15 is provided on the crawler rubber pad 10 as described above. The crawler-type rubber pad is provided at both ends in the circumferential direction S, so that both the shoe plate 21 provided on the right side of the machine body and the shoe plate 21 provided on the left side of the machine body are different. By attaching this crawler belt rubber pad 10 in common to the shoe plate 21, it becomes possible to achieve the above-described effects, and the handleability of the crawler rubber pad 10 can be improved.

なお、本発明の技術的範囲は前記実施の形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。
例えば、前記実施形態では、パッド本体１２の前記両端部１２ｂ、１２ｃにそれぞれ設けた圧接部１５を同形同大にしたが、形状および寸法を互いに異ならせるようにしてもよい。 The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the press contact portions 15 provided on the both end portions 12b and 12c of the pad main body 12 have the same shape and size, but the shapes and dimensions may be different from each other.

また、前記実施形態では、圧接部１５を、パッド本体１２の前記両端部１２ｂ、１２ｃにそれぞれ形成したが、これらの両端部１２ｂ、１２ｃのうち少なくとも、第２突部２３ｂの頂面上に位置させられる端部１２ｃにのみ設けてもよい。
この構成においても、高さの低い第２突部２３ｂの頂面上に圧接部１５を配置してこの圧接部１５をその厚さ方向に圧縮変形させるとともに、高さの高い第１突部２３ａの頂面上に、履帯用ゴムパッド１０の履帯用ゴムパッド周方向Ｓにおける両端部のうちこの圧接部１５が設けられている一端部と反対側の他端部における反踏面側を当接させた状態で、この履帯用ゴムパッド１０をシュープレート踏面部２２の表面に取り付けることが可能になり、前記隙間が生ずるのを防ぐことができる。
ここで、この構成において、圧接部１５の厚さを、多種のクローラの中で最大となる、第１、第２突部２３ａ、２３ｂの高さの差以上の大きさにすれば、この一種類の履帯用ゴムパッドを、これら全てのクローラについて適用することが可能になり、この履帯用ゴムパッドに良好な汎用性を具備させることができ、その高コスト化を確実に抑えることができる。
さらに、この履帯用ゴムパッド１０において圧接部１５を除いた部分における前記縦断面視形状が、前記中心線に対して対称となっていれば、前述のように圧接部１５が圧縮変形可能とされていることと相俟って、この履帯用ゴムパッド１０に現行同等の汎用性を備えさせることが可能になるとともに、現行の芯金をそのまま適用することも可能になり、この履帯用ゴムパッド１０の高コスト化を確実に防ぐこともできる。 Moreover, in the said embodiment, although the press-contact part 15 was each formed in the said both ends 12b and 12c of the pad main body 12, it is located on the top surface of the 2nd protrusion 23b at least among these both ends 12b and 12c. You may provide only in the edge part 12c made to be made.
Also in this configuration, the pressure contact portion 15 is disposed on the top surface of the second protrusion 23b having a low height, the pressure contact portion 15 is compressed and deformed in the thickness direction, and the first protrusion 23a having a high height is also provided. A state in which the opposite tread surface side of the other end portion on the opposite side to the one end portion where the press contact portion 15 is provided in the both ends of the crawler belt pad 10 in the circumferential direction S of the crawler belt is brought into contact with the top surface of the crawler belt. Thus, the crawler belt pad 10 can be attached to the surface of the shoe plate tread portion 22, and the gap can be prevented from being generated.
Here, in this configuration, if the thickness of the pressure contact portion 15 is greater than the difference between the heights of the first and second protrusions 23a and 23b, which is the largest among the various crawlers, this one is obtained. The type of crawler rubber pad can be applied to all of these crawlers, and the crawler rubber pad can be provided with good versatility, and its cost increase can be reliably suppressed.
Further, if the shape of the crawler belt pad 10 excluding the press contact portion 15 is symmetrical with respect to the center line, the press contact portion 15 can be compressed and deformed as described above. In combination with this, it is possible to provide the crawler rubber pad 10 with the same general versatility as it is and to apply the current core metal as it is. Costs can also be prevented reliably.

さらに、前記実施形態に代えて、例えば図３に示されるように、パッド本体１２において履帯用ゴムパッド周方向Ｓの両端部全体をそれぞれ、このパッド本体１２においてこれらの両端部を除いた部分を形成するゴム材料よりもゴム硬度の低い前述した材質により形成し、これらの両端部全体をそれぞれ圧接部１５としてもよい。なお、本実施形態では、パッド本体１２の前記両端部において、踏面側および反踏面側を含む厚さ方向の全域、かつ履帯用ゴムパッド幅方向Ｈの全域が圧接部１５となっている。  Further, instead of the above-described embodiment, for example, as shown in FIG. 3, the entire pad body 12 has both ends in the circumferential direction S of the crawler belt pad, and the pad body 12 is formed by excluding these both ends. The rubber material may be made of the above-described material having a rubber hardness lower than that of the rubber material. In the present embodiment, in the both end portions of the pad main body 12, the entire region in the thickness direction including the tread surface side and the counter tread surface side and the entire region in the crawler belt width direction H are the press contact portions 15.

また、履帯用ゴムパッド１０をシュープレート踏面部２２の表面に取り付ける手段は、前記実施形態に限らず種々の手段を用いてもよい。
さらに、芯金１１において履帯用ゴムパッド周方向Ｓの両端部を、第１、第２突部２３ａ、２３ｂの各頂面よりも履帯用ゴムパッド周方向Ｓの内側に位置させたが、これらの両端部をさらに履帯用ゴムパッド周方向Ｓの外側に向けて延長して前記各頂面上に位置させるようにしてもよい。この構成において、圧接部１５は、芯金１１の裏面において前記頂面上に位置させられる部分に接着してもよい。すなわち、芯金１１において前記頂面上に位置させられる部分を、その厚さ方向に圧接部１５とパッド本体１２とで挟み込むように圧接部１５を設けてもよい。 The means for attaching the crawler belt pad 10 to the surface of the shoe plate tread portion 22 is not limited to the above-described embodiment, and various means may be used.
Furthermore, both ends of the crawler rubber pad circumferential direction S in the metal core 11 are positioned inside the crawler rubber pad circumferential direction S from the top surfaces of the first and second protrusions 23a and 23b. The portion may be further extended toward the outside in the circumferential direction S of the crawler rubber pad so as to be positioned on each top surface. In this configuration, the press contact portion 15 may be bonded to a portion located on the top surface on the back surface of the core metal 11. That is, the press contact portion 15 may be provided so that a portion of the core metal 11 positioned on the top surface is sandwiched between the press contact portion 15 and the pad main body 12 in the thickness direction.

シュープレート踏面部の表面において履帯用ゴムパッド周方向の両端部にそれぞれ突設された突部の高さが互いに異なっていたとしても、これらの両突部の各頂面と履帯用ゴムパッドとの間に隙間が生ずるのを防ぐことができる。  Even if the height of the protrusions projecting from both ends in the circumferential direction of the crawler rubber pad on the surface of the shoe plate tread surface is different from each other, the distance between each top surface of these protrusions and the crawler rubber pad It is possible to prevent a gap from being generated.

本発明に係る一実施形態として示した履帯用ゴムパッドをシュープレート踏面部に取り付けた状態を示す側面図である。It is a side view which shows the state which attached the rubber pad for crawler belts shown as one Embodiment which concerns on this invention to the shoe plate tread part. 図１に示す履帯用ゴムパッドおよびシュープレートの分解斜視図である。It is a disassembled perspective view of the rubber pad for crawler belts shown in FIG. 1, and a shoe plate. 本発明に係る他の実施形態として示した履帯用ゴムパッドをシュープレート踏面部に取り付けた状態を示す側面図である。It is a side view which shows the state which attached the rubber pad for crawler belts shown as other embodiment which concerns on this invention to the shoe plate tread part.

符号の説明Explanation of symbols

１０ 履帯用ゴムパッド
１１ 芯金
１２ パッド本体
１５ 圧接部
２２ シュープレート踏面部
２３ａ 第１突部（突部）
２３ｂ 第２突部（突部）
Ｈ 履帯用ゴムパッド幅方向
Ｓ 履帯用ゴムパッド周方向

DESCRIPTION OF SYMBOLS 10 Rubber pad for crawler belt 11 Core metal 12 Pad main body 15 Pressure contact part 22 Shoe plate tread part 23a 1st protrusion (protrusion part)
23b Second protrusion (protrusion)
H Track rubber pad width direction S Track rubber pad circumferential direction

Claims (2)

芯金と、この芯金の踏面側に接着されたゴム製のパッド本体と、が備えられ、
履帯用ゴムパッド周方向の両端部に履帯用ゴムパッド幅方向に延びる突部がそれぞれ突設されたシュープレート踏面部の表面に取り付けられる履帯用ゴムパッドであって、
履帯用ゴムパッド周方向の両端部における反踏面側がそれぞれ、前記両突部の各頂面上に位置させられた状態で、前記シュープレート踏面部の表面に取り付けられて用いられ、
この履帯用ゴムパッドの履帯用ゴムパッド周方向の端部における反踏面側には、前記パッド本体を形成するゴム材料よりもゴム硬度の低い材質により形成されて、この履帯用ゴムパッドを前記シュープレート踏面部の表面に取り付けたときに前記突部の頂面との間で厚さ方向に圧縮変形可能な圧接部が設けられ、
この履帯用ゴムパッドにおいて前記圧接部を除いた部分における履帯用ゴムパッド周方向に沿った縦断面視形状は、履帯用ゴムパッド周方向の中央部を通る中心線に対して対称となっていることを特徴とする履帯用ゴムパッド。 A metal core and a rubber pad body bonded to the tread surface side of the metal core;
A rubber pad for a crawler belt attached to the surface of a shoe plate tread surface portion having protrusions extending in the width direction of the crawler rubber pad projecting at both ends in the circumferential direction of the rubber pad for the crawler belt,
In the state where the opposite tread surface side at both ends in the circumferential direction of the rubber pad for the crawler belt is located on each top surface of the both protrusions, it is used by being attached to the surface of the shoe plate tread portion,
The crawler rubber pad is formed of a material having a lower rubber hardness than the rubber material forming the pad main body on the side opposite to the crawler rubber pad circumferential end of the crawler rubber pad, and the crawler rubber pad is connected to the shoe plate tread part. A pressure contact portion that is compressible and deformable in the thickness direction between the top surface of the protrusion when attached to the surface of
In this crawler belt pad, the shape of the section along the circumferential direction of the crawler rubber pad in the portion excluding the pressure contact portion is symmetrical with respect to the center line passing through the central portion of the crawler rubber pad circumferential direction. Rubber pad for crawler belt. 請求項１記載の履帯用ゴムパッドであって、
前記圧接部は、この履帯用ゴムパッドの履帯用ゴムパッド周方向の両端部における反踏面側にそれぞれ設けられ、この履帯用ゴムパッド全体の前記縦断面視形状が、前記中心線に対して対称となっていることを特徴とする履帯用ゴムパッド。 A rubber pad for a crawler belt according to claim 1,
The press contact portions are respectively provided on the opposite tread surface sides of both ends of the crawler rubber pad in the circumferential direction of the crawler rubber pad, and the longitudinal sectional view shape of the entire crawler rubber pad is symmetrical with respect to the center line. A rubber pad for a crawler belt.
JP2007145301A 2007-05-31 2007-05-31 Rubber pad for crawler Withdrawn JP2008296742A (en)

Priority Applications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013091431A (en) * 2011-10-26 2013-05-16 Bridgestone Corp Crawler pad
JP2015085698A (en) * 2013-10-28 2015-05-07 株式会社イノアックコーポレーション Crawler rubber pad
EP3441290A1 (en) * 2017-08-07 2019-02-13 TR Beltrack Co., Ltd. Crawler pad with improved durability
CN112519907A (en) * 2020-12-21 2021-03-19 三一重型装备有限公司 Crawler device, traveling mechanism and operating equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013091431A (en) * 2011-10-26 2013-05-16 Bridgestone Corp Crawler pad
JP2015085698A (en) * 2013-10-28 2015-05-07 株式会社イノアックコーポレーション Crawler rubber pad
EP3441290A1 (en) * 2017-08-07 2019-02-13 TR Beltrack Co., Ltd. Crawler pad with improved durability
CN112519907A (en) * 2020-12-21 2021-03-19 三一重型装备有限公司 Crawler device, traveling mechanism and operating equipment

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