JPH07223565A - Rubber crawler belt for working vehicle for railroad construction - Google Patents

Abstract

PURPOSE:To improve the insulation resistance of a rubber crawler belt for a working vehicle for railway construction, at a law cost, without deteriorating strength. CONSTITUTION:A core metal 1 and wires 4 which are arranged in parallel are integrally embedded in the peripheral direction in a flexible strip-shaped insulating layer on the grounded surface side of the wire 4 of a rubber belt which is shaped to an endless belt form by a rubber crawler 5. The insulating layer is made of the insulating rubber material or synthetic resin material. Accordingly, the insulation resistance is increased, and strength is not deteriorated, and cost reduction is achieved.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、鉄道保線工事用の履帯
式作業車のゴム履帯の構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a rubber crawler track of a crawler type work vehicle for railway track maintenance work.

【０００２】[0002]

【従来の技術】鉄道保線工事に使用する履帯式作業車は
図５に示すように、左右の履帯１０、１１を左右のレー
ル１２、１３上に跨がって乗せ、作業を行う。左右のレ
ール１２、１３の間には信号電圧Ｖが印加されており、
作業車がレール１２、１３上に乗った場合これが短絡
し、信号が感応して変化しないことが要求される。すな
わち、作業車がレール１２、１３上に乗った場合、レー
ル１２、１３間の絶縁抵抗値が、例えば乾燥状態で１Ｍ
Ω以上というように規定されている。2. Description of the Related Art As shown in FIG. 5, a crawler-type work vehicle used for railway track maintenance work is carried out by placing left and right crawler tracks 10 and 11 on left and right rails 12 and 13, respectively. A signal voltage V is applied between the left and right rails 12 and 13,
When the work vehicle rides on the rails 12 and 13, it is short-circuited and it is required that the signal be sensitive and unchanged. That is, when the work vehicle rides on the rails 12 and 13, the insulation resistance value between the rails 12 and 13 is, for example, 1M in a dry state.
It is specified as Ω or more.

【０００３】作業車のゴム履帯は図６に示すように、下
転輪転動面２と左右の翼部３とを有する芯金１と、抗張
体である無端状のワイヤ４とを一体に成形する無端帯状
のゴムクローラ２０により構成されている。通常、ゴム
クローラは補強材であるカーボンブラックが配合（３０
％程度）されている。しかしながら、カーボンブラック
の配合量が多いと、前記の絶縁抵抗の規定値を満足しな
い場合が多い。そのため、鉄道工事用車両のゴム履帯に
おいては、図７に示すように、通常のゴム材質部の２１
の接地部分に、カーボンブラックの少ない絶縁ゴム２２
を用いている。As shown in FIG. 6, a rubber crawler belt of a work vehicle is composed of a core metal 1 having a lower rolling surface 2 and left and right blades 3 and an endless wire 4 which is a tensile body. It is composed of an endless belt-shaped rubber crawler 20 to be molded. Generally, rubber crawlers are blended with carbon black as a reinforcing material (30
%). However, when the blending amount of carbon black is large, the above-mentioned specified value of the insulation resistance is often not satisfied. Therefore, as shown in FIG. 7, in the rubber crawler track of a railroad vehicle, the rubber crawler of a normal rubber material portion is
Insulating rubber 22 with little carbon black on the grounding part of
Is used.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら、上記構
成では接地部分に補強材であるカーボンブラックの少な
い絶縁ゴム２２を使用しているため、強度が不足し、破
損し易く、磨耗寿命も短い。この場合の絶縁能力は規定
値の１０² 〜１０³ 倍あり、絶縁力過剰である。However, in the above construction, since the insulating rubber 22 having a small amount of carbon black, which is a reinforcing material, is used in the ground contact portion, the strength is insufficient, the material is easily damaged, and the wear life is short. In this case, the insulation capacity is 10 ² to 10 ³ times the specified value, and the insulation force is excessive.

【０００５】また、強度不足の対策としては、カーボン
ブラックに変わる補強材としてシリカ等を配合する場合
があるが、この場合コストが高いという問題がある。Further, as a measure for the lack of strength, silica or the like may be blended as a reinforcing material in place of carbon black, but in this case, there is a problem that the cost is high.

【０００６】本発明は上記問題点に着目してなされたも
ので、適切な絶縁力を有し、強度的に問題がなく、か
つ、コストも安い鉄道工事用作業車のゴム履帯を提供す
ることを目的としている。The present invention has been made in view of the above problems, and provides a rubber crawler for a work vehicle for railway construction which has an appropriate insulating force, has no problem in strength, and is low in cost. It is an object.

【０００７】[0007]

【課題を解決するための手段】上記目的を達成するため
に、本発明に係る鉄道工事用作業車のゴム履帯は、中央
部の下転輪転動面をなす突起部と、左右翼部とからなる
芯金を並設し、前記芯金の接地面側に抗張部材を周方向
に配設し、無端帯状のゴムクローラにより一体成形して
なる装軌車両のゴム履帯において、前記抗張部材の接地
面側に、可撓性のある帯状の絶縁層を周方向に埋設した
ことを特徴としている。In order to achieve the above object, a rubber crawler track for a work vehicle for railway construction according to the present invention comprises a protrusion forming a lower rolling surface of a central portion and left and right wings. In a rubber crawler track of a tracked vehicle, in which a core bar is arranged in parallel, a tensile member is circumferentially disposed on the grounding surface side of the core bar, and integrally molded by an endless belt-shaped rubber crawler, the tensile member is It is characterized in that a flexible band-shaped insulating layer is embedded in the circumferential direction on the side of the ground plane.

【０００８】そしてこの鉄道工事用作業車のゴム履帯に
おいて、前記絶縁層の絶縁抵抗は、前記ゴムクローラの
絶縁抵抗よりも高いことを特徴としている。In the rubber track of the work vehicle for railway work, the insulation resistance of the insulating layer is higher than the insulation resistance of the rubber crawler.

【０００９】さらに、この鉄道工事用作業車のゴム履帯
は、前記絶縁層は非金属材であることを特徴としてい
る。Further, the rubber crawler track of the work vehicle for railway construction is characterized in that the insulating layer is made of a non-metallic material.

【００１０】また、この鉄道工事用作業車のゴム履帯
は、前記絶縁層はゴム材であることを特徴としている。Further, in the rubber crawler track of the work vehicle for railway construction, the insulating layer is made of a rubber material.

【００１１】また、この鉄道工事用作業車のゴム履帯
は、前記絶縁層は合成樹脂材であることを特徴としてい
る。Further, the rubber crawler track of the work vehicle for railway construction is characterized in that the insulating layer is made of a synthetic resin material.

【００１２】[0012]

【作用】上記構成によれば、ゴム履帯のゴムクローラに
埋設された抗張部材の接地面側に、ゴムクローラよりも
絶縁抵抗の高い絶縁層を設け、その絶縁層を非金属材で
あるゴム材、あるいは合成樹脂材で構成した。そのた
め、左右の履帯間の絶縁抵抗値は所定の値が保償され
る。According to the above construction, an insulating layer having a higher insulation resistance than that of the rubber crawler is provided on the grounding surface side of the tensile member embedded in the rubber crawler of the rubber crawler, and the insulating layer is made of a non-metallic rubber. Material or synthetic resin material. Therefore, the insulation resistance value between the left and right crawler belts is maintained at a predetermined value.

【００１３】[0013]

【実施例】以下に、本発明に係る鉄道工事用作業車のゴ
ム履帯の実施例について、図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rubber crawler track for a work vehicle for railway construction according to the present invention will be described below with reference to the drawings.

【００１４】図１はゴム履帯の第１実施例の断面図であ
り、図２は図１のＡ−Ａ断面を示す。１は下転輪転動面
２および左右の翼部３よりなる芯金であり、４は抗張体
であるワイヤであり、５はゴムクローラ、６は帯状の絶
縁層で、左右に分割されている。この絶縁層は可撓性の
ある非金属材であり、絶縁ゴム材、あるいは、合成樹脂
材である。絶縁抵抗はゴムクローラ５より高い。したが
って、図５に示すように、左右の履帯１０、１１が左右
のレール１２、１３上に跨がって乗った場合でも絶縁抵
抗は規定値を満足することができるとともに、絶縁抵抗
値は過剰になることはない。FIG. 1 is a sectional view of a first embodiment of a rubber crawler belt, and FIG. 2 is a sectional view taken along line AA of FIG. Reference numeral 1 is a cored bar composed of a lower rolling surface 2 and left and right blades 3, 4 is a wire which is a tensile body, 5 is a rubber crawler, and 6 is a strip-shaped insulating layer, which is divided into left and right. There is. This insulating layer is a flexible non-metallic material, such as an insulating rubber material or a synthetic resin material. The insulation resistance is higher than that of the rubber crawler 5. Therefore, as shown in FIG. 5, even when the left and right crawler belts 10 and 11 ride on the left and right rails 12 and 13, the insulation resistance can satisfy the specified value and the insulation resistance value is excessive. Never be.

【００１５】図３はゴム履帯の第２実施例の断面図であ
り、絶縁層７は履帯の全幅にわたっている。構成部材や
材質等は第１実施例と同一なので説明は省略する。FIG. 3 is a cross-sectional view of the second embodiment of the rubber track, in which the insulating layer 7 extends over the entire width of the track. The constituent members, materials and the like are the same as those in the first embodiment, and the description thereof will be omitted.

【００１６】図４はゴム履帯の第３実施例であり、絶縁
層８でワイヤ４を被覆している。そして、効果はいずれ
も第１実施例と同一である。FIG. 4 shows a third embodiment of the rubber crawler belt, in which the wire 4 is covered with the insulating layer 8. The effects are the same as those in the first embodiment.

【００１７】[0017]

【発明の効果】以上説明したように、本発明は、鉄道工
事用作業車のゴム履帯を、芯金と、ワイヤとをゴムクロ
ーラにより一体成形し、ワイヤの接地面側に無端帯状の
絶縁層を埋設した。そして、絶縁層を可撓性のある非金
属材である、絶縁ゴム材、あるいは合成樹脂材としたた
め、左右の履帯間の絶縁抵抗は適切な値となり、強度的
には問題なく、コストも安い鉄道工事用作業車のゴム履
帯が得られる。As described above, according to the present invention, the rubber crawler belt of the work vehicle for railway construction is integrally formed with the core metal and the wire by the rubber crawler, and the endless insulating layer is formed on the grounding surface side of the wire. Buried. Since the insulating layer is made of a flexible non-metal material such as an insulating rubber material or a synthetic resin material, the insulation resistance between the left and right crawler belts has an appropriate value, there is no problem in strength, and the cost is low. Rubber tracks for railroad work vehicles can be obtained.

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

【図１】本発明のゴム履帯の第１実施例の横断面図であ
る。FIG. 1 is a cross-sectional view of a first embodiment of a rubber crawler belt of the present invention.

【図２】本発明のゴム履帯の第１実施例の縦断面図であ
る。FIG. 2 is a vertical cross-sectional view of the first embodiment of the rubber crawler belt of the present invention.

【図３】本発明のゴム履帯の第２実施例の横断面図であ
る。FIG. 3 is a cross-sectional view of a second embodiment of the rubber crawler belt of the present invention.

【図４】本発明のゴム履帯の第３実施例の横断面図であ
る。FIG. 4 is a cross-sectional view of a third embodiment of the rubber crawler belt of the present invention.

【図５】鉄道工事用作業車の作業中の正面図である。FIG. 5 is a front view of the work vehicle for railway work during work.

【図６】従来の通常ゴム履帯の横断面図である。FIG. 6 is a cross-sectional view of a conventional normal rubber crawler track.

【図７】従来の鉄道工事用作業車のゴム履帯の用断面図
である。FIG. 7 is a sectional view of a rubber crawler track of a conventional work vehicle for railway construction.

【符号の説明】[Explanation of symbols]

１‥‥芯金、４‥‥ワイヤ、５‥‥ゴムクローラ、６、
７、８‥‥絶縁層。1 ... Core bar, 4 ... Wire, 5 ... Rubber crawler, 6,
7, 8 ... Insulating layer.

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 中央部の下転輪転動面をなす突起部と、
左右翼部とからなる芯金を並設し、前記芯金の接地面側
に抗張部材を周方向に配設し、無端帯状のゴムクローラ
により一体成形してなる装軌車両のゴム履帯において、
前記抗張部材の接地面側に、可撓性のある帯状の絶縁層
を周方向に埋設したことを特徴とする鉄道工事用作業車
のゴム履帯。1. A projection portion forming a lower rolling surface of a central portion,
A rubber crawler for a tracked vehicle in which a cored bar composed of right and left wings is provided in parallel, a tensile member is circumferentially disposed on the grounding surface side of the cored bar, and integrally molded by an endless band-shaped rubber crawler. ,
A rubber crawler track for a work vehicle for railway construction, wherein a flexible band-shaped insulating layer is embedded in the circumferential direction on the grounding surface side of the tensile member. 【請求項２】 前記絶縁層の絶縁抵抗は、前記ゴムクロ
ーラの絶縁抵抗よりも高いことを特徴とする請求項１の
鉄道工事用作業車のゴム履帯。2. The rubber track of a work vehicle for railway construction according to claim 1, wherein the insulation resistance of the insulating layer is higher than the insulation resistance of the rubber crawler. 【請求項３】 前記絶縁層は非金属材であることを特徴
とする請求項２の鉄道工事用作業車のゴム履帯。3. The rubber track of a work vehicle for railway construction according to claim 2, wherein the insulating layer is made of a non-metallic material. 【請求項４】 前記絶縁層はゴム材であることを特徴と
する請求項３の鉄道工事用作業車のゴム履帯。4. The rubber track according to claim 3, wherein the insulating layer is a rubber material. 【請求項５】 前記絶縁層は合成樹脂材であることを特
徴とする請求項３の鉄道工事用作業車のゴム履帯。5. The rubber track according to claim 3, wherein the insulating layer is a synthetic resin material.