JP2004270799A - Spacer for wheel - Google Patents

Spacer for wheel Download PDF

Info

Publication number
JP2004270799A
JP2004270799A JP2003062364A JP2003062364A JP2004270799A JP 2004270799 A JP2004270799 A JP 2004270799A JP 2003062364 A JP2003062364 A JP 2003062364A JP 2003062364 A JP2003062364 A JP 2003062364A JP 2004270799 A JP2004270799 A JP 2004270799A
Authority
JP
Japan
Prior art keywords
spacer
wheel
axle
pair
halves
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.)
Pending
Application number
JP2003062364A
Other languages
Japanese (ja)
Inventor
Toshiyuki Mikami
敏之 三上
Yoshitaka Iwakura
由高 岩倉
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co Ltd
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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP2003062364A priority Critical patent/JP2004270799A/en
Publication of JP2004270799A publication Critical patent/JP2004270799A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To enable easy replacement work without disassembling a wheel and the like, improve safety characteristics of spacer replacement work, reduce replacement cost and shorten working time. <P>SOLUTION: A spacer 20 is inserted into a clearance between the wheel rotatably supported by a plain bearing and the plain bearing. The spacer 20 is an approximately square plate body structured by combining a pair of spacer half bodies 22, 22 with a connector 30 and a fastener 40. At an approximate center of the spacer 20, an insertion hole 20a of which size allows an axle shaft to be inserted is opened. By removing the fastener 40 of an end part and rotating the spacer half bodies 22, 22 outward with the connector 30 of the other end as its fulcrum, easy insertion between the wheel and the plain bearing is enabled. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、車輪と、この車輪を支持するすべり軸受との隙間に介在する車輪用スペーサに関するものである。
【0002】
【従来の技術】
大型の天井走行クレーン等は、吊荷装置が付設される本体の両端に台車を設け、該台車に配設した車輪を軸受で支持して自在に移動するよう構成されている。この軸受の種類は、すべり軸受やころがり軸受等の種類があり、天井走行クレーンの場合、台車に用いられる車輪は高速回転する必要がないことから、構造が簡単で耐荷重が大きい等のメリットがあるすべり軸受が一般的に用いられている。図4に示す如く、前記台車には車輪12の軸方向に離間する一対の車輪支持部16,16が設けられ、この車輪支持部16に設けられたすべり軸受18を介して、レール11等の軌道上に載置される車輪12の両軸端面から突出する車軸14が回転自在に支持されている。なお、各車輪支持部16には、車軸14を位置決めするブラケット15が複数のボルト17を介して着脱自在に配設されており(図5参照)、該ブラケット15を車輪支持部16から取外すことで、前記車輪12の交換を行ない得るようになっている。また、前記車軸14とすべり軸受18との摺接面には、ブラケット15に設けられたオイルボックス19から潤滑油が供給され、この潤滑油が形成する油膜により摺接面の摩擦を軽減し、前記車輪12の滑らかな回転を図っている。
【0003】
前記天井走行クレーンの場合は、本体の両端に配設された台車の間で貨物を吊り上げる構造故に、前記すべり軸受18には、自重や吊り荷による車軸14の径方向のラジアル荷重のみでなく、軸方向のスラスト荷重がかかる。すなわち、前記車輪支持部16が軸方向に移動し、前記車輪12の軸端面(フランジ面12a)と、対向する車輪支持部16の側面あるいはすべり軸受18の端面(スラスト面16a)とが摺接してしまう虞れがある。この摺接面はすべり軸受18と違い、潤滑油が供給されていないので、フランジ面12aとスラスト面16aは経時的に摩耗してしまう。従って、軸方向への逃げに対してフランジ面12aとスラスト面16aとの隙間を調整すると共に、該フランジ面12aとスラスト面16aとが直接摺接することを防止するため、この隙間にはスペーサ13が介在している。
【0004】
前記スペーサ13は、図6に示すように、前記車軸14の通過を許容し得る寸法の挿通孔13aが、略中心に開設されたドーナツ状の円板であり、その材質としては、例えば鋳造が容易で、耐磨耗性、耐腐食性に優れた砲金等が用いられている。すなわち、前記スペーサ13の挿通孔13aに車軸14を挿通し、前記フランジ面12aとスラスト面16aとの間に該スペーサ13を介在させることで、スラスト荷重によりフランジ面12aとスラスト面16aとが直接摺擦することを無くし、該スペーサ13自身が摩耗することで車輪12や車輪支持部16およびすべり軸受18に対する損傷を抑制している。また、前記スペーサ13はレール11の敷設許容誤差に対するフランジ面12aとスラスト面16aとの隙間を調整する役割も担っている。なお、すべり軸受により車軸を支持する装置において、すべり軸受自体にスペーサを着脱自在に取付けるものもある(例えば、特許文献1参照)。
【0005】
【特許文献1】
特開2002−67950号公報
【0006】
【発明が解決しようとする課題】
前記スペーサ13は経時的に摩耗するため、該スペーサ13が磨り減って機能しなくなる前に交換する必要がある。前記スペーサ13はドーナツ状であるため、その着脱は必ず車軸14の先端から行なわなければならない。すなわち、古いスペーサ13は前記車軸14の先端から抜き取り、新しいスペーサ13はその挿通孔13aを車軸14の先端から通して取付けなければならない。従って、スペーサ13の交換に際しては、前記車輪12を車輪支持部16から取外す煩雑な作業が必要である。また、車輪12の取外しおよび取付けには、別の大型重機を使用する必要があるため、非常に手間と時間とがかかる問題が指摘される。殊に天井走行クレーンの場合、前記スペーサ13の交換は高所作業であるから、作業者は長時間に亘って危険な状態での作業を強いられている。
【0007】
また、前記スペーサ13の交換作業は手間がかかるため、該スペーサ13の摩耗状況に合わせたタイムリーな交換が実施できず、車輪12や車輪支持部16の摩耗等の二次的な摩耗トラブルが発生する虞れがある。更に、前記スペーサ13は、砲金等の金属材料を用いているために重量があって取り扱い性が悪いので、前述した交換作業をより困難にしている。なお、前記特許文献1に開示される従来技術においても、スペーサの交換に際しては、車輪支持部から車輪を取外さなければならず、前述した問題と同様の難点を内在している。
【0008】
【発明の目的】
この発明は、従来の技術に係る車輪用スペーサに内在している前記問題に鑑み、これを好適に解決するべく提案されたものであって、車輪支持部から車輪を取外すことなく、交換作業を容易に行ない得る車輪用スペーサを提供することを目的とする。
【0009】
【課題を解決するための手段】
前記課題を克服し、所期の目的を達成するため、本発明に係る車輪用スペーサは、
車輪の車軸に着脱自在に外挿されて、前記車軸を回転自在に支持するすべり軸受と前記車輪との隙間に介在するスペーサにおいて、
前記スペーサは、前記車軸を挟んで開閉自在に対向する一対のスペーサ半体で構成したことを特徴とする。
【0010】
【発明の実施の形態】
次に、本発明に係る車輪用スペーサにつき、好適な実施例を挙げて以下に説明する。なお、実施例に係る車輪用スペーサは、図4および図5を参照して説明した台車に配設されるものであって、既出の部材については同じ参照符号を使用し、その詳細な説明は省略する。
【0011】
図1および図2に示すように、本実施例に係る車輪用スペーサ(以下、スペーサと云う。)20は、車軸14を挟んで対向する一対のスペーサ半体22,22を連結具30および固定具40で組み合わせて開閉自在に構成した略正方形の板状体であり、このスペーサ20の略中央には前記車軸14の挿通を許容し得る寸法の挿通孔20aが開設されている。前記各スペーサ半体22は略三角形の薄板であって、略直角をなす頂角に向かい合う底辺部(両スペーサ半体22,22の対向辺部)には、その中点を中心とした前記車軸14の半径と略同一の半円状の切欠22aが設けられている。すなわち、一対の前記スペーサ半体22,22の底辺を対向して付き合わせた際(閉成した際)に、前記切欠22a,22aにより車軸14の挿通を許容する前記挿通孔20aが形成されると共に、該底辺が対角線をなす四角形のスペーサ20が得られる。また、前記スペーサ半体22の底辺の一端部(回動端部側)は、頂角方向に切れ上がるようにテーパ22bが設けられ、一対の前記スペーサ半体22,22を付き合わせて連結した際に、前記スペーサ20の一部に遊び部分26ができるよう構成されている。この遊び部分26は、連結具30を支点にしてスペーサ半体22,22を外方に回動して切欠22a,22aを開放した際に、他端部(開放端部側)が車軸14の挿通可能な幅まで離間するのを許容するべく機能する。
【0012】
前記スペーサ半体22は、軽量で、耐摩耗性に優れた硬質合成樹脂が用いられ、例えば硬質モノマー注型ナイロン等が採用される。この硬質モノマー注型ナイロンは、主原料のナイロンモノマーを大気圧下で重合・成型することでナイロンの特性を向上させ、射出成型や押出成型品にはない優れた耐摩耗性・自己潤滑性等を発現させたものである。
【0013】
前記一対のスペーサ半体22,22を連結・固定する連結具30および固定具40としては、例えばローラチェーン用継ぎコマが用いられている(図1参照)。実施例において連結具30と固定具40とは同じものを用いているので、固定具40についてのみ説明すると共に、同一部材には同じ符号を付して示す。ここで、前記連結具30は回動端部側に配設され、前記固定具40は車軸14を挟んで対向する開放端部側に配設されるものを指し、取付けの要領は同じである。前記固定具40は、被固定物に穿設した挿通孔の一方からプレート42に立設された2本のピン42a,42aを挿入し、前記ピン42a,42aに対応する位置に通孔44a,44aが開設されたリンクプレート44で他方から挟み、該リンクプレート44から突き出たピン42a,42aの先端に継手リンク46を嵌合して抜け止めすることで、被固定物を連結するよう構成されている。
【0014】
前記一対のスペーサ半体22,22の連結は、対向した底辺がなす対角線の両端部に近接して夫々配設される連結具30および固定具40で行なわれる。前記スペーサ半体22の底辺の両端に位置する底角に近接し、かつ一対のスペーサ半体22,22を付き合わせた際に対向する位置に、貫通孔22cが夫々開設されている。すなわち、一対の前記スペーサ半体22,22の底辺を付き合わせた状態で、底辺を跨ぐように一面側から固定具40のピン42a,42aを夫々の貫通孔22c,22cに挿入し、他面側に突出するピン42a,42aに、リンクプレート44の通孔44a,44aを挿通して両面からスペーサ半体22,22を挟み込む。次いで、両ピン42a,42aの先端に継手リンク46を着脱自在に嵌合することで、ピン42a,42aが抜け止めされ、一対のスペーサ半体22,22の一端部(開放端部側)が連結固定される。そして、連結具30も同様に、スペーサ半体22の貫通孔22cを介して装着することで、一対のスペーサ半体22,22の他端部(回動端部側)を固定している。実施例に係るスペーサ20は、前記固定具40の連結を解除することで、両スペーサ半体22,22は連結具30のピンを支点として相互に開閉するよう構成される。
【0015】
なお、前記車輪12の軸端面(フランジ面)12aと、車軸支持部16の側面あるいはすべり軸受18の端面(スラスト面)16aとの対向面間の隙間に臨む車軸14に当該スペーサ20を外挿した状態で前記連結具30および固定具40は、該フランジ面12aおよびスラスト面16aに当接しないように位置設定されている。例えば、フランジ面12aに段差が設けられている車輪(図4参照)12では、フランジ面12aとスラスト面16aとの隙間が大きくなる部分に、連結具30および固定具40が位置するようになっている。
【0016】
【実施例の作用】
次に、実施例に係る車輪用スペーサの作用について説明する。先ず、車輪用スペーサの交換作業について、従来例で挙げた天井走行クレーンの台車の場合について図1〜図3を参照して説明する。前記スペーサ20を構成する対向する一対のスペーサ半体22,22の両端部を連結している連結具30および固定具40の内、テーパ22b,22bを設けていない一端部(開放端部側)を連結している固定具40を取外す(図1参照)。この状態で、スペーサ20の他端部(テーパ22b側)を連結している連結具30を支点にしてスペーサ半体22,22を夫々外方に向かって回動させ、スペーサ20の開放端を車軸14の通過を許容する寸法まで開く(図2参照)。そして、スペーサ20を、その開放端部側から車軸12のフランジ面12aと車軸支持部16あるいはすべり軸受18のスラスト面16aとの隙間に径方向から挿入する(図3(a)参照)。前記スペーサ半体22,22の切欠22a,22aが車軸14まで届いたら、両スペーサ半体22,22を夫々内方に向かって回動して、該スペーサ半体22,22の対向辺部を付き合わせる。これにより、一対の切欠22a,22aで形成される挿通孔20aに車軸14が挿通された状態で、当該スペーサ20が車軸14に外挿される。しかる後に、前記スペーサ20の開放端を固定具40で留めて、一対のスペーサ半体22,22を連結する(図3(b)参照)。また、同じ作業を車輪12の反対面についても行なうことで、一本の車輪12についてスペーサ20の取付けが完了する。
【0017】
前述したように実施例のスペーサ20は、開放した状態の一対の前記スペーサ半体22,22を前記隙間に対して径方向から挿入して、車軸12を対向する方向から挟み込んで外挿することができ、従来のスペーサのように車軸14の先端から挿通孔20aを通すことなく、スペーサ20をフランジ面12aとスラスト面16aとの隙間に配設することが可能である。従って、前記スペーサ20の交換に際して車輪12を取外す煩雑な必要はなく、交換作業を極めて簡単かつ短時間で行ない得る。また、従来の金属材料に代えて、硬質合成樹脂を用いることで、スペーサ20の軽量化が図られているから、該スペーサ20の取り扱い性が向上する。
【0018】
従来のスペーサの交換作業では、個々の車輪12について、別の大型重機を用いて9時間程の時間がかかり、従って、8個の車輪12が1セットになった天井走行クレーンにおいては、全てのスペーサ20を交換するのに合計72時間を要していた。これに対し、実施例のスペーサ20の場合は、車輪12を取外さず、かつスペーサ20が軽量であるので、1個の車輪について15分程の作業時間でスペーサ20を交換することができ、従って、8個の車輪12が1セットになった天井走行クレーンにおいては、全てのスペーサ20を交換するのに合計2時間で足り、作業時間の著しい短縮を実現し得るものである。
【0019】
前記スペーサ20を取付けた際に、車輪12のフランジ面12aや車輪支持部16あるいはすべり軸受18のスラスト面16a等との干渉を避ける位置に、前記連結具30および固定具40を配置している。すなわち、前記連結具30および固定具40がフランジ面12aやスラスト面16a等に当たって傷を与えることはない。また、前記スペーサ20の交換作業において、開放端部側の固定具40の連結または解除作業を容易に行ない得る。本実施例のスペーサ20では、一対の略三角形のスペーサ半体22,22を付き合わせた対向辺部が四角形の対角線をなすよう構成されているので、スペーサ20の大きさを有効に利用し、前記連結具30および固定具40を交換作業が容易な外方に設けることが可能である。
【0020】
本実施例に係る車輪用スペーサとして、一対の略三角形のスペーサ半体22,22を対向辺部が対角線をなすように連結具30および固定具40で連結したものについて説明したが、当該スペーサ20の外形形状や分割位置等は特に限定されない。また、前記連結具30および固定具40の種類および配置位置についても、前記スペーサ半体22,22を堅固に連結することができ、かつ連結具30および固定具40の取付作業時および取付後に、該連結具30や固定具40が他の部材と干渉しなければ特に限定されない。更に、スペーサ20を開閉する際の回動端部側に配設される連結具30については、開放端部側とは異なり、一対のスペーサ半体22,22を開閉可能に連結し得るものであれば、着脱可能とはなってなくてもよい。
【0021】
【発明の効果】
以上に説明した如く、本発明に係る車輪用スペーサによれば、車輪の車軸を挟んで一対のスペーサ半体を開閉自在に構成したから、車輪等を分解することなく、交換作業を容易に行ない得る。従って、前記スペーサの交換作業の安全性の向上、交換費用の削減および作業時間を短縮することが可能である。また、硬質合成樹脂材料からなるスペーサを用いることで、スペーサの取り扱い性が向上し、交換作業の安全性の一層の向上および作業時間をより短縮することが可能となる。
【図面の簡単な説明】
【図1】本発明の好適な実施例に係る車輪用スペーサを示す斜視図である。
【図2】実施例に係る車輪用スペーサの開放状態を示す正面図である。
【図3】実施例に係る車輪用スペーサの交換手順を示す工程図である。
【図4】従来の技術に係る車輪用スペーサが用いられる台車の一部を示す正面断面図で
ある。
【図5】従来の技術に係る車輪用スペーサが用いられる台車の一部を示す側断面図であ
る。
【図6】従来の技術に係る車輪用スペーサを示す概略斜視図である。
【符号の説明】
12 車輪,14 車軸,18 すべり軸受,20 スペーサ,20a 挿通孔
22 スペーサ半体,22a 切欠,30 連結具,40 固定具
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wheel spacer interposed in a gap between a wheel and a slide bearing supporting the wheel.
[0002]
[Prior art]
Large overhead traveling cranes and the like are configured such that carts are provided at both ends of a main body to which a lifting device is attached, and wheels mounted on the carts are supported by bearings and move freely. There are different types of bearings, such as sliding bearings and rolling bearings.In the case of overhead traveling cranes, the wheels used for bogies do not need to rotate at high speed. Certain plain bearings are commonly used. As shown in FIG. 4, the bogie is provided with a pair of wheel support portions 16, 16 which are separated from each other in the axial direction of the wheel 12, and the rail 11 or the like is provided via a slide bearing 18 provided on the wheel support portion 16. An axle 14 protruding from both shaft end surfaces of the wheel 12 placed on the track is rotatably supported. Note that a bracket 15 for positioning the axle 14 is detachably mounted on each wheel support 16 via a plurality of bolts 17 (see FIG. 5), and the bracket 15 is removed from the wheel support 16. Thus, the wheels 12 can be replaced. Lubricating oil is supplied to the sliding contact surface between the axle 14 and the sliding bearing 18 from an oil box 19 provided on the bracket 15, and the oil film formed by the lubricating oil reduces friction of the sliding contact surface, The smooth rotation of the wheel 12 is achieved.
[0003]
In the case of the overhead traveling crane, because of the structure in which the cargo is lifted between the trucks disposed at both ends of the main body, the sliding bearing 18 has not only the radial load of the axle 14 due to its own weight or the suspended load, but also An axial thrust load is applied. That is, the wheel support portion 16 moves in the axial direction, and the shaft end surface (flange surface 12a) of the wheel 12 and the opposing side surface of the wheel support portion 16 or the end surface of the slide bearing 18 (thrust surface 16a) come into sliding contact with each other. There is a possibility that it will be. Unlike the sliding bearing 18, this sliding contact surface is not supplied with lubricating oil, so that the flange surface 12a and the thrust surface 16a wear over time. Therefore, the gap between the flange surface 12a and the thrust surface 16a is adjusted with respect to the escape in the axial direction, and the flange surface 12a and the thrust surface 16a are prevented from directly slidingly contacting each other. Is interposed.
[0004]
As shown in FIG. 6, the spacer 13 is a donut-shaped disc having an insertion hole 13 a having a size that allows the axle 14 to pass therethrough, which is opened substantially at the center. A gunmetal or the like which is easy and has excellent wear resistance and corrosion resistance is used. That is, the axle 14 is inserted into the insertion hole 13a of the spacer 13, and the spacer 13 is interposed between the flange surface 12a and the thrust surface 16a, so that the flange surface 12a and the thrust surface 16a are directly connected by the thrust load. Rubbing does not occur, and damage to the wheel 12, the wheel support 16 and the slide bearing 18 is suppressed by the wear of the spacer 13 itself. Further, the spacer 13 also has a role of adjusting a gap between the flange surface 12a and the thrust surface 16a with respect to a laying tolerance of the rail 11. In some devices for supporting an axle by a slide bearing, a spacer is detachably attached to the slide bearing itself (for example, see Patent Document 1).
[0005]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2002-67950
[Problems to be solved by the invention]
The spacers 13 wear out over time and must be replaced before the spacers 13 wear out and fail. Since the spacer 13 has a donut shape, it must be attached and detached from the end of the axle 14 without fail. That is, the old spacer 13 must be removed from the tip of the axle 14, and the new spacer 13 must be attached through the insertion hole 13a from the tip of the axle 14. Therefore, when replacing the spacer 13, a complicated operation for removing the wheel 12 from the wheel support 16 is required. In addition, since it is necessary to use another large heavy machine for removing and attaching the wheel 12, it is pointed out that it takes a lot of trouble and time. Particularly, in the case of an overhead traveling crane, since the replacement of the spacer 13 is a work at a high place, the worker is forced to work in a dangerous state for a long time.
[0007]
In addition, since the replacement work of the spacer 13 is troublesome, timely replacement in accordance with the wear state of the spacer 13 cannot be performed, and secondary wear troubles such as wear of the wheel 12 and the wheel support portion 16 occur. This may occur. Further, since the spacer 13 is heavy and has poor handleability due to the use of a metal material such as gunmetal, the above-described replacement work is more difficult. In the prior art disclosed in Patent Document 1, when replacing the spacer, it is necessary to remove the wheel from the wheel supporting portion, which has the same disadvantage as the above-described problem.
[0008]
[Object of the invention]
The present invention has been proposed in order to solve the problem in view of the problem inherent in the wheel spacer according to the prior art, and it has been proposed that the replacement work be performed without removing the wheel from the wheel support portion. An object of the present invention is to provide a wheel spacer that can be easily performed.
[0009]
[Means for Solving the Problems]
In order to overcome the above problems and achieve the intended purpose, the wheel spacer according to the present invention includes:
In a spacer interposed in a clearance between the slide bearing and the wheel, which is detachably externally attached to the axle of the wheel and rotatably supports the axle,
The spacer is constituted by a pair of spacer halves opposed to each other so as to open and close with the axle interposed therebetween.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, the wheel spacer according to the present invention will be described below with reference to a preferred embodiment. The wheel spacer according to the embodiment is provided on the cart described with reference to FIGS. 4 and 5, and the same reference numerals are used for the members already described, and the detailed description thereof will be omitted. Omitted.
[0011]
As shown in FIGS. 1 and 2, a wheel spacer (hereinafter, referred to as a spacer) 20 according to the present embodiment includes a pair of spacer halves 22, 22 opposed to each other with an axle 14 interposed therebetween, and a fixing tool 30. The spacer 20 is formed in a substantially square plate-like body which can be freely opened and closed by being combined with a tool 40. An insertion hole 20a having a size that allows the axle 14 to be inserted is formed in the spacer 20. Each of the spacer halves 22 is a substantially triangular thin plate, and has a bottom portion (a side opposite to both spacer halves 22, 22) facing an apex angle that is substantially at a right angle. A semi-circular cutout 22a having substantially the same radius as the radius 14 is provided. That is, when the bottom sides of the pair of spacer halves 22, 22 are opposed to each other (when they are closed), the cutouts 22a, 22a form the insertion holes 20a that allow the axle 14 to be inserted. At the same time, a square spacer 20 whose base is diagonal is obtained. One end (rotation end side) of the bottom of the spacer half 22 is provided with a taper 22b so as to be cut in the vertex direction, and when the pair of spacer halves 22, 22 are joined together and connected. In addition, a play portion 26 is formed in a part of the spacer 20. The other end (open end side) of the play portion 26 has the other end (open end side) of the axle 14 when the notches 22a, 22a are opened by rotating the spacer halves 22, 22 outward with the connecting tool 30 as a fulcrum. It functions to allow separation to the insertable width.
[0012]
The spacer half 22 is made of a hard synthetic resin that is lightweight and has excellent wear resistance. For example, hard monomer cast nylon is used. This hard monomer cast nylon improves the properties of nylon by polymerizing and molding the main raw material nylon monomer under atmospheric pressure, and has superior wear resistance and self-lubricating properties not found in injection molded or extruded products. Is expressed.
[0013]
As the connecting tool 30 and the fixing tool 40 for connecting and fixing the pair of spacer halves 22, 22, for example, a roller chain connecting piece is used (see FIG. 1). In the embodiment, since the same connector 30 and the same fixture 40 are used, only the fixture 40 will be described, and the same members will be denoted by the same reference numerals. Here, the connecting tool 30 is disposed on the rotating end side, and the fixing tool 40 is disposed on the open end side opposite to the axle 14, and the mounting procedure is the same. . The fixture 40 inserts two pins 42a, 42a erected on the plate 42 from one of the insertion holes formed in the object to be fixed, and inserts the through holes 44a, 42a at positions corresponding to the pins 42a, 42a. The object to be fixed is connected by holding the joint link 46 at the tip of the pins 42a, 42a protruding from the link plate 44 by holding the joint link 46 between the other end by the link plate 44 provided with the opened link plate 44. ing.
[0014]
The connection of the pair of spacer halves 22, 22 is performed by a connecting tool 30 and a fixing tool 40 which are respectively disposed near both ends of a diagonal line formed by the opposed bases. Through holes 22c are respectively formed at positions near the bottom corners located at both ends of the bottom side of the spacer half 22 and opposed to each other when the pair of spacer halves 22, 22 are put together. That is, in a state where the bottom sides of the pair of spacer halves 22, 22 are put together, the pins 42a, 42a of the fixture 40 are inserted into the respective through holes 22c, 22c from one side so as to straddle the bottom sides. The through-holes 44a of the link plate 44 are inserted into the pins 42a projecting to the side, and the spacer halves 22, 22 are sandwiched from both sides. Next, the joints 46 are detachably fitted to the tips of the pins 42a, 42a, whereby the pins 42a, 42a are prevented from coming off, and one end (open end side) of the pair of spacer halves 22, 22 is connected. Connected and fixed. Similarly, the other end (rotational end side) of the pair of spacer halves 22, 22 is fixed by attaching the connecting tool 30 via the through hole 22c of the spacer half 22 similarly. In the spacer 20 according to the embodiment, by releasing the connection of the fixing tool 40, the two spacer halves 22, 22 are configured to open and close with each other using the pin of the connecting tool 30 as a fulcrum.
[0015]
The spacer 20 is externally inserted into the axle 14 facing the gap between the shaft end surface (flange surface) 12a of the wheel 12 and the side surface of the axle support portion 16 or the end surface (thrust surface) 16a of the slide bearing 18. In this state, the connecting tool 30 and the fixing tool 40 are positioned so as not to contact the flange surface 12a and the thrust surface 16a. For example, in the wheel 12 (see FIG. 4) in which a step is provided on the flange surface 12a, the connecting tool 30 and the fixing tool 40 are located at a portion where the gap between the flange surface 12a and the thrust surface 16a becomes large. ing.
[0016]
Operation of the embodiment
Next, the operation of the wheel spacer according to the embodiment will be described. First, the replacement work of the wheel spacer will be described with reference to FIGS. 1 to 3 in the case of the bogie of the overhead traveling crane described in the conventional example. One end (open end side) of the connecting tool 30 and the fixing tool 40 connecting the opposite ends of the pair of opposing spacer halves 22, 22 constituting the spacer 20 without the taper 22b, 22b. Is removed (see FIG. 1). In this state, the spacer halves 22, 22 are respectively rotated outward with the connecting member 30 connecting the other end (taper 22b side) of the spacer 20 as a fulcrum, and the open end of the spacer 20 is closed. It is opened to a size that allows the axle 14 to pass (see FIG. 2). Then, the spacer 20 is radially inserted into the gap between the flange surface 12a of the axle 12 and the thrust surface 16a of the axle support portion 16 or the slide bearing 18 from its open end side (see FIG. 3A). When the notches 22a, 22a of the spacer halves 22, 22 reach the axle 14, the two spacer halves 22, 22 are respectively turned inward, and the opposing sides of the spacer halves 22, 22 are removed. Go out with you. Thus, the spacer 20 is externally inserted into the axle 14 with the axle 14 inserted through the insertion hole 20a formed by the pair of cutouts 22a. Thereafter, the open end of the spacer 20 is fastened by the fixture 40, and the pair of spacer halves 22, 22 are connected (see FIG. 3B). Also, by performing the same operation on the opposite surface of the wheel 12, the mounting of the spacer 20 on one wheel 12 is completed.
[0017]
As described above, in the spacer 20 of the embodiment, the pair of opened spacer halves 22, 22 is inserted into the gap from the radial direction, and the axle 12 is sandwiched from the opposing direction and externally inserted. Thus, the spacer 20 can be disposed in the gap between the flange surface 12a and the thrust surface 16a without passing through the insertion hole 20a from the tip of the axle 14 unlike a conventional spacer. Therefore, it is not necessary to remove the wheel 12 when replacing the spacer 20, and the replacement operation can be performed extremely simply and in a short time. In addition, by using a hard synthetic resin instead of the conventional metal material, the weight of the spacer 20 is reduced, so that the handleability of the spacer 20 is improved.
[0018]
In the conventional spacer replacement operation, it takes about 9 hours for each wheel 12 using another large heavy machine. Therefore, in an overhead traveling crane in which eight wheels 12 are set as one set, all It took a total of 72 hours to replace the spacer 20. On the other hand, in the case of the spacer 20 of the embodiment, since the wheels 12 are not removed and the spacers 20 are lightweight, the spacers 20 can be exchanged for one wheel in about 15 minutes. Therefore, in the overhead traveling crane in which eight wheels 12 are provided as one set, it is sufficient to replace all the spacers 20 with a total of two hours, which can realize a remarkable reduction in working time.
[0019]
When the spacer 20 is attached, the connecting member 30 and the fixing member 40 are arranged at positions that avoid interference with the flange surface 12a of the wheel 12, the wheel supporting portion 16, the thrust surface 16a of the slide bearing 18, and the like. . That is, the connecting tool 30 and the fixing tool 40 do not damage the flange surface 12a or the thrust surface 16a. Further, in the replacement work of the spacer 20, the connection or release work of the fixing tool 40 on the open end side can be easily performed. In the spacer 20 of the present embodiment, the opposing sides of the pair of substantially triangular spacer halves 22, 22 are configured to form a square diagonal, so that the size of the spacer 20 is effectively used, The connecting tool 30 and the fixing tool 40 can be provided on the outside where the replacement operation is easy.
[0020]
As the wheel spacer according to the present embodiment, a pair of substantially triangular spacer halves 22, 22 connected by the connecting tool 30 and the fixing tool 40 such that opposing sides form a diagonal line has been described. There are no particular limitations on the external shape, division position, etc. In addition, the spacer halves 22, 22 can be firmly connected with respect to the types and arrangement positions of the connecting tool 30 and the fixing tool 40, and at the time of mounting work of the connecting tool 30 and the fixing tool 40 and after mounting. There is no particular limitation as long as the connecting tool 30 and the fixing tool 40 do not interfere with other members. Furthermore, unlike the open end side, the connecting member 30 disposed on the rotating end side when the spacer 20 is opened and closed can connect the pair of spacer halves 22, 22 in an openable and closable manner. If it is, it may not be detachable.
[0021]
【The invention's effect】
As described above, according to the wheel spacer according to the present invention, since the pair of spacer halves are configured to be openable and closable with the wheel axle interposed therebetween, the replacement operation can be easily performed without disassembling the wheels and the like. obtain. Therefore, it is possible to improve the safety of the replacement work of the spacer, reduce the replacement cost, and shorten the work time. Further, by using the spacer made of the hard synthetic resin material, the handleability of the spacer is improved, so that the safety of the replacement operation can be further improved and the operation time can be further shortened.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a wheel spacer according to a preferred embodiment of the present invention.
FIG. 2 is a front view showing an open state of the wheel spacer according to the embodiment.
FIG. 3 is a process diagram showing a procedure for replacing a wheel spacer according to the embodiment.
FIG. 4 is a front sectional view showing a part of a bogie using a wheel spacer according to the related art.
FIG. 5 is a side sectional view showing a part of a bogie using a conventional wheel spacer.
FIG. 6 is a schematic perspective view showing a wheel spacer according to the related art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 12 wheel, 14 axle, 18 slide bearing, 20 spacer, 20a insertion hole 22 spacer half body, 22a notch, 30 coupling tool, 40 fixing tool

Claims (5)

車輪(12)の車軸(14)に着脱自在に外挿されて、前記車軸(14)を回転自在に支持するすべり軸受(18)と前記車輪(12)との隙間に介在するスペーサ(20)において、
前記スペーサ(20)は、前記車軸(14)を挟んで開閉自在に対向する一対のスペーサ半体(22,22)で構成した
ことを特徴とする車輪用スペーサ。
A spacer (20) interposed in a clearance between the wheel (12) and a slide bearing (18) which is detachably externally attached to an axle (14) of the wheel (12) and rotatably supports the axle (14). At
The spacer for a wheel, wherein the spacer (20) is constituted by a pair of spacer halves (22, 22) opposed to each other so as to open and close with the axle (14) interposed therebetween.
前記一対のスペーサ半体(22,22)は、前記車軸(14)を挟んで対向し合う一端部において、連結具(30)を介して開閉自在に連結されている請求項1記載の車輪用スペーサ。2. The wheel according to claim 1, wherein the pair of spacer halves (22, 22) are openably and closably connected at one end facing each other across the axle (14) via a connector (30). 3. Spacer. 前記一対のスペーサ半体(22,22)は、前記連結具(30)により連結される一端部と前記車軸(14)を挟んで対向する他端部において、固定具(40)により開放不能に固定される請求項2記載の車輪用スペーサ。The pair of spacer halves (22, 22) cannot be opened by a fixing tool (40) at one end connected by the connecting tool (30) and the other end opposite to the axle (14). The wheel spacer according to claim 2, which is fixed. 前記一対のスペーサ半体(22,22)には、その閉成状態において、前記車軸(14)の挿通孔(20a)となる半円状の切欠(22a,22a)が形成されている請求項1記載の車輪用スペーサ。The semicircular notch (22a, 22a) which becomes an insertion hole (20a) of the said axle (14) in the closed state is formed in the said pair of spacer half bodies (22, 22). 2. The wheel spacer according to 1. 前記一対のスペーサ半体(22,22)は、硬質合成樹脂を材質とする請求項1記載の車輪用スペーサ。The wheel spacer according to claim 1, wherein the pair of spacer halves (22, 22) is made of a hard synthetic resin.
JP2003062364A 2003-03-07 2003-03-07 Spacer for wheel Pending JP2004270799A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003062364A JP2004270799A (en) 2003-03-07 2003-03-07 Spacer for wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003062364A JP2004270799A (en) 2003-03-07 2003-03-07 Spacer for wheel

Publications (1)

Publication Number Publication Date
JP2004270799A true JP2004270799A (en) 2004-09-30

Family

ID=33124303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003062364A Pending JP2004270799A (en) 2003-03-07 2003-03-07 Spacer for wheel

Country Status (1)

Country Link
JP (1) JP2004270799A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018059587A (en) * 2016-10-06 2018-04-12 矢崎総業株式会社 Fixing structure and electric connection box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018059587A (en) * 2016-10-06 2018-04-12 矢崎総業株式会社 Fixing structure and electric connection box

Similar Documents

Publication Publication Date Title
CN102774435B (en) Guide wheel, caterpillar drive and crawler belt is driven to connect and clamping system
EP2411264B1 (en) Track with rotating bushings for track-type vehicles
JP3155590B2 (en) A device for mounting the escalator on the drive chain
EP2411263B1 (en) Track with rotating bushings for track-type vehicles with improved sliding bearing
JP2014177888A (en) Attaching/detaching method for stationary blade ring and auxiliary support device for stationary blade segment used for the method
US20070269150A1 (en) Bearing arrangement for an axle mount of an articulated vehicle
JP2005513384A (en) Device for attaching hanging or binding means
JP2004270799A (en) Spacer for wheel
TW200528383A (en) Rotor block
JP2017001443A (en) Vehicle for maintenance and construction
CN202358839U (en) Device for adjusting walking wheel block, and bridging crane, overhead crane or gantry crane comprising same
CN104648434A (en) Axlebox comprising split housing parts, vehicle comprising at least one such axlebox and processes
CN202955201U (en) Combined type chain wheel
WO2023019861A1 (en) Track trolley
JPS6277106A (en) Roller stand having support shaft pair supported by two parallel rolling frames and connectable to drive member in single side
WO2012086250A1 (en) Track-type vehicle
JP2013049406A (en) Brake mechanism for adjustable caster
JP2021512013A (en) Connection assembly for articulated chains
CN202144179U (en) Wheel set device
CN207890529U (en) A kind of transport device of gear-box
CN218176814U (en) Stereo garage circulation chain of non-maintaining easy dismouting
US10781851B2 (en) Pivot bearing assembly having a pivot pin and having at least one bearing block and assembly method therefor
CN215321778U (en) Detachable universal wheel
CN210623424U (en) Quick-change double-pin drum brake
CN2200554Y (en) Wheel of transport handcart