JP2021071143A - Bearing structure and slide bearing replacement method - Google Patents

Bearing structure and slide bearing replacement method Download PDF

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JP2021071143A
JP2021071143A JP2019196920A JP2019196920A JP2021071143A JP 2021071143 A JP2021071143 A JP 2021071143A JP 2019196920 A JP2019196920 A JP 2019196920A JP 2019196920 A JP2019196920 A JP 2019196920A JP 2021071143 A JP2021071143 A JP 2021071143A
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slide bearing
members
insertion hole
bearing
connecting shaft
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俊明 森井
Toshiaki Mori
俊明 森井
京一 仲保
Kyoichi Nakaho
京一 仲保
竜太 吉識
Ryuta Yoshiki
竜太 吉識
真一 佐山
Shinichi Sayama
真一 佐山
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Hitachi Zosen Corp
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Hitachi Zosen Corp
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Abstract

To improve replacement work efficiency of a slide bearing.SOLUTION: A bearing structure 10 includes: a connection shaft 11 which is inserted into an insertion hole 1d of a first member 1 and insertion holes 2c of a pair of second members 2 located at both sides of the first member 1, and connects the members 1, 2 in a manner that the members 1, 2 can rotate relative to each other; cylindrical slide bearings 12 which are fitted on an outer periphery of the connection shaft 11 at the insertion holes 2c of the pair of second members 2 of the first member 1 and the pair of second members 2; and cylindrical sleeves 13, each of which is removably fitted in a space between an inner peripheral surface of the insertion hole 2c of each of the pair of second members 2 and an outer peripheral surface of the slide bearing 12 from the opposite side of the first member 1 side.SELECTED DRAWING: Figure 1

Description

本願は、軸受構造およびそれに設けられた滑り軸受の交換方法に関する。 The present application relates to a bearing structure and a method for replacing a slide bearing provided therein.

例えば特許文献１に開示の軸受構造は、第１部材（アーム）と第１部材の両側に位置する一対の第２部材（ブーム）とが相対的に回転可能に連結軸によって連結されている。そして、上記の軸受構造は、第１部材と連結軸との間に滑り軸受（ブッシュ）が装着されている。 For example, in the bearing structure disclosed in Patent Document 1, a first member (arm) and a pair of second members (booms) located on both sides of the first member are relatively rotatably connected by a connecting shaft. In the above bearing structure, a slide bearing (bush) is mounted between the first member and the connecting shaft.

特開２００３−１７６８１５号公報Japanese Unexamined Patent Publication No. 2003-176815

ところで、上述した軸受構造では、消耗品である滑り軸受（ブッシュ）を交換する際、重量が大きい連結軸を取り外す必要があるため、滑り軸受の交換作業の負担が大きくなり、交換作業効率が悪いという問題があった。 By the way, in the above-mentioned bearing structure, when replacing a consumable slide bearing (bush), it is necessary to remove a connecting shaft having a large weight, which increases the burden of the slide bearing replacement work and reduces the replacement work efficiency. There was a problem.

本願に開示の技術は、かかる事情に鑑みてなされたものであり、その目的は、滑り軸受の交換作業効率を向上させることにある。 The technique disclosed in the present application has been made in view of such circumstances, and an object thereof is to improve the efficiency of slide bearing replacement work.

本願に開示の技術は、連結軸と、滑り軸受と、スリーブとを備えている軸受構造である。前記連結軸は、第１部材の挿入孔および該第１部材の両側に位置する一対の第２部材の挿入孔に挿入され、前記両部材が相対的に回転可能に前記両部材を連結するものである。前記滑り軸受は、前記第１部材および前記一対の第２部材のうち、前記一対の第２部材の挿入孔における前記連結軸の外周に嵌め込まれた円筒状のものである。前記スリーブは、前記一対の第２部材の挿入孔の内周面と前記滑り軸受の外周面との間に、前記第１部材側とは反対側から抜き差し可能に嵌め込まれた円筒状のものである。 The technique disclosed in the present application is a bearing structure including a connecting shaft, a plain bearing, and a sleeve. The connecting shaft is inserted into an insertion hole of the first member and an insertion hole of a pair of second members located on both sides of the first member, and both members connect the two members so as to be relatively rotatable. Is. The slide bearing has a cylindrical shape fitted to the outer periphery of the connecting shaft in the insertion holes of the pair of second members among the first member and the pair of second members. The sleeve is a cylindrical one that is removably fitted between the inner peripheral surface of the insertion hole of the pair of second members and the outer peripheral surface of the slide bearing from the side opposite to the first member side. is there.

また、本願に開示の別の技術は、上記の軸受構造における滑り軸受の交換方法である。この滑り軸受の交換方法は、前記スリーブを前記第１部材側とは反対側から抜き出す工程と、前記滑り軸受を前記第１部材側とは反対側から抜き出す工程と、交換用の新たな滑り軸受を、前記第１部材側とは反対側から前記第２部材の挿入孔における前記連結軸の外周に嵌め込む工程と、前記スリーブを、前記第１部材側とは反対側から前記第２部材の挿入孔の内周面と前記新たな滑り軸受の外周面との間に嵌め込む工程とを備えている。 Another technique disclosed in the present application is a method of replacing a plain bearing in the above bearing structure. The method for replacing the slide bearing includes a step of pulling out the sleeve from the side opposite to the first member side, a step of pulling out the slide bearing from the side opposite to the first member side, and a new slide bearing for replacement. The step of fitting the sleeve into the outer periphery of the connecting shaft in the insertion hole of the second member from the side opposite to the first member side, and the sleeve of the second member from the side opposite to the first member side. It includes a step of fitting between the inner peripheral surface of the insertion hole and the outer peripheral surface of the new slide bearing.

本願の軸受構造および滑り軸受の交換方法によれば、滑り軸受の交換作業効率を向上させることができる。 According to the bearing structure and the slide bearing replacement method of the present application, the slide bearing replacement work efficiency can be improved.

図１は、実施形態に係る軸受構造の概略構成を示す断面図である。FIG. 1 is a cross-sectional view showing a schematic configuration of a bearing structure according to an embodiment. 図２は、実施形態に係る軸受構造においてエンドプレートおよびスラストワッシャを抜き出した状態を示す断面図である。FIG. 2 is a cross-sectional view showing a state in which the end plate and the thrust washer are pulled out in the bearing structure according to the embodiment. 図３は、実施形態に係る軸受構造においてスリーブを抜き出した状態を示す断面図である。FIG. 3 is a cross-sectional view showing a state in which the sleeve is pulled out in the bearing structure according to the embodiment. 図４は、実施形態に係る軸受構造において滑り軸受を抜き出した状態を示す断面図である。FIG. 4 is a cross-sectional view showing a state in which a slide bearing is extracted in the bearing structure according to the embodiment.

以下、本願の実施形態について図面を参照しながら説明する。なお、以下の実施形態は、本質的に好ましい例示であって、本願に開示の技術、その適用物、あるいはその用途の範囲を制限することを意図するものではない。 Hereinafter, embodiments of the present application will be described with reference to the drawings. It should be noted that the following embodiments are essentially preferred examples and are not intended to limit the scope of the techniques disclosed in the present application, their applications, or their uses.

本実施形態の軸受構造１０は、例えば、水中や陸上に設けられる水門設備に用いられる。図１に示すように、軸受構造１０は、連結軸１１と、滑り軸受１２と、スリーブ１３と、エンドプレート１４とを備えている。 The bearing structure 10 of the present embodiment is used, for example, in a floodgate facility provided underwater or on land. As shown in FIG. 1, the bearing structure 10 includes a connecting shaft 11, a plain bearing 12, a sleeve 13, and an end plate 14.

連結軸１１は、横断面が円形の軸である。連結軸１１は、第１部材１の挿入孔１ｄおよび該第１部材１の両側に位置する一対の第２部材２の挿入孔２ｃに挿入されている。連結軸１１は、両部材１，２が相対的に回転可能に両部材１，２を連結するものである。つまり、第１部材１と一対の第２部材２とは連結軸１１によって連結されている。 The connecting shaft 11 is a shaft having a circular cross section. The connecting shaft 11 is inserted into the insertion holes 1d of the first member 1 and the insertion holes 2c of the pair of second members 2 located on both sides of the first member 1. The connecting shaft 11 connects both members 1 and 2 so that both members 1 and 2 can rotate relatively. That is, the first member 1 and the pair of second members 2 are connected by a connecting shaft 11.

第１部材１は、主材１ａ、ダブリング１ｂおよびハブ１ｃを有している。主材１ａおよびダブリング１ｂは、環状板である。ダブリング１ｂは、主材１ａの両側面に主材１ａと同軸に設けられている。主材１ａとダブリング１ｂとは、内径が略同じである。ハブ１ｃは、円筒状に形成され、主材１ａおよびダブリング１ｂの内側に嵌め込まれている。 The first member 1 has a main material 1a, a doubling 1b, and a hub 1c. The main material 1a and the doubling 1b are annular plates. The doubling 1b is provided on both side surfaces of the main material 1a coaxially with the main material 1a. The inner diameters of the main material 1a and the doubling 1b are substantially the same. The hub 1c is formed in a cylindrical shape and is fitted inside the main material 1a and the doubling 1b.

主材１ａとダブリング１ｂとハブ１ｃとは、一体に形成されている。ハブ１ｃの内側は、連結軸１１が挿入される挿入孔１ｄとなっている。挿入孔１ｄの孔径は、連結軸１１の外径と略同じである。ハブ１ｃは、両端がダブリング１ｂよりも外方に突出している。第１部材１において、ハブ１ｃは連結軸１１を支持する部分である。 The main material 1a, the doubling 1b, and the hub 1c are integrally formed. The inside of the hub 1c is an insertion hole 1d into which the connecting shaft 11 is inserted. The hole diameter of the insertion hole 1d is substantially the same as the outer diameter of the connecting shaft 11. Both ends of the hub 1c project outward from the doubling 1b. In the first member 1, the hub 1c is a portion that supports the connecting shaft 11.

一対（２つ）の第２部材２は、連結軸１１（挿入孔１ｄ）の軸心方向において第１部材１の両側に位置している。つまり、第１部材１は、連結軸１１の軸心方向において一対の第２部材２の間に設けられている。 The pair (two) of the second members 2 are located on both sides of the first member 1 in the axial direction of the connecting shaft 11 (insertion hole 1d). That is, the first member 1 is provided between the pair of second members 2 in the axial direction of the connecting shaft 11.

第２部材２は、主材２ａおよびダブリング２ｂを有している。主材２ａおよびダブリング２ｂは、環状板である。ダブリング２ｂは、主材２ａの両側面に主材２ａと同軸に設けられている。ダブリング２ｂの内径は、主材２ａの内径よりも小さい。各第２部材２は、主材２ａとダブリング２ｂとが一体に形成されている。そして、図示しないが、一対（２つ）の第２部材２は一体に形成されている。 The second member 2 has a main material 2a and a doubling 2b. The main material 2a and the doubling 2b are annular plates. The doubling 2b is provided on both side surfaces of the main material 2a coaxially with the main material 2a. The inner diameter of the doubling 2b is smaller than the inner diameter of the main material 2a. In each second member 2, the main material 2a and the doubling 2b are integrally formed. And although not shown, a pair (two) of the second members 2 are integrally formed.

ダブリング２ｂの内側は、連結軸１１が挿入される挿入孔２ｃとなっている。挿入孔２ｃの孔径は、連結軸１１の外径よりも大きい。連結軸１１は、両端が挿入孔２ｃ（第２部材２）よりも外方に突出している。 The inside of the doubling 2b is an insertion hole 2c into which the connecting shaft 11 is inserted. The hole diameter of the insertion hole 2c is larger than the outer diameter of the connecting shaft 11. Both ends of the connecting shaft 11 project outward from the insertion hole 2c (second member 2).

滑り軸受１２は、ブッシュとも呼ばれ、円筒状に形成されている。滑り軸受１２は、第１部材１および一対の第２部材２のうち、一対の第２部材２の挿入孔２ｃにおける連結軸１１の外周に嵌め込まれている。つまり、滑り軸受１２は、２つ設けられており、挿入孔２ｃと連結軸１１との間に設けられている。 The slide bearing 12, also called a bush, is formed in a cylindrical shape. The slide bearing 12 is fitted on the outer periphery of the connecting shaft 11 in the insertion holes 2c of the pair of second members 2 of the first member 1 and the pair of second members 2. That is, two slide bearings 12 are provided, and are provided between the insertion hole 2c and the connecting shaft 11.

滑り軸受１２の内径は、連結軸１１の外径と略同じである。滑り軸受１２は、連結軸１１を回転摺動自在に支持している。滑り軸受１２の外径は、挿入孔２ｃの孔径よりも小さい。滑り軸受１２は、例えば樹脂製である。 The inner diameter of the slide bearing 12 is substantially the same as the outer diameter of the connecting shaft 11. The slide bearing 12 supports the connecting shaft 11 so as to be rotatable and slidable. The outer diameter of the slide bearing 12 is smaller than the hole diameter of the insertion hole 2c. The slide bearing 12 is made of, for example, resin.

滑り軸受１２は、両端が挿入孔２ｃ（第２部材２）よりも外方に突出している。つまり、滑り軸受１２は、第１部材１側とは反対側の端部が、対応する第２部材２の挿入孔２ｃよりも外方に突出している。 Both ends of the slide bearing 12 project outward from the insertion hole 2c (second member 2). That is, the end of the slide bearing 12 opposite to the side of the first member 1 projects outward from the insertion hole 2c of the corresponding second member 2.

スリーブ１３は、一対の第２部材２の挿入孔２ｃの内周面と滑り軸受１２の外周面との間に、第１部材１側とは反対側から抜き差し可能に嵌め込まれている。つまり、スリーブ１３は、各滑り軸受１２に対応して２つ設けられている。 The sleeve 13 is removably fitted between the inner peripheral surface of the insertion holes 2c of the pair of second members 2 and the outer peripheral surface of the slide bearing 12 from the side opposite to the first member 1 side. That is, two sleeves 13 are provided corresponding to each slide bearing 12.

スリーブ１３は、一端にフランジ１３ｂが一体形成された円筒状の基部１３ａを有している。基部１３ａは、内径が滑り軸受１２の外径と略同じであり、外径が挿入孔２ｃの孔径と略同じである。フランジ１３ｂの外径は、挿入孔２ｃの孔径よりも大きい。 The sleeve 13 has a cylindrical base portion 13a in which a flange 13b is integrally formed at one end. The inner diameter of the base portion 13a is substantially the same as the outer diameter of the slide bearing 12, and the outer diameter is substantially the same as the hole diameter of the insertion hole 2c. The outer diameter of the flange 13b is larger than the hole diameter of the insertion hole 2c.

スリーブ１３は、基部１３ａが挿入孔２ｃと滑り軸受１２との間に嵌め込まれている。より詳しくは、スリーブ１３は、フランジ１３ｂが第２部材２における第１部材１側とは反対側の側方に位置するように、挿入孔２ｃと滑り軸受１２との間に嵌め込まれている。スリーブ１３は、基部１３ａの両端が挿入孔２ｃ（第２部材２）よりも外方に突出している。スリーブ１３は、滑り軸受１２の軸心方向に亘って設けられている。 The sleeve 13 has a base portion 13a fitted between the insertion hole 2c and the slide bearing 12. More specifically, the sleeve 13 is fitted between the insertion hole 2c and the slide bearing 12 so that the flange 13b is located on the side of the second member 2 opposite to the first member 1 side. Both ends of the base portion 13a of the sleeve 13 project outward from the insertion hole 2c (second member 2). The sleeve 13 is provided along the axial direction of the slide bearing 12.

図示しないが、スリーブ１３は、フランジ１３ｂが第２部材２（ダブリング２ｂ）にボルトによって固定されている。また、図示しないが、フランジ１３ｂには、押しボルト用のねじ孔が貫通して設けられている。つまり、スリーブ１３は、押しボルトをフランジ１３ｂのねじ孔に挿入することによって、容易に挿入孔２ｃから抜き出すことが可能である。 Although not shown, the flange 13b of the sleeve 13 is bolted to the second member 2 (doubling 2b). Further, although not shown, the flange 13b is provided with a screw hole for a push bolt. That is, the sleeve 13 can be easily pulled out from the insertion hole 2c by inserting the push bolt into the screw hole of the flange 13b.

スリーブ１３は、滑り軸受１２の交換の際、挿入孔２ｃから抜き出されることによって、挿入孔２ｃと滑り軸受１２との間に所定の隙間を形成するためのものである。ここに、所定の隙間は、滑り軸受１２を容易に抜き出すために必要な空間である。 The sleeve 13 is for forming a predetermined gap between the insertion hole 2c and the slide bearing 12 by being pulled out from the insertion hole 2c when the slide bearing 12 is replaced. Here, the predetermined gap is a space required for easily pulling out the slide bearing 12.

エンドプレート１４は、連結軸１１の両端面に１つずつ設けられている。エンドプレート１４は、外径が連結軸１１の外径よりも大きく形成されており、連結軸１１がその軸心方向に抜け出るのを防止している。図示しないが、エンドプレート１４は、連結軸１１の端面にボルトによって固定されている。 One end plate 14 is provided on both end faces of the connecting shaft 11. The outer diameter of the end plate 14 is formed to be larger than the outer diameter of the connecting shaft 11, and the connecting shaft 11 is prevented from coming out in the axial direction thereof. Although not shown, the end plate 14 is bolted to the end face of the connecting shaft 11.

また、連結軸１１の外周には、エンドプレート１４と滑り軸受１２との間、滑り軸受１２と第１部材１との間のそれぞれに環状板のスラストワッシャ１５が嵌め込まれている。つまり、軸受構造１０では４つのスラストワッシャ１５が設けられている。 Further, on the outer periphery of the connecting shaft 11, an annular plate thrust washer 15 is fitted between the end plate 14 and the slide bearing 12, and between the slide bearing 12 and the first member 1. That is, the bearing structure 10 is provided with four thrust washers 15.

〈滑り軸受の交換方法〉
上述した軸受構造１０における滑り軸受１２の交換方法について、図２〜図４を参照しながら説明する。滑り軸受１２の交換は、２つの滑り軸受１２に対して１つずつ順に行われる。ここでは、片側（図２〜図４における右側）の滑り軸受１２の交換方法について説明する。 <How to replace plain bearings>
The method of replacing the slide bearing 12 in the bearing structure 10 described above will be described with reference to FIGS. 2 to 4. The slide bearings 12 are replaced one by one for each of the two slide bearings 12. Here, a method of replacing the slide bearing 12 on one side (right side in FIGS. 2 to 4) will be described.

先ず、図２に示すように、エンドプレート１４を取り外す工程が行われる。この工程では、エンドプレート１４を固定しているボルトを外して、エンドプレート１４を連結軸１１から取り外す。 First, as shown in FIG. 2, a step of removing the end plate 14 is performed. In this step, the bolt fixing the end plate 14 is removed, and the end plate 14 is removed from the connecting shaft 11.

次いで、図２に示すように、スラストワッシャ１５を抜き出す工程が行われる。この工程では、取り外したエンドプレート１４と滑り軸受１２との間に位置するスラストワッシャ１５を連結軸１１から抜き出す。つまり、連結軸１１において第１部材１側とは反対側からスラストワッシャ１５を抜き出す。 Next, as shown in FIG. 2, a step of extracting the thrust washer 15 is performed. In this step, the thrust washer 15 located between the removed end plate 14 and the slide bearing 12 is extracted from the connecting shaft 11. That is, the thrust washer 15 is pulled out from the side of the connecting shaft 11 opposite to the side of the first member 1.

次いで、図３に示すように、スリーブ１３を抜き出す工程が行われる。この工程では、挿入孔２ｃにおいてスリーブ１３を第１部材１側とは反対側から抜き出す。具体的には、フランジ１３ｂのねじ孔に押しボルトを挿入することによって、スリーブ１３を挿入孔２ｃから抜き出す。 Next, as shown in FIG. 3, a step of pulling out the sleeve 13 is performed. In this step, the sleeve 13 is pulled out from the side opposite to the first member 1 side in the insertion hole 2c. Specifically, the sleeve 13 is pulled out from the insertion hole 2c by inserting a push bolt into the screw hole of the flange 13b.

当然ながら、スリーブ１３を抜き出す方法は上記以外のものであってもよい。例えば、フランジ１３ｂのねじ孔にアイボルトを挿入し、そのアイボルトをチェーンブロック等で引っ張ってスリーブ１３を抜き出す方法がある。 As a matter of course, the method for pulling out the sleeve 13 may be other than the above. For example, there is a method of inserting an eyebolt into a screw hole of a flange 13b and pulling the eyebolt with a chain block or the like to pull out the sleeve 13.

次いで、図４に示すように、滑り軸受１２を抜き出す工程が行われる。この工程では、挿入孔２ｃにおいて滑り軸受１２を第１部材１側とは反対側から抜き出す。このとき、滑り軸受１２と挿入孔２ｃとの間には所定の隙間が形成されているため、滑り軸受１２を抜き出し易い。さらに、滑り軸受１２は、第１部材１側とは反対側の端部が挿入孔２ｃよりも外方に突出しているため、その突出部分を掴んで抜き出すことができる。そのため、容易に滑り軸受１２を抜き出すことができる。 Next, as shown in FIG. 4, a step of extracting the slide bearing 12 is performed. In this step, the slide bearing 12 is pulled out from the side opposite to the first member 1 side in the insertion hole 2c. At this time, since a predetermined gap is formed between the slide bearing 12 and the insertion hole 2c, the slide bearing 12 can be easily pulled out. Further, since the end portion of the slide bearing 12 on the side opposite to the first member 1 side protrudes outward from the insertion hole 2c, the protruding portion can be grasped and pulled out. Therefore, the slide bearing 12 can be easily pulled out.

次いで、新たな滑り軸受１２を嵌め込む工程が行われる。この工程では、交換用の新たな滑り軸受１２を、第１部材１側とは反対側から挿入孔２ｃにおける連結軸１１の外周に嵌め込む。 Next, a step of fitting a new slide bearing 12 is performed. In this step, a new replacement slide bearing 12 is fitted into the outer periphery of the connecting shaft 11 in the insertion hole 2c from the side opposite to the first member 1 side.

次いで、スリーブ１３を嵌め込む工程が行われる。この工程では、先の工程で抜き出したスリーブ１３を、第１部材１側とは反対側から挿入孔２ｃの内周面と新たな滑り軸受１２の外周面との間に嵌め込む。そして、フランジ１３ｂをボルトによって第２部材２（ダブリング２ｂ）に固定する。 Next, a step of fitting the sleeve 13 is performed. In this step, the sleeve 13 extracted in the previous step is fitted between the inner peripheral surface of the insertion hole 2c and the outer peripheral surface of the new slide bearing 12 from the side opposite to the first member 1 side. Then, the flange 13b is fixed to the second member 2 (doubling 2b) with bolts.

なお、スリーブ１３を嵌め込む方法として、例えば、フランジ１３ｂの固定用のボルトをねじ込むことによってスリーブ１３を第２部材２側に引き寄せて嵌め込む方法や、スリーブ１３のフランジ１３ｂを外側からジャッキ等で押し込んで嵌め込む方法がある。勿論、スリーブ１３の嵌め込み方法は上記以外のものであってもよい。 As a method of fitting the sleeve 13, for example, a method of pulling the sleeve 13 toward the second member 2 side by screwing a bolt for fixing the flange 13b and fitting the sleeve 13, or a method of fitting the flange 13b of the sleeve 13 from the outside with a jack or the like. There is a method of pushing it in. Of course, the method of fitting the sleeve 13 may be other than the above.

次いで、スラストワッシャ１５を嵌め込む工程が行われる。この工程では、先の工程で抜き出したスラストワッシャ１５を連結軸１１に嵌め込む。次いで、エンドプレート１４を取り付ける工程が行われる。つまり、先の工程で取り外したエンドプレート１４を連結軸１１の端面にボルトによって固定する。これにより、片側の滑り軸受１２の交換が完了する。そして、もう一つの滑り軸受１２についても同様の工程で交換が行われる。このようにして、連結軸１１を取り外すことなく容易に滑り軸受１２の交換が行われる。 Next, a step of fitting the thrust washer 15 is performed. In this step, the thrust washer 15 extracted in the previous step is fitted into the connecting shaft 11. Next, a step of attaching the end plate 14 is performed. That is, the end plate 14 removed in the previous step is fixed to the end surface of the connecting shaft 11 with bolts. This completes the replacement of the slide bearing 12 on one side. Then, the other slide bearing 12 is also replaced in the same process. In this way, the slide bearing 12 can be easily replaced without removing the connecting shaft 11.

以上のように、上記実施形態の軸受構造１０は、連結軸１１と、滑り軸受１２と、スリーブ１３とを備えている。連結軸１１は、第１部材１の挿入孔１ｄおよび該第１部材１の両側に位置する一対の第２部材２の挿入孔２ｃに挿入され、両部材１，２が相対的に回転可能に両部材１，２を連結する。滑り軸受１２は、第１部材１および一対の第２部材２のうち、一対の第２部材２の挿入孔２ｃにおける連結軸１１の外周に嵌め込まれた円筒状のものである。スリーブ１３は、一対の第２部材２の挿入孔２ｃの内周面と滑り軸受１２の外周面との間に、第１部材１とは反対側から抜き差し可能に嵌め込まれた円筒状のものである。 As described above, the bearing structure 10 of the above embodiment includes a connecting shaft 11, a slide bearing 12, and a sleeve 13. The connecting shaft 11 is inserted into the insertion holes 1d of the first member 1 and the insertion holes 2c of the pair of second members 2 located on both sides of the first member 1, so that both members 1 and 2 are relatively rotatable. Both members 1 and 2 are connected. The slide bearing 12 has a cylindrical shape fitted to the outer periphery of the connecting shaft 11 in the insertion holes 2c of the pair of second members 2 among the first member 1 and the pair of second members 2. The sleeve 13 is a cylindrical one that is removably fitted between the inner peripheral surface of the insertion holes 2c of the pair of second members 2 and the outer peripheral surface of the slide bearing 12 from the side opposite to the first member 1. is there.

上記の構成によれば、スリーブ１３を抜き出すことにより、挿入孔２ｃと滑り軸受１２との間に滑り軸受１２を抜き出すために必要な作業空間を形成することができる。そのため、連結軸１１を取り外すことなく、滑り軸受１２の抜き出しおよび嵌め込みを容易に行うことができる。したがって、滑り軸受１２の交換作業効率を向上させることができる。 According to the above configuration, by pulling out the sleeve 13, a working space required for pulling out the slide bearing 12 can be formed between the insertion hole 2c and the slide bearing 12. Therefore, the slide bearing 12 can be easily pulled out and fitted without removing the connecting shaft 11. Therefore, the replacement work efficiency of the slide bearing 12 can be improved.

また、上記実施形態の滑り軸受１２の交換方法は、スリーブ１３を第１部材１側とは反対側から抜き出す工程と、滑り軸受１２を第１部材１側とは反対側から抜き出す工程と、交換用の新たな滑り軸受１２を、第１部材１側とは反対側から第２部材２の挿入孔２ｃにおける連結軸１１の外周に嵌め込む工程と、スリーブ１３を、第１部材１側とは反対側から第２部材２の挿入孔２ｃの内周面と新たな滑り軸受１２の外周面との間に嵌め込む工程とを備えている。 Further, the method of replacing the slide bearing 12 of the above embodiment includes a step of pulling out the sleeve 13 from the side opposite to the first member 1 side and a step of pulling out the slide bearing 12 from the side opposite to the first member 1 side. The step of fitting a new slide bearing 12 for use from the side opposite to the first member 1 side to the outer periphery of the connecting shaft 11 in the insertion hole 2c of the second member 2, and the sleeve 13 from the first member 1 side. A step of fitting from the opposite side between the inner peripheral surface of the insertion hole 2c of the second member 2 and the outer peripheral surface of the new slide bearing 12 is provided.

上記の方法によれば、上述したように、連結軸１１を取り外すことなく、滑り軸受１２の抜き出しおよび嵌め込みを容易に行うことができる。したがって、滑り軸受１２の交換作業効率を向上させることができる。 According to the above method, as described above, the slide bearing 12 can be easily pulled out and fitted without removing the connecting shaft 11. Therefore, the replacement work efficiency of the slide bearing 12 can be improved.

また、上記実施形態の軸受構造１０では、滑り軸受１２は、第１部材１側とは反対側の端部が、対応する第２部材２の挿入孔２ｃよりも外方に突出している。この構成によれば、挿入孔２ｃよりも外方に突出している滑り軸受１２の端部を掴んで滑り軸受１２を抜き出すことができる。そのため、滑り軸受１２の抜き出しを一層容易に行うことができる。そのため、滑り軸受１２の交換作業効率が一層向上する。 Further, in the bearing structure 10 of the above embodiment, the end portion of the slide bearing 12 on the side opposite to the first member 1 side protrudes outward from the insertion hole 2c of the corresponding second member 2. According to this configuration, the slide bearing 12 can be pulled out by grasping the end portion of the slide bearing 12 protruding outward from the insertion hole 2c. Therefore, the slide bearing 12 can be pulled out more easily. Therefore, the replacement work efficiency of the slide bearing 12 is further improved.

なお、本願に開示の技術は、上記実施形態において以下のように構成してもよい。 The technique disclosed in the present application may be configured as follows in the above embodiment.

例えば、上記実施形態の滑り軸受１２の端部は、挿入孔２ｃから外方に突出せずに、挿入孔２ｃの端面と一致するようにしてもよい。 For example, the end portion of the slide bearing 12 of the above embodiment may be aligned with the end face of the insertion hole 2c without protruding outward from the insertion hole 2c.

また、上記実施形態のスリーブ１３は、一対の第２部材２の挿入孔２ｃの内周面と滑り軸受１２の外周面との間に、第１部材１とは反対側から抜き差し可能な形状であればよく、例えばフランジ１３ｂを有しない形状であってもよい。 Further, the sleeve 13 of the above embodiment has a shape that allows it to be inserted and removed from the side opposite to the first member 1 between the inner peripheral surface of the insertion holes 2c of the pair of second members 2 and the outer peripheral surface of the slide bearing 12. It may be a shape that does not have a flange 13b, for example.

また、上記実施形態の軸受構造１０では、図４に示すように滑り軸受１２を抜き出した後、スラストワッシャ１５（図４において第１部材１の右側に位置するスラストワッシャ１５）も抜き出すことが可能なので、そのスラストワッシャ１５も交換することができる。スラストワッシャ１５も、滑り軸受１２ほどではないが損耗する。スラストワッシャ１５の外径が、第２部材２の挿入孔２ｃの孔径（即ち、スリーブ１３の基部１３ａの外径）よりも小さければ、スラストワッシャ１５を抜き出すことが可能である。 Further, in the bearing structure 10 of the above embodiment, after the slide bearing 12 is extracted as shown in FIG. 4, the thrust washer 15 (the thrust washer 15 located on the right side of the first member 1 in FIG. 4) can also be extracted. Therefore, the thrust washer 15 can also be replaced. The thrust washer 15 also wears, though not as much as the plain bearing 12. If the outer diameter of the thrust washer 15 is smaller than the hole diameter of the insertion hole 2c of the second member 2 (that is, the outer diameter of the base portion 13a of the sleeve 13), the thrust washer 15 can be pulled out.

以上のように、本願に開示の技術は、軸受構造および滑り軸受の交換方法について有用である。 As described above, the techniques disclosed in the present application are useful for bearing structures and methods for replacing slide bearings.

１ 第１部材
１ｄ 挿入孔
２ 第２部材
２ｃ 挿入孔
１０ 軸受構造
１１ 連結軸
１２ 滑り軸受
１３ スリーブ 1 1st member 1d Insertion hole 2 2nd member 2c Insertion hole 10 Bearing structure 11 Connecting shaft 12 Plain bearing 13 Sleeve

Claims (3)

第１部材の挿入孔および該第１部材の両側に位置する一対の第２部材の挿入孔に挿入され、前記第１部材と前記第２部材の両部材が相対的に回転可能に前記両部材を連結する連結軸と、
前記第１部材および前記一対の第２部材のうち、前記一対の第２部材の挿入孔における前記連結軸の外周に嵌め込まれた円筒状の滑り軸受と、
前記一対の第２部材の挿入孔の内周面と前記滑り軸受の外周面との間に、前記第１部材側とは反対側から抜き差し可能に嵌め込まれた円筒状のスリーブとを備えている
ことを特徴とする軸受構造。 Both members are inserted into the insertion holes of the first member and the insertion holes of the pair of second members located on both sides of the first member so that both the first member and the second member can rotate relatively. With the connecting shaft that connects
Of the first member and the pair of second members, a cylindrical slide bearing fitted to the outer periphery of the connecting shaft in the insertion hole of the pair of second members.
A cylindrical sleeve is provided between the inner peripheral surface of the insertion hole of the pair of second members and the outer peripheral surface of the slide bearing so as to be removably fitted from the side opposite to the first member side. The bearing structure is characterized by that. 請求項１に記載の軸受構造において、
前記滑り軸受は、前記第１部材側とは反対側の端部が、対応する前記第２部材の挿入孔よりも外方に突出している
ことを特徴とする軸受構造。 In the bearing structure according to claim 1,
The slide bearing has a bearing structure in which an end portion on a side opposite to that of the first member protrudes outward from an insertion hole of the corresponding second member. 請求項１または２に記載の軸受構造における滑り軸受の交換方法であって、
前記スリーブを前記第１部材側とは反対側から抜き出す工程と、
前記滑り軸受を前記第１部材側とは反対側から抜き出す工程と、
交換用の新たな滑り軸受を、前記第１部材側とは反対側から前記第２部材の挿入孔における前記連結軸の外周に嵌め込む工程と、
前記スリーブを、前記第１部材側とは反対側から前記第２部材の挿入孔の内周面と前記新たな滑り軸受の外周面との間に嵌め込む工程とを備えている
ことを特徴とする滑り軸受の交換方法。 A method for replacing a slide bearing in the bearing structure according to claim 1 or 2.
The step of pulling out the sleeve from the side opposite to the first member side,
The step of pulling out the slide bearing from the side opposite to the first member side,
A step of fitting a new replacement slide bearing from the side opposite to the first member side to the outer periphery of the connecting shaft in the insertion hole of the second member.
The sleeve is provided with a step of fitting the sleeve between the inner peripheral surface of the insertion hole of the second member and the outer peripheral surface of the new slide bearing from the side opposite to the first member side. How to replace plain bearings.
JP2019196920A 2019-10-30 2019-10-30 Bearing structure and slide bearing replacement method Pending JP2021071143A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022224914A1 (en) 2021-04-20 2022-10-27 Ａｇｃ株式会社 Method for producing laminated glass for automotive windows, laminated glass for automotive windows, and automobile
WO2022234687A1 (en) * 2021-05-07 2022-11-10 株式会社東和電機製作所 Sliding bearing and fishing machine equipped with sliding bearing

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Publication number Priority date Publication date Assignee Title
JPS6164507A (en) * 1984-09-06 1986-04-02 Toyoda Gosei Co Ltd Elastic bushing
JP2003176815A (en) * 2001-12-11 2003-06-27 Komatsu Ltd Bearing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6164507A (en) * 1984-09-06 1986-04-02 Toyoda Gosei Co Ltd Elastic bushing
JP2003176815A (en) * 2001-12-11 2003-06-27 Komatsu Ltd Bearing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022224914A1 (en) 2021-04-20 2022-10-27 Ａｇｃ株式会社 Method for producing laminated glass for automotive windows, laminated glass for automotive windows, and automobile
WO2022234687A1 (en) * 2021-05-07 2022-11-10 株式会社東和電機製作所 Sliding bearing and fishing machine equipped with sliding bearing

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