JPH08105438A - Combined roller type swing bearing - Google Patents
Combined roller type swing bearingInfo
- Publication number
- JPH08105438A JPH08105438A JP27418094A JP27418094A JPH08105438A JP H08105438 A JPH08105438 A JP H08105438A JP 27418094 A JP27418094 A JP 27418094A JP 27418094 A JP27418094 A JP 27418094A JP H08105438 A JPH08105438 A JP H08105438A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- outer ring
- bearing
- raceway
- pair
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
- F16C19/381—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with at least one row for radial load in combination with at least one row for axial load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/10—Application independent of particular apparatuses related to size
- F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、各種クレーン、その
他の建設機械、工作機械、運搬機械等に使用される複合
ころ形式旋回軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compound roller type slewing bearing used in various cranes, other construction machines, machine tools, transport machines and the like.
【０００２】[0002]
【従来の技術】旋回軸受は、ターンテーブル軸受等とも
呼ばれ、各種の形式のものが使用されている。このう
ち、スラスト荷重およびラジアル荷重の両方を受けるよ
うにした複合ころ形式の旋回軸受として、図４に示す３
列円筒ころ形式のものがある。これは、内輪４１の中央
鍔４１ａと外輪４２の一対の対向鍔４２ａ，４２ｂとの
間に、スラスト荷重負荷用の円筒ころ４３，４４を設
け、中央鍔４１ａと外輪４２の内周の軌道面４２ｃとの
間にラジアル荷重負荷用の円筒ころ４５を設けたもので
ある。外輪４２は、前記軌道面４２ｃの下端において軸
方向と垂直な合わせ面４２ｄで分割してあり、その一対
の分割外輪部分４２Ａ，４２Ｂはボルト４６でターンテ
ーブル等の取付面構成部材４７に締付け固定することに
より、一体に締結する。2. Description of the Related Art Slewing bearings are also called turntable bearings and are of various types. Of these, as a compound roller type slewing bearing that receives both the thrust load and the radial load, as shown in FIG.
There is a row cylindrical roller type. Cylindrical rollers 43 and 44 for thrust load loading are provided between the central flange 41a of the inner ring 41 and the pair of opposing flanges 42a and 42b of the outer ring 42. A cylindrical roller 45 for loading a radial load is provided between it and 42c. The outer ring 42 is divided at the lower end of the raceway surface 42c by a mating surface 42d that is perpendicular to the axial direction, and the pair of divided outer ring portions 42A and 42B are fixed by bolts 46 to a mounting surface component 47 such as a turntable. By doing so, they are integrally fastened.
【０００３】[0003]
【発明が解決しようとする課題】しかし、前記構成で
は、軸受に過大な荷重が負荷し、取付面構成部材４７の
剛性不足とボルト４６の締結不足が重なった場合など
に、外輪４２の合わせ面４２ｄの一部にわずかな隙間が
生じ、グリースが滲み出して周囲を汚損することがあ
る。また、上記隙間から軸受内部に水や塵埃が侵入し、
軸受内部の発錆やフレーキングが発生して軸受寿命を低
下させることがある。However, in the above configuration, when the bearing is subjected to an excessive load and the rigidity of the mounting surface constituting member 47 and the fastening of the bolt 46 are insufficient, the mating surface of the outer ring 42 is overlapped. A slight gap may be formed in a part of 42d, and grease may exude and stain the surroundings. In addition, water and dust enter the bearing through the gap,
Rust and flaking may occur inside the bearing and shorten the bearing life.
【０００４】この発明の目的は、軌道輪の合わせ面から
のグリースの滲み出しによる軸受外部の汚損や、軸受内
部への水，塵埃の侵入による軌道面の発錆、フレーキン
グを防止できる、複合ころ形式旋回軸受を提供すること
である。The object of the present invention is to prevent the contamination of the outside of the bearing due to the seepage of grease from the mating surfaces of the bearing rings and the rusting and flaking of the raceways due to the ingress of water and dust into the bearing. A roller type slewing bearing is provided.
【０００５】[0005]
【課題を解決するための手段】この発明の軸受は、内外
２つの軌道輪を有し、次の基本構成とした複合ころ形式
旋回軸受に適用する。一方の軌道輪の他方の軌道輪と対
向する周面に中央鍔を設け、この中央鍔の軸方向両側に
各々位置する一対の対向鍔を前記他方の軌道輪に設け
る。中央鍔と両側の対向鍔との間にスラスト荷重を受け
る円筒ころを各々介在させ、中央鍔と前記他方の軌道輪
の周面からなる軌道面との間にラジアル荷重を受ける円
筒ころを設ける。前記他方の軌道輪は、前記軌道面の端
部で軸方向と略垂直な合わせ面で分割し、その一対の軌
道輪分割体をボルトで締結する。この軸受は、上記基本
構成において、前記一対の軌道輪分割体の合わせ面に弾
性体からなるシール部材を介在させたものである。この
シール部材を配置する位置は、前記合わせ面における前
記軌道面と反対の径方向端の付近とする。シール部材に
はリング状または帯状のもの等を用いる。The bearing of the present invention is applied to a compound roller type slewing bearing having two inner and outer races and having the following basic structure. A central flange is provided on a peripheral surface of one of the bearing rings facing the other bearing ring, and a pair of opposing flanges respectively located on both axial sides of the central collar is provided on the other bearing ring. Cylindrical rollers that receive a thrust load are respectively interposed between the central flange and the opposite flanges on both sides, and cylindrical rollers that receive a radial load are provided between the central flange and the raceway surface that is the peripheral surface of the other raceway ring. The other raceway ring is divided at the end of the raceway surface at a mating surface substantially perpendicular to the axial direction, and the pair of raceway ring divided bodies are fastened with bolts. In this bearing, in the above basic configuration, a seal member made of an elastic body is interposed between the mating surfaces of the pair of raceway ring divided bodies. The position where the seal member is arranged is near the radial end of the mating surface opposite to the raceway surface. A ring-shaped or band-shaped member is used as the seal member.
【０００６】[0006]
【作用】この構成によると、軌道輪分割体の合わせ面に
弾性体からなるシール部材が介在するため、合わせ面の
隙間からグリースが軸受外部に滲み出したり、水，塵埃
等が軸受内部に侵入するのを防止でき、軸受外部の汚損
や軸受内部の各軌道面等の発錆、フレーキングを防止で
きる。シール部材を配置する位置は、合わせ面における
前記軌道面と反対の径方向端の付近としてあるため、合
わせ面間に侵入しようとする水や塵埃を入口付近で阻止
することができて侵入防止効果が高く、合わせ面の発錆
も防止できる。According to this structure, since the seal member made of an elastic material is present on the mating surface of the race ring split body, grease seeps out of the bearing from the gap between the mating surfaces, and water, dust, etc. enter the inside of the bearing. It is possible to prevent stains on the outside of the bearing, and to prevent rusting and flaking of the raceway surfaces inside the bearing. Since the position of the seal member is near the radial end of the mating surface opposite to the raceway surface, it is possible to prevent water and dust from entering between the mating surfaces near the inlet, thus preventing the intrusion. It is high and can prevent rusting of mating surfaces
【０００７】[0007]
【実施例】この発明の一実施例を図１に基づいて説明す
る。この複合ころ形式旋回軸受は、軌道輪である内輪１
と外輪２とを有し、次の基本構成とされている。内輪１
の外輪２と対向する周面である外周面には、軸方向の中
央に中央鍔１ａが設けられている。外輪２の内周面には
中央鍔１ａの軸方向両側に各々位置する上下一対の対向
鍔２ａ，２ｂが設けられている。中央鍔１ａと両側の対
向鍔２ａ，２ｂとの間には、保持器６，７で保持された
スラスト荷重負担用の円筒ころ３，４が各々介在させて
ある。また、中央鍔１ａとこれに対向する外輪２の内周
面部分である軌道面２ｃとの間には、ラジアル荷重を受
ける円筒ころ５が介在させてある。軌道面２ｃは、外輪
２の内周面に設けた円周溝２ｆの底面からなり、前記円
周溝２ｆは、ころ５よりも若干広い溝幅としてある。こ
ろ５は、円周溝２ｆの全周に並べて収容されて総ころ軸
受を構成する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIG. This compound roller type slewing bearing has an inner ring 1 which is a bearing ring.
And an outer ring 2, and has the following basic configuration. Inner ring 1
On the outer peripheral surface, which is the peripheral surface facing the outer ring 2, the central collar 1a is provided at the center in the axial direction. On the inner peripheral surface of the outer ring 2, a pair of upper and lower facing flanges 2a and 2b respectively located on both axial sides of the central flange 1a are provided. Cylindrical rollers 3 and 4 for bearing the thrust load held by cages 6 and 7 are interposed between the central flange 1a and the opposite flanges 2a and 2b on both sides. Further, a cylindrical roller 5 that receives a radial load is interposed between the central collar 1a and the raceway surface 2c that is an inner peripheral surface portion of the outer ring 2 that faces the central collar 1a. The raceway surface 2c is a bottom surface of a circumferential groove 2f provided on the inner circumferential surface of the outer ring 2, and the circumferential groove 2f has a groove width slightly wider than that of the roller 5. The rollers 5 are arranged side by side along the entire circumference of the circumferential groove 2f to form a full roller bearing.
【０００８】外輪２は、前記軌道面２ｃの下端部におい
て軸方向と略垂直な合わせ面２ｄで上下一対の外輪分割
体２Ａ，２Ｂに分割され、その両外輪分割体はボルト８
で取付面構成部材９の取付面９ａに締付け固定すること
により一体に締結されている。取付面構成部材９はター
ンテーブル等からなる。上側の外輪分割体２Ａの合わせ
面２ｄの外周縁は下向きに突出するソケット部２ｄ１と
し、対応する下側の外輪分割体２Ｂの合わせ面２ｄの外
周縁は前記ソケット部２ｄ１に嵌合する肩部２ｄ２とし
てあり、これらソケット部２ｄ１と肩部２ｄ２の印籠結
合により、両外輪分割体２Ａ，２Ｂが相互に径方向に位
置決めされる。各円筒ころ３，４，５が介在する内輪１
の外周面と外輪２の内周面とで囲まれる軌道空間の上端
は、外輪２の対向鍔２ａの内周面に沿って設けたリング
状のシール１０を内輪１の上端面に摺接させることによ
り塞がれており、前記軌道空間の下端は、内輪１の外周
面に沿って設けたリング状のシール１１を外輪２の下端
面に摺接させることにより塞がれている。各シール１
０，１１はゴム等の弾性体からなる。The outer ring 2 is divided into a pair of upper and lower outer ring divided bodies 2A and 2B by a mating surface 2d which is substantially perpendicular to the axial direction at the lower end portion of the raceway surface 2c.
Are integrally fastened to the mounting surface forming member 9 by tightening and fixing them to the mounting surface 9a of the mounting surface constituting member 9. The mounting surface constituting member 9 is composed of a turntable or the like. The outer peripheral edge of the mating surface 2d of the upper outer ring divided body 2A is a socket portion 2d 1 projecting downward, and the outer peripheral edge of the corresponding mating surface 2d of the lower outer ring divided body 2B is fitted to the socket portion 2d 1 . There the shoulder 2d 2, the spigot coupling of the socket portion 2d 1 and the shoulder 2d 2, Ryogairin divided body 2A, 2B are positioned radially from each other. Inner ring 1 in which each cylindrical roller 3, 4, 5 is interposed
At the upper end of the track space surrounded by the outer peripheral surface of the outer ring 2 and the inner peripheral surface of the outer ring 2, a ring-shaped seal 10 provided along the inner peripheral surface of the facing flange 2a of the outer ring 2 is slidably contacted with the upper end surface of the inner ring 1. The lower end of the track space is closed by sliding a ring-shaped seal 11 provided along the outer peripheral surface of the inner ring 1 onto the lower end surface of the outer ring 2. Each seal 1
0 and 11 are made of elastic material such as rubber.
【０００９】この基本構成の旋回軸受において、一対の
外輪分割体２Ａ，２Ｂの合わせ面２ｄにリング状のシー
ル部材１２が介在させてある。このシール部材１２は、
Ｏリング等のゴムまたは合成樹脂等の弾性体からなり、
上側の外輪分割体２Ａの合わせ面２ｄに形成したリング
状のシール取付溝２ｅ内に取付けられる。このシール取
付溝２ｅは、前記ソケット部２ｄ１に隣接して形成して
あり、したがってシール部材１２の位置は、合わせ面２
ｄにおけるラジアル負荷用軌道面２ｃと反対の径方向端
の付近となっている。なお、シール部材１２は、帯状の
弾性体としてもよく、その場合はシール取付溝２ｅに沿
って丸めて嵌め込む。In the slewing bearing of this basic structure, a ring-shaped seal member 12 is interposed between the mating surfaces 2d of the pair of outer ring divided bodies 2A and 2B. This seal member 12 is
Made of rubber such as O-ring or elastic material such as synthetic resin,
It is mounted in a ring-shaped seal mounting groove 2e formed in the mating surface 2d of the upper outer ring divided body 2A. The seal attachment groove 2e is Yes and formed adjacent to said socket portion 2d 1, therefore the position of the seal member 12, the mating surface 2
It is near the radial end opposite to the radial load raceway surface 2c at d. Note that the seal member 12 may be a band-shaped elastic body, and in that case, the seal member 12 is rolled and fitted along the seal mounting groove 2e.
【００１０】この構成によると、軸受に過大な荷重が負
荷し、取付面構成部材９における取付面９ａの剛性不足
とボルト８の締付不足とが重なったりして外輪２の合わ
せ面２ｄの一部に隙間が生じた場合にも、シール部材１
２の介在によって隙間が塞がれる。そのため、軸受内部
のグリースが合わせ面２ｄの隙間から軸受外部に滲み出
すのを防止でき、軸受外部がグリースで汚損するのを防
止できる。また、前記シール部材１２により、軸受外部
から合わせ面２ｄの隙間を経て軸受内部に水や摩耗粉等
の塵埃が侵入することも防止され、これらの異物の侵入
によって軸受内部の軌道面に発錆、フレーキングが生じ
るのを防止できる。しかも、シール部材１２は外輪２の
外周付近に位置しているため、合わせ面２ｄへの水や塵
埃の侵入を入口付近で阻止できて、合わせ面２ｄの発錆
が防止でき、またボルト８の配置の邪魔とならない。シ
ール材１２のシール取付溝２ｅはソケット部２ｄ１に続
いて設けるため、加工も容易である。According to this structure, an excessive load is applied to the bearing, and the rigidity of the mounting surface 9a of the mounting surface constituting member 9 and the insufficient tightening of the bolt 8 are overlapped with each other, resulting in one of the mating surfaces 2d of the outer ring 2. Even if there is a gap in the portion, the seal member 1
The interposition of 2 closes the gap. Therefore, the grease inside the bearing can be prevented from seeping out of the bearing through the gap between the mating surfaces 2d, and the outside of the bearing can be prevented from being contaminated with the grease. Further, the seal member 12 also prevents dust such as water and abrasion powder from entering the inside of the bearing from the outside of the bearing through the gap of the mating surface 2d, and the entry of these foreign substances causes rusting of the raceway surface inside the bearing. It is possible to prevent flaking. Moreover, since the seal member 12 is located near the outer periphery of the outer ring 2, it is possible to prevent water and dust from entering the mating surface 2d near the inlet, prevent rusting of the mating surface 2d, and prevent the bolt 8 from It does not interfere with the placement. Seal mounting groove 2e of the sealing material 12 for providing Following socket portion 2d 1, machining is also easy.
【００１１】なお、上記実施例では外輪２を構成する上
下一対の外輪分割体２Ａ，２Ｂを上側の外輪分割体２Ａ
のソケット部２ｄ２で印籠結合させた構成の場合を示し
たが、図２のように、下側の外輪分割体２Ｂの合わせ面
２ｄにおける内周縁に、前記軌道面２ｃのある外輪内面
部に嵌合するソケット部２ｄ３を設けて印籠結合させて
もよい。さらに、両外輪分割体２Ａ，２Ｂの合わせ面２
ｄを共に平坦面としても良い。In the above embodiment, the pair of upper and lower outer ring divided bodies 2A and 2B constituting the outer ring 2 is the upper outer ring divided body 2A.
Although the case of the structure in which the socket portion 2d 2 of FIG. 2 is coupled with the seal is shown, as shown in FIG. 2, the inner surface of the outer ring having the raceway surface 2c is formed on the inner peripheral edge of the mating surface 2d of the lower outer ring divided body 2B. It is also possible to provide a socket portion 2d 3 to be fitted and to join the cage together. Furthermore, the mating surface 2 of the two outer ring divided bodies 2A and 2B
Both d may be flat surfaces.
【００１２】図３は他の実施例を示す。この例は内輪２
１をターンテーブルからなる取付面構成部材２９に取付
けて使用する軸受に適用したものである。この例では外
輪２２の内輪２１と対向する周面である内周面に中央鍔
２２ａが設けられ、内輪２１の外周面に前記中央鍔２２
ａの軸方向両側に各々位置する一対の対向鍔２１ａ，２
１ｂが設けられる。中央鍔２２ａと両側の対向鍔２１
ａ，２１ｂとの間には保持器２６，２７で保持されるス
ラスト荷重負担用の円筒ころ２３，２４が、前記中央鍔
２２ａと内輪２１の外周面との間に保持器３３で保持さ
れるラジアル荷重負担用の円筒ころ２５がそれぞれれ介
在させてある。この場合、内輪２１がその外周の軌道面
２１ｃの下端において、軸方向と略垂直な合わせ面２１
ｄで上下一対の内輪分割体２１Ａ，２１Ｂに分割されて
おり、両内輪分割体２１Ａ，２１Ｂはボルト２８によっ
て取付面構成部材２９の取付面２９ａに締め付けられて
一体に締結される。その合わせ面２１ｄの内径端の付近
には弾性体からなるシール部材３２が介在させてある。
シール部材３２は、下側の内輪分割体２１Ｂの合わせ面
２１ｄにリング状に形成したシール取付溝２１ｅに取付
けられる。両内輪分割体２１Ａ，２１Ｂは、この例で
も、下側の内輪分割体２１Ｂの合わせ面２１ｄの内周縁
に形成したソケット部２１ｄ１と、上側の分割内輪部分
２１Ａの合わせ面２１ｄの内周縁に形成した肩部２１ｄ
２とを嵌合させる印籠結合によって結合される。円筒こ
ろ２３、２４、２５が介在する内外両輪２１，２２の軌
道空間の上端は、内輪２１の上側対向鍔２１ａの外周面
に沿って設けたリング状のシール３０を外輪２２の上端
面に摺接させることにより塞がれ、前記軌道空間の下端
は、外輪２２の内周面に沿って設けたリング状のシール
３１を内輪２１の下端面に摺接させることにより塞がれ
る。FIG. 3 shows another embodiment. This example is inner ring 2
1 is applied to a bearing that is used by being attached to a mounting surface constituting member 29 composed of a turntable. In this example, a central flange 22a is provided on the inner peripheral surface of the outer ring 22 facing the inner ring 21, and the central flange 22a is provided on the outer peripheral surface of the inner ring 21.
A pair of opposing flanges 21a, 2 located on both axial sides of a.
1b is provided. Central flange 22a and opposing flanges 21 on both sides
Cylindrical rollers 23 and 24 for bearing the thrust load, which are held by cages 26 and 27, are held between a and 21b by a cage 33 between the central flange 22a and the outer peripheral surface of the inner ring 21. Cylindrical rollers 25 for bearing the radial load are respectively interposed. In this case, the inner ring 21 has a mating surface 21 that is substantially perpendicular to the axial direction at the lower end of the outer raceway surface 21c.
It is divided into a pair of upper and lower inner ring divided bodies 21A and 21B at d, and both inner ring divided bodies 21A and 21B are fastened to the attachment surface 29a of the attachment surface constituting member 29 by bolts 28 and integrally fastened. A sealing member 32 made of an elastic body is interposed near the inner diameter end of the mating surface 21d.
The seal member 32 is attached to a seal attachment groove 21e formed in a ring shape on the mating surface 21d of the lower inner ring divided body 21B. Both the inner ring divided body 21A, 21B, even in this example, the socket portion 21d 1 formed in the inner periphery of the mating surface 21d of the lower side of the inner ring divided body 21B, the inner peripheral edge of the mating surface 21d of the upper split inner ring portion 21A Formed shoulder 21d
The two are joined by an inro joint that fits together. At the upper ends of the race spaces of the inner and outer wheels 21, 22 in which the cylindrical rollers 23, 24, 25 intervene, a ring-shaped seal 30 provided along the outer peripheral surface of the upper facing flange 21a of the inner ring 21 slides on the upper end surface of the outer ring 22. The lower end of the track space is closed by sliding a ring-shaped seal 31 provided along the inner peripheral surface of the outer ring 22 onto the lower end surface of the inner ring 21.
【００１３】この構成の場合にも、両分割内輪部分２１
Ａ，２１Ｂの合わせ面２１ｄに介在させたシール部材３
２によって、軸受内部から合わせ面２１ｄの隙間を経て
軸受内周側にグリースがしみ出すのを防止でき、また軸
受内周側から軸受内部に水、塵埃等が侵入するのを防止
できる。Also in the case of this construction, both split inner ring portions 21
Seal member 3 interposed on the mating surface 21d of A and 21B
By means of 2, it is possible to prevent grease from seeping out from the inside of the bearing to the inner peripheral side of the bearing through the gap of the mating surface 21d, and to prevent water, dust, etc. from entering the inside of the bearing from the inner peripheral side of the bearing.
【００１４】[0014]
【発明の効果】この発明の複合ころ形式旋回軸受は、ボ
ルトで締結した一対の軌道輪分割体の合わせ面に、弾性
体からなるリング状のシール部材を介在させたため、合
わせ面の隙間からグリースが軸受外部に滲み出したり、
水、塵埃等の異物が軸受内部に侵入するのを防止でき、
軸受外部の汚損や、軸受内部の軌道面の発錆，フレーキ
ングを防止できる。また、シール部材を介在させる位置
は、前記合わせ面における前記軌道面と反対の径方向端
の付近としてあるため、前記の水、塵埃等の異物の侵入
防止効果が高い。In the compound roller type slewing bearing of the present invention, the ring-shaped sealing member made of an elastic body is interposed between the mating surfaces of the pair of race ring divided bodies which are fastened with the bolts, so that the grease is applied from the gap between the mating surfaces. May seep out of the bearing,
It is possible to prevent foreign matter such as water and dust from entering the bearing,
It is possible to prevent stains on the outside of the bearing, rusting of the raceway inside the bearing, and flaking. Further, since the position where the seal member is interposed is near the radial end of the mating surface opposite to the raceway surface, the effect of preventing foreign matter such as water and dust from entering is high.
【図面の簡単な説明】[Brief description of drawings]
【図１】この発明の一実施例にかかる複合ころ形式旋回
軸受の部分断面図である。FIG. 1 is a partial cross-sectional view of a compound roller type slewing bearing according to an embodiment of the present invention.
【図２】同旋回軸受の変形例の部分断面図である。FIG. 2 is a partial cross-sectional view of a modified example of the slewing bearing.
【図３】同旋回軸受の他の実施例の部分断面図である。FIG. 3 is a partial cross-sectional view of another embodiment of the slewing bearing.
【図４】従来例の部分断面図である。FIG. 4 is a partial sectional view of a conventional example.
【符号の説明】 １，２１…内輪（軌道輪）、１ａ，２２ａ…中央鍔、２
…外輪（軌道輪）、２Ａ，２Ｂ…外輪分割体（軌道輪分
割体）、２ａ，２ｂ，２１ａ，２１ｂ…対向鍔、２ｄ，
２１ｄ…合わせ面、３，４，５，２３，２４，２５…円
筒ころ、１２，３２…シール部材、２１Ａ，２１Ｂ…内
輪分割体（軌道輪分割体）[Explanation of Codes] 1,21 ... Inner ring (race ring), 1a, 22a ... Central collar, 2
Outer ring (race ring), 2A, 2B ... Outer ring divided body (race ring divided body), 2a, 2b, 21a, 21b ... Opposite flange, 2d,
21d ... Mating surface, 3, 4, 5, 23, 24, 25 ... Cylindrical roller, 12, 32 ... Seal member, 21A, 21B ... Inner ring divided body (race ring divided body)
Claims (1)
の他方の軌道輪と対向する周面に中央鍔を設け、この中
央鍔の軸方向両側に各々位置する一対の対向鍔を前記他
方の軌道輪に設け、前記中央鍔と両側の対向鍔との間に
スラスト荷重を受ける円筒ころを各々介在させ、前記中
央鍔と前記他方の軌道輪の周面からなる軌道面の間にラ
ジアル荷重を受ける円筒ころを設け、前記他方の軌道輪
は、前記軌道面の端部付近で軸方向と略垂直な合わせ面
によって分割し、かつその一対の軌道輪分割体をボルト
で締結した複合ころ形式旋回軸受において、前記一対の
軌道輪分割体の前記合わせ面間に、弾性体からなるシー
ル部材を介在させ、このシール部材は、前記合わせ面に
おける前記軌道面と反対の径方向端の付近に配置した複
合ころ形式旋回軸受。1. An inner and outer raceway ring, wherein a central flange is provided on a peripheral surface of one raceway opposite to the other raceway ring, and a pair of opposed flanges respectively located on both axial sides of the central collar are provided. Cylindrical rollers that receive thrust load are provided between the central flange and the opposing flanges on both sides, respectively, and are provided on the other race, and between the central flange and the raceway surface that is the circumferential surface of the other race. A cylindrical roller that receives a radial load is provided, the other race is divided by a mating surface that is substantially perpendicular to the axial direction near the end of the race, and a pair of races are fastened with bolts. In the roller type slewing bearing, a seal member made of an elastic body is interposed between the mating surfaces of the pair of raceway ring divided bodies, and the seal member is near a radial end of the mating surface opposite to the raceway surface. Roller type slewing bearings .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27418094A JPH08105438A (en) | 1994-09-30 | 1994-09-30 | Combined roller type swing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27418094A JPH08105438A (en) | 1994-09-30 | 1994-09-30 | Combined roller type swing bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08105438A true JPH08105438A (en) | 1996-04-23 |
Family
ID=17538160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27418094A Pending JPH08105438A (en) | 1994-09-30 | 1994-09-30 | Combined roller type swing bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08105438A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008050747A1 (en) * | 2006-10-26 | 2008-05-02 | Tsudakoma Kogyo Kabushikikaisha | Angle indexing device for machine tool |
| JP2008279582A (en) * | 2007-05-14 | 2008-11-20 | Tsudakoma Corp | Angle index device for machine tool |
| JP2010508471A (en) * | 2006-10-31 | 2010-03-18 | アイエムオー ホールディング ジーエムビーエイチ | Rolling bearing device |
| JP2014514511A (en) * | 2011-04-05 | 2014-06-19 | テュッセンクルップ ローテ エルデ ゲーエムベーハー | Oil lubricated anti-friction bearing |
| CN114776713A (en) * | 2022-04-08 | 2022-07-22 | 洛阳轴承研究所有限公司 | Shield machine main bearing, shield machine main bearing outer ring and machining method thereof |
| CN114857168A (en) * | 2022-05-11 | 2022-08-05 | 中铁工程装备集团有限公司 | Main bearing of heading machine |
-
1994
- 1994-09-30 JP JP27418094A patent/JPH08105438A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008050747A1 (en) * | 2006-10-26 | 2008-05-02 | Tsudakoma Kogyo Kabushikikaisha | Angle indexing device for machine tool |
| JP5201681B2 (en) * | 2006-10-26 | 2013-06-05 | 津田駒工業株式会社 | Angle indexing device for machine tools |
| JP2010508471A (en) * | 2006-10-31 | 2010-03-18 | アイエムオー ホールディング ジーエムビーエイチ | Rolling bearing device |
| JP2008279582A (en) * | 2007-05-14 | 2008-11-20 | Tsudakoma Corp | Angle index device for machine tool |
| WO2008143055A1 (en) * | 2007-05-14 | 2008-11-27 | Tsudakoma Kogyo Kabushikikaisha | Angular indexing device for machine tool |
| JP2014514511A (en) * | 2011-04-05 | 2014-06-19 | テュッセンクルップ ローテ エルデ ゲーエムベーハー | Oil lubricated anti-friction bearing |
| CN114776713A (en) * | 2022-04-08 | 2022-07-22 | 洛阳轴承研究所有限公司 | Shield machine main bearing, shield machine main bearing outer ring and machining method thereof |
| CN114857168A (en) * | 2022-05-11 | 2022-08-05 | 中铁工程装备集团有限公司 | Main bearing of heading machine |
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| A02 | Decision of refusal |
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