KR20120010784A - Multiple Bearing - Google Patents

Multiple Bearing Download PDF

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Publication number
KR20120010784A
KR20120010784A KR1020100072342A KR20100072342A KR20120010784A KR 20120010784 A KR20120010784 A KR 20120010784A KR 1020100072342 A KR1020100072342 A KR 1020100072342A KR 20100072342 A KR20100072342 A KR 20100072342A KR 20120010784 A KR20120010784 A KR 20120010784A
Authority
KR
South Korea
Prior art keywords
bearing
outer ring
cylindrical
inner ring
ring
Prior art date
Application number
KR1020100072342A
Other languages
Korean (ko)
Inventor
나복남
Original Assignee
대양롤랜트 주식회사
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 대양롤랜트 주식회사 filed Critical 대양롤랜트 주식회사
Priority to KR1020100072342A priority Critical patent/KR20120010784A/en
Priority to PCT/KR2011/004813 priority patent/WO2012015174A2/en
Publication of KR20120010784A publication Critical patent/KR20120010784A/en

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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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/55—Systems consisting of a plurality of bearings with rolling friction with intermediate floating or independently-driven rings rotating at reduced speed or with other differential ball or roller bearings
    • 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
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F16C13/022—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle
    • 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
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/08—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with two or more rows of balls
    • 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
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/58—Conveyor systems, e.g. rollers or bearings therefor

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

The present invention relates to a multiple bearing in which a bearing replacement or repair period can be lengthened even if a bearing part of one side is damaged by connecting a plurality of bearings, and a first bearing part and a second bearing provided in parallel with the first bearing part are provided. It is made of a portion, and includes an outer ring provided radially outwardly of the first bearing portion, an inner ring provided radially inward of the second bearing portion and a connecting wheel integrally forming the inner side of the first bearing portion and the outside of the second bearing portion.
According to the multiple bearing of the present invention, by connecting a plurality of bearings, by forming the inner ring and the outer ring integrally between the bearing and the bearing, each bearing shares the rotation, other bearings that are not damaged even if some of the bearings are damaged It is possible to continue to rotate through the effect that the replacement cycle of the bearing can be long.

Description

Multiple Bearing

The present invention relates to multiple bearings, and more particularly, to multiple bearings in which a bearing replacement or maintenance period can be lengthened even when a bearing part of one side is damaged by connecting a plurality of bearings.

In general, the bearing (bearing) is used as a means for reducing the wear caused by the friction between the various mechanical parts, and to prevent the excessive transfer to the mechanical device.

In the following description, the lateral direction of FIG. 1 is referred to as the 'axial direction' and the longitudinal direction is referred to as the 'radial direction', and the direction toward the center of the shaft 12 in the axial direction is referred to as the 'axial direction inner' and The direction toward both ends is referred to as 'axially outward', the direction toward the shaft 12 in the radial direction is referred to as 'radially inward', and the direction away from the shaft 12 is referred to as 'outward in the radial direction'.

As one of the related arts in which such a bearing is used, there is a roller 10 for a conveyor, which has a stopper ring in an annular groove formed inside each shaft piece 12a on both sides of the shaft 12, as shown in FIG. 12b), the first bearing 13 and the second bearing 19 is forcibly fitted to the outside of the stopper ring 12b, but the spacer between the first bearing 13 and the second bearing 19 12c is provided to maintain a predetermined gap, and the outer end of the first bearing 13 is coupled to the end cap 14 integral with the roller tube 11.

Then, both ends of the roller tube 11 were bent inward to form an inner ring flange 11a, and an inner ring flange 11a was fitted to each other by fitting end caps 14 to the inner side of the inner ring flange 11a. ) And the joint of the outer ring flange 14b were welded from the outside to be integrated.

In addition, the center lines of the shaft 12 and the end cap 14 do not coincide with each other or are inclined to each other, thereby preventing misalignment of the first bearing 13 and the second bearing 19. To this end, the housing member 15 is further provided, and the seal portion 18a is formed in relation to the cover 18.

Therefore, in a structure in which a double row bearing is provided, such as a conventional roller 10 for a conveyor, the bearing may include a plurality of first bearings 13 and second bearings 19 and the inner ring of the first bearing 13 may be formed. The inner ring of the second bearing 19 is fixed to the state in which it is coupled to the shaft 12, the outer ring of the first bearing 13 and the second bearing 19 is coupled to the housing member 15, The outer ring of the first bearing 13 and the outer ring of the second bearing 19 rotate integrally with the housing member 15.

Therefore, if any one of the bearings is damaged and cannot be rotated, there is a problem that the roller tube 11 does not rotate with respect to the shaft 12 even if there is an undamaged bearing.

The present invention has been made to solve the above-described problems, by forming the inner ring of the one bearing portion and the outer ring of the other bearing portion integrally rotated to share the rotation of each bearing portion, even if some of the bearing portion is damaged is not damaged It is possible to continue to rotate through other bearings to provide multiple bearings that can lead to longer bearing replacement or maintenance intervals.

The multiple bearing of the present invention for achieving the above object is composed of a first bearing portion and a second bearing portion provided in parallel with the first bearing portion, the outer ring, the second bearing provided radially outward of the first bearing portion An inner ring provided in a radially inward direction of the negative portion, and a connecting wheel integrally forming an inner side of the first bearing portion and an outer side of the second bearing portion.

The connecting wheel may include a first cylindrical part serving as an inner ring of the first bearing part, a second cylindrical part serving as an outer ring of the second bearing part, and a support part connecting the first cylindrical part and the second cylindrical part.

The inner diameter surface of the first cylindrical portion is formed by a first interval higher than the inner diameter surface of the inner ring, the outer diameter surface of the second cylindrical portion is formed by a second interval lower than the outer diameter surface of the outer ring, one side of the support portion is the outer ring and the third It is formed apart by the interval, the other side may be formed by the inner ring and the fourth interval apart.

At least one of the first bearing part and the second bearing part may be a roller bearing, a ball bearing, or a sliding bearing.

The connecting wheel is composed of a first cylindrical portion provided with the inner diameter of the inner ring of the first bearing portion, a second cylindrical portion provided with the outer diameter of the outer ring of the second bearing portion, and a connecting portion connecting the first cylindrical portion and the second cylindrical portion. The inner ring of the first bearing portion may be inserted into the outer diameter of the first cylindrical portion, and the outer ring of the second bearing portion may be inserted into the inner diameter of the second cylindrical portion.

According to the multi-bearing of the present invention as described above, by forming the inner ring of the one bearing portion and the outer ring of the other bearing portion integrally rotated, each bearing portion shares the rotation, other parts that are not damaged even if some of the bearing portions are damaged It is possible to continue to rotate through the bearing portion has the effect that the replacement and maintenance cycle of the bearing can be long.

1 is a cross-sectional view of a conveyor roller shown for explaining a conventional bearing mounting structure,
2 is a cross-sectional view showing a multiple bearing according to an embodiment of the present invention,
3 is a cross-sectional view showing a connection wheel provided in the multiple bearing according to an embodiment of the present invention,
Figure 4 is a cross-sectional view showing a roller for a conveyor with multiple bearings according to an embodiment of the present invention,
FIG. 5 is a partially enlarged cross-sectional view of the conveyor roller shown in FIG. 4;
6 and 7 are cross-sectional views showing the operating state of the multiple bearing according to an embodiment of the present invention,
8 is a cross-sectional view showing another embodiment of a multiple bearing according to the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

2 is a cross-sectional view showing a multiple bearing according to an embodiment of the present invention, Figure 3 is a cross-sectional view showing a connection wheel provided in the multiple bearing according to an embodiment of the present invention.

For reference, in FIG. 2, the retainer and the seal generally provided in the bearing are omitted.

As shown in FIG. 2, the multiple bearing according to the exemplary embodiment of the present invention includes a first bearing part 150 and a second bearing part 160 provided in parallel with the first bearing part 150.

The outer ring 153 is provided radially outwardly of the first bearing part 150, and the inner ring 161 is provided radially inwardly of the second bearing part 160.

In FIG. 2, reference numeral 170 denotes a connecting wheel 170.

As shown in FIGS. 2 and 3, the connecting wheel 170 serves as an outer ring of the first cylindrical portion 151 and the second bearing portion 160 that serve as the inner ring of the first bearing portion 150. A second cylindrical portion 163, the first cylindrical portion 151 and the support portion 173 for connecting the second cylindrical portion 163 is composed of.

Therefore, the first cylindrical portion 151 is provided radially inward of the first bearing portion 150 to act as an inner ring of the first bearing portion 150, and the second cylindrical portion 163 is the second bearing portion. It is provided radially outward of the 160 to act as an outer ring of the second bearing portion 160.

A gap is radially formed between the outer ring 153 and the first cylindrical portion 151, and a first motor 155 is provided between the outer ring 153 and the first cylindrical portion 151.

A radial gap is formed between the inner ring 161 and the second cylindrical part 163, and a second electric body 165 is provided between the inner ring 161 and the second cylindrical part 163. .

Since the rolling elements 155 and 165 are ball-shaped, the outer ring 153 and the first cylindrical portion 151 and the inner ring 161 and the second cylindrical portion 163 are concave orbited in a surface facing each other. Grooves 152, 152a, 162 and 162a are formed, respectively.

Therefore, the first war between the raceway groove 152 formed in the outer diameter surface 1713 of the first cylindrical portion 151, which is a pair of raceway raceways facing each other, and the raceway groove 152a formed in the inner diameter surface of the outer ring 153, respectively. The track body 155 is located, the track groove 162 formed on the inner diameter surface 1701 of the second cylindrical portion 163, which is a pair of opposing track grooves, and the track groove formed on the outer diameter surface of the inner ring 161 ( The second motor 165 is positioned between 162a).

The inner diameter surface 1711 of the first cylindrical portion 151 is formed to be larger than the inner diameter surface of the inner ring 161 by the first interval t1, and the outer diameter surface 1754 of the second cylindrical portion 163 is the outer ring ( It is preferable to form smaller than the outer diameter surface of 153 by the second interval t2.

In addition, one side surface of the support part 173 is formed axially apart by the third interval t3 in the axial direction of the outer ring 153, and the other side surface is fourth interval t4 in the axial direction with the end of the inner ring 161. As far apart as axially formed.

Here, the first interval t1 and the second interval t2 may be equal to each other, and the third interval t3 and the fourth interval t4 may also be equal to each other.

4 is a cross-sectional view showing a roller for a conveyor with multiple bearings according to an embodiment of the present invention, FIG. 5 is a partially enlarged cross-sectional view of the roller for a conveyor shown in FIG. 4, and FIGS. 6 and 7 illustrate the present invention. Sectional view showing the operating state of the multiple bearing according to an embodiment of the.

As described above, when a multi-bearing is provided, it may be used as a means for reducing abrasion due to friction between various machine parts and preventing the transfer of force to a mechanical device. For example, a multi-bearing is used for a conveyor. The roller 100 can be mentioned.

As shown in FIG. 4, the conveyor roller 100 has a hollow cylindrical roller tube 110 penetrated to both sides, and a shaft positioned in the roller tube body 110 to form a rotation shaft core of the roller tube body 110. It consists of 120, between the roller tube 110 and the shaft 120 is provided with multiple bearings according to the present invention. And, the sealing means 130 is provided to the outer axial direction of the multiple bearing.

In FIG. 4, reference numeral 140 illustrates an end cap provided inside the roller tube 110 at both ends of the roller tube 110. The end cap 140 is a hollow hollow tube of cross section.

The end cap 140 has an inner cylindrical portion 141 extending in the axial direction on the inner diameter side, the outer diameter side is connected to the roller tube 110 by a method such as welding.

4 and 5, the outer ring 153 in the first bearing portion 150 may be installed in contact with the inner cylindrical portion 141 side of the end cap 140, the second bearing portion 160 is located axially inward from the first bearing portion 150 and the shaft 120 is in contact with the inner ring 161.

Therefore, the outer ring 153 is provided to rotate integrally with the roller tube 110, the inner ring 161 is provided to rotate integrally with the shaft 120, the connection ring 170, that is, the first bearing portion ( At 150, the first cylindrical part 151 corresponding to the inner ring and the second cylindrical part 163 corresponding to the outer ring are rotated integrally with the second bearing part 160.

In addition, a first interval t1 is formed between the inner diameter surface 1711 of the first cylindrical portion 151 and the outer diameter surface of the shaft 120, and is spaced apart from both ends of the shaft 120 in the axial direction. A stopper ring 139 is provided. The stopper ring 139 serves to axially support the multiple bearings in the axial direction.

As shown in FIGS. 4 and 5, when the roller tube 110 rotates with respect to the shaft 120 by the multiple bearings installed on the roller 100 for the conveyor, the outer ring 153 rotates. The connection wheel 170 rotates according to the rolling resistance of the body 155.

Therefore, the first bearing portion 150 and the second bearing portion 160 share the rotation.

For example, assuming that the roller tube 110 rotates at 10,000 RPM with respect to the shaft 120, the outer ring 153 rotates at 10,000 RPM, and the rolling resistance of the first motor 155 is reduced. Therefore, if the connecting wheel 170 rotates at 3,000 RPM, the first bearing portion 150 rotates at 7000 RPM, and the second bearing portion 160 rotates at 3000 RPM, thereby sharing the rotation.

Therefore, the effect of extending the life of the bearing portion occurs, the heat generated by the rotation of the bearing portion is reduced.

On the other hand, even if the damage to any one of the first bearing portion 150 and the second bearing portion 160 can not rotate because the structure of the remaining bearing portion can rotate, the conveyor roller 100 continues without replacement It becomes possible to use.

For example, even if the first bearing portion 150 is damaged while the roller tube 110 rotates, as illustrated in FIG. 6, the outer ring 153, the first motor 155, and the connecting wheel 170 are integrally formed. The rollers rotate at the same speed as the roller body 110 and continue to rotate.

Similarly, if the second bearing portion 160 is damaged while the roller tube 110 is rotated, as illustrated in FIG. 7, the outer ring 153 becomes a new outer ring and rotates at the same speed as the roller tube 110. The connection wheel 170, the second electric motor 165 and the inner ring 161 will be integrally rotated.

8 is a cross-sectional view showing another embodiment of the multiple bearing according to the present invention, at least one of the first bearing portion 150 and the second bearing portion 160 may be a roller bearing, may be a ball bearing, Although not shown, it may be a sliding bearing.

In addition, the first bearing unit 150 and the second bearing unit 160 may be formed of a bearing as in the related art, and may be provided with a separate connection wheel 170.

In FIG. 8, reference numeral 156 denotes an inner ring of the first bearing unit 150, and 166 illustrates an outer ring of the first bearing unit 160.

The connection ring 170 is a second cylindrical portion provided with the outer diameter of the outer ring of the first cylindrical portion 151 and the second bearing portion 160 provided with the inner diameter of the inner ring 156 of the first bearing portion 150. 163, a connection part 173 connecting the first cylindrical part 151 and the second cylindrical part 163 to the outer diameter of the first cylindrical part 151 of the first bearing part 150. The inner ring 156 is inserted, and the outer ring 166 of the second bearing part 160 is inserted into the inner diameter of the second cylindrical part 163.

In the above description, a preferred embodiment of the present invention has been described with an example of using a multi-bearing in a roller for a conveyor, but the present invention is not limited thereto. It can also be used as a means for preventing the transmission, and those skilled in the art to which the present invention pertains that various substitutions, modifications and changes can be made without departing from the spirit of the present invention. It will be easy to see.

150: first bearing portion 153: outer ring
160: second bearing portion 161: inner ring
170: connecting wheel

Claims (5)

A first bearing part 150;
The second bearing part 160 provided in parallel with the first bearing part 150.
Lt; / RTI >
Outer ring 153 provided radially outward of the first bearing portion 150, inner ring 161 provided radially inward of the second bearing portion 160, and inner and second portions of the first bearing portion 150. Multiple bearings including a connection wheel 170 integrally forming the outside of the bearing portion 160. The method of claim 1, wherein the connection wheel 170 is
A first cylindrical portion 151 serving as an inner ring of the first bearing portion 150;
A second cylindrical part 163 serving as an outer ring of the second bearing part 160;
Multiple bearing, characterized in that consisting of a support portion (173) connecting the first cylindrical portion (151) and the second cylindrical portion (163). The method of claim 2,
The inner diameter surface 1711 of the first cylindrical portion 171 is formed to be larger than the inner diameter surface of the inner ring 161 by a first interval t1, and the outer diameter surface 1754 of the second cylindrical portion 163 is an outer ring ( It is formed smaller than the outer diameter surface of the 153 by the second interval (t2), one side of the support portion 173 is formed by the outer ring 153 and the third interval (t3), the other side is the inner ring 161 and the first Multiple bearings characterized in that formed by four intervals (t4) apart. The method of claim 3,
At least one of the first bearing part 150 and the second bearing part 160 is a roller bearing, a ball bearing or a sliding bearing, characterized in that the sliding bearing. The method of claim 4, wherein the connecting wheel 170 is
The first cylindrical portion 151 provided with the inner diameter of the inner ring 156 of the first bearing portion 150, the second cylindrical portion 163 provided with the outer diameter of the outer ring 166 of the second bearing portion 160 and An inner ring 156 of the first bearing part 150 may be formed by a connection part 173 connecting the first cylindrical part 151 and the second cylindrical part 163 to the outer diameter of the first cylindrical part 151. Is inserted, and the outer ring 166 of the second bearing portion 160 is inserted into the inner diameter of the second cylindrical portion (163).
KR1020100072342A 2010-07-27 2010-07-27 Multiple Bearing KR20120010784A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020100072342A KR20120010784A (en) 2010-07-27 2010-07-27 Multiple Bearing
PCT/KR2011/004813 WO2012015174A2 (en) 2010-07-27 2011-06-30 Multi-bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100072342A KR20120010784A (en) 2010-07-27 2010-07-27 Multiple Bearing

Publications (1)

Publication Number Publication Date
KR20120010784A true KR20120010784A (en) 2012-02-06

Family

ID=45530564

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100072342A KR20120010784A (en) 2010-07-27 2010-07-27 Multiple Bearing

Country Status (2)

Country Link
KR (1) KR20120010784A (en)
WO (1) WO2012015174A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101978692B1 (en) * 2017-11-24 2019-05-15 엘아이지넥스원 주식회사 Bearing assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192619A (en) * 1981-05-21 1982-11-26 Suehiro Seikou Kk Complex roll bearing
JPS629727U (en) * 1985-07-04 1987-01-21
JPH0599231A (en) * 1991-10-03 1993-04-20 Fuji Elelctrochem Co Ltd Rolling bearing
JP2008082506A (en) * 2006-09-28 2008-04-10 Jtekt Corp Roll bearing and supercharger using it

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101978692B1 (en) * 2017-11-24 2019-05-15 엘아이지넥스원 주식회사 Bearing assembly

Also Published As

Publication number Publication date
WO2012015174A2 (en) 2012-02-02
WO2012015174A3 (en) 2012-03-29

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