WO2024250167A1 - Roulement à rouleaux à alignement automatique fendu - Google Patents

Roulement à rouleaux à alignement automatique fendu Download PDF

Info

Publication number
WO2024250167A1
WO2024250167A1 PCT/CN2023/098533 CN2023098533W WO2024250167A1 WO 2024250167 A1 WO2024250167 A1 WO 2024250167A1 CN 2023098533 W CN2023098533 W CN 2023098533W WO 2024250167 A1 WO2024250167 A1 WO 2024250167A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
inner ring
roller bearing
locking ring
spherical roller
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
PCT/CN2023/098533
Other languages
English (en)
Chinese (zh)
Inventor
程涛
刘际轩
贺思传
王为华
夏厚桥
霍华
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to PCT/CN2023/098533 priority Critical patent/WO2024250167A1/fr
Priority to CN202380096687.0A priority patent/CN121039409A/zh
Publication of WO2024250167A1 publication Critical patent/WO2024250167A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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
    • F16C19/36—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 a single row of rollers

Definitions

  • the present disclosure relates to the technical field of bearings, and in particular to a split-type spherical roller bearing.
  • Spherical roller bearings mainly bear radial loads, and can also bear axial loads in any direction.
  • Spherical roller bearings have high radial load capacity and are suitable for working under heavy loads or vibration loads. They have good aligning performance and can compensate for coaxiality errors.
  • Spherical roller bearings include integral spherical roller bearings and split spherical roller bearings. Replacing integral spherical roller bearings usually requires additional high-cost work, including disassembling gears or couplings, disassembling drives, or disassembling shaft transmission systems. Therefore, split spherical roller bearings are usually used to replace integral spherical roller bearings, which reduces the downtime of machines and factories, and in many cases can save production costs and assembly costs.
  • the split spherical roller bearings need to be cut, and considering the space reserved for the bolt parts connecting the split structure during the installation process, the size, number and pitch circle of the rolling elements of the split spherical roller bearings will be affected, and their load-bearing capacity is often significantly lower than that of the integral spherical roller bearings.
  • the present disclosure provides a split-type spherical roller bearing.
  • the present disclosure provides a split spherical roller bearing, comprising: an outer ring; an inner ring, the inner ring having an axial width equal to that of the outer ring, the inner ring comprising a first inner ring and a second inner ring which are circumferentially split; a retainer, radially located between the inner ring and the outer ring, the retainer comprising a cross beam portion and a clamping portion, the cross beam portion forming a pocket, the clamping portion being located axially outside the cross beam portion and extending toward the inner ring; A rolling body, located in the pocket of the retaining frame; and a locking ring, located on the axial outside of the rolling body, for circumferentially locking the first inner ring and the second inner ring, wherein the locking ring is located on the radial inside of the clamping portion of the retaining frame and overlaps with the clamping portion in the axial direction.
  • the axial outer side of the rolling body includes a first abutment surface; the axial inner side of the locking ring includes a second abutment surface, wherein the second abutment surface matches the first abutment surface, and the first abutment surface and the second abutment surface are planes or arcuate surfaces.
  • the retaining frame further includes a connecting portion, which is located axially inward of the cross beam portion and is used to connect the cross beam portion, wherein a radial thickness of the connecting portion is greater than a thickness of the cross beam portion.
  • FIG2 is a cross-sectional view of a split spherical roller bearing according to an exemplary embodiment
  • FIG5 is a cross-sectional view of a split spherical roller bearing according to another exemplary embodiment
  • axial direction A, radial direction R and circumferential direction W refer to axial direction A, radial direction R and circumferential direction W of the split spherical roller bearing respectively;
  • the axial outer side refers to the side away from the symmetry axis H in Figure 2 in the axial direction A (for example, the right side in Figure 3), and the axial inner side refers to the side close to the symmetry axis H in Figure 2 in the axial direction A (for example, the left side in Figure 3);
  • the radial outer side refers to the side away from the central axis O in Figure 2 in the radial direction R (the upper side in Figure 2), and the radial inner side refers to the side close to the central axis O in the radial direction R (the lower side in Figure 2).
  • transmission connection means that the driving force/torque can be transmitted between two components, and the two components can be directly connected or through various transmission mechanisms or connection structures to achieve the above function.
  • torque-resistant connection means that torque can be transmitted between two components, and the methods for achieving the torque-resistant connection can include interference fit and bolt connection, etc.
  • the width of the inner ring 10 is much wider than that of the inner ring 10 of the standard integral spherical roller bearing, so that the replacement of the integral spherical roller bearing cannot be met or completed without changing the surrounding structure.
  • the split spherical roller bearing of this structure is difficult to meet customer expectations.
  • the present invention provides a split spherical roller bearing 100 , as shown in FIGS. 2 to 5 , the split spherical roller bearing 100 may include an outer ring 10 , an inner ring 20 , a retaining frame 30 , rolling elements 40 and a locking ring 50 .
  • the split outer ring 10, inner ring 20, retainer 30 and locking ring 50 make the split spherical roller bearing 100 divided into two identical parts. Without disassembling other structures around the integral spherical roller bearing, the split spherical roller bearing 100 has the same appearance as the original integral spherical roller bearing, that is, the axial width of the inner ring 20 is equal to that of the outer ring 10, which improves the problem of the split spherical roller bearing in the related art that the inner ring needs to be widened, resulting in a different appearance size from the integral spherical roller bearing and cannot be simply and directly replaced.
  • the width of the inner ring 20 along the axial direction A is equal to that of the outer ring 10.
  • the retainer 30 is located between the inner ring 20 and the outer ring 10 along the radial direction R.
  • the retainer 30 includes a through hole extending along the axial direction.
  • the beam portions 33 are used to guide and separate the plurality of rolling elements 40 in the circumferential direction W.
  • the beam portions 33 are spaced apart in the circumferential direction to form pockets 35 , and the rolling elements 40 are located in the pockets 35 between the beam portions 33 .
  • first locking ring 51 or the second locking ring 52 is located axially outside each row of rolling elements 40 and is used to circumferentially lock the first inner ring 21 and the second inner ring 22 .
  • the first locking ring 51 and the second locking ring 52 are located between the inner ring 20 and the outer ring 10 along the radial direction R, and the axial outer sides of the first locking ring 51 and the second locking ring 52 can be shorter than or flush with the axial outer sides of the first inner ring 21 and the second outer ring 12 respectively.
  • the first locking ring 51 and the second locking ring 52 are respectively located on the radial inner sides of the clamping parts 34 of the first retaining frame 31 and the second retaining frame 32, and overlap with the clamping parts 34 in the axial direction A, that is, the locking ring 50 and the clamping parts 34 of the retaining frame 30 are stacked in the radial direction R.
  • the second abutting surface 53 may be parallel to the first abutting surface 41.
  • the first abutting surface 41 and the second abutting surface 53 may be convex arcuate surfaces and concave arcuate surfaces that match each other.
  • the space in the axial direction A is fully utilized, so that the axial clearance between the locking ring 50 and the rolling element 40 is reduced, and the locking ring 50 and the rolling element 40 are arranged more compactly in the axial direction A. While ensuring the load-bearing capacity of the split spherical roller bearing 100, there is no need to increase the size of the split spherical roller bearing 100.
  • the cross beam portion 33 is located radially outside the pitch circle of the rolling body 40 , where the pitch circle of the rolling body 40 refers to a circle formed by the center of the rolling body.
  • the gap between the rolling elements can be reduced as much as possible, thereby increasing the number of rolling elements 40.
  • the number of rolling elements 40 can be increased in the circumferential direction W.
  • the split spherical roller bearing 100 of this structure increases the overall load-bearing capacity.
  • the engaging portion 34 can be elastically deformed in the axial direction
  • the hook 36 can be a hook-shaped structure bent toward the radial outside, or a wedge-shaped structure gradually enlarged toward the radial outside
  • the engaging groove 42 It can be a circular groove located on the first abutting surface 41 of the rolling body 40.
  • the hook 36 can slide relative to the inner wall of the circular groove 42 to prevent the hook 36 from detaching from the groove 42.
  • the clamping method of the hook 36 and the groove 42 makes the pre-installation of the rolling body 40 and the retaining frame 30 simpler and more convenient.
  • the split spherical roller bearing 100 is divided into two identical parts. As shown in FIG4 , the split spherical roller bearing 100 is axially divided into the same upper and lower parts, and both the upper and lower parts have two rows of rolling elements 40.
  • the retainer 30 of the upper part can be a split retainer, that is, each row of rolling elements 40 has an independent first retainer 31, and the axial inner sides of the two rows of first retainers 31 abut against each other.
  • the retainer 30 of the lower part can also be a split retainer, that is, each row of rolling elements 40 has an independent second retainer 32, and the axial inner sides of the two rows of second retainers 32 abut against each other.
  • a gap is set between the crossbeam portion 33 of the split retaining frame 30 and the raceway of the outer ring 10 , and the radial inner side of the clamping portion 34 of the retaining frame 30 is used to abut against the radial outer side of the locking ring 50 , so that the retaining frame 30 is guided by the locking ring 50 .
  • the connecting portion 38 can space the two rows of rolling elements 40 in the axial direction, and the connecting portion 38 located on the axial inner side of the rolling element 40 and the clamping portion 34 located on the axial outer side of the rolling element 40 jointly limit the axial movement of the rolling element 40. Furthermore, the thickness of the connecting portion 38 along the radial direction R can be greater than the thickness of the cross beam portion 33. The main purpose is to better control the yaw angle of the rolling element 40 when the split spherical roller bearing 100 is running.
  • the retaining frame 30 can be a structure in which the outer ring 10 raceway is guided, that is, the connecting portion 38 maintains a smaller radial clearance with the raceway of the outer ring 10, while the inner diameter of the retaining frame 30 (the clamping portion 34) needs to maintain a larger clearance with the locking ring 50.
  • the integrated retainer 30 is guided by the outer ring 10 through the connecting portion 38, and the split retainer 30 is guided by the locking ring 50 through the clamping portion 34.
  • the above embodiments are only exemplary and are not intended to limit the protection scope of the present disclosure.
  • the split retainer 30 may also be guided by the outer ring 10, and the integrated retainer 30 may also be guided by the locking ring 50 through the clamping portion 34.
  • the end of the first locking ring 51 may be provided with a radial R-recessed mounting notch 37, a first hole (not shown in the figure) is provided at the mounting notch 37, and a second hole (not shown in the figure) is provided at the end of the second locking ring 52.
  • the fastener 60 (such as a bolt or a screw) can be screwed into the second hole through the first hole of the mounting notch 37 to achieve a fixed connection between the first locking ring 51 and the second locking ring 52.
  • annular groove 23 may also be provided on the radial outer side of the inner ring 20, and the annular groove 23 prevents the locking ring 50 from moving axially, thereby preventing the locking ring 50 from axially falling off and causing the first inner ring 21 and the second inner ring 22 to scatter.
  • the locking ring 50 is inserted into the annular groove 23 by interference fit, and the locking ring 50 circumferentially covers the end face contact points of the first inner ring 21 and the second inner ring 22. In this way, a quick locking connection between the first inner ring 21 and the second inner ring 22 can be achieved without using fasteners such as bolts or screws, thereby saving installation steps and time.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un roulement à rouleaux à alignement automatique fendu (100), comprenant : une bague externe (10) ; une bague interne (20), la largeur de la bague interne (20) dans une direction axiale (A) étant égale à celle de la bague externe (10), et la bague interne (20) comprenant une première bague interne (21) et une seconde bague interne (22) qui sont fendues dans une direction circonférentielle (W) ; un élément de retenue (30), qui est situé entre la bague interne (20) et la bague externe (10) dans une direction radiale (R), le dispositif de retenue (30) comprenant une partie pont (33) et une partie d'encliquetage (34), la partie d'encliquetage (34) étant située sur le côté externe de la partie pont (33) dans la direction axiale (A) et s'étendant vers la bague interne (20) ; un élément de roulement (40), qui est situé dans un trou de poche (35) du dispositif de retenue (30) ; et une bague de verrouillage (50), qui est située sur le côté externe de l'élément de roulement (40) dans la direction axiale (A) et est configurée pour verrouiller la première bague interne (21) et la seconde bague interne (22) dans la direction circonférentielle (W), la bague de verrouillage (50) étant située sur le côté interne de la partie d'encliquetage (34) du dispositif de retenue (30) dans la direction radiale (R) et étant chevauchée par la partie d'encliquetage (34) dans la direction axiale (A). Au moyen de l'empilement de la bague de verrouillage (50) et du dispositif de retenue (30) dans la direction radiale (R), le roulement à rouleaux à alignement automatique intégré (100) peut être remplacé sans changer d'autres structures environnantes, ce qui permet d'assurer la longueur axiale d'origine et la capacité de support de l'élément de roulement (40).
PCT/CN2023/098533 2023-06-06 2023-06-06 Roulement à rouleaux à alignement automatique fendu Pending WO2024250167A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2023/098533 WO2024250167A1 (fr) 2023-06-06 2023-06-06 Roulement à rouleaux à alignement automatique fendu
CN202380096687.0A CN121039409A (zh) 2023-06-06 2023-06-06 分体式调心滚子轴承

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/098533 WO2024250167A1 (fr) 2023-06-06 2023-06-06 Roulement à rouleaux à alignement automatique fendu

Publications (1)

Publication Number Publication Date
WO2024250167A1 true WO2024250167A1 (fr) 2024-12-12

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ID=93794881

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/098533 Pending WO2024250167A1 (fr) 2023-06-06 2023-06-06 Roulement à rouleaux à alignement automatique fendu

Country Status (2)

Country Link
CN (1) CN121039409A (fr)
WO (1) WO2024250167A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120426320A (zh) * 2025-07-08 2025-08-05 瓦房店光阳轴承股份有限公司 一种具备自适应防护的振动筛调心滚子轴承

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH375182A (fr) * 1961-02-23 1964-02-15 Toyo Bearing Mfg Co Palier à double rangée de rouleaux
US5630669A (en) * 1994-07-12 1997-05-20 Craft Bearing Company, Inc. Split bearing, cage for split or non-split bearing and method of cutting a member of a split bearing
JP2002235754A (ja) * 2001-02-09 2002-08-23 Ntn Corp 二つ割り軸受
JP2004346971A (ja) * 2003-05-20 2004-12-09 Nsk Ltd 転がり軸受及び転がり軸受の組立て方法
CN210769830U (zh) * 2019-10-11 2020-06-16 无锡延浦轴承制造有限公司 调心滚子轴承
CN211778528U (zh) * 2020-03-16 2020-10-27 瓦房店冶金轴承集团有限公司 新型剖分式轴承
JP2022053876A (ja) * 2020-09-25 2022-04-06 Ntn株式会社 自動調心ころ軸受

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH375182A (fr) * 1961-02-23 1964-02-15 Toyo Bearing Mfg Co Palier à double rangée de rouleaux
US5630669A (en) * 1994-07-12 1997-05-20 Craft Bearing Company, Inc. Split bearing, cage for split or non-split bearing and method of cutting a member of a split bearing
JP2002235754A (ja) * 2001-02-09 2002-08-23 Ntn Corp 二つ割り軸受
JP2004346971A (ja) * 2003-05-20 2004-12-09 Nsk Ltd 転がり軸受及び転がり軸受の組立て方法
CN210769830U (zh) * 2019-10-11 2020-06-16 无锡延浦轴承制造有限公司 调心滚子轴承
CN211778528U (zh) * 2020-03-16 2020-10-27 瓦房店冶金轴承集团有限公司 新型剖分式轴承
JP2022053876A (ja) * 2020-09-25 2022-04-06 Ntn株式会社 自動調心ころ軸受

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120426320A (zh) * 2025-07-08 2025-08-05 瓦房店光阳轴承股份有限公司 一种具备自适应防护的振动筛调心滚子轴承

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