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CN-224214568-U - Double-row serial angular contact ball bearing

CN224214568UCN 224214568 UCN224214568 UCN 224214568UCN-224214568-U

Abstract

The utility model relates to the field of bearings, and discloses a double-row serial angular contact ball bearing, which comprises an outer ring (10) and an inner ring (11), wherein two rows of rolling bodies (12) are arranged between the outer ring (10) and the inner ring (11), the outer ring (10) surrounds the outer side of the inner ring (11), flanges (101) used for being connected with a supporting unit are arranged at the end part of the outer ring (10), at least two flanges (101) are arranged, all the flanges (101) are uniformly distributed on the outer ring (10), and mounting holes (102) for bolts to pass through are formed in the flanges (101). The outer ring is provided with the flange, the flange is connected with the end face of the supporting unit through bolts, higher connection strength can be provided, and axial pretightening force is generated, so that the rotation precision of the bearing is improved, the rigidity of the bearing device is increased, the number of bearing rolling bodies in the bearing is increased, and the rationality of the load distribution in the bearing and the service life of the bearing are improved.

Inventors

  • ZHOU SHOUHU
  • Kong Chenhuan
  • REN YITAO
  • LI PING

Assignees

  • 浙江兆丰机电股份有限公司

Dates

Publication Date
20260508
Application Date
20250527

Claims (8)

  1. 1. Double-row tandem angular contact ball bearing, including outer lane (10) and inner circle (11), install rolling element (12) that are two rows between outer lane (10) and inner circle (11), outer lane (10) encircle in inner circle (11) outside, its characterized in that: The end part of the outer ring (10) is provided with flanges (101) used for being connected with the supporting unit, the number of the flanges (101) is at least two, all the flanges (101) are uniformly distributed on the outer ring (10), and the flanges (101) are provided with mounting holes (102) for bolts to pass through.
  2. 2. The double-row tandem angular contact ball bearing according to claim 1, wherein the two rows of rolling bodies (12) are respectively mounted on a first cage (13) and a second cage (14), the first cage (13) and the second cage (14) are connected with each other in a meshed manner, and a gap is arranged between the first cage (13) and the second cage (14).
  3. 3. The double-row serial angular contact ball bearing of claim 2, wherein a plurality of first rolling grooves (131) are formed in the outer end of the first retainer (13), a plurality of second rolling grooves (141) are formed in the outer end of the second retainer (14), a plurality of clamping groove parts (132) are formed in the inner end of the first retainer (13), protruding parts (142) equal to the clamping groove parts (132) in number are formed in the inner end of the second retainer (14), and the first retainer (13) is connected with the protruding parts (142) of the second retainer (14) in a clamping mode through the clamping groove parts (132).
  4. 4. The double-row serial angular contact ball bearing according to claim 1, wherein the outer ring (10) is provided with a first outer channel (103) and a second outer channel (104), one row of rolling bodies (12) is arranged on the first outer channel (103), the other row of rolling bodies (12) is arranged on the second outer channel (104), both sides of the first outer channel (103) are provided with first outer shoulders (105), and the outer side of the second outer channel (104) is provided with second outer shoulders (106).
  5. 5. The double row tandem angular contact ball bearing according to claim 4, wherein an outer oil groove (107) for storing lubricating oil is provided between the first outer channel (103) and the second outer channel (104).
  6. 6. The double-row serial angular contact ball bearing according to claim 1, wherein the inner ring (11) is provided with a first inner channel (111) and a second inner channel (112), one row of rolling bodies is arranged on the first inner channel (111), the other row of rolling bodies (12) is arranged on the second inner channel (112), a first inner retaining shoulder (113) is arranged on the outer side of the first inner channel (111), and a second inner retaining shoulder (114) is arranged on the inner side of the second inner channel (112).
  7. 7. The double row tandem angular contact ball bearing according to claim 6, wherein an inner oil groove (115) for storing lubricating oil is provided between the first inner channel (111) and the second inner channel (112).
  8. 8. The double row tandem angular contact ball bearing according to any one of claims 1 to 7, wherein the contact angle α1 of the first row of rolling elements (12) is the same as the contact angle α2 of the second row of rolling elements (12).

Description

Double-row serial angular contact ball bearing Technical Field The utility model relates to the field of bearings, in particular to a double-row serial angular contact ball bearing. Background Tapered roller bearings are commonly used in situations where the bearing is required to carry a large radial load as well as a large unidirectional axial load. The tapered roller bearing has larger bearing capacity and can meet the use requirement of the application scene. However, the tapered roller bearing has the following defects that the rollers are in line contact with the roller path, the friction resistance of the line contact is high, and higher friction, higher heating and higher vibration are caused, so that the energy consumption, the speed and the efficiency of the bearing in operation are affected. The angular contact ball bearing can effectively solve the defects of the tapered roller bearing, the steel balls of the angular contact ball bearing are in point contact with the roller path, friction resistance is obviously reduced, friction loss, heating and vibration can be effectively reduced, the energy consumption efficiency and the speed stability of bearing operation are improved, and the energy-saving and noise-reducing performance requirements are met. However, the single-row angular contact ball bearing has limited bearing capacity, and cannot meet the use requirement when facing a large combined load, so that the bearing capacity of the single-row angular contact ball bearing needs to be enhanced by adopting a double-row serial connection mode. The outer ring of the traditional double-row serial angular contact ball bearing is assembled with a supporting unit through interference fit, for example, a double-row serial angular contact ball bearing with the publication number of CN 114135571A is provided, the bearing capacity is improved through a double-row angular contact structure, and the lubricating effect is improved through an oil groove design, but the structure lacks an axial pretightening force adjusting mechanism, so that the problems of unstable axial play, axial movement of the bearing and the like can be caused, the movement precision of the bearing is reduced, and the running performance of the bearing is influenced. Particularly, under the working condition of high-precision transmission scenes or large load fluctuation, the traditional structure is difficult to ensure stable axial positioning precision, and the application expansion of the structure in the field of high-end equipment or new energy is limited. Therefore, a novel bearing scheme capable of not only retaining the advantages of low friction and high flexibility of the double-row serial angular contact ball bearing, but also realizing accurate control of axial pretightening force through structural innovation is needed. Disclosure of utility model The utility model provides a double-row serial angular contact ball bearing aiming at the defects in the prior art. In order to solve the technical problems, the utility model is solved by the following technical scheme: The double-row serial angular contact ball bearing comprises an outer ring and an inner ring, wherein rolling bodies in two rows are arranged between the outer ring and the inner ring, the outer ring surrounds the outer side of the inner ring, flanges used for being connected with a supporting unit are arranged at the end part of the outer ring, the number of the flanges is at least two, all the flanges are uniformly distributed on the outer ring, and mounting holes for bolts to pass through are formed in the flanges. Preferably, the two rows of rolling elements are respectively mounted on a first cage and a second cage, the first cage and the second cage are engaged with each other, and a gap is provided between the first cage and the second cage. Preferably, the outer end of the first retainer is provided with a plurality of first rolling grooves, the outer end of the second retainer is provided with a plurality of second rolling grooves, the inner end of the first retainer is provided with a plurality of clamping groove parts, the inner end of the second retainer is provided with protruding parts with the same number as the clamping groove parts, and the first retainer is connected with the protruding parts of the second retainer in a clamping way through the clamping groove parts. Preferably, the outer ring is provided with a first outer channel and a second outer channel, one row of rolling bodies are arranged on the first outer channel, the other row of rolling bodies are arranged on the second outer channel, both sides of the first outer channel are provided with first outer shoulders, and the outer side of the second outer channel is provided with second outer shoulders. Preferably, an external oil groove for storing lubricating oil is provided between the first external channel and the second external channel. Preferably, the inner ring is provided with