CN213929154U

CN213929154U - Low-temperature-resistant low-torque bearing

Info

Publication number: CN213929154U
Application number: CN202022406949.5U
Authority: CN
Inventors: 石永其; 张国强; 晏伟平
Original assignee: Zhejiang Bairun Bearing Co ltd
Current assignee: Zhejiang Bairun Bearing Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-08-10
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a low temperature resistant low moment of torsion bearing relates to the bearing field, including outer lane and inner circle, the inner circle is located the inboard of outer lane, first recess has been seted up at the inner wall middle part of outer lane, the second recess has been seted up at the lateral wall middle part of inner circle, be provided with a plurality of bobbles that are the distribution of annular array between outer lane and the inner circle. The utility model discloses a be provided with first recess on the outer lane, the contact surface of first recess and bobble is the tank bottom of first recess, circle including and be provided with the second recess, the second recess is the both sides of second recess with the contact surface of bobble, make have less area of contact and frictional resistance between bobble and outer lane and the inner circle, be provided with a plurality of balls on the holder, the setting up of ball has reduced the bobble and has kept the frictional force between the ware, can effectively reduce the moment of torsion of bobble, make the inner circle rotatory smooth, can strengthen the wearability of inner circle simultaneously, the extension bearing life.

Description

Low-temperature-resistant low-torque bearing

Technical Field

The utility model relates to a bearing field, in particular to low temperature resistant low moment of torsion bearing.

Background

A common bearing structure includes an outer race, an inner race, balls, and a cage. A plurality of small balls are respectively arranged on the retainer and positioned between the outer ring and the inner ring, and steel balls are generally adopted. The inner surface of the outer ring and the outer surface of the inner ring are designed with annular grooves, the cross section of each annular groove is arc-shaped, the diameter of each annular groove is matched with that of each small ball, and two ends of each small ball are respectively embedded in the annular grooves on the inner surface of the outer ring and the outer surface of the inner ring. Because the steel ball contacts with the outer ring and the inner ring by arc surfaces and the weight of the steel ball is heavier, the friction force between the steel ball and the outer ring and the inner ring is larger, and lubricating grease needs to be packaged in the bearing for lubrication. However, the lubricating grease is in a semi-solid state, the lubricating effect is limited, and the problem of large friction force between the steel ball and the inner ring and the outer ring cannot be fundamentally solved, so that the torque of the steel ball is large, the rotation of the inner ring is not smooth, and the occasions such as a scooter and the like which require low torque and high rotation smoothness of the bearing cannot be met. Therefore, it is necessary to develop a low temperature resistant low torque bearing to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low temperature resistant low moment of torsion bearing to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a low-temperature-resistant low-torque bearing comprises an outer ring and an inner ring, wherein the inner ring is positioned on the inner side of the outer ring, a first groove is formed in the middle of the inner wall of the outer ring, a second groove is formed in the middle of the outer side wall of the inner ring, a plurality of small balls distributed in an annular array are arranged between the outer ring and the inner ring, two ends of each small ball are respectively positioned in the first groove and the second groove, a retainer is sleeved on the outer side of each small ball and fixedly mounted on the inner wall of the outer ring, baffle plates are fixedly connected to two ends of the inner wall of the outer ring, matching grooves matched with the baffle plates are formed in two ends of the outer side of the inner ring, one ends of the baffle plates are inserted into the matching grooves, a sealing plate is connected to the outer side of each baffle plate in an attaching manner, one end of the sealing plate is fixedly connected with the baffle plates through locking screws, the sealing plate is arranged in an annular structure, and a sliding sealing ring is bonded to the inner side of the other end of the sealing plate, the sliding seal ring is attached to the side wall of the inner ring.

Preferably, the baffle is provided with a plurality of, and a plurality of baffles are in annular array distribution.

Preferably, the first groove is of a V-shaped structure, the bottom of the first groove is of an arc-shaped structure, and one end of the small ball is attached to the bottom of the first groove.

Preferably, the second groove is of a three-section arc structure, and the other end of the small ball is attached to the inner walls of the two sides of the second groove.

Preferably, the retainer comprises two fixing plates fixed on the inner wall of the outer ring, the two fixing plates are fixedly connected through an annular plate, and the annular plate is sleeved on the outer side of the small ball.

Preferably, a plurality of ball grooves distributed in an annular array are formed in the inner wall of the annular plate, balls are arranged in the ball grooves, and the balls are attached to the small balls.

The utility model discloses a technological effect and advantage:

the utility model discloses a be provided with first recess on the outer lane, the contact surface of first recess and bobble is the tank bottom of first recess, circle including and be provided with the second recess, the second recess is the both sides of second recess with the contact surface of bobble, make have less area of contact and frictional resistance between bobble and outer lane and the inner circle, be provided with a plurality of balls on the holder, the setting up of ball has reduced the bobble and has kept the frictional force between the ware, can effectively reduce the moment of torsion of bobble, make the inner circle rotatory smooth, can strengthen the wearability of inner circle simultaneously, the extension bearing life.

Drawings

Fig. 1 is a schematic sectional view of the overall structure of the present invention.

Fig. 2 is a schematic side view of the overall structure of the present invention.

Fig. 3 is a schematic top view of the retainer structure of the present invention.

In the figure: 1. an outer ring; 2. an inner ring; 3. a first groove; 4. a second groove; 5. a pellet; 6. a holder; 7. a baffle plate; 8. a mating groove; 9. a sealing plate; 10. sliding the seal ring; 11. a fixing plate; 12. an annular plate; 13. a ball groove; 14. and a ball.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a low temperature resistant low torque bearing as shown in figures 1-3, as shown in figures 1 and 2, comprising an outer ring 1 and an inner ring 2, wherein the inner ring 2 is positioned at the inner side of the outer ring 1, a first groove 3 is arranged at the middle part of the inner wall of the outer ring 1, the first groove 3 is arranged in a V-shaped structure, the groove bottom of the first groove 3 is arranged in an arc structure, a second groove 4 is arranged at the middle part of the outer side wall of the inner ring 2, the second groove 4 is arranged in a three-section arc structure, a plurality of small balls 5 distributed in an annular array are arranged between the outer ring 1 and the inner ring 2, two ends of the small balls 5 are respectively positioned in the first groove 3 and the second groove 4, one end of the small ball 5 is connected with the groove bottom of the first groove 3 in an attaching manner, the other end of the small ball 5 is connected with the inner walls at two sides of the second groove 4 in, can effectively reduce the torque of the small ball 5, make the inner ring 2 rotate smoothly, can strengthen the wearability of the inner ring 2 at the same time, prolong the service life of the bearing, the outside of the small ball 5 is sleeved with the retainer 6, the retainer 6 is fixedly installed on the inner wall of the outer ring 1, both ends of the inner wall of the outer ring 1 are fixedly connected with the baffle 7, the baffle 7 is provided with a plurality of baffles, the plurality of baffles 7 are distributed in an annular array, both ends of the outside of the inner ring 2 are provided with the matching grooves 8 matched with the baffle 7, one end of the baffle 7 is inserted into the matching grooves 8, the stability of the rotation of the inner ring 2 is improved by the matching of the plurality of baffles 7 and the matching grooves 8, the outside of the baffle 7 is jointed and connected with the sealing plate 9, one end of the sealing plate 9 is fixedly connected with the baffle 7 through the locking screw, the sealing plate 9 is provided with an annular structure, the sliding sealing ring 10 is bonded on the inner side wall of the sealing plate 9, the sliding sealing ring 10 is jointed and connected with the side wall of the inner ring 2, the sealing plate 9 is matched with the sliding sealing ring 10 on the sealing plate to play a sealing role, so that external dust is prevented from entering the inside of the bearing, and the service life of the bearing is prolonged.

As shown in fig. 3, the retainer 6 includes two fixing plates 11 fixed on the inner wall of the outer ring 1, the two fixing plates 11 are fixedly connected through an annular plate 12, the annular plate 12 is sleeved on the outer side of the pellet 5, a plurality of ball grooves 13 distributed in an annular array are formed in the inner wall of the annular plate 12, balls 14 are arranged in the ball grooves 13, the balls 14 are attached to the pellet 5, the balls 14 are arranged to reduce the friction between the pellet 5 and the retainer 6, and further the torque of the pellet 5 is reduced.

The utility model discloses a be provided with first recess 3 on outer lane 1, the contact surface of first recess 3 and bobble 5 is the tank bottom of first recess 3, be provided with second recess 4 on inner circle 2, the contact surface of second recess 4 and bobble 5 is the both sides of second recess 4, make bobble 5 and outer lane 1 and inner circle 2 between have less area of contact and frictional resistance, be provided with a plurality of balls 14 on holder 6, the setting of ball 14 has reduced the frictional force between bobble 5 and holder 6, can effectively reduce the moment of torsion of bobble 5, make inner circle 2 rotate smoothly, can strengthen the wearability of inner circle 2 simultaneously, prolong bearing life, be provided with baffle 7 on the inner wall of outer lane 1, baffle 7 cooperates with cooperation groove 8 on the inner circle 2, the stability of inner circle 2 rotation has been improved, be provided with closing plate 9 in the outside of baffle 7, closing plate 9 cooperates with sliding seal 10 on it and has played sealed effect, the outside dust is prevented from entering the inside of the bearing, and the service life of the bearing is prolonged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a low temperature resistant low torque bearing, includes outer lane (1) and inner circle (2), its characterized in that: the inner ring (2) is positioned on the inner side of the outer ring (1), a first groove (3) is formed in the middle of the inner wall of the outer ring (1), a second groove (4) is formed in the middle of the outer side wall of the inner ring (2), a plurality of small balls (5) distributed in an annular array are arranged between the outer ring (1) and the inner ring (2), two ends of each small ball (5) are respectively positioned in the first groove (3) and the second groove (4), a retainer (6) is sleeved on the outer side of each small ball (5), the retainer (6) is fixedly installed on the inner wall of the outer ring (1), two ends of the inner wall of the outer ring (1) are fixedly connected with baffle plates (7), two ends of the outer side of the inner ring (2) are respectively provided with matching grooves (8) matched with the baffle plates (7), one end of each baffle plate (7) is inserted into the corresponding matching groove (8), and a sealing plate (9) is attached to the outer side of each baffle plate (7), one end of the sealing plate (9) is fixedly connected with the baffle (7) through a locking screw, the sealing plate (9) is arranged to be of an annular structure, a sliding sealing ring (10) is bonded on the inner side of the other end of the sealing plate (9), and the sliding sealing ring (10) is attached to the side wall of the inner ring (2).

2. A low temperature resistant low torque bearing as claimed in claim 1, wherein: the baffle (7) are provided with a plurality of, and a plurality of baffles (7) are distributed in an annular array.

3. A low temperature resistant low torque bearing according to claim 2, wherein: first recess (3) set up to V font structure, the tank bottom of first recess (3) sets up to the arc structure, the one end of bobble (5) is connected with the tank bottom laminating of first recess (3).

4. A low temperature resistant low torque bearing according to claim 3, wherein: the second groove (4) is of a three-section arc structure, and the other end of the small ball (5) is attached to the inner walls of the two sides of the second groove (4).

5. The low temperature resistant low torque bearing of claim 4, wherein: the retainer (6) comprises two fixing plates (11) fixed on the inner wall of the outer ring (1), the two fixing plates (11) are fixedly connected through an annular plate (12), and the annular plate (12) is sleeved on the outer side of the small ball (5).

6. The low temperature resistant low torque bearing of claim 5, wherein: a plurality of ball grooves (13) distributed in an annular array are formed in the inner wall of the annular plate (12), balls (14) are arranged in the ball grooves (13), and the balls (14) are attached to the small balls (5).