CN210769824U

CN210769824U - Combined deep groove ball bearing

Info

Publication number: CN210769824U
Application number: CN201921699570.9U
Authority: CN
Inventors: 吴典央
Original assignee: Wuxi Yanpu Bearing Manufacturing Co Ltd
Current assignee: Wuxi Yanpu Bearing Manufacturing Co Ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-06-16
Anticipated expiration: 2029-10-11

Abstract

The utility model belongs to the technical field of the bearing manufacturing technique and specifically relates to a modular deep groove ball bearing is related to, including the bearing inner race, be equipped with the bearing inner race in the bearing inner race, be equipped with the bearing holder in the annular clearance of bearing inner race and bearing outer race, be equipped with a set of ball on the bearing holder, the quantity of bearing inner race and bearing holder is two, and bearing holder of the cover is gone up to every bearing inner race, and two bearing inner races, two bearing holders all about the bearing outer race symmetry, and the outside end integrated into one piece of bearing inner race has annular baffle, and annular baffle is used for blocking a set of ball, all balls all with the inner wall contact of bearing outer race. The utility model discloses utilize two lock nuts to compress tightly two bearing inner race respectively, utilize the ring baffle of bearing inner race to push down the bearing holder, because lock nut's the effect that compresses tightly, even bearing holder atress increases, the bearing holder can not radial drunkenness yet.

Description

Combined deep groove ball bearing

Technical Field

The utility model belongs to the technical field of the bearing manufacturing technique and specifically relates to a modular deep groove ball bearing is related to.

Background

The bearing is an important part in the modern mechanical equipment, and is mainly used for determining the relative movement position of the rotating shaft and other parts, and plays a role in supporting or guiding. The main function of the bearing is to support the mechanical rotating body for reducing the mechanical load friction coefficient of the equipment in the transmission process, the bearing can be divided into two types of rolling bearings and sliding bearings according to the difference of the friction properties of moving elements, the deep groove ball bearing is the most common type of the rolling bearings, and the basic type deep groove ball bearing is composed of an outer ring, an inner ring, a group of steel balls and a group of retainers.

The deep groove ball bearing on the existing market is mainly composed of a bearing inner ring and a bearing outer ring, a retainer is arranged in an annular channel formed between the bearing inner ring and the bearing outer ring, the retainer is wavy, a ball pocket and a hole beam located between the ball pockets are arranged on a wavy retainer body, the structural design of the deep groove ball bearing is unreasonable, the problems of large contact area between a steel ball and the ball pocket and strong friction exist, the stress of the retainer is increased, and radial play can be generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a modular deep groove ball bearing has the advantage that can not produce radial drunkenness when the holder atress increases.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a modular deep groove ball bearing, includes the bearing inner race, is equipped with the bearing inner race in the bearing inner race, is equipped with the bearing holder in the annular clearance of bearing inner race and bearing outer race, is equipped with a set of ball on the bearing holder, the quantity of bearing inner race and bearing holder is two, and bearing holder of cover on every bearing inner race, and two bearing inner races, two bearing holders all are symmetrical about the bearing outer race, and the outside end integrated into one piece of bearing inner race has annular baffle, and annular baffle is used for blocking a set of ball, all balls all with the inner wall contact of bearing outer race, and the bearing inner race compresses tightly in the bearing outer race through lock nut, and the bearing inner race is used for wearing to establish the axle, and lock.

By adopting the technical scheme, the shaft is fixedly penetrated in the bearing inner ring, then the two locking nuts (the two locking nuts are respectively positioned at two sides of the bearing) are connected on the shaft in a threaded manner, the two locking nuts are screwed, the two locking nuts are respectively pressed on the two bearing inner rings, the annular baffle of the bearing inner ring presses the bearing retainer, and the bearing retainer cannot radially move due to the compression effect of the locking nuts even if the stress of the bearing retainer is increased.

Preferably, an annular bulge is formed on the inner wall of the bearing outer ring in a protruding mode, the annular bulge is coaxial with the bearing outer ring, annular channels are formed on two sides of the annular bulge, the two annular channels are symmetrical about the annular bulge, and each annular channel is used for containing a group of balls.

By adopting the technical scheme, the contact area of the annular channel and the balls is large, so that when the bearing retainer is pressed, the pressure of the contact part of the balls and the annular channel is small, namely the friction force of the contact part of the balls and the annular channel is small, the abrasion of the balls can be reduced, and the service life of the balls is prolonged.

Preferably, the balls have a gap with the groove bottom of the annular channel.

Through adopting above-mentioned technical scheme, lubricated grease can be stored in the clearance between the ditch bottom of ball surface and annular channel, is favorable to the lubrication to the ball.

Preferably, the edges of two sides of the inner wall of the bearing outer ring are provided with annular surfaces, and the annular surfaces are parallel to the arc surface of the outer wall of the bearing outer ring and tangent to the annular channel.

By adopting the technical scheme, a group of balls on the bearing retainer can smoothly enter the annular channel without resistance.

Preferably, an annular fillet is arranged at the transition position of the inner side surface of the annular baffle facing the cambered surface of the outer wall of the bearing inner ring, and the fillet is in contact with a group of balls.

Through adopting above-mentioned technical scheme, when the bearing holder pressurized, a set of ball was pressed on the fillet, and the fillet is the same with the effect of annular channel, increases promptly with the area of contact of ball, reduces the local frictional force that receives of ball, reduces the wearing and tearing of ball to the life of extension ball.

Preferably, an oil groove is formed in the end face of the inner side of the bearing inner ring.

Through adopting above-mentioned technical scheme, can inject lubricating grease to the bearing retainer from the oil groove.

Preferably, the distance between the outer end faces of the two bearing inner rings is greater than the distance between the outer end faces of the two bearing retainers.

By adopting the technical scheme, the bearing retainer is prevented from protruding out of the bearing inner ring, and the bearing retainer is prevented from being deformed under pressure due to the fact that the locking nut is pressed on the bearing retainer.

Preferably, the outer end of the bearing holder is thicker than the inner end, and the bearing holder is thicker at the position closer to the annular baffle.

By adopting the technical scheme, the bearing retainer adopts the design of thick outside and thin inside, so that enough space for storing lubricating grease is ensured in the annular gap between the bearing outer ring and the bearing inner ring; and the bearing retainer (plastic retainer) with thick outside and thin inside also has good toughness and can restore to the original shape after bearing larger pressure.

To sum up, the utility model discloses a beneficial technological effect does:

1. the two locking nuts are used for respectively pressing the two bearing inner rings, the annular baffle plates of the bearing inner rings are used for pressing the bearing retainer, and due to the pressing effect of the locking nuts, the bearing retainer cannot move radially even if the stress of the bearing retainer is increased;

2. the bearing retainer adopts the design of thick outside and thin inside, which not only ensures that enough space is provided for storing lubricating grease in the annular clearance between the bearing outer ring and the bearing inner ring, but also ensures that the plastic retainer has good toughness and can still recover the original shape after bearing larger pressure.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the combined deep groove ball bearing in the embodiment;

FIG. 2 is a schematic structural view of a bearing inner race;

FIG. 3 is a schematic structural view of a bearing outer race;

FIG. 4 is a schematic structural view of a bearing cage;

fig. 5 is a schematic mounting diagram of the combined deep groove ball bearing in the embodiment.

In the figure, 1, a bearing outer ring; 2. a bearing inner race; 3. a bearing retainer; 4. a ball bearing; 5. an annular baffle; 6. a shaft; 7. locking the nut; 8. an annular projection; 9. an annular channel; 10. an oil sump; 11. an annular face; 12. and (4) rounding.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): fig. 1 is the utility model discloses a modular deep groove ball bearing, including a bearing inner race 1, two bearing inner races 2, two bearing retainer 3, two bearing inner races 2 are installed into bearing inner race 1 from bearing inner race 1's both sides respectively, and bearing retainer 3 of 2 upper housings in every bearing inner race all installs a set of ball 4 on every bearing retainer 3, and the bearing retainer 3 of installing ball 4 is located the annular clearance between bearing inner race 2 and the bearing inner race 1.

As shown in fig. 2, three oil grooves 10 are equally spaced on the inward-facing end surface of each inner bearing ring 2 (facing into the outer bearing ring 1), and when the inner bearing rings are mounted in place, the inward-facing end surfaces of the two inner bearing rings 2 are connected (see fig. 1), and grease can be injected from the oil grooves 10 to the bearing cage 3. An annular baffle 5 is integrally formed on the outward end face of each bearing inner ring 2, and the annular baffle 5 is used for blocking a group of balls 4. The annular baffle 5 is perpendicular to the central axis 6 of the bearing inner ring 2, and the annular baffle 5 is coaxial with the bearing inner ring 2. The inner side of the annular baffle 5 faces the cambered surface transition part of the outer wall of the bearing inner ring 2 and is provided with an annular fillet 12, and the fillet 12 is in contact with the group of balls 4. The contact area between the fillet 12 and the ball 4 is large, so when the bearing retainer 3 is pressed, the pressure at the contact position between the ball 4 and the fillet 12 is small, namely the friction force at the contact position between the ball 4 and the fillet 12 is small, thereby reducing the abrasion of the ball 4 and prolonging the service life of the ball 4.

As shown in fig. 3, an annular protrusion 8 is convexly formed on the inner wall of the bearing outer ring 1, the annular protrusion 8 is coaxial with the bearing outer ring 1, and the two bearing inner rings 2 and the two bearing retainers 3 are symmetrical about the annular protrusion 8. Two sides of the annular protrusion 8 are both formed with an annular channel 9, the two annular channels 9 are symmetrical with respect to the annular protrusion 8, and each annular channel 9 is used for accommodating a group of balls 4. When the bearing retainer 3 is pressed, a group of balls 4 are pressed on the annular channel 9, the annular channel 9 and the fillet 12 have the same effect, namely, the contact area of the annular channel 9 and the balls 4 is increased, the local friction force of the balls 4 is reduced, the abrasion of the balls 4 is reduced, and therefore the service life of the balls 4 is prolonged.

The annular surfaces 11 are arranged on the edges of the two sides of the inner wall of the bearing outer ring 1, the annular surfaces 11 are parallel to the arc surface of the outer wall of the bearing outer ring 1, and the annular surfaces 11 are tangent to the annular channel 9. The distance between the outer end faces of the two bearing inner rings 2 is greater than that between the outer end faces of the two bearing retainers 3, so that the bearing retainers 3 can be prevented from protruding out of the bearing inner rings 2, and the bearing retainers 3 are prevented from being deformed under pressure due to the fact that the lock nuts 7 are pressed on the bearing retainers 3.

As shown in fig. 4, the outer end of the bearing holder 3 is thicker than the inner end, and the bearing holder 3 is thicker as it is closer to the ring baffle 5. The bearing retainer 3 adopts the design of thick outside and thin inside, so that enough space for storing lubricating grease is ensured in the annular gap between the bearing outer ring 1 and the bearing inner ring 2; and the bearing retainer 3 (plastic retainer) with thick outside and thin inside also has good toughness and can restore to the original shape after bearing larger pressure.

The implementation principle of the embodiment is as follows: as shown in fig. 5, when the combined deep groove ball bearing is installed, the shaft 6 is fixed in the two bearing inner rings 2, then the two lock nuts 7 are connected to the shaft 6 in a threaded manner (the two lock nuts 7 are respectively located at two sides of the bearing 6), the two lock nuts 7 are screwed, the two lock nuts 7 are respectively pressed on the two bearing inner rings 2, the annular baffle 5 of the bearing inner ring 2 presses the balls 4 on the bearing retainer 3, and due to the pressing effect of the lock nuts 7, even if the bearing retainer 3 is stressed to an increased degree, the bearing retainer 3 cannot move radially.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a modular deep groove ball bearing, includes bearing inner race (1), is equipped with bearing inner race (2) in bearing inner race (1), is equipped with bearing holder (3) in the annular clearance of bearing inner race (2) and bearing inner race (1), is equipped with a set of ball (4) on bearing holder (3), its characterized in that: the bearing inner race (2) and the quantity of bearing holder (3) are two, bearing holder (3) of cover on every bearing inner race (2), and two bearing inner races (2), two bearing holders (3) all are symmetrical about bearing outer lane (1), the outside end integrated into one piece of bearing inner race (2) has ring baffle (5), ring baffle (5) are used for blocking a set of ball (4), all ball (4) all contact with the inner wall of bearing outer lane (1), bearing inner race (2) compress tightly in bearing outer lane (1) through lock nut (7), bearing inner race (2) are used for wearing to establish axle (6), lock nut (7) spiro union is on axle (6).

2. The combined deep groove ball bearing of claim 1, wherein: the bearing comprises a bearing outer ring (1), wherein an annular bulge (8) is formed on the inner wall of the bearing outer ring (1), the annular bulge (8) is coaxial with the bearing outer ring (1), one annular channel (9) is formed on each of two sides of the annular bulge (8), the two annular channels (9) are symmetrical about the annular bulge (8), and each annular channel (9) is used for accommodating a group of balls (4).

3. The combined deep groove ball bearing of claim 2, wherein: a gap is reserved between the ball (4) and the groove bottom of the annular groove (9).

4. The combined deep groove ball bearing of claim 3, wherein: the edge of two sides of the inner wall of the bearing outer ring (1) is provided with annular surfaces (11), and the annular surfaces (11) are parallel to the arc surface of the outer wall of the bearing outer ring (1) and tangent to the annular channel (9).

5. The combined deep groove ball bearing of claim 1, wherein: the inner side of the annular baffle (5) faces the outer wall cambered surface transition position of the bearing inner ring (2) and is provided with an annular fillet (12), and the fillet (12) is in contact with a group of balls (4).

6. The combined deep groove ball bearing of claim 1, wherein: and an oil groove (10) is formed in the end face of the inner side of the bearing inner ring (2).

7. The combined deep groove ball bearing of claim 1, wherein: the distance between the outer end faces of the two bearing inner rings (2) is greater than that between the outer end faces of the two bearing retainers (3).

8. The combined deep groove ball bearing of claim 1, wherein: the outer side end of the bearing retainer (3) is thicker than the inner side end, and the position, which is closer to the annular baffle (5), of the bearing retainer (3) is thicker.