CN215720196U

CN215720196U - Ball type slewing bearing

Info

Publication number: CN215720196U
Application number: CN202121200878.1U
Authority: CN
Inventors: 王立强
Original assignee: Ma'anshan Bochuang Slewing Ring Co ltd
Current assignee: Ma'anshan Bochuang Slewing Ring Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-02-01
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a ball type slewing bearing, which comprises an outer ring and an inner ring which are sequentially sleeved from outside to inside, wherein the inner side surface of the outer ring is matched with the outer side surface of the inner ring to form a raceway, and a rolling assembly is arranged in the raceway; the rolling assembly comprises a plurality of partition block groups which are detachably arranged on the inner ring or the outer ring, the partition block groups are surrounded to form an annular retainer, pockets are arranged on the partition block groups at equal intervals, and rolling bodies are correspondingly placed in the pockets. According to the utility model, the rolling assembly is arranged into a plurality of detachable partition block groups, and different partition block groups are replaced according to actual conditions in a targeted manner, so that the problem that the local position is easy to wear and damage can be solved; meanwhile, local spacer blocks or rolling bodies can be replaced pertinently according to actual conditions, replacement cost of the whole rolling assembly is correspondingly reduced, and overall use cost is further reduced.

Description

Ball type slewing bearing

Technical Field

The utility model relates to the field of slewing bearing structures, in particular to a spherical slewing bearing.

Background

The slewing bearing is an important mechanical part, is mainly used for relative slewing motion between two objects, is called as a joint of a machine, and is often required to bear stress in multiple directions such as axial force and radial force. Meanwhile, in the using process, under the influence of the using environment and the like, the local stress or the stress in a specific direction is often too large, so that the local part (mainly a rolling part) is easy to wear and damage, and once the local part is damaged, the whole part is often required to be replaced.

There are some slewing bearing structures convenient to detach among the prior art, but if equipment itself or environment cause its the great problem of the eccentric force in certain direction that appears, even then convenient to detach, nevertheless still need the whole change of part after the dismantlement to, the great problem of this kind of eccentric force is difficult to obtain effectual solution in the production operation in-process, consequently, still needs frequently to change the part. In the case of a large slewing bearing, replacement of a component once means complete scrapping of the component (since the cage of the bearing is in contact with lubricating oil for a long time, steel and brass are generally used), which results in an excessive material cost.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art, an object of the present invention is to overcome the problems in the prior art that the service life of part of components of a ball slewing bearing is reduced due to the fact that the local stress of the slewing bearing is too large due to external factors such as equipment and environment, and the cost is further increased due to frequent replacement, so as to provide a ball slewing bearing which can effectively replace local components in a large structure according to actual conditions, improve the utilization efficiency of the whole components in a targeted manner, and reduce the use cost.

In order to achieve the above object, the present invention provides a ball slewing bearing, which includes an outer ring and an inner ring sleeved in sequence from outside to inside, wherein a raceway is formed by matching an inner side surface of the outer ring with an outer side surface of the inner ring, and a rolling assembly is disposed in the raceway.

The rolling assembly comprises a plurality of partition blocks detachably arranged on the inner ring or the outer ring, the partition blocks are surrounded to form an annular retainer, pockets are arranged on the partition blocks at equal intervals, and rolling bodies are correspondingly placed in the pockets.

Preferably, the inner ring or the inner surface of the outer ring is correspondingly provided with at least one group of positioning and mounting holes, and the partition block group is provided with mounting pieces which are clamped with the positioning and mounting holes.

Preferably, the inner ring or the outer ring provided with the positioning mounting holes is formed by splicing an upper ring body and a lower ring body, one of the positioning mounting holes in each group of the positioning mounting holes is respectively arranged on the upper ring body and the lower ring body, and the axes of the positioning mounting holes in each group are on the same straight line.

Preferably, adjacent two be formed with mosaic structure between the spacer group, mosaic structure is including setting up in one of them slot on one of them terminal surface of spacer group to and set up in another the inserted sheet on the adjacent terminal surface in the spacer group.

Preferably, a splicing structure is formed between two adjacent partition block groups, the splicing structure includes an arc-shaped rod arranged on one end surface of one partition block group, and an arc-shaped groove arranged on an end surface of the other partition block group, which is in contact with the end surface on which the arc-shaped rod is arranged, and the arc-shaped groove extends to the side surface of the partition block group and is formed with an opening;

the outer side of the arc-shaped rod is further coated with an elastic gasket.

Preferably, each pocket includes a circular hole body, and an arc-shaped baffle piece bent from the circumferential surface of the circular hole body toward the center of the circular hole body.

Preferably, the arc-shaped baffle plates have the same radian and are arranged at equal intervals in the circumferential direction of the circular hole body.

According to the technical scheme, the rolling assembly is arranged into the plurality of detachable partition block groups, and different partition block groups are replaced according to actual conditions in a targeted manner, so that the problem that the local position is easy to wear and damage can be solved; meanwhile, local spacer blocks or rolling bodies can be replaced pertinently according to actual conditions, replacement cost of the whole rolling assembly is correspondingly reduced, and overall use cost is further reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural view of a ball-type slew bearing provided by the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a partial cross-sectional view of a ball slew bearing provided by the present invention;

FIG. 4 is a partial schematic view of one of the splice structures provided by the present invention;

FIG. 5 is a schematic view of one of the pockets of the present invention.

Description of the reference numerals

1-outer ring 2-inner ring

3-raceway 4-spacer group

5-Rolling element 6-Mount

7-upper ring body and 8-lower ring body

9-inserting piece 10-arc rod

11-elastic gasket 12-arc-shaped baffle plate.

Detailed Description

The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

As shown in fig. 1 to 5, the present invention provides a ball slewing bearing, which includes an outer ring 1 and an inner ring 2 sleeved in sequence from outside to inside, and a raceway 3 is formed by matching an inner side surface of the outer ring 1 and an outer side surface of the inner ring 2, and a rolling assembly is disposed in the raceway 3; wherein the content of the first and second substances,

the rolling assembly comprises a plurality of partition blocks 4 detachably arranged on the inner ring 2 or the outer ring 1, the partition blocks 4 are enclosed to form an annular retainer, pockets are arranged on the partition blocks 4 at equal intervals, and rolling bodies 5 are correspondingly placed in the pockets.

According to the utility model, the rolling assembly is arranged into a plurality of detachable partition block groups 4, and different partition block groups 4 are replaced according to actual conditions in a targeted manner, so that the problem that the local position is easy to wear and damage can be solved; meanwhile, local spacer blocks 4 or rolling bodies 5 can be replaced according to actual conditions, accordingly, the replacement cost of the whole rolling assembly is reduced, and the overall use cost is further reduced.

In a preferred embodiment of the present invention, in order to better and specifically achieve effective fixing and detaching of the spacer group 4, at least one set of positioning and mounting holes is correspondingly provided on the inner surface of the inner ring 2 or the outer ring 1, and the spacer group 4 is provided with a mounting piece 6 which is clamped in the positioning and mounting holes. Of course, the mounting member 6 may be a mounting rod matching with the positioning and mounting hole structure, and the shape may be any suitable rod shape as long as the displacement and rotation thereof are avoided.

In a further preferred embodiment, in order to better achieve detachment and installation and achieve local replacement of an internal rolling assembly without integrally detaching a slewing bearing, the inner ring 2 or the outer ring 1 provided with the positioning mounting holes is formed by splicing an upper ring body 7 and a lower ring body 8, one of the positioning mounting holes in each group is respectively arranged on the upper ring body 7 and the lower ring body 8, and the axes of the positioning mounting holes in each group are on the same straight line. Through the arrangement, the rolling assembly can be installed and replaced only by separating the upper ring body 7 from the lower ring body 8, and meanwhile, the partial partition block group 4 and the rolling bodies on the partial partition block group can be effectively replaced on the premise of local replacement. Of course, the splicing between the upper ring body 7 and the lower ring body 8 here may be performed by using a fixing member that can be understood by those skilled in the art, for example, a fixing bolt, and is not described herein again.

In a further preferred embodiment, a splicing structure is formed between two adjacent partition block groups 4, and the splicing structure includes a slot disposed on one end face of one of the partition block groups 4, and a tab 9 disposed on the other end face of the adjacent partition block group 4. Through the cooperation mode of slot and inserted sheet 9, can easily realize the dismouting between the adjacent spacer block group 4, simultaneously, also can improve the area of contact of the two better, realize the stability of the holder after assembling better.

Similarly, in another preferred embodiment of the present invention, the splicing structure may also adopt another arrangement, specifically, the splicing structure includes an arc-shaped rod 10 disposed on one end surface of one of the partition blocks 4, and an arc-shaped groove disposed on an end surface of the other partition block 4, which is in contact with the end surface on which the arc-shaped rod 10 is disposed, and the arc-shaped groove extends to a side surface of the partition block 4 and is formed with an opening;

the outer side of the arc-shaped rod 10 is also coated with an elastic gasket 11.

Through the open-ended setting, can realize the concatenation that corresponds of arc pole 10 based on inserting of installed part 6, simultaneously, the setting of elastic gasket 11 can reduce better at the operation in-process, and the impact each other between two spacer groups 4 improves holistic stability and impact resistance.

Of course, based on the problem of easy wear caused by the problem of local uneven stress, in another preferred embodiment of the present invention, each pocket includes a circular hole body and an arc-shaped blocking piece 12 bent from the circumferential surface of the circular hole body toward the center of the circular hole body. Through the setting of incurving arc separation blade 12, avoid the cambered surface between conventional circular pocket and the rolling element 5 to cooperate, the contact surface is big, and the friction is also bigger problem to further reduce frictional force through reducing area of contact between the two, also can better the different spacer group 4 of adaptation, improve holistic wear resistance. Meanwhile, the spacer block group 4 in the direction not prone to wear can further adopt a conventional circular pocket, so that radial and circumferential loads can be better borne.

In a further preferred embodiment, the arc-shaped baffles 12 have the same radian and are arranged at equal intervals in the circumferential direction of the circular hole body.

The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the utility model is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. The ball type slewing bearing is characterized by comprising an outer ring (1) and an inner ring (2) which are sequentially sleeved from outside to inside, wherein a roller path (3) is formed by matching the inner side surface of the outer ring (1) and the outer side surface of the inner ring (2), and a rolling assembly is arranged in the roller path (3); wherein the content of the first and second substances,

the rolling assembly comprises a plurality of partition blocks (4) detachably arranged on the inner ring (2) or the outer ring (1), the partition blocks (4) are enclosed to form an annular retainer, pockets are arranged on the partition blocks (4) at equal intervals, and rolling bodies (5) are correspondingly placed in the pockets.

2. The ball-type slewing bearing according to claim 1, characterized in that at least one set of positioning and mounting holes are correspondingly formed in the inner surface of the inner ring (2) or the outer ring (1), and mounting pieces (6) which are clamped in the positioning and mounting holes are arranged on the spacer block set (4).

3. The ball-type slewing bearing according to claim 2, characterized in that the inner ring (2) or the outer ring (1) provided with the positioning mounting holes is formed by splicing an upper ring body (7) and a lower ring body (8), and the upper ring body (7) and the lower ring body (8) are respectively provided with one of the positioning mounting holes in each group of the positioning mounting holes, and the axes of the positioning mounting holes in each group are on the same straight line.

4. A ball-type slewing bearing according to any one of claims 1-3, characterized in that a splicing structure is formed between two adjacent spacer groups (4), the splicing structure comprising a slot provided on one of the end faces of one of the spacer groups (4) and a tab (9) provided on the adjacent end face of the other spacer group (4).

5. The ball-type slewing bearing according to any one of claims 1 to 3, characterized in that a splicing structure is formed between two adjacent spacer groups (4), the splicing structure comprises an arc-shaped rod (10) arranged on one end face of one of the spacer groups (4) and an arc-shaped groove arranged on the end face of the other spacer group (4) which is in contact with the end face on which the arc-shaped rod (10) is arranged, and the arc-shaped groove extends to the side face of the spacer group (4) and is formed with an opening;

the outer side of the arc-shaped rod (10) is further coated with an elastic gasket (11).

6. A ball slewing bearing according to any one of claims 1-3, characterized in that each pocket comprises a round hole body and a curved flap (12) curved from the circumferential surface of the round hole body towards the centre of the round hole body.

7. Ball slewing bearing according to claim 6, characterized in that the arc degrees of the arc flaps (12) are identical and are arranged at equal intervals in the circumferential direction of the circular bore body.