CN220791771U

CN220791771U - Four-side contact roller bearing

Info

Publication number: CN220791771U
Application number: CN202322548116.6U
Authority: CN
Inventors: 孙中臣
Original assignee: Tianjin Jintongchang Technology Co ltd
Current assignee: Tianjin Jintongchang Technology Co ltd
Priority date: 2023-09-20
Filing date: 2023-09-20
Publication date: 2024-04-16
Anticipated expiration: 2033-09-20

Abstract

The utility model discloses a four-side contact roller bearing, which relates to the technical field of bearings and comprises a plurality of cylindrical rollers, an outer ring, a first inner ring and a second inner ring, wherein the outer ring, the first inner ring and the second inner ring are coaxially arranged, a first V-shaped groove is formed on the inner wall surface of the outer ring, the end parts of the first inner ring and the second inner ring are matched to form a second V-shaped groove, the plurality of cylindrical rollers are arranged in the first V-shaped groove and the second V-shaped groove, the diameter size of each cylindrical roller is larger than the axial size of each cylindrical roller, the axes of two adjacent cylindrical rollers are vertical, and the side wall of any cylindrical roller is abutted against the side wall of the first V-shaped groove and the side wall of the second V-shaped groove; according to the utility model, cylindrical rollers with different orientations are respectively clamped between the first inner ring and the outer ring and between the second inner ring and the outer ring, and the first inner ring and the second inner ring cannot generate relative displacement relative to the outer ring, so that the problem of axial movement of shaft parts caused by gaps after installation can be avoided, and the stable operation of the shaft parts is ensured.

Description

Four-side contact roller bearing

Technical Field

The utility model relates to the technical field of bearings, in particular to a four-side contact roller bearing.

Background

The bearing is an important basic part of various mechanical equipment, and the precision, performance, service life and reliability of the bearing play a decisive role in the precision, performance, service life and reliability of a host. In mechanical products, bearings belong to high-precision products, not only are comprehensive support of various disciplines such as mathematics, physics and the like required, but also various disciplines such as material science, heat treatment technology, precision machining and measuring technology, numerical control technology, effective numerical method and powerful computer technology are required to serve, so the bearings are a product representing the actual force of national science and technology. With the increasing competition in the bearing manufacturing industry, the frequent combination of mergers and capital operations among large bearing manufacturing enterprises, and the domestic excellent bearing manufacturing enterprises increasingly pay attention to the research on the industry market, in particular to the deep research on the industry development environment and product purchasers. Because of this, a large group of domestic excellent bearing manufacturing brands are rapidly rising and gradually becoming in the bearing manufacturing industry.

The bearings may be classified into various types such as ball roller bearings, cylindrical roller bearings, tapered roller bearings, and the like. The conventional bearings have play substantially. Bearing play (internal clearance) refers to the total distance a bearing has a certain ring movable in a certain direction relative to another ring before the bearing is not mounted with the shaft or bearing housing. According to the direction of movement, radial play and axial play can be divided. Due to the existence of the clearance, the axial movement of the shaft equipment tends to occur in the running process, and the normal running of the equipment and the machining precision of the equipment are affected.

Disclosure of utility model

The utility model aims to provide a four-side contact roller bearing, which solves the problems in the prior art, ensures that the first inner ring and the second inner ring cannot move relatively to the outer ring, can avoid the problem of axial movement of shaft parts after installation, and ensures the stable operation of the shaft parts.

In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a four-side contact roller bearing, which comprises a plurality of cylindrical rollers, an outer ring, a first inner ring and a second inner ring, wherein the outer ring, the first inner ring and the second inner ring are coaxially arranged, a first V-shaped groove is formed on the inner wall surface of the outer ring, the end parts of the first inner ring and the second inner ring are matched to form a second V-shaped groove opposite to the first V-shaped groove, the cylindrical rollers are arranged in the first V-shaped groove and the second V-shaped groove, the diameter size of each cylindrical roller is larger than the axial size of each cylindrical roller, the axes of the two adjacent cylindrical rollers are perpendicular, the side wall of each cylindrical roller is propped against the side walls of the first V-shaped groove and the second V-shaped groove, and a gap is reserved between the end surface of each cylindrical roller and the side wall of the first V-shaped groove and/or the second V-shaped groove.

Preferably, a cylindrical separator is arranged between two adjacent cylindrical rollers, the size of the separator is smaller than that of the cylindrical rollers, and two end faces of the separator are respectively abutted with the side faces of the two cylindrical rollers.

Preferably, the separator is made of ceramic.

Preferably, the first inner ring is abutted against the end part of the second inner ring, the side wall of the end part of the first inner ring is provided with a first inclined plane, the side wall of the end part of the second inner ring is provided with a second inclined plane, and the first inclined plane and the second inclined plane form the second V-shaped groove.

Preferably, in a radial direction of the outer ring, gaps are formed between the first inner ring, the second inner ring and the outer ring.

Preferably, the first inner ring and the second inner ring are connected through bolts.

Preferably, the outer ring is further provided with fixing holes for fixing on other members.

Preferably, the included angles of the first V-shaped groove and the second V-shaped groove are 90 degrees.

Compared with the prior art, the utility model has the following technical effects:

1. According to the utility model, cylindrical rollers with different orientations are respectively clamped between the first inner ring and the outer ring and between the second inner ring and the outer ring, and gaps for shaking the first inner ring or the second inner ring do not exist between the first inner ring and the outer ring and between the second inner ring and the outer ring, so that the first inner ring and the second inner ring do not generate relative displacement relative to the outer ring, the problem of axial movement of shaft parts caused by the gaps after installation can be avoided, and the stable operation of the shaft parts is ensured;

2. Compared with the existing roller bearing, the four-side contact roller bearing does not need to be provided with the positioning rings to position the cylindrical roller, so that the structure is simpler, and the assembly process is more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a four-sided contact roller bearing of the present utility model;

FIG. 2 is a bottom view of FIG. 1;

FIG. 3 is a side cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of the structure of the outer ring;

FIG. 5 is a schematic view showing a structure in which a cylindrical roller and a spacer are disposed in a first V-groove;

FIG. 6 is a schematic view of the structure of the first inner ring;

FIG. 7 is a schematic view of a second inner ring;

1, a cylindrical roller; 2. an outer ring; 3. a first inner ring; 4. a second inner ring; 5. a first inclined surface; 6. a second inclined surface; 7. a third inclined surface; 8. a fourth inclined surface; 9. a partition; 10. a first through hole; 11. a second through hole; 12. a gap; 13. and a fixing hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

As shown in fig. 1 to 7, the present embodiment provides a four-sided contact roller bearing including a plurality of cylindrical rollers 1, and an outer ring 2, a first inner ring 3, and a second inner ring 4 coaxially disposed. The first inner ring 3 and the second inner ring 4 are disposed inside the outer ring 2. The inner wall surface of the outer ring 2 is provided with a first V-shaped groove, and two side walls of the first V-shaped groove are respectively a first inclined surface 5 and a second inclined surface 6 which are right angles. The end side wall of the first inner ring 3 is provided with a third inclined surface 7, the end side wall of the second inner ring 4 is provided with a fourth inclined surface 8, and the third inclined surface 7 and the fourth inclined surface 8 are mutually perpendicular to form a second V-shaped groove. The first inclined plane 5 and the third inclined plane 7 are parallel and opposite, and the second inclined plane 6 and the fourth inclined plane 8 are parallel and opposite. The cylindrical rollers 1 are arranged in the first V-shaped groove and the second V-shaped groove, the diameter size of each cylindrical roller 1 is larger than the axial size of each cylindrical roller, and the axes of two adjacent cylindrical rollers 1 are perpendicular. In the two adjacent cylindrical rollers 1, the side wall of one cylindrical roller 1 is tangential to and abutted against the first inclined plane 5 and the third inclined plane 7 at the same time, and the contact lines of the cylindrical roller 1 and the first inclined plane 5 and the third inclined plane 7 are on the same plane; the side wall of the other cylindrical roller 1 is tangential to and abutted against the second inclined surface 6 and the fourth inclined surface 8 at the same time, and the contact lines of the cylindrical roller 1, the second inclined surface 6 and the fourth inclined surface 8 are on the same plane. Since the axial dimension of the cylindrical roller 1 is smaller than the circular diameter dimension of the cross section, the cylindrical roller 1 is in the first V-shaped groove and the second V-shaped groove, the two end faces of the cylindrical roller 1 cannot be attached to the inclined planes on the two sides at the same time, and at least one inclined plane on one side is provided with a gap 12.

In the working process, the shaft part is sleeved in the first inner ring 3 and the second inner ring 4. When rotating, the first inner ring 3 and the second inner ring 4 rotate on the side walls of the cylindrical rollers 1 which are in contact with each other. In this embodiment, the cylindrical rollers 1 with different orientations are respectively clamped between the first inner ring 3 and the outer ring 2 and between the second inner ring 4 and the outer ring 2, and gaps 12 for shaking the first inner ring 3 or the second inner ring 4 do not exist between the first inner ring 3 and the outer ring 2 and between the second inner ring 4 and the outer ring 2, so that the first inner ring 3 and the second inner ring 4 do not generate relative axial or radial displacement relative to the outer ring 2, and therefore, the problem that axial movement occurs to shaft parts due to the gaps 12 after installation can be avoided, and stable operation of the shaft parts is ensured.

Because the two adjacent cylindrical rollers 1 are driven by the first inner ring 3 and the second inner ring 4 to rotate respectively, the central axes of the two adjacent cylindrical rollers 1 are mutually perpendicular. If the two cylindrical rollers 1 are closely adjacent, the two cylindrical rollers will be rubbed relatively, and the abrasion is serious. Therefore, in this embodiment, a cylindrical spacer 9 is disposed between two adjacent cylindrical rollers 1, and the spacer 9 is made of ceramic or other wear-resistant material. The size of the separator 9 is smaller than that of the cylindrical rollers 1, the axis of the separator 9 is perpendicular to the axes of the cylindrical rollers 1 on two sides of the separator, and two end faces of the separator 9 are respectively abutted against the side faces of the two cylindrical rollers 1. By providing the spacers 9, the wear of the cylindrical roller 1 can be reduced.

In this embodiment, the first inner ring 3 and the second inner ring 4 are detachably connected, and specifically, the first inner ring 3 and the second inner ring 4 are respectively and correspondingly provided with a first through hole 10 and a second through hole 11, and the first through hole 10 and the second through hole 11 may be stepped holes. The first inner ring 3 and the second inner ring 4 are connected by bolts penetrating through the through holes. When in installation, the cylindrical rollers 1 and the partition pieces 9 are firstly placed in the first V-shaped grooves of the outer ring 2, the partition pieces 9 are arranged at intervals with the cylindrical rollers 1, and the axes of the cylindrical rollers 1 on two sides of the partition pieces 9 are perpendicular. Then, place first inner circle 3, second inner circle 4 in place, utilize the bolt to take up both, when taut, first inner circle 3, second inner circle 4 all compress tightly cylindrical roller 1 for the roller subassembly that cylindrical roller 1 constitutes contacts with first inclined plane 5, second inclined plane 6, third inclined plane 7 and fourth inclined plane 8, realizes spacing to the roller subassembly. On the premise that the outer ring 2 is fixed, the first inner ring 3 and the second inner ring 4 do not move axially.

In addition, because the cylindrical roller 1 in this embodiment is clamped and positioned only by the outer ring 2, the first inner ring 3 and the second inner ring 4, compared with the existing roller bearing, the four-side contact roller bearing in this embodiment does not need to be provided with a positioning ring to position the cylindrical roller 1, and the structure is simpler and the assembly process is more convenient.

Further, in the present embodiment, in the radial direction of the outer ring 2, the first inner ring 3, the second inner ring 4 and the outer ring 2 each have a gap 12 therebetween.

Further, the outer ring 2 in this embodiment is further provided with fixing holes 13 for fixing to other members.

The adaptation to the actual need is within the scope of the utility model.

It should be noted that it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a four sides contact roller bearing, its characterized in that includes a plurality of cylindrical rollers and coaxial outer lane, first inner circle, the second inner circle that sets up, be provided with first V type recess on the internal face of outer lane, first inner circle with the tip cooperation of second inner circle forms with the second V type recess that first V type recess is just right, a plurality of cylindrical rollers set up first V type recess with in the second V type recess, the diameter size of cylindrical rollers is greater than its axial dimension, adjacent two the axis of cylindrical rollers is mutually perpendicular, arbitrary cylindrical roller's lateral wall all with first V type recess, the lateral wall looks butt of second V type recess, the terminal surface of cylindrical roller with have the clearance between the lateral wall of first V type recess and/or second V type recess.

2. A four-sided contact roller bearing according to claim 1, wherein a cylindrical spacer is provided between two adjacent cylindrical rollers, the spacer having a smaller size than the cylindrical rollers, and both end surfaces of the spacer abut against the side surfaces of the two cylindrical rollers, respectively.

3. A four sided contact roller bearing according to claim 2, wherein the spacers are made of ceramic.

4. A four sided contact roller bearing according to claim 1 or 2, wherein the ends of the first inner ring and the second inner ring abut, the end side wall of the first inner ring having a first bevel, the end side wall of the second inner ring having a second bevel, the first and second bevels forming the second V-groove.

5. The four-sided contact roller bearing according to claim 4, wherein in a radial direction of the outer ring, the first inner ring, the second inner ring and the outer ring each have a gap therebetween.

6. The four sided contact roller bearing according to claim 5, wherein the first inner race and the second inner race are bolted together.

7. A four sided contact roller bearing according to claim 1, wherein the outer ring is further provided with fixing holes for fixing to other components.

8. A four sided contact roller bearing according to claim 1, wherein the included angle of the first V-groove and the second V-groove is 90 .