CN219013179U

CN219013179U - Internally-arranged sealing type crossed cylindrical roller bearing with selectable contact angle

Info

Publication number: CN219013179U
Application number: CN202223427662.6U
Authority: CN
Inventors: 李明利; 陈明育; 张晓杨; 杨梦科
Original assignee: Luoyang LYC Bearing Co Ltd
Current assignee: Luoyang Bearing Group Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-05-12
Anticipated expiration: 2032-12-21

Abstract

The utility model relates to the technical field of turntable bearings, in particular to a selectable contact angle built-in sealing type crossed cylindrical roller bearing which comprises a bearing inner ring, a bearing outer ring, a sealing ring and crossed cylindrical rollers, wherein a rollaway I and a rollaway II are arranged on the inner circumferential wall of the bearing outer ring, a rollaway III and a rollaway IV are arranged on the outer circumferential wall of the bearing inner ring, the rollaway I, the rollaway II, the rollaway III and the rollaway IV form a rollaway body which is suitable for installing the crossed cylindrical rollers, and the crossed cylindrical rollers are arranged in the rollaway body.

Description

Internally-arranged sealing type crossed cylindrical roller bearing with selectable contact angle

Technical Field

The utility model relates to the technical field of turntable bearings, in particular to a selectable contact angle built-in sealing type crossed cylindrical roller bearing.

Background

Modern engineering applications require bearings with as small a design size as possible and with as large a bearing capacity as possible, since the conventional crossed cylindrical roller bearing structure is as follows: the roller paths I, II, III and IV are designed with a contact angle structure with 45 degrees in the axial direction, rollers are distributed in the roller paths in a crossed mode, when the novel anti-rolling device is used, one half of the rollers are in contact with the roller paths I and III to bear axial load Fa and overturning moment M, the other half of the rollers are in contact with the roller paths II and IV to bear overturning moment M, when radial force Fr is smaller, only the roller paths I and III bear, and when Fr is larger, four roller paths bear simultaneously; since the contact angle and the number of rollers are fixed, the axial bearing capacity of the bearing and the capacity of bearing the overturning moment are strongly related, but the axial load and the overturning moment are changeable in the use working condition of the bearing, so that the situation that the axial bearing of the bearing is rich and the overturning moment is insufficient can occur. Meanwhile, the existing bearing adopts single-lip axial sealing as shown in the figure I, a certain height difference is required between the inner ring and the outer ring of the bearing for arranging sealing, when the equipment requirement is low in height, the axial dimension of the bearing required by a user is small, and larger bearing capacity is required, so that the general design cannot meet the requirement.

Disclosure of Invention

The utility model aims to provide a selectable contact angle built-in sealing type crossed cylindrical roller bearing, which is simple and convenient in overall structure composition, and can enable the bearing to achieve the aim of targeted optimal design suitable for specific working conditions according to the specific working conditions of the bearing.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a sealed crossed cylindrical roller bearing of optional contact angle embeds, includes bearing inner race, bearing outer lane, sealing washer and crossed cylindrical roller, has seted up raceway I and raceway II on the interior circumference wall of bearing outer lane, has seted up raceway III and raceway IV on the exterior circumference wall of bearing inner lane, raceway I, raceway II, raceway III and raceway IV four constitute the raceway body that the crossed cylindrical roller of adaptation was installed, crossed cylindrical roller install in the raceway body, raceway body and bearing inner lane, the axial of bearing outer lane be formed with deflection angle, seted up outer circular arc groove on the exterior circumference wall of bearing inner lane, seted up interior circular arc groove on the interior circumference wall of bearing outer lane, the sealing washer install in outer circular arc groove and interior circular arc groove.

The deflection angle is adjusted and selected within 30-55 degrees.

The groove profile of the outer arc groove and the inner arc groove is larger than the outer profile of the sealing ring, so that the sealing ring can deform and flow in the outer arc groove and the inner arc groove when the bearing is assembled.

Further, the outer arc groove and the inner arc groove are correspondingly arranged, and the grooved profile of the outer arc groove is larger than that of the inner arc groove.

Further, the outer arc groove and the inner arc groove are correspondingly arranged, and the grooved profile of the outer arc groove is smaller than that of the inner arc groove.

Furthermore, two groups of inner circular arc grooves are formed in the inner circumferential wall of the bearing outer ring.

Furthermore, two groups of outer circular arc grooves are formed in the outer circumferential wall of the bearing inner ring.

The beneficial effects of the utility model are as follows: the utility model has scientific design of the whole structure of the alternative contact angle built-in sealing type crossed cylindrical roller bearing, and has the following technical characteristics and advantages compared with the crossed cylindrical roller bearing with the existing structure:

1. compared with the crossed cylindrical roller bearing with the existing structure, the utility model can meet the design requirement of the small-size and lightweight bearing under specific working conditions, and the size of the bearing is not required to be increased only for improving the axial bearing capacity or the overturning moment bearing capacity, so that the installation space and the economic cost are saved;

2. the outer arc groove and the inner arc groove in the alternative contact angle built-in sealed crossed cylindrical roller bearing are correspondingly arranged, the arc groove on one side is shorter, the arc groove on one side is longer, the sealing ring can conveniently fall into the arc groove space opposite to the inner ring and the outer ring of the bearing, and the position accuracy requirement of arc groove processing is reduced.

Drawings

FIG. 1 is a schematic view of the mounting structure of a crossed cylindrical roller bearing of the present utility model;

FIG. 2 is a layout of raceways in a crossed cylindrical roller bearing of the present utility model;

FIG. 3 is a schematic diagram showing a first state of the seal ring according to the present utility model;

FIG. 4 is a second schematic diagram of the installation of the seal ring according to the present utility model;

FIG. 5 is a schematic view of a conventional crossed cylindrical roller bearing structure;

FIG. 6 is a schematic diagram of a raceway arrangement in a conventional crossed cylindrical roller bearing structure;

the reference numerals in the figures are: 1-rollaway nest I, 2-rollaway nest II, 3-rollaway nest III, 4-rollaway nest IV, 5-crossed cylindrical rollers, 6-sealing rings, 7-outer arc grooves, 8-inner arc grooves, 9-bearing inner rings and 10-bearing outer rings.

Detailed Description

In order to make the technical solution of the present utility model better understood by those skilled in the art, the present utility model is further described in detail below with reference to the drawings and the detailed description, and it should be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly or indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "left" and "right" used in this specification to denote orientations are each referenced to a particular structure shown in the drawings, and are not to be construed as limiting the structure.

Specific example 1: as shown in an attached drawing 1 of an instruction book and an attached drawing 2 of the instruction book, the utility model provides a cross cylindrical roller 5 bearing with a built-in sealing type of a selectable contact angle, which mainly comprises a bearing inner ring 9, a bearing outer ring 10, a sealing ring 6 and the cross cylindrical roller 5, wherein a rollaway I1 and a rollaway I I are arranged on the inner circumferential wall of the bearing outer ring 10, a rollaway I3 and a rollaway I V are arranged on the outer circumferential wall of the bearing inner ring 9, the rollaway I1, the rollaway I I, the rollaway I3 and the rollaway I V form a rollaway body which is matched with the cross cylindrical roller 5, the cross cylindrical roller 5 is arranged in the rollaway body when being arranged, the rollaway body, the bearing inner ring 9 and the bearing outer ring 10 are axially formed with deflection angles which are adjusted and selected within 30-55 degrees, two groups of outer circular arc grooves 7 are arranged on the outer circumferential wall of the bearing inner ring 9, two groups of inner circular arc grooves 8 are arranged on the inner circumferential wall of the bearing outer ring 10, and the rollaway profiles of the outer circular arc grooves 7 and the inner circular arc grooves 8 are larger than the rollaway grooves 6 are arranged on the outer circumferential wall of the bearing outer ring 10, so that the rollaway I1, the rollaway I2, the rollaway I3 and the rollaway I3 are capable of flowing in the inner circular arc grooves 7 and the inner circular arc grooves 7 can deform in the outer circular arc grooves of the rollaway 7 when being assembled.

In a specific installation process, according to the bearing structure with the built-in sealing type cross cylindrical roller 5 with the selectable contact angle, when the bearing is designed, the safety coefficient and the service life of each roller path can be calculated according to bearing load Fa, radial force Fr and overturning moment M provided by a user, if the safety coefficient and the service life of the roller path I1 and the roller path I II 3 are lower (the axial bearing capacity of the bearing is lower), and the safety coefficient and the service life of the roller path I I and the roller path I V4 are higher, the safety coefficient and the service life of the bearing can be improved by increasing the deflection angle of the roller path I1 and the roller path I II 3 (the deflection angle of the bearing roller path I1 and the roller path I II 3 is generally adjusted within 30-55 degrees), the specific deflection angle of the roller path can be selected according to the specific load provided by the user in a design stage, and the safety coefficient and the service life of 4 roller paths are close to each other, so that the aim of the targeted optimal design suitable for specific working conditions is achieved; in order to improve the axial bearing capacity of the bearing, four raceways can be rotated clockwise around the original axial direction by a certain angle (such as 10 degrees), so that the included angles between the raceways I1 and I II 3 and the axial force Fa are increased (55 degrees), the larger axial bearing capacity is achieved, the included angles between the raceways I I and I V and the axial force Fa are reduced (35 degrees), and the overturning moment bearing capacity is reduced. Similarly, the bearing overturning moment bearing capacity can be improved by anticlockwise rotation, and the bearing axial bearing capacity can be reduced.

The conventional turntable bearing adopts a single-lip axial seal as shown in the figure 5 of the specification, a certain height difference is needed between the inner ring and the outer ring for arranging the seal, when the equipment is required to be at a lower height, the axial dimension of the bearing required by a user is small, and a large bearing capacity is required, so that the general design cannot meet the requirement. According to the utility model, the arc grooves (the outer arc groove 7 and the inner arc groove 8) are formed on two sides of a gap between the inner ring and the outer ring of the bearing, the O-shaped sealing ring 6 is filled in the middle, the sealing ring 6 and the two rings are in small gap (or small interference) fit, the functions of dust prevention and grease leakage prevention are achieved, the outline of the outer arc groove 7 and the outline of the inner arc groove 8 are larger than those of the sealing ring 6, the deformation and flow of the sealing ring 6 during the assembly of the bearing are convenient (as shown in an attached figure 3 and an attached figure 4 of the specification), the arc groove on one side is shorter, the arc groove on one side is longer, the sealing ring 6 conveniently falls into the arc groove space opposite to the inner ring and the outer ring, and the position precision requirement of arc groove processing is reduced.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims

1. The utility model provides a sealed crossed cylindrical roller bearing of optional contact angle embeds, its characterized in that, including bearing inner race (9), bearing outer lane (10), sealing washer (6) and crossed cylindrical roller (5), set up raceway I (1) and raceway I I (2) on the interior circumference wall of bearing outer lane (10), set up raceway III (3) and raceway I V (4) on the exterior circumference wall of bearing inner lane (9), raceway I (1), raceway I I (2), raceway III (3) and raceway I V (4) four constitute the raceway body that the crossed cylindrical roller (5) of adaptation was installed, crossed cylindrical roller (5) install in the raceway body, raceway body and the axial of bearing inner lane (9), bearing outer lane (10) have a deflection angle, set up outer circular arc groove (7) on the exterior circumference wall of bearing inner lane (9), set up interior circular arc groove (8) on the interior circumference wall of bearing outer lane (10), sealing washer (6) install in outer circular arc groove (7) and interior circular arc groove (8).

2. The selectable contact angle built-in sealing type crossed cylindrical roller bearing according to claim 1, wherein the deflection angle is adjusted and selected between 30 and 55 degrees.

3. The cross cylindrical roller bearing with the built-in sealing type of the optional contact angle according to claim 1, wherein the groove profile of the outer circular arc groove (7) and the inner circular arc groove (8) is larger than the outer profile of the sealing ring (6), so that the sealing ring (6) can deform and flow in the outer circular arc groove (7) and the inner circular arc groove (8) during the assembly of the bearing.

4. A contact angle-selectable built-in sealed crossed cylindrical roller bearing according to claim 3, wherein the outer circular arc groove (7) and the inner circular arc groove (8) are correspondingly arranged, and the grooved profile of the outer circular arc groove (7) is larger than that of the inner circular arc groove (8).

5. A contact angle-selectable built-in sealed crossed cylindrical roller bearing according to claim 3, wherein the outer circular arc groove (7) and the inner circular arc groove (8) are correspondingly arranged, and the grooved profile of the outer circular arc groove (7) is smaller than that of the inner circular arc groove (8).

6. The alternative contact angle built-in sealing type crossed cylindrical roller bearing according to claim 1, wherein two sets of inner circular arc grooves (8) are formed on the inner circumferential wall of the bearing outer ring (10).

7. The alternative contact angle built-in sealing type crossed cylindrical roller bearing according to claim 1, wherein two sets of outer circular arc grooves (7) are formed on the outer circumferential wall of the bearing inner ring (9).