CN217926765U - Bearing retainer and self-aligning roller bearing for high-speed heavy load - Google Patents

Abstract

The utility model relates to a bearing technical field especially relates to a bearing retainer and high-speed for heavy load self-aligning roller bearing. The retainer comprises an annular retainer body, wherein the retainer body comprises an annular upper beam, an annular lower beam and a plurality of vertical beams which are connected and arranged between the lower end of the upper beam and the upper end of the lower beam, the vertical beams are uniformly distributed at intervals in the circumferential direction, each adjacent vertical beam, the upper beam and the lower beam are enclosed to form a pocket hole, a roller is arranged in the pocket hole, and a recess is formed in one circumferential side wall of the roller; the lower end face of the upper beam is provided with an arc protrusion in a downward extending mode, the upper end outer side of the pocket is located on the lower end face of the upper beam, and the arc protrusion can stretch into the concave cavity to lock the roller. Among the above-mentioned technical scheme, the outside of the both pocket hole of lower extreme off-plate side of the upper beam of holder is equipped with the arc protruding, and when the roller was packed in the pocket hole, this arc protruding can be imbedded in the cave of roller and lock it in the pocket hole, makes the bearing at high-speed operation in-process, and the roller still is locked tightly, has further strengthened roller stability.

Description

Bearing retainer and aligning roller bearing for high-speed heavy load

Technical Field

The utility model relates to a bearing technical field especially relates to a bearing retainer and high-speed for heavy load self-aligning roller bearing.

Background

The self-aligning roller bearing has large load capacity, can bear radial load, can bear axial load with bidirectional action, has good impact resistance, and generally has low allowable working rotating speed. In order to enable the self-aligning roller bearing to be applied in a scene of high rotating speed, the structure of the self-aligning roller bearing needs to be improved.

Disclosure of Invention

In order to solve the above problems, a first object of the present invention is to provide a bearing retainer, which can be filled with 1-2 more rollers than the existing retainer, thereby greatly enhancing the bearing capacity of the bearing with the retainer; in addition, the retainer can tightly lock the roller, so that the bearing can still keep stable under high-speed operation; a second object of the present invention is to provide a self-aligning roller bearing for high-speed heavy load, which has the above-mentioned bearing holder.

In order to achieve the above purpose, the utility model adopts the following technical scheme: including annular holder body, its characterized in that: the retainer body comprises an annular upper beam, an annular lower beam and a plurality of vertical beams which are connected and arranged between the lower end of the upper beam and the upper end of the lower beam, the vertical beams are uniformly distributed at intervals in the circumferential direction, a pocket is formed by enclosing each adjacent vertical beam, the upper beam and the lower beam, a roller is installed in the pocket, and a recess is formed in one circumferential side wall of the roller; the upper end outside downwardly extending who just is in the pocket on the lower terminal surface of upper beam is equipped with the arc protruding, the arc is protruding to be stretched into the pocket locks the roller.

Among the above-mentioned technical scheme, the outside in both pocket hole of the lower extreme off-plate side of the upper beam of holder is equipped with the arc protruding, and when the pocket hole was filled with the roller, this arc was protruding to be inserted in the cave of roller and locks it in the pocket hole, makes the bearing at high-speed operation in-process, and the roller still is tightly locked, has further strengthened roller stability. In addition, the arc bulge is arranged at the middle position of the upper end of the pocket relative to the pocket, so that when the arc bulge is pressed into the roller, the pulling force at each position outside the arc bulge can be balanced, and the phenomenon that the arc bulge is arranged at a position which is deviated from left to right and generates large extrusion to a certain position in the recess when the bearing runs at a high speed to cause over-rapid abrasion is prevented.

Preferably, a plurality of small arc concaves are arranged on the inner side of the arc bulge and connected with the arc bulge, and the small arc concaves support against the side wall of the roller. Among this technical scheme, the convex stability of arc not only can be strengthened in the concave setting of a plurality of minor arcs, and can be more convenient for withstand the lateral wall of roller behind the convex embedding pocket of arc, strengthen the stability of roller.

Preferably, a plurality of locking points are arranged in the pocket hole in the circumferential direction and can abut against the side wall of the roller to lock the roller relative to the retainer.

Preferably, the width of the inner end to the outer end of the vertical beam is gradually reduced, two side walls of the vertical beam are oblique arc surfaces, two first locking points which are longitudinally distributed are symmetrically arranged on the two side walls respectively, and the two first locking points are square and abut against the side walls of the rollers from the side.

Preferably, the upper end outside of underbeam upwards extends and is equipped with the chimb, the pocket hole founds on the chimb, on the chimb and be in the downthehole upwards extension of pocket is equipped with two second lock points, and two second lock points support the lower part of roller from the below.

Among the above-mentioned technical scheme, respectively arranged on the lateral wall of perpendicular roof beam and on the chimb that two lock points can fully support the lateral wall of roller by circumference and make the roller steady operation, and can reduce the friction between roller and the pocket inner wall, make the bearing obtain faster rotational speed. In addition, gaps are reserved among the rollers, the convex edges and the vertical beam side edges, so that the rollers can be lubricated more fully, a lubricating oil film is formed more easily, the rollers are protected better, and the service life of the bearing is prolonged.

Preferably, the upper end surfaces of the two second locking points form an arc surface. In the technical scheme, the upper end surface of the second locking point is an arc surface, so that the friction between the roller and the second locking point can be further reduced, and the rotating speed of the bearing is higher.

Preferably, the upper ends of the vertical beams are inclined outward and the pockets are inclined outward, both axial end surfaces of the rollers are filled toward the pockets, axial center lines of the rollers extend and intersect with a central axis of the cage body to form a central point, and the cage body is located below the central point. Among this technical scheme, the pocket slope sets up, and the roller slant is packed in the pocket, and the central point that its axial lead extends and the central axis of cage body is crossing is located the cage top, and this kind of new cage structure can make the raceway inclined plane at pocket place down more the slope then the area is big more, and the roller that packs then more, can strengthen the bearing capacity of bearing greatly.

Preferably, the lower end surface of the upper beam is an inclined surface with the inner end inclined upwards and is vertically connected with the upper end of the vertical beam, and the upper end surface of the convex edge is an inclined surface with the outer end inclined downwards and is in face-to-face connection with the lower end of the vertical beam; the width of the upper end face of the convex edge is the same as the thickness of the vertical beam; the inner side surface of the upper beam, the inner side surface of the vertical beam and the inner side surface of the convex edge are positioned on the same inclined plane. In the technical scheme, although the rolling way surface inclines downwards, the more the loaded rollers are, the larger the tension force applied to the vertical beam is and the better the inner ring and the outer ring of the bearing are matched, and the inclined pocket holes are formed under the condition that 1-2 rollers are loaded in the scheme, so that the bearing can obtain larger bearing capacity, the structure of the retainer is relatively stable, and the high-speed operation of the bearing is realized.

Preferably, the outer edge of the lower end of the lower beam is in arc surface transition with the outer wall of the lower beam. In the technical scheme, the cambered surface transition between the outer edge of the lower end of the lower beam and the outer wall of the lower beam can reduce the stress borne by the vertical beam after the vertical beam is inclined and the tension borne by the lower beam.

A self-aligning roller bearing for high speed and heavy load comprises a bearing inner ring, a bearing outer ring coaxially arranged on the outer side of the bearing inner ring, and a middle retainer ring axially matched with the bearing outer ring and the bearing inner ring in a clearance fit manner; the method is characterized in that: the bearing retainer is arranged between the bearing inner ring and the bearing outer ring in the radial direction.

Drawings

Fig. 1 is a half-sectional view of a bearing retainer.

Fig. 2 is a schematic cross-sectional view of a bearing retainer.

Fig. 3 is a schematic cross-sectional view of a roller of a bearing cage.

Fig. 4 is a schematic cross-sectional view of a vertical beam of a bearing retainer.

Fig. 5 is a schematic cross-sectional view of a self-aligning roller bearing for high-speed heavy loading.

Fig. 6 is a schematic cross-sectional view of a bearing outer ring of a self-aligning roller bearing for high-speed heavy loading.

Fig. 7 is a schematic cross-sectional view of a bearing inner race of a self-aligning roller bearing for high-speed and heavy-duty use.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The first embodiment is as follows:

the bearing retainer shown in fig. 1 to 4 comprises an annular retainer body 100, wherein the retainer body 100 comprises an annular upper beam 1, an annular lower beam 2 and a plurality of vertical beams 3 which are connected and arranged between the lower end of the upper beam 1 and the upper end of the lower beam 2, the vertical beams 3 are uniformly distributed at intervals in the circumferential direction, a pocket 4 is formed by enclosing every adjacent vertical beam 3 with the upper beam 1 and the lower beam 2, a roller 5 is arranged in the pocket 4, and a recess 6 is formed on one circumferential side wall of the roller 5; the lower end face of the upper beam 1 is provided with an arc protrusion 7 in a downward extending mode, the upper end outer side of the pocket 4 is located on the lower end face of the upper beam, and the arc protrusion 7 can extend into the concave cavity 6 to lock the roller 5. In the technical scheme, the arc-shaped protrusions 7 are arranged on the outer side of the pocket 4 on the outer side of the lower end face of the upper beam 1 of the retainer, when the rollers 5 are filled in the pocket 4, the arc-shaped protrusions 7 can be embedded into the concave cavities 6 of the rollers 5 to lock the rollers in the pocket 4, so that the rollers 5 are still tightly locked in the high-speed running process of the bearing, and the stability of the rollers 5 is further enhanced. In addition, the arrangement of the arc protrusion 7 is in the middle position of the upper end of the pocket 4, when the arc protrusion 7 is pressed into the roller 5, the pulling force at each position outside the arc protrusion 7 can be balanced, and the phenomenon that the arrangement position of the arc protrusion 7 is deviated from left and right to produce large extrusion on a certain position in the recess 6 when the bearing runs at high speed to cause over-quick abrasion is avoided.

Furthermore, a plurality of small arc concaves 8 are arranged on the inner side of the arc convex 7 and connected with the arc convex 7, and the small arc concaves 8 prop against the side wall of the roller 5. Among this technical scheme, the stability of the protruding 7 of arc not only can be strengthened in the setting of a plurality of little arcs concave 8, and can be more convenient for withstand the lateral wall of roller 5 behind the protruding 7 embedding caves 6 of arc, strengthen roller 5's stability.

Further, a plurality of locking points are provided in the inner periphery of the pocket 4 to be able to abut against the side walls of the rollers 5 to lock the rollers 5 relative to the cage.

Further, the width from the inner end to the outer end of the vertical beam 3 is gradually reduced, two side walls of the vertical beam 3 are oblique arc surfaces, two first locking points 9 which are longitudinally distributed are symmetrically arranged on the two side walls respectively, and the two first locking points 9 are square and abut against the side walls of the rollers 5 from the side.

Further, the upper end outside of underbeam 2 upwards extends and is equipped with chimb 10, pocket 4 founds on the chimb 10, on the chimb 10 and be in the inside upward extension in pocket 4 is equipped with two second lock points 11, and two second lock points 11 support the lower part of roller 5 from the below.

Among the above-mentioned technical scheme, respectively arranged two lock points on the lateral wall of erecting roof beam 3 and on chimb 10 and can fully supported the lateral wall of roller 5 by circumference and make roller 5 steady operation, and can reduce the friction between roller 5 and the 4 inner walls in pocket, make the bearing obtain faster rotational speed. In addition, the roller 5, the convex edge 10 and the side edge of the vertical beam 3 are separated by gaps, so that the roller 5 is lubricated more fully, a lubricating oil film is formed more easily, the roller 5 is protected better, and the service life of the bearing is prolonged.

Further, the upper end surfaces of the two second locking points 11 are cambered surfaces. In this technical scheme, the upper end face of second lock point 11 is the cambered surface can further reduce roller 5 and the friction between it for the bearing rotational speed is faster.

Further, the upper ends of the vertical beams 3 are inclined outwards and the pockets 4 are inclined outwards, the two axial end faces of the rollers 5 are filled towards the pockets 4, the axial lines of the rollers 5 extend and intersect with the central axis of the cage body 100 to form a central point 12, and the cage body 100 is located below the central point 12. In the technical scheme, the pocket 4 is obliquely arranged, the rollers 5 are obliquely filled in the pocket 4, the central point of the intersection of the axial lead extension and the central axis of the retainer body is positioned above the retainer, the novel retainer structure can enable the inclined surface of the roller path where the pocket 4 is positioned to be more downward inclined, the area is larger, the more the rollers 5 are filled, and the bearing capacity of the bearing can be greatly enhanced.

Furthermore, the lower end surface of the upper beam 1 is an inclined surface with the inner end inclined upwards and is vertically connected with the upper end of the vertical beam 3, and the upper end surface of the convex edge 10 is an inclined surface with the outer end inclined downwards and is in face-to-face joint with the lower end surface of the vertical beam 3; the width of the upper end face of the convex edge 10 is the same as the thickness of the vertical beam 3; the inner side surface of the upper beam 1, the inner side surface of the vertical beam 3 and the inner side surface of the convex edge 10 are positioned on the same inclined plane. In the technical scheme, although the rolling way surface inclines downwards, the more the loaded rollers 5 are, the larger the tension force applied to the vertical beam 3 is and the inner ring and the outer ring of the bearing are not matched well, and the inclined pocket holes 4 are arranged under the condition that 1-2 rollers are loaded in the scheme, so that the bearing can obtain larger bearing capacity, the structure of the retainer is relatively stable, and the high-speed operation of the bearing is realized.

Further, the outer edge of the lower end of the lower beam 2 is in arc transition with the outer wall of the lower beam 2. In the technical scheme, the cambered surface transition between the outer edge of the lower end of the lower beam 2 and the outer wall of the lower beam 2 can reduce the stress borne by the vertical beam 3 after the vertical beam is inclined and the tension borne by the lower beam 2.

In the embodiment, the bearing retainer comprises an upper beam 1, a lower beam 2 and vertical beams 3, wherein a pocket 4 is formed between each adjacent vertical beam 3 and the upper beam 1 and the lower beam 2, and a roller 5 is arranged in the pocket 4. A plurality of locking points are arranged in the inner circumferential direction of the pocket 4, friction between the roller 5 and the inner wall of the pocket 4 can be reduced, and the rotating speed of the roller 5 is improved. In addition, the lower end surface of the upper beam 1 is provided with an arc bulge 7, and the arc bulge 7 can be embedded into the concave groove 6 of the roller 5 to prevent the roller 5 from being separated, so that the roller 5 is kept stable.

In addition, the retainer has a novel structure, the vertical beam 3 is obliquely arranged to enable the raceway surface to be inclined downwards to form an inclined surface, 1-2 rollers can be additionally arranged on the retainer in the structure compared with the conventional retainer, and the bearing capacity of the bearing is increased.

Example two:

a self-aligning roller bearing for high-speed heavy load comprises a bearing inner ring 13, a bearing outer ring 14 coaxially arranged outside the bearing inner ring 13, a middle retainer ring 15 axially matched with the bearing outer ring 14 and the bearing inner ring 13 in a clearance fit mode, and a bearing retainer in the first embodiment: the bearing retainer is radially arranged between the bearing inner ring 13 and the bearing outer ring 14.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (10)

1. A bearing cage comprising an annular cage body (100), characterized in that: the retainer body (100) comprises an annular upper beam (1), an annular lower beam (2) and a plurality of vertical beams (3) which are connected and arranged between the lower end of the upper beam (1) and the upper end of the lower beam (2), the vertical beams (3) are uniformly distributed at intervals in the circumferential direction, a pocket (4) is formed by enclosing each adjacent vertical beam (3) with the upper beam (1) and the lower beam (2), a roller (5) is arranged in the pocket (4), and a recess (6) is formed in one circumferential side wall of the roller (5); the lower end face of the upper beam (1) is provided with an arc protrusion (7) in a downward extending mode, the upper end outer side of the pocket (4) is located on the upper end face of the upper beam, and the arc protrusion (7) can stretch into the concave cavity (6) to lock the roller (5).

2. A bearing retainer according to claim 1, wherein: the inner side of the arc protrusion (7) is connected with the arc protrusion (7) and is provided with a plurality of small arc recesses (8), and the small arc recesses (8) are supported on the side wall of the roller (5).

3. A bearing retainer according to claim 1, wherein: the inner periphery of the pocket (4) is provided with a plurality of locking points which can abut against the side wall of the roller (5) to lock the roller (5) relative to the retainer.

4. A bearing retainer according to claim 2, wherein: the width from the inner end to the outer end of the vertical beam (3) is gradually reduced, the two side walls of the vertical beam (3) are oblique arc surfaces, two first lock points (9) which are longitudinally distributed are symmetrically arranged on the two side walls respectively, and the two first lock points (9) are square and abut against the side wall of the roller (5) from the side.

5. A bearing retainer according to claim 2, wherein: the upper end outside of underbeam (2) upwards extends and is equipped with chimb (10), pocket (4) are established on chimb (10), on chimb (10) and be in pocket (4) upwards extend and be equipped with two second lock points (11), and two second lock points (11) support the lower part of roller (5) from the below.

6. A bearing retainer according to claim 5, wherein: the upper end surfaces of the two second locking points (11) are cambered surfaces.

7. A bearing retainer according to claim 5, wherein: the upper end of erecting roof beam (3) inclines to the outside and makes pocket (4) incline to the outside setting, the axial both ends face of roller (5) packs towards pocket (4), the axial lead extension of roller (5) and the crossing formation central point (12) of the central axis with holder body (100), holder body (100) are in the below of central point (12).

8. A bearing retainer according to claim 7, wherein: the lower end surface of the upper beam (1) is an inclined surface with the inner end inclined upwards and is vertically connected with the upper end of the vertical beam (3), and the upper end surface of the convex edge (10) is an inclined surface with the outer end inclined downwards and is butted with the lower end surface of the vertical beam (3); the width of the upper end face of the convex edge (10) is the same as the thickness of the vertical beam (3); the inner side surface of the upper beam (1), the inner side surface of the vertical beam (3) and the inner side surface of the convex edge (10) are positioned on the same inclined plane.

9. A bearing retainer according to claim 8, wherein: the outer edge of the lower end of the lower beam (2) is in arc surface transition with the outer wall of the lower beam (2).

10. A self-aligning roller bearing for high speed and heavy load comprises a bearing inner ring (13), a bearing outer ring (14) coaxially arranged at the outer side of the bearing inner ring (13), and a middle retainer ring (15) axially matched with the bearing outer ring (14) and the bearing inner ring (13) in a clearance fit manner; the method is characterized in that: further comprising a bearing cage according to any of claims 1 to 9, which is arranged radially between the inner bearing ring (13) and the outer bearing ring (14).

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