CN213206324U

CN213206324U - Self-aligning roller bearing with inner ring

Info

Publication number: CN213206324U
Application number: CN202021304748.8U
Authority: CN
Inventors: 张宝中
Original assignee: Shandong Huagong Bearing Co Ltd
Current assignee: Shandong Huagong Bearing Co Ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-05-14
Anticipated expiration: 2030-07-07

Abstract

The utility model discloses a roller bearing with inner circle aligning belongs to the mechanical equipment field, including the outer lane, be located the inside inner circle of outer lane, be provided with double-row rolling device between outer lane and inner circle, the interior terminal surface of outer lane is circular-arc, the outer terminal surface of inner circle is the protruding and bellied arcwall face that is of center pin, set up a rolling device between the arcwall face that wherein one side of outer lane and inner circle is low, set up another rolling device between the arcwall face that is low of the opposite side of outer lane and inner circle, every rolling device include with outer lane and inner circle arcwall face complex rolling element and holder. The radial load is improved by adopting the non-middle retainer ring, and the friction of the bearing when rotating is reduced by adopting the roller self-guiding design. The double-row roller path greatly reduces the damage of locking and sintering of the bearing caused by the blocking of the retainer and the rolling body under the impact load, the retainer cannot interfere with each other in the rotating process by adopting the double-row retainer, and the rolling body and the retainer cannot be blocked due to partial dust.

Description

Self-aligning roller bearing with inner ring

Technical Field

The utility model belongs to the technical field of mechanical equipment, a have inner circle aligning roller bearing is related to.

Background

Roller bearings are one type of rolling bearings, and are one of the components widely used in modern machinery. It relies on rolling contact between the primary elements to support the rotating parts. Roller bearings are now mostly standardized. The roller bearing has the advantages of small moment required by starting, high rotation precision, convenience in selection and the like.

Roller bearings rely on rolling contact between primary parts to support rotating parts. Different roller bearings may be subjected to different radial and axial forces. However, the roller bearing on the market at present has the defects of damage to locking and sintering of the bearing due to blocking of the retainer and the rolling body under impact load, low rotating speed, low load, poor impact resistance, short service life of the bearing and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the utility model aims to provide a roller bearing with inner ring self-aligning. Compared with the prior art, the utility model has the following outstanding advantages and positive effects; the bearing adopts the middle retainer ring-free structure, improves the radial load, and reduces the friction of the bearing when the bearing rotates due to the adoption of the roller self-guiding design. The double-row roller path and the roller double-guide retainer are adopted, and double-row roller path guide is adopted, so that the damage of locking and sintering of the bearing due to the fact that the retainer and the rolling body are clamped under impact load is greatly reduced. The retainer is made of plastic, so that the lubricating effect is good, the noise is low, the tensile strength is high, and the abrasion is small.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an inner circle self-aligning roller bearing has, includes the outer lane, is located the inside inner circle of outer lane be provided with the biserial rolling device between outer lane and the inner circle, the interior terminal surface of outer lane is circular-arcly, the outer terminal surface of inner circle is the protruding and bellied both sides of center pin and is low arcwall face, set up a rolling device between the arcwall face that wherein one side of outer lane and inner circle is low set up another rolling device between the arcwall face that the opposite side of outer lane and inner circle is low, every row rolling device include with outer lane and inner circle arcwall face complex rolling element and be used for supporting the holder of rolling element.

Preferably, the arc-shaped surfaces located at the two lower sides of the inner ring are arranged in a convex manner with respect to the central axis.

Preferably, the double-row rolling device is arranged symmetrically with respect to a central axis protrusion on the inner ring.

Preferably, a plurality of equally divided oil holes are provided in the outer ring.

Preferably, the outer end surface of the outer ring and the inner end surface of the inner ring are both selected to be arc-shaped.

Preferably, the rolling elements are of asymmetrical design, the curvature of the rolling elements being smaller than the curvature of the low arc-shaped surface on the inner ring.

Preferably, the holder is a plastic holder.

The outer ring adopts a plurality of equant oil filler points, the size of the oil filler point is large, the deep oil filler point ensures sufficient lubrication of lubricating grease, high temperature cannot be generated when the bearing is used, the service life is prolonged, and the downtime is reduced. The inner ring is provided with the central shaft bulge, two raised sides of the inner ring are low arc-shaped surfaces, the double-row roller paths are installed in a matched mode with the low arc-shaped surfaces of the two sides, the rolling bodies are guaranteed not to interfere with each other when the rolling bodies rotate, the rolling bodies are guided to rotate all the time by the central shaft bulge, and the phenomenon of skew cannot occur. The rolling body adopts asymmetric design, the curvature is smaller than that of the low arc-shaped surface on the inner ring, the contact area is small, the temperature rise of the bearing is slow, and the service life is prolonged. The pressure angle is larger than the rotating aligning angle, so that the rolling body does not slip, and the normal rotation of the bearing is ensured. The retainer adopts the biserial design, mutual noninterference, and this kind of retainer's stretch-proofing nature is strong, and antidetonation, antifriction nature are good, and special design makes the rolling element rotate in the exact position that keeps all the time, even there is a damage, can also continue to maintain a period work. The retainer is made of plastic, so that the lubricating effect is good, the noise is low, the tensile strength is high, and the abrasion is small.

The utility model discloses there is following beneficial effect:

1. the outer ring adopts a plurality of equant oil filler points, the size of the oil filler point is large, the deep oil filler point ensures sufficient lubrication of lubricating grease, high temperature cannot be generated when the bearing is used, the service life is prolonged, and the downtime is reduced.

2. The inner ring adopts the arc surface that the center shaft is protruding and protruding both sides are low, and the double-row raceway is installed with the arc surface cooperation that both sides are low, when guaranteeing that the rolling element is rotatory, the rolling element does not interfere each other, and the rolling element is being rotated by the protruding guide of center shaft all the time, can not take place crooked phenomenon.

3. The rolling body adopts asymmetric design, the curvature is smaller than that of the low arc-shaped surface on the inner ring, the contact area is small, the temperature rise of the bearing is slow, and the service life is prolonged. The pressure angle is larger than the rotating aligning angle, so that the rolling body does not slip, and the normal rotation of the bearing is ensured.

4. The retainer adopts the biserial design, mutual noninterference, and this kind of retainer's stretch-proofing nature is strong, and antidetonation, antifriction nature are good, and special design makes the rolling element rotate in the exact position that keeps all the time, even there is a damage, can also continue to maintain a period work.

5. The retainer is made of plastic, so that the lubricating effect is good, the noise is low, the tensile strength is high, and the abrasion is small.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a self-aligning roller bearing with an inner ring.

In the figure: 1. outer ring, 2, inner ring, 3, protrusion, 4, rolling body, 6 and retainer.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Embodiment 1, as shown in fig. 1, a self-aligning roller bearing with an inner ring includes an outer ring 1 and an inner ring 2 located inside the outer ring 1, a double-row rolling device is provided between the outer ring 1 and the inner ring 2, an inner end surface of the outer ring 1 is arc-shaped, an outer end surface of the inner ring 2 is a central shaft protrusion 3, two sides of the protrusion 3 are low arc-shaped surfaces, a row of rolling devices is provided between the low arc-shaped surfaces on one side of the outer ring 1 and the inner ring 2, another row of rolling devices is provided between the low arc-shaped surfaces on the other side of the outer ring 1 and the inner ring 2, and each row of rolling devices includes a rolling element 4 engaged with the arc-shaped surfaces of the outer ring 1 and the inner ring 2 and a retainer 6.

In this embodiment, the arc-shaped surfaces located at the two lower sides of the inner ring 2 are symmetrically arranged with respect to the central shaft protrusion 3.

In this embodiment, the double row rolling devices are symmetrically arranged with respect to the central axis protrusion 3 on the inner ring 2.

In this embodiment, a plurality of equally divided oil holes are provided in the outer ring 1.

In this embodiment, the outer end surface of the outer ring 1 and the inner end surface of the inner ring 2 are both selected to be arc-shaped.

In the present exemplary embodiment, the rolling elements 4 are of asymmetrical design, the curvature of the rolling elements 4 being smaller than the curvature of the low arc-shaped surface on the inner ring 2.

In this embodiment, the holder 6 is a plastic holder.

The outer ring adopts a plurality of equant oil filler points, the size of the oil filler point is large, the deep oil filler point ensures sufficient lubrication of lubricating grease, high temperature cannot be generated when the bearing is used, the service life is prolonged, and the downtime is reduced. The inner ring is provided with the central shaft bulge, two raised sides of the inner ring are low arc-shaped surfaces, the double-row roller paths are installed in a matched mode with the low arc-shaped surfaces of the two sides, the rolling bodies are guaranteed not to interfere with each other when the rolling bodies rotate, the rolling bodies are guided to rotate all the time by the central shaft bulge, and the phenomenon of skew cannot occur. The rolling body adopts asymmetric design, the curvature is smaller than that of the low arc-shaped surface on the inner ring, the contact area is small, the temperature rise of the bearing is slow, and the service life is prolonged. The pressure angle is larger than the rotating aligning angle, so that the rolling body does not slip, and the normal rotation of the bearing is ensured. The retainer adopts the biserial design, mutual noninterference, and this kind of retainer's stretch-proofing nature is strong, and antidetonation, antifriction nature are good, and special design makes the rolling element rotate in the exact position that keeps all the time, even there is a damage, can also continue to maintain a period work.

Compared with the prior art, the utility model has the following outstanding advantages and positive effects; the bearing adopts the middle retainer ring-free structure, improves the radial load, and reduces the friction of the bearing when the bearing rotates due to the adoption of the roller self-guiding design. The double-row roller path and the roller double-guide retainer are adopted, and double-row roller path guide is adopted, so that the damage of locking and sintering of the bearing due to the fact that the retainer and the rolling body are clamped under impact load is greatly reduced. The retainer is made of plastic, so that the lubricating effect is good, the noise is low, the tensile strength is high, and the abrasion is small.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Besides the technical features described in the specification, other technical features are known to those skilled in the art, and further description of the other technical features is omitted here in order to highlight the innovative features of the present invention.

Claims

1. A self-aligning roller bearing with an inner ring is characterized in that: comprises an outer ring (1) and an inner ring (2) positioned in the outer ring (1), wherein a double-row rolling device is arranged between the outer ring (1) and the inner ring (2), the inner end surface of the outer ring (1) is arc-shaped, the outer end surface of the inner ring (2) is a central shaft bulge (3), two sides of the bulge (3) are low arc-shaped surfaces, a row of rolling devices are arranged between the lower arc-shaped surfaces of one side of the outer ring (1) and the inner ring (2), another row of rolling devices are arranged between the lower arc-shaped surfaces of the other sides of the outer ring (1) and the inner ring (2), each row of rolling devices comprises a rolling body (4) matched with the arc-shaped surfaces of the outer ring (1) and the inner ring (2) and a retainer (6) used for supporting the rolling body (4), the rolling body (4) is designed asymmetrically, and the curvature of the rolling body (4) is smaller than that of a low arc-shaped surface on the inner ring (2); a plurality of equally divided oil injection holes are arranged on the outer ring (1).

2. A self-aligning roller bearing with an inner ring according to claim 1, wherein: the arc-shaped surfaces which are positioned at the two lower sides of the inner ring (2) are symmetrically arranged relative to the central shaft bulge (3).

3. A self-aligning roller bearing with an inner ring according to claim 2, wherein: the double-row rolling device is symmetrically arranged relative to the central shaft bulge (3) on the inner ring (2).

4. A self-aligning roller bearing with an inner ring according to claim 1, wherein: the outer end face of the outer ring (1) and the inner end face of the inner ring (2) are both selected to be arc-shaped.

5. A self-aligning roller bearing with an inner ring according to claim 1, wherein: the retainer (6) is a plastic retainer.