CN218564185U - Radial ball bearing assembly with different contact angles of inner and outer rings - Google Patents

Abstract

The utility model belongs to the technical field of bearing assembly manufacturing, concretely relates to radial ball bearing subassembly that inside and outside lasso contact angle is different, include radial ball bearing and install the outside casing at radial ball bearing, radial ball bearing includes inner circle, outer lane, holder and steel ball, the steel ball passes through the holder and keeps between inner circle and outer lane, and inner circle external diameter surface is provided with the inner circle channel, and outer lane internal diameter surface is provided with the outer lane channel, and the steel ball respectively with inner circle channel and outer lane channel rolling connection, the contact angle of inner circle channel and steel ball is greater than the contact angle of outer lane channel and steel ball; the shell is arranged outside the outer ring, and the shell is used for axially limiting the outer ring. The utility model discloses a radial ball bearing that inner circle, outer lane contact angle are different reduces casing axial displacement, and this bearing assembly axial bearing capacity is showing and is improving.

Description

Radial ball bearing assembly with different contact angles of inner and outer rings

Technical Field

The utility model belongs to the technical field of the bearing assembly is made, concretely relates to different radial ball bearing subassembly of inside and outside lasso contact angle.

Background

The reducer is widely applied to the fields of general machinery, engineering machinery, petrifaction and the like, and the bearing applied to the reducer has higher requirements on bearing capacity, service life and sealing property.

An existing radial ball bearing with a contact angle of 0 for an input shaft of a certain speed reducer has the following defects:

1. when the speed reducer runs, when the bearing is lubricated through the oil injection hole, the bearing can generate certain axial displacement, so that the phenomenon of leakage of lubricating oil at the sealing part of the sealing ring is caused, and through analysis, the phenomenon is caused because the axial clearance of the radial ball bearing with the contact angle of 0 is inconsistent, and the axial clearance of the radial ball bearing with the contact angle of 0 is not easy to adjust.

2. Certain axial force can exist in the running process of the speed reducer, the radial ball bearing with the contact angle of 0 has smaller axial bearing capacity, and the working condition of the speed reducer cannot be met.

Disclosure of Invention

According to the defect that above-mentioned prior art exists, the utility model aims at providing a radial ball bearing subassembly that interior outer ring contact angle is different guarantees sealed effect, improves bearing capacity.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a radial ball bearing assembly with different contact angles of inner and outer rings comprises a radial ball bearing and a shell arranged outside the radial ball bearing, wherein the radial ball bearing comprises an inner ring, an outer ring, a retainer and a steel ball, the steel ball is kept between the inner ring and the outer ring through the retainer, an inner ring channel is arranged on the outer diameter surface of the inner ring, an outer ring channel is arranged on the inner diameter surface of the outer ring, the steel ball is respectively in rolling connection with the inner ring channel and the outer ring channel, and the contact angle between the inner ring channel and the steel ball is larger than that between the outer ring channel and the steel ball; the shell is arranged outside the outer ring, and the shell is used for axially limiting the outer ring.

Furthermore, the contact angle between the outer ring channel and the steel ball is an outer ring contact angle alpha, the contact angle between the inner ring channel and the steel ball is an inner ring contact angle beta, and the difference range of the outer ring contact angle alpha and the inner ring contact angle beta is 3-7 degrees.

Further, the inner side surface of the shell is formed by connecting a limiting surface and a step surface which are arranged in a step shape, the limiting surface is in contact with the end surface of the outer ring to carry out axial limiting, the step surface radially extends to the inner diameter side of the radial ball bearing, and a gap is formed between the step surface and the end surface of the inner ring.

Further, the bearing assembly further comprises a shaft sleeve, the radial ball bearing is sleeved outside the shaft sleeve, and the shaft sleeve axially limits the inner ring.

Further, the housing includes a housing fitting portion for fitting the radial ball bearing and a housing extension portion extending in the axial direction, and the sleeve includes a sleeve fitting portion for fitting the radial ball bearing and a sleeve extension portion extending in the axial direction; the shell assembling portion and the shaft sleeve assembling portion are correspondingly arranged and assembled with a radial ball bearing, and the shell extending portion and the shaft sleeve extending portion are correspondingly arranged and in sealing fit.

Furthermore, the shell extension part is sleeved on the outer diameter surface of the shaft sleeve extension part, and a sealing ring is arranged between the shell extension part and the shaft sleeve extension part.

Further, be provided with oil storage tank, oil filler point and intercommunicating pore on the axle sleeve extension, the oil storage tank sets up the internal diameter side at the axle sleeve extension, oil filler point and intercommunicating pore communicate with the oil storage tank respectively, and the intercommunicating pore is connected oil storage tank and casing and is extended to radial ball bearing by casing inner space in.

Furthermore, the shaft sleeve axially limits the inner ring through the annular boss.

Further, the inner ring and the outer ring are both integral ferrules.

The beneficial effects of the utility model are that: the utility model discloses a radial ball bearing that inner circle, outer lane contact angle are different reduces casing axial displacement, and this bearing assembly axial bearing capacity is showing and is improving.

Drawings

FIG. 1 is a schematic view of a radial ball bearing assembly with different contact angles of inner and outer rings;

FIG. 2 is a schematic structural view of the radial ball bearing in FIG. 1;

in the figure: 1. the bearing comprises an inner ring, 2, an outer ring, 3, a retainer, 4, a steel ball, 5, a shell, 51, a limiting surface, 52, a step surface, 53, a shell assembling part, 54, a shell extending part, 6, a shaft sleeve, 61, a shaft sleeve assembling part, 62, a shaft sleeve extending part, 7, a sealing ring, 8, an oil storage tank, 9, an oil filling hole, 10, a communication hole, 11 and a radial ball bearing.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to the attached drawings 1-2, a radial ball bearing assembly with different contact angles of inner and outer rings comprises a radial ball bearing 11 and a shell 5 arranged outside the radial ball bearing 11, wherein the radial ball bearing 11 comprises an inner ring 1, an outer ring 2, a retainer 3 and a steel ball 4, the steel ball 4 is held between the inner ring 1 and the outer ring 2 through the retainer 3, an inner ring channel is arranged on the outer diameter surface of the inner ring 1, an outer ring channel is arranged on the inner diameter surface of the outer ring 2, the steel ball 4 is respectively in rolling connection with the inner ring channel and the outer ring channel, and the contact angle between the inner ring channel and the steel ball is larger than that between the outer ring channel and the steel ball; the casing 5 is installed outside the outer ring 2, and the casing 5 axially limits the outer ring 2.

Based on the technical scheme, it is noted that through calculation, the inner contact angle and the outer contact angle are different, the inner ring contact angle beta is larger than the outer ring contact angle alpha, and equal strength and approximately consistent service life of the inner ring 1 and the outer ring 2 are ensured. Under the condition of the same radial play, the radial ball bearing with the contact angle of 0 bears the limitation of the internal curvature, the axial play is not easy to adjust, and the axial play of the radial ball bearing with the inner and outer ring contact angles different is far smaller than that of the radial ball bearing with the contact angle of 0 through calculation. When the speed reducer operates, the axial displacement of the shell 5 is obviously reduced, the oil leakage phenomenon does not occur, the axial bearing capacity of the radial ball bearing is obviously improved, and the working condition of the speed reducer is met.

Furthermore, the contact angle between the outer ring channel and the steel ball is an outer ring contact angle alpha, the contact angle between the inner ring channel and the steel ball is an inner ring contact angle beta, and the difference range of the outer ring contact angle alpha and the inner ring contact angle beta is 3-7 degrees.

Based on the above technical solutions, it should be noted that the contact angle is determined according to the size of the bearing and the force applied, and the difference between the two contact angles is not constant, but is about 5 °.

Further, the inner side surface of the housing 5 is formed by connecting a limit surface 51 and a stepped surface 52 which are arranged in a stepped manner, the limit surface 51 is in contact with the end surface of the outer ring 2 to limit the axial direction, the stepped surface 52 extends to the inner diameter side of the radial ball bearing along the radial direction, and a gap is formed between the stepped surface 52 and the end surface of the inner ring 1. The gap between the stepped surface 52 and the end surface of the inner ring 1 reserves a space for grease to enter the bearing.

Furthermore, the bearing assembly further comprises a shaft sleeve 6, the radial ball bearing is sleeved outside the shaft sleeve, and the shaft sleeve is used for axially limiting the inner ring.

Further, the housing 5 includes a housing fitting portion 53 for fitting the radial ball bearing and a housing extension portion 54 extending in the axial direction, and the sleeve 6 includes a sleeve fitting portion 61 for fitting the radial ball bearing and a sleeve extension portion 62 extending in the axial direction; the housing assembling portion 53 is disposed corresponding to the sleeve assembling portion 61 and assembled with a radial ball bearing, and the housing extending portion 54 is disposed corresponding to the sleeve extending portion 62 and is in sealing engagement therewith.

Further, the housing extension 54 is sleeved on the outer diameter surface of the shaft sleeve extension 62, and a sealing ring 7 is arranged between the housing extension 54 and the shaft sleeve extension 62.

Further, a oil storage groove 8, an oil filling hole 9 and a communication hole 10 are arranged on the shaft sleeve extension part 62, the oil storage groove 8 is arranged on the inner diameter side of the shaft sleeve extension part 62, the oil filling hole 9 and the communication hole 10 are respectively communicated with the oil storage groove 8, and the communication hole 10 is connected with the oil storage groove 8 and the shell 5 and extends from the inner space of the shell to the inside of the radial ball bearing.

Further, the shaft sleeve 6 axially limits the inner ring 1 through an annular boss.

Further, the inner ring 1 and the outer ring 2 are both integral ferrules. The inseparable bearing is formed after the assembly, and the installation and the use of customers are convenient.

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", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and 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 implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. 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 application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The above list is only the preferred embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by the person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims (9)

1. The utility model provides a radial ball bearing subassembly that inside and outside lasso contact angle is different which characterized in that: the ball bearing comprises an annular ball bearing and a shell arranged outside the annular ball bearing, wherein the annular ball bearing comprises an inner ring, an outer ring, a retainer and a steel ball, the steel ball is kept between the inner ring and the outer ring through the retainer, an inner ring channel is arranged on the outer diameter surface of the inner ring, an outer ring channel is arranged on the inner diameter surface of the outer ring, the steel ball is respectively in rolling connection with the inner ring channel and the outer ring channel, and the contact angle between the inner ring channel and the steel ball is larger than that between the outer ring channel and the steel ball; the shell is arranged outside the outer ring, and the shell is used for axially limiting the outer ring.

2. A radial ball bearing assembly according to claim 1, wherein said inner and outer races have different contact angles, and wherein: the contact angle between the outer ring channel and the steel ball is an outer ring contact angle alpha, the contact angle between the inner ring channel and the steel ball is an inner ring contact angle beta, and the difference range of the outer ring contact angle alpha and the inner ring contact angle beta is 3-7 degrees.

3. A radial ball bearing assembly according to claim 1, wherein: the inner side surface of the shell is formed by connecting a limiting surface and a step surface which are arranged in a step shape, the limiting surface is in contact with the end surface of the outer ring to carry out axial limiting, the step surface radially extends to the inner diameter side of the radial ball bearing, and a gap is formed between the step surface and the end surface of the inner ring.

4. A radial ball bearing assembly according to claim 1, wherein said inner and outer races have different contact angles, and wherein: the radial ball bearing is sleeved outside the shaft sleeve, and the shaft sleeve is used for axially limiting the inner ring.

5. A radial ball bearing assembly according to claim 4, wherein: the shell comprises a shell assembling part for assembling the radial ball bearing and a shell extending part extending along the axial direction, and the shaft sleeve comprises a shaft sleeve assembling part for assembling the radial ball bearing and a shaft sleeve extending part extending along the axial direction; the shell assembly part and the shaft sleeve assembly part are correspondingly arranged and assembled with a radial ball bearing, and the shell extension part and the shaft sleeve extension part are correspondingly arranged and in sealing fit.

6. A radial ball bearing assembly according to claim 5, wherein the inner and outer races have different contact angles, the radial ball bearing assembly comprising: the shell extension part is sleeved on the outer diameter surface of the shaft sleeve extension part, and a sealing ring is arranged between the shell extension part and the shaft sleeve extension part.

7. A radial ball bearing assembly according to claim 5, wherein the inner and outer races have different contact angles, the radial ball bearing assembly comprising: be provided with oil storage tank, oil filler point and intercommunicating pore on the axle sleeve extension, the oil storage tank sets up the internal diameter side at the axle sleeve extension, oil filler point and intercommunicating pore communicate with the oil storage tank respectively, and the oil storage tank is connected to the intercommunicating pore and casing and by the casing inner space extend to radial ball bearing in.

8. A radial ball bearing assembly according to claim 4, wherein the inner and outer races have different contact angles, the radial ball bearing assembly comprising: the shaft sleeve carries out axial limiting on the inner ring through the annular boss.

9. A radial ball bearing assembly according to claim 1, wherein said inner and outer races have different contact angles, and wherein: the inner ring and the outer ring are both integrated ferrules.

Images