WO2018223984A1

WO2018223984A1 - Special bearing with high sealing performance used for roller

Info

Publication number: WO2018223984A1
Application number: PCT/CN2018/090103
Authority: WO
Inventors: 赵红平; 晏胜国
Original assignee: 赵红平
Priority date: 2017-06-07
Filing date: 2018-06-06
Publication date: 2018-12-13
Also published as: CN107255116A

Abstract

A special bearing with high sealing performance used for a roller comprises a bearing inner ring (100), a bearing outer ring (200), a cage (300) disposed between the bearing inner ring (100) and the bearing outer ring (200), and a plurality of balls (400) disposed between the bearing inner ring (100) and the bearing outer ring (200) and located in ball pockets of the cage (300). The special bearing further comprises a first seal (500) detachably mounted on an outer end surface of the bearing inner ring (100). The first seal (500) extends radially, covers an outer end surface of the bearing outer ring (200), and only minimally contacts with the outer end surface of the bearing outer ring (200). The outer end surface of the bearing is fully sealed by the first seal (500), eliminating the need for a conventional complex high cost seal, avoiding leakage of grease and preventing moisture and dust from entering a working surface of the bearing, thereby ensuring normal operation of the bearing under a range of working conditions.

Description

Roller special bearing with high sealing performance

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201710424277.0, entitled "A High Sealing Roller Bearing", issued on June 07, 2017, the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present application relates to the field of bearing technology, and in particular to a roller-specific bearing with high sealing performance.

Background technique

The conventional roller special bearing comprises a bearing inner ring, a bearing outer ring, a cage disposed between the bearing inner ring and the bearing outer ring, a plurality of ball pockets disposed in the cage of the cage and located in the bearing inner ring and the bearing outer ring The ball between the seals and the seals disposed between the inner ring of the bearing and the outer ring of the bearing. The main applications of the special bearings for the rollers are in the high speed of the general industrial market, the rotation of the inner ring and the application environment are not easily polluted. However, the conventional roller-specific bearings have the following disadvantages: 1. The application is not suitable for the rotation of the outer ring, the grease is easy to leak; 2. The additional seal or skeleton seal is required, and the overall manufacturing cost of the roller is increased; 3. External The labyrinth or other seals increase the damping and reduce the running efficiency of the bearing. 4. If the external extra seal is not used, the bearing is directly exposed to the atmosphere, and the existing seal can not protect the bearing end face, the bearing steel is easy to produce. Rust, affecting the normal operation of the bearing.

To this end, the applicant has made useful explorations and attempts to find a solution to the above problems, and the technical solution to be introduced below is generated in this context.

Summary of the invention

The technical problem to be solved by the present application is to provide a high-sealing roller-specific bearing for the deficiencies of the prior art.

The technical problem solved by the present application can be implemented by the following technical solutions:

The utility model relates to a bearing with a high sealing capacity, comprising a bearing inner ring, a bearing outer ring, a cage disposed between the bearing inner ring and the bearing outer ring, and a plurality of bearings disposed on the bearing inner ring and the bearing outer ring And a ball located between the ball pockets of the retainer, further comprising a first sealing member detachably mounted on an outer end surface of the inner ring of the bearing, the first sealing member along the diameter The outer end surface of the bearing outer ring is extended and covered, and the first sealing member and the outer end surface of the bearing outer ring are hardly brought into contact.

In a preferred embodiment of the present application, an annular axial lip is disposed on an end surface of the first sealing member facing the bearing inner ring, and an annular lip is formed on an outer end surface of the bearing inner ring. The annular axial lip of the first seal is snapped into an annular lip formed on the outer end surface of the inner race of the bearing.

In a preferred embodiment of the present application, a second seal is disposed on the inner end face between the bearing inner ring and the bearing outer ring.

In a preferred embodiment of the application, the cage is made of engineering plastic.

In a preferred embodiment of the present application, the first sealing member is composed of a skeleton and a sealing ring coated on the skeleton, and the sealing ring is formed by a high temperature extrusion injection molding process, and the sealing ring is Made from the following combinations of raw materials, by weight:

Since the above technical solution is adopted, the beneficial effects of the present application are:

1. The special bearing for the roller of the present application cancels the traditional complicated high-cost sealing, and the first sealing member is used to completely seal the outer end surface of the bearing to prevent the grease from leaking and prevent moisture and dust from entering the working surface of the bearing, ensuring The bearings operate normally under various working conditions;

2. Since there is almost no contact between the first sealing member and the outer end surface of the bearing outer ring, when the roller is running, the bearing outer ring rotates and the bearing inner ring is stationary, which can effectively reduce the overall damping;

3, by adding a hygroscopic antistatic agent, which has a certain moisture absorption effect, can absorb the moisture in the air, reduce the surface resistance of the first sealing member, so that the surface resistance of the first sealing member is controlled at 6-8 of 10 Between the powers, it has good anti-static properties. At the same time, the first seal also fully meets the requirements of flame retardant and explosion-proof working conditions.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present application, and other drawings can be obtained according to the drawings without any creative work for those skilled in the art.

Figure 1 is a schematic view showing the structure of the present application when it is mounted on a roller.

detailed description

In order to make the technical means, creative features, achievement goals and effects achieved by the present application easy to understand, the present application will be further described below in conjunction with specific illustrations.

Referring to Figure 1, there is shown a highly sealed roller-specific bearing comprising a bearing inner ring 100, a bearing outer ring 200, a cage 300 disposed between the bearing inner ring 100 and the bearing outer ring 200. And a plurality of balls 400 disposed between the bearing inner ring 100 and the bearing outer ring 200 and located within the pocket of the cage 300. The cage 300 is made of engineering plastic to reduce friction and improve lubrication.

A first sealing member 500 is detachably mounted on an outer end surface of the bearing inner ring 100. The first sealing member 500 extends in the radial direction and covers the outer end surface of the bearing outer ring 200, and the first sealing member 500 and the bearing Little contact is formed between the outer end faces of the outer ring 200.

An annular axial lip 510 is disposed on the end surface of the first sealing member 500 facing the bearing inner ring 100. An annular lip 110 is formed on the outer end surface of the bearing inner ring 100, and the annular axial lip 510 of the first sealing member 500 is inserted. It is connected to the annular lip 110 formed on the outer end surface of the bearing inner ring 100.

In order to improve the overall sealing of the bearing, a second seal 600 is disposed on the inner end surface between the bearing inner ring 100 and the bearing outer ring 200.

The first seal member 500 is composed of a skeleton and a seal ring coated on the skeleton, which is formed by a high temperature extrusion injection molding process.

Example 1

The seal is made up of the following combinations of raw materials, by weight:

The surface resistance of the first sealing member 500 is at the sixth power of 10, so that the first sealing member 500 has good antistatic performance while having good flame retardant performance.

Example 2

The seal is made up of the following combinations of raw materials, by weight:

The surface resistance of the first sealing member 500 is at the seventh power of 10, so that the first sealing member 500 has good antistatic performance while having good flame retardant performance.

Example 3

The seal is made up of the following combinations of raw materials, by weight:

The surface resistance of the first sealing member 500 is 10 7.5 volts, so that the first sealing member 500 has good antistatic performance while having good flame retardant performance.

The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the foregoing embodiments, and the description of the embodiments and the description are only to explain the principles of the present application. Various changes and modifications are intended to fall within the scope of the appended claims. The scope of the claims is defined by the appended claims and their equivalents.

Claims

The utility model relates to a bearing with a high sealing capacity, comprising a bearing inner ring, a bearing outer ring, a cage disposed between the bearing inner ring and the bearing outer ring, and a plurality of bearings disposed on the bearing inner ring and the bearing outer ring And a ball located between the ball pockets of the retainer, further comprising a first sealing member detachably mounted on an outer end surface of the inner ring of the bearing, the first sealing member along the diameter The outer end surface of the bearing outer ring is extended and covered, and the first sealing member and the outer end surface of the bearing outer ring are hardly brought into contact.
A high-sealing roller-specific bearing according to claim 1, wherein an annular axial lip is disposed on an end surface of said first seal toward said bearing inner ring, said bearing inner ring An annular lip is formed on the outer end surface, and the annular axial lip of the first sealing member is engaged in the annular lip formed on the outer end surface of the inner ring of the bearing.
The high-sealing roller-dedicated bearing according to claim 1, wherein a second seal member is provided on an inner end surface between the bearing inner ring and the bearing outer ring.
The high-tightness roller-type bearing according to claim 1, wherein the holder is made of an engineering plastic.
The high-tightness roller-type bearing according to any one of claims 1 to 4, wherein the first seal member is composed of a skeleton and a seal ring coated on the skeleton, the seal The rings are made by a high temperature extrusion injection molding process, which is made up of the following combinations of raw materials, by weight: