Double-row self-aligning roller bearing for continuous casting machine

Abstract

The invention relates to a double-row self-aligning roller bearing, in particular to a double-row self-aligning roller bearing for a continuous casting machine. The problem that a bearing on a continuous casting machine is poor in lubrication under the working conditions of large load, high temperature and much dust is solved. The bearing comprises an outer ring, an inner ring, a rolling body, a guide ring and two retainers. A plurality of oil holes are formed in the circumferential surface of the outer ring and the circumferential surface of the inner ring in a circumferential array manner, so that a rolling body and a raceway of the bearing can be in contact with lubricating oil at the shortest distance and are further better lubricated, the oil holes can better store the lubricating oil, and the lubricating oil is continuously consumed, so that the service life of the bearing is prolonged. Lubricating oil in the oil holes can supplement the raceway and the rolling body in time, and it is guaranteed that the lubricating performance of the bearing is better. The rolling bodies are installed on the retainers, the two retainers are both arranged between the outer ring and the inner ring, and the guide ring is installed between the two retainers. The invention belongs to the technical field of continuous casting machine bearings.

Description

Technical Field

[0001] The invention relates to a double-row spherical roller bearing, in particular to a double-row spherical roller bearing for a continuous casting machine, and belongs to the technical field of continuous casting machine bearings. Background Art

[0002] The continuous casting machine production line has a large load, high temperature, high dust, and harsh working environment. This requires the bearings on the continuous casting machine to have good load-bearing capacity and good lubrication, especially in the fan forging process. The bearings have to withstand huge impact forces, and extremely high durability requirements are placed on the bearings.

[0003] Therefore, a bearing is proposed for the above working environment, which has become a problem that needs to be solved urgently by technicians in this field. Summary of the invention

[0004] In view of the above-mentioned deficiencies of the prior art, the present invention provides a double-row spherical roller bearing for a continuous casting machine.

[0005] The technical solution of the present invention is: a double-row spherical roller bearing for a continuous casting machine, comprising an outer ring, an inner ring, a rolling body, a guide ring and two retaining frames.

[0006] A spherical raceway is arranged on the inner circumference of the outer ring, and two rows of raceways are arranged on the outer circumference of the inner ring.

[0007] A plurality of oil holes are provided on the circumferential surfaces of the outer ring and the inner ring in a circumferential array.

[0008] The rolling body is mounted on a retaining frame, and the two retaining frames are arranged between the outer ring and the inner ring. The guide ring is sleeved on the inner ring, and the guide ring is arranged between the two retaining frames.

[0009] Compared with the prior art, the present invention has the following effects:

[0010] 1. The outer ring 1 and the inner ring 2 of the present invention are both provided with a plurality of oil holes 8 in a circumferential array, so that the rolling element 4 and the raceway of the bearing can contact the lubricating oil at the closest distance, thereby obtaining better lubrication. The oil holes 8 can also store the lubricating oil better. As the lubricating oil is continuously consumed, the lubricating oil in the oil holes 8 can be timely replenished to the raceway and the rolling element 4, thereby ensuring better lubrication performance of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention;

[0012] Figure 2 is a cross-sectional view of the outer ring 1 of the present invention;

[0013] Figure 3 It is a cross-sectional view of the inner ring 2 of the present invention.

[0014] In the figure: 1, outer ring; 2, inner ring; 4, rolling element; 6, retaining frame; 62, guide ring; 8, oil hole. DETAILED DESCRIPTION

[0015] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0016] Specific implementation method 1: Combination Figures 1 to 3 The present embodiment is described below. A double-row spherical roller bearing for a continuous casting machine includes an outer ring 1 , an inner ring 2 , rolling elements 4 , a guide ring 62 and two retaining frames 6 .

[0017] The inner circumference of the outer ring 1 is provided with a spherical raceway, and the outer circumference of the inner ring 2 is provided with two rows of raceways.

[0018] A plurality of oil holes 8 are formed on the circumferential surfaces of the outer ring 1 and the inner ring 2 in a circumferential array.

[0019] The rolling bodies 4 are mounted on the retaining frames 6 . The two retaining frames 6 are arranged between the outer ring 1 and the inner ring 2 . The guide ring 62 is sleeved on the inner ring 2 , and the guide ring 62 is arranged between the two retaining frames 6 .

[0020] In this embodiment, both retaining frames 6 are nitrided. Nitriding is a chemical heat treatment process that allows nitrogen atoms to penetrate into the surface of the workpiece at a certain temperature to obtain higher surface hardness, enhance the wear resistance of the material, and increase the fatigue life of the material. At the same time, nitriding can also enable the workpiece to obtain better corrosion resistance, thereby increasing the life of the entire bearing and enabling the bearing to have better load-bearing capacity.

[0021] Specific implementation method 2: Combination Figures 1 to 3 The present embodiment will be described. In the present embodiment, the outer ring 1 and the inner ring 2 are both made of GCr15 bearing steel.

[0022] Furthermore, the material of the retaining frame 6 is low carbon steel.

[0023] Furthermore, the guide ring 62 is made of alloy steel, preferably powder metallurgy alloy steel.

[0024] In this embodiment, both the outer ring 1 and the inner ring 2 are subjected to high-temperature tempering heat treatment. High-temperature tempering can eliminate stress and improve the toughness of steel, so that the components of the bearing have good high-temperature resistance in a high-temperature use environment, and can increase the service life of the bearing under high-temperature conditions.

[0025] Other components and connection relationships are the same as those in the first specific implementation method.

[0026] Specific implementation method three: Combination Figures 1 to 3 To explain the present embodiment, in the present embodiment, the number of the oil holes 8 on the outer ring 1 is 2 to 4, and the number of the oil holes 8 on the inner ring 2 is 3 to 5.

[0027] This arrangement is because the continuous casting machine has to withstand high temperature environment most of the time in the steel plant. The lubrication performance of the bearing will decrease under high temperature. Oil holes 8 are opened on the outer ring 1 and the inner ring 2 to enable the raceways of the outer ring 1 and the inner ring 2 to contact the lubricating oil at the closest distance, thereby obtaining better lubrication. The oil holes 8 can also better store the lubricating oil. As the lubricating oil is continuously consumed, the lubricating oil in the oil holes 8 can be timely replenished to the raceways and rolling elements 4 to ensure better lubrication performance of the bearing.

[0028] Other components and connection relationships are the same as those in the first or second specific implementation.

[0029] How it works

[0030] The continuous casting machine has to endure high temperature environment in the steel plant most of the time. The lubrication performance of the bearing will decrease under high temperature. The oil holes 8 are opened on the outer ring 1 and the inner ring 2 to enable the raceways of the outer ring 1 and the inner ring 2 to contact the lubricating oil at the closest distance, thereby obtaining better lubrication. The oil holes 8 can also better store the lubricating oil. As the lubricating oil is continuously consumed, the lubricating oil in the oil holes 8 can be timely replenished to the raceways and rolling elements 4 to ensure better lubrication performance of the bearing.

[0031] The outer ring 1 and the inner ring 2 are both subjected to high-temperature tempering heat treatment. High-temperature tempering can eliminate stress and improve the toughness of steel, so that the components of the bearing have good high-temperature resistance in a high-temperature use environment, and can increase the service life of the bearing under high-temperature conditions.

[0032] Both retainers 6 are nitrided to obtain higher surface hardness, enhance the wear resistance of the material and increase the fatigue life of the material; at the same time, nitriding can also make the workpiece obtain better corrosion resistance, thereby increasing the life of the entire bearing and enabling the bearing to have better load-bearing capacity.

[0033] The present invention has been disclosed as above in the form of a preferred embodiment, but it is not intended to limit the present invention. Any simple modification, equivalent changes and modifications made to the above implementation cases by any professional and technical personnel who do not deviate from the content of the technical solution of the present invention and based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A double-row spherical roller bearing for a continuous casting machine, characterized in that: It comprises an outer ring (1), an inner ring (2), rolling elements (4), a guide ring (62) and two retaining frames (6); The inner circumferential surface of the outer ring (1) is provided with a spherical raceway, and the outer circumferential surface of the inner ring (2) is provided with two rows of raceways; A plurality of oil holes (8) are provided on the circumferential surfaces of the outer ring (1) and the inner ring (2) in a circumferential array; The rolling body (4) is mounted on a retaining frame (6), the two retaining frames (6) are arranged between the outer ring (1) and the inner ring (2), the guide ring (62) is sleeved on the inner ring (2), and the guide ring (62) is arranged between the two retaining frames (6).

2. The double-row spherical roller bearing for continuous casting machine according to claim 1, characterized in that: The outer ring (1) and the inner ring (2) are both made of GCr15 bearing steel.

3. The double-row spherical roller bearing for continuous casting machine according to claim 2, characterized in that: The material of the retaining frame (6) is low carbon steel.

4. The double-row spherical roller bearing for continuous casting machine according to claim 3, characterized in that: The guide ring (62) is made of alloy steel.

5. The double-row spherical roller bearing for continuous casting machine according to claim 4, characterized in that: The number of the oil holes (8) on the outer ring (1) is 2 to 4.

6. The double-row spherical roller bearing for continuous casting machine according to claim 5, characterized in that: The number of the oil holes (8) on the inner ring (2) is 3 to 5.

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