High-strength rotor bearing

Abstract

The utility model discloses a high-strength rotor bearing which comprises a rotor shaft fixed with a rotor assembly, a bearing assembly is arranged outside the rotor shaft, the rotor assembly comprises a bearing outer ring, a bearing inner ring and a bearing ball, and the bearing ball is located between the bearing outer ring and the bearing inner ring. The bearing outer ring, the bearing inner ring and the bearing balls are all made of high-carbon chromium bearing steel; a retainer used for keeping the position of the bearing ball is arranged on the outer side of the bearing ball, the retainer comprises a first ring body and a second ring body, and a lubricating mechanism is arranged on the inner side of the retainer. According to the high-strength rotor bearing, the novel structural design is adopted, the mounting rod is arranged to be of a hollow structure, when lubricating oil needs to be added, the lubricating oil is added into the mounting rod through an injector, then the lubricating oil enters the connecting column through the mounting rod, and finally the lubricating oil is discharged from a through hole formed in the side face of the connecting column; and the purpose of lubricating the bearing balls is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotor bearings, and specifically relates to a high-strength rotor bearing. Background Technique

[0002] The rotor bearing is the core component that supports rotating components (such as motor rotors, turbine rotors, generator rotors, etc.). Its performance directly affects the operating efficiency, service life, and stability of the equipment. In order to adapt to a high-strength use environment, special steel materials are required to improve the strength.

[0003] In the prior art, the Chinese patent with the application number CN201380005318.2 discloses a bearing unit for a cableway rope pulley. Among them, the rope pulley is installed on the shaft, the shaft is supported in the bearing in the bearing housing, the inner ring or outer ring of at least one first bearing is connected to the shaft, the outer ring or inner ring of the first bearing is connected to the inner ring or outer ring of the second bearing, and is installed in the bearing housing through the second bearing.

[0004] Combined with the above materials, it can be seen that in the prior art, the bearing is generally used to connect the rotor and the motor housing to reduce the rotation resistance. However, in the actual use process, after the bearing is used for a period of time, lubricating oil needs to be added. Adding lubricating oil to the traditional bearing requires disassembly, and the adding process is relatively cumbersome. Content of the Utility Model

[0005] The purpose of the utility model is to provide a high-strength rotor bearing to solve the problem of cumbersome lubricating oil addition mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A high-strength rotor bearing includes a rotor shaft fixed to the rotor assembly. The bearing assembly is arranged outside the rotor shaft. The rotor assembly includes an outer bearing ring, an inner bearing ring, and bearing balls. The bearing balls are located between the outer bearing ring and the inner bearing ring. The outer bearing ring, the inner bearing ring, and the bearing balls are all made of high-carbon chromium bearing steel; a cage for maintaining its position is arranged outside the bearing balls, and the cage includes two parts, a first ring body and a second ring body, and a lubrication mechanism is arranged inside the cage.

[0007] Preferably, the lubrication mechanism includes a connecting column fixedly installed on the upper surface of the first ring body, and an installation rod is coaxially and fixedly welded to the upper end of the connecting column.

[0008] Preferably, the connecting columns and the bearing balls are distributed at intervals, and the installation rod is connected through a snap fit with the installation hole.

[0009] Preferably, the installation hole is opened inside the second ring body, the installation rod is of a hollow structure, and a through hole for discharging lubricating oil is opened on the side surface of the connecting column.

[0010] Preferably, an upper sealing ring and a lower sealing ring are arranged between the outer bearing ring and the inner bearing ring.

[0011] Preferably, the positions of the upper sealing ring and the lower sealing ring correspond to the position of the cage, and evenly distributed sealing lips are fixedly installed on the surfaces of the upper sealing ring and the lower sealing ring.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: This high-strength rotor bearing adopts a new structural design, and the specific content is as follows:

[0013] 1. The bearing assembly is installed between the outside of the rotor shaft and the motor housing to reduce the rotational friction. During this process, the cage is used to hold the position of the bearing balls to ensure the use effect of the bearing.

[0014] Furthermore, the cage is divided into two parts, a first ring body and a second ring body. The first ring body and the second ring body are connected by connecting columns. The mounting rod at the upper end of the connecting column is inserted and engaged with the mounting hole opened inside the second ring body to combine the first ring body and the second ring body into a whole.

[0015] Even further, the mounting rod is arranged in a hollow structure. When lubricating oil needs to be added, the lubricating oil is added into the mounting rod through a syringe. Then, the lubricating oil enters the connecting column through the mounting rod and finally discharges from the through holes opened on the side of the connecting column to achieve the purpose of lubricating the bearing balls.

[0016] 2. An upper sealing ring and a lower sealing ring are arranged between the outer bearing ring and the inner bearing ring. The sealing rings can reduce the dust entering the bearing interior, and equidistant sealing lips are arranged on the outside of the upper sealing ring and the lower sealing ring to achieve a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of the outer rotor of the present utility model;

[0019] Figure 3 is a schematic diagram of the cage structure of the present utility model;

[0020] Figure 4 is a schematic diagram of the disassembled structure of the cage of the present utility model;

[0021] Figure 5 is a schematic diagram of the internal structure of the connecting column of the present utility model;

[0022] Figure 6 is a schematic diagram of the first sealing ring and the second sealing ring of the present utility model.

[0023] In the figure: 1, rotor shaft; 2, outer bearing ring; 3, inner bearing ring; 4, bearing ball; 5, cage; 501, first ring body; 502, second ring body; 6, connecting column; 7, mounting rod; 8, mounting hole; 9, through hole; 10, upper sealing ring; 11, lower sealing ring; 12, sealing lip. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0025] Embodiment 1: Please refer to Figures 1 - 3 , for the purpose of achieving the position retention of the balls in this embodiment, the following technical solutions are provided, and specifically disclosed: a rotor shaft 1 fixed to the rotor assembly, a bearing assembly is arranged outside the rotor shaft 1, the rotor assembly includes an outer bearing ring 2, an inner bearing ring 3 and bearing balls 4, the bearing balls 4 are located between the outer bearing ring 2 and the inner bearing ring 3, and the outer bearing ring 2, the inner bearing ring 3 and the bearing balls 4 are all made of high-carbon chromium bearing steel; a cage 5 for maintaining its position is arranged outside the bearing balls 4, and the cage 5 includes two parts, a first ring body 501 and a second ring body 502.

[0026] When installing the device, first install the bearing assembly outside the rotor shaft 1. At this time, the inner groove of the inner bearing ring 3 corresponds to and engages with the protruding structure outside the rotor shaft 1. Then connect the outer bearing ring 2 to the motor housing. When the motor works, the rotor shaft 1 drives the inner bearing ring 3 to rotate. At this time, the bearing balls 4 are used to reduce the friction, and the cage 5 is used to maintain the position of the bearing balls 4 to ensure normal use.

[0027] Embodiment 2: Please refer to Figures 4 - 5 , for the purpose of achieving the simplification of lubrication operation in this embodiment, the following technical solutions are provided, and specifically disclosed: a lubrication mechanism is arranged inside the cage 5. The lubrication mechanism includes a connecting column 6 fixedly installed on the upper surface of the first ring body 501, and a mounting rod 7 is coaxially and fixedly welded to the upper end of the connecting column 6. The connecting column 6 and the bearing balls 4 are spaced apart, and the mounting rod 7 is connected in a through-engagement manner with the mounting hole 8. The mounting hole 8 is opened inside the second ring body 502, and the mounting rod 7 is of a hollow structure, and a through hole 9 for discharging lubricating oil is opened on the side surface of the connecting column 6.

[0028] The cage 5 is divided into a first ring body 501 and a second ring body 502. The first ring body 501 and the second ring body 502 are combined into a whole by the through engagement between the mounting rod 7 and the mounting hole 8. When lubricating oil needs to be added, the staff uses a syringe to inject the lubricating oil into the interior of the mounting rod 7 (the interior of the mounting rod 7 is provided with a hollow structure). Then, the lubricating oil enters the interior of the connecting column 6 through the mounting rod 7, and finally, the lubricating oil is discharged to the position of the bearing balls 4 through the through holes 9 on the side of the connecting column 6, achieving the purpose of lubricating the bearing balls 4.

[0029] Embodiment 3: Please refer to Figure 6 , in order to achieve the purpose of preventing dust from entering in this embodiment, the following technical solutions are provided, and specifically disclosed: an upper sealing ring 10 and a lower sealing ring 11 are arranged between the bearing outer ring 2 and the bearing inner ring 3. The positions of the upper sealing ring 10 and the lower sealing ring 11 correspond to the position of the cage 5, and evenly distributed sealing lips 12 are fixedly installed on the surfaces of the upper sealing ring 10 and the lower sealing ring 11.

[0030] During the use of the bearing, the upper sealing ring 10 and the lower sealing ring 11 are used to achieve the purpose of blocking dust from entering, avoiding dust from entering and affecting the normal use of the bearing. Equally spaced sealing lips 12 are arranged outside the upper sealing ring 10 and the lower sealing ring 11, and the sealing lips 12 are used to further improve the sealing effect.

[0031] In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength rotor bearing, comprising a rotor shaft (1) fixed to a rotor assembly, and a bearing assembly disposed outside the rotor shaft (1), characterized in that, Further comprising: The rotor assembly includes an outer bearing ring (2), an inner bearing ring (3), and bearing balls (4). The bearing balls (4) are located between the outer bearing ring (2) and the inner bearing ring (3). The outer bearing ring (2), the inner bearing ring (3), and the bearing balls (4) are all made of high-carbon chromium bearing steel; A cage (5) for maintaining the position of the bearing balls (4) is provided on the outer side of the bearing balls (4). The cage (5) includes two parts, a first ring body (501) and a second ring body (502). And a lubrication mechanism is provided inside the cage (5).

2. The high-strength rotor bearing according to claim 1, wherein: The lubrication mechanism includes a connecting column (6) fixedly installed on the upper surface of the first ring body (501), and a mounting rod (7) is coaxially and fixedly welded to the upper end of the connecting column (6).

3. The high-strength rotor bearing according to claim 2, wherein: The connecting columns (6) and the bearing balls (4) are spaced apart, and the mounting rod (7) is engaged with the mounting hole (8) through a through connection.

4. The high-strength rotor bearing according to claim 3, characterized in that: The mounting hole (8) is opened inside the second ring body (502). The mounting rod (7) is provided with a hollow structure, and a through hole (9) for discharging lubricating oil is opened on the side surface of the connecting column (6).

5. A high-strength rotor bearing according to claim 1, characterized in that: An upper sealing ring (10) and a lower sealing ring (11) are provided between the outer bearing ring (2) and the inner bearing ring (3).

6. The high-strength rotor bearing according to claim 5, characterized in that: The positions of the upper sealing ring (10) and the lower sealing ring (11) correspond to the position of the cage (5). And sealing lips (12) are fixedly installed on the surfaces of the upper sealing ring (10) and the lower sealing ring (11) and are evenly distributed.

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