Bearing optimization retainer

Abstract

An optimized bearing retainer comprises a retainer body, a plurality of pockets are formed in the retainer body, claw openings are formed among the pockets, rib plates are connected to the side faces of the claw openings, and one sides of the claw openings are blocked by the rib plates. Compared with the prior art, the optimized bearing retainer has the advantages that the rib plates are additionally arranged on the outer diameter of an existing retainer, the probability of bearing failure caused by retainer breakage is reduced, the rib plates block the side faces of the claw openings, the inner areas of the claw openings serve as oil storage spaces, the content of lubricating grease in the bearing is increased, and the service life of the bearing is prolonged. And an oil film is formed on the surface of the rolling body, so that friction is reduced, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to an optimized bearing cage. Background Technology

[0002] As an important component of bearings, the cage has the following functions: 1. The cage separates the rolling elements at equal distances, distributing them evenly on the circumference of the raceway, preventing collisions and friction between the rolling elements during operation; 2. It guides and drives the rolling elements to roll on the correct raceway; 3. In separable bearings, it combines the rolling elements with a raceway to prevent the rolling elements from falling off. The cage needs to possess good mechanical properties, thermal stability, and wear resistance to adapt to bearing use under extreme operating conditions. Therefore, optimizing the cage structure helps increase bearing life and operational stability.

[0003] Similarly, grease plays a crucial role in the normal operation of bearings: 1. It prevents or reduces direct metal-to-metal contact between rolling elements, raceways, and cages, reducing friction and wear; 2. It forms an oil film on the friction surfaces. When a pressure oil film is formed, it increases the contact area of ​​the parts, thus reducing contact stress and extending the rolling contact fatigue life; 3. Lubricants have rust and corrosion prevention properties; 4. Oil lubrication also dissipates heat and removes wear particles or contaminants generated or introduced during bearing operation; 5. Grease lubrication increases sealing to prevent the intrusion of external contaminants; 6. It has a certain effect on vibration and noise reduction.

[0004] Currently, such as Figure 2 As shown, the existing cage is a crown-type cage, made of glass fiber injection molding, with a single-sided opening and structures such as pockets, claws, and bases. When bearings with this type of cage operate at high speeds, due to changes in centrifugal force, contact angle, etc., complex movements such as differential, spin, and gyroscopic motion will occur between the steel balls and the raceways. These movements will inevitably cause violent collisions to the cage, aggravating cage wear, heat generation, and deformation, and increasing the probability of cage breakage. Utility Model Content

[0005] The technical problem this utility model aims to solve is to provide an optimized bearing cage, addressing the shortcomings of the existing technology. To solve the above technical problem, the technical solution adopted by this utility model is:

[0006] An optimized bearing cage includes a cage body with multiple pockets and claw openings between each pocket. Ribs are connected to the sides of the claw openings and block one side of the claw openings.

[0007] Furthermore, the stiffening plate and the retainer frame are integrally formed.

[0008] Furthermore, the stiffener is located on one side of the outer ring of the bearing.

[0009] Furthermore, the wall thickness of the stiffening plate is 25% to 30% of the wall thickness of the frame body.

[0010] Compared with the prior art, the present invention provides an optimized bearing cage by adding ribs to the outer diameter of the existing cage, which reduces the probability of bearing failure due to cage breakage. The ribs block the side of the claw opening, and the internal area of ​​the claw opening serves as an oil storage space, increasing the grease content in the bearing. This increased grease content forms an oil film on the surface of the rolling elements, reducing friction and thus increasing the bearing's service life. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the original cage structure;

[0013] Among them, 1. cage frame, 2. pocket, 3. claw opening, 4. stiffening plate. Detailed Implementation

[0014] The technical solutions in the embodiments of this utility model will be clearly and completely described below.

[0015] like Figure 1 As shown, an optimized bearing cage includes a cage body 1 with multiple pockets 2 for mounting rolling elements. Each pocket 2 has a claw opening 3, and a rib plate 4 is connected to the side of the claw opening 3 to block one side of the claw opening 3.

[0016] Generally, the amount of grease in a bearing accounts for 1 / 3 of the bearing's internal space. By adding ribs 4 at the jaw 3 to increase the strength of the cage, and at the same time making the jaw 3 an oil storage space, the grease content of the bearing is increased. Increasing the grease content in the bearing within an appropriate range can increase the bearing's lubrication effect, further reduce friction and wear during high-speed operation, and improve the bearing's service life.

[0017] In this embodiment, the stiffener 4 is made of fiberglass and is integrally formed with the cage frame 1. The wall thickness of the stiffener 4 is 25% to 30% of the wall thickness of the cage frame 1. If the wall thickness of the stiffener 4 is less than 25% of the wall thickness of the cage frame 1, the strength enhancement effect of the cage will be poor. If the wall thickness of the stiffener 4 is more than 30% of the wall thickness of the cage frame 1, it will be difficult to install the rolling elements.

[0018] In this embodiment, the rib 4 is located on one side of the outer ring of the bearing. Placing the rib 4 on one side of the outer ring of the bearing can prevent the grease from being thrown onto the side wall of the outer ring during high-speed operation of the bearing. During the bearing process, it ensures that the grease can lubricate and form an oil film on the surface of the rolling elements.

[0019] Taking the 830 model bearing as an example

[0020] 1. Deformation tests were conducted using both the original and improved cages, and the outer diameter deformation was measured, as shown in Tables 1 and 2 below:

[0021] Table 1

[0022]

[0023]

[0024] Table 2

[0025]

[0026] 2. Life tests were conducted using the original cage and the improved cage, and the results are shown in Table 3 below:

[0027] Table 3

[0028] condition Existing cage New cage engine speed / rpm 27000 27000 Temperature / °C -30 -30 Time / h 300 300 Number of experimental groups / groups 8 8 Number of NGs / groups 5 1

[0029] Therefore, it can be seen that by using the improved cage, the cage deformation is reduced and the service life of the bearing is increased.

[0030] This utility model is not limited to the embodiments described. Those skilled in the art can still make some modifications or changes without departing from the spirit and scope of this utility model. Therefore, the scope of protection of this utility model shall be determined by the scope defined in the claims.

Claims

1. A bearing optimized cage, comprising a cage body, wherein the cage body has a plurality of pockets, and claw openings are provided between each pocket, characterized in that: Ribs are connected to the side of the claw opening, and the ribs block one side of the claw opening.

2. The bearing optimized cage according to claim 1, characterized in that: The stiffening plate and the retainer frame are integrally formed.

3. The bearing optimized cage according to claim 1, characterized in that: The stiffener is located on one side of the outer ring of the bearing.

4. The bearing optimized cage according to claim 3, characterized in that: The wall thickness of the stiffening plate is 25% to 30% of the wall thickness of the frame body.

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