Special-shaped three-point ball bearing
By designing a non-circular three-point ball bearing, utilizing the radial fit of the outer ring and the rigid connection of the flange, along with the positioning of the inner ring bolts, the problem of O-ring failure under high temperature and heavy load conditions was solved, thus improving the stability and precision of the bearing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- C&U CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-31
AI Technical Summary
In existing bearings, the O-ring anti-creep structure is prone to failure under high temperature and heavy load conditions, resulting in poor vibration prevention and affecting structural stability and operational accuracy.
The bearing adopts a non-circular three-point ball bearing design, which replaces the O-ring by using the radial fit of the outer ring and the rigid connection of the flange, combined with the bolt positioning of the inner ring, to ensure the stability and accuracy of the bearing under high temperature conditions.
It effectively resists vibration and stress-induced creep, improves the structural stability and operational accuracy of the bearing in high-temperature environments, and adapts to the low-speed, high-load working conditions of ship turbochargers.
Smart Images
Figure CN224579641U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearings, and in particular to an irregularly shaped three-point ball bearing. Background Technology
[0002] Bearings are important components used for rotating supports in mechanical bodies. They are widely used and can be seen everywhere in our lives and work. In order to adapt to various working environments, a variety of bearings have been developed. For example, bearings used in ship turbochargers are subject to high temperatures and heavy loads, which places high demands on the bearing's load-bearing capacity. Furthermore, due to the high temperatures, existing bearing technology uses O-rings to achieve an anti-creep structure. However, this can lead to the failure of the anti-creep structure because the O-rings cannot withstand the high temperatures. Utility Model Content
[0003] To address the shortcomings of existing technologies, this invention provides a non-circular three-point ball bearing that is more suitable for high-temperature environments and effectively prevents creep.
[0004] To achieve the above objectives, this utility model provides an irregular three-point ball bearing, including an outer ring, an inner ring, and a plurality of balls. The outer ring includes a radial extension corresponding to the balls and a first mating surface for fitting into a device housing. The outer ring includes a first extension located at one end of the outer ring in the axial direction and arranged in a ring shape. A flange is fitted onto the first extension, and the flange has a threaded hole for bolts to pass through to form a connection with the device housing.
[0005] The advantages of the above technical solution are: based on the radial fit between the first mating surface of the outer ring and the equipment housing, an annular first extension at one axial end and a flange fitted on the first extension are provided. The rigid fixation with the housing is achieved by bolt connection. The radial fit and the rigid connection of the flange replace the anti-creep of the O-ring, effectively resisting the small relative creep caused by vibration and stress, and ensuring the structural stability and operational accuracy under high temperature conditions.
[0006] This utility model can be further configured such that the inner ring is formed by splicing two semi-rings together.
[0007] With further design, the inner ring adopts a configuration of two semi-rings joined together, which allows the outer ring and balls to be installed first, and then the two semi-rings to be installed and joined together, making the bearing installation convenient.
[0008] The present invention can be further configured such that: the inner ring includes a second extension, the second extension is located at the other end of the axial direction of the inner ring, and the second extension is provided with a plurality of connecting holes for forming a screw connection with the mandrel.
[0009] By further designing the inner ring, a second extension is provided at the other end of the inner ring axial direction, and a connecting hole is provided on the second extension. The inner ring and the mandrel are bolted together through the connecting hole, which ensures the positioning of the two half-rings and also prevents the inner ring from creeping relative to the mandrel, thus ensuring the stability of the bearing.
[0010] This invention can be further configured such that the plurality of balls are fully loaded in the raceway formed between the outer ring and the inner ring.
[0011] By further configuring the bearings to be fully loaded into the raceway, the bearings' ability to withstand low speeds and high loads is enhanced, making them better suited to the low-speed, high-load operating conditions of ship turbochargers.
[0012] The present invention can be further configured such that: the outer ring includes a first arc-shaped groove, the inner ring includes a second peach-shaped groove, the first groove and the second groove are joined together to form a raceway for the ball bearing to be fully loaded, the ball bearing is in contact with the first groove at two points, and the ball bearing is in contact with the second groove at one point.
[0013] By further designing the raceway formed by the first and second grooves, the balls can form a three-point contact engagement. The balls can adaptively adjust the direction of force by changing the position of the contact points, thus better adapting to environments with large overturning forces. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a usage state diagram of an embodiment of the present utility model; Wherein: outer ring 1; first mating surface 11; first extension 12; flange 13; screw hole 131; first groove 14; inner ring 2; second extension 21; connecting hole 22; second groove 23; ball bearing 3 Detailed Implementation
[0015] An embodiment of this utility model of an irregularly shaped three-point ball bearing is shown below. Figure 1-2 As shown: It includes an outer ring 1, an inner ring 2 and a plurality of balls 3. The outer ring 1 includes a radial extension corresponding to the balls 3 and a first mating surface 11 for fitting into the equipment housing. The outer ring 1 includes a first extension 12, which is located at one end of the outer ring 1 in the axial direction and is arranged in a ring shape. A flange 13 is fitted on the first extension 12, and the flange 13 is provided with a bolt hole 131 for bolts to pass through to form a connection with the equipment housing.
[0016] The inner ring 2 is formed by joining two semi-rings.
[0017] The inner ring 2 includes a second extension 21, which is located at the other end of the axial direction of the inner ring 2, and the second extension 21 is provided with a plurality of connecting holes 22 for forming a screw connection with the mandrel.
[0018] The aforementioned balls 3 are fully loaded in the raceway formed between the outer ring 1 and the inner ring 2.
[0019] The outer ring 1 includes a first arc-shaped groove 14, and the inner ring 2 includes a second peach-shaped groove 23. The first groove 14 and the second groove 23 are joined together to form a raceway for the ball bearing 3 to be fully loaded. The ball bearing 3 is in contact with the first groove 14 at two points, and the ball bearing 3 is in contact with the second groove 23 at one point.
[0020] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.
Claims
1. A special-shaped three-point ball bearing, comprising an outer ring, an inner ring and a plurality of balls, the outer ring comprising a first mating surface corresponding to the radial extension of the balls and used to be fitted in a housing of a device, characterized in that: The outer ring includes a first extension, which is located at one end of the outer ring in the axial direction and is arranged in a ring shape. A flange is fitted on the first extension, and the flange has a bolt hole for bolts to pass through to form a connection with the equipment housing.
2. The profiled three-point ball bearing according to claim 1, characterized in that: The inner ring is formed by joining two semi-rings.
3. The profiled three-point ball bearing according to claim 2, characterized in that: The inner ring includes a second extension located at the other end of the inner ring's axial direction, and the second extension is provided with several connecting holes for forming a screw connection with the mandrel.
4. The profiled three-point ball bearing according to claim 1 or 2 or 3, characterized in that: The aforementioned balls are fully loaded in the raceway formed between the outer and inner rings.
5. The profiled three-point ball bearing according to claim 4, characterized in that: The outer ring includes a first arc-shaped groove, and the inner ring includes a second peach-shaped groove. The first and second grooves are joined together to form a raceway for the ball bearings to be fully loaded. The ball bearings are in contact with the first groove at two points and with the second groove at one point.