Multifunctional pure rolling tapered roller bearing

Abstract

The invention discloses a multifunctional pure rolling tapered roller bearing, and relates to the technical field of transmission machinery, slope conical flanges are arranged on the inner wall of a bearing outer ring, conical chamfers matched with the slope conical flanges are arranged at the two ends of a tapered roller, and linear rolling contact is formed between the slope conical flanges and the conical chamfers. According to the tapered roller bearing disclosed by the invention, the problem of staggered sliding friction between a flange on the bearing inner ring and the tapered roller in a traditional tapered roller bearing is solved, so that the tapered roller bearing disclosed by the invention cannot be blocked when bearing a certain axial force, and the tapered roller bearing disclosed by the invention not only can bear radial bearing force.

Description

Technical Field

[0001] This invention relates to the field of transmission machinery technology, specifically to a multifunctional pure rolling tapered roller bearing. Background Technology

[0002] Traditional tapered roller bearings have a certain radial load capacity and a small axial load capacity. When the axial load increases further, the bearing will seize. Therefore, a certain clearance is usually left when installing tapered roller bearings. For a long time, some mechanical equipment has used tapered roller bearings to bear axial loads, often resulting in a significantly shortened service life. Furthermore, currently, insufficient axial load capacity is a common problem in applications such as steam turbines, water turbines, and heavy-duty truck wheel hub bearings, leading to malfunctions such as aircraft engine shutdowns, heavy-duty truck breakdowns when turning on slopes, and water turbine seizures during operation.

[0003] like Figures 1-2 As shown, a traditional tapered roller bearing consists of an outer ring 2a, an inner ring 1a, and rollers 3a installed between the outer ring 2a and the inner ring 1a; an inner ring oil groove 5a is provided in the inner ring flange 4a on the inner ring 1a.

[0004] Observation and research revealed the following problem with traditional tapered roller bearings: the outer diameter of the inner ring flange 4a and the outer diameter of the roller 3a form an alternating contact, resulting in... Figure 1 and Figure 2 The tapered rollers have interlocking friction contact surfaces 6a, resulting in interlocking sliding friction during rotation. Therefore, when traditional tapered roller bearings are subjected to a certain axial force, they can experience shaft burn-out and bearing seizure, preventing the use of axial forces. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a multifunctional pure rolling tapered roller bearing. This invention solves the problem of alternating sliding friction between the flange on the inner ring of the bearing and the tapered rollers in traditional tapered roller bearings. As a result, the tapered roller bearing of this invention will not jam when subjected to a certain axial force, and can withstand not only radial loads but also axial loads.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: it comprises a tapered roller bearing body, the tapered roller bearing body including an inner bearing ring, an outer bearing ring, and tapered rollers installed between the inner and outer bearing rings; the tapered roller bearing body further includes a sloping conical flange disposed on the inner wall of the outer bearing ring; the tapered rollers have conical chamfers at both ends that cooperate with the sloping conical flange; the sloping conical flange of the outer bearing ring and the conical chamfer of the tapered rollers form linear rolling contact; the inner bearing ring has a flangeless structure.

[0007] Furthermore, the outer wall of the inner ring of the bearing is provided with a conical structure, and the lower edge is integrally formed with a reinforcing rib (without the inner ring retaining structure of the traditional tapered roller bearing). The reinforcing rib is not used as a retaining edge of the tapered roller bearing.

[0008] Furthermore, the outer ring of the bearing has arc-shaped raceway grooves on both sides to ensure full contact between the tapered rollers and the raceway and the sloping tapered flange, and can also be used as an oil passage.

[0009] Furthermore, the lower edge of the outer wall of the inner ring of the bearing is integrally formed with reinforcing ribs.

[0010] Furthermore, in use, two tapered roller bearings are combined back to back.

[0011] Furthermore, in use, two tapered roller bearings are combined face to face.

[0012] Furthermore, in use, a tapered roller bearing is combined with a deep groove ball bearing.

[0013] Furthermore, in use, a tapered roller bearing is combined with a cylindrical roller bearing.

[0014] Furthermore, the sloping conical flange in the tapered roller bearing can be extended to the outer ring of the cylindrical roller bearing; meanwhile, the inner ring of the cylindrical roller bearing has a flangeless structure.

[0015] This invention retains the core components of a tapered roller bearing: the inner ring, the outer ring, and the tapered rollers mounted between them. It eliminates the inner ring flange on the traditional tapered roller bearing inner ring, replacing it with a sloping conical flange on the inner wall of the outer ring that matches the tapered rollers. Simultaneously, conical chamfers are machined at both ends of the tapered rollers, ensuring a precise fit between the sloping conical flange of the outer ring and the conical chamfer of the tapered rollers, forming a linear rolling contact structure. Furthermore, an arc-shaped raceway groove is created on the inner wall of the outer ring. During operation, the staggered sliding friction generated by the interlacing contact between the outer diameter of the inner ring flange and the outer diameter of the rollers in a traditional tapered roller bearing is replaced by the sloping conical flange of this invention. The linear rolling contact between the sloping conical flange and the conical chamfer of the tapered roller replaces frictionless operation because the displacement distance of each contact point is equal under this linear rolling contact state. This fundamentally eliminates the problem of excessive resistance caused by sliding friction, so that the tapered roller bearing will not seize up due to frictional heating or a surge in resistance when subjected to large axial forces. At the same time, the fit design between the sloping conical flange and the tapered roller ensures that the radial load-bearing capacity is not affected, achieving a balance between axial and radial load-bearing capacity. The arc-shaped raceway groove further disperses the stress concentration at the contact points, reduces the damage of impact loads to the bearing, and improves operational stability.

[0016] The above working principle also applies to cylindrical roller bearings. By adjusting the same flange position and optimizing the contact form, cylindrical roller bearings can have stronger axial load capacity and longer service life, meeting the requirements of high-speed and heavy-load conditions.

[0017] This invention is groundbreaking. Traditional tapered roller bearings can only withstand tens of kilograms of axial force, while the tapered roller bearing of this invention can withstand several tons to hundreds of tons of axial force and can be used as a reference bearing for other suspension bearings. It is widely used in aero engines, steam turbines, gas turbines, propellers, thrusters, hydroelectric turbines, wind turbines, axial flow fans, and water pumps, effectively solving problems such as in-flight engine failures, breakdowns of heavy trucks when turning on slopes, and water turbine jamming during operation. It has an indispensable function in the field of axial force applications.

[0018] Compared with the prior art, the beneficial effects of the present invention are: This invention innovatively changes the inner ring flange of the traditional tapered roller bearing to the sloping conical flange on the inner wall of the outer ring of the bearing in this invention, and it has double flanges on the outer ring; The conical roller in this invention has conical chamfers at both ends, which cooperate with the sloping conical flange of the outer ring; The bearing inner ring of this invention does not have a retaining flange; The bearing inner ring of the present invention is provided with reinforcing ribs, which are not used as flanges of tapered roller bearings; The traditional inner ring oil groove on the inner ring of a tapered roller bearing is changed to the arc-shaped raceway grooves on both sides of the raceway on the outer ring of the bearing in this invention, which ensures full contact between the tapered roller and the raceway and the sloping tapered flange, and can also be used as an oil passage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the longitudinal section of a conventional tapered roller bearing, which is part of the background technology of this invention.

[0020] Figure 2 This is a schematic diagram of the horizontal cross-section of a conventional tapered roller bearing, which is part of the background technology of this invention.

[0021] Figure 3 This is a schematic diagram of the longitudinal section of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the present invention cut in the horizontal direction.

[0023] Figure 5 This is a schematic diagram of the longitudinal section structure when the tapered roller bearing in this invention is transformed into a cylindrical roller bearing.

[0024] Figure 6 This is a diagram showing the back-to-back assembly state of the present invention.

[0025] Figure 7 This is a diagram showing the face-to-face combination state of the present invention.

[0026] Figure 8 This is a diagram showing the combination of the present invention with a deep groove ball bearing.

[0027] Figure 9 This is a diagram showing the combination of the present invention with a cylindrical roller bearing.

[0028] Explanation of reference numerals in the attached figures: Bearing inner ring 1, reinforcing rib 1-1, bearing outer ring 2, arc-shaped raceway groove 2-1, tapered roller 3, tapered chamfer 3-1, sloping tapered flange 4, inner ring 1a, outer ring 2a, roller 3a, inner ring flange 4a, inner ring oil groove 5a, staggered friction contact surface 6a. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 3-4 As shown, this specific embodiment adopts the following technical solution: It includes a tapered roller bearing body, which includes an inner bearing ring 1, an outer bearing ring 2, and tapered rollers 3 installed between the inner bearing ring 1 and the outer bearing ring 2. The tapered roller bearing body also includes a sloping conical flange 4, which is disposed on the inner wall of the outer bearing ring 2. The tapered rollers 3 have conical chamfers 3-1 at both ends that match the sloping conical flange 4. The sloping conical flange 4 of the outer bearing ring 2 and the tapered rollers... Linear rolling contact is formed between the conical chamfers 3-1 of the inner ring 3; the outer wall of the inner ring 1 of the bearing does not have the inner ring flange 4a of the traditional tapered roller bearing (that is, the inner ring 1 of the bearing has a flange-less structure), and the lower edge of the outer wall of the inner ring 1 of the bearing is integrally formed with a reinforcing rib 1-1, which is not used as a flange of the tapered roller bearing; the raceway of the outer ring 2 of the bearing is provided with arc-shaped raceway grooves 2-1 on both sides to ensure full contact between the tapered roller 3 and the raceway and the sloping conical flange 4, and can also be used as an oil passage.

[0031] This invention retains the core components of a tapered roller bearing: the inner ring 1, the outer ring 2, and the tapered rollers 3 mounted between them. It eliminates the inner ring flange 4a on the traditional inner ring of a tapered roller bearing, replacing it with a sloping conical flange 4 on the inner wall of the outer ring 2 that matches the tapered rollers 3. Simultaneously, conical chamfers 3-1 are machined at both ends of the tapered rollers 3, ensuring precise contact between the sloping conical flange 4 of the outer ring 2 and the conical chamfers 3-1 of the tapered rollers 3, forming a linear rolling contact structure. Furthermore, an arc-shaped raceway groove 2-1 is formed on the inner wall of the outer ring 2. During operation, the interlacing sliding friction generated by the interlacing contact between the outer diameter of the inner ring flange 4a and the outer diameter of the rollers 3a in a traditional tapered roller bearing... The linear rolling contact between the sloping conical flange 4 and the conical chamfer 3-1 of the tapered roller 3 in this invention is replaced by the linear rolling contact. Since the displacement distance of each contact point is equal in this linear rolling contact state, frictionless operation is achieved, fundamentally eliminating the problem of excessive resistance caused by sliding friction. This prevents the tapered roller bearing from seizing due to frictional heating or a surge in resistance when subjected to large axial forces. At the same time, the fit design between the sloping conical flange 4 and the tapered roller 3 ensures that the radial load-bearing capacity is not affected, achieving a balance between axial and radial load-bearing capacity. The arc-shaped raceway groove 2-1 further disperses the stress concentration at the contact points, reduces the damage of impact loads to the bearing, and improves operational stability.

[0032] See Figure 5 The tapered roller bearing described in this invention can be evolved into a cylindrical roller bearing. Specifically, the sloping tapered flange 4 in the tapered roller bearing can be extended to the outer ring 2 of the cylindrical roller bearing; at the same time, the inner ring 1 of the cylindrical roller bearing has a flangeless structure. Through the same flange position adjustment and contact form optimization, the cylindrical roller bearing can also have stronger axial load capacity and longer service life, meet the requirements of high-speed heavy load and other high-end axial force conditions, and solve the long-standing problem that bearings cannot simultaneously handle axial force and radial force.

[0033] This invention is groundbreaking. Traditional tapered roller bearings can only withstand tens of kilograms of axial force, while the tapered roller bearing of this invention can withstand several tons to hundreds of tons of axial force and can be used as a reference bearing for other suspension bearings. It is widely used in aero engines, steam turbines, gas turbines, propellers, thrusters, hydroelectric turbines, wind turbines, axial flow fans, and water pumps, etc., and has an indispensable function in the field of axial force application.

[0034] Example 1: See Figure 6 In this embodiment, two tapered roller bearings are combined back to back, and this combination can withstand bidirectional axial forces.

[0035] Example 2: See Figure 7In this embodiment, two tapered roller bearings are combined face to face, and this combination can withstand bidirectional axial forces.

[0036] Example 3: See Figure 8 In this embodiment, a tapered roller bearing is combined with a deep groove ball bearing, which can work stably during axial movement.

[0037] Example 4: See Figure 9 In this embodiment, a tapered roller bearing and a cylindrical roller bearing are combined, and this combination can work stably during axial movement.

[0038] Compared with the prior art, the beneficial effects of the present invention are: the present invention provides a multifunctional pure rolling tapered roller bearing, which solves the problem of interlaced sliding friction between the flange on the inner ring of the bearing and the tapered roller in the traditional tapered roller bearing, so that the tapered roller bearing of the present invention will not cause the bearing to seize when subjected to a certain axial force, and the tapered roller bearing of the present invention can not only bear radial load, but also bear axial load.

[0039] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A multifunctional pure rolling tapered roller bearing, comprising a tapered roller bearing body, the tapered roller bearing body comprising an inner bearing ring (1), an outer bearing ring (2), and tapered rollers (3) installed between the inner bearing ring (1) and the outer bearing ring (2). Its features are: The tapered roller bearing body also includes a sloping conical flange (4) disposed on the inner wall of the outer ring (2) of the bearing, and the tapered roller (3) has conical chamfers (3-1) at both ends that cooperate with the sloping conical flange (4). The sloping conical flange (4) of the outer ring (2) of the bearing and the conical chamfer (3-1) of the tapered roller (3) form a linear rolling contact.

2. The multifunctional pure rolling tapered roller bearing according to claim 1, characterized in that: The bearing inner ring (1) has a flangeless structure.

3. A multifunctional pure rolling tapered roller bearing according to claim 1, characterized in that: The lower edge of the outer wall of the inner ring (1) of the bearing is integrally formed with reinforcing ribs (1-1).

4. A multifunctional pure rolling tapered roller bearing according to claim 1, characterized in that: The outer ring (2) of the bearing has arc-shaped raceway grooves (2-1) on both sides of the raceway.

5. A multifunctional pure rolling tapered roller bearing according to claim 1, characterized in that: When in use, the two tapered roller bearings are assembled back to back.

6. A multifunctional pure rolling tapered roller bearing according to claim 1, characterized in that: When in use, two tapered roller bearings are assembled face to face.

7. A multifunctional pure rolling tapered roller bearing according to claim 1, characterized in that: In use, a tapered roller bearing is combined with a deep groove ball bearing.

8. A multifunctional pure rolling tapered roller bearing according to claim 1, characterized in that: In use, a tapered roller bearing is combined with a cylindrical roller bearing.

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