Cylindrical roller bearing and ball bearing pairing structure
By designing the matching structure of cylindrical roller bearings and ball bearings, and using oil holes and positioning notches to achieve forced oil injection lubrication and axial positioning of the bearings, the problem that the existing bearing configuration cannot meet the high speed and high load-bearing capacity, and the lubrication effect and load-bearing capacity of the bearing are improved.
Patent Information
- Application Number
- CN202420469759.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-03-12
AI Technical Summary
The bearing configurations used in existing automotive gearboxes cannot meet the operating conditions of high speed and high load-bearing capacity.
A cylindrical roller bearing and ball bearing pairing structure is designed. By setting oil holes on the end surface of the outer ring of the bearing and forming a complete circular oil hole in the semicircular oil groove of the cylindrical roller bearing and ball bearing, the forced oil injection lubrication of the bearing seat is achieved. At the same time, by setting a concave positioning notch, firm axial positioning of the bearing is achieved.
The forced oil injection lubrication and axial positioning of the bearing seat are realized, the lubrication effect and load-bearing capacity of the bearing are improved, and the use conditions of high rotation speed and high load-bearing capacity are met.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bearings, in particular to a pairing structure of a cylindrical roller bearing and a ball bearing. Background Art
[0002] The bearings used in automobile gearboxes have high comprehensive requirements, especially high speed and high load-bearing capacity are required for input bearings. The commonly used bearing configuration is fixed-end deep groove ball bearings and cylindrical roller bearings, and the free end uses cylindrical roller bearings, but currently they can no longer meet the operating conditions. Utility Model Content
[0003] In view of the above problems, the purpose of this application is to provide a cylindrical roller bearing and ball bearing pairing structure, so that it can achieve forced oil injection lubrication and firm axial positioning of the bearing seat.
[0004] To achieve some or all of the above-mentioned purposes or other purposes, the present application provides the following technical solutions: a cylindrical roller bearing and ball bearing pairing structure, the pairing structure comprising a cylindrical roller bearing and a ball bearing; an end face of the outer ring of the cylindrical roller bearing contacts an end face of the outer ring of the ball bearing, and an oil hole is arranged on the contact surface.
[0005] Furthermore, a semicircular oil groove is arranged on one end face of the outer ring of the cylindrical roller bearing, and a semicircular oil groove is arranged on one end face of the outer ring of the ball bearing. After the two bearings are matched, the semicircular oil groove of the cylindrical roller bearing and the semicircular oil groove on the ball bearing form a complete circular oil hole, and the oil hole passes through the overall outer ring of the cylindrical roller bearing and the ball bearing.
[0006] Furthermore, a concave positioning notch is provided on the outer ring of the cylindrical roller bearing near the outer diameter surface, and a concave positioning notch is provided on the outer ring of the ball bearing near the outer diameter surface; after the positioning notch on the cylindrical roller bearing and the positioning notch on the ball bearing are matched, positioning is achieved by pin fixation.
[0007] Furthermore, the symmetry axis of the positioning notch forms an angle of 45 degrees with the axis of the adjacent oil hole.
[0008] Furthermore, a slope is provided at the combined portion of the semicircular oil groove of the cylindrical roller bearing and the outer diameter of the outer ring of the cylindrical roller bearing; a slope is provided at the combined portion of the semicircular oil groove of the ball bearing and the outer diameter of the outer ring of the ball bearing; after the two bearings are matched, the slope on the cylindrical roller bearing and the slope on the ball bearing form a funnel-shaped structure.
[0009] Furthermore, axes of two adjacent oil holes are perpendicular to each other.
[0010] Furthermore, the inner diameter of the cylindrical roller bearing is the same as that of the ball bearing; the outer diameter of the cylindrical roller bearing is the same as that of the ball bearing; and the axial width of the cylindrical roller bearing is the same as that of the ball bearing.
[0011] Furthermore, the ball bearing is a four-point contact ball bearing.
[0012] Compared with the prior art, the utility model has the following beneficial effects: forced oil injection lubrication and firm axial positioning of the bearing seat can be achieved, the axial load-bearing capacity can be enhanced, the oil is forced to be injected from the outside of the bearing through the oil injection port, and flows into the inside of the bearing through the oil hole, thereby improving the bearing lubrication effect and making the inside of the bearing fully lubricated. The positioning notch is provided to achieve circumferential positioning of the bearing, and facilitate the installation of the bearing and the positioning of the oil hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the utility model.
[0014] Figure 2 This is a view of the cylindrical roller bearing of the utility model from the direction A.
[0015] Figure 3 This is a view of the ball bearing of the present invention from the direction A.
[0016] In the figure: 1. Cylindrical roller bearing; 2. Ball bearing 2; 3-1. Semicircular oil groove of cylindrical roller bearing; 3-2. Semicircular oil groove of ball bearing; 4-1. Positioning notch on cylindrical roller bearing; 4-2. Positioning notch on ball bearing; 5. Oil injection port. DETAILED DESCRIPTION
[0017] In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0018] See attached Figure 1-3 A cylindrical roller bearing 1 and a ball bearing 2 pairing structure, the pairing structure includes a cylindrical roller bearing 1 and a ball bearing 2; one end face of the outer ring of the cylindrical roller bearing 1 contacts with one end face of the outer ring of the ball bearing 2, and an oil hole is arranged on the contact surface. The technical effect of oil spraying lubrication from the outside of the bearing to the inside of the bearing can be achieved.
[0019] Furthermore, a semicircular oil groove is provided on one end face of the outer ring of the cylindrical roller bearing 1, and a semicircular oil groove is provided on one end face of the outer ring of the ball bearing 2. After the two bearings are matched, the semicircular oil groove 3-1 of the cylindrical roller bearing and the semicircular oil groove 3-2 of the ball bearing form a complete circular oil hole, and the oil hole passes through the overall outer ring of the cylindrical roller bearing 1 and the ball bearing 2.
[0020] Furthermore, the outer ring of the cylindrical roller bearing 1 is provided with a concave positioning notch near the outer diameter surface, and the outer ring of the ball bearing 2 is provided with a concave positioning notch near the outer diameter surface; the positioning notch 4-1 on the cylindrical roller bearing and the positioning notch 4-2 on the ball bearing are matched and fixed by a pin to achieve positioning. The positioning notch is used for circumferential positioning of the bearing and facilitates the installation of the bearing and the positioning of the oil hole.
[0021] Furthermore, the symmetry axis of the positioning notch forms an angle of 45 degrees with the axis of the adjacent oil hole.
[0022] Furthermore, a slope is provided at the combination of the semicircular oil groove 3-1 of the cylindrical roller bearing and the outer diameter of the outer ring of the cylindrical roller bearing 1; a slope is provided at the combination of the semicircular oil groove 3-2 of the ball bearing and the outer diameter of the outer ring of the ball bearing 2; after the two bearings are matched, the slope on the cylindrical roller bearing 1 and the slope on the ball bearing 2 form a funnel-shaped structure. An oil hole is provided on the bearing seat, and the joint between the oil hole and the oil injection port is provided in a funnel-shaped structure, which is convenient for oil inlet, and forced oil injection lubrication is performed from the outer ring direction. The oil flows from the outside of the bearing through the oil hole into the inside of the bearing, so that the inside of the bearing is fully lubricated, thereby improving the bearing lubrication effect.
[0023] Furthermore, axes of two adjacent oil holes are perpendicular to each other.
[0024] Furthermore, the inner diameter of the cylindrical roller bearing 1 is the same as the inner diameter of the ball bearing 2; the outer diameter of the cylindrical roller bearing 1 is the same as the outer diameter of the ball bearing 2; and the axial width of the cylindrical roller bearing 1 is the same as the axial width of the ball bearing 2.
[0025] Furthermore, the ball bearing 2 is a four-point contact ball bearing. The ball bearing 2 is mainly used to bear axial force, and the cylindrical roller bearing 1 is used to bear radial force. The ball bearing 2 adopts a four-point contact ball bearing to enhance the axial load-bearing capacity and achieve firm axial positioning.
[0026] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.
Claims
1. A cylindrical roller bearing and a ball bearing pairing structure, characterized in that: The pairing structure includes a cylindrical roller bearing and a ball bearing; an end surface of the outer ring of the cylindrical roller bearing contacts an end surface of the outer ring of the ball bearing, and an oil hole is arranged on the contact surface; A semicircular oil groove is provided on one end face of the outer ring of the cylindrical roller bearing, and a semicircular oil groove is provided on one end face of the outer ring of the ball bearing. After the two bearings are matched, the semicircular oil groove of the cylindrical roller bearing and the semicircular oil groove on the ball bearing form a complete circular oil hole, and the oil hole passes through the integral outer ring of the cylindrical roller bearing and the ball bearing. A slope is provided at the combined portion of the semicircular oil groove of the cylindrical roller bearing and the outer diameter of the outer ring of the cylindrical roller bearing; a slope is provided at the combined portion of the semicircular oil groove of the ball bearing and the outer diameter of the outer ring of the ball bearing; after the two bearings are matched, the slope on the cylindrical roller bearing and the slope on the ball bearing form a funnel-shaped structure.
2. A cylindrical roller bearing and ball bearing pairing structure according to claim 1, characterized in that: The outer ring of the cylindrical roller bearing is provided with a concave positioning notch near the outer diameter surface, and the outer ring of the ball bearing is provided with a concave positioning notch near the outer diameter surface; after the positioning notch on the cylindrical roller bearing and the positioning notch on the ball bearing are matched, positioning is achieved by pin fixation.
3. A cylindrical roller bearing and ball bearing pairing structure according to claim 2, characterized in that: The symmetry axis of the positioning notch forms an angle of 45 degrees with the axis of the adjacent oil hole.
4. The cylindrical roller bearing and ball bearing pairing structure according to claim 1, characterized in that: The axes of two adjacent oil holes are perpendicular to each other.
5. The cylindrical roller bearing and ball bearing pairing structure according to claim 1, characterized in that: The inner diameter of the cylindrical roller bearing is the same as that of the ball bearing; the outer diameter of the cylindrical roller bearing is the same as that of the ball bearing; and the axial width of the cylindrical roller bearing is the same as that of the ball bearing.
6. The cylindrical roller bearing and ball bearing pairing structure according to claim 1, characterized in that: The ball bearing is a four-point contact ball bearing.