A roller cage assembly bearing

Abstract

The present invention discloses a roller-cage bearing assembly comprising a cage and cylindrical rollers. The cage includes ribs, an inner beam, and an outer beam. The ribs are located on either side of the cage in the axial direction. The inner beam is connected to the ribs on both sides. The outer beam is located in the middle of the cage in the axial direction. The outer beam has a larger diameter than the inner beam. The ribs are curved from the inner beam on both sides of the cage in the axial direction and open radially outward. The cylindrical rollers are positioned and rotated between the inner and outer beams. The roller-cage bearing assembly of the present invention exhibits improved precision, reliability, smooth operation, and a longer service life when used in parallel with two bearings.

Description

Technical Field

[0001] The present invention relates to the technical field of rolling bearings, in particular to a roller cage assembly bearing for an automobile gearbox. Background Art

[0002] Today's conventional roller cage assembly bearings do not fully consider the mutual influence of the two component bearings when used side by side because the structural layout and dimensions of the retaining flanges on both sides of the cage and the inner and outer beams. In actual parallel use, the running stability and precision reliability of the two bearings are poor, which will reduce the service life of the bearings. Summary of the Invention

[0003] In order to solve the above-mentioned shortcomings, the present invention provides a new roller-cage assembly bearing, which has better parallel use characteristics, better running stability and better precision reliability than conventional roller-cage assembly bearings.

[0004] The technical solution of the present invention is: a roller cage assembly bearing, including: a cage, a cylindrical roller; the cage is composed of a rib, an inner beam, and an outer beam; the characteristics are: the outer beam is located in the middle of the cage in the axial direction, the inner beam is located on both sides of the cage in the axial direction, and the diameter of the outer beam is greater than the diameter of the inner beam; the inner beam is connected to the rib, and the rib is bent from the inner beam on both sides of the axial direction of the cage and opens radially outward; the cylindrical roller is arranged between the inner beam and the outer beam for rotation.

[0005] The inner beams located on both sides of the axial direction of the retainer described in the technical solution of the present invention have a diameter smaller than the diameter of the center line of the roller, the diameter of the middle outer beam is larger than the diameter of the center line, and the radial distance between the inner beam and the center line is smaller than that of the outer beam. When the bearing rotates, the inner beam plays a guiding role. This structure improves the operating stability of the bearing during operation.

[0006] Because the retainer ribs curve radially outward from the inner beam on both axial sides, the outer diameter of the ribs can be maximized during machining. This reduces the radial distance from the roller outer diameter, increasing the area of ​​the outer end face of the ribs. Furthermore, by controlling the geometric tolerances of the outer end faces during machining, the contact accuracy and synchronization between the outer end faces of the two bearings are improved when the two bearings are operating in parallel, reducing any negative effects between the two bearings and improving their operational reliability. The minimum distance between the outer diameter of the ribs and the outer diameter of the rollers described in the technical solution of the present invention can be 0.2 to 0.3 mm.

[0007] Furthermore, the distance between the inner end face of the rib and the adjacent roller end face can be controlled during machining. Reducing this distance reduces the deflection torque between the roller and the cage, while also increasing the roller length, reducing dead space, and extending the bearing's service life. The distance between the inner end face of the rib and the roller end face described in the technical solution of the present invention can be as small as 0.5 to 0.8 mm.

[0008] The beneficial effects of the present invention are as follows: the roller cage assembly bearing structure of the present invention has the following features: the structural layout and dimensions of the retaining flanges and inner and outer beams on both sides of the cage take into account the mutual influence of the two assembly bearings when used in parallel, which can improve the operating stability and precision reliability of the two bearings in actual parallel use and extend the service life of the bearings.

[0009] The present invention is mainly used for supporting the transmission shaft of a commercial vehicle gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the bearing structure of the roller cage assembly of the present invention.

[0011] Figure 2 It is a schematic diagram of the roller cage assembly bearing of the present invention when it is working.

[0012] Figure: 1. Cage; 2. Cylindrical rollers; 3. Inner beam; 4. Outer beam; 5. Side ribs; 7. Centerline; 8. Spacing; 9. Window. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] like Figure 1 As shown, an embodiment of a roller-cage bearing assembly according to the present invention comprises a cage 1 and cylindrical rollers 2. The cage 1 comprises two side ribs 5, an inner beam 3, and an outer beam 4. The outer beam 4 is located axially in the center of the cage 1, while the inner beam 3 is located on either side of the cage 1. The outer beam 4 has a larger diameter than the inner beam 3. The inner beam 3 is connected to the two side ribs 5, which curve radially outward from the inner beam 3 on either side of the cage 1. The cylindrical rollers 2 are positioned between the inner and outer beams 3 and rotate. The diameter of the inner beams 3 on either side is smaller than the diameter of the centerline 7, while the diameter of the outer beam 4 in the middle is larger than the diameter of the centerline 7. The inner beam 3 is closer to the centerline 7 than the outer beam 4, providing guidance during bearing rotation. The distance 6 between the outer diameter of the two side ribs 5 and the outer diameter of the roller can be as small as 0.2 to 0.3 mm. The distance 8 between the inner end faces of the two side ribs 5 and the end face of the roller can be as small as 0.5 to 0.8 mm.

[0015] Installation process: Figure 1 As shown, the axial length of the window hole 9 on the cage 1 is slightly larger than the length of the cylindrical roller, and the width of the window hole is slightly smaller than the roller diameter. The cylindrical roller 2 is aligned and placed on the window hole 9 of the cage 1. The roller is pressed manually or mechanically, and the elastic deformation of the window hole 9 is used to make the cylindrical roller 2 enter between the inner beam 3 and outer beam 4 of the cage 1. This completes the assembly of a roller cage bearing assembly. In actual use, two roller cage bearing assemblies are placed side by side, such as Figure 2 Compared with the current conventional roller cage assembly bearing, the present invention has better parallel use characteristics.

Claims

1. A roller cage assembly bearing, comprising: A cage (1) and a cylindrical roller (2); the cage (1) is composed of a rib (5), an inner beam (3), and an outer beam (4); the characteristics are: the outer beam (4) is located in the middle of the cage (1) in the axial direction, the inner beam (3) is located on both sides of the cage (1) in the axial direction, and the diameter of the outer beam (4) is larger than the diameter of the inner beam (3); the inner beam (3) is connected to the rib (5), and the rib (5) is bent radially outward from the inner beam (3) on both sides of the cage (1); the cylindrical roller (2) is arranged between the inner beam (3) and the outer beam (4) for rotation; the diameter of the inner beam (3) on both sides is smaller than the diameter of the center line (7), and the diameter of the outer beam (4) in the middle is larger than the diameter of the center line ( 7), the distance between the inner beam (3) and the center line (7) is smaller than that between the outer beam (4), and the inner beam (3) plays a guiding role when the bearing rotates; the distance (6) between the outer diameter of the rib (5) and the outer diameter of the roller can be as small as 0.2 to 0.3 mm, thereby increasing the area of ​​the outer end face of the rib and controlling the shape and position tolerance of the outer end face; the distance (8) between the inner end face of the rib (5) and the end face of the roller can be as small as 0.5 to 0.8 mm; the retaining frame (1) is provided with a window hole (9); the axial length of the window hole (9) is slightly larger than the length of the cylindrical roller (2), and the width of the window hole is slightly smaller than the diameter of the cylindrical roller (2).

2. The roller cage assembly bearing according to claim 1, characterized in that: The cylindrical roller (2) is aligned and placed on the window hole (9) of the retaining frame (1), and the cylindrical roller (2) is pressed by human or mechanical force, and the elastic deformation of the window hole (9) is utilized to make the cylindrical roller (2) enter between the inner beam (3) and the outer beam (4) of the retaining frame (1).

3. The roller cage assembly bearing according to claim 1 or 2, characterized in that: In actual use, two roller cage assembly bearings are used side by side and close together.

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