High-load double-roller bearing retainer
By setting two rolling elements in the double-row roller bearing cage and utilizing an annular crossbeam and protrusion structure, the problem of uneven radial force on the cage under high load is solved, achieving higher load-bearing capacity and stability, reducing friction and noise, and extending the service life of the bearing.
Patent Information
- Application Number
- CN202422692158.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Under high load conditions, the cage of double-row roller bearings is prone to uneven radial force, resulting in local wear, noise, vibration and shortened service life. At the same time, the friction between the rolling elements and the cage is large, affecting the operating stability and reliability of the bearings.
Two rolling elements are arranged in the window hole of the bearing retainer, and the window hole is divided into upper and lower window holes by an annular crossbeam to increase the structural strength of the annular frame and the crossbeam. The upper and lower protrusions are used to limit and stagger the rolling elements to reduce the friction contact area, and an oil storage tank and oil holes are provided on the window beam to improve the lubrication effect.
It improves the bearing's load-bearing capacity and operating stability, reduces noise, extends its service life, and reduces friction resistance by improving lubrication, thereby improving the bearing's reliability and durability.
Smart Images
Figure CN223374923U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bearing retainers, and in particular relates to a high-load double-roller bearing retainer. Background Art
[0002] A cage (also known as a bearing retainer) is a bearing component that partially wraps around all or part of the rolling elements and moves with them. It is used to isolate the rolling elements and usually guides the rolling elements and holds them in the bearing.
[0003] Under high loads, bearing cages are prone to uneven radial force, which manifests as localized wear and deformation, leading to noise, vibration, and damage, significantly shortening the bearing cage's service life. Compared to single-row roller bearings, double-row roller bearings offer higher load capacity. However, in double-row roller bearings, greater friction is generated between the rolling elements and the cage. When the bearings operate at high speeds, the rolling elements directly contact the window beam, resulting in greater friction and increasing the strength requirements of the window beam structure. Utility Model Content
[0004] In response to the problems and shortcomings of the aforementioned prior art, the present invention provides a high-load double-roller bearing cage. By arranging two rolling elements within each window aperture of the bearing cage, the load-bearing capacity of the double-row roller bearing is improved. An annular crossbeam separates the two rolling elements within the window aperture, enhancing the support stability of the rolling elements. Upper and lower protrusions are provided on the sidewalls of the window beam to enhance the structural strength of the window beam. The staggered arrangement of rolling elements within the window apertures significantly improves the operational stability and reliability of the bearing structure, increasing load capacity, reducing noise, and significantly extending the service life of the bearing.
[0005] The utility model is realized through the following technical solutions:
[0006] A high-load double-roller bearing cage includes two opposing annular frames and a plurality of window beams connecting the two annular frames. A window hole for mounting a rolling element is formed between adjacent window beams. An annular crossbeam connecting the window beams is provided in the middle of the two annular frames. The annular crossbeam separates the window holes into upper and lower window holes, thereby improving the support stability for the rolling elements. The right side of each window beam has an upper protrusion facing the upper window hole, and the left side of each window beam has a lower protrusion facing the lower window hole. The bottom of the rolling element in the upper window hole abuts against the top of the lower protrusion and the annular crossbeam. The top of the rolling element in the lower window hole abuts against the bottom of the upper protrusion and the annular crossbeam. The two rolling elements in each window hole are arranged in parallel and staggered positions, thereby improving the stability and reliability of the bearing operation, increasing the bearing's load capacity, and extending the bearing's service life.
[0007] Furthermore, the annular frame and the annular crossbeam both have an upper limit protrusion facing the upper window hole and a lower limit protrusion facing the lower window hole. The upper and lower sides of the rolling body respectively abut against the upper limit protrusion or the lower limit protrusion to reduce the contact area between the rolling body and the annular frame and the annular crossbeam, thereby increasing the friction resistance of the rolling body during operation.
[0008] Furthermore, oil storage grooves are formed between the two sides of the upper limit protrusion and the window beam, and oil storage grooves are formed between the two sides of the lower limit protrusion and the window beam, which increases the residence time of the lubricating oil in the bearing retainer and improves the lubrication effect on the rolling elements.
[0009] Furthermore, the annular crossbeam includes an upper crossbeam and a lower crossbeam, and an oil gap is formed between the upper crossbeam and the lower crossbeam to increase the fluidity of the lubricating oil in the bearing cage and improve the lubrication effect on the rolling elements.
[0010] Furthermore, the upper limit projection has an upper oil hole that passes through the upper limit projection, the annular frame, and the upper crossbeam. The lower limit projection has a lower oil hole that passes through the lower limit projection, the annular frame, and the lower crossbeam. The axes of the upper and lower oil holes are both vertically arranged and parallel to each other. The axes of the rolling elements in the upper and lower window holes are parallel to each other. The staggered arrangement of the rolling elements improves the stability and reliability of the bearing during operation.
[0011] Furthermore, the width of the oil gap is smaller than the thickness of the upper beam or the lower beam, thereby ensuring the basic structural strength of the annular beam.
[0012] Furthermore, the lower protrusion of the window beam extends to be flush with the surface of the upper limit protrusion, and the upper protrusion of the window beam extends to be flush with the surface of the lower limit protrusion. The upper limit protrusion and the lower protrusion jointly support the rolling element in the upper window hole, and the lower limit protrusion and the upper protrusion jointly support the rolling element in the lower window hole, thereby improving the stability of the rolling element during rotation.
[0013] Furthermore, oil grooves are provided on the window beams on both sides of the upper window hole and on the window beams on both sides of the lower window hole to improve the lubrication effect of the lubricating oil on the rolling elements.
[0014] Furthermore, the width of the oil groove is the same as the thickness of the window beam, ensuring that the oil groove can communicate with the inner and outer sides of the bearing retainer.
[0015] Beneficial effects of the utility model:
[0016] 1. By arranging two rolling elements in each window hole of the bearing cage, the load-bearing capacity of the double-row roller bearing is improved;
[0017] 2. Use an annular crossbeam to separate the two rolling elements in the window hole to improve the support stability of the rolling elements;
[0018] 3. Set upper and lower bulges on the side walls of the window beam to enhance the structural strength of the window beam;
[0019] 4. The rolling elements staggered in the window holes greatly improve the operating stability and reliability of the bearing structure, increase the load capacity, reduce noise, and greatly extend the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A connection diagram for illustrating an exemplary embodiment of a high-load double-roller bearing cage in the present invention;
[0021] Figure 2 A schematic structural diagram for illustrating an exemplary embodiment of a high-load double-roller bearing cage in the present invention;
[0022] Figure 3 To illustrate Figure 2 A partial enlarged schematic diagram in the middle;
[0023] Figure 4 To illustrate Figure 2 A partial enlarged schematic diagram of point B in the middle;
[0024] Figure 5 A partial simplified structural diagram is used to illustrate a schematic implementation of a high-load double-roller bearing cage in the utility model.
[0025] List of parts and reference numerals:
[0026] 1. Annular frame; 2. Window beam; 21. Upper protrusion; 22. Lower protrusion; 23. Oil trough; 3. Window hole; 31. Upper window hole; 32. Lower window hole; 4. Annular crossbeam; 41. Upper limit protrusion; 411. Upper oil hole; 42. Lower limit protrusion; 421. Lower oil hole; 43. Oil storage tank; 44. Upper crossbeam; 45. Lower crossbeam; 46. Oil clearance; 5. Rolling element. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0028] It should be noted that the directional terms such as left, right, up, down, front and back in the embodiments of the present invention are merely relative concepts or are based on the normal use state of the product, that is, the direction of movement of the product, and should not be considered as limiting.
[0029] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of the present invention not only refer to changes in position, but also include movements such as rotation and rolling in which there is no relative change in position but the state is changed.
[0030] Finally, it should be noted that when a component is referred to as being "located on" or "disposed on" another component, it can be on the other component or there may be an intervening component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there may be an intervening component.
[0031] like Figures 1 to 5 A high-load dual-roller bearing cage is shown. The cage comprises two opposing annular frames 1 and a plurality of window beams 2 connecting the two annular frames 1. Window apertures 3 for mounting rolling elements 5 are formed between adjacent window beams 2. An annular crossbeam 4 connecting the window beams 2 is provided midway between the two annular frames 1. The crossbeam 4 separates the window apertures 3 into upper and lower window apertures 31 and 32, enhancing support stability for the rolling elements 5. Each window beam 2 has an upper protrusion 21 on its right side facing the upper window aperture 31, and a lower protrusion 22 on its left side facing the lower window aperture 32. The bottom of the rolling element 5 within the upper window aperture 31 abuts against the top of the lower protrusion 22 and the annular crossbeam 4. The top of the rolling element 5 within the lower window aperture 32 abuts against the bottom of the upper protrusion 21 and the annular crossbeam 4. The two rolling elements 5 within each window aperture 3 are arranged in a parallel, staggered arrangement, improving the stability and reliability of the bearing operation, increasing the bearing's load capacity, and extending its service life.
[0032] In one embodiment, an annular crossbeam 4 is provided to separate the window aperture 3 into an upper window aperture 31 and a lower window aperture 32. Two rolling elements 5 are placed within each window aperture 3, thereby increasing the bearing's load capacity. Furthermore, the annular crossbeam 4 is installed midway between the two annular frames 1, enhancing the structural strength of the bearing cage and facilitating the stable operation of the rolling elements 5 installed within the upper and lower window apertures 31 and 32. Upper and lower protrusions 21 and 22 protrude from either side of the window beam 2, increasing its structural strength and limiting the misaligned arrangement of the rolling elements 5, thereby improving the stability of the bearing's operation.
[0033] Preferably, the annular frame 1 and the annular crossbeam 4 both have an upper limit protrusion 41 facing the upper window hole 31 and a lower limit protrusion 42 facing the lower window hole 32, and the upper and lower sides of the rolling body 5 are respectively in contact with the upper limit protrusion 41 or the lower limit protrusion 42 to reduce the contact area between the rolling body 5 and the annular frame 1 and the annular crossbeam 4, thereby increasing the friction resistance of the rolling body 5 during operation.
[0034] In one embodiment, the top surface of the rolling body 5 located in the upper window hole 31 abuts against the upper limit protrusion 41 of the annular frame 1, and the bottom surface abuts against the upper limit protrusion 41 of the annular beam 4; the top surface of the rolling body 5 located in the lower window hole 32 abuts against the lower limit protrusion 42 of the annular beam 4, and the bottom surface abuts against the lower limit protrusion 42 of the annular frame 1.
[0035] Preferably, an oil storage groove 43 is formed between the two sides of the upper limit protrusion 41 and the window beam 2, and an oil storage groove 43 is formed between the two sides of the lower limit protrusion 42 and the window beam 2, which increases the residence time of the lubricating oil in the bearing retainer and improves the lubrication effect on the rolling element 5.
[0036] In one embodiment, since the upper limit protrusion 41 protrudes from the annular frame 1 or the annular crossbeam 4, an oil storage groove 43 will be formed between the upper limit protrusion 41 and the window beams 2 on both sides thereof, and the lower limit protrusion 42 protrudes from the annular frame 1 and the annular crossbeam 4, and an oil storage groove 43 will be formed between the lower limit protrusion 42 and the window beams 2 on both sides thereof. In this way, the four corners of each upper window hole 31 and the lower window hole 32 are provided with an oil storage groove 43, which fully increases the residence time of the lubricating oil in the bearing retainer, thereby improving the lubrication effect on the rolling element 5 and reducing the friction resistance between the rolling element 5 and the bearing retainer.
[0037] Preferably, the annular crossbeam 4 includes an upper crossbeam 44 and a lower crossbeam 45 , and an oil gap 46 is formed between the upper crossbeam 44 and the lower crossbeam 45 to increase the fluidity of the lubricating oil in the bearing cage and improve the lubrication effect on the rolling elements 5 .
[0038] Preferably, the upper limit projection 41 has an upper oil hole 411 that passes through the upper limit projection 41, the annular frame 1, and the upper crossbeam 44. The lower limit projection 42 has a lower oil hole 421 that passes through the lower limit projection 42, the annular frame 1, and the lower crossbeam 45. The axes of the upper oil hole 411 and the lower oil hole 421 are both vertically arranged and parallel to each other. The axes of the rolling elements 5 located in the upper window hole 31 and the rolling elements 5 located in the lower window hole 32 are parallel to each other. The staggered arrangement of the rolling elements 5 improves the stability and reliability of the bearing during operation.
[0039] In one embodiment, it should also be noted that, because the two rolling elements 5 are staggered within the window aperture 3, the upper oil hole 411 is located midway between the upper limit projection 41, and the lower oil hole 421 is located midway between the lower limit projection 42. Consequently, the axes of the upper and lower oil holes 411 and 421 do not coincide. An oil gap 46 is provided between the upper and lower crossbeams 44 and 45 to connect the upper and lower oil holes 411 and 421, ensuring adequate fluidity of the lubricating oil within the bearing retainer.
[0040] Preferably, the width of the oil gap 46 is smaller than the thickness of the upper crossbeam 44 or the lower crossbeam 45 , so as to ensure the basic structural strength of the annular crossbeam 4 .
[0041] Preferably, the lower protrusion 22 of the window beam 2 extends to be flush with the surface of the upper limit protrusion 41, and the upper protrusion 21 of the window beam 2 extends to be flush with the surface of the lower limit protrusion 42. The upper limit protrusion 41 and the lower protrusion 22 jointly support the rolling element 5 located in the upper window hole 31, and the lower limit protrusion 42 and the upper protrusion 21 jointly support the rolling element 5 located in the lower window hole 32, thereby improving the stability of the rolling element 5 during rotation.
[0042] In one embodiment, the bottom of the rolling body 5 located in the upper window hole 31 abuts against the top of the upper limit protrusion 41 and the lower protrusion 22 at the same time; the top of the rolling body 5 located in the lower window hole 32 abuts against the bottom of the lower limit protrusion 42 and the upper protrusion 21 at the same time.
[0043] Preferably, oil grooves 23 are provided on the window beams 2 on both sides of the upper window hole 31 and on the window beams 2 on both sides of the lower window hole 32 to improve the lubrication effect of the lubricating oil on the rolling elements 5 .
[0044] Preferably, the width of the oil groove 23 is the same as the thickness of the window beam 2, ensuring that the oil groove 23 can communicate with the inner and outer sides of the bearing retainer.
[0045] In one embodiment, by providing an oil groove 23 on the window beam 2, the fluidity of the lubricating oil in the bearing cage is improved, thereby improving the lubrication effect on the rolling element 5. Providing the oil groove 23 on the window beam 2 can effectively reduce the contact area between the rolling element 5 and the window beam 2, thereby reducing the frictional resistance of the rolling element 5 during operation.
[0046] When using the aforementioned high-load dual-roller bearing cage, two rolling elements 5 are positioned within each window 3 of the bearing cage, enhancing the load-bearing capacity of the double-row roller bearing. An annular crossbeam 4 separates the two rolling elements 5 within the window 3, improving support stability for the rolling elements 5. Upper and lower protrusions 21 and 22 are provided on the sidewalls of the window beam 2 to enhance the structural strength of the window beam 2. The staggered arrangement of the rolling elements 5 within the window pores 3 significantly improves the operational stability and reliability of the bearing structure, increasing load capacity, reducing noise, and significantly extending the bearing's service life.
[0047] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.
Claims
1. A high-load double-roller bearing cage, comprising two oppositely disposed annular frames and a plurality of window beams connecting the two annular frames, wherein window holes for mounting rolling elements are formed between adjacent window beams, characterized in that: An annular crossbeam connecting the window beams is provided in the middle of the two annular frames, and the annular crossbeam separates the window holes into an upper window hole and a lower window hole; The right side of each window beam has an upper protrusion facing the upper window hole, and the left side of each window beam has a lower protrusion facing the lower window hole. The bottom of the rolling body located in the upper window hole abuts against the top of the lower protrusion and the annular crossbeam, and the top of the rolling body located in the lower window hole abuts against the bottom of the upper protrusion and the annular crossbeam. The two rolling bodies in each window hole are arranged in parallel and staggered.
2. A high-load double roller bearing cage according to claim 1, characterized in that: The annular frame and the annular crossbeam both have an upper limit protrusion facing the upper window hole and a lower limit protrusion facing the lower window hole, and the upper and lower sides of the rolling body are respectively in contact with the upper limit protrusion or the lower limit protrusion.
3. A high-load double roller bearing cage according to claim 2, characterized in that: An oil storage groove is formed between the two sides of the upper limit protrusion and the window beam, and an oil storage groove is formed between the two sides of the lower limit protrusion and the window beam.
4. A high-load double roller bearing cage according to claim 3, characterized in that: The annular crossbeam includes an upper crossbeam and a lower crossbeam, and an oil-flowing gap is formed between the upper crossbeam and the lower crossbeam.
5. A high-load double roller bearing cage according to claim 4, characterized in that: The upper limit protrusion has an upper oil hole that passes through the upper limit protrusion, the annular frame and the upper crossbeam, and the lower limit protrusion has a lower oil hole that passes through the lower limit protrusion, the annular frame and the lower crossbeam. The axis of the upper oil hole and the axis of the lower oil hole are both vertically arranged and parallel to each other.
6. A high-load double roller bearing cage according to claim 4, characterized in that: The width of the oil-passing gap is smaller than the thickness of the upper beam or the lower beam.
7. A high-load double roller bearing cage according to claim 5, characterized in that: The lower protrusion of the window beam extends to be flush with the surface of the upper limit protrusion, and the upper protrusion of the window beam extends to be flush with the surface of the lower limit protrusion.
8. The high-load double roller bearing cage according to claim 1, characterized in that: Oil grooves are provided on the window beams on both sides of the upper window hole and on the window beams on both sides of the lower window hole.
9. A high-load double roller bearing cage according to claim 8, characterized in that: The width of the oil passage groove is the same as the thickness of the window beam.