High-strength roller bearing

Abstract

The utility model relates to a high-strength roller bearing which comprises an inner ring, an outer ring, a cylindrical roller and a retainer, the outer ring is located on the outer side of the inner ring in the radial direction of the high-strength roller bearing, and the cylindrical roller is located between the outer ring and the inner ring in the radial direction of the high-strength roller bearing. The retainer is also located between the outer ring and the inner ring in the radial direction of the high-strength roller bearing and used for retaining the cylindrical rollers, the retainer comprises two oppositely-arranged supporting rings and a plurality of supporting beams used for connecting the two supporting rings, window holes used for installing the cylindrical rollers are formed between the two supporting rings and the two adjacent supporting beams, and the window holes are communicated with the cylindrical rollers. Reinforcing protruding parts in contact fit with the cylindrical rollers are arranged on the two sides of the supporting beam respectively, mounting faces in contact fit with the cylindrical rollers are arranged on the reinforcing protruding parts, and oil storage sinking grooves are formed in the mounting faces. According to the bearing, the bending rigidity of the retainer is improved through the reinforcing protruding parts on the two sides of the supporting beam, and the strength of the bearing is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing technical field, especially a kind of high-strength roller bearing. BACKGROUND

[0002] Bearing is an important component in contemporary mechanical equipment, and its main function is to support mechanical rotating body.

[0003] At present, the existing cylindrical roller bearing is usually composed of an outer ring, an inner ring, cylindrical rollers and a retainer, and after the cylindrical rollers are assembled on the existing cylindrical roller bearing retainer, the window beam is deformed, cracked or even broken due to the centrifugal force, radial impact and radial vibration, which directly leads to the short service life of the cylindrical roller bearing retainer, and even causes safety risks. SUMMARY

[0004] In view of the problems in the prior art, the utility model provides a high-strength roller bearing.

[0005] The utility model discloses a high-strength roller bearing, which comprises an inner ring, an outer ring, cylindrical rollers and a retainer, the outer ring is located outside the inner ring in the radial direction of the high-strength roller bearing, the cylindrical rollers are located between the outer ring and the inner ring in the radial direction of the high-strength roller bearing, and the retainer is also located between the outer ring and the inner ring in the radial direction of the high-strength roller bearing and is used for retaining the cylindrical rollers, the retainer comprises two oppositely arranged support rings and a plurality of support beams for connecting the two support rings, the two support rings and the adjacent two support beams form a window for mounting the cylindrical rollers, the support beams are respectively provided with reinforcing protrusions in contact with the cylindrical rollers on both sides, the reinforcing protrusions are provided with mounting surfaces in contact with the cylindrical rollers, and the mounting surfaces are provided with oil storage grooves.

[0006] Further, the reinforcing protrusions are connected to the support beams through circular arcs at the upper and lower ends.

[0007] Further, the support rings are provided with mounting protrusions in contact with the cylindrical rollers.

[0008] Further, the mounting protrusions are provided with flow-through grooves in communication with the windows, and the support rings are provided with lubricating oil grooves in communication with the flow-through grooves.

[0009] Further, the lubricating oil grooves have a groove depth greater than that of the flow-through grooves.

[0010] Further, the cylindrical rollers are made of stainless steel.

[0011] Further, the inner ring and the outer ring are made of GCr15 steel.

[0012] The beneficial effects of the present application are: 1. The reinforcing protruding parts on both sides of the support beam of the present application increase the bending stiffness of the retainer, greatly improve the strength of the bearing, and the arc transition reduces stress concentration, and is suitable for heavy load working conditions.

[0013] 2. The oil storage groove of the mounting surface and the lubricating oil groove of the support ring form a double oil storage structure, ensuring continuous lubrication of the contact area between the cylindrical roller and the retainer, and reducing wear.

[0014] 3. The cylindrical roller of the present application uses stainless steel material, and the inner and outer rings use GCr15 steel, which improves the service life of the bearing in corrosive and high temperature environments. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a structural schematic view of the present application;

[0016] Fig. 2 is a partial structural schematic view of the retainer of the utility model;

[0017] Fig. 3 is a partial sectional view of the retainer of the utility model.

[0018] Marked in the figure: 1, outer ring, 2, inner ring, 3, retainer, 4, cylindrical roller, 31, support ring, 32, support beam, 33, window hole, 34, reinforcing protruding part, 341, mounting surface, 342, oil storage groove, 35, mounting protruding part, 36, flow-through groove, 37, lubricating oil groove. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0020] Please refer to Figs. 1-3The utility model discloses a high strength roller bearing, including inner race 2, outer ring 1, cylindrical roller 4 and retainer 3, cylindrical roller 4 is multiple, outer ring 1 is located the outside of inner race 2 in the radial direction of high strength roller bearing, cylindrical roller 4 is located between outer ring 1 and inner race 2 in the radial direction of high strength roller bearing, and retainer 3 is also located between outer ring 1 and inner race 2 in the radial direction of high strength roller bearing, and is used for keeping cylindrical roller 4, and retainer 3 includes two opposite support ring 31 and multiple support beam 32 for connecting two support ring 31, the window hole 33 for installing cylindrical roller 4 is formed between two support ring 31 and adjacent two support beam 32, and the both sides of support beam 32 are equipped with the reinforcing convex part 34 of contact cooperation with cylindrical roller 4, and the mounting surface 341 of contact cooperation with cylindrical roller 4 is formed on reinforcing convex part 34, and the oil storage groove 342 is equipped with on mounting surface 341.

[0021] Wherein, the reinforcing convex part 34 upper and lower ends are connected through arc transition with support beam 32 respectively.

[0022] Specifically, the mounting convex part 35 of contact cooperation with cylindrical roller 4 is equipped on the support ring 31, the flow-through groove 36 that communicates with the window hole 33 is equipped on the mounting convex part 35, and the lubricating oil groove 37 that communicates with the flow-through groove 36 is equipped on the support ring 31. The groove depth of the lubricating oil groove 37 is greater than the groove depth of the flow-through groove 36. The support ring 31, the reinforcing convex part 34 and the mounting convex part 35 are integrally made. It should be noted that the parts not described in detail in the present application are prior art.

[0023] In addition, the cylindrical roller 4 is made of stainless steel. The inner race 2 and the outer ring 1 are both made of GCr15 steel. Since the inner race 2 and the outer ring 1 are both made of GCr15 steel, the GCr15 steel has high hardness, high wear resistance and high heat resistance, thereby effectively ensuring the strength of the inner race 2 and the outer ring 1, so that the bearing has high strength and carrying capacity.

[0024] The inner race 2 and the outer ring 1 of the present application transmit radial load through the cylindrical roller 4, the reinforcing convex part 34 supports the cylindrical roller 4 and disperses stress. When assembling the bearing, lubricating grease is injected into the lubricating oil groove 37, the flow-through groove 36 and the oil storage groove 342 in advance, and when the cylindrical roller 4 rotates, the lubricating grease in the oil storage groove 342 and the lubricating oil groove 37 is brought into the contact area to form an oil film to reduce friction.

[0025] It should be noted that the above embodiments are only used to illustrate the utility model, but the utility model is not limited to the above embodiments, and any simple modification, equivalent change and modification according to the technical essence of the utility model are all within the protection scope of the utility model.

Claims

1. A high-strength roller bearing comprising an inner ring (2), an outer ring (1), cylindrical rollers (4) and a cage (3), the outer ring (1) being located radially outward of the inner ring (2), the cylindrical rollers (4) being located radially between the outer ring (1) and the inner ring (2), and the cage (3) also being located radially between the outer ring (1) and the inner ring (2) and serving to retain the cylindrical rollers (4), characterized in that, The cage (3) comprises two oppositely arranged support rings (31) and a plurality of support beams (32) for connecting the two support rings (31), a window hole (33) for mounting the cylindrical roller (4) is formed between the two support rings (31) and the adjacent two support beams (32), the support beam (32) is provided with a reinforcing protrusion (34) on both sides for contact and cooperation with the cylindrical roller (4), the reinforcing protrusion (34) is provided with a mounting surface (341) for contact and cooperation with the cylindrical roller (4), and the mounting surface (341) is provided with an oil storage groove (342).

2. A high strength roller bearing according to claim 1, wherein: The upper and lower ends of the reinforcing protrusion (34) are connected to the support beam (32) through a circular arc transition, respectively.

3. A high strength roller bearing according to claim 1, wherein: The support ring (31) is provided with a mounting protrusion (35) for contact and cooperation with the cylindrical roller (4).

4. A high strength roller bearing according to claim 3, wherein: The mounting protrusion (35) is provided with a flow-through groove (36) in communication with the window hole (33), and the support ring (31) is provided with a lubricating oil groove (37) in communication with the flow-through groove (36).

5. A high strength roller bearing according to claim 4, wherein: The groove depth of the lubricating oil groove (37) is greater than the groove depth of the flow-through groove (36).

6. A high strength roller bearing according to claim 1, wherein: The cylindrical roller (4) is made of stainless steel material.

7. A high strength roller bearing according to claim 1, wherein: The inner ring (2) and the outer ring (1) are both made of GCr15 steel.

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