High-rotating-speed cylindrical roller bearing

Abstract

The utility model discloses a high-rotating-speed cylindrical roller bearing which comprises an outer ring, an inner ring is arranged on the inner side of the outer ring, a limiting ring groove is formed in the side, facing the outer ring, of the inner ring, and roller bodies arranged at equal intervals are arranged between the limiting ring groove and the interior of the outer ring in a rolling mode. An integrated retainer is arranged in a gap of the roller main body, and a retainer seat is clamped on the other side of the integrated retainer. The blind holes are formed in the two sides of the roller body to reduce the mass of a single roller so as to reduce the mass of the whole bearing, and the blind holes are used in cooperation with the fillet rivet holes and the fillet rivet heads, so that the integrated retainer and the retainer base are more convenient to disassemble and assemble, meanwhile, the rotating precision is improved, and the device has the advantages of reducing the overall mass and reducing the cost. Operation abrasion is reduced, the service life is prolonged, the retainer is more convenient to disassemble and assemble, and maintenance operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of high-speed bearings, and more specifically to a high-speed cylindrical roller bearing. Background Art

[0002] Rolling bearings with a Dmn value exceeding 1.0x106mm.r / min are usually called high-speed bearings. Here Dm is the average diameter of the rolling bearing, and n is the speed of the inner ring. In practical applications, the Dmn value of high-speed imported bearings has reached 3.0x106mm.r / min, and cylindrical roller bearings refer to rollers that are cylindrical.

[0003] However, in the prior art, such bearings have cylindrical rollers, so their overall mass is relatively large. During use, the wear caused by their own mass will increase, which will affect their service life. In addition, the clamping method on both sides of the retaining frame adopts a rivet structure, which is inconvenient to operate during maintenance and assembly and is not convenient. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a high-speed cylindrical roller bearing, which can reduce operating wear and extend service life, and the cage disassembly and assembly method is more convenient, and has the advantage of easy maintenance operation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-speed cylindrical roller bearing comprises an outer ring, an inner ring is arranged on the inner side of the outer ring, a limiting ring groove is provided on the side of the inner ring facing the outer ring, roller bodies arranged equidistantly are rollingly arranged between the limiting ring groove and the inside of the outer ring, an integrated retaining frame is provided between the gaps of the roller bodies, a retaining frame seat is clamped on the other side of the integrated retaining frame, and blind holes are provided at both ends of the roller bodies.

[0007] As a further description of the above technical solution: the length of the blind hole is one third of the total length of the roller body, and the diameter of the blind hole is one quarter of the diameter of the roller body.

[0008] As a further description of the above technical solution: the end of the integrated retainer is fixedly connected with equidistantly arranged rounded rivet heads, the retainer seat is provided with equidistantly arranged rounded rivet holes, and the rounded rivet heads are clamped into the inside of the rounded rivet holes.

[0009] As a further description of the above technical solution: a weight-reducing ring groove is provided on the outer side surface of the outer ring.

[0010] As a further description of the above technical solution: the roller body is cylindrical, and the roller body is a ceramic cylinder made of silicon nitride ceramic.

[0011] As a further description of the above technical solution: both side edges of the inner side surface of the outer ring are provided with inclined slopes.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] This solution reduces the mass of a single roller by setting blind holes on both sides of the roller body, so as to reduce the mass of the entire bearing. The use of rounded rivet holes and rounded rivet heads makes it easier to disassemble and assemble the integrated cage and cage seat, while improving the rotation accuracy. This enables the device to reduce the overall mass of the device, reduce operating wear, extend service life, and make the cage disassembly and assembly more convenient, which is convenient for maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0016] Figure 3 It is a partial three-dimensional cross-sectional structural schematic diagram of the utility model;

[0017] Figure 4 It is a side structural schematic diagram of the utility model.

[0018] Description of the numbers in the figure:

[0019] 1. Outer ring; 2. Inner ring; 3. Limiting ring groove; 4. Roller body; 5. Integrated cage; 51. Rounded rivet head; 6. Cage seat; 61. Rounded rivet hole; 7. Blind hole; 8. Weight reduction ring groove; 9. Slope. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] See also Figures 1 to 4 In the utility model, a high-speed cylindrical roller bearing comprises an outer ring 1, an inner ring 2 is arranged on the inner side of the outer ring 1, a limiting ring groove 3 is provided on the side of the inner ring 2 facing the outer ring 1, roller bodies 4 arranged equidistantly are arranged for rolling between the limiting ring groove 3 and the inner part of the outer ring 1, an integrated retainer 5 is provided between the gaps of the roller bodies 4, a retainer seat 6 is clamped on the other side of the integrated retainer 5, and blind holes 7 are provided at both ends of the roller bodies 4.

[0022] In the utility model, the outer ring 1 cooperates with the inner ring 2 and the roller body 4 to form a bearing body, and the integrated retainer 5 cooperates with the retainer seat 6 to hold and constrain the rotation path of the roller body 4, so that it runs stably. Since blind holes 7 are provided at both ends of the roller body 4, the weight of the entire bearing is reduced, so that the device has the advantages of reducing the overall weight of the device, reducing operating wear, and extending the service life. The retainer is more convenient to disassemble and assemble, and maintenance operations are convenient. The problem of the roller in the prior art being cylindrical and therefore having a larger overall weight, which aggravates the wear caused by its own weight during use and affects the service life, and the retainer adopts a rivet structure for the clamping method on both sides, which is inconvenient to operate during maintenance and assembly and is not convenient.

[0023] See also Figure 3 , wherein: the length of the blind hole 7 is one third of the total length of the roller body 4 , and the diameter of the blind hole 7 is one quarter of the diameter of the roller body 4 .

[0024] In the utility model, the length of the blind hole 7 is one third of the total length of the roller body 4, and the diameter of the blind hole 7 is one quarter of the diameter of the roller body 4, which reduces the mass of a single roller body 4 while ensuring the strength of the roller body 4 and the stability of the bearing operation.

[0025] See also Figure 2 and Figure 4 , wherein: the end of the integrated retainer 5 is fixedly connected with equidistantly arranged rounded rivet heads 51 , the retainer seat 6 is provided with equidistantly arranged rounded rivet holes 61 , and the rounded rivet heads 51 are clamped into the inside of the rounded rivet holes 61 .

[0026] In the utility model, the rounded rivet head 51 cooperates with the rounded rivet hole 61 to achieve rounded head self-riveting clamping, which is convenient for loading and unloading, has good stability, and improves the rotation accuracy.

[0027] See also Figure 1 , wherein: a weight-reducing annular groove 8 is provided on the outer side surface of the outer ring 1.

[0028] In the present invention, the mass of the outer ring 1 is reduced by the weight-reducing ring groove 8, so as to reduce the mass of the entire bearing.

[0029] See also Figure 1 , wherein: the roller body 4 is cylindrical, and the roller body 4 is a ceramic cylinder made of silicon nitride ceramic.

[0030] In the utility model, the roller body 4 is a ceramic cylinder made of silicon nitride ceramic, so the rotation speed limit of the bearing is improved, and the strength and stability of the roller body 4 at high rotation speed are improved.

[0031] See also Figure 1, wherein: both side edges of the inner side surface of the outer ring 1 are provided with inclined slope surfaces 9.

[0032] In the utility model, the inclined slope 9 facilitates the loading and unloading of the roller body 4 and the operation.

[0033] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A high-speed cylindrical roller bearing, comprising an outer ring (1), characterized in that: An inner ring (2) is arranged on the inner side of the outer ring (1); a limiting ring groove (3) is provided on the side of the inner ring (2) facing the outer ring (1); roller bodies (4) are arranged equidistantly and rollingly between the limiting ring groove (3) and the inside of the outer ring (1); an integrated retaining frame (5) is arranged between the gaps of the roller bodies (4); a retaining frame seat (6) is clamped on the other side of the integrated retaining frame (5); and blind holes (7) are provided at both ends of the roller bodies (4).

2. A high speed cylindrical roller bearing according to claim 1, characterized in that: The length of the blind hole (7) is one third of the total length of the roller body (4), and the diameter of the blind hole (7) is one quarter of the diameter of the roller body (4).

3. A high speed cylindrical roller bearing according to claim 1, characterized in that: The end of the integrated retainer (5) is fixedly connected with rounded rivet heads (51) arranged at equal distances, the retainer seat (6) is provided with rounded rivet holes (61) arranged at equal distances, and the rounded rivet heads (51) are clamped into the inside of the rounded rivet holes (61).

4. A high speed cylindrical roller bearing according to claim 1, characterized in that: The outer side surface of the outer ring (1) is provided with a weight-reducing ring groove (8).

5. The high-speed cylindrical roller bearing according to claim 1, characterized in that: The roller body (4) is cylindrical and is a ceramic cylinder made of silicon nitride ceramic.

6. A high speed cylindrical roller bearing according to claim 1, characterized in that: Both side edges of the inner side surface of the outer ring (1) are provided with inclined slope surfaces (9).

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