High-speed light-load cylindrical roller bearing retainer

Abstract

The utility model discloses a high-speed light-load cylindrical roller bearing retainer, which comprises two flanges arranged in parallel and a plurality of window beams connected with the two flanges, the plurality of window beams are uniformly arranged at intervals along the circumferential direction of the flanges, a window hole for accommodating a cylindrical roller is formed between every two adjacent window beams, and the cylindrical roller is arranged in the window hole. The window beam is provided with a plurality of locking opening areas arranged at intervals in the length direction and non-locking opening areas arranged between every two adjacent locking opening areas, and each locking opening area comprises a first locking opening part, an arc pocket hole part and a second locking opening part which are sequentially arranged from the radial outer side to the radial inner side of the flange. The high-speed light-load cylindrical roller bearing retainer provided by the utility model has the advantages that the precision can be improved, and the abrasion can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a cylindrical roller bearing retainer for high speed and light load. Background Art

[0002] like Figure 1 As shown in the figure, the cylindrical roller bearing consists of four parts: outer ring 300, inner ring 400, cylindrical roller 200 and cage 100. With the continuous expansion of the application field of cylindrical roller bearings, the application scenarios of bearings are becoming more and more complex. The working scenarios of bearings have changed from traditional conventional applications to the current requirements of high speed, light load, wide temperature range, etc., that is, the speed of the bearing is extremely high during operation, exceeding the maximum speed that the bearing can withstand, and at the same time the load is relatively low P r / / C r ≤0.07, operating temperature is -55℃~+150℃.

[0003] In the past, the copper cages of conventional cylindrical roller bearings mostly adopted a straight window hole and single-sided lock design. Under high-speed and light-load conditions, there was severe wear between the cylindrical roller and the cage, and slippage was likely to occur between the cylindrical roller and the cage, causing the bearing to not work properly.

[0004] In order to solve the above problems, the present utility model is provided. Utility Model Content

[0005] The utility model aims to provide a high-speed and light-load cylindrical roller bearing cage, which can improve the cage precision and reduce the wear between the cylindrical roller and the cage.

[0006] Based on the above problems, the technical solution provided by the utility model is:

[0007] A high-speed light-load cylindrical roller bearing cage comprises two ribs arranged in parallel with each other and a plurality of window beams connecting the two ribs, wherein the plurality of window beams are evenly spaced along the circumference of the ribs, and a window hole for accommodating a cylindrical roller is formed between two adjacent window beams.

[0008] The window beam is provided with a plurality of locking areas arranged at intervals along the length direction and a non-locking area arranged between two adjacent locking areas. The locking area includes a first locking portion, an arc pocket portion and a second locking portion which are arranged in sequence from the radial outer side to the inner side of the retaining edge.

[0009] In some of the embodiments, the non-locking area is provided with a groove portion connected to the arc pocket portion.

[0010] In some embodiments, the groove portion is an arc-shaped groove matching the cylindrical roller, and the length of the groove portion along the circumferential direction of the cylindrical roller is smaller than that of the arc pocket portion.

[0011] In some of the embodiments, an assembly guide portion is provided on the window beam near the second locking portion, and the assembly guide portion gradually expands from the radial outer side to the inner side of the retaining edge.

[0012] In some embodiments, the diameter of the cylindrical roller is D mm, the diameter of the arc-shaped pocket portion is D+0.1(+0.05 / 0)mm, the width between the two first locking portions is D-0.2(+0.05 / 0)mm, and the width between the two second locking portions is D-0.2(+0.05 / 0)mm.

[0013] In some embodiments, the width of the first locking portion is ≥ 0.3 mm, and the width of the second locking portion is ≥ 0.5 mm.

[0014] In some of the embodiments, two locking areas are provided on the window beam and are respectively arranged at two ends of the length direction of the window beam.

[0015] In some embodiments, the length of the locking region is ≥ 0.4 times the length of the window hole.

[0016] In some of the embodiments, an arc-shaped groove portion is provided between the locking area and the retaining edge, and the locking area and the arc-shaped groove portion are connected at an obtuse angle.

[0017] In some embodiments, the radius of the paste groove portion is 0.8-1.2 mm.

[0018] Compared with the prior art, the advantages of the utility model are:

[0019] (1) A circular pocket is set in the window hole, and the two sides of the circular pocket are designed with locks. The cage is guided by cylindrical rollers, which can control higher cage accuracy;

[0020] (2) A groove is provided in the non-locking area to cooperate with the arc pocket to improve the accuracy of the cage;

[0021] (3) The locking area is set in sections, and a non-locking area is set between two adjacent locking areas, which can reduce the contact area between the cylindrical roller and the cage and reduce wear;

[0022] (4) Grooves are provided at both ends of the window hole to further reduce the contact area between the cylindrical roller and the cage, thereby reducing wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a cylindrical roller bearing in the prior art;

[0025] Figure 2 This is one of the structural schematic diagrams of an embodiment of a high-speed and light-load cylindrical roller bearing cage of the utility model;

[0026] Figure 3 for Figure 2 The local enlarged view of point I in the middle;

[0027] Figure 4 This is the second structural diagram of the embodiment of the utility model;

[0028] Figure 5 This is a schematic diagram of the installation structure of an embodiment of the utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the cylindrical roller and the window hole in the embodiment of the utility model;

[0030] in:

[0031] 100, cage; 200, cylindrical roller; 300, outer ring; 400, inner ring;

[0032] 1; side guard;

[0033] 2. Window beam; 2-1. Locking area; 2-1a. First locking part; 2-1b. Arc pocket part; 2-1c. Second locking part; 2-1d. Assembly guide part; 2-2. Non-locking area; 2-2a. Groove part;

[0034] 3. Arc-shaped groove;

[0035] 4. Cylindrical roller. DETAILED DESCRIPTION

[0036] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the utility model and are not limited to the scope of the utility model. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0037] like Figures 2 to 5As shown, an embodiment of the utility model is provided, which provides a high-speed light-load cylindrical roller bearing retainer, including two ribs 1 arranged parallel to each other and a plurality of window beams 2 connecting the two ribs 1, the plurality of window beams 2 are evenly spaced along the circumference of the ribs 1, and a window hole for accommodating a cylindrical roller 4 is formed between two adjacent window beams 2.

[0038] The window beam 2 is provided with a plurality of locking areas 2-1 arranged at intervals along the length direction and a non-locking area 2-2 arranged between two adjacent locking areas 2-1. Figure 6 As shown, the locking area 2-1 includes a first locking portion 2-1a, an arc pocket portion 2-1b, and a second locking portion 2-1c arranged in sequence from the radial outer side to the radial inner side of the rib 1. The cylindrical roller 4 is placed in the arc pocket portion 2-1b and is limited in the window hole by the first locking portion 2-1a and the second locking portion 2-1c, so that the cage is guided by the cylindrical roller 4. Compared with the cage outer diameter guidance, the cage accuracy can be improved. In addition, the locking area 2-1 in the window hole is arranged in sections, which can reduce the contact area between the cylindrical roller 4 and the cage and reduce wear.

[0039] For the convenience of processing, two locking areas 2 - 1 are provided on the window beam 2 and are arranged at two ends of the length direction of the window beam 2 respectively. The length of the locking area 2 - 1 is ≥ 0.4 times the length of the window hole.

[0040] The diameter of the cylindrical roller 4 is D mm, the diameter of the arc pocket portion 2-1b is D+0.1 (+0.05 / 0) mm, the width between the two first locking portions 2-1a is D-0.2 (+0.05 / 0) mm, and the width between the two second locking portions 2-1c is D-0.2 (+0.05 / 0) mm. The width of the first locking portion 2-1a is ≥0.3 mm, and the width of the second locking portion 2-1c is ≥0.5 mm.

[0041] In order to further optimize the implementation effect of the utility model, a groove portion 2-2a connected to the arc pocket portion 2-1b is provided in the non-locking area 2-2. The groove portion 2-2a is an arc-shaped groove matching the cylindrical roller 4, and the length of the groove portion 2-2a along the circumferential direction of the cylindrical roller 4 is smaller than the arc pocket portion 2-1b. The accuracy of the retaining frame can be further improved by the cooperation between the groove portion 2-2 and the arc pocket portion 2-1b.

[0042] In order to facilitate the assembly of the cylindrical roller 4, an assembly guide portion 2-1d is provided on the window hole near the second locking portion 2-1c. The assembly guide portion 2-1d gradually expands from the radial outer side to the inner side of the rib 1.

[0043] In order to further optimize the implementation effect of the utility model and reduce the wear between the cylindrical roller 4 and the cage, an arc-shaped groove portion 3 is provided between the locking area 2-1 and the rib 1, and the locking area 2-1 and the arc-shaped groove portion 3 are connected at an obtuse angle. The radius of the arc-shaped groove portion 3 is preferably 0.8 to 1.2 mm. The arc-shaped groove portion 3 can reduce the contact area between the axial ends of the cylindrical roller 4 and the cage, thereby reducing wear.

[0044] In summary, the cage is guided by cylindrical rollers, which can improve the cage accuracy, reduce the contact area between the cylindrical rollers and the cage, thereby reducing wear, and is suitable for high-speed and light-load conditions.

[0045] The above examples are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-speed light-load cylindrical roller bearing cage, comprising two ribs arranged in parallel with each other and a plurality of window beams connecting the two ribs, wherein the plurality of window beams are evenly spaced along the circumference of the ribs, and a window hole for accommodating a cylindrical roller is formed between two adjacent window beams, characterized in that: The window beam is provided with a plurality of locking areas arranged at intervals along the length direction and a non-locking area arranged between two adjacent locking areas. The locking area includes a first locking portion, an arc pocket portion and a second locking portion which are arranged in sequence from the radial outer side to the inner side of the retaining edge.

2. The high speed and light load cylindrical roller bearing cage according to claim 1, characterized in that: The non-locking area is provided with a groove portion connected to the arc pocket portion.

3. The high speed and light load cylindrical roller bearing cage according to claim 2, characterized in that: The groove portion is an arc-shaped groove matching the cylindrical roller, and the length of the groove portion along the circumferential direction of the cylindrical roller needle is smaller than the arc pocket portion.

4. The high speed and light load cylindrical roller bearing cage according to claim 3 is characterized in that: An assembly guide portion is provided on the window beam near the second locking portion, and the assembly guide portion is gradually expanded from the radial outer side to the inner side of the retaining edge.

5. The high speed and light load cylindrical roller bearing cage according to claim 1, characterized in that: The diameter of the cylindrical roller is Dmm, the diameter of the arc pocket is D+0.1(+0.05 / 0)mm, the width between the two first locking parts is D-0.2(+0.05 / 0)mm, and the width between the two second locking parts is D-0.2(+0.05 / 0)mm.

6. The high speed and light load cylindrical roller bearing cage according to claim 5, characterized in that: The width of the first locking portion is ≥0.3 mm, and the width of the second locking portion is ≥0.5 mm.

7. The high speed and light load cylindrical roller bearing cage according to claim 1, characterized in that: The window beam is provided with two locking areas, which are respectively arranged at two ends of the length direction of the window beam.

8. The high speed and light load cylindrical roller bearing cage according to claim 7, characterized in that: The length of the locking area is ≥0.4 times the length of the window hole.

9. The high speed and light load cylindrical roller bearing cage according to claim 7, characterized in that: An arc-shaped groove portion is provided between the locking area and the retaining edge, and the locking area and the arc-shaped groove portion are connected via an obtuse angle.

10. The high speed and light load cylindrical roller bearing cage according to claim 9, characterized in that: The radius of the arc-shaped groove portion is 0.8 to 1.2 mm.

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