Single-row type retainer unit, bearing retainer and bearing

Abstract

The utility model discloses a single-row type retainer unit, a bearing retainer and a bearing, which adopt the single-row type retainer unit, and compared with the traditional two-row and multi-row structure, the single-row type retainer unit has the advantages that the structure is greatly simplified, and the problem of difficulty in die production is solved; the four corners of the window hole are concave inwards to form first oil collecting grooves, the right-angle inner angle structure is changed, external collision impact force is effectively dispersed, the possibility of damage and cracking of the retainer is reduced, the service life is prolonged, and the bearing system stability is improved. Fixing parts and second oil collecting grooves are arranged on the inner walls of the upper side and the lower side of the window hole, the contact area of the roller and the retainer is reduced, friction, heat and abrasion are reduced, and the two oil collecting grooves are matched to achieve efficient lubrication and relieve the problems caused by insufficient lubrication; the first concave parts enable the adjacent retainer unit main bodies to form wrapping parts, the number of the main bodies is reduced, and the overall weight is reduced; the second concave part realizes oil storage and reduces oil scraping, lubricating oil is uniformly distributed in the upper and lower concave parts, and the lubricating effect is improved. The utility model has obvious advantages in structure and performance.

Description

Technical Field

[0001] This utility model relates to the field of bearing cage technology, specifically to a single-row cage unit, a bearing cage, and a bearing. Background Technology

[0002] As a key component of the bearing system, the bearing cage is a core element in ensuring the stable performance of the bearing. Existing bearing cages are usually composed of two or more rows of cage units, each with a window for mounting the rollers. While this structure meets application requirements to some extent, it presents challenges in mold production and results in a large overall weight of the bearing because each roller requires a separate cage unit for fixation.

[0003] From the perspective of the cage unit's structural design, the four inner corners of the existing aperture are all right-angled. Since the cage bears complex dynamic loads and mechanical stresses along with the bearing during actual operation, these right-angled inner corners become weak points in the entire structure. When subjected to external impacts, these corners cannot effectively disperse the impact force, making them prone to damage and cracking. This not only reduces the cage's service life but may also seriously affect the stability of the entire bearing system. Furthermore, the contact area between the existing cage unit and the rollers is too large. This excessive contact area intensifies friction during bearing operation, generating a large amount of heat, accelerating the wear of both the cage and rollers, and reducing their mechanical performance. Simultaneously, due to the limitations of the current structure, lubricating oil cannot easily reach the rollers, failing to achieve comprehensive and efficient lubrication, further exacerbating internal bearing wear and energy loss.

[0004] Therefore, there is an urgent need for a single-row cage unit, bearing cage, and bearing. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a single-row cage unit, a bearing cage and a bearing.

[0006] This utility model discloses a single-row cage unit, including a cage unit body;

[0007] The main body of the retainer unit has a frame structure, and a window is formed inside for placing the roller; the four corners of the window are recessed to form a first oil collection groove; the upper and lower inner walls of the window are both provided with a fixing part protruding inward, and the fixing part is recessed to form a second oil collection groove.

[0008] The outer walls on the left and right sides of the main body of the cage unit are provided with first recesses. Two first recesses that are close to each other on two adjacent main bodies of the cage unit cooperate to form a wrapping part, which is used to wrap the roller.

[0009] The outer walls of the upper and lower sides of the main body of the cage unit are provided with a second recess on the side near the outer ring. The second recess is used for oil storage, uniform lubrication and oil scratch prevention.

[0010] As a further improvement of this utility model, the inner wall of the side wall between the upper and lower first oil collection grooves on the same side of the main body of the retainer unit is formed with a protrusion, and the protrusions on both sides abut against the roller.

[0011] As a further improvement of this utility model, the first concave portion extends along the height direction of the main body of the cage unit; and the concave curvature of the first concave portion is adapted to the outer contour curvature of the roller.

[0012] As a further improvement of this utility model, the fixing part is in contact with the roller at the window hole, and the two ends of the fixing part are respectively connected to the adjacent first oil collection groove; the fixing part has a second oil collection groove formed inward.

[0013] As a further improvement of this utility model, the second oil collection groove is formed in the middle of the fixed part.

[0014] As a further improvement of this utility model, both the upper and lower second concave portions are formed by the upper and lower sidewalls of the main body of the retainer unit along a certain arc, which are concave on the side of the outer ring.

[0015] As a further improvement of this utility model, the left and right side walls of the main body of the retainer unit are flush with the upper and lower side walls on the side away from the second concave portion.

[0016] The height of the left and right side walls of the main body of the cage unit near the second recess is lower than the height of its upper and lower side walls.

[0017] As a further improvement of this utility model, the main body of the cage unit is made of PEEK material.

[0018] This utility model also discloses a bearing cage, including the above-mentioned single-row cage unit;

[0019] Several single-row cage units are spaced apart to form an annular bearing cage;

[0020] The wrapping between two adjacent single-row cage units and the window opening of each single-row cage unit are used to place the rollers.

[0021] This utility model also discloses a bearing, including the above-mentioned bearing cage, and further including an inner ring and an outer ring;

[0022] The bearing cage is disposed between the inner ring and the outer ring, and the single-row cage unit within the bearing cage has rollers placed in its openings and enclosure.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] This invention, by setting a single-row retainer unit, is simpler in structure than the existing two-row or more-row structures, reducing complexity and solving the problem of difficult mold production.

[0025] This invention forms the first oil collection groove by recessing the four corners of the window opening. This recessed structural design changes the right-angle structure of the four inner corners of the existing window opening. When the cage is subjected to external impact, the recessed structure can more effectively disperse the impact force, avoiding the problem of the right-angle inner corners being weak points, thereby reducing the possibility of damage and cracking, improving the service life of the cage, and also having a positive impact on the stability of the entire bearing system.

[0026] This invention significantly reduces the contact area between the roller and the single-row cage unit by setting a fixing part and a second oil collection groove on the upper and lower inner walls of the window hole, thereby reducing friction between the two, reducing heat generation, and reducing wear. At the same time, the second oil collection groove, together with the first oil collection groove, allows the lubricating oil to reach the roller better, achieving more comprehensive and efficient lubrication and alleviating the problem of internal bearing wear and energy loss caused by insufficient lubrication.

[0027] This invention achieves oil storage function by setting a second concave portion, while also greatly reducing the occurrence of oil scraping problems. At the same time, the setting of the upper and lower concave portions can also distribute the lubricating oil on the front and rear sides of the cage unit body, improving the lubrication effect on the rollers.

[0028] By setting a first recessed portion, this utility model can form an enclosing portion between two adjacent cage unit bodies. In the process of enclosing the bearing cage, the number of cage unit bodies can be reduced, thereby reducing the weight of the overall bearing cage and bearing. Compared with the existing structure, only 1 / 2 of the cage unit body is needed to complete the enclosure of the bearing cage and the installation of the rollers. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a single-row cage unit disclosed in one embodiment of the present invention;

[0030] Figure 2This is a structural schematic diagram of a single-row cage unit disclosed in one embodiment of the present invention from another angle;

[0031] Figure 3 This is a front view of the structure of a single-row cage unit disclosed in one embodiment of the present invention;

[0032] Figure 4 This is a rear view of the structure of a single-row cage unit disclosed in one embodiment of the present invention;

[0033] Figure 5 This is a top view of the structure of a single-row cage unit disclosed in one embodiment of the present invention;

[0034] Figure 6 This is a bottom view of the structure of a single-row cage unit disclosed in one embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the cage unit body and rollers of a single-row cage unit disclosed in one embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram showing the assembly of multiple cage unit bodies of a single-row cage unit disclosed in one embodiment of the present invention.

[0037] In the picture:

[0038] 1. Main body of cage unit; 11. Window opening; 12. First oil collection groove; 13. Fixing part; 131. Second oil collection groove; 14. First concave part; 15. Second concave part; 16. Protrusion;

[0039] 2. Roller. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The present invention will now be described in further detail with reference to the accompanying drawings:

[0044] like Figure 1-7 As shown, a single-row cage unit according to the present invention includes a cage unit body 1, which has an overall frame structure. The cage unit body 1 has a window 11 for placing rollers 2 inside. The four corners of the window 11 are recessed to form a first oil collection groove 12. The upper and lower inner walls of the window 11 are both provided with a fixing part 13 protruding inward. The fixing part 13 is recessed to form a second oil collection groove 131. The left and right outer walls of the cage unit body 1 are provided with a first recess 14. The two first recesses 14 of two adjacent cage unit bodies 1 cooperate to form a wrapping part, which is used to wrap the rollers 2. The upper and lower outer walls of the cage unit body 1 are provided with a second recess 15 on the side near the outer ring. The second recess 15 is used for oil storage, uniform lubrication and anti-scratching.

[0045] In this embodiment, by setting a single-row cage unit, compared with the existing two-row or more-row structure, the structure is simpler and less complex, while also solving the problem of difficult mold production; by forming the first oil collection groove 12 by recessing the four corners of the window 11, this recessed structural design changes the right-angle structure of the four inner corners of the existing window 11. When the cage is subjected to external impact, the recessed structure can more effectively disperse the impact force, avoiding the problem of the right-angle inner corners being weak points, thereby reducing the possibility of damage and cracking, improving the service life of the cage, and also having a positive impact on the stability of the entire bearing system; by setting the upper and lower corners of the window 11 The inner side wall is provided with a fixing part 13 and a second oil collection groove 131, which greatly reduces the contact area between the roller 2 and the single-row cage unit, reduces the friction between the two, reduces the generation of heat, and reduces wear. At the same time, the second oil collection groove 131, together with the first oil collection groove 12, allows the lubricating oil to reach the roller better, achieving more comprehensive and efficient lubrication, and alleviating the problem of internal bearing wear and energy loss caused by insufficient lubrication. By setting the second concave part 15, the oil storage function is realized, and the oil scraping problem is greatly reduced. At the same time, the setting of the upper and lower concave parts can also distribute the lubricating oil on the front and rear sides of the cage unit body 1 evenly, improving the lubrication effect on the roller 2.

[0046] Specifically:

[0047] like Figure 1-7 As shown, in the above embodiment, preferably, the inner wall of the side wall between the upper and lower first oil collecting grooves 12 on the same side of the cage unit body 1 is formed with a protrusion 16. The two protrusions 16 abut against the roller 2. The protrusions 16 can better wrap the roller 2. In this embodiment, the curvature of the two protrusions 16 is adapted to the curvature of the outer contour of the roller 2.

[0048] In the above embodiment, preferably, the first concave portion 14 extends along the height direction of the cage unit body 1; and the concave curvature of the first concave portion 14 is adapted to the outer contour curvature of the roller 2; when multiple cage unit bodies 1 are spliced ​​together, the two first concave portions 14 that are close to each other between two adjacent cage unit bodies 1 form a wrapping portion that wraps around the roller 2.

[0049] In the above embodiment, preferably, the fixing part 13 is in contact with the roller 2 at the window hole 11, and both ends of the fixing part 13 are respectively connected to the adjacent first oil collection groove 12; a second oil collection groove 131 is formed recessed on the fixing part 13. In this embodiment, the second oil collection groove 131 is formed in the middle of the fixing part 13.

[0050] In the above embodiments, preferably, the upper and lower second concave portions 15 are both formed by an arc-shaped notch formed by cutting the upper and lower sidewalls of the main body 1 of the cage unit along a certain arc. The cutting depth or concave arc of the second concave portion 15 can be adjusted according to the specific working conditions.

[0051] In the above embodiment, preferably, the left and right sidewalls of the cage unit body 1, away from the second recess 15, are flush with its upper and lower sidewalls; the height of the left and right sidewalls of the cage unit body 1 near the second recess 15 is lower than the height of its upper and lower sidewalls. This effectively ensures the flow of lubricating oil between two adjacent cage unit bodies 1, thereby achieving effective lubrication of the rollers 2 in the window openings 11 of the two adjacent cage unit bodies 1 and the rollers 2 in the wrapping portion.

[0052] In the above embodiments, preferably, the cage unit body 1 is made of PEEK material. Furthermore, the cage unit body 1 is integrally molded; the PEEK material can effectively prevent failure of the cage unit body 1 and improve its service life.

[0053] In the above embodiments, preferably, the roller 2 is cylindrical.

[0054] like Figure 7-8 As shown, a bearing cage according to the present invention includes the above-mentioned single-row cage unit; a plurality of single-row cage units are spaced apart to form an annular bearing cage; the wrapping portion between two adjacent single-row cage units and the window 11 of each single-row cage unit are respectively used to place rollers 2.

[0055] During actual assembly, since each single-row cage unit has a first recess 14 on both the left and right side walls of the cage unit body 1, and two adjacent first recesses 14 of two adjacent cage unit bodies 1 can form a wrapping part, the rollers 2 can be effectively wrapped. That is, in this embodiment, the rollers 2 of the bearing cage are placed in two ways: one part is placed in the window 11 of each corresponding cage unit body 1, and the other part is placed in the wrapping part formed by two adjacent cage unit bodies 1.

[0056] In the above embodiments, preferably, the present invention also provides a bearing, which includes the above-mentioned bearing cage, and further includes an inner ring and an outer ring; the bearing cage is disposed between the inner ring and the outer ring, and rollers 2 are placed in the window 11 and the enclosure portion of the bearing cage.

[0057] In the above embodiment, preferably, since the height of the left and right side walls of the cage unit body 1 near the second recess 15 is lower than the height of its upper and lower side walls, when there is too much lubricating oil in the outer ring, it can flow into the window holes 11 of the two adjacent cage unit bodies 1 or the wrapping portion formed by the interval between the two cage unit bodies 1 through this design, so as to achieve effective lubrication of the rollers 2 in the window holes 11 and the wrapping portion; the upper and lower second recesses 15 located on the upper and lower side walls of the cage unit body 1 can store the lubricating oil located between the inner and outer rings of the bearing and guide it. The lubricating oil flows into the window 11 on the side of the cage unit body 1 near the outer ring, so as to achieve uniform distribution of lubricating oil. At the same time, it can also effectively avoid the problem of insufficient lubrication and dryness of the roller 2 caused by the oil scraping of the equipment between the inner and outer rings. The fixing part 13 located between the inner walls of the upper and lower side walls of the window 11 of each cage unit body 1 and the second oil collection groove 131 formed by the indentation thereon, together with the first oil collection groove 12 at the four inner corners of the window 11, can effectively store the lubricating oil flowing into the window 11, further ensuring the lubrication of the roller 2 and the lubrication time.

[0058] In the above embodiments, preferably, by setting the first concave portion, an enclosing portion can be formed between two adjacent cage unit bodies 1. During the process of enclosing the bearing cage, the number of cage unit bodies 1 can be reduced, thereby reducing the weight of the overall bearing cage and bearing. Compared with the existing structure, only 1 / 2 of the cage unit body 1 is needed to complete the enclosure of the bearing cage and the installation requirements of the roller 2.

[0059] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A single-row cage unit, characterized in that, Includes the main body of the cage unit (1); The main body (1) of the cage unit has a frame structure, and a window (11) for placing the roller (2) is formed inside it; the four corners of the window (11) are recessed to form a first oil collection groove (12); the upper and lower inner walls of the window (11) are both provided with a fixing part (13) protruding inward, and the fixing part (13) is recessed to form a second oil collection groove (131); The outer walls on the left and right sides of the main body (1) of the cage unit are provided with first recesses (14). The two first recesses (14) of two adjacent main bodies (1) of the cage unit cooperate to form a wrapping part, which is used to wrap the roller (2). The outer walls of the upper and lower sides of the main body (1) of the cage unit are provided with a second recess (15) on the side near the outer ring. The second recess (15) is used for oil storage, uniform lubrication and oil scratch prevention.

2. The single-row cage unit according to claim 1, characterized in that, The inner wall of the side wall between the upper and lower first oil collection grooves (12) on the same side of the main body (1) of the cage unit has a protrusion (16), and the protrusion (16) on both sides abuts against the roller (2).

3. The single-row cage unit according to claim 1, characterized in that, The first recess (14) extends along the height direction of the cage unit body (1); and the concave curvature of the first recess (14) is adapted to the outer contour curvature of the roller (2).

4. The single-row cage unit according to claim 1, characterized in that, The fixing part (13) contacts and engages with the roller (2) at the window hole (11), and both ends of the fixing part (13) are respectively connected to the adjacent first oil collection groove (12); the fixing part (13) has a second oil collection groove (131) formed inward.

5. The single-row cage unit according to claim 4, characterized in that, The second oil collection tank (131) is formed in the middle of the fixed part (13).

6. The single-row cage unit according to claim 1, characterized in that, The upper and lower second concave portions (15) are both formed by the upper and lower sidewalls of the main body (1) of the retainer unit along a certain arc, near the outer ring.

7. The single-row cage unit according to claim 1, characterized in that, The left and right sidewalls of the main body (1) of the retainer unit are flush with the upper and lower sidewalls of the sidewalls away from the second recess (15); The height of the left and right side walls of the main body (1) of the retainer unit, which are close to the second recess (15), is lower than the height of its upper and lower side walls.

8. The single-row cage unit according to claim 1, characterized in that, The main body (1) of the cage unit is made of PEEK material.

9. A bearing cage, characterized in that, include: The single-row cage unit as described in any one of claims 1-8; Several single-row cage units are spaced apart to form an annular bearing cage; The wrapping between two adjacent single-row cage units and the window (11) of each single-row cage unit are used to place the roller (2).

10. A bearing comprising the bearing cage as claimed in claim 9, characterized in that, It also includes the inner circle and the outer circle; The bearing cage is disposed between the inner ring and the outer ring, and the single-row cage unit inside the bearing cage has rollers (2) placed in the window (11) and the wrapping part.

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