High-speed cylindrical roller bearing retainer

Abstract

The utility model discloses a high-speed cylindrical roller bearing retainer, which relates to the field of bearing retainers, and comprises a retainer frame, a plurality of clamping side beams are arranged on the retainer frame at intervals along the circumferential direction, a roller clamping station is formed between two clamping side beams, and each clamping side beam comprises an outer locking claw fixing section, an inner locking claw fixing section and an inner locking claw fixing section, the outer locking claw fixing sections are located on the section away from the axis of the retainer frame, and the axial diameter between the adjacent outer locking claw fixing sections is larger than the diameter of the roller body. The inner locking claw fixing sections are located on the sections close to the axis of the retainer frame, the axial diameter between every two adjacent inner locking claw fixing sections is smaller than the diameter of the roller body, oil guide grooves are formed in the positions, on the inner locking claw fixing sections, of the clamping side beams, the oil guide grooves are arranged in an arc shape, and arc openings of the oil guide grooves face the axis of the retainer frame. The problems that in the prior art, due to the fact that a gap between a locking opening and a roller is too small, flowing of a lubricating agent can be hindered, normal rotation of a bearing is affected, and more seriously, the bearing can be stuck possibly are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bearing retainer, concretely relates to a high -speed cylindrical roller bearing retainer. BACKGROUND

[0002] The existing plastic cylindrical roller bearing plastic retainer design adopts the outer ring guide design, requires that the guide gap between the guide outer diameter of the retainer and the guide inner diameter of the outer ring is very small, and the ball pocket part of the retainer is mostly designed with double locking claws of inner and outer rings, and the middle part is designed with spherical surface or inclined surface, that is, the roller movement is limited in the retainer. When the bearing speed is too high, due to the centrifugal force, the outer ring locking claw will bear a large centrifugal force, and the inner and outer double locking structure, the gap between the locking port and the roller is too small, which will hinder the flow of lubricant, and further affect the normal rotation of the bearing, and more seriously, it may cause the bearing to be stuck. SUMMARY

[0003] The application provides a high-speed cylindrical roller bearing retainer, which can solve the technical problem that the gap between the locking port and the roller is too small in the prior art, which hinders the flow of lubricant, and further affects the normal rotation of the bearing, and more seriously, it may cause the bearing to be stuck.

[0004] The application provides a high-speed cylindrical roller bearing retainer, which can solve the technical problem that the gap between the locking port and the roller is too small in the prior art, which hinders the flow of lubricant, and further affects the normal rotation of the bearing, and more seriously, it may cause the bearing to be stuck.

[0005] The retainer frame is provided with a plurality of clamping side beams which are spaced apart in the circumferential direction, and a roller clamping station is formed between two clamping side beams.

[0006] The outer locking claw fixing section is a section away from the axis of the retainer frame, and the axial diameter between adjacent outer locking claw fixing sections is greater than the body diameter of the roller.

[0007] The inner locking claw fixing section is a section close to the axis of the retainer frame, and the axial diameter between adjacent inner locking claw fixing sections is less than the body diameter of the roller. An oil guide groove is formed in the inner locking claw fixing section of the clamping side beam, the oil guide groove is arranged in a circular arc shape, and the circular arc opening of the oil guide groove faces the axis of the retainer frame.

[0008] In an embodiment, the clamping side beam further comprises:

[0009] An oil storage groove is arranged on the clamping side beam, and the oil storage groove is in communication with the oil guide groove.

[0010] In an embodiment, the oil storage groove is formed on the clamping side beam along the length direction of the clamping side beam, and the oil storage groove is arranged between the outer locking claw fixing section and the inner locking claw fixing section.

[0011] In one embodiment, the clamping side beam surface is arranged as a circular arc surface protruding towards the roller body.

[0012] In one embodiment, a lightening groove is arranged on the clamping side beam in the length direction of the clamping side beam.

[0013] In one embodiment, an outer ring stopper is arranged on the end surface of the retainer frame near one end of the outer locking claw fixed section.

[0014] In one embodiment, an end surface groove is arranged on the end surface of the retainer frame.

[0015] In one embodiment, the axial diameter between adjacent outer locking claw fixed sections is greater than the roller body diameter by 0.2-0.3 mm.

[0016] In one embodiment, the axial diameter between adjacent inner locking claw fixed sections is less than the roller body diameter by 0.3-0.4 mm.

[0017] In one embodiment, the retainer frame is made of plastic.

[0018] The technical scheme provided by the embodiments of the present application has the following beneficial effects:

[0019] By arranging the oil guide groove on the inner locking claw fixed end of the clamping side beam, after the roller body is installed to the roller clamping station, the axial diameter between adjacent outer locking claw fixed sections of the clamping side beam is greater than the roller body diameter, so as to reduce the contact area of the roller body between the outer locking claw fixed sections of the clamping side beam and reduce the heating; the axial diameter between adjacent inner locking claw fixed sections of the clamping side beam is less than the roller body diameter, so as to reduce the possibility of radial slip of the roller body in the roller clamping station, and by arranging the oil guide groove on the inner locking claw fixed section which is more closely clamped with the roller body, the lubricant is supplemented in time towards the roller body during the rotation of the bearing, so that the rotation of the bearing is more convenient, and the possibility of roller jamming is reduced; and the oil guide groove is arranged in a circular arc shape, the arc opening of the oil guide groove faces the axis of the retainer frame, the groove area on the side of the inner locking claw fixed section facing the outer locking claw fixed section is small, and the inner locking claw fixed section can still play a role in clamping the roller body, solving the problem that the gap between the locking opening and the roller in the prior art is too small, which hinders the flow of lubricant, thereby affecting the normal rotation of the bearing, and more seriously, may cause the bearing to be jammed. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the technical solutions in the embodiments of the present application clearer, the accompanying drawings needed in the embodiment description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0021] Figure 1 Fig. 1 is a structural schematic diagram of a high-speed cylindrical roller bearing retainer in the present application;

[0022] Figure 2 Fig. 2 is a partial sectional view of the high-speed cylindrical roller bearing retainer in the present application when the roller body is mounted thereon;

[0023] In the figure: 1, retainer frame; 2, clamping side beam; 21, outer locking jaw fixed section; 22, inner locking jaw fixed section; 221, oil guide groove; 23, oil storage groove; 24, light-weight groove; 3, outer ring rib; 4, end face groove; 5, roller body. DETAILED DESCRIPTION

[0024] In order to make the technical solutions in the embodiments of the present application clearer, the accompanying drawings needed in the embodiment description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0025] The embodiments of the present application provide a high-speed cylindrical roller bearing retainer, which can solve the problem that the gap between the locking opening and the roller is too small in the prior art, which hinders the flow of lubricant, and further affects the normal rotation of the bearing, and more seriously, may cause the bearing to be stuck.

[0026] REFERENCE Figure 1 and Figure 2The high-speed cylindrical roller bearing retainer disclosed in the application comprises a retainer frame 1, a plurality of clamping side beams 2 are arranged on the retainer frame 1 in a circumferential direction, a roller clamping station is formed between the two clamping side beams 2, the clamping side beam 2 comprises an outer locking jaw fixed section 21 and an inner locking jaw fixed section 22, the outer locking jaw fixed section 21 is specifically a section of the clamping side beam 2 away from the axis of the retainer frame 1, the axial diameter between adjacent outer locking jaw fixed sections 21 is greater than the diameter of the roller body 5, so as to facilitate the rotation of the roller body 5 in the roller clamping station; the inner locking jaw fixed section 22 is specifically a section of the clamping side beam 2 close to the axis of the retainer frame 1, the axial diameter between adjacent inner locking jaw fixed sections 22 is less than the diameter of the roller body 5, thereby clamping the roller body 5 in the roller clamping station and reducing the possibility of the roller body 5 slipping along the retainer frame 1 in the radial direction in the roller clamping station.

[0027] The clamping side beam 2 is provided with an oil guide groove 221 on the inner locking jaw fixed section 22, and the oil guide groove 221 is arranged in a circular arc shape, and the circular arc opening of the oil guide groove 221 faces the axis of the retainer frame 1, so that when the roller body 5 rotates in the roller clamping station with the retainer frame 1, the lubricating oil can be stored in the oil guide groove 221, thereby lubricating the surface of the roller body 5 when the retainer frame 1 rotates. Due to the circular arc shape of the oil guide groove 221 and the arc opening of the oil guide groove 221 facing the axis of the retainer frame 1, the slotted area on the side of the inner locking jaw fixed section 22 facing the outer locking jaw fixed section 21 is small, and the end of the inner locking jaw fixed section 22 away from the retainer frame 1 can still clamp the roller body 5, solving the problem that the gap between the locking opening and the roller in the prior art is too small, which hinders the flow of lubricant, thereby affecting the normal rotation of the bearing, and more seriously, it may cause the bearing to be stuck.

[0028] More specifically, in an embodiment of the application, the axial diameter between adjacent outer locking jaw fixed sections 21 is greater than the diameter of the roller body 5 by 0.2-0.3mm, this slight size difference not only provides a certain activity allowance for the roller body 5, avoiding assembly difficulties or increased friction during operation due to the roller clamping station being too tight, but also ensures that the roller body 5 can still remain in the predetermined position when subjected to axial or radial force, preventing it from accidentally falling out, thereby improving the overall stability and durability of the bearing. The axial diameter between adjacent inner locking jaw fixed sections 22 is less than the diameter of the roller body 5 by 0.3-0.4mm, through the moderate tightening of the space limitation, the restraining effect on the roller body 5 is further enhanced, especially in the case of high-speed rotation, it can effectively reduce the possibility of unnecessary displacement or shaking of the roller body 5 inside the bearing, ensuring the stability and accuracy of the bearing during operation.

[0029] It is worth noting that the specific numerical ranges mentioned above (0.2-0.3 mm and 0.3-0.4 mm) are not absolute values, but rather reference intervals based on typical roller body 5 diameters and general bearing machining requirements. In actual applications, these dimensions can be flexibly adjusted and optimized according to specific roller body 5 diameters, bearing operating environments (such as temperature, pressure, speed, etc.), material properties, and expected service life requirements. For example, in applications requiring higher precision and lower friction, these size differences may be reduced to further enhance the performance of the retainer frame 1 in clamping the roller body 5; in situations where assembly convenience or cost is a particular concern, these size restrictions may be appropriately relaxed to ensure production efficiency and economic benefits.

[0030] The clamping side beam 2 also has an oil storage groove 23. The oil storage groove 23 can store lubricating oil during bearing rotation and lubricate the surface of the roller body 5. The oil storage groove 23 is in communication with the oil guide groove 221, so the oil guide groove 221 can guide the lubricating oil stored in the oil storage groove 23 along the radial direction of the retainer frame 1 to the center of the retainer frame 1, so that the lubricating oil of the inner locking jaw fixed section 22 remains sufficient, reducing the possibility of jamming during subsequent bearing rotation.

[0031] In an embodiment of the present application, the oil storage groove 23 is provided on the clamping side beam 2 along the length direction of the clamping side beam 2, and the oil storage groove 23 is arranged between the outer locking jaw fixed section 21 and the inner locking jaw fixed section 22. The main clamping position of the roller body 5 is located at the junction of the outer locking jaw fixed section 21 and the inner locking jaw fixed section 22. The oil storage groove 23 can reduce the area of the clamping side beam 2 in contact with the roller body 5 in the length direction, reducing heat generation during bearing rotation. The oil storage groove 23 can store lubricating oil. When the lubricating oil is affected by centrifugal force during bearing rotation, it can flow towards the roller body 5, increasing the length of the oil storage groove 23, further increasing the storage capacity of the lubricating oil, and allowing it to flow more evenly to the roller body 5.

[0032] Further, the surface of the clamping side beam 2 is specifically provided as a circular arc surface protruding towards the roller body 5, so that whether it is the outer locking jaw fixed section 21 or the inner locking jaw fixed section 22, when it contacts the roller body 5, it can change from surface contact to line contact, reducing the contact area and reducing heat generation while facilitating the passage of lubricating oil.

[0033] In order to reduce the weight of the retainer frame 1 and achieve lightweight of the retainer frame 1, the clamping side beam 2 is provided with a lightweight slot hole 24 in the middle of the clamping side beam 2. In an embodiment of the present application, the lightweight slot hole 24 is also provided along the length direction of the clamping side beam 2, so as to reduce the manufacturing cost of the retainer frame 1, reduce the weight of the retainer frame 1, and achieve lightweight design of the retainer frame 1. The end surface of the retainer frame 1 is also provided with an end surface slot 4, so as to further reduce the weight of the retainer frame 1.

[0034] With reference to Figure 1 The retainer frame 1 is provided with an outer ring stop 3 on the end surface of the retainer frame 1 near one end of the outer locking claw fixed section 21. After the bearing outer ring is installed on the retainer frame 1, the outer ring stop 3 can block the bearing outer ring, reduce the possibility of the bearing outer ring coming off during high-speed rotation, increase the safety of the whole bearing in use, and make it more convenient to use.

[0035] In actual preparation process, the retainer frame 1 can be made of plastic. Plastic has a relatively light mass density, which can significantly reduce the weight of the whole bearing assembly. It is particularly important for application scenarios that need to reduce the weight of equipment to improve operating efficiency or reduce energy consumption. At the same time, the light weight of plastic is convenient for processing and transportation, which reduces the production cost. Secondly, plastic has good forming processing performance. Through injection molding, extrusion and other forming processes, the shape, size and precision of the retainer frame 1 can be accurately controlled to meet the high precision and high stability requirements of the bearing on the retainer frame 1. In addition, the plasticity and customizability of plastic also provide greater freedom for design, which can adjust the material formula and forming process according to the actual demand to obtain the best mechanical performance and wear resistance. Of course, when choosing plastic as the material of the retainer frame 1, its potential limitations also need to be considered, such as larger thermal expansion coefficient and relatively lower mechanical strength. Therefore, in actual application, the specific working conditions, load requirements and environmental factors need to be considered comprehensively to select the appropriate type and grade of plastic to ensure that the performance of the retainer frame 1 meets the design requirements.

[0036] In the description of the present application, it should be noted that the terms "upper", "lower", and the like are used for indicating the orientation or positional relationship shown in the drawings, and are only for the convenience of describing 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, and therefore cannot be understood as limiting the present application. Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] It should be noted that in the present application, relational terms such as "first" and "second", and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or other elements inherent in such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article or apparatus including the element.

[0038] The above is only a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A high speed cylindrical roller bearing retainer characterized by, It includes: The retainer frame (1) is provided with a plurality of clamping side beams (2) in a circumferential interval, and a roller clamping station is formed between two clamping side beams (2). The clamping side beam (2) includes: The outer locking claw fixed segment (21) is located away from the shaft center of the retainer frame (1), and the axial diameter between adjacent outer locking claw fixed segments (21) is greater than the diameter of the roller body (5); And, the inner locking claw fixed segment (22) is located close to the shaft center of the retainer frame (1), and the axial diameter between adjacent inner locking claw fixed segments (22) is less than the diameter of the roller body (5). The clamping side beam (2) is provided with an oil guide groove (221) on the inner locking claw fixed segment (22), the oil guide groove (221) is arranged in a circular arc shape, and the circular arc opening of the oil guide groove (221) faces the shaft center of the retainer frame (1).

2. A high speed cylindrical roller bearing retainer according to claim 1, wherein, The clamping side beam (2) further includes: The oil storage groove (23) is arranged on the clamping side beam (2), and the oil storage groove (23) communicates with the oil guide groove (221).

3. The high-speed cylindrical roller bearing retainer of claim 2, wherein: The oil storage groove (23) is arranged on the clamping side beam (2) along the length direction of the clamping side beam (2), and the oil storage groove (23) is arranged between the outer locking claw fixed segment (21) and the inner locking claw fixed segment (22).

4. The high-speed cylindrical roller bearing retainer of claim 1, wherein: The surface of the clamping side beam (2) is arranged as a circular arc surface protruding towards the roller body (5).

5. The high-speed cylindrical roller bearing retainer of claim 1, wherein: A light weight groove (24) is arranged on the clamping side beam (2) along the length direction of the clamping side beam (2).

6. The high-speed cylindrical roller bearing retainer of claim 1, wherein: An outer ring stop edge (3) is arranged on the end face of the retainer frame (1) close to one end of the outer locking claw fixed segment (21).

7. The high-speed cylindrical roller bearing retainer of claim 1, wherein: An end face groove (4) is arranged on the end face of the retainer frame (1).

8. The high-speed cylindrical roller bearing retainer of claim 1, wherein: The axial diameter between adjacent outer locking claw fixed segments (21) is greater than the diameter of the roller body (5) by 0.2-0.3mm.

9. The high-speed cylindrical roller bearing retainer of claim 1, wherein: The axial diameter between adjacent inner locking claw fixed segments (22) is less than the diameter of the roller body (5) by 0.3-0.4mm.

10. The high-speed cylindrical roller bearing retainer of claim 1, wherein: The retainer frame (1) is made of plastic.

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