Roller pin with lubricating oil groove structure
By setting up a spiral lubricating oil tank and oil storage chamber on the needle, combined with sponge and oil conduction channels, the automatic distribution of lubricating oil is achieved, which solves the problem of large rotational damping and wear caused by the lack of lubricating structure of the needle, and improves the service life of the bearing.
Patent Information
- Application Number
- CN202422671993.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-11-01
AI Technical Summary
The existing needle rollers do not have a lubricating structure, which leads to large rotational damping of the inner and outer rings of the bearing, which is easy to wear, and affects the service life of the bearing.
A spiral lubricating oil tank and oil storage chamber are arranged on the needle roller body, combined with sponge and oil conduction channels, and the automatic distribution of lubricating oil is achieved by using centrifugal force to lubricate the needle roller, needle roller frame, bearing inner ring and outer ring.
Reduces the rotational damping between the inner and outer rings of the bearing, avoids wear and improves the service life of the bearing.
Smart Images
Figure CN223152560U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of needle rollers, and more specifically, to a needle roller with a lubricating oil groove structure. Background Art
[0002] As an important component on a bearing, when in use, a needle roller is rotatably connected to a needle roller holder, and the needle roller is located between the inner ring and the outer ring of the bearing; currently, the needle rollers on the market are columnar objects made of metal materials. After the needle rollers are applied to the bearing, since the needle rollers themselves do not have a lubricating structure, there will be a disadvantage of large rotational damping between the inner ring and the outer ring of the bearing, that is, there will not only be a disadvantage of poor smoothness of rotation of the inner ring of the bearing relative to the outer ring of the bearing, but also it is easy to cause wear of the needle rollers, the inner ring of the bearing, and the outer ring of the bearing and affect the service life of the bearing. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a needle roller with a lubricating oil groove structure, which can realize the lubrication of the needle roller, the needle roller holder, the inner ring of the bearing, and the outer ring of the bearing, thereby effectively avoiding the wear of the needle roller, the inner ring of the bearing, and the outer ring of the bearing and improving the service life of the bearing.
[0004] The utility model provides a needle roller with a lubricating oil groove structure, including a needle roller body. There are two spiral lubricating oil grooves arranged on the outer wall of the needle roller body. Both of the two lubricating oil grooves extend along the axial direction of the needle roller body, and the spiral directions of the two lubricating oil grooves are opposite; a storage oil cavity is arranged inside the needle roller body. The storage oil cavity penetrates through the needle roller body along the axial direction of the needle roller body. Plug heads are connected to both ends of the storage oil cavity. A sponge is filled inside the storage oil cavity, and lubricating oil is adsorbed in the sponge; a plurality of oil guiding channels are arranged on both the front side and the rear side of the needle roller body at intervals along the axial direction of the needle roller body. Each oil guiding channel extends along the radial direction of the needle roller body. The inner end of each oil guiding channel is communicated with the storage oil cavity, and the outer end of each oil guiding channel is communicated with one of the lubricating oil grooves.
[0005] After the utility model adopts the above structure, when the needle roller is applied to the bearing, when the needle roller rotates with the needle roller holder and the inner ring of the bearing, the lubricating oil adsorbed in the sponge can flow into the lubricating oil groove through the oil guiding channel under the action of centrifugal force. The lubricating oil entering the lubricating oil groove can realize the lubrication of the needle roller, the needle roller holder, the inner ring of the bearing, and the outer ring of the bearing, thereby reducing the rotational damping between the inner ring and the outer ring of the bearing, that is, enabling the inner ring of the bearing to rotate more smoothly relative to the outer ring of the bearing, and effectively avoiding the wear of the needle roller, the inner ring of the bearing, and the outer ring of the bearing and improving the service life of the bearing.
[0006] In a possible implementation, the plug is made of rubber material. The inner end of the plug is inserted into the end of the oil storage cavity and is tightly sealed against the inner wall of the end of the oil storage cavity. An annular convex edge is provided on the outer peripheral wall of the outer end of the plug, and the annular convex edge abuts against the outer end face in the axial direction of the needle roller body. After adopting this structure, after the inner end of the plug is inserted into the end of the oil storage cavity, the outer peripheral wall of the inner end of the plug can be tightly sealed against the inner peripheral wall of the end of the oil storage cavity, that is, the plug can reliably seal the end of the oil storage cavity. By providing an annular convex edge on the outer peripheral wall of the outer end of the plug, when it is necessary to remove the plug from the end of the oil storage cavity, the annular convex edge can be pulled to make the plug disengage from the needle roller body, that is, it is convenient to disassemble the plug from the needle roller body. After the plug is disassembled, the user can add lubricating oil to the oil storage cavity, and the lubricating oil entering the oil storage cavity can be adsorbed in the sponge. In addition, by designing the oil storage cavity as a structure penetrating the needle roller body and installing plugs at both ends of the oil storage cavity, the user can disassemble the plug on either side to add lubricating oil to the oil storage cavity, thereby improving the flexibility of adding lubricating oil.
[0007] In a possible implementation, an annular chamfered surface is provided on the outer wall of the inner end of the plug. The annular chamfered surface is used to cooperate with the inner wall of the end of the oil storage cavity for guiding so as to facilitate the insertion of the inner end of the plug into the end of the oil storage cavity. By providing an annular chamfered surface on the outer wall of the inner end of the plug, when assembling the inner end of the plug with the end of the oil storage cavity, the annular chamfered surface can cooperate with the inner wall of the end of the oil storage cavity for guiding so as to facilitate the insertion of the inner end of the plug into the end of the oil storage cavity, that is, it is convenient to assemble the plug with the needle roller body.
[0008] In a possible implementation, annular rounded surfaces are formed on the outer peripheral walls at both ends in the axial direction of the needle roller body. By providing the outer peripheral walls at both ends in the axial direction of the needle roller body as annular rounded surfaces, after the needle roller body is installed on the needle roller cage in the bearing, the friction between the two ends of the needle roller body and the needle roller cage can be effectively reduced, that is, the rotational damping between the needle roller body and the needle roller cage can be reduced, and it can also make the rotation of the needle roller body and the needle roller cage smoother. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 is a schematic cross-sectional structure view of the present utility model;
[0010] Figure 2 is Figure 1 an enlarged structural view of part A in
[0011] Figure 3 a schematic three-dimensional structure view of the needle roller body. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0012] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the embodiments of this application, and are not intended to limit the protection scope of the embodiments of this application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.
[0013] In the description of the embodiments of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific situations.
[0014] In the embodiments of this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or just means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or just means that the first feature has a lower horizontal height than the second feature.
[0015] The following further elaborates on this application in detail with reference to the drawings and specific embodiments.
[0016] See Figures 1-3 As shown, the embodiments of this application disclose a needle roller with a lubricating oil groove structure, including a needle roller body 1. There are two spiral lubricating oil grooves 11 provided on the outer wall of the needle roller body 1. Both of the two lubricating oil grooves 11 extend along the axial direction of the needle roller body 1, and the spiral directions of the two lubricating oil grooves 11 are opposite; an oil storage cavity 12 is provided inside the needle roller body 1. The oil storage cavity 12 penetrates through the needle roller body 1 along the axial direction of the needle roller body 1. Plug heads 2 are connected to both ends of the oil storage cavity 12. A sponge 3 is filled inside the oil storage cavity 12, and lubricating oil is adsorbed in the sponge 3; a plurality of oil guiding channels 13 are provided on both the front side and the rear side of the needle roller body 1 and are spaced apart along the axial direction of the needle roller body 1. Each oil guiding channel 13 extends along the radial direction of the needle roller body 1. The inner end of each oil guiding channel 13 is communicated with the oil storage cavity 12, and the outer end of each oil guiding channel 13 is communicated with one of the lubricating oil grooves 11.
[0017] When the utility model is applied to a bearing, when the needle roller rotates with the needle roller rack and the inner ring of the bearing, the lubricating oil absorbed in the sponge can flow into the lubricating oil groove through the oil guide channel under the action of centrifugal force, and the lubricating oil entering the lubricating oil groove can lubricate the needle roller, the needle roller rack, the inner ring of the bearing and the outer ring of the bearing, thereby reducing the rotational damping between the inner ring and the outer ring of the bearing, that is, the inner ring of the bearing can rotate more smoothly relative to the outer ring of the bearing, and can effectively avoid wear of the needle roller, the inner ring of the bearing and the outer ring of the bearing and increase the service life of the bearing.
[0018] The plug 2 is made of rubber material, the inner end of the plug 2 is inserted into the end of the oil storage cavity 12 and is tightly sealed with the inner wall of the end of the oil storage cavity 12, and an annular convex edge 21 is provided on the outer peripheral wall of the outer end of the plug 2, and the annular convex edge 21 abuts against the outer end face of the needle roller body 1 in the axial direction; by adopting this structure, after the inner end of the plug is inserted into the end of the oil storage cavity, the outer peripheral wall of the inner end of the plug can be tightly sealed with the inner peripheral wall of the end of the oil storage cavity, that is, the plug can reliably seal the end of the oil storage cavity; by providing an annular convex edge 21 on the outer peripheral wall of the outer end of the plug After the annular convex edge is attached, when the plug needs to be removed from the end of the oil storage chamber, the annular convex edge can be pulled to separate the plug from the needle roller body, which makes it convenient to separate the plug from the needle roller body. When the plug is removed, the user can add lubricating oil to the oil storage chamber, and the lubricating oil entering the oil storage chamber can be absorbed in the sponge; in addition, by designing the oil storage chamber to be a structure that runs through the needle roller body and installing plugs at both ends of the oil storage chamber, the user can remove the plug on either side to add lubricating oil to the oil storage chamber, thereby improving the flexibility of adding lubricating oil.
[0019] An annular chamfered surface 22 is provided on the outer wall of the inner end of the plug 2, and the annular chamfered surface 22 is used to cooperate and guide with the inner wall of the end of the oil storage chamber 12 so as to facilitate the insertion of the inner end of the plug 2 into the end of the oil storage chamber 12; after the annular chamfered surface is provided on the outer wall of the inner end of the plug, when the inner end of the plug and the end of the oil storage chamber are assembled, the annular chamfered surface can cooperate and guide with the inner wall of the end of the oil storage chamber so as to facilitate the insertion of the inner end of the plug into the end of the oil storage chamber, which can facilitate the assembly of the plug and the needle roller body.
[0020] The outer peripheral walls at both ends of the needle roller body 1 in the axial direction form annular rounded surfaces 14; by setting the outer peripheral walls at both ends of the needle roller body in the axial direction to annular rounded surfaces, after the needle roller body is installed on the needle roller frame in the bearing, the friction between the two ends of the needle roller body and the needle roller frame can be effectively reduced, that is, the rotation damping of the needle roller body and the needle roller frame can be reduced, that is, the rotation of the needle roller body and the needle roller frame can be made smoother.
[0021] As described above, it is only the specific implementation manner of this application. However, the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.
Claims
1. A needle roller with a lubricating oil groove structure, comprising a needle roller body (1), wherein two spiral lubricating oil grooves (11) are arranged on the outer wall of the needle roller body (1), and both of the two lubricating oil grooves (11) extend along the axial direction of the needle roller body (1), and the spiral directions of the two lubricating oil grooves (11) are opposite; characterized in that: An oil storage cavity (12) is arranged inside the needle roller body (1). The oil storage cavity (12) penetrates through the needle roller body (1) along the axial direction of the needle roller body (1). Plug heads (2) are connected to both ends of the oil storage cavity (12). A sponge (3) is filled inside the oil storage cavity (12), and lubricating oil is adsorbed in the sponge (3). A plurality of oil guiding channels (13) spaced along the axial direction of the needle roller body (1) are arranged on both the front side and the rear side of the needle roller body (1). Each oil guiding channel (13) extends along the radial direction of the needle roller body (1). The inner end of each oil guiding channel (13) communicates with the oil storage cavity (12), and the outer end of each oil guiding channel (13) communicates with one of the lubricating oil grooves (11).
2. The needle roller with a lubricating oil groove structure according to claim 1, wherein: The plug head (2) is made of rubber material. The inner end of the plug head (2) is inserted into the end of the oil storage cavity (12) and is in close contact and sealed with the inner wall of the end of the oil storage cavity (12). An annular convex edge (21) is arranged on the outer peripheral wall of the outer end of the plug head (2), and the annular convex edge (21) abuts against the outer end face in the axial direction of the needle roller body (1).
3. The needle roller with a lubricating oil groove structure according to claim 2, characterized in that: An annular chamfered surface (22) is arranged on the outer wall of the inner end of the plug head (2). The annular chamfered surface (22) is used to cooperate with the inner wall of the end of the oil storage cavity (12) for guiding so as to facilitate the insertion of the inner end of the plug head (2) into the end of the oil storage cavity (12).
4. The needle roller with a lubricating oil groove structure according to any one of claims 1-3, characterized in that: Annular rounded surfaces (14) are formed on the outer peripheral walls at both ends in the axial direction of the needle roller body (1).