Low-friction roller pin

Abstract

The utility model provides a low-friction roller pin which comprises a roller pin body formed by solidifying ceramic powder, a plurality of open slots are uniformly distributed on the outer wall of the roller pin body in the circumferential direction, and each open slot penetrates through the roller pin body along the axial direction of the roller pin body; an oil absorption sponge strip is embedded in each open groove, lubricating oil is absorbed in each oil absorption sponge strip, and the two ends of each oil absorption sponge strip extend to the two end portions of the roller pin body in the axial direction respectively; according to the utility model, the rotating friction force between the bearing inner ring and the bearing outer ring can be reduced, and the abrasion of the roller pins and the abrasion of the bearing inner ring and the bearing outer ring can be effectively avoided, so that the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of needle rollers, and particularly to a needle roller with low friction. Background Art

[0002] As an important component on a bearing, a needle roller is rotatably connected to a needle roller holder during use, 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 it is difficult to make the outer peripheral surface of the needle rollers made of metal materials flat, and the needle rollers themselves do not have a lubricating structure, there will be a disadvantage of large rotational friction between the inner ring and the outer ring of the bearing, that is, there will not only be a disadvantage of poor rotational smoothness 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 low friction, which can reduce the rotational friction between the inner ring and the outer ring of the bearing, and can effectively avoid the wear of the needle roller itself and the inner ring and the outer ring of the bearing, so as to improve the service life of the bearing.

[0004] The utility model provides a needle roller with low friction, which includes a needle roller body formed by consolidating ceramic powder. A plurality of opening grooves are circumferentially and evenly distributed on the outer wall of the needle roller body, and each opening groove penetrates through the needle roller body along the axial direction of the needle roller body; an oil-absorbing sponge strip is embedded in each opening groove, lubricating oil is adsorbed in each oil-absorbing sponge strip, and both ends of each oil-absorbing sponge strip respectively extend to two end parts in the axial direction of the needle roller body.

[0005] After the utility model adopts the above structure, since the ceramic powder is flexible before consolidation, it is easier to make the outer peripheral surface of the needle roller body flat. Therefore, when the needle roller is applied to the bearing, the rotational friction between the inner ring and the outer ring of the bearing can be reduced. After the oil-absorbing sponge strips are embedded on the outer peripheral wall of the needle roller body, when the needle roller rotates, the lubricating oil adsorbed in the oil-absorbing sponge strips can be thrown out under the action of centrifugal force, so as to realize the lubrication of the needle roller, the inner ring of the bearing, and the outer ring of the bearing, that is, the wear of the needle roller itself and the inner ring and the outer ring of the bearing can be effectively avoided, so as to improve the service life of the bearing.

[0006] In a possible implementation, the outer side of each oil-absorbing sponge strip extends to the opening of the opening groove, and the outer side surface of each oil-absorbing sponge strip forms an arc surface and is on the same circular surface as the outer peripheral surface of the needle roller body; after adopting this structure, since the outer side of each oil-absorbing sponge strip extends to the opening of the opening groove, and since the outer side surface of each oil-absorbing sponge strip forms an arc surface and is on the same circular surface as the outer peripheral surface of the needle roller body, when the needle roller body is installed on the needle roller holder and rotates with the inner ring of the bearing, the outer side of the oil-absorbing sponge strip can more reliably abut against the outer peripheral wall of the inner ring of the bearing and the inner peripheral wall of the outer ring of the bearing, that is, the lubricating oil adsorbed inside the oil-absorbing sponge strip can be more reliably coated on the outer peripheral wall of the inner ring of the bearing and the inner peripheral wall of the outer ring of the bearing, so that the lubrication of the inner ring and the outer ring of the bearing can be reliably achieved, so as to reduce the frictional force between the needle roller body and the inner ring and the outer ring of the bearing, and further effectively avoid the wear of the needle roller, the inner ring of the bearing and the outer ring of the bearing, so as to improve the service life of the bearing.

[0007] In a possible implementation, an expansion part is formed at the inner end of each opening groove along the radial direction of the needle roller body, the shape of the oil-absorbing sponge strip is adapted to the shape of the opening groove, and the oil-absorbing sponge strip is in a tight fit with the opening groove; after adopting this structure, the oil-absorbing sponge strip can be reliably embedded in the opening groove, and the oil-absorbing sponge strip can be effectively prevented from disengaging from the opening groove along the radial direction of the needle roller body, that is, the fixing firmness of the oil-absorbing sponge strip and the needle roller body can be improved.

[0008] In a possible implementation, a support column made of a metal material is embedded in the needle roller body, the support column is of a cylindrical structure, the support column is coaxially arranged with the needle roller body, and both ends of the support column extend to the two ends of the needle roller body in the axial direction; after embedding a support column made of a metal material in the needle roller body, and since the support column is coaxially arranged with the needle roller body and both ends of the support column extend to the two ends of the needle roller body in the axial direction, the rigidity of the needle roller body can be improved to improve the structural strength of the needle roller body; in addition, since the support column is of a cylindrical structure and the support column is coaxially arranged with the needle roller body, the dynamic balance of the needle roller can be ensured when the needle roller rotates; in addition, the ceramic powder for forming the needle roller body is wrapped outside the circumferential direction of the support column, and after the ceramic powder is sintered, the needle roller body is formed, and the needle roller body formed by consolidating the ceramic powder is embedded and fixed with the support column. Description of the Drawings

[0009] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0010] Figure 2 is a cross-sectional structural schematic diagram of the present utility model. Detailed Embodiments

[0011] 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 the present application and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0012] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" 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 the present application can be understood according to specific situations.

[0013] In the embodiments of the present 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 in indirect 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 merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0014] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] See Figure 1-2 As shown, the embodiments of the present application disclose a low-friction needle roller, which includes a needle roller body 1 formed by consolidating ceramic powder. A plurality of opening grooves 11 are circumferentially and evenly distributed on the outer wall of the needle roller body 1, and each opening groove 11 penetrates the needle roller body 1 along the axial direction of the needle roller body 1; an oil-absorbing sponge strip 2 is embedded in each opening groove 11, and each oil-absorbing sponge strip 2 adsorbs lubricating oil, and both ends of each oil-absorbing sponge strip 2 respectively extend to the two end parts in the axial direction of the needle roller body 1; after the utility model is applied to a bearing, the user can regularly use an oil gun to inject lubricating oil into the oil-absorbing sponge strip.

[0016] The outer side of each oil-absorbing sponge strip 2 extends to the opening of the opening groove 11, and the outer side surface of each oil-absorbing sponge strip 2 forms an arc surface and is on the same circular surface as the outer peripheral surface of the needle roller body 1; after adopting this structure, since the outer side of each oil-absorbing sponge strip extends to the opening of the opening groove, and since the outer side surface of each oil-absorbing sponge strip forms an arc surface and is on the same circular surface as the outer peripheral surface of the needle roller body, when the needle roller body is installed on the needle roller holder and rotates with the inner ring of the bearing, the outer side of the oil-absorbing sponge strip can more reliably abut against the outer peripheral wall of the inner ring of the bearing and the inner peripheral wall of the outer ring of the bearing, that is, the lubricating oil adsorbed inside the oil-absorbing sponge strip can be more reliably coated on the outer peripheral wall of the inner ring of the bearing and the inner peripheral wall of the outer ring of the bearing, so as to reliably lubricate the inner ring and the outer ring of the bearing, thereby reducing the friction between the needle roller body and the inner ring and the outer ring of the bearing, and further effectively avoiding the wear of the needle roller, the inner ring of the bearing and the outer ring of the bearing, so as to improve the service life of the bearing.

[0017] An expansion part 12 is formed at the inner end of each opening groove 11 along the radial direction of the needle roller body 1. The shape of the oil-absorbing sponge strip 2 is adapted to the shape of the opening groove 11, and the oil-absorbing sponge strip 2 is in a tight fit with the opening groove 11; after adopting this structure, the oil-absorbing sponge strip can be reliably embedded in the opening groove, and the oil-absorbing sponge strip can be effectively prevented from separating from the opening groove along the radial direction of the needle roller body, that is, the fixing firmness of the oil-absorbing sponge strip and the needle roller body can be improved.

[0018] A support column body 3 made of a metal material is embedded in the needle roller body 1. The support column body 3 is of a cylindrical structure, the support column body 3 is coaxially arranged with the needle roller body 1, and both ends of the support column body 3 extend to the two ends of the needle roller body 1 in the axial direction; after embedding a support column made of a metal material in the needle roller body, and since the support column body is coaxially arranged with the needle roller body and both ends of the support column body extend to the two ends of the needle roller body in the axial direction, the rigidity of the needle roller body can be improved to improve the structural strength of the needle roller body; in addition, since the support column body is of a cylindrical structure and the support column body is coaxially arranged with the needle roller body, the dynamic balance of the needle roller can be ensured when the needle roller rotates; in addition, the ceramic powder used for forming the needle roller body is wrapped outside the circumferential direction of the support column body, and the needle roller body is formed after the ceramic powder is sintered, and the needle roller body formed by consolidating the ceramic powder is embedded and fixed with the support column body.

[0019] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A needle roller with low friction, characterized in that: It includes a needle roller body (1) formed by consolidating ceramic powder. A number of opening grooves (11) are circumferentially and evenly distributed on the outer wall of the needle roller body (1), and each of the opening grooves (11) penetrates the needle roller body (1) along the axial direction of the needle roller body (1); an oil-absorbing sponge strip (2) is embedded in each of the opening grooves (11), lubricating oil is adsorbed in each of the oil-absorbing sponge strips (2), and both ends of each of the oil-absorbing sponge strips (2) respectively extend to the two end portions in the axial direction of the needle roller body (1).

2. The needle roller with low frictional property according to claim 1, characterized in that: The outer side edge of each of the oil-absorbing sponge strips (2) extends to the opening of the opening groove (11), and the outer side surface of each of the oil-absorbing sponge strips (2) forms an arc surface and is on the same circular surface as the outer peripheral surface of the needle roller body (1).

3. The needle roller with low frictional property according to claim 2, characterized in that: An expansion portion (12) is formed at the inner end portion of each of the opening grooves (11) along the radial direction of the needle roller body (1). The shape of the oil-absorbing sponge strip (2) is adapted to the shape of the opening groove (11), and the oil-absorbing sponge strip (2) is in tight fit with the opening groove (11).

4. The needle roller with low friction according to any one of claims 1-3, characterized in that: A support column body (3) made of a metal material is embedded in the needle roller body (1). The support column body (3) is of a cylindrical structure, the support column body (3) is coaxially arranged with the needle roller body (1), and both ends of the support column body (3) respectively extend to the two end portions in the axial direction of the needle roller body (1).

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