Needle bearing and retainer thereof

Abstract

The utility model belongs to the field of bearing parts, and particularly relates to a needle bearing and a retainer thereof. A plurality of roller pin holes are formed in the retainer in the circumferential direction, fixing pieces are arranged at the two ends of each roller pin hole, and roller pins are correspondingly arranged in the roller pin holes. A first positioning hole is formed in the fixing piece, and second positioning holes are formed in the two end faces of the roller pin; wherein a rolling ball is arranged between the first positioning hole and the second positioning hole, a plurality of soft scraping plates are arranged on the edge of the first positioning hole, and the soft scraping plates are tangent to the rolling ball. The rolling needle in the needle bearing rotates to drive the rolling ball to rotate, the soft scraping plate is arranged on the edge of the positioning hole in the fixing piece, and when the rolling ball rotates, the soft scraping plate is suitable for scraping particles on the rolling ball, so that abrasion of the rolling ball and the rolling needle is reduced, and the needle bearing is more durable.

Description

Technical Field

[0001] The utility model belongs to the field of bearing parts, and in particular relates to a needle roller bearing and a retaining frame thereof. Background Art

[0002] Needle roller bearings are widely used in various types of mechanical devices due to their compact structure and strong load-bearing capacity. In some technologies, the needle rollers of the needle roller bearings rotate within the needle roller holes of the cage via shafts at both ends. A gap exists between the shafts and the shaft holes in the cage, which can easily accumulate particles. Inadequate lubrication can cause shaft wear, thus shortening the service life of the needle roller bearings.

[0003] Therefore, in order to solve the technical problem that the rotating shafts at both ends of the needle roller of the needle roller bearing are easily worn by particulate matter under insufficient lubrication conditions, it is urgent to design a needle roller bearing and its retainer.

[0004] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Utility Model Content

[0005] The embodiments of the present disclosure provide at least one needle roller bearing and a retainer thereof.

[0006] In a first aspect, an embodiment of the present disclosure provides a needle roller bearing, comprising: a cage;

[0007] The retainer is provided with a plurality of needle roller holes in the circumference, and fixing members are provided at both ends of the needle roller holes, and needle rollers are correspondingly provided in the needle roller holes; a first positioning hole is provided in the fixing member, and second positioning holes are provided on both end faces of the needle rollers;

[0008] A rolling ball is provided between the first positioning hole and the second positioning hole, and a plurality of soft scrapers are provided on the edge of the first positioning hole, and the soft scrapers are tangent to the rolling ball.

[0009] In an optional embodiment, the interior of the fixing member is hollow and stores lubricating grease; and,

[0010] The fixing member is provided with a fuel filling port, and the fuel filling port is provided with a cover;

[0011] The hole wall of the positioning hole is provided with a plurality of oil outlet holes;

[0012] The oil outlet holes are circumferentially distributed on the hole wall of the positioning hole.

[0013] In an optional embodiment, the retaining frame includes a frame cover and a frame body, the frame cover is circumferentially provided with a plurality of assembly holes, the bottom inner walls of the assembly holes are threaded, and the frame body and the frame cover are connected by bolts and threaded engagement with the assembly holes.

[0014] In an optional embodiment, the cross-section of the soft scraper is arc-shaped and the number and position of the soft scraper correspond to the oil outlet holes.

[0015] In a second aspect, the embodiments of the present disclosure further provide a retaining frame, comprising: a frame body and a frame cover; the frame cover is provided with a plurality of fixing members, the fixing members are provided with positioning holes, the edges of the positioning holes are provided with a plurality of soft scrapers, and the positioning holes are provided with rolling balls, the rolling balls are tangent to the soft scrapers;

[0016] The interior of the fixing member is hollow and contains lubricating grease, and the wall of the positioning hole is provided with a plurality of oil outlet holes;

[0017] The number and position of the soft scrapers correspond to the oil outlet holes. When the ball rolls in the positioning hole, the soft scrapers are suitable for lubricating the ball and scraping off particles on the ball.

[0018] In an optional embodiment, the fixing member is provided with a fuel filling port and a cover is provided on the fuel filling port.

[0019] In an optional embodiment, a plurality of assembly holes are opened circumferentially on the frame cover, the bottom inner walls of the assembly holes are threaded, and the frame body and the frame cover are connected by bolts threadedly fitting the assembly holes.

[0020] The beneficial effect of the present utility model is that the needle roller bearing replaces the traditional rotating shaft with the ball, and the rotation of the needle roller in the needle roller bearing drives the ball to rotate. A soft scraper is provided on the edge of the first positioning hole in the fixing part. When the ball rotates, the soft scraper is suitable for scraping off particles on the ball, thereby reducing the wear of the ball and the needle roller by the particles, making the needle roller bearing more durable.

[0021] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The objectives and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 1 A three-dimensional diagram of a needle roller bearing and a retainer thereof provided in an embodiment of the present disclosure;

[0025] Figure 2 A cross-sectional view of a needle roller bearing provided in an embodiment of the present disclosure;

[0026] Figure 3 A cross-sectional view of a threaded hole of a needle roller bearing provided in an embodiment of the present disclosure;

[0027] Figure 4 A three-dimensional diagram of a needle roller bearing fixing member provided in an embodiment of the present disclosure.

[0028] In the picture:

[0029] 100, retaining frame; 110, fixing part; 111, cover; 120, first positioning hole; 121, oil outlet hole; 130, ball; 140, soft scraper; 150, frame cover; 151, assembly hole; 1512, bolt; 160, frame body; 170, needle roller hole; 180, second positioning hole; 200, needle roller. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0031] In this document, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or that a third component may be interposed between the first component and the second component. In addition, in the drawings, the thickness of components may be exaggerated or reduced in order to effectively describe technical content.

[0032] As used herein, when an element or layer is referred to as being "located on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly engaged to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intervening elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0033] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." when following a list of elements modify the entire list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0034] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a", "an" and "the" may also be intended to include plural forms, unless otherwise clearly indicated herein. The terms "comprise", "include" and "have" are inclusive and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the particular order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0035] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0036] Research has found the shortcomings of the existing technology: in some technologies, the needle roller of the needle roller bearing is rotated through the rotating shaft at both ends and is set in the needle roller hole of the retaining frame. There is a gap between the rotating shaft and the rotating shaft hole in the retaining frame. Particles are easily accumulated in the gap. Under conditions of insufficient lubrication, it will cause the rotating shaft to wear, thereby affecting the service life of the needle roller bearing.

[0037] Based on the above research, an embodiment of the present disclosure provides a needle roller bearing and a retainer thereof.

[0038] The defects in the above solutions are the results obtained by the inventors after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure in this article should be the contributions made by the inventors to the present disclosure during the disclosure process.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0040] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0041] See also Figure 1 and Figure 2 The present disclosure provides a needle roller bearing, comprising: a retainer 100; a plurality of needle roller holes 170 circumferentially disposed on the retainer 100; a fixing member 110 disposed at each end of each needle roller hole 170, with needle rollers 200 correspondingly disposed within each of the needle roller holes 170; a first positioning hole 120 disposed within the fixing member 110, and a second positioning hole 180 disposed on each end face of the needle roller 200; a ball 130 disposed between the first positioning hole 120 and the second positioning hole 180, and a plurality of soft scrapers 140 disposed along the edges of the first positioning hole 120, the soft scrapers 140 being tangential to the ball 130. When the bearing is operating, the needle rollers 200 drive the ball 130 to rotate, and the soft scrapers 140 are adapted to scrape off particles on the ball 130, thereby reducing wear on the ball 130 and the needle roller 200 caused by the particles, and making the needle roller bearing more durable.

[0042] See also Figure 3 In some embodiments, retainer 100 includes a cover 150 and a body 160. Cover 150 is circumferentially defined with a plurality of mounting holes 151, the bottom inner walls of which are threaded. Body 160 and cover 150 are connected by bolts 1512 threaded into mounting holes 151. The separate design of retainer 100, comprising cover 150 and body 160, facilitates disassembly and assembly, and facilitates replacement and maintenance of bearing components.

[0043] See also Figure 4 In some embodiments, the interior of the fixing member 110 is hollow and contains lubricating grease. Furthermore, the fixing member 110 is provided with a refueling port with a cap 111. This allows lubricating grease to be added to the fixing member 110 during bearing maintenance, thereby extending the bearing's service life. The positioning hole is provided with a plurality of oil outlet holes 121, distributed circumferentially along the positioning hole's wall. The soft scrapers 140 have an arc-shaped cross-section and correspond in number and position to the oil outlet holes 121. The lubricating grease is semi-solid when at rest. However, during bearing operation, friction and temperature fluctuations cause the lubricating grease to thin out and flow from the oil outlet holes 121 to the soft scrapers 140. The soft scrapers 140 lubricate the balls 130 and remove particulate matter from them, thereby reducing wear on the balls 130 and needle rollers 200 and enhancing the durability of the needle roller bearing. When the bearing stops operating, the lubricating grease returns to its original semi-solid state, making it less likely to leak.

[0044] Please see the attached Figure 1 In some embodiments, a retaining frame is further provided, including: a frame body 160 and a frame cover 150; a plurality of fixing members 110 are provided on the frame cover 150, a positioning hole is provided in the fixing member 110, a plurality of soft scrapers 140 are provided on the edge of the positioning hole, and a rolling ball 130 is provided in the positioning hole, and the rolling ball 130 is tangent to the soft scraper 140; the interior of the fixing member 110 is hollow and stores lubricating grease, and a plurality of oil outlet holes 121 are opened on the hole wall of the positioning hole; wherein the number and position of the soft scraper 140 correspond to the oil outlet holes 121, and when the rolling ball 130 rolls in the positioning hole, the soft scraper 140 is suitable for lubricating the rolling ball 130 and scraping off particles on the rolling ball 130 at the same time.

[0045] Please see the attached Figure 4 In some embodiments, the fixing member 110 is provided with a fuel filling port and a cover 111 is provided on the fuel filling port.

[0046] Please see the attached Figure 3 In some embodiments, a plurality of assembly holes 151 are opened circumferentially on the frame cover 150 , and the bottom inner wall of the assembly hole 151 has a thread. The frame body 160 and the frame cover 150 are connected by bolts 1512 and threadedly engaged with the assembly holes 151 .

[0047] To sum up, the needle roller bearing replaces the traditional rotating shaft with the ball 130, and the rotation of the needle roller 200 in the needle roller bearing drives the ball 130 to rotate. The edge of the first positioning hole 120 in the fixing part 110 is provided with a soft scraper 140 and lubricating grease is provided in the fixing part 110, and a plurality of oil outlet holes 121 are opened on the hole wall of the first positioning hole 120. When the bearing is running, the lubricating grease flows from the oil outlet holes 121 to the soft scraper 140. When the ball 130 and the needle roller 200 rotate, the soft scraper 140 is suitable for lubricating the ball 130 and the needle roller 200 and can also scrape off the particulate matter on the ball 130, thereby reducing the wear of the ball 130 and the needle roller 200 by the particulate matter, making the needle roller bearing more durable.

[0048] In the description of the embodiments of the present invention, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A needle roller bearing, characterized in that: include: A retaining frame (100) is provided with a plurality of needle roller holes (170) in a circumferential direction; Both ends of the needle roller hole (170) are provided with fixing members (110), and a needle roller (200) is correspondingly provided in the needle roller hole (170); Wherein, a first positioning hole (120) is provided in the fixing member (110), and second positioning holes (180) are provided on both end surfaces of the needle roller (200); and A rolling ball (130) is provided between the first positioning hole (120) and the second positioning hole (180), and a plurality of soft scrapers (140) are provided on the edge of the first positioning hole (120), wherein the soft scrapers (140) are tangent to the rolling ball (130).

2. The needle roller bearing according to claim 1, wherein: The fixing member (110) is configured to store lubricating grease inside; and The fixing member (110) is provided with a refueling port, and a cover (111) is provided on the refueling port; The hole wall of the positioning hole (120) is provided with a plurality of oil outlet holes (121); The oil outlet holes (121) are circumferentially distributed on the hole wall of the positioning hole (120).

3. The needle roller bearing according to claim 1, wherein: The retaining frame (100) comprises a frame cover (150) and a frame body (160); The frame cover (150) is provided with a plurality of assembly holes (151) on its circumferential surface, the bottom inner walls of the assembly holes (151) are threaded, and the frame body (160) and the frame cover (150) are connected to the assembly hole threads by bolts (1512).

4. The needle roller bearing according to claim 1, wherein The cross-section of the soft scraper (140) is arc-shaped, and the number and position of the soft scraper (140) correspond to the oil outlet holes (121).

5. A retainer, characterized in that: include: A frame body (160) and a frame cover (150); The frame cover (150) is provided with a plurality of fixing members (110), a positioning hole (120) is provided in the fixing member (110), a plurality of soft scrapers (140) are provided at the edge of the positioning hole (120), and a rolling ball (130) is provided in the positioning hole (120), and the rolling ball (130) is tangent to the soft scraper (140); The interior of the fixing member (110) is hollow and stores lubricating grease, and the wall of the positioning hole (120) is provided with a plurality of oil outlet holes (121); The number and position of the soft scrapers (140) correspond to the oil outlet holes (121). When the ball (130) rolls in the positioning hole (120), the soft scrapers (140) are suitable for lubricating the ball (130) and scraping off particles on the ball (130).

6. The retainer according to claim 5, wherein: The fixing member (110) is provided with a refueling port, and a cover (111) is provided on the refueling port.

7. The retainer according to claim 5, wherein: The frame cover (150) is provided with a plurality of assembly holes (151) on the circumferential direction, and the bottom inner walls of the assembly holes (151) are provided with threads, and The frame body (160) and the frame cover (150) are connected by bolts (1512) threadedly fitting with the assembly holes.

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