CN219119647U

CN219119647U - High structural strength needle bearing

Info

Publication number: CN219119647U
Application number: CN202221750607.8U
Authority: CN
Inventors: 于伟峰; 朱立新
Original assignee: Jiashan Berg Bearing Co ltd
Current assignee: Jiashan Berg Bearing Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2023-06-02
Anticipated expiration: 2032-07-08

Abstract

The utility model discloses a high-structural-strength needle roller bearing, which comprises a bearing outer ring, a retainer and a needle roller, wherein the retainer is arranged on the outer ring; the bearing outer ring is a cylindrical barrel with openings at two ends; the inner wall of the bearing outer ring is provided with a plurality of needle roller mounting positions, the needle roller mounting positions are arranged at intervals, non-needle roller mounting positions between gaps of the outer wall of the bearing outer ring corresponding to the needle roller mounting positions are arranged in a concave manner, so that the whole cross section of the bearing outer ring is of a wavy annular structure, the crest position of the bearing outer ring corresponds to the needle roller mounting positions, and the trough position corresponds to the non-needle roller mounting positions; the outer wall of the wavy annular structure has higher compressive strength than that of a perfect circle; meanwhile, the wavy bearing outer ring has a stopping effect during installation; the contact part of the needle roller and the shaft is in surface contact, so that the abrasion of the needle roller can be effectively reduced, and the service life of the bearing is prolonged.

Description

High structural strength needle bearing

Technical Field

The utility model relates to a needle bearing, in particular to a needle bearing with high structural strength.

Background

The needle bearing is a roller bearing with cylindrical rollers, which are thin and long with respect to their diameter. Such rollers are known as needle rollers. In spite of the smaller cross section, the bearing has higher load bearing capacity, and the needle bearing is provided with thin and long rollers, so that the radial structure is compact, the inner diameter size and the load bearing capacity are the same as those of other types of bearings, the outer diameter is minimum, and the bearing is particularly suitable for supporting structures with limited radial installation size.

According to different application occasions, the bearing without an inner ring or the needle roller and retainer assembly can be selected, at the moment, the journal surface and the shell hole surface matched with the bearing are directly used as the inner rolling surface and the outer rolling surface of the bearing, and in order to ensure that the load capacity and the running performance are the same as those of the bearing with the ring, the hardness, the processing precision and the surface quality of the surface of the shaft or the shell Kong Gundao are similar to those of a raceway of the bearing ring.

The outer ring of the needle bearing is quite thin due to the structural characteristics of the needle bearing, and the thinner the outer ring of the bearing is, the lower the structural strength of the bearing is.

Disclosure of Invention

The present utility model is directed to a needle bearing with high structural strength, which solves the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a high-structural-strength needle bearing comprises a bearing outer ring, a retainer and a needle; the bearing outer ring is a cylindrical barrel with openings at two ends; the inner wall of the bearing outer ring is provided with a plurality of needle roller mounting positions, the needle roller mounting positions are arranged at intervals, non-needle roller mounting positions between gaps of the outer wall of the bearing outer ring corresponding to the needle roller mounting positions are arranged in a concave manner, so that the whole cross section of the bearing outer ring is of a wavy annular structure, the crest position of the bearing outer ring corresponds to the needle roller mounting positions, and the trough position corresponds to the non-needle roller mounting positions; the advantage of this solution is that the compressive strength of the wavy annular structure of the same wall thickness is higher than that of a perfect circle.

As a further scheme of the utility model: the bearing outer ring can be formed by stamping.

As a further scheme of the utility model: and flanges are arranged at two ends of the outer ring of the bearing.

As a further scheme of the utility model: the retainer and the needle rollers are located in the bearing outer ring.

As a further scheme of the utility model: and a plurality of needle roller mounting grooves are uniformly arranged on the retainer at intervals.

As a further scheme of the utility model: the side walls at the two ends of the needle roller are arc-shaped, namely the needle roller is not cylindrical and is similar to a long and narrow drum shape, and the diameters of the two ends of the needle roller are smaller than the diameter of the middle section of the needle roller.

Compared with the prior art, the utility model has the beneficial effects that:

the proposal has the advantages that the compressive strength of the wavy annular structure with the same wall thickness is higher than that of a perfect circle; meanwhile, the wavy bearing outer ring has a stopping function during installation, and a stopping groove is not required to be machined on the bearing outer ring or a stopping washer structure is adopted for auxiliary installation;

the contact part of the needle roller and the shaft is in surface contact, so that the abrasion of the needle roller can be effectively reduced, and the service life of the bearing is prolonged.

Drawings

Fig. 1 is a schematic structural view of a needle bearing with high structural strength.

Fig. 2 is a side view of a needle bearing of high structural strength.

Fig. 3 is a schematic view of the structure of the outer ring of the needle bearing with high structural strength.

Fig. 4 is a schematic view of the structure of the needle roller in the needle roller bearing with high structural strength.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, a needle bearing with high structural strength includes a bearing outer ring 100, a cage 200, and a needle 300;

the bearing outer ring 100 is a cylindrical cylinder with openings at two ends, flanges 103 are arranged at two ends of the bearing outer ring 100, a retainer 200 and a needle 300 are positioned in the bearing outer ring, and a plurality of needle mounting grooves 201 are uniformly arranged on the retainer 200 at intervals

The main scheme for improving the structural strength of the needle roller bearing is that the structure of the bearing outer ring is different from that of a standard right circular cylinder body of the traditional needle roller bearing outer ring;

firstly, defining (arranging) a plurality of needle roller mounting positions 101 on the inner wall of a bearing outer ring 100, wherein the needle roller mounting positions 101 are arranged at intervals, non-needle roller mounting positions 102 between the outer wall of the bearing outer ring 100 corresponding to gaps of the needle roller mounting positions 101 are arranged in a concave manner, so that the whole cross section of the bearing outer ring 100 is of a wavy annular structure, the crest position of the bearing outer ring 100 corresponds to the needle roller mounting positions 101, and the trough position corresponds to the non-needle roller mounting positions 102; the proposal has the advantages that the compressive strength of the wavy annular structure with the same wall thickness is higher than that of a perfect circle; meanwhile, the bearing outer ring 100 of the present embodiment may be formed by stamping,

meanwhile, the wavy bearing outer ring 100 has a stopping function during installation, and a stopping groove is not required to be machined on the bearing outer ring or a stopping washer structure is adopted for auxiliary installation;

correspondingly, the user should know that the motion of the needle roller bearing of the scheme is not the optimal working state (the optimal working state is that the needle roller moves relative to the rotating shaft and the outer ring of the bearing), so that the needle roller bearing of the scheme is only suitable for a scene with low rotating speed and low rotating times, similar to a rotating joint of a door closer, but similar to an automobile gearbox and the like in a scene with high rotating speed, the wear speed of the bearing of the scheme is very high, and the scheme is not suitable for the situation.

In this scheme the lateral wall at the both ends of kingpin 300 all is the arc, and kingpin 300 is not a cylindric promptly, is similar to a long and narrow drum shape, and the diameter at kingpin 300 both ends is compared in the diameter of kingpin 300 middle section and is about to be little for when using, because the axle that needle bearing cup jointed can take place the side bending because the problem of service environment or machining precision, both ends are curved kingpin 300 this moment, laminate this axle more promptly, if cylindric kingpin takes place the side bending at the axle, the contact department of columniform kingpin both ends and axle is the point contact, and the contact department of the utility model discloses a kingpin 300 and axle is the face contact, can effectively reduce the wearing and tearing of kingpin, improves bearing's life.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", "left", "right", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in place when the inventive product is used, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, terms such as "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Claims

1. A high-structural-strength needle bearing comprises a bearing outer ring, a retainer and a needle; the bearing outer ring is a cylindrical barrel with openings at two ends; the bearing is characterized in that a plurality of needle roller mounting positions are arranged on the inner wall of the bearing outer ring, the needle roller mounting positions are arranged at intervals, non-needle roller mounting positions between gaps of the outer wall of the bearing outer ring corresponding to the needle roller mounting positions are arranged in a concave manner, so that the whole cross section of the bearing outer ring is of a wavy annular structure, the crest position of the bearing outer ring corresponds to the needle roller mounting positions, and the trough position corresponds to the non-needle roller mounting positions; the compressive strength of the wavy annular structure of the same wall thickness is higher than that of a perfect circle.

2. The high structural strength needle bearing of claim 1, wherein said bearing outer race is formed by stamping.

3. The high structural strength needle bearing of claim 1, wherein the outer race of the bearing has ribs at both ends.

4. The high structural strength needle bearing of claim 1, wherein the cage and needle are located within the bearing outer race.

5. The high structural strength needle bearing of claim 1, wherein said cage is provided with a plurality of needle mounting grooves spaced apart uniformly.

6. The high-strength needle bearing of claim 1, wherein the side walls of both ends of the needle are arcuate, i.e., the needle is not cylindrical, resembling an elongated drum, and the diameter of both ends of the needle is smaller than the diameter of the middle section of the needle.