CN219432294U

CN219432294U - Cylindrical roller bearing

Info

Publication number: CN219432294U
Application number: CN202223593703.9U
Authority: CN
Inventors: 刘维月
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-07-28
Anticipated expiration: 2032-12-31

Abstract

The utility model provides a cylindrical roller bearing, which belongs to the technical field of bearings and comprises an outer ring, an inner ring and a retainer; the retainer is of a circular ring type frame structure, a plurality of rectangular pockets are formed between the outer ring and the inner ring, rollers are arranged in the rectangular pockets and are respectively in rolling fit with the outer ring and the inner ring, an oil storage tank is formed in the inner wall of the retainer, and the oil storage tank is communicated with the pockets; the lubricating oil is added into the pocket, the oil storage tank increases the oil storage capacity in the pocket, the possibility that the lubricating oil overflows from the pocket is reduced, the waste of the lubricating oil is effectively reduced, the lubricating effect of the roller is improved due to the increase of the oil storage capacity, and the smoothness of the bearing in the use process is further improved.

Description

Cylindrical roller bearing

Technical Field

The utility model belongs to the technical field of bearings, and particularly relates to a cylindrical roller bearing.

Background

The main function of the bearing is to support the mechanical rotator, reduce the friction coefficient in the motion process and ensure the rotation precision; the roller bearing is a rolling bearing using short cylinder, cone or waist drum roller as rolling body, and mainly has the structural forms of cylindrical roller, double-row centripetal spherical roller, conical roller, thrust roller, etc.

The existing cylindrical roller bearing comprises an outer ring, an inner ring and a retainer, wherein the retainer is a circular ring type frame provided with rectangular pockets, and rollers are arranged in the pockets.

During the installation and use of the bearing, lubricating oil is generally required to be added to the surfaces of the rollers so as to improve the lubricating performance of the bearing, and during the addition of the lubricating oil and the use of the bearing, the lubricating oil leaks out of the pockets, so that the problems of lubricating oil waste and low lubricating performance of the bearing are caused.

Disclosure of Invention

The utility model aims to provide a cylindrical roller bearing, which solves the technical problems that in the prior art, in the process of adding lubricating oil to the surfaces of rollers, the lubricating oil leaks out of a pocket, so that the lubricating oil is wasted, and the lubricating performance of the bearing is affected.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the cylindrical roller bearing comprises an outer ring, an inner ring and a retainer; the retainer is of a circular ring type frame structure, is located between the outer ring and the inner ring, is provided with a plurality of rectangular pockets, rollers are arranged in the rectangular pockets, the rollers are respectively in rolling fit with the outer ring and the inner ring, and an oil storage tank is arranged on the inner wall of the retainer and is communicated with the pockets.

In combination with the above technical solution, in a possible implementation manner, the diameters of the two ends of the roller are smaller than the diameter of the middle part of the roller.

In combination with the above technical solution, in one possible implementation manner, three rollers are disposed in each pocket.

In combination with the above technical solution, in one possible implementation manner, the oil storage tank is located at one side of the roller in the length direction, and the connection position between the oil storage tank and the adjacent roller is opposite to the arrangement position.

In combination with the above technical solution, in one possible implementation manner, the depth of the oil storage tank gradually decreases from the bottom end to the open end.

In combination with the above technical solution, in one possible implementation manner, the oil storage tanks are at least two, two oil storage tanks are located on the same side of the roller, a guide tank is arranged between the two oil storage tanks, and two ends of the guide tank are respectively communicated with the two oil storage tanks.

In combination with the above technical solution, in one possible implementation manner, the guide groove is a threaded structure.

In combination with the above technical solution, in one possible implementation manner, the inner wall of the cage is provided with two grooves, and the two grooves are located at two ends of the roller.

In combination with the above technical solution, in one possible implementation manner, the outer ring is provided with a containing groove for containing the roller, and a containing cavity is formed between two ends of the roller and an inner wall of the containing groove.

In combination with the above technical solution, in one possible implementation manner, an oil groove is formed in the middle of the outer ring along the circumferential direction, and at least one pin hole is formed in the oil groove.

The cylindrical roller bearing provided by the utility model has the beneficial effects that: the oil storage tank increases the oil storage capacity in the pocket hole, reduces the possibility of overflowing of lubricating oil from the pocket hole, effectively reduces the waste of the lubricating oil, improves the fluency of the rotation of the roller, and further improves the fluency of the bearing in the use process.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a cylindrical roller bearing according to an embodiment of the present utility model;

FIG. 2 is a schematic view showing the structure of a cage;

FIG. 3 is a partial schematic view showing a reservoir;

fig. 4 is a partially enlarged schematic view showing a portion a in fig. 2.

Wherein, each reference sign is as follows in the figure:

10. an outer ring; 20. an inner ring; 30. a retainer; 31. a pocket; 32. an oil storage tank; 33. a groove; 40. a roller; 50. a guide groove; 60. a receiving groove; 70. an oil groove; 80. pin holes.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only some, but not all, of the embodiments of the present application, and that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be further noted that the drawings and embodiments of the present utility model mainly describe the concept of the present utility model, and on the basis of the concept, some specific forms and arrangements of connection relations, position relations, power units, power supply systems, hydraulic systems, control systems, etc. may not be completely described, but those skilled in the art may implement the specific forms and arrangements described above in a well-known manner on the premise of understanding the concept of the present utility model.

When an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

The terms "inner" and "outer" refer to the inner and outer relative to the outline of each component itself, and the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. refer to the orientation or positional relationship as shown based on the drawings, merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways and the spatially relative descriptions used herein are construed accordingly.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" means two or more, and the meaning of "a number" means one or more, unless specifically defined otherwise.

The present utility model will now be described with reference to a cylindrical roller bearing.

As shown in fig. 1 and 2, the cylindrical roller bearing provided in the first embodiment of the present utility model includes an outer ring 10, an inner ring 20, and a cage 30 located between the outer ring 10 and the inner ring 20, wherein the outer ring 10 and the inner ring 20 are both in a circular ring structure, the cage 30 is in a circular frame structure, and the outer ring 10, the inner ring 20, and the cage 30 are coaxially arranged; the retainer 30 has offered a plurality of rectangle pocket holes 31 along the axial, all is provided with roller 40 in a plurality of pocket holes 31, roller 40 respectively with outer lane 10 and inner circle 20 rolling fit, the diameter at roller 40 both ends is less than the diameter at roller 40 middle part, in this application embodiment, corresponds in each pocket hole 31 and is provided with three roller 40, and the setting of three roller 40 is listed as, oil groove 70 has been seted up along circumference to the middle part of outer lane 10 outer wall, is provided with a pinhole 80 at least in the oil groove 70.

The pin holes 80 on the oil groove 70 play a role in positioning, so that the rotation or axial movement of the outer ring 10 is effectively avoided, and the service life of the bearing is prolonged; the diameter at both ends of the roller 40 is smaller than the diameter in the middle part, so that the circumferential friction force of the roller 40 is reduced, the roller 40 can be fully lubricated, the lubrication effect of the roller 40 is improved, the noise in the use process of the bearing is reduced, the three rollers 40 are arranged in parallel, the rotation flexibility of the roller 40 is improved, and the service life of the bearing is further prolonged.

As shown in fig. 3 and 4, the inner wall of the retainer 30 is provided with oil storage grooves 32, the oil storage grooves 32 are communicated with the pockets 31, each roller 40 is correspondingly provided with two oil storage grooves 32, the two oil storage grooves 32 are symmetrically distributed at two ends of the roller 40 along the self direction, the connection parts of the oil storage grooves 32 and the adjacent rollers 40 are opposite to each other, and the depth of the oil storage grooves 32 is gradually reduced from the bottom end to the opening end; in the embodiment of the application, two oil storage tanks 32 are arranged on one side of a pocket 31, a guide groove 50 is communicated between the two oil storage tanks 32, the guide groove 50 is positioned on the inner wall of the pocket 31, in the embodiment of the application, the guide groove 50 is of a threaded structure, an accommodating groove 60 for accommodating a roller 40 is formed on one side of an outer ring 10, which is close to a retainer 30, a gap is formed between two ends of the roller 40 and the inner wall of the accommodating groove 60, and the gap is formed to increase the storage capacity of lubricating oil; the screw hole has been seted up to the oil storage tank 32 inner wall, and the recess 33 has been seted up to the holder 30 inner wall, and recess 33 and pocket 31 intercommunication, recess 33 are provided with two, and two recesses 33 are located the both ends of roller 40.

The depth of the oil storage groove 32 from the bottom end to the opening end is gradually reduced, the volume of the oil storage groove 32 for storing lubricating oil is increased, the possibility of overflowing of the lubricating oil in the oil storage groove 32 is reduced, the storage capacity of the lubricating oil is further increased by the guide groove 50 and the groove 33, and the lubricating performance of the roller 40 is improved; the connection part of the oil storage tank 32 and the adjacent roller 40 is arranged right opposite, so that the lubrication effect on the roller 40 is further improved; the guide groove 50 is of a thread structure, so that in the process of rotating the roller 40, the thread structure drives lubricating oil in the pocket 31 to move towards the two ends of the roller 40, the guide groove has a guide effect on the flow direction of the lubricating oil, the lubricating effect of the lubricating oil on the roller 40 is improved, and the service life of the bearing is further prolonged.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Claims

1. A cylindrical roller bearing, characterized by comprising:

an outer ring (10);

an inner ring (20);

the retainer (30) is of a circular ring type frame structure, a plurality of rectangular pockets (31) are formed between the outer ring (10) and the inner ring (20), rollers (40) are arranged in the pockets (31), the rollers (40) are respectively in rolling fit with the outer ring (10) and the inner ring (20), an oil storage groove (32) is formed in the inner wall of the retainer (30), and the oil storage groove (32) is communicated with the pockets (31);

the diameter of the two ends of the roller (40) is smaller than the diameter of the middle part of the roller (40).

2. The cylindrical roller bearing according to claim 1, characterized in that: three rollers (40) are arranged in each pocket (31).

3. The cylindrical roller bearing according to claim 2, characterized in that: the oil storage tank (32) is positioned at one side of the length direction of the roller (40), and the connection part of the oil storage tank (32) and the adjacent roller (40) is arranged right opposite.

4. The cylindrical roller bearing according to claim 1, characterized in that: the depth of the oil storage tank (32) gradually decreases from the bottom end to the opening end.

5. The cylindrical roller bearing according to claim 1, characterized in that: the oil storage tanks (32) are at least two, the two oil storage tanks (32) are positioned on the same side of the roller (40), and a guide groove (50) is communicated between the two oil storage tanks (32).

6. The cylindrical roller bearing according to claim 5, wherein: the guide groove (50) is of a threaded structure.

7. The cylindrical roller bearing according to claim 1, characterized in that: the inner wall of the retainer (30) is provided with grooves (33), two grooves (33) are arranged, and the two grooves (33) are positioned at two ends of the roller (40).

8. The cylindrical roller bearing according to claim 1, characterized in that: the outer ring (10) is provided with a containing groove (60) for containing the rollers (40), and gaps between the two ends of the rollers (40) and the inner wall of the containing groove (60) are formed.

9. The cylindrical roller bearing according to claim 1, characterized in that: an oil groove (70) is formed in the middle of the outer ring (10) along the circumferential direction, and at least one pin hole (80) is formed in the oil groove (70).