CN217502287U

CN217502287U - Double-row full-complement cylindrical roller bearing

Info

Publication number: CN217502287U
Application number: CN202221200070.8U
Authority: CN
Inventors: 陶治; 岳超; 温泉; 刘春雨; 宋廷宇; 于水
Original assignee: Dalian Metallurgy and Bearings Co Ltd
Current assignee: Dalian Metallurgy and Bearings Co Ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-09-27
Anticipated expiration: 2032-05-19

Abstract

The utility model belongs to the technical field of the bearing assembly manufacturing, concretely relates to double-row full complement cylindrical roller bearing, including the bearing inner race, the type mode of repairing of bearing inner race external diameter surface is the logarithm type of repairing. The utility model discloses an what bearing inner race external diameter direction adopted is that the logarithm is repaiied the type and is replaced the orthodrome, has increased the bearing capacity of a whole set of bearing.

Description

Double-row full-complement cylindrical roller bearing

Technical Field

The utility model belongs to the technical field of the bearing assembly manufacturing, concretely relates to double-row full complement cylindrical roller bearing.

Background

The bearing outer ring of most straightening machines at home and abroad adopts a large circular arc structure, and the bearing has the defect of low bearing capacity. The general double-row full-complement cylindrical roller bearing is also poor in sealing performance, single-layer sealing is mostly adopted, so that impurities and the like easily pollute the bearing, the bearing is mostly in a form that double inner rings are not connected, the inner rings are not fixed, and the bearing is easily subjected to movement in installation and transportation.

Disclosure of Invention

According to the defects existing in the prior art, the utility model aims at providing a high bearing, high sealed, easily processing and transportation biserial full complement cylindrical roller bearing.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a double-row full complement cylindrical roller bearing, includes the bearing inner race, the modification mode on bearing inner race external diameter surface is the logarithm modification.

Based on the technical scheme, the shape of the bearing outer ring of the logarithmic bus modification is convex, the bus of the bearing outer ring is a logarithmic curve, namely the outer diameter of the bearing outer ring conforms to an image of a logarithmic function.

Further, the double-row full-complement cylindrical roller bearing further comprises a bearing inner ring and two rows of rollers, the two rows of rollers are fully assembled between the bearing outer ring and the bearing inner ring, two sides of the bearing are respectively provided with a group of sealing structures, and the sealing structures seal an installation gap between the bearing inner ring and the bearing outer ring.

Further, the sealing structure comprises a dust cover, a spring ring and a sealing ring which are arranged in sequence from the outer side of the bearing to the inner side of the bearing.

Further, the dust cover is of a U-shaped structure, and an opening of the dust cover faces the inner side of the bearing.

Furthermore, the inner diameter of the outer ring of the bearing is provided with a sealing groove, a spring ring is installed in the sealing groove, the spring ring is in clearance fit with the sealing groove in the axial direction, and the spring ring is in interference fit with the sealing groove in the radial direction. The spring ring and the sealing groove are in radial relation, the outer diameter of the spring ring which is not assembled is larger than the outer diameter of the sealing groove, and the spring ring is integrally opened and is made of elastic spring steel, so that the outer diameter of the spring ring is basically consistent with that of the sealing groove after the spring ring is assembled in the sealing groove due to the constraint of the outer diameter of the sealing groove during assembly.

Further, a thin steel seal is assembled in the seal groove and arranged outside the spring ring. The thin steel seal plays a role in outer steel seal and has certain rigidity.

Further, the sealing washer is through the steel skeleton support design of parcel in its inside, and the sealing washer passes through assembly portion and bearing inner race internal diameter cooperation sealing, and the sealing washer is sealed through first seal lip and second seal lip and bearing inner race external diameter cooperation.

Furthermore, the assembling part is in clearance fit with the side wall of the flange of the outer ring at two ends and the end face of the spring ring in the axial direction, and the assembling part is in interference fit with the inner diameter of the outer ring of the bearing in the radial direction; the first sealing lip is arranged on the inner side of the second sealing lip, the first sealing lip is in micro interference fit with the outer diameter of the bearing inner ring, the second sealing lip is in interference fit with the outer diameter of the bearing inner ring, namely the interference magnitude of the first sealing lip is smaller than that of the second sealing lip; the outer diameter surface of the second sealing lip is embedded into the spring steel wire structure. The spring steel wire structure plays a role in restraining and sealing.

Furthermore, the bearing inner ring is of a double-inner-ring split structure, the inner diameter of one end, close to each other, of the two bearing inner rings is provided with a connecting groove, and the two ends of the connecting ring are respectively installed in the two connecting grooves so as to connect the two bearing inner rings.

The utility model has the advantages that: the utility model discloses an what bearing inner race external diameter direction adopted is that the logarithm is repaiied the type and is replaced the orthodrome, has increased the bearing capacity of a whole set of bearing.

Drawings

FIG. 1 is a schematic structural view of a double-row full complement cylindrical roller bearing of the present invention;

FIG. 2 is an enlarged view of the seal of FIG. 1;

FIG. 3 is a logarithmic curve formed by amplifying the outer ring bus of the double-row full-complement cylindrical roller bearing of the present invention by 5000 times in the Y direction without amplifying in the x direction;

in the figure: 1. the bearing comprises a bearing outer ring, a bearing inner ring, a bearing roller, a bearing outer ring, a bearing inner ring, a roller, a dustproof cover, a bearing inner ring, a connecting ring, a bearing outer ring, a bearing inner ring, a roller, a dustproof cover, a connecting ring, a sealing ring, a spring ring and a thin steel seal, wherein the bearing outer ring, the bearing inner ring, the bearing outer ring, the roller, the dustproof cover, the bearing inner ring, the connecting ring, the sealing ring and the thin steel seal;

a. the sealing ring assembling part comprises a sealing ring assembling part b, a first sealing lip of a sealing ring, a second sealing lip of the sealing ring, a sealing ring and a spring steel wire.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to the attached drawings 1-3, the double-row full-complement cylindrical roller bearing comprises a bearing outer ring 1, wherein the modification mode of the outer diameter surface of the bearing outer ring 1 is logarithmic modification.

Based on the technical scheme, the shape of the bearing outer ring of the logarithmic generatrix modification is convex, the generatrix of the bearing outer ring is a logarithmic curve, namely the outer diameter of the bearing outer ring conforms to an image of a logarithmic function, and the image is shown in fig. 2.

Further, the double-row full-complement cylindrical roller bearing further comprises a bearing inner ring 2 and two rows of rollers 3, the two rows of rollers 3 are fully assembled between the bearing outer ring 1 and the bearing inner ring 2, a group of sealing structures are respectively arranged on two sides of the bearing, and the sealing structures seal an installation gap between the bearing inner ring 2 and the bearing outer ring 1.

Further, the sealing structure comprises a dust cover 4, a spring ring 7 and a sealing ring 6 which are arranged in sequence from the outer side of the bearing to the inner side of the bearing.

Further, the dust cover 4 is provided with a U-shaped structure, and the opening of the dust cover faces the inner side of the bearing.

Further, the inner diameter of the bearing outer ring 1 is provided with a sealing groove, a spring ring 7 is installed in the sealing groove, the spring ring 7 is in clearance fit with the sealing groove in the axial direction, and the spring ring 7 is in interference fit with the sealing groove in the radial direction. The radial relation between the spring ring 7 and the sealing groove is that the outer diameter of the spring ring which is not assembled is larger than the outer diameter of the sealing groove, and because the spring ring is integrally opened and is made of elastic spring steel, the outer diameter of the spring ring is basically consistent with that of the sealing groove after the spring ring is assembled in the sealing groove due to the constraint of the outer diameter of the sealing groove during assembly.

Further, a thin steel seal 8 is fitted in the seal groove, and the thin steel seal 8 is disposed outside the spring ring 7. The thin steel seal 8 plays a role in outer steel sealing and has certain rigidity, and the thin steel seal 8 extends to the sealing cover 4 with the outer diameter of the bearing inner ring.

Further, the sealing ring 6 is supported and shaped through a steel skeleton wrapped inside the sealing ring 6, the sealing ring 6 is matched and sealed with the inner diameter of the bearing outer ring through the assembling portion a, and the sealing ring 6 is matched and sealed with the outer diameter of the bearing inner ring through the first sealing lip b and the second sealing lip c.

Further, the assembling part a is in clearance fit with the side wall of the flange of the outer ring 1 and the end face of the spring ring 7 at two ends in the axial direction, and the assembling part a is in interference fit with the inner diameter of the bearing outer ring 1 in the radial direction; the first sealing lip b is arranged on the inner side of the second sealing lip c, the first sealing lip b is in micro interference fit with the outer diameter of the bearing inner ring 2, the second sealing lip c is in interference fit with the outer diameter of the bearing inner ring 2, namely the interference magnitude of the first sealing lip b is smaller than that of the second sealing lip c, and the outer diameter surface of the second sealing lip c is embedded into the spring steel wire structure d. The spring wire structure d plays a role in restraining and sealing.

Further, the bearing inner ring 2 is of a double-inner-ring split structure, connecting grooves are formed in the inner diameter of one end, close to each other, of the two bearing inner rings, and the two ends of the connecting ring 5 are installed in the two connecting grooves respectively to connect the two bearing inner rings.

The application adopts double-layer sealing, and the sealing performance of the sealing structure is enhanced by adopting the one-layer steel skeleton and nitrile rubber combined sealing and thin steel sealing. The outer diameter direction of the outer ring adopts a logarithmic modification type to replace a large circular arc, so that the bearing of the whole set of bearing is increased. The two inner rings are connected by the connecting ring, so that the stable connection of the inner rings of the bearing is ensured, and the play is reduced.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The above list is only the preferred embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims

1. The utility model provides a double-row full complement cylindrical roller bearing which characterized in that: the device comprises a bearing outer ring, wherein the shape modification mode of the outer diameter surface of the bearing outer ring is logarithmic shape modification; the bearing is characterized by further comprising a bearing inner ring and two rows of rollers, wherein the two rows of rollers are fully assembled between the bearing outer ring and the bearing inner ring, a group of sealing structures are respectively arranged on two sides of the bearing, and the sealing structures are used for sealing an installation gap between the bearing inner ring and the bearing outer ring.

2. The double-row full complement cylindrical roller bearing of claim 1, wherein: the sealing structure comprises a dust cover, a spring ring and a sealing ring which are sequentially arranged from the outer side of the bearing to the inner side of the bearing.

3. The double-row full complement cylindrical roller bearing of claim 2, wherein: the dust cover is of a U-shaped structure, and an opening of the dust cover faces the inner side of the bearing.

4. The double row full complement cylindrical roller bearing of claim 2, wherein: the bearing outer ring inner diameter is provided with the seal groove, and the spring ring is installed in the seal groove, and spring ring and seal groove clearance fit in the axial direction, spring ring and seal groove are footpath interference fit.

5. The double-row full complement cylindrical roller bearing of claim 4, wherein: the thin steel seal is assembled in the seal groove and arranged outside the spring ring.

6. The double-row full complement cylindrical roller bearing of claim 2, wherein: the sealing ring is supported and shaped through a steel skeleton wrapped inside the sealing ring, the sealing ring is matched and sealed with the inner diameter of the bearing outer ring through the assembling part, and the sealing ring is matched and sealed with the outer diameter of the bearing inner ring through the first sealing lip and the second sealing lip.

7. The double-row full complement cylindrical roller bearing of claim 6, wherein: the assembling part is in clearance fit with the side wall of the outer ring and the end face of the spring ring at two ends in the axial direction, and is in interference fit with the inner diameter of the outer ring of the bearing in the radial direction; the first sealing lip is in interference fit with the outer diameter of the bearing inner ring, the second sealing lip is in interference fit with the outer diameter of the bearing inner ring, and the outer diameter surface of the second sealing lip is embedded into the spring steel wire structure.

8. The double-row full complement cylindrical roller bearing of claim 1, wherein: the bearing inner race is double inner race split type structure, and the internal diameter of the one end that two bearing inner races are close to each other is provided with the spread groove, thereby installs respectively at two spread grooves at the both ends of connecting ring and connects two bearing inner races.