CN212733563U

CN212733563U - High-strength roller

Info

Publication number: CN212733563U
Application number: CN202020611180.8U
Authority: CN
Inventors: 俞恩荣
Original assignee: Yangzhou Jinrong Machinery Co ltd
Current assignee: Yangzhou Jinrong Machinery Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-03-19
Anticipated expiration: 2030-04-21

Abstract

The utility model belongs to the field of roller equipment, in particular to a high-strength roller; the roll comprises a roll body, roll necks and roll heads, wherein two ends of the roll body are connected to the corresponding roll heads through the roll necks respectively; the roll body is characterized by comprising a first roll part and a second roll part, wherein the second roll part is detachably arranged in the middle of the first roll part, the roll neck, the roll head and the first roll part are made of hard alloy materials, and the second roll part is made of ceramic materials. The roller body comprises a first roller part and a second roller part, and the second roller part is detachably arranged in the middle of the first roller part, so that the roller body is convenient to detach and mount, and the maintenance cost is reduced; the second roller part is made of a composite ceramic material of zirconia and alumina, and proper zirconia is added into the alumina, so that the toughness of the alumina ceramic can be enhanced, the roller body has multiple advantages of high strength, wear resistance and the like, and the roller can be used in a severe environment.

Description

High-strength roller

Technical Field

The utility model belongs to roll equipment field, concretely relates to high strength roll.

Background

The rolls are tools for plastically deforming (rolled stock) metal and are important consumable parts for determining the efficiency of the rolling mill and the quality of the rolled stock. The steel is usually rolled by means of the pressure generated when a pair or a group of rolls is rolled. The traditional roller has insufficient strength, so that the quality of rolled materials is influenced, the working efficiency of a roller machine is reduced, and serious resource waste is caused. In addition, the roller works under the conditions of high temperature or large temperature change, and the roller is alternately heated and cooled, so that cracks are easily generated gradually under the action of alternating stress.

Therefore, a new technical solution should be provided to solve the above problems.

SUMMERY OF THE UTILITY MODEL

To the technical problem in the background art, the utility model provides a high strength roll has solved.

The utility model provides a following technical scheme:

a high-strength roller comprises a roller body, a roller neck and a roller head, wherein two ends of the roller body are connected to the corresponding roller heads through the roller neck respectively; the roller body comprises a first roller part and a second roller part, the second roller part is detachably arranged in the middle of the first roller part, the roller neck, the roller head and the first roller part are made of hard alloy materials, and the second roller part is made of ceramic materials.

Preferably, the first roller part is cylindrical overall, a groove is formed in the middle of the first roller part, and the second roller part is nested in the groove.

Preferably, two of the second roller portions are disposed in the groove.

Preferably, the second roller portion is fixed to the first roller portion by a locking bolt, and the locking bolt is close to an end of the first roller portion.

Preferably, the second roller part is provided with at least three threaded holes matched with the locking bolts.

Preferably, the cross section of the roller head is circular, and the surface of the roller head is provided with a key groove.

Preferably, the second roll portion is a composite ceramic material of zirconia and alumina.

The utility model has the advantages that: the roller body comprises a first roller part and a second roller part, and the second roller part is detachably arranged in the middle of the first roller part, so that the roller body is convenient to detach and mount, and the maintenance cost is reduced; the second roller part is made of a composite ceramic material of zirconia and alumina, and proper zirconia is added into the alumina, so that the toughness of the alumina ceramic can be enhanced, the roller body has multiple advantages of high strength, wear resistance and the like, and the roller can be used in a severe environment.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic perspective view of the device of the present invention;

FIG. 2 is a schematic cross-sectional view of the apparatus of the present invention;

FIG. 3 is a schematic structural view of the device of the present invention without the second roller;

FIG. 4 is a schematic structural view of a second roller portion of the apparatus of the present invention;

labeled as: 1. a roll body; 11. a first roller section; 111. a groove; 12. a second roller section; 121. a threaded hole; 2. a roll neck; 3. a roll head; 31. a keyway; 4. and locking the bolt.

Detailed Description

The conception, specific structure and technical effects of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the description of the upper, lower, left, right, etc. used in the present invention is only relative to the mutual positional relationship of the components of the present invention in the drawings.

The following describes preferred embodiments of the present invention in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, a high strength roll includes a roll body 1, a roll neck 2, and roll heads 3, and both ends of the roll body 1 are connected to the respective roll heads 3 by the roll neck 2, respectively.

The roll body 1 includes a first roll portion 11 and a second roll portion 12, and the second roll portion 12 is detachably disposed in the middle of the first roll portion 11. The roll neck 2, the roll head 3 and the first roll portion 11 are made of cemented carbide, and the second roll portion 12 is made of ceramic. The traditional roller is made of metal materials, the strength of the traditional roller is relatively reduced compared with that of ceramic materials, cracks are easy to appear in the roller body 1 under severe environmental conditions after long-time use, the ceramic materials are used for replacing the manufacturing cost, but the surface materials of the roller body 1 are replaced by the ceramic materials, on one hand, the manufacturing cost can be relatively reduced, the strength of the other surface of the roller body is relatively improved, the roller can be used under severe environments, and the cracks are difficult to appear due to the fact that the expansion coefficient of the ceramic materials is small.

The first roller part 1 is cylindrical as a whole, a groove 111 is formed in the middle of the first roller part, the second roller parts 12 are semicircular, and the two second roller parts 12 are nested in the groove 111. At least three matching threaded holes 121 are provided in the second roller part 12. The locking bolt 4 fixes the second roller part 12 to the first roller part 11 through the screw hole 121, and the locking bolt 4 is close to the end of the first roller part 11. Install second roll portion 12 on first roll portion 11 through the mode of concatenation, convenient to detach and installation have reduced cost of maintenance.

The roller head 3 is a part for transmitting the torque of the roller, the section of the roller head 3 is circular, the surface of the roller head is provided with a key groove 31, and the key in the output shaft of the transmission mechanism is matched with the key groove 31, so that the rotation of the whole roller is realized.

The second roll part 12 is made of a composite ceramic material of zirconia and alumina, and the appropriate zirconia is added into the alumina to enhance the toughness of the alumina ceramic, so that the roll body 1 has multiple advantages of high strength, wear resistance and the like.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-strength roller comprises a roller body, a roller neck and a roller head, wherein two ends of the roller body are connected to the corresponding roller heads through the roller neck respectively; the roll body is characterized by comprising a first roll part and a second roll part, wherein the second roll part is detachably arranged in the middle of the first roll part, the roll neck, the roll head and the first roll part are made of hard alloy materials, and the second roll part is made of ceramic materials.

2. The high-strength roller as claimed in claim 1, wherein the first roller portion is generally cylindrical, and has a groove in the middle thereof, and the second roller portion is nested in the groove.

3. A high strength roll according to claim 2 wherein two of said second roll portions are disposed in said groove.

4. A high strength roll according to claim 3 wherein the second roll portion is secured to the first roll portion by a locking bolt adjacent an end of the first roll portion.

5. The high strength roll according to claim 4, wherein the second roll portion is provided with at least three threaded holes matching the locking bolts.

6. The high strength roll according to claim 1, wherein the roll head has a circular cross-section and a keyway on the surface thereof.

7. The high-strength roll according to any one of claims 1 to 6, wherein the second roll portion is a composite ceramic material of zirconia and alumina.