High-strength roller

Abstract

The utility model discloses a high-strength roller which adopts a structure that a roller body and more than three strip-shaped rolling blocks are uniformly distributed around the outer circumference of the roller body, and a fixing ring connects the rolling blocks to the roller body through a transversely arranged bolt, so that the problem that the bolt is bent due to the bending force of the spinning force of the roller on the bolt in the prior art is solved; a plurality of bulges are further arranged on the outer circumference of the roller body, and every two adjacent bulges clamp the corresponding rolling block, so that the stress strength is improved; the rolling block is made of wear-resistant steel, so that the rolling block has the characteristics of high strength, good wear resistance and the like.

Description

Technical Field

[0001] The utility model relates to a high-strength roll, belonging to the technical field of roll equipment. Background Art

[0002] The main working parts and tools for continuous plastic deformation of metals on a rolling mill. The roll mainly consists of three parts: the roll body, the roll neck, and the shaft head. The roll body is the middle part of the roll that actually participates in rolling metals, and it has a smooth cylindrical or grooved surface. The roll neck is installed in the bearing, and through the bearing seat and the screw-down device, the rolling force is transmitted to the rolling mill stand. The drive-end shaft head is connected to the gear block through a coupling shaft to transmit the rotational torque of the motor to the roll.

[0003] After retrieval, the application number 2020206111808 discloses a high-strength roll, including a roll body, a roll neck, and a roll head. The roll body includes a first roll part and a second roll part. 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 cemented carbide material, and the second roll part is made of ceramic material. Combining with the attached Figure 1 It can be seen that the first roll part is integrally cylindrical, with a groove provided in the middle thereof. The second roll part is semicircular, and two second roll parts are nested in the groove. At least three matching threaded holes are provided on the second roll part, and the locking bolts fix the second roll part on the first roll part through the threaded holes.

[0004] This solution has the following deficiencies:

[0005] As is well known, the roll rotates around its axis. It can be seen from the figure that the axis of the locking bolt is perpendicular to the axis of the roll. Since the working force of the roll is large, that is to say, the rolling pressure of the roll will cause bending of the locking bolt, resulting in bending deformation or even fracture of the locking bolt, which brings inconvenience to subsequent maintenance. Utility Model Content

[0006] The purpose of the utility model is to provide a high-strength roll to solve the above problems.

[0007] The technical solution adopted by the utility model is: a high-strength roll, including a shaft body, the shaft body includes a main body and shaft heads on both sides. A plurality of protrusions are evenly distributed on the outer circumferential surface of the main body, and the protrusions extend along the axis direction of the main body. A roll pressing block is clamped between two adjacent protrusions;

[0008] Roll pressing block, there are a plurality of roll pressing blocks and the outer shape is strip-shaped. The roll pressing block is made of wear-resistant steel material. The roll pressing block includes a top surface and a bottom surface. The top surface is a convex arc, and the bottom surface is a concave arc. The bottom surface fits on the outer circumferential surface of the main body. The top surfaces of a plurality of roll pressing blocks form a complete circular surface;

[0009] There are two fixed rings, which are respectively arranged at both ends of the main body. Bolts penetrate the fixed rings horizontally and are connected to the end faces on both sides of the roller pressing block. Threaded holes for connecting the bolts are respectively arranged on the end faces on both sides of the roller pressing block.

[0010] Specifically, the lower half of the roller pressing block is closely attached to the two side faces of the space between two adjacent protrusions.

[0011] Specifically, the fixed ring includes a disk body, and a through hole is arranged at the center of the disk body for the shaft head to pass through;

[0012] On the disk surface of the disk body near the main body side, a plurality of clamping blocks evenly distributed around its center are provided, and the clamping blocks are respectively clamped in the space between two adjacent protrusions.

[0013] Specifically, the joint surface of the clamping block and the main body is a concave surface.

[0014] Optionally, the number of the roller pressing blocks is between 3 and 6.

[0015] Beneficial effects:

[0016] The beneficial effects of the present utility model are as follows: The rolling mill of the present utility model adopts a structure of a roll body and more than 3 long strip-shaped roller pressing blocks evenly distributed around the outer circumference of the roll body, and the fixed ring connects the roller pressing blocks to the roll body through horizontally arranged bolts, avoiding the problem of bolt bending caused by the bending force of the rolling pressure on the bolts in the traditional technology;

[0017] A plurality of protrusions are also arranged on the outer circumference of the roll body, and two adjacent protrusions clamp the roller pressing blocks, improving the stress intensity;

[0018] The roller pressing block is processed from wear-resistant steel material, improving the strength and wear resistance, etc. Description of the drawings

[0019] Figure 1-2 It is a structural schematic diagram of the present utility model;

[0020] Figure 3-4 It is a shaft body structure diagram of the present utility model;

[0021] Figure 5-6 It is a roller pressing block structure diagram of the present utility model;

[0022] Figure 7 It is a fixed ring structure diagram of the present utility model;

[0023] Among them:

[0024] 1 - Shaft body;

[0025] 2 - Roller pressing block;

[0026] 3 - Fixed ring;

[0027] 4 - Bolt;

[0028] 1a - Main body, 1b - Shaft head, 1c - Protrusion;

[0029] 2a - Top surface, 2b - Bottom surface, 2c - Threaded hole;

[0030] 3a - Disc body, 3b - Through hole, 3c - Clamping block, 3ca - Fitting surface. Detailed implementation mode

[0031] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the attached drawings and preferred embodiments, details the specific implementation mode, structure, features and their effects of the present utility model as follows.

[0032] Please refer to Figures 1 to 6 , a high-strength roll, including a roll body 1, the roll body 1 includes a main body 1a and shaft heads 1b on both sides. Five protrusions 1c are evenly distributed on the outer circumferential surface of the main body 1a, and the protrusions 1c extend along the axis direction of the main body 1a. One roll pressing block 2 is clamped between two adjacent protrusions 1c;

[0033] There are 5 roll pressing blocks 2, and the shape is long strip. The number can be selected from 3 to 6. The roll pressing blocks 2 are made of wear-resistant steel material with the grade of Mn13Cr2 的 to improve strength and wear resistance. The roll pressing block 2 includes a top surface 2a and a bottom surface 2b. The top surface 2a is an outwardly convex arc for roll pressing. The bottom surface 2b is an inwardly concave arc, and the bottom surface 2b fits on the outer circumferential surface of the main body 1a. The top surfaces 2a of the 5 roll pressing blocks 2 form a complete circular surface;

[0034] Two fixed rings 3 are respectively arranged at both ends of the main body 1a. Bolts 4 penetrate the fixed rings 3 horizontally and are connected to the end faces on both sides of the roll pressing block 2. Threaded holes 2c for connecting the bolts 4 are respectively arranged on the end faces on both sides of the roll pressing block 2.

[0035] This roll adopts a structure in which the roll body and more than 3 long strip-shaped roll pressing blocks 2 are evenly distributed around the outer circumference of the roll body 1, and the fixed ring 3 connects the roll pressing block 2 to the roll body through the horizontally arranged bolts 4, avoiding the problem of bolt bending caused by the bending force of the roll rotation pressure in the traditional technology.

[0036] At the same time, five protrusions 1c are also arranged on the outer circumference of the roll body 1, and two adjacent protrusions 1c clamp the roll pressing block 2, improving the stress intensity of the roll pressing block during the roll pressing process.

[0037] In order to improve the bearing strength and avoid shaking, the lower half of the roller pressing block 2 is closely attached to both side surfaces of the space between two adjacent protrusions 1c.

[0038] Please refer to Figure 7 , the fixing ring 3 includes a disc body 3a, a through hole 3b is provided at the center of the disc body 3a, and the shaft head 1b passes through the through hole 3b;

[0039] On the disc surface of the disc body 3a near the main body 1a, a plurality of clamping blocks 3c are evenly distributed around its center, and the clamping blocks 3c are respectively clamped in the space between two adjacent protrusions 1c.

[0040] In order to form an integral body between the clamping block 3ca and the main body 1a, the joint surface 3ca between the clamping block 3ca and the main body 1a is a concave surface.

[0041] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A high-strength roller, characterized in that: It comprises an axle body, the axle body comprises a main body and axle heads on both sides, a plurality of protrusions are evenly distributed on the outer circumferential surface of the main body, the protrusions extend along the axial direction of the main body, and a roller block is clamped between two adjacent protrusions; A roller block, wherein the roller block is provided in plurality and has an elongated shape, the roller block is made of wear-resistant steel material, the roller block comprises a top surface and a bottom surface, the top surface is an outwardly convex arc, the bottom surface is an inwardly concave arc, the bottom surface is attached to the outer circumferential surface of the main body, and the top surfaces of the plurality of roller blocks form a complete circular surface; There are two fixing rings, which are respectively arranged at the two ends of the main body. Bolts penetrate the fixing rings transversely and are connected to the end faces on both sides of the roller block. The end faces on both sides of the roller block are respectively provided with threaded holes for connecting the bolts.

2. A high-strength roller according to claim 1, characterized in that: The lower half of the roller block is tightly attached to the two side surfaces of the space between two adjacent protrusions.

3. A high-strength roller according to claim 2, characterized in that: The fixing ring comprises a disc body, a through hole is provided at the center of the disc body, and the shaft head passes through the through hole; A plurality of clamping blocks evenly distributed around the center of the disk body are arranged on the disk surface near the main body, and the clamping blocks are clamped in the space between two adjacent protrusions one by one.

4. A high-strength roller according to claim 3, characterized in that: The fitting surface between the block and the main body is an inner concave surface.

5. A high-strength roller according to claim 4, characterized in that: The number of the roller blocks is between 3 and 6.

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