A roller with wear-resistant surface

Abstract

This utility model relates to the field of rolling mill technology, specifically to a wear-resistant rolling mill roll, comprising a roll body, a fixing plate fixedly mounted on the outer surface of the roll body, a roll sleeve fitted on the roll body that abuts against the fixing plate, a first external thread on the end of the roll sleeve away from the fixing plate, and a second external thread on the end of the roll body away from the fixing plate; it also includes a cover body, comprising two interconnected roll covers and sleeve covers, a first internal thread adapted to the first external thread on the inner side of the sleeve cover, and a second internal thread adapted to the second external thread on the inner side of the roll cover, wherein the first and second external threads are identical. By fitting the roll sleeve onto the roll body, with the end of the roll sleeve abutting against the fixing plate, and then connecting the cover body to the roll body and the roll sleeve, the roll sleeve is connected to the roll body via the cover body, thereby avoiding the need for roll replacement due to long-term operation.

Description

Technical Field

[0001] The utility model relates to the technical field of rollers, in particular to a roller with wear-resistant surface. Background Art

[0002] Rollers are the main working parts and tools on the rolling mill that cause continuous plastic deformation of metal. Rollers are mainly composed of a roll body, a roll neck and a shaft head. The roll body is the middle part of the roll that actually participates in rolling the metal. It has a smooth cylindrical or grooved surface. The roll neck is installed in the bearing and transmits the rolling force to the frame through the bearing seat and the pressing device. The shaft head at the transmission end is connected to the gear seat through a connecting shaft, which transmits the rotational torque of the motor to the rolls. The rolls can be arranged in the form of two, three, four or more rolls in the rolling mill frame.

[0003] The working surface of the roller is easy to wear, and the whole roller needs to be replaced after wear. Therefore, a roller sleeve is installed on the outside of the roller to reduce costs. Generally, a clamping strip is added to the outside of the roller, and a clamping groove that matches the clamping strip is provided on the roller sleeve for connection. When this connection method is working, the roller drives the roller sleeve to rotate through the cooperation of the clamping strip and the clamping groove. Under long-term work, the working temperature of the clamping strip is high, the roller is easy to wear and the performance is reduced, and it still needs to be replaced. Utility Model Content

[0004] The utility model aims to provide a roller with a wear-resistant surface to solve the above-mentioned shortcomings in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A roller with a wear-resistant roller surface comprises a roller body, a fixing plate is fixedly provided on the outer surface of the roller body, a roller sleeve is sleeved on the roller body and abuts against the fixing plate, a first external thread is provided at one end of the roller sleeve away from the fixing plate, and a second external thread is provided at one end of the roller sleeve away from the fixing plate; and also comprises a cover body, the cover body comprises two roller covers and a sleeve cover connected to each other, a first internal thread matched with the first external thread is provided on the inner side of the sleeve cover, a second internal thread matched with the second external thread is provided on the inner side of the roller cover, and the first external thread and the second external thread are the same.

[0007] Furthermore, the roller cover abuts against the end of the shaft sleeve.

[0008] Furthermore, the outer diameter of the sleeve in the cover body is not greater than the outer diameter of the shaft sleeve.

[0009] Furthermore, the rotation direction of the cover body and the roller body when tightened is opposite to the movement direction of the roller body when working.

[0010] Furthermore, a groove is formed on the fixing plate, and a convex block matching the groove is fixedly connected to the end of the roller sleeve, and the convex block is inserted into the groove.

[0011] Furthermore, the shaft sleeve includes a connecting layer and a wear-resistant layer which are sequentially arranged from the inside to the outside, and the connecting layer and the wear-resistant layer are fixedly connected.

[0012] In the above technical solution, the utility model provides a roller surface wear-resistant roller with the beneficial effects of:

[0013] The roller sleeve is set up and put on the roller body so that the end of the roller sleeve abuts against the fixed plate, and then the cover body is connected to the roller body and the roller sleeve. The second external thread and the second internal thread are connected to connect the roller cover to the roller body, and the first external thread and the first internal thread are connected to connect the roller cover to the roller sleeve. That is, the roller sleeve is connected to the roller body through the cover body. Since the roller sleeve is mainly fixed to the roller body through the fixed plate at the end and the cover body, the problem of replacement of the roller due to long-term work is avoided.

[0014] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0015] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0018] Figure 2 Schematic diagram of the explosion structure provided by the embodiment of the utility model Figure 1 ;

[0019] Figure 3 Schematic diagram of the explosion structure provided by the embodiment of the utility model Figure 2 ;

[0020] Figure 4 A schematic diagram of the cover structure provided by an embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of a shaft sleeve provided in an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1. Roller body; 2. Fixed plate; 21. Groove; 3. Roller sleeve; 31. Connecting layer; 32. Wear-resistant layer; 33. Bump; 4. Cover body; 41. Roller cover; 42. Sleeve cover. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0025] See also Figure 1-5 A roller with a wear-resistant roller surface comprises a roller body 1, a fixing plate 2 is fixedly arranged on the outer surface of the roller body 1, a roller sleeve 3 abutting against the fixing plate 2 is sleeved on the roller body 1, a first external thread is arranged at one end of the roller sleeve 3 away from the fixing plate 2, a second external thread is arranged at one end of the roller sleeve 3 away from the fixing plate 2; and a cover body 4 is also included, the cover body 4 comprises two roller covers 41 and a sleeve cover 42 connected to each other, a first internal thread matched with the first external thread is arranged on the inner side of the sleeve cover 42, a second internal thread matched with the second external thread is arranged on the inner side of the roller cover 41, and the first external thread and the second external thread are the same.

[0026] By means of the roller sleeve 3, the roller sleeve 3 is sleeved on the roller body 1, so that the end of the roller sleeve 3 abuts against the fixed plate 2, and then the cover body 4 is connected to the roller body 1 and the roller sleeve 3, the second external thread and the second internal thread are connected to connect the roller cover 41 to the roller body 1, and the first external thread and the first internal thread are connected to connect the roller cover 41 to the roller sleeve 3, that is, the roller sleeve 3 is connected to the roller body 1 through the cover body 4, because the roller sleeve 3 is mainly fixed to the roller body 1 through the fixed plate 2 at the end and the cover body 4, the problem of replacement of the roller due to long-term work is avoided.

[0027] Furthermore, the roller cover 41 abuts against the end of the shaft sleeve, so that after the cover body 4 is installed, the roller cover 41 abuts against the end of the shaft sleeve, thereby strengthening the connection between the cover body 4 and the roller sleeve 3.

[0028] Furthermore, the outer diameter of the sleeve cover 42 in the cover body 4 is not greater than the outer diameter of the shaft sleeve, thereby avoiding the problem that the outer diameter of the sleeve cover 42 exceeds the outer diameter of the shaft sleeve, which is inconvenient for processing.

[0029] Furthermore, the rotation direction of the cover 4 and the roller body 1 is opposite to the movement direction of the roller body 1 during operation, so as to avoid the roller sleeve 3 being subjected to resistance in the opposite direction of movement during operation, causing the cover 4 to rotate and be disconnected from the roller body 1 and the roller sleeve 3.

[0030] Furthermore, a groove 21 is formed on the fixing plate 2, and a convex block 33 matching the groove 21 is fixedly connected to the end of the roller sleeve 3, and the convex block 33 is inserted into the groove 21. Through the design of the convex block 33 and the groove 21, the roller sleeve 3 will not rotate relative to the roller body 1, which reduces the wear of the end of the roller sleeve 3 and the fixing plate 2 and the cover body 4 on the one hand, and makes the roller body 1 drive the roller sleeve 3 to rotate synchronously on the other hand, thereby improving the processing effect.

[0031] Furthermore, the shaft sleeve comprises a connection layer 31 and a wear-resistant layer 32 which are arranged in sequence from the inside to the outside, and the connection layer 31 and the wear-resistant layer 32 are fixedly connected. The wear-resistant layer 32 is a 1Cr13 type martensitic stainless steel layer.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A roller having a wear-resistant roller surface, comprising a roller body (1), characterized in that: A fixing plate (2) is fixedly provided on the outer surface of the roller body (1), a roller sleeve (3) is sleeved on the roller body (1) and is in contact with the fixing plate (2), a first external thread is provided at one end of the roller sleeve (3) away from the fixing plate (2), and a second external thread is provided at one end of the roller body (1) away from the fixing plate (2); The cover body (4) further comprises a roller cover (41) and a sleeve cover (42) which are connected to each other. The sleeve cover (42) has a first internal thread matched with the first external thread on its inner side, and the roller cover (41) has a second internal thread matched with the second external thread on its inner side. The first external thread and the second external thread are identical.

2. A roller with a wear-resistant roller surface according to claim 1, characterized in that: The roller cover (41) abuts against the end of the shaft sleeve.

3. A roller with a wear-resistant roller surface according to claim 1, characterized in that: The outer diameter of the sleeve cover (42) in the cover body (4) is not greater than the outer diameter of the shaft sleeve.

4. A roller with a wear-resistant roller surface according to claim 1, characterized in that: The rotation direction of the cover body (4) and the roller body (1) when being tightened is opposite to the movement direction of the roller body (1) when working.

5. The wear-resistant roller according to claim 1, characterized in that: The fixing plate (2) is provided with a groove (21), and the end of the roller sleeve (3) is fixedly connected with a convex block (33) adapted to the groove (21), and the convex block (33) is inserted into the groove (21).

6. A roller with a wear-resistant roller surface according to claim 1, characterized in that: The roller sleeve comprises a connecting layer (31) and a wear-resistant layer (32) which are arranged in sequence from the inside to the outside, and the connecting layer (31) and the wear-resistant layer (32) are fixedly connected.

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