High-hardness heat-crack-resistant roller

Abstract

The utility model belongs to the technical field of rollers, and discloses a high-hardness heat-crack-resistant roller which comprises a roller body, roller necks are installed on the two sides of the roller body, and center shaft rods are installed on the two sides of each roller neck. A conveying wheel is installed on the outer surface of the roller neck, the diameter of the outer surface of the conveying wheel is larger than that of the outer surface of the roller body, the roller body, the roller neck and the center shaft rod are designed through an integrated forming technology and are all made of high-hardness alloy steel materials, and a protective cover is detachably installed on the outer surface of the center shaft rod. The protective cover is provided with a sleeving cavity corresponding to the outer surface of the center shaft rod, the sleeving cavity is matched with the center shaft rod, a positioning groove corresponding to the outer surface of the roller neck is formed in the center of the conveying wheel, the positioning groove is matched with the outer surface of the roller neck, and a plurality of integrally-formed positioning protrusions are arranged on the outer surface of the roller neck. According to the utility model, the rollers can be transported and moved conveniently, and roller bodies can be prevented from being worn in the transportation process.

Description

Technical Field

[0001] This utility model relates to the field of rolling mill technology, and in particular to a high-hardness, heat-crack-resistant rolling mill roll. Background Technology

[0002] High-hardness, heat-crack resistant rolls are a type of roll used for hot-rolled steel. They are made of high-hardness alloy steel and are characterized by maintaining high hardness and sufficient strength at high temperatures and being less prone to hot cracking. They also provide superior performance for hot rolling production, improving production efficiency and reducing production costs, making them a high-quality roll material.

[0003] Currently, high-hardness heat-crack resistant rolls are widely used in various hot rolling production lines, such as flat rolling mills and hot continuous rolling mills. However, in practical applications, the inventors have found that existing rolls are relatively large, making them inconvenient to transport and move, and they are prone to wear during transportation. Therefore, we have proposed a high-hardness heat-crack resistant roll. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide a high-hardness, heat-crack-resistant roll to solve the technical problem that the current rolls are relatively large, inconvenient to transport and move, and prone to wear during transportation.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A high-hardness, heat-crack-resistant roll includes a roll body, roll necks are mounted on both sides of the roll body, and a central shaft is mounted on both sides of the roll necks.

[0008] A conveyor wheel is mounted on the outer surface of the roller neck, and the outer surface diameter of the conveyor wheel is larger than the outer surface diameter of the roller body.

[0009] As an improved technical solution, the roller body, roller neck, and central shaft are designed using an integral molding process, and all three components are made of high-hardness alloy steel.

[0010] As an improved technical solution, a protective cover is detachably installed on the outer surface of the central shaft. The protective cover has a sleeve cavity corresponding to the outer surface of the central shaft, and the sleeve cavity is adapted to the central shaft.

[0011] As an improved technical solution, a positioning groove corresponding to the outer surface of the roller neck is formed inside the center of the conveying wheel, and the positioning groove is adapted to the outer surface of the roller neck.

[0012] As an improved technical solution, the outer surface of the roller neck has multiple integrally formed positioning protrusions, and the multiple positioning protrusions are arranged at equal intervals along the axial direction of the roller neck;

[0013] The inner cavity of the positioning groove is provided with positioning slots that correspond to the positioning protrusions respectively, and the positioning slots are adapted to the positioning protrusions.

[0014] As an improved technical solution, the outer surface of the conveyor wheel is provided with an annular groove, and several reinforcing ribs are fixedly installed on both sides of the inner cavity of the annular groove.

[0015] Several of the reinforcing ribs are arranged at equal intervals along the axial direction of the conveyor wheel.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are:

[0017] 1. This utility model involves assembling a conveyor wheel onto a roller neck, with a positioning groove fitted onto the outer surface of the roller neck and a positioning slot engaged with a positioning protrusion. A thrust is then applied to the conveyor wheel, causing it to drive the roller body to roll, facilitating the transport and movement of the roller. During this process, because the outer diameter of the conveyor wheel is larger than the outer diameter of the roller body, the roller body will not be worn during transport, thus avoiding wear and tear on the roller body. This facilitates the transport and movement of the roller and prevents wear and tear on the roller body during transport.

[0018] 2. This utility model uses high-hardness alloy steel to make rolls. The main characteristics of high-hardness alloy steel are that it can maintain high hardness and sufficient strength in high-temperature environments and is not prone to thermal cracking. This makes the rolls have excellent high-temperature strength and hardness, while maintaining stable rolling performance, thus possessing high-temperature strength, high hardness and resistance to thermal cracking. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of the high-hardness, heat-crack-resistant rolling mill roll of this utility model.

[0021] Figure 2This is a schematic diagram of the connection structure between the roll and the protective cover in the overall high-hardness, heat-crack-resistant roll of this utility model.

[0022] Figure 3 This is a schematic diagram of the conveyor wheel structure in the overall high-hardness, heat-crack-resistant roll of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] In the figure: 11. Roller body; 12. Roller neck; 1201. Positioning protrusion; 13. Central shaft; 14. Protective cover; 15. Conveyor wheel; 1501. Positioning groove; 1502. Positioning slot; 1503. Annular groove; 1504. Reinforcing rib. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0028] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0029] Reference Figure 1-3 A high-hardness heat-crack resistant roll is provided. The high-hardness heat-crack resistant roll includes a roll body 11, roll necks 12 are installed on both sides of the roll body 11, and central shafts 13 are installed on both sides of the roll necks 12.

[0030] A conveyor wheel 15 is installed on the outer surface of the roll neck 12. The outer surface diameter of the conveyor wheel 15 is larger than the outer surface diameter of the roll body 11, so as to facilitate the transport and movement of the roll and prevent the roll body 11 from being worn during transport.

[0031] Reference Figure 1 and Figure 2 The roll body 11, roll neck 12, and central shaft 13 are designed using an integral molding process. The roll body 11, roll neck 12, and central shaft 13 are all made of high-hardness alloy steel. In application, the rolls are made of high-hardness alloy steel. The main characteristics of high-hardness alloy steel are that it can maintain high hardness and sufficient strength in high-temperature environments and is not prone to thermal cracking. This makes the rolls have excellent high-temperature strength and hardness, while maintaining stable rolling performance, thus possessing high-temperature strength, high hardness, and resistance to thermal cracking.

[0032] Reference Figure 1 and Figure 2 A protective cover 14 is detachably installed on the outer surface of the central shaft 13. The protective cover 14 has a sleeve cavity corresponding to the outer surface of the central shaft 13, and the sleeve cavity is adapted to the central shaft 13 so as to protect the central shaft 13.

[0033] Reference Figure 1 and Figure 3 The center of the conveying wheel 15 has a positioning groove 1501 that corresponds to the outer surface of the roller neck 12, and the positioning groove 1501 is adapted to the outer surface of the roller neck 12 so that the conveying wheel 15 can be sleeved on the roller neck 12.

[0034] Reference Figure 1 and Figure 3 The outer surface of the roller neck 12 has multiple integrally formed positioning protrusions 1201, which are arranged at equal intervals along the axial direction of the roller neck 12.

[0035] The inner cavity of the positioning groove 1501 is provided with positioning slots 1502 that correspond to the positioning protrusions 1201 respectively, and the positioning slots 1502 are adapted to the positioning protrusions 1201 so that the conveying wheel 15 can be sleeved and positioned on the roller neck 12.

[0036] Reference Figure 1 and Figure 3 The outer surface of the conveyor wheel 15 is provided with an annular groove 1503, and several reinforcing ribs 1504 are fixedly installed on both sides of the inner cavity of the annular groove 1503.

[0037] Several reinforcing ribs 1504 are arranged at equal intervals along the axial direction of the conveyor wheel 15 to improve the support strength of the conveyor wheel 15.

[0038] In actual use, by assembling the conveyor wheel 15 onto the roller neck 12, the positioning groove 1501 is sleeved on the outer surface of the roller neck 12, and the positioning slot 1502 is engaged with the positioning protrusion 1201. Then, a thrust is applied to the conveyor wheel 15, which drives the roller body 11 to roll, making the roll easy to transport and move. During this period, because the outer surface diameter of the conveyor wheel 15 is larger than the outer surface diameter of the roller body 11, the roller body 11 will not be worn during the transport process, thus avoiding the phenomenon of wear on the roller body 11. This facilitates the transport and movement of the roll and prevents wear on the roller body 11 during transport. This device not only facilitates the transport and movement of the roll but also prevents wear on the roller body 11 during transport.

[0039] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A high-hardness, heat-crack-resistant roll, characterized in that: It includes a roller body (11), roller necks (12) are installed on both sides of the roller body (11), and a central shaft (13) is installed on both sides of the roller necks (12). A conveyor wheel (15) is mounted on the outer surface of the roller neck (12), and the outer surface diameter of the conveyor wheel (15) is larger than the outer surface diameter of the roller body (11).

2. The high-hardness, heat-crack-resistant roll according to claim 1, characterized in that: The roller body (11), roller neck (12) and central shaft (13) are designed using an integral molding process, and the roller body (11), roller neck (12) and central shaft (13) are all made of high-hardness alloy steel.

3. The high-hardness, heat-crack-resistant roll according to claim 1, characterized in that: A protective cover (14) is detachably installed on the outer surface of the central shaft (13). The protective cover (14) has a sleeve cavity corresponding to the outer surface of the central shaft (13), and the sleeve cavity is adapted to the central shaft (13).

4. The high-hardness, heat-crack-resistant roll according to claim 1, characterized in that: The center of the conveying wheel (15) is provided with a positioning groove (1501) corresponding to the outer surface of the roller neck (12), and the positioning groove (1501) is adapted to the outer surface of the roller neck (12).

5. The high-hardness, heat-crack-resistant roll according to claim 4, characterized in that: The outer surface of the roller neck (12) has a plurality of integrally formed positioning protrusions (1201), and the plurality of positioning protrusions (1201) are arranged at equal intervals along the axial direction of the roller neck (12). The inner cavity of the positioning groove (1501) is provided with positioning slots (1502) that correspond to the positioning protrusion (1201) respectively, and the positioning slots (1502) are adapted to the positioning protrusion (1201).

6. The high-hardness, heat-crack-resistant roll according to claim 1, characterized in that: The outer surface of the conveyor wheel (15) is provided with an annular groove (1503), and several reinforcing ribs (1504) are fixedly installed on both sides of the inner cavity of the annular groove (1503). Several of the reinforcing ribs (1504) are arranged at equal intervals along the axial direction of the conveyor wheel (15).

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