A V-shaped roller for conveying large-section hot-rolled rectangular steel

Abstract

The utility model discloses a V-shaped roller for conveying hot-rolled rectangular steel with large cross-section, comprising a roller wheel, the roller wheel comprising a roller surface, a turning groove bottom being arranged in the middle of the roller wheel, a transition arc being arranged between the turning groove bottom and the roller surface, and a protective layer being arranged on the transition arc. The V-shaped roller for conveying hot-rolled rectangular steel with large cross-section of the utility model has the advantages of simple and reliable structure, economical and durable, and stable conveying.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel rolling, and specifically relates to a V-shaped roller for conveying hot-rolled rectangular steel with a large cross section. Background Art

[0002] At present, most of the domestic large-scale simple section steel (round steel, rectangular steel, etc.) production lines use V-shaped rollers for conveyor rollers. Due to the strip fluctuations of the rolled material and its own weight, it is easy to cause surface quality defects such as periodic indentations and scratches at the corners of the rolled material. In addition, as the production line rolls out more new specifications of rolled materials, higher requirements are placed on the wear resistance, impact resistance, and economy of the V-shaped rollers. The existing measures are mainly to reduce the transportation speed or replace it with a transport roller of other geometric shapes, but the above measures reduce the production rhythm, consume more procurement funds, and even increase additional maintenance costs.

[0003] The utility model patent with announcement number CN217457372U was published on September 20, 2022. It is named as a V-shaped roller device for conveying steel pipes. The device includes multiple V-shaped roller units arranged along the conveying direction. The distance between two adjacent V-shaped roller units is less than the length of the steel pipe. The V-shaped roller unit includes a fixed frame. A V-shaped roller is rotatably installed on one side of the fixed frame. A reduction motor that drives the V-shaped roller to rotate is fixedly installed on the other side of the fixed frame. The V-shaped roller adopts a hollow reinforced structure. The device has a complex structure and cannot improve the stability of rolled material conveying. Utility Model Content

[0004] The utility model aims to provide a V-shaped roller for conveying large-section hot-rolled rectangular steel with simple and reliable structure, economical and durable, and stable conveying, in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The V-shaped roller for conveying large-section hot-rolled rectangular steel comprises a roller wheel, wherein the roller wheel comprises a roller surface, a turning groove bottom is arranged in the middle of the roller wheel, a transition arc is arranged between the turning groove bottom and the roller surface, and a protective layer is arranged on the transition arc.

[0007] The roller surface is in an arc-shaped structure.

[0008] The turning groove bottom is a rectangular structure.

[0009] The protective layer is a cladding layer.

[0010] Mounting grooves are arranged on both sides of the roller, and the mounting grooves are arranged in pairs.

[0011] The end of the installation groove is an arc-shaped structure, and one side of the installation groove is an inclined structure.

[0012] The roller has a symmetrical structure, the middle section of the roller is a V-shaped structure, and the sections at both ends of the roller are planar structures.

[0013] A rectangular steel is arranged on the roller surface, the side of the rectangular steel contacts the roller surface, and the end of the rectangular steel is located in the bottom of the turning groove.

[0014] The technical effect of the utility model is as follows: the V-shaped roller used for conveying large-section hot-rolled rectangular steel of the utility model improves the surface quality of the roller surface by designing an arc-shaped roller surface structure and adopting a protective layer made of surfacing welding, improves the wear resistance and impact resistance of the roller, and eliminates the defects such as indentations, scratches, and pits on the surface quality of rectangular steel caused by the existing roller design; and increases the fluctuation space of the rolled material strip by designing the turning groove bottom, avoids the axial movement of the roller and assembly failure, and improves the stability of the rolled material conveying. The V-shaped roller has a simple and reliable structure, is economical and durable, has a low maintenance cost, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] This specification includes the following drawings, which show the following contents:

[0016] Figure 1 It is a working schematic diagram of the V-shaped roller used for conveying large-section hot-rolled rectangular steel of the utility model;

[0017] Figure 2 The utility model is a schematic cross-sectional view of a V-shaped roller for conveying hot-rolled rectangular steel with a large cross section.

[0018] The markings in the figure are: 1. roller; 2. roller surface; 3. turning groove bottom; 4. transition arc; 5. protective layer; 6. mounting groove; 7. rectangular steel. DETAILED DESCRIPTION

[0019] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0020] like Figure 1 and Figure 2As shown, the V-shaped roller for conveying large-section hot-rolled rectangular steel comprises a roller 1, the roller 1 comprises a roller surface 2, a turning groove bottom 3 is provided in the middle of the roller 1, a transition arc 4 is provided between the turning groove bottom 3 and the roller surface 2, and a protective layer 5 is provided on the transition arc 4. In order to solve the surface quality defects such as periodic indentations and scratches at the corners of the large-section hot-rolled rectangular steel 7 that are easily generated during the conveying process, the transition edges and corners of the original V-shaped roller 1 are polished, and the wear-resistant welding wire is used for surfacing welding and then fine-machined into the shape of the transition arc 4. At the same time, a protective welding layer is added to the easily worn area, the geometric shape is optimized, and the wear resistance, impact resistance and economy of the roller 1 are improved. It can improve the surface quality of the rolled material, and the turning groove bottom 3 can avoid axial movement and assembly failure of the roller 1.

[0021] like Figure 1 and Figure 2 As shown, the roller surface 2 is an arc-shaped structure. The arc-shaped roller surface 2 has a certain angle, and its end face angle is greater than 90 degrees, which reduces the contact area between the hot oxidized iron scale on the surface of the large-sized hot-rolled rectangular steel 7 and the V-shaped groove, and reduces the quality defects such as pits on the steel surface caused by the hot oxidized iron scale adhering to the V-shaped groove.

[0022] like Figure 1 and Figure 2 As shown, the turning groove bottom 3 is a rectangular structure. The rectangular structure of the turning groove bottom 3 expands the accommodation space of the end of the rectangular steel 7, increases the fluctuation space of the rolled material strip, and prevents the end of the rectangular steel 7 from directly contacting the roller 1, that is, increases the conveying movement margin between the corner of the hot-rolled rectangular steel 7 and the bottom of the V-shaped groove, reduces the axial movement and assembly failure of the V-shaped roller 1 caused by the weight and strip fluctuation of the large-sized hot-rolled rectangular steel 7, and is conducive to improving the stability of the rolled material conveying.

[0023] The protective layer 5 is a surfacing layer. The roller surface 2 and the turning groove bottom 3 are connected through the arc of the protective layer 5. The surfacing layer is surfacing with wear-resistant welding wire and then fine-turned, which can reduce the quality defects such as scratches on the corners of the steel caused by weight and strip fluctuations of large-sized hot-rolled rectangular steel 7, and has good wear resistance and economy. The surfacing process can be used to surfacing and repair the easily worn area of ​​the roller surface 2, so that the roller surface 2 obtains a more wear-resistant alloy layer with high bonding strength, improves its impact resistance and wear resistance, greatly extends the service life of the roller surface 2, extends the maintenance cycle, and reduces maintenance costs. In addition, the surfacing process is highly operable and can quickly process the existing damaged roller surface 2. The surfacing layer of the transition arc 4 can be surfacing with wear-resistant welding wire HS113G, the surfacing layer thickness is >4mm, and the surface roughness after fine turning is Ra<3.2. The main chemical composition of HS113G (GB / T 14957-1994) is C3.2~3.55; Mn≤1.0; Si0.5~1.1; Cr24~28; W12~16; Fe≤2.5; Co balance.

[0024] like Figure 1 and Figure 2As shown, mounting grooves 6 are provided on both sides of the roller 1, and the mounting grooves 6 are arranged in pairs. The mounting grooves 6 cooperate with the roller shaft to realize the rotation of the roller 1. The mounting grooves 6 can be used to conveniently install the roller 1 on the roller, reduce the width of the roller, and reduce the production line space. The mounting grooves 6 are arranged in pairs to improve the stability of the position after installation.

[0025] like Figure 2 As shown, the end of the mounting groove 6 is an arc-shaped structure, and one side of the mounting groove 6 is an inclined structure. The end of the mounting groove 6 is designed as an arc-shaped structure to avoid excessive stress at the end of the mounting groove 6 and prevent deformation of the roller 1. One side of the inclined structure of the mounting groove 6 corresponds to the roller surface 2 of the V-shaped roller, so that the thickness between the roller surface 2 and the mounting groove 6 is nearly consistent, ensuring that the loads of various parts of the roller surface 2 are nearly the same when the roller 1 is pressed, thereby ensuring that no local damage occurs.

[0026] like Figure 1 and Figure 2 As shown, the roller 1 is a symmetrical structure, the middle section of the roller 1 is a V-shaped structure, and the sections at both ends of the roller 1 are flat structures. The outer periphery of the roller 1 is an annular V-shaped groove, and the annular V-shaped groove area is composed of an arc-shaped roller surface 2, a cladding layer and a turning groove bottom 3. The two ends of the roller 1 are columnar structures, and the probability of the ends of the roller 1 contacting the rolled material is smaller, so the roller 1 with this structure can convey rolled materials of larger sizes.

[0027] like Figure 1 As shown, a rectangular steel 7 is provided on the roller surface 2, the side of the rectangular steel 7 contacts the roller surface 2, and the end of the rectangular steel 7 is located in the turning groove bottom 3. When the roller 1 conveys the rectangular steel 7, the end of the rectangular steel 7 is located in the turning groove bottom 3, and the two do not contact each other. The weight of the rectangular steel 7 is borne by the roller surface 2, thereby reducing the axial movement of the rectangular steel 7 during conveyance and reducing the problem of assembly failure of the roller.

[0028] The V-shaped roller used for conveying large-section hot-rolled rectangular steel improves the surface quality of the roller surface 2 by designing an arc-shaped roller surface 2 structure and a protective layer 5 made of surfacing welding, improves the wear resistance and impact resistance of the roller wheel 1, and eliminates the defects such as indentations, scratches, and pits on the surface quality of the rectangular steel 7 caused by the existing roller wheel 1 design; and increases the fluctuation space of the rolled material strip by designing a turning groove bottom 3, avoids axial movement and assembly failure of the roller wheel 1, and improves the stability of the rolled material conveying. The V-shaped roller has a simple and reliable structure, is economical and durable, has a low maintenance cost, and has good practicality.

[0029] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A V-shaped roller for conveying large-section hot-rolled rectangular steel, characterized in that: The invention comprises a roller (1), wherein the roller (1) comprises a roller surface (2), a turning groove bottom (3) is provided in the middle of the roller (1), a transition arc (4) is provided between the turning groove bottom (3) and the roller surface (2), and a protective layer (5) is provided on the transition arc (4).

2. The V-shaped roller for conveying large-section hot-rolled rectangular steel according to claim 1, characterized in that: The roller surface (2) is in an arc-shaped structure.

3. The V-shaped roller for conveying large-section hot-rolled rectangular steel according to claim 2, characterized in that: The turning groove bottom (3) is a rectangular structure.

4. The V-shaped roller for conveying large-section hot-rolled rectangular steel according to any one of claims 1 to 3, characterized in that: The protective layer (5) is a cladding layer.

5. The V-shaped roller for conveying large-section hot-rolled rectangular steel according to claim 4, characterized in that: Mounting grooves (6) are provided on both sides of the roller (1), and the mounting grooves (6) are arranged in pairs.

6. The V-shaped roller for conveying hot-rolled rectangular steel with large cross-section according to claim 5, characterized in that: The end of the installation groove (6) is an arc-shaped structure, and one side of the installation groove (6) is an inclined structure.

7. The V-shaped roller for conveying hot-rolled rectangular steel with large cross-section according to claim 6, characterized in that: The roller (1) has a symmetrical structure; the middle section of the roller (1) is a V-shaped structure, and the sections at both ends of the roller (1) are planar structures.

8. The V-shaped roller for conveying large-section hot-rolled rectangular steel according to claim 1, characterized in that: A rectangular steel (7) is provided on the roller surface (2), the side of the rectangular steel (7) is in contact with the roller surface (2), and the end of the rectangular steel (7) is located in the turning groove bottom (3).

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