A device for conveying and transferring high-temperature threaded steel to a cooling bed in steel rolling production

Abstract

The invention discloses a device for conveying and transferring high-temperature threaded steel to a cooling bed in steel rolling production. The device is composed of a plurality of conveying units arranged in sequence. The conveying units are used to convey the high-temperature threaded steel to a straightening plate of the cooling bed for cooling and straightening. Each conveying unit comprises: an input motor, an input roller is installed at an output end of which, the input roller carries the high-temperature threaded steel, the input roller is used to transport the high-temperature threaded steel, the input roller is tilted downward from the input motor to the input roller to form an initial inclined surface, a brake member, the top of which is an inclined surface to become a braking inclined surface, the braking inclined surface is parallel to the initial inclined surface, the brake member is used to move upward or downward, so that the high-temperature threaded steel rolls onto the braking inclined surface along the slope of the initial inclined surface, and the high-temperature threaded steel located on the input roller is conveyed to the straightening plate of the cooling bed; the invention can unload the high-temperature threaded steel onto the cooling bed by rolling, with little damage to the high-temperature threaded steel, high pass rate, and improved production efficiency.

Description

Technical Field

[0001] The invention belongs to the field of steel rolling production, and in particular relates to a device for conveying and transferring high-temperature threaded steel to a cooling bed during steel rolling production. Background Art

[0002] Steel rolling is the process of changing the shape of steel ingots and billets between rotating rollers. The purpose of steel rolling is the same as other pressure processing. On the one hand, it is to obtain the required shape, such as steel plates, strip steel, wire rods and various steel sections; on the other hand, it is to improve the internal quality of steel. Common automobile plates, bridge steel, boiler steel, pipeline steel, rebar, rebar, electrical silicon steel, galvanized sheet, tin plate, including train wheels are all processed through steel rolling.

[0003] Steel rolling methods can be divided into hot rolling and cold rolling according to the rolling temperature; they can be divided into longitudinal rolling, transverse rolling and oblique rolling according to the relative motion relationship between the rolled piece and the roller during rolling; they can also be divided into general rolling and special rolling according to the forming characteristics of the rolled product. Cycle rolling, spinning rolling, bending forming, etc. are all special rolling methods.

[0004] Rebar is the common name for hot-rolled ribbed steel bars. The grade of ordinary hot-rolled steel bars is composed of HRB and the minimum yield point of the grade. In steel rolling production, high-temperature rebar needs to be rolled and then transported to the cooling bed for natural or artificial cooling. However, the temperature of the high-temperature rebar is 880-920℃ at this time, and the working environment is harsh. The performance of the equipment for transporting it must be high. In the existing technology, rollers are used to transport it, but when it is transported to the vicinity of the cooling bed, it is unloaded on the cooling bed by natural falling, which is easy to damage the rebar and affect the qualified rate. Summary of the invention

[0005] The purpose of the present invention is to provide a device for conveying and transferring high-temperature threaded steel to a cooling bed in steel rolling production, so as to solve the problem that the threaded steel is easily damaged and the qualified rate is affected when it is unloaded on the cooling bed by natural falling when transported to the vicinity of the cooling bed.

[0006] The present invention adopts the following technical scheme: a device for conveying and transferring high-temperature threaded steel to a cooling bed in steel rolling production, which is composed of a plurality of conveying units arranged in sequence, and the conveying unit is used to convey the high-temperature threaded steel to the straightening plate of the cooling bed for cooling and straightening.

[0007] Each conveying unit includes:

[0008] The input motor has an input roller installed at its output end. The input roller carries high-temperature threaded steel. The input roller is used to transport the high-temperature threaded steel. The input roller is tilted downward from the input motor to the input roller to form an initial slope.

[0009] The braking part has a slope at the top which becomes a braking slope. The braking slope is parallel to the initial slope. The braking part is used to move upward or downward so that the braking slope and the initial slope are in the same plane. Then the high-temperature threaded steel rolls onto the braking slope along the slope of the initial slope, and the high-temperature threaded steel on the input roller is transported to the straightening plate of the cooling bed.

[0010] Furthermore, the brake member comprises:

[0011] The brake top plate is tilted, and its upper plate surface is the brake slope.

[0012] The support column is located below the brake top plate, and its upper end is fixedly connected to the brake top plate.

[0013] The movable oil cylinder is located below the support column, and its piston end is fixedly connected to the support column. It is used to drive the support column and the brake top plate to move up and down. When the movable oil cylinder moves downward, the initial inclined surface and the braking inclined surface are in the same plane, ensuring that the high-temperature threaded steel transported to the predetermined position rolls from the initial inclined surface to the braking inclined surface; when the movable oil cylinder moves upward, the braking inclined surface is higher than the initial inclined surface, and the braking inclined surface and the receiving plate of the cooling bed straightening plate are in the same plane, so that the high-temperature threaded steel rolls from the braking inclined surface to the cooling bed straightening plate.

[0014] Furthermore, the support column is a cuboid or a cube with an inclined top surface, the top surface of the support column has the same inclination angle as the brake top plate, the top surface of the support column is adapted to the size and shape of the brake top plate, and the gap between the side of the support column close to the input roller and the input roller is smaller than the diameter of any high-temperature threaded steel bar.

[0015] Furthermore, a side surface of the support column close to the input roller is a first sliding surface, and a plurality of first support rods are fixedly connected along two vertical edges of the first sliding surface, and the direction of each first support rod is perpendicular to the first sliding surface, and one end of each first support rod is fixedly connected to the support column;

[0016] A first sliding roller is also provided parallel to the first sliding surface. The first sliding roller is horizontally arranged, and its two ends are respectively fixedly connected to the other ends of the two first support rods arranged opposite to each other. A first roller is installed on the first sliding roller. The first roller is used to brake the top plate to move upward, so that the high-temperature threaded steel on the input roller slides along the first sliding surface, reducing the damage of the high-temperature threaded steel to the support column and transporting the high-temperature threaded steel.

[0017] Furthermore, a rolling vertical plate is arranged on one side of the cooling bed straightening plate close to the support column, and a second sliding surface is arranged on one side of the rolling vertical plate close to the support column. The second sliding surface is parallel to the first sliding surface, and a plurality of second support rods are fixedly connected along two vertical edges of the second sliding surface. The direction of each second support rod is perpendicular to the second sliding surface, and one end of each second support rod is fixedly connected to the rolling vertical plate.

[0018] A second sliding roller is also provided parallel to the second sliding surface. The second sliding roller is horizontally arranged, and its two ends are respectively fixedly connected to the other ends of two second support rods arranged oppositely. A second roller is installed on the second sliding roller. The second roller is used for braking the top plate to move downward. The high-temperature threaded steel on the braking top plate slides along the second roller, thereby reducing the damage of the high-temperature threaded steel to the rolling vertical plate.

[0019] Furthermore, the free end of the input roller is provided with an alloy sleeve, which is used to protect the input roller and prevent the high-temperature threaded steel from damaging the input roller, and the outer wall of the alloy sleeve is plated with chrome.

[0020] Furthermore, the angle between the input roller and the horizontal plane is 15 degrees.

[0021] The beneficial effects of the present invention are as follows: the present invention can unload the high-temperature rebar onto the cooling bed by rolling, which causes little damage to the high-temperature rebar, has a high pass rate, and improves production efficiency; and the input roller is chrome-plated, and the normal service life of the input roller reaches 450,000 tons in 3 months, which meets the requirements for efficient transportation of small-sized rebar; the hanging steel of small-sized high-temperature rebar is significantly reduced, the rolling rhythm is guaranteed, the quality of finished steel is guaranteed, the efficiency of cooling bed transportation operation is improved, and the labor intensity of finishing employees is significantly reduced; the consumption of input roller spare parts is significantly reduced, which improves the efficiency of steel rolling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the brake member in the present invention moving to the highest limit position;

[0023] Figure 2 It is a structural schematic diagram of the brake member in the present invention moving to the lowest limit position;

[0024] Figure 3 It is a structural schematic diagram of the rolling vertical plate of the present invention.

[0025] Among them: 1. input motor; 2. input roller; 3. cooling bed straightening plate; 4. brake part; 5. initial inclined plane; 6. brake inclined plane; 7. brake top plate; 8. support column; 9. movable oil cylinder; 10. rolling vertical plate; 11. second sliding surface; 12. second support rod; 13. second sliding roller shaft; 14. second roller. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] The present invention discloses a device for conveying and transferring high-temperature threaded steel to a cooling bed in steel rolling production, such as Figure 1 and Figure 2As shown, it is composed of multiple conveying units arranged in sequence, and the conveying unit is used to convey the high-temperature threaded steel to the cooling bed straightening plate 3 for cooling and straightening. In the prior art, rollers are used to transport it, but when it is transported to the vicinity of the cooling bed, it is unloaded on the cooling bed by natural falling, which is easy to damage the threaded steel and affect the qualified rate.

[0028] The present invention can unload the high-temperature threaded steel onto the cooling bed by rolling, which causes little damage to the high-temperature threaded steel, has a high pass rate, and improves production efficiency; and chrome plating is performed on the input roller 2, so that the normal service life of the input roller 2 reaches 450,000 tons in 3 months, meeting the requirements for efficient transportation of small-sized threaded steel; the hanging of small-sized high-temperature threaded steel is significantly reduced, the rolling rhythm is guaranteed, the quality of finished steel is guaranteed, the efficiency of cooling bed transportation is improved, and the labor intensity of finishing employees is significantly reduced; the consumption of spare parts of the input roller 2 is significantly reduced, thereby improving the benefits of steel rolling.

[0029] Each conveying unit includes an input motor 1 and a brake member 4. An input roller 2 is installed at the output end of the input motor 1. The input roller 2 carries high-temperature rebar. The input roller 2 is used to transport the high-temperature rebar. The input roller 2 is tilted downward from the input motor 1 to the input roller 2 to form an initial inclined surface 5. The angle between the input roller 2 and the horizontal plane is 15 degrees. The top of the brake member 4 is an inclined surface to become a braking inclined surface 6. The braking inclined surface 6 is parallel to the initial inclined surface 5. The brake member 4 is used to move upward or downward so that the braking inclined surface 6 and the initial inclined surface 5 are in the same plane, and then the high-temperature rebar rolls along the slope of the initial inclined surface 5 to the braking inclined surface 6, and the high-temperature rebar on the input roller 2 is conveyed to the cooling bed straightening plate 3.

[0030] The brake component 4 includes a brake top plate 7, a support column 8, and a movable oil cylinder 9. The brake top plate 7 is tilted, and the upper plate surface of the brake top plate 7 is a brake slope 6. The support column 8 is located below the brake top plate 7, and the upper end of the support column 8 is fixedly connected to the brake top plate 7. The movable oil cylinder 9 is located below the support column 8, and the piston end of the movable oil cylinder 9 is fixedly connected to the support column 8. The movable oil cylinder 9 is used to drive the support column 8 and the brake top plate 7 to move up and down. When the movable oil cylinder 9 moves downward, the initial slope 5 and the braking slope 6 are in the same plane, ensuring that the high-temperature threaded steel transported to the predetermined position rolls from the initial slope 5 to the braking slope 6; when the movable oil cylinder 9 moves upward, the braking slope 6 is higher than the initial slope 5, and the braking slope 6 and the receiving plate of the cooling bed straightening plate are in the same plane, and then the high-temperature threaded steel rolls from the braking slope 6 to the cooling bed straightening plate 3.

[0031] The support column 8 is a rectangular parallelepiped or a cube with an inclined top surface. The top surface of the support column 8 has the same inclination angle as the brake top plate 7. The top surface of the support column 8 is adapted to the size and shape of the brake top plate 7. The gap between the side of the support column 8 close to the input roller 2 and the input roller 2 is smaller than the diameter of any high-temperature threaded steel. Since the high-temperature threaded steel needs to first pass through the initial inclined surface 5 and then pass through the brake inclined surface 6 to roll onto the cooling bed straightening plate 3, and the input roller 2 is inclined, there must be a gap between the input roller 2 and the support column 8 to facilitate the up and down movement of the support column 8. However, the gap must be small to prevent small-sized threaded steel from falling through the gap. Therefore, the gap between the support column 8 and the input roller 2 needs to be adjusted to be smaller than the diameter of any high-temperature threaded steel.

[0032] A side surface of the support column 8 close to the input roller 2 is a first sliding surface, and a plurality of first support rods are fixedly connected along the two vertical edges of the first sliding surface. The direction of each first support rod is perpendicular to the first sliding surface, and one end of each first support rod is fixedly connected to the support column 8. A first sliding roller shaft is also arranged parallel to the first sliding surface. The first sliding roller shaft is arranged horizontally, and its two ends are respectively fixedly connected to the other ends of two first support rods arranged oppositely. A first roller is installed on the first sliding roller shaft. The first roller is used to brake the top plate 7 to move upward, so that the high-temperature threaded steel on the input roller 2 slides along the first sliding surface, thereby reducing the damage of the high-temperature threaded steel to the support column 8.

[0033] A rolling vertical plate 10 is provided on one side of the cooling bed straightening plate 3 close to the support column 8. Figure 3 As shown, one side of the rolling vertical plate 10 close to the support column 8 is a second sliding surface 11, and the second sliding surface 11 and the first sliding surface are parallel to each other. A plurality of second support rods 12 are fixedly connected along the two vertical edges of the second sliding surface 11, and the direction of each second support rod 12 is perpendicular to the second sliding surface 11. One end of each second support rod 12 is fixedly connected to the rolling vertical plate 10, and a second sliding roller 13 is also provided parallel to the second sliding surface 11. The second sliding roller 13 is horizontally arranged, and its two ends are respectively fixedly connected to the other ends of the two oppositely arranged second support rods 12, and a second roller 14 is installed on the second sliding roller 13. The second roller 14 is used for braking the top plate 7 to move downward, and the high-temperature threaded steel on the braking top plate 7 slides along the second roller 14, thereby reducing the damage of the high-temperature threaded steel to the rolling vertical plate 10.

[0034] The free end sleeve of the input roller 2 is provided with an alloy sleeve, which is used to protect the input roller 2 and prevent the high-temperature rebar from damaging the input roller 2. The outer wall of the alloy sleeve is plated with chrome. This is because the input roller 2 in the steel rolling production field is in direct contact with the high-temperature rebar. The temperature of the high-temperature rebar is 880-920℃, and the working environment is harsh. The wear and temperature resistance of the input roller 2 must be high. When rolling small-sized rebar, due to the improvement of the rolling process, when the 12 rebar is rolled in five sections, the output per unit time is increased, resulting in faster wear of the input roller 2, which can only be maintained for about 20 days. The depth of the grinding groove will exceed 2mm, which will affect the turning operation of the conveyed rebar. At this time, the input roller 2 must be replaced to restore normality and increase the hourly output of the input roller 2 in small-sized rebar.

[0035] The wear resistance of the input roller 2 is particularly prominent in the production process of small-size rebar. The existing input roller 2 has some disadvantages when the hourly output of small-size rebar increases:

[0036] 1. The rolling speed is increased, the amount of steel passed per hour is greatly increased, the temperature and speed of steel input are significantly higher than before, the hardness of the steel is reduced, the toughness is enhanced, the friction of the steel during input is increased, resulting in increased wear of the input roller 2.

[0037] 2. The amount of steel passing through increases in one hour. The five-cutting process causes more steel to be arranged on the surface of input roller 2. The heat conduction per unit time increases, the temperature of input roller 2 increases, and the wear of input roller 2 increases.

[0038] 3. The wear of input roller 2 is aggravated, making it difficult to adjust the speed of conveying steel. At the same time, when the wear is light, it will cause steel hanging and steel bending, affecting the yield rate and sharply increasing the labor intensity of employees. When the wear is heavy, it will cause flying steel and other machine delays, seriously affecting steel rolling production.

[0039] 4. Input roller 2 wears out in a short period of time, causing regular scheduled shutdowns for inspection and replacement, affecting steel rolling production.

[0040] In order to adapt to the deterioration of conveying conditions, the wear resistance of the alloy sleeve of the input roller is modified, and high chromium material is used to spray-weld the surface of the alloy sleeve, which solves the wear resistance problem and reduces the costs of related steel bending, flying steel and machine delays. After actual use, the wear resistance of the alloy sleeve in the present invention is greatly improved, and it can reach the situation where there is no complete wear of the spray-weld layer for 3 months, and the durability of the input roller 2 is significantly improved; the costs of related steel bending, flying steel and machine delays are greatly reduced, and the life of the input roller 2 is significantly improved, ensuring the normal conveying of small-size high-temperature rebar.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for conveying and transferring high-temperature threaded steel to a cooling bed in steel rolling production, characterized in that: It is composed of a plurality of conveying units arranged in sequence, and the conveying units are used to convey the high-temperature threaded steel to the cooling bed straightening plate (3) for cooling and straightening. Each of the conveying units comprises: An input motor (1) is provided with an input roller (2) at its output end, the input roller (2) carries high-temperature threaded steel, the input roller (2) is used to transport the high-temperature threaded steel, the input roller (2) is arranged to be inclined downward from the input motor (1) to the input roller (2), and the top surface thereof is an initial inclined surface (5). A brake member (4) having a brake slope (6) at its top, the brake slope (6) being parallel to the initial slope (5), and the brake member (4) being used to move upward or downward so that the brake slope (6) and the initial slope (5) are in the same plane, so that the high-temperature threaded steel rolls onto the brake slope (6) along the slope of the initial slope (5), and the high-temperature threaded steel on the input roller (2) is transported to the cooling bed straightening plate (3); The brake member (4) comprises: The brake top plate (7) is arranged obliquely, and its upper plate surface is the brake slope (6). A support column (8) is located below the brake top plate (7), and its upper end is fixedly connected to the brake top plate (7). A movable oil cylinder (9) is located below the support column (8), and its piston end is fixedly connected to the support column (8) and is used to drive the support column (8) and the brake top plate (7) to move up and down. When the movable oil cylinder (9) moves downward, the initial inclined surface (5) and the brake inclined surface (6) are in the same plane, ensuring that the high-temperature threaded steel delivered to the predetermined position rolls from the initial inclined surface (5) to the brake inclined surface (6); when the movable oil cylinder (9) moves upward, the brake inclined surface (6) is higher than the initial inclined surface (5), and the brake inclined surface (6) and the receiving plate of the cooling bed straightening plate are in the same plane, so that the high-temperature threaded steel rolls from the brake inclined surface (6) to the cooling bed straightening plate (3); A side surface of the support column (8) close to the input roller (2) is a first sliding surface, and a plurality of first support rods are fixedly connected along two vertical edges of the first sliding surface, the direction of each first support rod is perpendicular to the first sliding surface, and one end of each first support rod is fixedly connected to the support column (8); A first sliding roller is also provided parallel to the first sliding surface. The first sliding roller is horizontally arranged, and its two ends are respectively fixedly connected to the other ends of two first support rods arranged opposite to each other. A first roller is installed on the first sliding roller. The first roller is used to brake the top plate (7) to move upwards so that the high-temperature threaded steel on the input roller (2) slides along the first sliding surface, thereby reducing damage to the support column (8) caused by the high-temperature threaded steel and conveying the high-temperature threaded steel. The free end of the input roller (2) is provided with an alloy sleeve, the alloy sleeve is used to protect the input roller (2) to prevent the high-temperature threaded steel from damaging the input roller (2), and the outer wall of the alloy sleeve is plated with chrome.

2. The device for conveying and transferring high-temperature threaded steel to a cooling bed in steel rolling production according to claim 1, characterized in that: The support column (8) is a rectangular parallelepiped or a cube with an inclined top surface. The top surface of the support column (8) has the same inclination angle as the brake top plate (7). The top surface of the support column (8) is adapted to the size and shape of the brake top plate (7). The gap between a side surface of the support column (8) close to the input roller (2) and the input roller (2) is smaller than the diameter of any high-temperature threaded steel bar.

3. The device for conveying and transferring high-temperature threaded steel to a cooling bed in steel rolling production according to claim 2, characterized in that: The angle between the input roller (2) and the horizontal plane is 15 degrees.

Images