Combined wear-resistant ground roller suitable for cooling bed input apron board roller way

Abstract

The invention discloses a combined wear-resistant ground roller suitable for a cooling bed input apron board roller way, which comprises a shaft, a round nut, a wear-resistant alloy section roller body, a medium carbon steel section roller body and a flat key, and the wear-resistant alloy section roller body and the medium carbon steel section roller body are connected into a whole through threads; shafts are arranged on inner holes of the wear-resistant alloy section roller body and the medium carbon steel section roller body; the shaft is fixedly connected with the wear-resistant alloy section roller body and the medium carbon steel section roller body through round nuts; a flat key is arranged between the shaft and the medium carbon steel section roller body; and the wear-resistant alloy section roller body is close to one side of a straightening plate of a cooling bed input apron board roller way when being mounted. The wear-resistant alloy section roller body is made of chromium-based tungsten-nickel-molybdenum alloy, and the heat treatment hardness is not less than HRC62; the roller body of the medium carbon steel section roller body is made of 45 # steel, and the heat treatment hardness is HRC 40-42; and the wear-resistant alloy section roller body and the medium carbon steel section roller body are connected into a whole through threads. The device is simple in structure, convenient to install, reliable in operation and suitable for the cooling bed input apron board roller way.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical equipment, and further belongs to the technical field of steel rolling equipment, and specifically relates to a combined wear-resistant roller with simple structure, convenient installation, reliable operation, and suitable for a cooling bed input skirt roller. Background Art

[0002] In steel rolling production, the profile production line mainly produces I-beams, H-beams, and U-beams. The cooling bed input skirt roller is used to transport the rolled products to the cooling bed for cooling. The cooling bed input skirt roller mainly includes ground rollers, skirts, straightening plates, skirt lifting devices and other parts. It is located behind the output roller after the finishing mill and at the entrance of the cooling bed. It receives the rolled products transported by the output roller of the finishing mill and transports the rolled products into the cooling bed through the skirt. In order to ensure that the skirt lifts the rolled products to the cooling bed smoothly, the input ground roller is designed to be tilted 2° along the side of the cooling bed to ensure that the rolled products are transported along the side of the skirt in the input ground roller.

[0003] The current roller structure of the cooling bed input skirt roller is a welded part, and the roller body is made of 35# steel. Due to the particularity of the production process and the ambient temperature of the roller being used at above 700℃, the roller body of the roller on the side of the cooling bed straightening plate will be grooved due to wear in the same position during online use, resulting in defects such as scratches on the surface of the rolled material and deformation of the leg edge when the rolled material is transported and lifted, and the defect cannot be eliminated in the subsequent finishing process, which greatly affects the appearance quality and normal production rhythm of the rolled material. The groove of the roller body on the side of the cooling bed straightening plate will cause the entire roller to be scrapped, which shortens the service life of the roller. At present, the service life of the roller is only about 1 month, which increases the cost of spare parts. At the same time, frequent replacement of the roller increases the labor intensity of the workers and the safety risk during on-site rescue. To this end, the key to solving this problem is to research and develop a combined wear-resistant roller with simple structure, convenient installation, reliable operation, and suitable for the cooling bed input skirt roller. Summary of the invention

[0004] The object of the present invention is to provide a combined wear-resistant roller which is simple in structure, convenient in installation and reliable in operation and suitable for a cooling bed input skirt roller table.

[0005] The object of the present invention is achieved in this way, comprising a shaft, a round nut, a wear-resistant alloy segment roller body, a medium carbon steel segment roller body, and a flat key, wherein the wear-resistant alloy segment roller body and the medium carbon steel segment roller body are connected as a whole through threads; a shaft is arranged on the inner holes of the wear-resistant alloy segment roller body and the medium carbon steel segment roller body; the shaft is fixedly connected to the wear-resistant alloy segment roller body and the medium carbon steel segment roller body through a round nut; a flat key is arranged between the shaft and the medium carbon steel segment roller body; the wear-resistant alloy segment roller body is installed close to the straightening plate side of the cooling bed input skirt roller.

[0006] The invention is composed of a shaft, a round nut, a wear-resistant alloy segment roller body, a medium carbon steel segment roller body and a flat key; the wear-resistant alloy segment roller body is made of a chromium-based tungsten-nickel-molybdenum alloy with a heat treatment hardness of not less than HRC62; the medium carbon steel segment roller body is made of 45# steel with a heat treatment hardness of HRC40-42; the wear-resistant alloy segment roller body and the medium carbon steel segment roller body are connected as a whole by threads; when in use, the wear-resistant alloy segment roller body is aligned with the roller body position that is prone to wear and grooves.

[0007] During the production process, the wear-resistant alloy segment roller body mainly receives the rolled pieces of different specifications delivered by the previous process, and the medium carbon steel segment roller body mainly assists in receiving the rolled pieces and transmitting torque, and ensures that the rolled pieces stay in the predetermined position, preparing for the cooling of the profiles on the cooling bed.

[0008] The roller body of the present invention is composed of different materials, and the wear-resistant alloy roller body section corresponds to the roller body position that is easy to wear and groove, so that the service life of the entire roller body is basically the same; or when one section of the roller body is worn out and scrapped, only this section of the roller body can be replaced.

[0009] The present invention increases the service life of the cooling bed input skirt roller, and the service life of the ground roller is increased from about 1 month to 15 months; reduces the frequency of equipment failures, reduces the cost of using spare parts; reduces the safety risk of manual entry into the working area to deal with failures; improves the appearance quality of profile products; and while increasing machine hour output, greatly reduces energy consumption and reduces production costs.

[0010] The invention has the advantages of simple structure, convenient installation and reliable operation, and is suitable for the cooling bed input skirt plate roller table. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the wear-resistant alloy segment roller body of the present invention; Figure 3 It is a schematic diagram of a medium carbon steel roller body of the present invention; Figure 4 It is a schematic diagram of the overall structure of the original roller; Figure 5 It is a schematic diagram of the working state of the present invention.

[0012] In the figure: 1-shaft, 2-round nut, 3-wear-resistant alloy segment roller body, 4-medium carbon steel segment roller body, 41-front roller hub, 42-roller body, 43-rear roller hub, 5-flat key, 6-in-place roller, 7-coupling, 8-transmission device, 9-skirt lifting device, 10-straightening plate, 11-cooling bed. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes made based on the teachings of the present invention fall within the protection scope of the present invention.

[0014] like Figures 1 to 5 As shown, the present invention includes a shaft 1, a round nut 2, a wear-resistant alloy segment roller body 3, a medium carbon steel segment roller body 4, and a flat key 5. The wear-resistant alloy segment roller body 3 and the medium carbon steel segment roller body 4 are connected as a whole through threads; the shaft 1 is arranged on the inner holes of the wear-resistant alloy segment roller body 3 and the medium carbon steel segment roller body 4; the shaft 1 is fixedly connected to the wear-resistant alloy segment roller body 3 and the medium carbon steel segment roller body 4 through the round nut 2; the flat key 5 is arranged between the shaft 1 and the medium carbon steel segment roller body 4; the wear-resistant alloy segment roller body 3 is installed close to the side of the straightening plate 10 of the cooling bed input skirt roller.

[0015] The right end of the wear-resistant alloy roller body 3 is provided with an internal thread.

[0016] The material of the wear-resistant alloy segment roller body 3 is a chromium-based tungsten-nickel-molybdenum alloy.

[0017] The heat treatment hardness of the wear-resistant alloy roller segment 3 is not less than HRC62.

[0018] The medium carbon steel roller body 4 comprises a front roller hub 41, a roller body 42 and a rear roller hub 43; the front roller hub 41 is arranged at the left end of the inner hole of the roller body 42, and the rear roller hub 43 is arranged at the right end of the inner hole; the outer end of the front roller hub 41 is arranged with an external thread.

[0019] The external thread of the front roller hub 41 is consistent with the internal thread of the right end of the wear-resistant alloy roller body 3.

[0020] The material of the front roller hub 41 and the rear roller hub 43 is 35# steel.

[0021] The front roller hub 41 and the rear roller hub 43 are welded to the roller body 42 .

[0022] The roller body 42 is made of 45# steel.

[0023] The heat treatment hardness of the roller body 42 is HRC40-42.

[0024] Working principle and working process of the present invention: The wear-resistant alloy segment roller body 3 of the present invention is made of chromium-based tungsten-nickel-molybdenum alloy, and its heat treatment hardness is not less than HRC62; the roller body 42 of the medium carbon steel segment roller body 4 is made of 45# steel, and its heat treatment hardness is HRC40-42; the wear-resistant alloy segment roller body 3 and the medium carbon steel segment roller body 4 are connected as a whole by threads; when in use, the wear-resistant alloy segment roller body 3 is placed corresponding to the roller body position that is prone to wear and grooves.

[0025] During the production process, the wear-resistant alloy segment roller body 3 mainly receives the rolled pieces of different specifications delivered by the previous process, and the medium carbon steel segment roller body 4 mainly assists in receiving the rolled pieces and transmitting torque, and ensures that the rolled pieces stay in the predetermined position, preparing for the cooling of the profiles on the cooling bed.

[0026] The roller body of the present invention is composed of different materials. The wear-resistant alloy roller body section 3 corresponds to the roller body position that is easy to wear and groove, so that the service life of the entire roller body is basically the same; or when one section of the roller body is worn out and scrapped, only this section of the roller body can be replaced.

Claims

1. A combined wear-resistant roller suitable for a cooling bed input skirt roller, comprising a shaft (1), a round nut (2), a wear-resistant alloy roller section (3), a medium carbon steel roller section (4), and a flat key (5), wherein: The wear-resistant alloy segment roller body (3) and the medium carbon steel segment roller body (4) are connected as a whole through threads; a shaft (1) is arranged on the inner holes of the wear-resistant alloy segment roller body (3) and the medium carbon steel segment roller body (4); the shaft (1) is fixedly connected to the wear-resistant alloy segment roller body (3) and the medium carbon steel segment roller body (4) through a round nut (2); a flat key (5) is arranged between the shaft (1) and the medium carbon steel segment roller body (4); when the wear-resistant alloy segment roller body (3) is installed, it is close to the straightening plate (10) side of the cooling bed input skirt roller.

2. The combined wear-resistant roller suitable for the cooling bed input skirt roller according to claim 1 is characterized in that: The right end of the wear-resistant alloy roller segment (3) is provided with an internal thread.

3. The combined wear-resistant roller suitable for the cooling bed input skirt roller according to claim 1 is characterized in that: The material of the wear-resistant alloy segment roller body (3) is a chromium-based tungsten-nickel-molybdenum alloy.

4. The combined wear-resistant roller suitable for the cooling bed input skirt roller according to claim 1 is characterized in that: The heat treatment hardness of the wear-resistant alloy roller segment (3) is not less than HRC62.

5. The combined wear-resistant roller suitable for the cooling bed input skirt roller table according to claim 1 is characterized by: The medium carbon steel segment roller body (4) comprises a front roller hub (41), a roller body (42), and a rear roller hub (43); the front roller hub (41) is arranged at the left end of the inner hole of the roller body (42), and the rear roller hub (43) is arranged at the right end of the inner hole; and an external thread is arranged at the outer end of the front roller hub (41).

6. The combined wear-resistant roller suitable for the cooling bed input skirt roller according to claim 1 or 5, characterized in that: The external thread of the front roller hub (41) is consistent with the internal thread of the right end of the wear-resistant alloy roller body (3).

7. The combined wear-resistant roller suitable for the cooling bed input skirt roller table according to claim 5 is characterized by: The material of the front roller hub (41) and the rear roller hub (43) is 35# steel.

8. The combined wear-resistant roller suitable for the cooling bed input skirt roller table according to claim 5 is characterized by: The front roller hub (41) and the rear roller hub (43) are welded to the roller body (42).

9. The combined wear-resistant roller suitable for the cooling bed input skirt roller table according to claim 5 is characterized by: The roller body (42) is made of 45# steel.

10. The combined wear-resistant roller suitable for the cooling bed input skirt roller table according to claim 5 is characterized by: The heat treatment hardness of the roller body (42) is HRC40-42.

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