A quick roll changing device in a continuous rolling production line

Abstract

This utility model relates to the field of roll changing technology in continuous rolling production lines, and discloses a quick roll changing device in a continuous rolling production line. It includes a work roll, a support roll at the bottom of the work roll, and limit plates fixedly connected to the top of both ends of the support roll. Limit pins are fixedly connected to the top of both ends of the limit plates. Two limit grooves are formed at the bottom of both ends of the work roll, and the limit grooves are adapted to the limit plates. Two limit slots are formed at the positions of the limit grooves on the work roll, and the limit slots are adapted to the limit pins. Four first through holes are formed at the top of the limit plates, and four limit rods are arranged in the first through holes. A fixed plate is fixedly connected to the same side of the four limit rods at the same end. A round rod is fixedly connected to the fixed plate on the side away from the limit rods. This utility model eliminates the need for cumbersome special tools and complex operating procedures, significantly shortening the disassembly and assembly time, facilitating work roll replacement, and improving maintenance convenience.

Description

Technical Field

[0001] This utility model relates to the field of roll changing technology in continuous rolling production lines, and in particular to a rapid roll changing device in a continuous rolling production line. Background Technology

[0002] Continuous rolling refers to the process of using one or more sets of multi-roll mills to continuously pass metal billets through multiple rolls for multiple deformations, gradually processing the rough billets into finished products such as metal strips, plates, bars, and wires with certain specifications and properties. It is widely used in the steel industry, non-ferrous metals and alloys, and the processing of special materials.

[0003] After a period of use, the work rolls on the rolling mill will experience wear and tear, leading to a decline in the surface quality of the rolls. They need to be replaced periodically according to the factory's operational requirements. However, the work rolls of most existing rolling mills are difficult to disassemble and assemble, often requiring specialized tools. This makes the disassembly and assembly process cumbersome and time-consuming, resulting in prolonged equipment downtime and affecting production continuity and output. Therefore, it is necessary to design a quick roll changing device for continuous rolling production lines to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rapid roll changing device for continuous rolling production lines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A quick roll changing device in a continuous rolling production line includes a work roll, a support roll at the bottom of the work roll, limit plates fixedly connected to the top of both ends of the support roll, limit pins fixedly connected to the top of both ends of the limit plates, two limit grooves formed at the bottom of both ends of the work roll, the limit grooves being adapted to the limit plates, two limit slots formed at the positions of the limit grooves on the work roll, the limit slots being adapted to the limit pins, four first through holes formed at the top of the limit plates, four limit rods set in the first through holes, a fixed plate fixedly connected to the same side of the four limit rods at the same end, a round rod fixedly connected to the side of the fixed plate away from the limit rods, the round rods being fitted with springs, two round rods on the same side being fixedly connected to the same handle, and four first round grooves formed at the positions of the limit grooves on the work roll, the first round grooves being adapted to the limit rods. Due to the use of limit plates, first through holes, and... The technical means of limiting the position between the work roll and the limiting plate by the cooperation of the limiting rod and the first circular groove. Therefore, after limiting the position between the work roll and the limiting plate, the position between the work roll and the support roll can be limited, thus ensuring the stability of the position between the work roll and the support roll and completing the assembly. The limitation can be released by removing the limiting rod from the first circular groove and the first through hole, and the work roll can be separated from the limiting plate, which can also separate the work roll and the support roll, completing the disassembly and enabling quick roll change. This effectively solves the problem mentioned in the background technology that the disassembly and assembly of work rolls in most existing rolling mills are difficult, mostly requiring the use of special tools, and the operation is difficult and requires professional skills, resulting in a cumbersome and time-consuming disassembly and assembly process, causing long-term equipment downtime and affecting production continuity and output. Thus, it realizes the technical effect of no longer relying on cumbersome special tools and complicated operation steps, significantly shortening the disassembly and assembly time, facilitating the replacement of work rolls, and improving maintenance convenience.

[0006] As a further embodiment of this utility model, the two round rods at the same end are fitted with the same guide plate, the round rods are slidably connected to the guide plate, and the guide plate is fixedly connected to the work roller.

[0007] As a further embodiment of this utility model, guide grooves are provided at both ends of the guide plate, the guide grooves are adapted to the round rod, and the round rod is disposed in the guide groove.

[0008] As a further embodiment of this utility model, the working roller has four second through holes at the position of the limiting groove. The second through holes are adapted to the limiting rods, and the limiting rods are disposed in the second through holes and are slidably connected to the working rollers.

[0009] As a further embodiment of this utility model, two arc-shaped mounting plates are fixedly connected to both ends of the support roller, and two reinforcing rods are fixedly connected to the top of the arc-shaped mounting plates. The reinforcing rods pass through the working roller, and the working roller has a second circular groove adapted to the reinforcing rods at the position of the reinforcing rods. The reinforcing rods are set in the second circular groove.

[0010] As a further embodiment of this utility model, two lifting rings are fixedly connected to the top of each end of the working roller.

[0011] The beneficial effects of this utility model are as follows: This invention employs a technique that uses a limiting plate, a first through hole, a limiting rod, and a first circular groove to restrict the position between the work roll and the limiting plate. By restricting the position between the work roll and the limiting plate, the position between the work roll and the support roll is also restricted, ensuring positional stability between them. Once assembly is complete, removing the limiting rod from the first circular groove and the first through hole releases the restriction, allowing the work roll to separate from the limiting plate and thus from the support roll. This enables rapid roll replacement and effectively solves the problem presented in the background art where the work rolls of most existing rolling mills are difficult to disassemble and assemble, often requiring specialized tools and specialized skills, leading to cumbersome and time-consuming processes, prolonged equipment downtime, and impacts production continuity and output. This invention eliminates the need for cumbersome specialized tools and complex operating procedures, significantly shortening disassembly and assembly time, facilitating work roll replacement, and improving maintenance convenience. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a rapid roll changing device in a continuous rolling production line proposed in this utility model. Figure 2 This is a partial structural schematic diagram of a rapid roll changing device in a continuous rolling production line proposed in this utility model; Figure 3 This is a schematic diagram of the working roll of a rapid roll changing device in a continuous rolling production line proposed in this utility model. Figure 4 This is a schematic diagram of the reinforcing rod structure of a rapid roll changing device in a continuous rolling production line proposed in this utility model. Figure 5 This is a schematic diagram of the structure of the limiting plate of a rapid roll changing device in a continuous rolling production line proposed in this utility model; Figure 6 This is a schematic cross-sectional view of the working roll of a rapid roll changing device in a continuous rolling production line proposed in this utility model. Figure 7This is a schematic diagram of the cross-sectional unfolded structure of the working roll of a quick roll changing device in a continuous rolling production line proposed in this utility model.

[0013] In the diagram: 1. Working roller; 2. Support roller; 3. Limiting plate; 4. Limiting pin; 5. Limiting groove; 6. Limiting slot; 7. First through hole; 8. Limiting rod; 9. Fixing plate; 10. Round rod; 11. Spring; 12. Handle; 13. Guide plate; 14. Guide groove; 15. First round groove; 16. Second through hole; 17. Arc-shaped mounting plate; 18. Reinforcing rod; 19. Second round groove; 20. Lifting ring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] Reference Figure 1 - Figure 7A quick roll changing device for a continuous rolling production line includes a work roll 1, a support roll 2 at the bottom of the work roll 1, limit plates 3 fixedly connected to the top of both ends of the support roll 2, limit pins 4 fixedly connected to the top of both ends of the limit plates 3, two limit grooves 5 formed at the bottom of both ends of the work roll 1, the limit grooves 5 being adapted to the limit plates 3, two limit slots 6 formed at the positions of the limit grooves 5 of the work roll 1, the limit slots 6 being adapted to the limit pins 4, and a top of the limit plates 3 having a... Four first through holes 7 are provided, and four limiting rods 8 are provided in the first through holes 7. The same fixing plate 9 is fixedly connected to the same side of the four limiting rods 8 at the same end. A round rod 10 is fixedly connected to the side of the fixing plate 9 away from the limiting rod 8. A spring 11 is sleeved on the round rod 10. The same handle 12 is fixedly connected to two round rods 10 on the same side. The working roller 1 has four first round grooves 15 at the position of the limiting groove 5. The first round grooves 15 are adapted to the limiting rods 8. Due to the use of the limiting plate The technical means of restricting the position between the work roll and the limiting plate through the cooperation of the first through hole, the limiting rod, and the first circular groove. Therefore, after restricting the position between the work roll and the limiting plate, the position between the work roll and the support roll can be restricted, thus ensuring the stability of the position between the work roll and the support roll and completing the assembly. The restriction can be released by removing the limiting rod from the first circular groove and the first through hole, and the work roll can be separated from the limiting plate, which also allows the work roll and the support roll to be separated, completing the disassembly and enabling quick roll change. This effectively solves the problem mentioned in the background art that the disassembly and assembly of work rolls in most existing rolling mills is difficult, often requiring the use of special tools, which is difficult to operate and requires professional skills, resulting in a cumbersome and time-consuming disassembly and assembly process, causing long-term equipment downtime and affecting production continuity and output. Thus, it achieves the technical effect of no longer relying on cumbersome special tools and complex operating procedures, significantly shortening the disassembly and assembly time, facilitating the replacement of work rolls, and improving maintenance convenience.

[0017] In this embodiment, two round rods 10 at the same end are fitted with the same guide plate 13. The round rods 10 are slidably connected to the guide plate 13, and the guide plate 13 is fixedly connected to the work roller 1.

[0018] In this embodiment, guide grooves 14 are provided at both ends of the guide plate 13. The guide grooves 14 are adapted to the round rod 10, and the round rod 10 is disposed in the guide grooves 14. When the round rod 10 moves, it will move along the guide grooves 14, thereby ensuring the stability of the round rod 10 during movement.

[0019] In this embodiment, the working roller 1 has four second through holes 16 at the position of the limiting groove 5. The second through holes 16 are adapted to the limiting rod 8. The limiting rod 8 is disposed in the second through holes 16 and is slidably connected to the working roller 1.

[0020] In this embodiment, two arc-shaped mounting plates 17 are fixedly connected to both ends of the support roller 2. Two reinforcing rods 18 are fixedly connected to the top of the arc-shaped mounting plates 17. The reinforcing rods 18 pass through the working roller 1. The working roller 1 has a second circular groove 19 that matches the position of the reinforcing rod 18. The reinforcing rod 18 is set in the second circular groove 19. Through the cooperation of the reinforcing rod 18 and the second circular groove 19, the supporting force is increased, thereby ensuring the relative position stability between the working roller 1 and the support roller 2.

[0021] In this embodiment, two lifting rings 20 are fixedly connected to the top of both ends of the working roller 1. By using an external lifting device, the hanging rope is tied to the lifting rings 20, and the working roller 1 can be lifted and moved.

[0022] Working principle: During assembly, an external hoisting device is used. The hoisting rope is attached to the lifting ring 20 to lift and transport the work roller 1 to the top of the support roller 2. Then, the work roller 1 is placed on the limiting plate 3, which is located inside the work roller 1. Pulling the handle 12 moves the handle 12, which in turn moves the round rod 10. The round rod 10 moves along the guide groove 14, and the movement of the round rod 10 also moves the fixing plate 9. The fixing plate 9 compresses the spring 11, causing it to contract. The movement of the fixing plate 9 also moves the limiting rod 8, moving it out of the limiting groove 5 and to the position of the second through hole 16, allowing the work roller 1 to continue descending. At the same time, the limiting pin 4 is inserted into the limiting slot 6. Releasing the handle 12 causes the contracted spring 11 to extend, thus allowing the work roller 1 to descend further. Moving the fixed plate 9 closer to the limiting plate 3 causes the limiting rod 8 to move through the first through hole 7 and into the first circular groove 15, thus restricting the position of the limiting plate 3 and consequently the position between the work roller 1 and the support roller 2. The spring force of the spring 11 ensures that the limiting rod 8 remains stably positioned within the first through hole 7 and the first circular groove 15 without external force applied by the operator, guaranteeing the stability of the position between the work roller 1 and the support roller 2. At this time, the reinforcing rod 18 is positioned within the second circular groove 19, further enhancing stability. When changing rollers, pulling the handle 12 again moves the handle 12, allowing the limiting rod 8 to be removed from the first through hole 7, releasing the restriction on the limiting plate 3. This allows the work roller 1 and the support roller 2 to be separated for roller replacement. The new roller can then be installed using the same installation method.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick roll changing device in a continuous rolling production line, comprising a work roll (1), characterized in that, The bottom of the working roller (1) is provided with a support roller (2). Both ends of the support roller (2) are fixedly connected to a limiting plate (3). Both ends of the limiting plate (3) are fixedly connected to limiting pins (4). Both ends of the working roller (1) have two limiting grooves (5) at their bottoms. The limiting grooves (5) are adapted to the limiting plate (3). The working roller (1) has two limiting slots (6) at the positions of the limiting grooves (5). The limiting slots (6) are adapted to the limiting pins (4). The top of the limiting plate (3) has four first through holes (7). Four limiting rods (8) are provided in the first through hole (7). The same fixing plate (9) is fixedly connected to the same side of the four limiting rods (8) at the same end. A round rod (10) is fixedly connected to the side of the fixing plate (9) away from the limiting rod (8). A spring (11) is sleeved on the round rod (10). The same handle (12) is fixedly connected to the two round rods (10) on the same side. The working roller (1) has four first round grooves (15) at the position of the limiting groove (5). The first round grooves (15) are adapted to the limiting rods (8).

2. The rapid roll changing device in a continuous rolling production line according to claim 1, characterized in that, Two round rods (10) at the same end are fitted with the same guide plate (13), the round rods (10) are slidably connected to the guide plate (13), and the guide plate (13) is fixedly connected to the work roller (1).

3. The quick roll changing device in a continuous rolling production line according to claim 2, characterized in that, The guide plate (13) has guide grooves (14) at both ends. The guide grooves (14) are adapted to the round rod (10), and the round rod (10) is set in the guide grooves (14).

4. The quick roll changing device in a continuous rolling production line according to claim 1, characterized in that, The working roller (1) has four second through holes (16) at the position of the limiting groove (5). The second through holes (16) are adapted to the limiting rod (8). The limiting rod (8) is set in the second through hole (16) and the limiting rod (8) is slidably connected to the working roller (1).

5. The quick roll changing device in a continuous rolling production line according to claim 1, characterized in that, Two arc-shaped mounting plates (17) are fixedly connected to both ends of the support roller (2). Two reinforcing rods (18) are fixedly connected to the top of the arc-shaped mounting plates (17). The reinforcing rods (18) pass through the working roller (1). The working roller (1) has a second circular groove (19) that matches the position of the reinforcing rods (18). The reinforcing rods (18) are set in the second circular groove (19).

6. The quick roll changing device in a continuous rolling production line according to claim 5, characterized in that, Two lifting rings (20) are fixedly connected to the top of both ends of the work roller (1).

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