Roll changing device of continuous annealing furnace

Abstract

The utility model discloses a roller changing device of a continuous annealing furnace, which belongs to the technical field of annealing furnaces and comprises a movable guide rail, a movable platform is slidably connected onto the movable guide rail, a lifting cylinder is arranged above the movable platform, a roller changing platform is arranged at the telescopic end of the lifting cylinder, and an electric guide rail is arranged on the roller changing platform. A first electric sliding block and a second electric sliding block are slidably connected to the electric guide rail. A roller changing seat is arranged on the first electric sliding block, a roller changing groove is formed in the roller changing seat, a driving mechanism is arranged on the roller changing seat, and an annular clamping mechanism is fixedly connected to the driving mechanism; a roller placing seat is arranged on the second electric sliding block, a containing groove is formed in the roller placing seat, a pushing mechanism is arranged in the containing groove, and an annular clamping mechanism is fixedly connected to the pushing mechanism, so that the roller replacing step can be simplified, and the furnace roller can be safely and effectively replaced in a high-temperature environment; and the automation level and the production efficiency of the whole annealing process can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of annealing furnaces, and particularly relates to a roll changing device for a continuous annealing furnace. Background Art

[0002] A continuous annealing furnace is a heat treatment equipment widely used in the steel industry. It is mainly used for annealing metal wire rods to reduce or eliminate cold working hardening. Through annealing treatment, the metal material can be softened, its hardness can be reduced, its plasticity and toughness can be improved, its chemical composition can be made more uniform, and residual stress can be removed, so as to obtain the expected physical properties. This is particularly important for metal materials or workpieces that have undergone casting, forging, rolling, welding or machining.

[0003] During the use of a continuous annealing furnace, the furnace rolls are one of the key components, which are used to support and convey the metal wire rods to be processed. However, due to the high-temperature environment and mechanical wear during the production process, the furnace rolls are prone to damage and must be replaced regularly to ensure the normal operation of the annealing furnace. The traditional roll changing method is usually too complicated and mainly relies on simple mechanical hoisting operations. These operation steps include disassembling the furnace rolls, hoisting the damaged furnace rolls, and installing new furnace rolls. Since the annealing furnace has a high temperature during operation, the removed furnace rolls usually still have a high temperature, which not only increases the operation difficulty but also poses certain safety hazards. The roll changing process involves multiple steps of disassembly and installation, which requires a lot of time and manpower. The disassembly and installation operations of high-temperature furnace rolls have safety hazards such as scalding, affecting the safety of operators. The simple mechanical hoisting operation method has low efficiency, increases the shutdown time of the annealing furnace, and affects the production efficiency.

[0004] Based on this, a new type of roll changing device for a continuous annealing furnace is proposed. This device can realize the rapid disassembly and installation of furnace rolls, thus significantly improving the roll changing efficiency and ensuring the safety during the operation process. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a roll changing device for a continuous annealing furnace to solve at least one aspect of the problems and defects mentioned in the above background art.

[0006] Provide a roll changing device for a continuous annealing furnace, including a moving guide rail, a moving platform is slidably connected to the moving guide rail, a lifting cylinder is arranged above the moving platform, a roll changing platform is arranged at the telescopic end of the lifting cylinder, an electric guide rail is arranged on the roll changing platform, and a first electric slider and a second electric slider are respectively slidably connected to the electric guide rail;

[0007] A roll changing seat is arranged on the first electric slider, a roll changing groove is arranged in the roll changing seat, a driving mechanism is arranged on the roll changing seat, an annular clamping mechanism is fixedly connected to the driving mechanism, and the annular clamping mechanism is slidably connected in the roll changing groove;

[0008] A roller placing seat is arranged on the second electric slider. A receiving groove is arranged inside the roller placing seat. A pushing mechanism is arranged inside the receiving groove. An annular clamping mechanism is also fixedly connected to the pushing mechanism. The annular clamping mechanism is slidably connected inside the receiving groove;

[0009] The moving platform slides on the moving guide rail until the moving platform moves close to the old furnace roller to be replaced in the annealing furnace. The lifting cylinder drives the entire roller changing platform to rise until the roller changing seat on the roller changing platform rises to the same height as one end of the old furnace roller to be replaced. At this time, the annular clamping mechanism on the driving mechanism is at the same height as one end of the old furnace roller to be replaced. The first electric slider slides on the electric guide rail to drive the roller changing seat to align with one end of the furnace roller to be replaced on the annealing furnace. After alignment, the annular clamping mechanism on the driving mechanism clamps one end of the old furnace roller. The driving mechanism is started to drive the old furnace roller clamped by the annular clamping mechanism to move along the roller changing groove until the old furnace roller is received in the roller changing groove, and the replacement of the old furnace roller is completed; the first electric slider slides to one side of the electric guide rail again, and the second electric slider slides to align with the position on the annealing furnace where the furnace roller needs to be installed. The pushing mechanism is started to slide and push the new furnace roller clamped inside the annular clamping mechanism on the pushing mechanism from the receiving groove into the annealing furnace, completing the installation of the new furnace roller. It can realize the rapid disassembly and installation of the furnace roller, improve the roller changing efficiency, and ensure the safety during the operation process.

[0010] Further, the driving mechanism includes a driving motor. The driving motor is arranged on one side of the roller changing seat. The output end of the driving motor is fixedly connected with a reciprocating lead screw. The reciprocating lead screw is rotatably connected inside the roller changing seat. A connecting block is threadedly connected to the reciprocating lead screw. The annular clamping mechanism is fixedly connected to the connecting block. When the driving motor is started, it drives the reciprocating lead screw to rotate. As the reciprocating lead screw rotates, the connecting block moves linearly along the axial direction of the reciprocating lead screw under the action of the thread. The linear movement of the connecting block drives the annular clamping mechanism to move synchronously. The annular clamping mechanism clamps one end of the waste furnace roller through its annular structure. As the connecting block moves, the annular clamping mechanism moves the clamped waste furnace roller along the roller changing groove to realize the replacement of the waste furnace roller.

[0011] Further, a limiting groove is also arranged on one side of the inner wall of the roller changing groove. Driven by the driving mechanism, the old furnace roller moves along the roller changing groove and disengages from the annealing furnace. When one end of the old furnace roller moves to the position of the limiting groove, the limiting groove can prevent the old furnace roller from continuing to move. The driving mechanism stops, and one end of the old furnace roller stays stably in the limiting groove. The whole old furnace roller is placed in the roller changing groove and waits for further processing later.

[0012] Further, ceramic fiber boards are provided on the upper parts of the roll-changing grooves. The ceramic fiber boards have high-temperature resistance and can effectively prevent and reduce the heat transfer of the old furnace rolls in the high-temperature state, protecting the roll-changing grooves and surrounding structures from high-temperature damage. The ceramic fiber boards remain stable in the high-temperature environment, are not easily deformed or broken, ensuring the stability of the old furnace roll replacement process in the high-temperature state. In addition, to cope with the heat protection and stability required during the placement and replacement process of the high-temperature furnace rolls, the thickness of the ceramic fiber boards is generally 10-20 mm. High-temperature adhesives or mechanical fixing methods (such as bolt connection or snap connection, etc.) are used to ensure that the ceramic fiber boards do not fall off in the high-temperature environment. The ceramic fiber boards are customized according to the size of the roll-changing grooves to ensure that the entire upper area of the roll-changing grooves is covered, reducing the impact of the old furnace rolls in the high-temperature state on the operators and improving the operation safety.

[0013] Further, the pushing mechanism includes a pushing cylinder. The pushing cylinder is arranged in the receiving groove. The telescopic end of the pushing cylinder is fixedly connected with a mounting plate. A ring-shaped clamping mechanism is fixedly connected to the mounting plate. The second electric slider slides on the electric guide rail, driving the new furnace roll placed in the receiving groove on the roll placing seat to move to the position on the annealing furnace where the furnace roll needs to be installed for alignment. The telescopic end of the pushing cylinder is activated to drive the mounting plate to move, driving the ring-shaped clamping mechanism fixedly connected to the mounting plate to move. The ring-shaped clamping mechanism on the mounting plate has the same structure as the ring-shaped clamping mechanism on the driving mechanism. Thus, the new furnace roll clamped by the ring-shaped clamping mechanism fixedly connected to the mounting plate is driven to move along the receiving groove until the new furnace roll moves to the furnace roll installation position inside the annealing furnace.

[0014] Further, the ring-shaped clamping mechanism includes a ring-shaped frame body. The ring-shaped frame bodies are respectively arranged on the mounting plate and the connecting block. Lower arc-shaped limiting plates are arranged at the bottoms of the ring-shaped frame bodies. Electric push rods are arranged on the upper parts of the ring-shaped frame bodies. The telescopic ends of the electric push rods are fixedly connected with upper arc-shaped limiting plates. During the disassembly process, the electric push rods in the ring-shaped clamping mechanism on the connecting block are activated, driving the upper arc-shaped limiting plates to move downward to form a clamping area with the lower arc-shaped limiting plates, clamping one end of the old furnace roll. During the installation process, the electric push rods in the ring-shaped clamping mechanism on the mounting plate are activated, driving the upper arc-shaped limiting plates to move downward to form a clamping area with the lower arc-shaped limiting plates, which is to clamp one end of the new furnace roll to facilitate its stable movement in the receiving groove and facilitate the installation of the new furnace roll.

[0015] Furthermore, high-temperature resistant plates are provided on both the upper arc-shaped limiting plate and the lower arc-shaped limiting plate. The high-temperature resistant plate is an alumina ceramic plate. The alumina ceramic plate has high high-temperature resistance and can work for a long time in an environment up to 1600°C. It has high strength and hardness, can resist mechanical stress and wear, has good thermal stability in high-temperature environments, is not easily deformed or cracked, and can effectively isolate high temperatures, protecting the metal structures of the upper arc-shaped limiting plate and the lower arc-shaped limiting plate from high-temperature damage. By insulating with the high-temperature resistant plate, heat conduction is reduced, improving the thermal management ability of the entire roll-changing device and ensuring the stability of the equipment in the high-temperature environment near the annealing furnace when installing or disassembling the furnace roll.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The moving platform slides on the moving guide rail until it moves close to the old furnace roll to be replaced in the annealing furnace. The lifting cylinder drives the entire roll-changing platform to rise until the roll-changing platform rises to the height of the old furnace roll to be replaced. The first electric slider slides on the electric guide rail to drive the roll-changing seat to align with the furnace roll to be replaced on the annealing furnace. After alignment, the annular clamping mechanism clamps one end of the old furnace roll, and the driving mechanism drives the old furnace roll to be replaced to move along the roll-changing groove until the old furnace roll is accommodated in the roll-changing groove. After the old furnace roll is replaced, the first electric slider slides to one side of the electric guide rail, and the second electric slider slides on the electric guide rail to align with the position on the annealing furnace where the new furnace roll needs to be installed. The pushing mechanism is activated to push the new furnace roll clamped in the annular clamping mechanism on the pushing mechanism into the annealing furnace, completing the installation of the new furnace roll. It can achieve rapid disassembly and installation of the furnace roll, thereby significantly improving the roll-changing efficiency, ensuring safety during the operation process, simplifying the roll-changing steps, and being able to safely and effectively replace the furnace roll in a high-temperature environment, which helps to improve the automation level and production efficiency of the entire annealing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a roll-changing device for a continuous annealing furnace;

[0020] Figure 2 It is a side view structural schematic diagram of the overall structure provided by an embodiment of the present utility model;

[0021] Figure 3 It is a top view sectional structural schematic diagram of the roll-changing platform provided by an embodiment of the present utility model;

[0022] Figure 4 It is a structural schematic diagram of the annular clamping mechanism provided by an embodiment of the present utility model.

[0023] In the figure: 1. Moving guide rail; 2. Moving platform; 3. Lifting cylinder; 4. Roll changing platform; 5. Electric guide rail; 6. First electric slider; 7. Second electric slider; 8. Roll changing seat; 81. Roll changing groove; 82. Limiting groove; 83. Ceramic fiber board; 9. Driving mechanism; 91. Driving motor; 92. Reciprocating lead screw; 93. Connecting block; 10. Ring-shaped clamping mechanism; 101. Ring-shaped frame; 102. Lower arc-shaped limiting plate; 103. Electric push rod; 104. Upper arc-shaped limiting plate; 105. High-temperature resistant plate; 11. Roll placing seat; 111. Accommodating groove; 12. Pushing mechanism; 121. Pushing cylinder; 122. Mounting plate. Specific embodiments

[0024] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0026] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, and understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0028] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0030] Please refer to Figures 1-4 As shown, in an embodiment of the present utility model, a roll changing device for a continuous annealing furnace includes a moving guide rail 1. A moving platform 2 is slidably connected to the moving guide rail 1. In this embodiment, there are two moving guide rails 1, and a moving platform 2 is slidably connected between the two moving guide rails 1. The moving platform 2 slides on the moving guide rail 1 to adjust the position of the entire moving platform 2. An elevating cylinder 3 is arranged above the moving platform 2. The elevating cylinder 3 expands and contracts to adjust the height of the entire roll changing platform 4. The telescopic end of the elevating cylinder 3 is provided with a roll changing platform 4. An electric guide rail 5 is arranged on the roll changing platform 4. A first electric slider 6 and a second electric slider 7 are respectively slidably connected to the electric guide rail 5; A roll changing seat 8 is arranged on the first electric slider 6. A roll changing groove 81 is arranged in the roll changing seat 8. The roll changing groove 81 is used to accommodate the old furnace roll. A driving mechanism 9 is arranged on the roll changing seat 8. The driving mechanism 9 is used to drive the annular clamping mechanism 10 to move. The annular clamping mechanism 10 is fixedly connected to the driving mechanism 9. The annular clamping mechanism 10 is slidably connected in the roll changing groove 81. The annular clamping mechanism 10 on the driving mechanism 9 is used to clamp the old furnace roll that needs to be replaced in the annealing furnace;

[0031] A roll placing seat 11 is arranged on the second electric slider 7. A receiving groove 111 is arranged in the roll placing seat 11. The receiving groove 111 is used to place the new furnace roll. A pushing mechanism 12 is arranged in the receiving groove 111. The annular clamping mechanism 10 is also fixedly connected to the pushing mechanism 12. The annular clamping mechanism 10 on the pushing mechanism 12 clamps the new furnace roll. The annular clamping mechanism 10 on the pushing mechanism 12 is slidably connected in the receiving groove 111. The annular clamping mechanism 10 on the pushing mechanism 12 has the same structure as the annular clamping mechanism 10 on the driving mechanism 9. The annular clamping mechanism 10 on the pushing mechanism 12 is used to clamp the new furnace roll to be replaced. The pushing mechanism 12 is used to push the new furnace roll clamped by the annular clamping mechanism 10 on it into the annealing furnace for installation;

[0032] The moving platform 2 slides on the moving guide rail 1 until it moves close to the old furnace roller to be replaced in the annealing furnace. Adjust the specific position of the moving platform 2. The lifting cylinder 3 drives the entire roller changing platform 4 to rise until the roller changing seat 8 on the roller changing platform 4 rises to the same height as one end of the old furnace roller to be replaced. At this time, the annular clamping mechanism 10 on the driving mechanism 9 is at the same height as one end of the old furnace roller to be replaced. Further, the first electric slider 6 slides on the electric guide rail 5 to drive the roller changing seat 8 to align with one end of the furnace roller to be replaced on the annealing furnace. After alignment, the annular clamping mechanism 10 on the driving mechanism 9 clamps one end of the old furnace roller. The driving mechanism 9 is started to drive the old furnace roller clamped by the annular clamping mechanism 10 to move along the roller changing groove 81 until the old furnace roller is accommodated in the roller changing groove 81, and the replacement of the old furnace roller is completed;

[0033] The first electric slider 6 slides to one side of the electric guide rail 5 again. The second electric slider 7 slides to align the roller placing seat 11 with the position on the annealing furnace where the furnace roller needs to be installed. The pushing mechanism 12 is started to slide and push the new furnace roller clamped in the inner annular clamping mechanism 10 on the pushing mechanism 12 from the accommodating groove 111 into the annealing furnace, completing the installation of the new furnace roller. It can realize the rapid disassembly and installation of the furnace roller, thereby significantly improving the roller changing efficiency and ensuring the safety during the operation process.

[0034] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 3 As shown, the driving mechanism 9 includes a driving motor 91. The driving motor 91 is arranged on one side of the roller changing seat 8. The output end of the driving motor 91 is fixedly connected with a reciprocating lead screw 92. The reciprocating lead screw 92 is rotatably connected inside the roller changing seat 8. A connecting block 93 is threadedly connected to the reciprocating lead screw 92. The annular clamping mechanism 10 is fixedly connected to the connecting block 93. When the driving motor 91 is started, it provides rotational power through the output shaft to drive the reciprocating lead screw 92 to rotate. As the reciprocating lead screw 92 rotates, the connecting block 93 moves linearly along the axial direction of the reciprocating lead screw 92 under the action of the thread. The linear movement of the connecting block 93 drives the annular clamping mechanism to move synchronously. The annular clamping mechanism 10 clamps one end of the waste furnace roller through the annular structure. As the connecting block 93 moves, the annular clamping mechanism 10 moves the clamped waste furnace roller along the roller changing groove 81 to realize the replacement of the waste furnace roller.

[0035] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 3As shown, a limiting groove 82 is further provided on one side of the inner wall of the roll changing groove 81. When the driving mechanism 9 is started, the annular clamping mechanism 10 on the connecting block 93 is driven to clamp one end of the old furnace roll and move along the roll changing groove 81. Driven by the driving mechanism 9, the old furnace roll moves along the roll changing groove 81 and disengages from the annealing furnace. When one end of the old furnace roll moves to the position of the limiting groove 82, the limiting groove 82 can prevent the old furnace roll from continuing to move. The driving mechanism 9 stops, and one end of the old furnace roll stays stably in the limiting groove 82, while the whole old furnace roll is placed in the roll changing groove 81, waiting for further processing later.

[0036] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 3 As shown, ceramic fiber boards 83 are provided on the upper part of the roll changing groove 81. The ceramic fiber boards 83 have high temperature resistance and can effectively prevent and reduce the heat transfer of the old furnace roll in the high temperature state, protecting the roll changing groove 81 and the surrounding structures from high temperature damage. The ceramic fiber boards 83 remain stable in the high temperature environment, are not easy to deform or break, ensuring the stability of the old furnace roll replacement process in the high temperature state. In addition, in order to cope with the heat protection and stability required during the placement and replacement process of the high temperature furnace roll, the thickness of the ceramic fiber boards 83 is generally 10 - 20 mm. High temperature adhesives or mechanical fixing methods (such as bolt connection or snap connection, etc.) are used to ensure that the ceramic fiber boards 83 do not fall off in the high temperature environment. The ceramic fiber boards 83 are customized according to the size of the roll changing groove 81 to ensure that the entire upper area of the roll changing groove 81 is covered, reducing the influence of the old furnace roll in the high temperature state on the operators and improving the operation safety.

[0037] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 3 As shown, the pushing mechanism 12 includes a pushing cylinder 121. The pushing cylinder 121 is arranged in the receiving groove 111. The telescopic end of the pushing cylinder 121 is fixedly connected with a mounting plate 122. The annular clamping mechanism 10 is fixedly connected to the mounting plate 122. The second electric slider 7 slides on the electric guide rail 5, driving the new furnace roll placed in the receiving groove 111 on the roll placing seat 11 to move to the position on the annealing furnace where the furnace roll needs to be installed for alignment. The telescopic end of the pushing cylinder 121 is started to drive the mounting plate 122 to move, driving the annular clamping mechanism 10 fixedly connected to the mounting plate 122 to move. The annular clamping mechanism 10 has the same structure as the annular clamping mechanism 10 on the driving mechanism 9. Further, the new furnace roll clamped by the annular clamping mechanism 10 fixedly connected to the mounting plate 122 is driven to move along the receiving groove 111 until the new furnace roll moves to the furnace roll installation position in the annealing furnace.

[0038] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 4As shown, the annular clamping mechanism 10 includes an annular frame body 101. The annular frame body 101 is respectively arranged on the mounting plate 122 and the connecting block 93. Lower arc-shaped limiting plates 102 are arranged at the bottom of the annular frame body 101, and electric push rods 103 are arranged at the upper part of the annular frame body 101. The telescopic ends of the electric push rods 103 are fixedly connected with upper arc-shaped limiting plates 104. The two annular clamping mechanisms 10 with the same structure are respectively installed on the mounting plate 122 and the connecting block 93. During the disassembly process, the electric push rod 103 in the annular clamping mechanism 10 on the connecting block 93 is started, driving the upper arc-shaped limiting plate 104 to move downward to form a clamping area with the lower arc-shaped limiting plate 102, clamping one end of the old furnace roll. During the installation process, the electric push rod 103 in the annular clamping mechanism 10 on the mounting plate 122 is started, driving the upper arc-shaped limiting plate 104 to move downward to form a clamping area with the lower arc-shaped limiting plate 102, which is to clamp one end of the new furnace roll, facilitating its stable movement in the receiving groove 111 and facilitating the installation of the new furnace roll.

[0039] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 4 As shown, high-temperature resistant plates 105 are arranged on both the upper arc-shaped limiting plate 104 and the lower arc-shaped limiting plate 102. The high-temperature resistant plates 105 are alumina ceramic plates. The alumina ceramic plates have high high-temperature resistance and can work for a long time in an environment up to 1600°C. They have high strength and hardness, can resist mechanical stress and wear, have good thermal stability in a high-temperature environment, are not easily deformed or cracked, and can effectively isolate high temperature to protect the metal structures of the upper arc-shaped limiting plate 104 and the lower arc-shaped limiting plate 102 from being damaged by high temperature. Heat conduction is reduced through the heat insulation of the high-temperature resistant plates 105, improving the thermal management ability of the entire roll-changing device and ensuring the stability of the equipment in the high-temperature environment near the annealing furnace during the installation or disassembly of the furnace roll.

[0040] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all belong to the protection scope of the present invention.

Claims

1. A roll-changing device for a continuous annealing furnace, comprising a moving guide rail (1), and a moving platform (2) is slidably connected to the moving guide rail (1), characterized in that, Above the moving platform (2), a lifting cylinder (3) is provided. The telescopic end of the lifting cylinder (3) is provided with a roll-changing platform (4). An electric guide rail (5) is provided on the roll-changing platform (4). A first electric slider (6) and a second electric slider (7) are respectively and slidably connected to the electric guide rail (5); A roll-changing seat (8) is provided on the first electric slider (6). A roll-changing groove (81) is provided inside the roll-changing seat (8). A driving mechanism (9) is provided on the roll-changing seat (8). An annular clamping mechanism (10) is fixedly connected to the driving mechanism (9). The annular clamping mechanism (10) is slidably connected inside the roll-changing groove (81); A roll-releasing seat (11) is provided on the second electric slider (7). A receiving groove (111) is provided inside the roll-releasing seat (11). A pushing mechanism (12) is provided inside the receiving groove (111). An annular clamping mechanism (10) is also fixedly connected to the pushing mechanism (12). The annular clamping mechanism (10) is slidably connected inside the receiving groove (111).

2. The continuous annealing furnace roll changing device according to claim 1, characterized in that, The driving mechanism (9) includes a driving motor (91). The driving motor (91) is provided on one side of the roll-changing seat (8). The output end of the driving motor (91) is fixedly connected with a reciprocating lead screw (92). The reciprocating lead screw (92) is rotatably connected inside the roll-changing seat (8). A connecting block (93) is threadedly connected to the reciprocating lead screw (92). The annular clamping mechanism (10) is fixedly connected to the connecting block (93).

3. The continuous annealing furnace roll changing device according to claim 1, characterized in that, A limiting groove (82) is further provided on one side of the inner wall of the roll-changing groove (81).

4. The continuous annealing furnace roll changing device according to claim 3, characterized in that Ceramic fiber boards (83) are provided on the upper part of the roll-changing groove (81).

5. The continuous annealing furnace roll changing device according to claim 2, characterized in that, The pushing mechanism (12) includes a pushing cylinder (121). The pushing cylinder (121) is provided inside the receiving groove (111). The telescopic end of the pushing cylinder (121) is fixedly connected with a mounting plate (122). The annular clamping mechanism (10) is fixedly connected to the mounting plate (122).

6. The continuous annealing furnace roll changing device according to claim 5, characterized in that, The annular clamping mechanism (10) includes an annular frame body (101). The annular frame bodies (101) are respectively provided on the mounting plate (122) and the connecting block (93). Lower arc-shaped limiting plates (102) are provided at the bottoms of the annular frame bodies (101). Electric push rods (103) are provided at the upper parts of the annular frame bodies (101). The telescopic ends of the electric push rods (103) are fixedly connected with upper arc-shaped limiting plates (104).

7. The continuous annealing furnace roll changing device according to claim 6, characterized in that High-temperature resistant plates (105) are provided on both the upper arc-shaped limiting plate (104) and the lower arc-shaped limiting plate (102). The high-temperature resistant plates (105) are alumina ceramic plates.

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