Roll changing device

Abstract

The utility model relates to the technical field of roller hearth type heat treatment furnace maintenance, in particular to a roller replacing device which comprises a bracket and an adjusting frame detachably connected with the bracket. And the bracket lifts the furnace bottom roller to be replaced, and the adjusting frame drives the bracket to ascend and descend. The furnace bottom roller replacing device has the advantages that a convenient and effective replacing tool is provided for a user to stop production and replace the furnace bottom roller, the working efficiency can be improved, and meanwhile the working safety of personnel is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of roller hearth heat treatment furnace maintenance, and in particular to a roller changing device. Background Art

[0002] The roller-hearth heat treatment furnace is an important part of the steel rolling process. It processes the medium-temperature tempering and low-temperature tempering of steel billets. The steel plates are heated and kept warm in the heat treatment furnace to complete the heat treatment process, thereby improving the various performance indicators of the steel plates. According to different heat treatment processes and steel plate specifications, the steel plates are operated continuously or oscillatingly in the furnace to meet the heat treatment time of the steel plates. When the corresponding heat treatment temperature and time requirements are reached, the steel plates are quickly taken out of the furnace; they are sent to the cooling bed for cooling after passing through the output roller of the heat treatment furnace.

[0003] The roller bottom heat treatment furnace has evenly distributed bottom rollers in the furnace. The rotation of the bottom rollers drives the steel billet to move in the furnace, realizing the heating process in the furnace. At the same time, the bottom rollers run at the process speed given by the PLC. The process speed of the steel plate depends on the thickness of the steel plate and the heat treatment system of the corresponding steel grade.

[0004] The replacement of furnace bottom rollers is an important part of shutdown and maintenance. Usually, the severely worn ones are replaced when the heat treatment furnace is shut down for maintenance. The replacement method is to use scaffolding and fall chain to replace them. Because each furnace bottom roller is very heavy, replacement is very inconvenient and dangerous. Utility Model Content

[0005] The present application provides a roller changing device to provide a convenient and effective replacement tool for users to replace furnace bottom rollers when they stop production, which can improve work efficiency while ensuring the work safety of personnel.

[0006] The present application provides a roller changing device, which adopts the following technical solution:

[0007] A roller changing device comprises a bracket and an adjusting frame detachably connected to the bracket; the bracket lifts a furnace bottom roller to be replaced, and the adjusting frame drives the bracket to rise and fall.

[0008] By adopting the above technical solution, the bracket is used to lift the furnace bottom roller to be replaced, the adjustment frame is placed on the furnace bottom rollers on both sides of the furnace bottom roller to be replaced, and then the height of the bracket is adjusted by the adjustment frame, so that the bracket lifts the furnace bottom roller to be replaced and lifts the furnace bottom roller to be replaced. The staff pulls out the furnace bottom roller to be replaced from the bracket, and the bracket always supports the furnace bottom roller to be replaced, so that the furnace bottom roller to be replaced is always in the same plane when it is pulled out, reducing the fall caused by the gravity of the furnace bottom roller itself, making the furnace bottom roller more stable when it is pulled out, so that it is more convenient to replace the furnace bottom roller.

[0009] To further implement the present application in a better manner, the following configuration structure is particularly adopted: the bracket includes a support plate and two connecting plates;

[0010] The support plate is arranged horizontally and is used to place the furnace bottom rollers. The two connecting plates are arranged in parallel and vertically to the support plate.

[0011] By adopting the above technical solution, when the furnace bottom roller is arranged on the bracket, the support plate supports the furnace bottom roller, and the connecting plates on both sides of the support plate can also block the furnace bottom roller, so that the furnace bottom roller can be stably arranged on the bracket to prevent the furnace bottom roller from falling.

[0012] In order to better realize the present application, the following setting structure is particularly adopted: the support plate and the connecting plate are detachably connected.

[0013] By adopting the above technical solution, it is convenient to connect the supporting plate and the connecting plate.

[0014] In order to better realize the present application, the following setting structure is particularly adopted: a movable component is arranged on the pallet, and the movable component includes two support plates arranged on the pallet, the upper side of the support plate is an inclined surface, and the inclined surfaces of the two support plates are arranged on the same side, and the inclined surfaces on the two support plates form a bracket type.

[0015] By adopting the above technical solution, when the furnace bottom roller falls on the support plate, the furnace bottom roller will contact the moving component, so that the furnace bottom roller is arranged between two support plates. The two support plates limit the lateral movement of the furnace bottom roller, making the furnace bottom roller arrangement more stable.

[0016] In order to better realize the present application, the following setting structure is particularly adopted: a U-shaped plate is fixedly connected to the support plate, a roller is installed on the U-shaped plate, and the roller is rotatably connected to the U-shaped plate; the installation position of the U-shaped plate is located on the inclined surface of the support plate, and the rotation direction of the rollers on the two support plates is the same.

[0017] By adopting the above technical solution, the furnace bottom roller will contact with the roller installed on the U-shaped plate. When the furnace bottom roller is removed, the roller converts the sliding friction between the furnace bottom roller and the support plate into rolling friction between the furnace bottom roller and the roller, thereby conveniently and labor-savingly removing the furnace bottom roller from the support plate.

[0018] In order to better realize the present application, the following setting structure is particularly adopted: the moving component also includes a mounting plate, the support plate is fixedly connected to the mounting plate, and the mounting plate is detachably connected to the support plate.

[0019] By adopting the above technical solution, it is convenient to install the mobile component on the pallet.

[0020] To further implement the present application, the following configuration is particularly adopted: the adjustment frame comprises an I-beam connected to the bracket, two fixing plates are mounted on the I-beam, the two fixing plates are arranged on both sides of the two connecting plates, an adjusting screw is passed through the I-beam, and the adjusting screw is threadedly connected to the I-beam and the fixing plate;

[0021] The adjusting screw has a screw thread direction opposite to that between the I-beam and the fixing plate.

[0022] By adopting the above technical solution, when the roller changing device is arranged on the furnace bottom roller to be replaced, the bracket is first arranged on the lower side of the furnace bottom roller, and the furnace bottom roller falls on the bracket. Then the bracket is connected with the adjustment frame. The adjustment screw is adjusted so that the I-beam and the fixing plate connected with the adjustment screw are separated from each other. As the distance between the I-beam and the fixing plate increases, the bracket is gradually raised, thereby lifting the furnace bottom roller to be replaced, so that there is a height difference between the furnace bottom roller to be replaced and other furnace bottom rollers, and when the furnace bottom roller is removed, other furnace bottom rollers will not interfere with the removal work.

[0023] In order to better implement the present application, the following configuration structure is particularly adopted: the fixing plate is U-shaped as a whole.

[0024] By adopting the above technical solution, the fixing plate can be conveniently buckled on the furnace bottom roller and contact the furnace bottom roller, thereby preventing the position of the adjustment frame from deviating, thereby facilitating the alignment of the moving component with the furnace bottom roller to be replaced.

[0025] In order to better realize the present application, the following setting structure is particularly adopted: an arc plate is fixedly connected to the lower side of the fixed plate, and the arc plate has the same curvature as the surface of the furnace bottom roller.

[0026] By adopting the above technical solution, the contact between the fixed plate and the furnace bottom roller is made closer.

[0027] In order to better realize the present application, the following setting structure is particularly adopted: a reinforcing nut is fixedly connected to the I-beam, and the reinforcing nut is sleeved on the adjusting screw.

[0028] By adopting the above technical solution, the row spacing of the adjusting screws is increased, so that the adjusting frame can be electrically raised to a larger range.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. The bracket always supports the furnace bottom roller to be replaced, so that the furnace bottom roller to be replaced is always in the same plane when it is pulled out, reducing the fall caused by the gravity of the furnace bottom roller itself, making the furnace bottom roller more stable when it is pulled out, thereby making it more convenient to replace the furnace bottom roller;

[0031] 2. When the hearth roller is removed, the roller converts the sliding friction between the hearth roller and the support plate into rolling friction between the hearth roller and the roller, thereby conveniently and labor-savingly removing the hearth roller from the support plate;

[0032] 3. The bracket can be easily raised by setting an adjustment frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of a roller changing device in this embodiment;

[0034] Figure 2 is a schematic diagram of the bracket and the moving assembly in this embodiment;

[0035] Figure 3 Schematic diagram of the adjustment frame in this embodiment.

[0036] Explanation of the reference numerals: 1. bracket; 11. support plate; 12. connecting plate; 2. adjusting frame; 21. I-beam; 22. fixing plate; 23. adjusting screw; 24. arc plate; 25. reinforcing nut; 3. moving assembly; 31. mounting plate; 32. support plate; 33. U-shaped plate; 34. roller; 35. rotating shaft. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present invention and the features in each embodiment may be combined with each other without conflict.

[0039] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0042] The present application embodiment discloses a roller changing device. Figure 1 The roller changing device includes a bracket 1 and an adjustment frame 2 detachably connected to the bracket 1. The bracket 1 is used to lift the furnace bottom roller to be replaced, and the adjustment frame 2 is placed on the furnace bottom rollers on both sides of the furnace bottom roller to be replaced. Then, the height of the bracket 1 is adjusted by the adjustment frame 2, so that the bracket 1 lifts the furnace bottom roller to be replaced and lifts the furnace bottom roller to be replaced. The staff pulls out the furnace bottom roller to be replaced from the bracket 1, and the bracket 1 always supports the furnace bottom roller to be replaced, so that the furnace bottom roller to be replaced is always in the same plane when it is pulled out, reducing the fall caused by the gravity of the furnace bottom roller itself, making the furnace bottom roller more stable when it is pulled out, thereby making it more convenient to replace the furnace bottom roller.

[0043] Reference Figure 2 The bracket 1 includes a support plate 11 and a connecting plate 12. The support plate 11 is arranged horizontally and is used to place the furnace bottom roller. Two connecting plates 12 are provided, and the two connecting plates 12 are arranged in parallel and vertically with the support plate 11. The connecting plates 12 and the support plate 11 are connected together by bolts. When the furnace bottom roller is arranged on the bracket 1, the support plate 11 holds up the furnace bottom roller, and the connecting plates 12 on both sides of the support plate 11 can also block the furnace bottom roller, so that the furnace bottom roller can be stably arranged on the bracket 1 to prevent the furnace bottom roller from falling.

[0044] A moving assembly 3 is also installed on the support plate 11 , and the moving assembly 3 converts the sliding friction between the hearth roller and the support plate 11 into rolling friction, so as to facilitate the removal of the hearth roller from the support plate 11 .

[0045] The moving assembly 3 includes a mounting plate 31 fixedly connected to the support plate 11, the mounting plate 31 is arranged parallel to the support plate 11, and the mounting plate 31 and the support plate 11 are fixedly connected by bolts. Two support plates 32 are fixedly connected to the mounting plate 31, the upper side of the support plate 32 is an inclined surface, and the inclined surfaces of the two support plates 32 are arranged on the same side, so that the inclined surfaces on the two support plates 32 form a bracket shape.

[0046] A U-shaped plate 33 is fixedly connected to the support plate 32, and a roller 34 is installed on the U-shaped plate 33, and the roller 34 is rotatably connected to the U-shaped plate 33. Specifically, a rotating shaft 35 is passed through the U-shaped plate 33, and the rotating shaft 35 is fixedly connected to the U-shaped plate 33. The roller 34 is sleeved on the rotating shaft 35. The U-shaped plate 33 is installed on the inclined surface of the support plate 32, and the rotation directions of the rollers 34 on the two support plates 32 are the same.

[0047] When the furnace bottom roller falls on the support plate 11, the furnace bottom roller will contact with the moving component 3, so that the furnace bottom roller is arranged between the two support plates 32. The two support plates 32 limit the lateral movement of the furnace bottom roller, so that the furnace bottom roller is arranged more stably, and the furnace bottom roller will contact with the roller 34 installed on the U-shaped plate 33. Then, when the furnace bottom roller is removed, the roller 34 converts the sliding friction between the furnace bottom roller and the support plate 11 into the rolling friction between the furnace bottom roller and the roller 34, so that the furnace bottom roller can be removed from the support plate 11 conveniently and labor-savingly.

[0048] Reference Figure 3 The adjustment frame 2 includes an I-beam 21 connected to the bracket 1, and the lower side of the I-beam 21 is fixedly connected to the connecting plate 12 by bolts. The length of the I-beam 21 is greater than the spacing between the two connecting plates 12. Two fixing plates 22 are installed on the I-beam 21, and the two fixing plates 22 are arranged on both sides of the two connecting plates 12. An adjusting screw 23 is passed through the I-beam 21, and the adjusting screw 23 is threadedly connected with the I-beam 21 and the fixing plate 22. Among them, the adjusting screw 23 has an opposite thread rotation direction to the thread between the I-beam 21 and the fixing plate 22, so that the adjusting screw 23 can drive the I-beam 21 and the fixing plate 22 to move closer to or away from each other when rotating.

[0049] The implementation principle of a roller changing device in the embodiment of the present application is as follows: when the roller changing device is arranged on the furnace bottom roller to be replaced, the bracket 1 is first arranged on the lower side of the furnace bottom roller, and the furnace bottom roller is placed on the support plate 11. Then the bracket 1 is connected with the adjustment frame 2. The adjusting screw 23 is adjusted so that the I-beam 21 and the fixing plate 22 threadedly connected with the adjusting screw 23 are moved away from each other. As the distance between the I-beam 21 and the fixing plate 22 increases, the bracket 1 is gradually raised, thereby lifting the furnace bottom roller to be replaced, so that there is a height difference between the furnace bottom roller to be replaced and other furnace bottom rollers, and when the furnace bottom roller is removed, other furnace bottom rollers will not interfere with the removal work.

[0050] In addition, the fixing plate 22 is U-shaped as a whole, which can facilitate the fixing plate 22 to be buckled on the furnace bottom roller and contact the furnace bottom roller, prevent the position of the adjustment frame 2 from deviating, and facilitate the alignment of the moving component 3 with the furnace bottom roller to be replaced. An arc plate 24 is fixedly connected to the lower side of the fixing plate 22, and the arc plate 24 has the same curvature as the surface of the furnace bottom roller, so that the contact between the fixing plate 22 and the furnace bottom roller is tighter.

[0051] A reinforcing nut 25 may also be fixedly connected to the I-beam 21 , and the reinforcing nut 25 is sleeved on the adjusting screw 23 to increase the row spacing of the adjusting screw 23 , so that the adjusting frame 2 can be raised to a larger range of the electric bracket 1 .

[0052] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0053] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0054] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A roller changing device, characterized in that: It comprises a bracket (1) and an adjustment frame (2) detachably connected to the bracket (1); the bracket (1) lifts the furnace bottom roller to be replaced, and the adjustment frame (2) drives the bracket (1) to rise and fall; The bracket (1) comprises a support plate (11) and two connecting plates (12); The support plate (11) is arranged horizontally, and is used to place the furnace bottom roller on the support plate (11); the two connecting plates (12) are arranged in parallel and vertically to the support plate (11); The adjustment frame (2) comprises an I-beam (21) connected to the bracket (1), two fixing plates (22) are installed on the I-beam (21), the two fixing plates (22) are arranged on both sides of the two connecting plates (12), and an adjustment screw (23) is passed through the I-beam (21), and the adjustment screw (23) is threadedly connected to the I-beam (21) and the fixing plate (22); The adjusting screw (23) has a thread direction opposite to that between the I-beam (21) and the fixing plate (22); The lower side of the fixed plate (22) is fixedly connected with an arc plate (24), and the arc plate (24) has the same curvature as the surface of the furnace bottom roller.

2. The roller changing device according to claim 1, characterized in that: The support plate (11) and the connecting plate (12) are detachably connected.

3. The roller changing device according to claim 1, characterized in that: The support plate (11) is provided with a moving assembly (3), the moving assembly (3) comprising two support plates (32) arranged on the support plate (11), the upper side of the support plates (32) being an inclined surface, and the inclined surfaces of the two support plates (32) being arranged on the same side, and the inclined surfaces on the two support plates (32) forming a bracket shape.

4. The roller changing device according to claim 3 is characterized in that: The support plate (32) is fixedly connected to a U-shaped plate (33), the U-shaped plate (33) is mounted with a roller (34), and the roller (34) is rotatably connected to the U-shaped plate (33); the U-shaped plate (33) is mounted on the inclined surface of the support plate (32), and the rotation directions of the rollers (34) on the two support plates (32) are the same.

5. The roller changing device according to claim 4, characterized in that: The moving assembly (3) further comprises a mounting plate (31), the support plate (32) being fixedly connected to the mounting plate (31), and the mounting plate (31) being detachably connected to the support plate (11).

6. The roller changing device according to claim 1, characterized in that: The fixing plate (22) is U-shaped as a whole.

7. The roller changing device according to claim 1, characterized in that: A reinforcing nut (25) is fixedly connected to the I-beam (21), and the reinforcing nut (25) is sleeved on the adjusting screw (23).

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