Metallurgical furnace bottom roller convenient to install and maintain
By splitting the furnace bottom roller into adjustable parts, the problem of difficult installation and maintenance of the existing furnace bottom roller is solved, and more efficient repair and replacement is achieved, avoiding equipment damage.
Patent Information
- Application Number
- CN202421305193.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-11
AI Technical Summary
The integrated structure of the existing furnace bottom rollers leads to difficulties in installation and maintenance, requiring the removal of the roller shaft and transmission frame, increasing the workload and risk of damage to the equipment.
The furnace bottom roller is split into different parts and through the design of bolts and adjustment rods, the roller shaft can be adjusted and contracted during installation and disassembly, so that the furnace bottom roller is removed without the need to disassemble the conveyor rack.
Reduce the workload of repair and replacement, improve efficiency, avoid equipment damage, and ensure the original accuracy of the equipment.
Smart Images
Figure CN222598493U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of furnace bottom rollers, in particular to a metallurgical furnace bottom roller which is easy to install and maintain. Background Art
[0002] In the manufacturing equipment of metal sheets, especially in the ironmaking process production line, when the conveyor rollers are rotated at high speed to allow the steel plates to pass, the steel plates will slide, meander, and dust will adhere to or slag on the surface of the conveyor rollers. Especially in the hearth rollers used in continuous annealing furnaces, slag is easily formed on the surface of the hearth rollers because the steel plates are conveyed at high temperatures. The damage to the hearth rollers after long-term use is relatively serious. In order to ensure the normal use of the hearth rollers and the smooth passage of the steel plates, it is necessary to regularly maintain or clean the hearth rollers, or replace the damaged hearth rollers.
[0003] The existing furnace bottom rollers are mostly integrated structures, usually composed of a roller shaft and a roller belly installed on the roller shaft. During installation, the roller shaft is usually fixedly connected to the transmission frame, which means that when the furnace bottom roller is repaired or replaced, the roller shaft needs to be removed from the transmission frame, which also requires the transmission frame to be disassembled, thereby triggering a series of disassembly and installation work, which not only increases the maintenance workload and reduces the maintenance and replacement efficiency, but also the disassembly and reinstallation operations are likely to cause damage to the equipment and reduce the original accuracy of the equipment operation. Therefore, in response to the above technical problems, the present application proposes a metallurgical furnace bottom roller that is easy to install and maintain. Utility Model Content
[0004] The utility model aims to provide a metallurgical furnace bottom roller which is easy to install and maintain. The furnace bottom roller is split into different component structures, and the components can be adjusted as needed during installation and disassembly, so that installation and disassembly are convenient and only the corresponding furnace bottom roller needs to be disassembled. There is no need to disassemble the transmission frame and other equipment, thereby reducing labor, improving maintenance efficiency, ensuring the original operation accuracy of the equipment, and reducing damage to the equipment.
[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:
[0006] The utility model discloses a furnace bottom roller for metallurgy which is easy to install and maintain, comprising a belly roller and roller shafts installed at both ends of the belly roller, the interior of the belly roller is a cylindrical installation cavity coaxial with the belly roller, both ends of the belly roller are fixed with end covers by bolts, and a plurality of support frames are fixed at equal distances inside the belly roller along the axial direction.
[0007] The roller shaft passes through the end cover and extends to the inside of the belly roller. The end of the roller shaft located inside the belly roller is sleeved with a support plate with the same diameter as the inner cavity of the belly roller, and the end of the roller shaft located outside the belly roller is clamped with a mounting sleeve; an externally threaded adjustment rod and a guide rod pass through the end cover, and the ends of the externally threaded adjustment rod and the guide rod located inside the belly roller pass through the support plate and the support frame in turn.
[0008] The external threaded adjustment rod is threadedly connected to the support plate, and the external threaded adjustment rod is rotatably connected to the end cover and the support frame. One end of the external threaded adjustment rod passing through the support frame is threadedly connected to a first nut, and one end of the external threaded adjustment rod passing through the end cover is provided with a rotating hand wheel.
[0009] As a preferred technical solution of the utility model, the end cover and the support plate are both provided with an axial hole at the center thereof for passing the roller shaft, and a bearing having an inner hole matching the roller shaft and sleeved on the roller shaft is installed inside the axial hole.
[0010] As a preferred technical solution of the utility model, the end of the roller shaft located outside the belly roller is provided with a hexagonal connecting column that cooperates with the mounting sleeve, and the end of the roller shaft located inside the belly roller is fixed with a limit plate whose surface is pressed against the bearing.
[0011] As a preferred technical solution of the utility model, the end cover and one surface of the support plate are both provided with mounting grooves matched with the bearing, and the axial hole is coaxially arranged with the mounting groove.
[0012] As a preferred technical solution of the utility model, the guide rod is located on the outer circular surface of one end outside the belly roller and on the outer circular surface of one end of the guide rod passing through the support frame, both of which are threadedly connected with a second nut. The guide rod is slidably connected to the support plate, and the support plate is provided with a through hole that cooperates with the guide rod and an internal threaded hole that cooperates with the external threaded adjustment rod.
[0013] As a preferred technical solution of the utility model, the upper layer of the two end surfaces of the belly roller with end covers are provided with bolt holes equidistantly arranged in annular shapes, the end covers are provided with mounting holes matching the bolts equidistantly arranged in annular shapes, and the end covers are provided with a first through hole for passing the external threaded adjustment rod and the guide rod.
[0014] As a preferred technical solution of the utility model, the mounting sleeve includes a connecting sleeve, one end face of which is provided with a hexagonal nut hole that cooperates with the hexagonal connecting column, and the other end face of the connecting sleeve is fixed with a mounting roller with the same diameter as the roller shaft.
[0015] As a preferred technical solution of the utility model, a limiting sleeve cooperating with the roller shaft is fixed to the end face of the end cover away from the belly roller, a fastening bolt passes through the outer circumferential surface of the limiting sleeve, and the limiting sleeve is coaxial with the shaft hole.
[0016] As a preferred technical solution of the utility model, one end of the fastening bolt located inside the limiting sleeve is pressed against the outer circumferential surface of the roller shaft, and the fastening bolt is threadedly connected to the limiting sleeve.
[0017] As a preferred technical solution of the utility model, the support frame includes a support ring welded to the inner wall of the belly roller, and second through holes cooperating with the threaded adjustment rod and the guide rod are equidistantly opened in an annular shape on the support ring near the two ends of the belly roller, and a number of support rods extending to the axis center are fixed in an annular shape equidistantly on the inner circular surface of the support ring.
[0018] The utility model has the following beneficial effects:
[0019] 1. The utility model uses mounting sleeves at both ends of the roller shaft to connect with the transmission frame, and sets the roller shafts at both ends of the belly roller to be able to shrink toward the inside of the belly roller under adjustment. When disassembly is required, the furnace bottom roller composed of the roller shaft and the belly roller can be disassembled from the transmission frame only by shrinking the roller shaft so that the roller shaft and the mounting sleeve are out of contact. There is no need to disassemble the transmission frame, which reduces the workload and improves the maintenance efficiency. At the same time, it avoids the damage to the original equipment caused by the disassembly and ensures the original accuracy of the equipment during operation.
[0020] 2. The utility model fixes the roller shaft and the end cover together by means of a fastening bolt which penetrates a limiting sleeve. When the roller shaft rotates, the end cover rotates accordingly, thereby causing the belly roller fixed to the end cover by the bolt to rotate. When the belly roller is not required to rotate together with the roller shaft, it is only necessary to rotate the fastening bolt to release the tightness of the bottom end of the fastening bolt on the roller shaft, and the utility model can be flexibly switched according to needs.
[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0023] Figure 1 The utility model is a structural schematic diagram of a metallurgical furnace bottom roller which is easy to install and maintain.
[0024] Figure 2 It is a structural schematic diagram of the left view of the utility model.
[0025] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.
[0026] Figure 4 It is a structural schematic diagram of the structure at both ends of the belly roller of the utility model.
[0027] Figure 5 for Figure 4 Schematic diagram of the structure from another perspective.
[0028] Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure.
[0029] Figure 7 It is a structural schematic diagram of the end cover, limiting sleeve and fastening bolts.
[0030] Figure 8 for Figure 7 Schematic diagram of the structure from another perspective.
[0031] Fig. 9 It is a structural schematic diagram of the support plate and the internal threaded hole.
[0032] Fig.10 for Fig. 9 Schematic diagram of the structure from another perspective.
[0033] Fig.11 It is a schematic diagram of the structure of the roller.
[0034] Fig.12 This is a schematic diagram of the structure for installing the sleeve.
[0035] Fig.13 It is a schematic diagram of the structure of the belly roller, support frame and bolt holes.
[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0037] 1-belly roller, 2-roller shaft, 3-bolt, 4-end cover, 5-support frame, 6-support plate, 7-installing sleeve, 8-external thread adjustment rod, 9-guide rod, 10-first nut, 11-turning hand wheel, 12-shaft hole, 13-bearing, 14-installing groove, 15-second nut, 16-through hole, 17-inner thread hole, 18-bolt hole, 19-installing hole, 20-limiting sleeve, 21-fastening bolt, 22-first through hole, 201-hexagonal connecting column, 202-limiting plate, 701-connecting sleeve, 702-inner hexagonal nut hole, 703-installing roller. DETAILED DESCRIPTION
[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment one:
[0040] See also Figure 1-13 As shown, the utility model is a metallurgical furnace bottom roller which is easy to install and maintain, comprising a belly roller 1 and a roller shaft 2 installed at both ends of the belly roller 1, the interior of the belly roller 1 is a cylindrical installation cavity coaxial with the belly roller 1, both ends of the belly roller 1 are fixed with end covers 4 by bolts 3, and a plurality of support frames 5 are fixed at equal distances inside the belly roller 1 along the axial direction; the roller shaft 2 penetrates the end cover 4 and extends to the inside of the belly roller 1, and one end of the roller shaft 2 located inside the belly roller 1 is sleeved with a support plate 6 with the same diameter as the inner cavity of the belly roller 1, and one end of the roller shaft 2 located outside the belly roller 1 is clamped with a mounting sleeve 7.
[0041] An externally threaded adjusting rod 8 and a guide rod 9 are passed through the end cover 4. The ends of the externally threaded adjusting rod 8 and the guide rod 9 located inside the belly roller 1 pass through the support plate 6 and the support frame 5 in sequence; the externally threaded adjusting rod 8 is threadedly connected to the support plate 6, and the externally threaded adjusting rod 8 is rotatably connected to the end cover 4 and the support frame 5. One end of the externally threaded adjusting rod 8 passing through the support frame 5 is threadedly connected to a first nut 10, and one end of the externally threaded adjusting rod 8 passing through the end cover 4 is provided with a rotating handwheel 11; an axial hole 12 for passing the roller shaft 2 is opened at the center of the circle of the end cover 4 and the support plate 6, and a bearing 13 whose inner hole matches the roller shaft 2 and is sleeved on the roller shaft 2 is installed inside the axial hole 12.
[0042] The end of the roller shaft 2 located outside the belly roller 1 is provided with a hexagonal connecting column 201 that cooperates with the mounting sleeve 7, and the end of the roller shaft 2 located inside the belly roller 1 is fixed with a limiting plate 202 whose surface is tightly pressed against the bearing 13.
[0043] A mounting groove 14 cooperating with the bearing 13 is formed on one surface of the end cover 4 and the support plate 6 , and the shaft hole 12 is coaxially arranged with the mounting groove 14 .
[0044] A second nut 15 is threadedly connected on the outer circumferential surface of one end of the guide rod 9 located outside the belly roller 1 and on the outer circumferential surface of one end of the guide rod 9 passing through the support frame 5. The guide rod 9 is slidably connected to the support plate 6. The support plate 6 is provided with a through hole 16 that cooperates with the guide rod 9 and an internal threaded hole 17 that cooperates with the external threaded adjustment rod 8.
[0045] Bolt holes 18 are equidistantly provided in annular shapes on the upper surfaces of both ends of the belly roller 1 where the end covers 4 are installed. Mounting holes 19 cooperating with the bolts 3 are equidistantly provided in annular shapes on the end covers 4.
[0046] See also Figure 3 , 13 As shown, the support frame 5 includes a support ring welded to the inner wall of the belly roller 1, and second through holes cooperating with the threaded adjustment rod 8 and the guide rod 9 are equidistantly provided in an annular shape on the support ring near the two ends of the belly roller 1, and a plurality of support rods extending to the axis center are equidistantly fixed in an annular shape on the inner circular surface of the support ring.
[0047] A specific application of this embodiment is: during installation and use, the installation roller in the installation sleeve 7 is fixedly connected to an external transmission frame and other equipment. When the furnace bottom roller needs to be disassembled, first, the fastening bolt 21 is loosened to release the restriction of the fastening bolt 21 on the roller shaft 2, and the external threaded adjustment rod 8 is driven to rotate by rotating the hand wheel 11. The external threaded adjustment rod 8 drives the support plate 6 to further move toward the inside of the belly roller. While the support plate 6 moves, it drives the roller shaft 2 passing through the support plate 6 to move in the same direction, so that the roller shaft 2 passes through the end cover 4 and is located at the belly roller. Move toward the inside of the belly roller, so that a section of the roller shaft 1 with a hexagonal connecting column 201 is gradually moved out of the inner hexagonal nut hole 702 in the connecting sleeve 701, so that the hexagonal connecting column 201 is separated from the restriction of the inner hexagonal nut hole 702 in the connecting sleeve 701. At this time, the furnace bottom roller can be completely removed from the equipment without disassembling the equipment, thereby improving work efficiency, reducing labor intensity, and improving maintenance convenience.
[0048] When the furnace bottom roller needs to be installed, it is only necessary to align the roller shaft 2 with the installation sleeve 7, and then rotate the hand wheel 11 in the reverse direction so that the hexagonal connecting column 201 on the roller shaft 2 extends into the hexagonal nut hole 702, and finally tighten the fastening bolt 21 so that the fastening bolt 21 locks the roller shaft 2. Specific embodiment 2:
[0050] Based on the specific embodiment 1, the difference of this embodiment is that:
[0051] like Figure 1-7 As shown, a limiting sleeve 20 cooperating with the roller shaft 2 is fixed to one end face of the end cover 4 away from the belly roller 1, and a fastening bolt 21 passes through the outer circumferential surface of the limiting sleeve 20, and the limiting sleeve 20 is coaxial with the shaft hole 12. One end of the fastening bolt 21 located inside the limiting sleeve 20 is pressed against the outer circumferential surface of the roller shaft 2, and the fastening bolt 21 is threadedly connected with the limiting sleeve 20. The roller shaft 2 and the end cover 4 are fixed together by the fastening bolt 21 passing through the limiting sleeve 20, and when the roller shaft 2 rotates, the end cover 4 rotates accordingly, thereby causing the belly roller 1 fixed to the end cover 4 by the bolts to rotate. When the belly roller 1 is not required to rotate with the roller shaft 2, it is only necessary to rotate the fastening bolt 21 to release the tightness of the bottom end of the fastening bolt 21 against the roller shaft 2. Specific embodiment three:
[0053] Based on the second specific embodiment, the difference of this embodiment is that:
[0054] like Figure 1-6 As shown in Figures 1 and 2, the mounting sleeve 7 includes a connecting sleeve 701, one end face of which is provided with a hexagonal nut hole 702 that matches the hexagonal connecting column 201, and the other end face of the connecting sleeve 701 is fixed with a mounting roller 703 having the same diameter as the roller shaft 2. The mounting roller 703 is connected to the equipment for driving or transmission, and drives the roller shaft 2 connected to the connecting sleeve 701 to rotate. When disassembly is required, the roller shaft 2 only needs to be retracted toward the belly roller 1 so that one end of the roller shaft 2 is separated from the connecting sleeve 701, and the furnace bottom roller can be disassembled without disassembling the entire equipment, which is simple and convenient to operate, and improves the efficiency of maintenance and replacement.
[0055] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. 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 can be combined in any one or more embodiments or examples in a suitable manner.
[0056] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A metallurgical furnace bottom roller that is easy to install and maintain, comprising a belly roller (1) and a roller shaft (2) installed at both ends of the belly roller (1), wherein the interior of the belly roller (1) is a cylindrical installation cavity coaxial with the belly roller (1), characterized in that: Both ends of the belly roller (1) are fixed with end covers (4) by bolts (3), and a plurality of support frames (5) are fixed at equal intervals inside the belly roller (1) along the axial direction; The roller shaft (2) passes through the end cover (4) and extends to the inside of the belly roller (1); one end of the roller shaft (2) located inside the belly roller (1) is sleeved with a support plate (6) having the same diameter as the inner cavity of the belly roller (1); and one end of the roller shaft (2) located outside the belly roller (1) is clamped with a mounting sleeve (7); The end cover (4) is penetrated by an externally threaded adjustment rod (8) and a guide rod (9); one end of the externally threaded adjustment rod (8) and the guide rod (9) located inside the belly roller (1) penetrates the support plate (6) and the support frame (5) in sequence; The externally threaded adjustment rod (8) is threadedly connected to the support plate (6), and the externally threaded adjustment rod (8) is rotatably connected to the end cover (4) and the support frame (5). One end of the externally threaded adjustment rod (8) that passes through the support frame (5) is threadedly connected to a first nut (10), and one end of the externally threaded adjustment rod (8) that passes through the end cover (4) is provided with a rotating hand wheel (11).
2. A metallurgical furnace bottom roller that is easy to install and maintain according to claim 1, characterized in that: The end cover (4) and the support plate (6) are both provided with an axial hole (12) for passing the roller shaft (2) at the center of the circle, and a bearing (13) whose inner hole matches the roller shaft (2) and is sleeved on the roller shaft (2) is installed inside the axial hole (12).
3. A metallurgical furnace bottom roller that is easy to install and maintain according to claim 2, characterized in that: The end of the roller shaft (2) located outside the belly roller (1) is provided with a hexagonal connecting column (201) that cooperates with the mounting sleeve (7), and the end of the roller shaft (2) located inside the belly roller (1) is fixed with a limiting plate (202) whose surface is pressed against the bearing (13).
4. The metallurgical furnace bottom roller that is easy to install and maintain according to claim 2 is characterized in that: The end cover (4) and the support plate (6) are both provided with a mounting groove (14) matched with the bearing (13) on one surface, and the shaft hole (12) and the mounting groove (14) are arranged coaxially.
5. The metallurgical furnace bottom roller that is easy to install and maintain according to claim 1 is characterized in that: The guide rod (9) is threadedly connected to the outer circumferential surface of one end outside the belly roller (1) and the outer circumferential surface of one end of the guide rod (9) penetrating the support frame (5). The guide rod (9) is slidably connected to the support plate (6). The support plate (6) is provided with a through hole (16) cooperating with the guide rod (9) and an internal thread hole (17) cooperating with the external thread adjustment rod (8).
6. The metallurgical furnace bottom roller that is easy to install and maintain according to claim 1 is characterized in that: The upper ends of the two end surfaces of the belly roller (1) are provided with bolt holes (18) at equal intervals in an annular shape, the end cover (4) is provided with mounting holes (19) matching with the bolts (3) at equal intervals in an annular shape, and the end cover (4) is provided with a first through hole (22) for passing the external threaded adjustment rod (8) and the guide rod (9).
7. The metallurgical furnace bottom roller that is easy to install and maintain according to claim 1 is characterized in that: The mounting sleeve (7) comprises a connecting sleeve (701), one end surface of which is provided with a hexagonal nut hole (702) that matches the hexagonal connecting column (201), and the other end surface of which is fixed with a mounting roller (703) having the same diameter as the roller shaft (2).
8. The metallurgical furnace bottom roller that is easy to install and maintain according to claim 1 is characterized in that: A limiting sleeve (20) cooperating with the roller shaft (2) is fixed to one end face of the end cover (4) away from the belly roller (1), a fastening bolt (21) passes through the outer circumferential surface of the limiting sleeve (20), and the limiting sleeve (20) is coaxial with the shaft hole (12).
9. The metallurgical furnace bottom roller that is easy to install and maintain according to claim 8, characterized in that: One end of the fastening bolt (21) located inside the limiting sleeve (20) is pressed against the outer circumferential surface of the roller shaft (2), and the fastening bolt (21) is threadedly connected to the limiting sleeve (20).
10. The metallurgical furnace bottom roller that is easy to install and maintain according to claim 1, characterized in that: The support frame (5) comprises a support ring welded to the inner wall of the belly roller (1), and second through holes cooperating with the threaded adjustment rod (8) and the guide rod (9) are equidistantly provided in an annular shape on the support ring near the two ends of the belly roller (1), and a plurality of support rods extending to the axis are equidistantly fixed in an annular shape on the inner circumference of the support ring.