Quick and easy-to-assemble / disassemble gap bridge device in dephosphorization box

Abstract

The utility model relates to a gap bridge device fast and easy to disassemble and assemble in a dephosphorization box, and belongs to the technical field of metallurgical industry equipment. According to the technical scheme, a cross beam (1) and a longitudinal beam (2) are mounted between adjacent roller ways (6) in a dephosphorization box body (8), and high-pressure dephosphorization headers (7) are arranged on the outer sides of the roller ways; a plurality of cross beams and a plurality of longitudinal beams are arranged, and the plurality of longitudinal beams are arranged in parallel and are perpendicular to the cross beams; notches (10) are formed in the bottoms of the longitudinal beams, the number of the notches in each longitudinal beam is the same as that of the cross beams, and the cross beams are arranged in the notches; concave blocks (5) are welded to the two ends of the cross beam respectively, grooves (9) are formed in the concave blocks, convex blocks (4) are welded to the inner wall of a dephosphorization box body (8), the convex blocks are matched with the grooves, and the concave blocks are connected with the convex blocks. The gap between the roller way and the gap bridge is reduced, the phenomenon of steel clamping caused by deformation is avoided, the gap bridge can be quickly disassembled and assembled, the operation efficiency is improved, the accident rate is reduced, and the device has the advantages of being easy to machine, low in replacement cost, easy and convenient to maintain and the like.

Description

Technical Field

[0001] This utility model relates to a quick and easy-to-disassemble bridge device inside a phosphorus removal box, belonging to the technical field of equipment in the metallurgical industry. Background Technology

[0002] A descaling box is a device used to remove iron oxide scale from metal surfaces. In the production of hot-rolled strip steel, to ensure the quality of the strip surface, it is necessary to remove the furnace-grown iron oxide scale and the regenerated iron oxide scale generated during rolling. During the finishing rolling process, the inside of the descaling box is subjected to prolonged erosion by high-pressure water to maintain the surface quality of the strip. However, existing technologies have the following problems: First, the bridging devices between the rollers inside the descaling box are prone to deformation, breakage, and weld corrosion, causing steel jamming or scratches on the steel surface. Second, to ensure convenient replacement of the roller conveyor inside the descaling box, a large working gap must be reserved between the roller conveyor and the bridging device. While this facilitates roller conveyor replacement, an excessively large gap between the bridging device and the roller conveyor can easily cause steel jamming, leading to steel accumulation accidents and seriously affecting normal production. Utility Model Content

[0003] The purpose of this invention is to provide a quick and easy-to-disassemble bridge device inside the descaling box, which can reduce the gap between the roller conveyor and the bridge, avoid the steel jamming caused by deformation, realize quick disassembly and replacement of the bridge, improve the efficiency of roller conveyor replacement, and solve the problems existing in the background technology.

[0004] The technical solution of this utility model is:

[0005] A quick-assembly and easy-to-disassemble bridge device for a descaling box includes crossbeams and longitudinal beams. The crossbeams and longitudinal beams are installed between adjacent roller conveyors inside the descaling box, and a high-pressure descaling manifold is provided on the outside of the roller conveyors. There are multiple crossbeams and longitudinal beams, with the longitudinal beams arranged parallel to each other and perpendicular to the crossbeams. The bottom of each longitudinal beam has a notch, and the number of notches on each longitudinal beam is the same as the number of notches on the crossbeams. The crossbeams are placed inside the notches. Concave blocks are welded to both ends of each crossbeam, and the concave blocks have grooves. Protrusions are welded to the inner wall of the descaling box, and the protrusions match the grooves, and the concave blocks are connected to the protrusions.

[0006] The longitudinal beam is symmetrically equipped with ramps at both ends, with the ramps forming an angle of 15 degrees with the horizontal plane, which can reduce the gap between the roller conveyor and the bridge.

[0007] The lower surface of the protrusion is flat, and the upper surface is a convex-shaped structure. The crossbeam is connected to the protrusion by a concave block.

[0008] The crossbeams and longitudinal beams are welded together as one piece, which facilitates hoisting.

[0009] The longitudinal beam has a hexagonal cross-section, including an upper surface, a lower surface, an upper side surface, and a lower side surface. The upper and lower surfaces of the longitudinal beam are parallel to each other. The two ends of the upper side surface are connected to the upper and lower sides respectively, and the lower side surface is connected to the lower surface. The upper side surface is inclined to form a slope. The minimum gap between the longitudinal beam and the roller conveyor is 8mm, which avoids steel jamming and can cope with the impact of thermal expansion and contraction on the equipment.

[0010] The longitudinal beam is provided with lifting holes to facilitate lifting operations.

[0011] The high-pressure dephosphorization manifold is installed on the dephosphorization box, and multiple nozzles are evenly arranged on the high-pressure dephosphorization manifold, with the nozzles facing the roller conveyor.

[0012] The number of high-pressure phosphorus removal manifolds is two, and the two high-pressure phosphorus removal manifolds are arranged one above the other.

[0013] The beneficial effects of this utility model are: it reduces the gap between the roller conveyor and the bridge, avoids the phenomenon of steel jamming caused by deformation, enables quick disassembly and assembly of the bridge, improves work efficiency, reduces the accident rate, and has the characteristics of simple processing, low replacement cost, and easy maintenance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view of the present invention;

[0016] In the diagram: 1. Horizontal beam; 2. Longitudinal beam; 3. Lifting hole; 4. Protrusion; 5. Concave block; 6. Roller conveyor; 7. High-pressure descaling manifold; 8. Descaling box; 9. Groove; 10. Notch; 11. Nozzle; 12. Slope. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and examples.

[0018] A quick-assembly and easy-to-disassemble bridge device for a phosphorus removal box includes a crossbeam 1 and a longitudinal beam 2. The crossbeam 1 and the longitudinal beam 2 are installed between adjacent roller conveyors 6 inside the phosphorus removal box body 8. A high-pressure phosphorus removal manifold 7 is provided on the outside of the roller conveyor 6. There are multiple crossbeams 1 and longitudinal beams 2. The multiple longitudinal beams 2 are arranged parallel to each other and perpendicular to each other. The bottom of the longitudinal beam 2 is provided with a notch 10. The number of notches on each longitudinal beam is the same as the number of crossbeams. The crossbeam 1 is set in the notch 10. The two ends of the crossbeam 1 are respectively welded with concave blocks 5. The concave blocks 5 are provided with grooves 9. The inner wall of the phosphorus removal box body 8 is welded with protrusions 4. The protrusions 4 match the grooves 9. The concave blocks 5 are connected to the protrusions 4.

[0019] The longitudinal beam 2 is symmetrically provided with ramps 12 at both ends. The ramps 12 are at an angle of 15 degrees to the horizontal plane, which can reduce the gap between the roller conveyor and the bridge.

[0020] The lower surface of the protrusion 4 is flat, and the upper surface is a convex-shaped structure. The crossbeam 1 is connected to the protrusion 4 by the concave block 5.

[0021] The crossbeam 1 and the longitudinal beam 2 are welded together as one piece for easy hoisting.

[0022] The longitudinal beam 2 has a hexagonal cross-section, including an upper surface, a lower surface, an upper side surface, and a lower side surface. The upper and lower surfaces of the longitudinal beam 2 are parallel to each other. The two ends of the upper side surface are connected to the upper and lower sides respectively, and the lower side surface is connected to the lower surface. The upper side surface is inclined to form a slope. The minimum gap between the longitudinal beam 2 and the roller conveyor is 8mm, which avoids steel jamming and can cope with the impact of thermal expansion and contraction on the equipment.

[0023] The longitudinal beam 2 is provided with a lifting hole 3 to facilitate lifting operations.

[0024] The high-pressure dephosphorization manifold 7 is installed on the dephosphorization box 8, and multiple nozzles 11 are evenly arranged on the high-pressure dephosphorization manifold 7, with the nozzles 11 facing the roller conveyor 6.

[0025] The number of high-pressure phosphorus removal manifolds 7 is two, and the two high-pressure phosphorus removal manifolds 7 are arranged vertically.

[0026] In this embodiment, refer to the appendix. Figure 1 , 2 There are two crossbeams 1, four longitudinal beams 2, and four protrusions 4. Each crossbeam 1 has two concave blocks 5 welded to both ends. The concave blocks 5 overlap with the protrusions 4 through grooves 9. The protrusions 4 are permanently welded to the descaling box 8, so that the crossbeams are stably installed on the protrusions, eliminating the need for tedious replacements each time the operation is carried out. The crossbeam is 1510 mm long, 120 mm wide, and 60 mm thick, while the longitudinal beam is 660 mm long, 200 mm wide, and 60 mm thick. Each longitudinal beam has two notches, each 100 mm long and 64 mm wide, which are fixed to the crossbeam 1 using a saddle-like method and welded firmly. This ensures both the stability of the weld and the stability of the mutual restraint between the crossbeam and longitudinal beam, preventing deformation caused by the impact of the steel billet and thus avoiding positional errors during assembly and disassembly. For easy assembly and disassembly, the longitudinal beams 2 at both ends of the crossbeam are equipped with lifting holes 3, for a total of four holes, facilitating lifting operations at various angles and with various tools. The sides of the longitudinal beams have a gentle 15-degree slope near the roller conveyor. This movement process solves the problem of steel billet jamming caused by the knocking head when exiting the rolling mill, allowing the steel billet to pass smoothly and ensuring smooth rolling. This utility model is low in cost and easy to maintain and manufacture.

[0027] This utility model allows for installation via the lifting holes 3 on the longitudinal beam 2, avoiding the inconvenience caused by the limited internal space of the descaling chamber 8 due to the high-pressure descaling manifold 7. After determining the position of the protrusion 4 in the descaling chamber 8, the concave block 5 is assembled, and then the longitudinal beam 2 is hoisted onto the transverse beam 1, completing the installation process. The saddle-style fixing method used for the transverse beam 1 and longitudinal beam 2 ensures that the fixed position remains unchanged even with prolonged spraying from the nozzle 11 on the high-pressure descaling manifold 7, thus avoiding steel jamming caused by deformation.

[0028] Both the crossbeam 1 and the longitudinal beam 2 are made of 60mm thick steel plates to enhance structural stability and wear resistance. The lifting hole 3 has a diameter of 40mm. The hole diameter cannot be too large to avoid accidents when the lifting hole 3 cannot withstand the tensile force after the upper surface of the longitudinal beam 2 wears and thins. The minimum gap between the longitudinal beam 2 and the roller conveyor 6 is 8mm, which can avoid steel jamming and also cope with the impact of thermal expansion and contraction on the equipment.

[0029] After prolonged use, this invention suffers from erosion damage caused by the spray from the high-pressure descaling manifold nozzles. This invention improves efficiency during replacement and maintenance, as disassembly requires only two people to lift it through the lifting holes, eliminating the need for welding, cutting, or screw removal. During roller replacement, the bridge can be quickly disassembled by removing the crossbeam; after roller installation, the bridge can be quickly installed, minimizing the gap between the roller conveyor and the bridge while improving the efficiency of roller replacement.

[0030] This invention is safe and reliable. Even under non-direct spraying conditions with 20 MPa descaling water, it can be used for extended periods and withstands steel billet temperatures of 1100°C without deformation within the descaling chamber environment. This invention is low in cost, easy to use and maintain, and simple to operate. It features improved work efficiency, reduced accident risks, and ensured the stability of steel rolling.

Claims

1. A quick and easy to disassemble phosphorus removal bridge device in a tank, characterized by: It includes a crossbeam (1) and a longitudinal beam (2). The crossbeam (1) and the longitudinal beam (2) are installed between adjacent rollers (6) in the dephosphorization box (8). A high-pressure dephosphorization manifold (7) is provided on the outside of the rollers (6). There are multiple crossbeams (1) and longitudinal beams (2). The multiple longitudinal beams (2) are arranged in parallel to each other and perpendicular to the crossbeam (1). The bottom of the longitudinal beam (2) is provided with a notch (10). The number of notches on each longitudinal beam is the same as the number of crossbeams. The crossbeam (1) is set in the notch (10). The two ends of the crossbeam (1) are welded with concave blocks (5). The concave blocks (5) are provided with grooves (9). The inner wall of the dephosphorization box (8) is welded with protrusions (4). The protrusions (4) match the grooves (9). The concave blocks (5) are connected to the protrusions (4).

2. A quick and easy removable phosphorus removal bridge device in a tank according to claim 1, characterized by: The longitudinal beam (2) has symmetrical ramps (12) at both ends, and the ramps (12) have an angle of 15 degrees with the horizontal plane.

3. A quick and easy dismountable phosphorus removal bridge device in a tank according to claim 1 or 2, characterized in that: The lower surface of the protrusion (4) is flat, and the upper surface is a convex-shaped structure. The crossbeam (1) is connected to the protrusion (4) through the concave block (5).

4. The quick and easy dismountable phosphorus removal bridge device in a tank according to claim 1 or 2, characterized in that: The crossbeam (1) and the longitudinal beam (2) are welded together as one piece.

5. A quick and easy removable phosphorus removal bridge device in a tank according to claim 2, characterized by: The longitudinal beam (2) has a hexagonal cross section, including an upper surface, a lower surface, an upper side surface and a lower side surface. The upper surface and the lower surface of the longitudinal beam (2) are parallel to each other. The two ends of the upper side surface are connected to the upper surface and the lower side surface respectively. The lower side surface is connected to the lower surface. The upper side surface is inclined to form a slope. The minimum gap between the longitudinal beam (2) and the roller conveyor is 8mm.

6. A quick and easy removable phosphorus removal bridge device in a tank according to claim 4, characterized by: The longitudinal beam (2) is provided with a hoisting hole (3).

7. A quick and easy dismountable phosphorus removal bridge device in a tank according to claim 1 or 2, characterized in that: The high-pressure dephosphorization manifold (7) is installed on the dephosphorization box (8), and multiple nozzles (11) are evenly arranged on the high-pressure dephosphorization manifold (7), with the nozzles (11) facing the roller conveyor (6).

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