A post-rolling air cooling device for hot-rolled plain round steel bars

Abstract

The utility model relates to a reinforcing steel bar cooling technical field especially relates to a kind of hot rolling bright round reinforcing steel bar air cooling device after rolling, including air cooling component, the air cooling component is composed of air cooling cover, lid, fan unit and water cooling structure, and the section of air cooling cover is hollow three quarters of circular ring design, the lid is provided with two and symmetrically installed in air cooling cover both ends, and fan unit is embedded in air cooling cover outer surface at equal intervals, the utility model has the beneficial effects as follows: the device uses the composite cooling system of "fan unit forced air cooling+water cooling pipe auxiliary cooling", combines reinforcing steel bar rotation design, makes heat exchange efficiency greatly promote, abandons spray water cooling mode, water cooling pipe is set in the cavity of air cooling cover, air heat is taken away by heat conduction, not directly contacted with reinforcing steel bar;Dry cool air that fan unit blows directly acts on reinforcing steel bar surface, realizes heat exchange, in the whole cooling process, reinforcing steel bar surface has no water stain residual risk, and water stain corrosion is completely eliminated from the source.

Description

Technical Field

[0001] This utility model relates to the field of steel bar cooling technology, and in particular to a post-rolling air cooling device for hot-rolled plain round steel bars. Background Technology

[0002] In the fields of modern architecture, bridge and infrastructure construction, hot-rolled plain round steel bars are key building materials, and their product quality directly affects the stability and safety of engineering structures. In the hot rolling process, the steel bars need to be rapidly cooled to a suitable temperature after being rolled at high temperatures to optimize their mechanical properties such as strength and toughness. Currently, the traditional cooling methods widely used in the industry mainly include natural air cooling, conveyor belt air cooling, and spray water cooling.

[0003] Natural air cooling relies on ambient air convection for heat dissipation, resulting in a slow cooling rate that is difficult to meet the efficiency requirements of large-scale industrial production. While conveyor belt air cooling can achieve continuous production, the large-area contact between the steel bars and the conveyor belt surface leads to the formation of a "thermal barrier layer" at the contact points, hindering heat dissipation and causing uneven cooling. Although spray water cooling can significantly improve cooling efficiency, it suffers from serious water waste, high wastewater discharge and treatment costs, and water stains that easily cause corrosion on the surface of the steel bars. Therefore, this application proposes a post-rolling air cooling device for hot-rolled plain round steel bars. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hot-rolled plain round steel bar air cooling device after rolling, so as to solve the problems mentioned in the background technology.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A post-rolling air-cooling device for hot-rolled plain round steel bars includes:

[0007] The air-cooled assembly consists of an air-cooled shroud, a cover, a fan unit, and a water-cooled structure. The air-cooled shroud has a hollow three-quarter circular cross-section. Two covers are provided and symmetrically installed at both ends of the air-cooled shroud. The fan units are equally spaced and embedded on the outer surface of the air-cooled shroud. The water-cooled structure is located inside the cavity of the air-cooled shroud.

[0008] The mounting bracket includes two support plates symmetrically arranged at both ends of the air-cooling assembly, a mounting plate welded to one side of one of the support plates, and a rotating roller rotatably connected between the two support plates. The mounting plate is located on the opening side of the air-cooling hood.

[0009] The reinforcing bar bearing assembly is provided in two sets, which are fixedly connected to the rotating roller by limiting bolts;

[0010] Multiple plain round steel bars are provided and installed between two steel bar bearing components, and are distributed in a ring array with the axis of the rotating roller as the center.

[0011] An adjustment component is located on the opening side of the air-cooling shroud and is arranged parallel to the rotating roller;

[0012] The support component is movably mounted on the adjustment component.

[0013] A servo motor is fixed to one of the support plates, and its output end is connected to the rotating roller;

[0014] A hydraulic push rod is fixed to the end of the mounting plate away from the rotating roller and is arranged parallel to the rotating roller. Its output end passes through the mounting plate and is connected to a tapered push block.

[0015] Furthermore, a drain outlet is provided at the center of the top of the opening side of the air-cooled hood, and a water inlet is provided at the center of the bottom of the opening side of the air-cooled hood. The axis of the air-cooled hood coincides with that of the rotating roller. The inner diameter of the air-cooled hood is larger than the outer diameter of the steel reinforcement bearing assembly. Air outlet grids are provided at equal intervals on the inner sidewall of the air-cooled hood and are arranged parallel to the rotating roller.

[0016] Furthermore, the cover is fixedly connected to the air-cooling shroud by bolts, and the bottom of the cover is integrally provided with a support foot, and a sealing strip is provided at the connection between the cover and the air-cooling shroud.

[0017] Furthermore, the fan units are distributed in multiple groups at equal intervals, each group consisting of three cooling fans linearly connected by an integrated bracket to form a long strip-shaped fan unit with a length of four-fifths of the air-cooled shroud. The axis of the cooling fans is consistent with the radial direction of the air-cooled shroud.

[0018] Furthermore, the water-cooling structure adopts a parallel circulating water circuit design, including multiple semi-circular water-cooling pipes, two branch pipes, and two connecting pipes. The multiple water-cooling pipes are equally spaced within the cavity of the air-cooling shroud. The inlet ends of all the water-cooling pipes are connected through the connecting pipes, and the outlet ends are led out through the other end of the connecting pipe. At the center of the opening side of the air-cooling shroud, two connecting pipes lead out of the branch pipes respectively, and the two branch pipes are respectively connected to the inlet and outlet through flanges.

[0019] Furthermore, the reinforcing bar bearing assembly includes:

[0020] The sleeve has an inner diameter that matches the outer diameter of the rotating roller and is connected to the rotating roller by a limiting bolt;

[0021] The outer fixing ring is connected to the sleeve by eight diagonal braces, which are evenly distributed at equal angles.

[0022] The mounting ring is welded to the middle of the diagonal brace and is arranged concentrically with the sleeve.

[0023] Eight support rods are evenly distributed along the circumference of the installation ring, and are staggered with the diagonal brace at a 22.5° angle.

[0024] A support cylinder is welded to the outer end of the support rod, and its inner diameter is larger than the outer diameter of the plain round steel bar.

[0025] Four limiting bolts are evenly distributed along the circumference of the sleeve;

[0026] The positions of the support cylinders of the two sets of steel bar bearing components correspond one-to-one, and the two ends of the plain round steel bar are respectively inserted into the two corresponding support cylinders. The conical push block coincides with the axis of one of the support cylinders. The support cylinder corresponding to the position of the conical push block is the unloading station, and the support cylinder above it is the loading station.

[0027] Furthermore, four first mounting screw holes are evenly provided at one end of the outer surface of the rotating roller along the circumference of the rotating roller, and four limiting grooves are evenly provided at the other end of the outer surface of the rotating roller along the circumference. The limiting grooves are arranged parallel to the axial direction of the rotating roller. Five second mounting screw holes are evenly distributed on the roller surface between two adjacent limiting grooves. The inner surface of the sleeve of the movable and adjustable steel bar bearing assembly is provided with matching limiting ridges corresponding to the positions of the limiting grooves.

[0028] Furthermore, the adjustment assembly includes a movable rail, an adjustment handle, and a lead screw. The movable rail is arranged parallel to the rotating roller and is located on the opening side of the air-cooling shroud. The lead screw is rotatably connected inside the movable rail, and the adjustment handle is rotatably connected to one end of the movable rail. The output end of the adjustment handle is connected to the end of the lead screw.

[0029] Furthermore, the supporting assembly includes a lead screw nut adapted to the lead screw of the adjusting assembly, a connecting frame, and a supporting block. The connecting frame is designed in an inverted "L" shape, and a supporting block is installed at the end of the top horizontal plate of the connecting frame. The supporting block extends into the opening of the air cooling hood, and a "V" shaped supporting groove is provided on the top of the supporting block. The supporting block is at the same height as the two supporting cylinders at the loading station.

[0030] The beneficial effects of this utility model are:

[0031] 1. To address the issues of slow natural air cooling rate and high thermal resistance of conveyor belt air cooling, this device adopts a composite cooling system of "forced air cooling by fan unit + auxiliary cooling by water cooling pipe". Combined with the rotating design of steel bars, the heat exchange efficiency is greatly improved. It abandons the direct water spray mode of spray water cooling. The water cooling pipe is set in the cavity of the air cooling hood and removes heat from the air through heat conduction without direct contact with the steel bars. The dry cold air blown out by the fan unit acts directly on the surface of the steel bars to achieve heat exchange. During the entire cooling process, there is no risk of water stains remaining on the surface of the steel bars, thus eliminating the occurrence of water stain corrosion from the source.

[0032] 2. To address the uneven cooling problem caused by the large-area contact of the conveyor belt, this device achieves 360° cooling without dead angles through the "point contact" bearing of the support cylinder and the circular rotation of the steel bars, effectively avoiding quality defects caused by uneven internal stress.

[0033] 3. This device, through the limiting groove of the rotating roller and the design of multiple second mounting screw holes, can realize the rapid adjustment of the spacing between the two steel bar bearing components, adapting to the production needs of different specifications of plain round steel bars. Attached Figure Description

[0034] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0035] Figure 1 This is a schematic diagram of the structure of a hot-rolled plain round steel bar air-cooling device after rolling according to the present invention;

[0036] Figure 2 This is a schematic diagram of the disassembled structure of the air-cooling component of a hot-rolled plain round steel bar air-cooling device according to the present invention;

[0037] Figure 3 This is a schematic diagram of the steel bar bearing component structure of a hot-rolled plain round steel bar post-rolling air cooling device according to this utility model;

[0038] Figure 4 This is a schematic diagram of the support component structure of a hot-rolled plain round steel bar air-cooling device after rolling according to this utility model;

[0039] Figure 5 This is a schematic diagram of the water-cooling structure of a post-rolling air-cooling device for hot-rolled plain round steel bars according to this utility model;

[0040] Figure label:

[0041] 1. Air-cooled assembly; 101. Air-cooled shroud; 1011. Water inlet; 1012. Drain outlet; 1013. Air outlet grille; 102. Cover; 1021. Support legs; 1022. Sealing strip; 103. Fan unit; 104. Water-cooled structure; 1041. Water-cooled pipe; 1042. Branch pipe; 1043. Connecting pipe;

[0042] 2. Plain round steel bars;

[0043] 3. Reinforcing bar load-bearing components; 301. Sleeve; 3011. Limiting rib; 302. Outer fixing ring; 303. Support sleeve; 304. Diagonal brace; 305. Mounting ring; 306. Support rod; 307. Limiting bolt;

[0044] 4. Mounting bracket; 401. Support plate; 402. Rotating roller; 4021. First mounting screw hole; 4022. Second mounting screw hole; 4023. Limiting groove; 403. Mounting plate;

[0045] 5. Adjustment assembly; 501. Movable rail; 502. Adjustment handle; 503. Lead screw;

[0046] 6. Supporting components; 601. Threaded nut; 602. Connecting frame; 603. Supporting block;

[0047] 7. Servo motor;

[0048] 8. Hydraulic push rod;

[0049] 9. Conical push block. Detailed Implementation

[0050] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0051] Please see Figure 2 and Figure 4 This utility model provides a technical solution: a hot-rolled plain round steel bar air-cooling device after rolling, comprising:

[0052] The air-cooled assembly 1 mainly consists of an air-cooled cover 101, a cover 102, a fan unit 103, and a water-cooled structure 104. The air-cooled cover 101 has a hollow three-quarters circular cross-section. There are two covers 102, which are symmetrically installed at both ends of the air-cooled cover 101. The fan units 103 are equally spaced and embedded on the outer surface of the air-cooled cover 101. The water-cooled structure 104 is located inside the cavity of the air-cooled cover 101.

[0053] The mounting bracket 4 includes two support plates 401 symmetrically arranged at both ends of the air-cooled assembly 1, a mounting plate 403 welded to one side of one of the support plates 401, and a rotating roller 402 rotatably connected between the two support plates 401. The mounting plate 403 is located on the opening side of the air-cooled cover 101.

[0054] The steel bar bearing component 3 is provided in two sets, which are fixedly connected to the rotating roller 402 by the limiting bolt 307.

[0055] Multiple plain round steel bars 2 are installed between two steel bar bearing components 3 and arranged in a ring array with the central axis of the rotating roller 402 as the center.

[0056] Adjustment component 5 is located on the opening side of air cooling shroud 101 and is arranged parallel to rotating roller 402.

[0057] Support component 6 is movably mounted on adjustment component 5.

[0058] The servo motor 7 is fixed on one of the support plates 401, and its output end is connected to the rotating roller 402.

[0059] The hydraulic push rod 8 is fixed on the mounting plate 403 at one end away from the rotating roller 402 and is arranged parallel to the rotating roller 402. The output end of the hydraulic push rod 8 passes through the mounting plate 403 and is connected to a tapered push block 9.

[0060] The three-quarter circular air-cooled cover 101, together with the symmetrically installed caps 102 at both ends, forms a closed cooling space to reduce heat loss. The fan units 103, which are equally spaced and embedded on the outer surface of the air-cooled cover 101, can achieve forced air cooling. The water-cooled structure 104 set in the cavity is cooled by water-cooled pipes 1041 and other components. The dual cooling method greatly improves the cooling efficiency.

[0061] See Figure 1 and Figure 2 A drain outlet 1012 is located at the center of the top of the open side of the air-cooled hood 101, and a water inlet 1011 is located at the center of the bottom of the open side of the air-cooled hood 101. Air outlet grilles 1013, parallel to the rotating roller 402, are evenly spaced on the inner wall of the air-cooled hood 101. Cooling water flows in through the water inlet 1011, absorbs heat through the water-cooling pipe 1041, and is discharged from the drain outlet 1012, forming a highly efficient heat exchange closed loop. The air-cooled hood 101 is placed on the ground and covers the steel reinforcement supporting assembly. The axis of the air-cooled hood 101 coincides with that of the rotating roller 402, and its inner diameter is larger than the outer diameter of the steel reinforcement supporting assembly 3. This ensures that there is no interference when the steel reinforcement supporting assembly 3 drives the smooth round steel bar 2 to rotate, and also allows the cold air blown by the fan unit 103 to form a vortex effect in the enclosed space, increasing the contact area between the airflow and the surface of the smooth round steel bar 2, and improving the heat exchange efficiency.

[0062] See Figure 1 and Figure 2 The cover 102 is fixedly connected to the air-cooled cover 101 by bolts, and the bottom of the cover 102 is integrally provided with a support foot 1021. A sealing strip 1022 is provided at the connection between the cover 102 and the air-cooled cover 101. The cover 102 is fixed to the air-cooled cover 101 by bolts to form a detachable fast connection, which facilitates the inspection and maintenance of the water-cooled structure 104, the fan unit 103, etc. The integral support foot 1021 at the bottom of the cover 102 provides stable support for the device.

[0063] See Figure 1 and Figure 2 Multiple fan units 103 are evenly distributed, each consisting of three cooling fans linearly connected by an integrated bracket, forming a long strip-shaped fan unit 103 with a length of four-fifths of the air-cooled shroud 101. The axis of the cooling fan is consistent with the radial direction of the air-cooled shroud 101. The long strip-shaped structure with a length of four-fifths of the air-cooled shroud 101 can achieve large-area, full-coverage air cooling for the plain round steel bar 2. The axis of the cooling fan is consistent with the radial direction of the air-cooled shroud 101, so that the blown cold air can act vertically and evenly on the surface of the plain round steel bar 2.

[0064] See Figure 2 and Figure 5 The water-cooling structure 104 adopts a parallel circulating water circuit design, including multiple semi-circular water-cooling pipes 1041, two branch pipes 1042, and two connecting pipes 1043. The multiple water-cooling pipes 1041 are evenly spaced within the cavity of the air-cooling cover 101. The inlet ends of all water-cooling pipes 1041 are connected through the connecting pipes 1043, and the outlet ends are uniformly led out through the connecting pipes 1043 at the other end. At the center of the top and bottom of the opening side of the air-cooling cover 101, the two connecting pipes 1043 lead out the branch pipes 1042 respectively, and the two branch pipes 1042 are connected to the inlet 1011 and the outlet 1012 respectively through flanges. This design allows the cooling water to enter the bottom connecting pipe 1043 from the inlet 1011 through the branch pipes 1042, and then be simultaneously distributed to each water-cooling pipe 1041, ensuring uniform flow of each water-cooling pipe 1041 and avoiding the problem of reduced cooling capacity in the later part of the pipes in the traditional series water circuit.

[0065] See Figure 1 and Figure 4 The reinforcing steel load-bearing component 3 includes:

[0066] Sleeve 301 has an inner diameter that matches the outer diameter of rotating roller 402 and is connected to rotating roller 402 by limiting bolt 307;

[0067] The outer fixing ring 302 is connected to the sleeve 301 by eight diagonal braces 304, which are evenly distributed circumferentially at equal angles.

[0068] Mounting ring 305 is welded to the middle of diagonal brace 304 and is arranged concentrically with sleeve 301;

[0069] Eight support rods 306 are evenly distributed around the circumference of the mounting ring 305, and are staggered with the diagonal brace 304 at a 22.5° angle.

[0070] Support cylinder 303 is welded to the outer end of support rod 306, and its inner diameter is larger than the outer diameter of plain round steel bar 2;

[0071] There are four limit bolts 307 evenly distributed around the sleeve 301.

[0072] The positions of the support cylinders 303 of the two sets of steel bar bearing components 3 correspond one-to-one, and the two ends of the plain round steel bar 2 are respectively inserted into the two corresponding support cylinders 303. The axis of the conical push block 9 coincides with the axis of one of the support cylinders 303. The support cylinder 303 corresponding to the position of the conical push block 9 is the unloading station, and the support cylinder 303 above it is the loading station. Both the unloading station and the loading station are set on the opening side of the air cooling hood 101 to facilitate loading and unloading. The outer fixing ring 302 and the eight diagonal braces 304 distributed at equal angles form a spatial truss structure, which distributes the load-bearing weight of a single steel bar to the entire component, thereby improving the load-bearing capacity of the system.

[0073] See Figure 3 and Figure 4 Four first mounting screw holes 4021 are evenly provided around one end of the outer surface of the rotating roller 402, and four limiting grooves 4023 are evenly provided around the other end of the outer surface of the rotating roller 402. The limiting grooves 4023 are arranged parallel to the axial direction of the rotating roller 402. Five second mounting screw holes 4022 are evenly distributed on the roller surface between two adjacent limiting grooves 4023 along the axial direction of the rotating roller 402. The inner surface of the sleeve 301 of the movable and adjustable steel bar bearing component 3 is provided with matching limiting ribs 3011 at the positions of the limiting grooves 4023. The limiting grooves 4023 and the second mounting screw holes 4022 cooperate with the limiting ribs 3011 on the inner surface of the sleeve 301, allowing the steel bar bearing component 3 to move along the axial direction of the rotating roller 402 and be precisely positioned. By adjusting the drive screw 503 of the component 5, the position of the supporting component 6 can be quickly adjusted, and the production switching of plain round steel bars 2 of different lengths can be quickly completed.

[0074] See Figure 3 and Figure 4 The adjustment component 5 mainly includes a movable rail 501, an adjustment handle 502, and a lead screw 503. The movable rail 501 is arranged parallel to the rotating roller 402 and is located on the open side of the air-cooling hood 101. The lead screw 503 is rotatably connected inside the movable rail 501, and the adjustment handle 502 is rotatably connected to one end of the movable rail 501. The output end of the adjustment handle 502 is connected to the end of the lead screw 503. The operator only needs to turn the adjustment handle 502 to drive the lead screw 503 to slide the nut 601 of the support component 6 along the movable rail 501, quickly completing the position adjustment of the support block 603. The layout design of the movable rail 501 being parallel to the rotating roller 402 and located on the open side of the air-cooling hood 101 ensures that the support component 6 always maintains the best alignment with the loading position of the steel bar bearing component 3 during the adjustment process, avoiding loading errors caused by positional deviation.

[0075] See Figure 3 and Figure 4The support assembly 6 includes a nut 601 adapted to the lead screw 503 of the adjustment assembly 5, a connecting frame 602, and a support block 603. The connecting frame 602 has an inverted "L" shape, and the support block 603 is installed at the end of the top horizontal plate of the connecting frame 602. The support block 603 extends into the opening of the air cooling hood 101, and the top of the support block 603 is provided with a "V" shaped support groove. The support block 603 is at the same height as the two support cylinders 303 at the loading station. The support assembly 6 is connected to the air cooling hood 101. The lead screw 601 works in conjunction with the lead screw 503 of the adjusting assembly 5 to convert the rotational motion of the lead screw 503 into linear motion. When feeding the plain round steel bar 2, the operator only needs to turn the adjusting handle 502 to quickly adjust the position of the support block 603 so that it is positioned appropriately between the support cylinders 303 of the two feeding stations. When used in conjunction with the steel bar feeding mechanism, it can support the plain round steel bar 2 during the feeding process and prevent its end from falling down and being unable to be inserted into the support cylinder 303 at the other end.

[0076] Working principle: Under the drive of the feeding mechanism, the plain round steel bar 2 is inserted into the support cylinder 303 by one end of the fixed steel bar bearing component 3. The adjusting component 5 drives the support block 603 of the support component 6 to accurately position and assist in feeding until the other end of the plain round steel bar 2 is inserted into the support cylinder 303 on the position-adjustable steel bar bearing component 3. The servo motor 7 drives the rotating roller 402 to rotate, so that the plain round steel bar 2 rotates in a ring with the steel bar bearing component 3. In the air-cooling component 1, the fan unit 103 blows air towards the plain round steel bar 2 radially along the air-cooling hood 101 through the air outlet grille 1013 of the air-cooling hood 101. The parallel circulating water of the water-cooling structure 104 flows through the water inlet 101. 1. Water cooling pipe 1041 and drain outlet 1012 assist in cooling. The dual cooling media efficiently exchange heat with the rotating round steel bar 2. After cooling, the round steel bar 2 moves to the unloading station. The hydraulic push rod 8 pushes the conical push block 9 into the support cylinder 303, pushing the steel bar out of the support cylinder 303 at the unloading station for unloading. At the same time, the limiting groove 4023 of the rotating roller 402 and the second mounting screw hole 4022, together with the movable rail 501, adjusting handle 502 and screw 503 of the adjusting component 5, can quickly adjust the position of the steel bar bearing component 3 and the support component 6 to adapt to the production of steel bars of different specifications and realize continuous and automated cooling operation.

[0077] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for air cooling after hot-rolled plain round steel bars, characterized in that, include: The air-cooled assembly consists of an air-cooled shroud, a cover, a fan unit, and a water-cooled structure. The air-cooled shroud has a hollow three-quarter circular cross-section. Two covers are provided and symmetrically installed at both ends of the air-cooled shroud. The fan units are equally spaced and embedded on the outer surface of the air-cooled shroud. The water-cooled structure is located inside the cavity of the air-cooled shroud. The mounting bracket includes two support plates symmetrically arranged at both ends of the air-cooling assembly, a mounting plate welded to one side of one of the support plates, and a rotating roller rotatably connected between the two support plates. The mounting plate is located on the opening side of the air-cooling hood. The reinforcing bar bearing assembly is provided in two sets, which are fixedly connected to the rotating roller by limiting bolts; Multiple plain round steel bars are provided and installed between two steel bar bearing components, and are distributed in a ring array with the axis of the rotating roller as the center. An adjustment component is located on the opening side of the air-cooling shroud and is arranged parallel to the rotating roller; The support component is movably mounted on the adjustment component. A servo motor is fixed to one of the support plates, and its output end is connected to the rotating roller; A hydraulic push rod is fixed to the end of the mounting plate away from the rotating roller and is arranged parallel to the rotating roller. Its output end passes through the mounting plate and is connected to a tapered push block.

2. The air-cooling device for hot-rolled plain round steel bars according to claim 1, characterized in that, A drain outlet is provided at the center of the top of the opening side of the air-cooled hood, and a water inlet is provided at the center of the bottom of the opening side of the air-cooled hood. The axis of the air-cooled hood coincides with that of the rotating roller. The inner diameter of the air-cooled hood is larger than the outer diameter of the steel reinforcement bearing assembly. Air outlet grids are provided at equal intervals on the inner sidewall of the air-cooled hood and are arranged parallel to the rotating roller.

3. The air-cooling device for hot-rolled plain round steel bars according to claim 1, characterized in that, The cover is fixedly connected to the air-cooled shroud by bolts, and the bottom of the cover is integrally provided with a support foot. A sealing strip is provided at the connection between the cover and the air-cooled shroud.

4. The air-cooling device for hot-rolled plain round steel bars according to claim 1, characterized in that, The fan units are distributed in multiple groups at equal intervals. Each group consists of three cooling fans linearly connected by an integrated bracket to form a long strip-shaped fan unit with a length of four-fifths of the air-cooled shroud. The axis of the cooling fans is consistent with the radial direction of the air-cooled shroud.

5. The air-cooling device for hot-rolled plain round steel bars according to claim 1, characterized in that, The water-cooling structure adopts a parallel circulating water circuit design, including multiple semi-circular water-cooling pipes, two branch pipes, and two connecting pipes. The multiple water-cooling pipes are equally spaced inside the cavity of the air-cooling shroud. The inlet ends of all the water-cooling pipes are connected through the connecting pipes, and the outlet ends are led out through the other end of the connecting pipe. At the center of the opening side of the air-cooling shroud, the two connecting pipes lead out of the branch pipes respectively, and the two branch pipes are respectively connected to the inlet and outlet through flanges.

6. The air-cooling device for hot-rolled plain round steel bars according to claim 1, characterized in that, The steel reinforcement load-bearing component includes: The sleeve has an inner diameter that matches the outer diameter of the rotating roller and is connected to the rotating roller by a limiting bolt; The outer fixing ring is connected to the sleeve by eight diagonal braces, which are evenly distributed at equal angles. The mounting ring is welded to the middle of the diagonal brace and is arranged concentrically with the sleeve. Eight support rods are evenly distributed along the circumference of the installation ring, and are staggered with the diagonal brace at a 22.5° angle. A support cylinder is welded to the outer end of the support rod, and its inner diameter is larger than the outer diameter of the plain round steel bar. Four limiting bolts are evenly distributed along the circumference of the sleeve; The positions of the support cylinders of the two sets of steel bar bearing components correspond one-to-one, and the two ends of the plain round steel bar are respectively inserted into the two corresponding support cylinders. The conical push block coincides with the axis of one of the support cylinders. The support cylinder corresponding to the position of the conical push block is the unloading station, and the support cylinder above it is the loading station.

7. The air-cooling device for hot-rolled plain round steel bars according to claim 6, characterized in that, Four first mounting screw holes are evenly provided at one end of the outer surface of the rotating roller along the circumference of the rotating roller, and four limiting grooves are evenly provided at the other end of the outer surface of the rotating roller along the circumference of the rotating roller. The limiting grooves are arranged parallel to the axial direction of the rotating roller. Five second mounting screw holes are evenly distributed on the roller surface between two adjacent limiting grooves. The inner surface of the sleeve of the movable and adjustable steel bar bearing assembly is provided with matching limiting ridges corresponding to the positions of the limiting grooves.

8. The air-cooling device for hot-rolled plain round steel bars according to claim 1, characterized in that, The adjustment assembly includes a movable rail, an adjustment handle, and a lead screw. The movable rail is arranged parallel to the rotating roller and is located on the opening side of the air-cooling shroud. The lead screw is rotatably connected inside the movable rail, and the adjustment handle is rotatably connected to one end of the movable rail. The output end of the adjustment handle is connected to the end of the lead screw.

9. The air-cooling device for hot-rolled plain round steel bars according to claim 6, characterized in that, The supporting assembly includes a lead screw nut adapted to the lead screw of the adjusting assembly, a connecting frame, and a supporting block. The connecting frame is designed in an inverted "L" shape, and a supporting block is installed at the end of the top horizontal plate of the connecting frame. The supporting block extends into the opening of the air cooling hood, and a "V" shaped supporting groove is provided on the top of the supporting block. The supporting block is at the same height as the two supporting cylinders at the loading station.

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