Fabricated heavy steel frame workshop structure and construction method thereof

Abstract

The application relates to the technical field of factory buildings, and discloses a fabricated heavy steel frame factory building structure and a construction method thereof, wherein the fabricated heavy steel frame factory building structure comprises a roof truss installed on a foundation; the roof truss is provided with four roof beams which are symmetrically distributed in pairs at the top end of the roof truss and are installed through high-strength bolts; connecting beams are installed through high-strength bolts between every two symmetrically arranged roof beams; the bottom ends of the two connecting beams are provided with support beams which are installed through high-strength bolts at the top end of the roof truss; the inner walls of every two roof beams on the same side are connected through high-strength bolts and are provided with main roof plates; the driving mechanism and the movable mechanism are arranged, the top of the factory building can be quickly opened, in summer, natural wind can be used to realize indoor ventilation and heat dissipation, indoor air quality is improved, temperature and humidity are reduced, in winter without snow, natural light can be maximally used for illumination, and the lighting efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of factory building technology, and in particular to a prefabricated heavy steel frame factory building structure and its construction method. Background Technology

[0002] Steel structure buildings are widely used in industrial plant construction due to their high strength, durability, and reusability. In recent years, with the development of prefabricated building technology, more and more companies have begun to explore and apply prefabricated steel structure plants in order to improve construction efficiency, reduce costs, and enhance project quality.

[0003] Existing factory designs, whether using flat roofs or triangular shapes, are often enclosed structures. In the sweltering summer, they often suffer from poor air circulation, affecting the comfort of the indoor environment. In the winter snow season, the roofs of these factories are prone to structural damage or even collapse due to the limited ability to bear the weight of thick snow.

[0004] Therefore, the present invention provides a prefabricated heavy steel frame factory building structure and its construction method. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] This invention provides a prefabricated heavy steel frame factory building structure, including a roof truss installed on the foundation;

[0007] The roof truss has four roof beams that are symmetrically distributed in pairs installed at the top of the roof truss by high-strength bolts. A connecting beam is installed between each pair of symmetrically arranged roof beams by high-strength bolts. The bottom ends of the two connecting beams and the top of the roof truss are connected to supporting beams by high-strength bolts.

[0008] The inner walls of each pair of roof beams on the same side are connected to a main roof panel by high-strength bolts. A secondary roof panel assembly is slidably connected to each pair of roof beams on the same side. A drive mechanism is installed at the top of the roof truss to drive the secondary roof panel assembly to slide on the roof beam.

[0009] The top ends of the two connecting beams are connected to a fixed seat, and the top end of the fixed seat is rotatably connected to two symmetrically distributed baffles. The two supporting beams are connected by a crossbeam through high-strength bolts, and the crossbeam is provided with a movable mechanism to drive the baffles to rotate.

[0010] By adopting the above technical solution, and by setting up a drive mechanism and a moving mechanism, the roof of the factory building can be opened quickly. In summer, natural wind can be used to achieve indoor ventilation and heat dissipation, improve indoor air quality, and reduce temperature and humidity. In winter when there is no snow, natural light can be used to maximize lighting and improve lighting efficiency. The drive mechanism and the moving mechanism drive the secondary roof panel components to move back and forth over a short distance and the baffles to rotate back and forth within a certain range. In winter when there is snow accumulation, the snow on the surface of the factory roof can be removed, so that the structure will not be damaged or even collapsed due to the heavy pressure of snow accumulation, which greatly improves the use effect of the factory building.

[0011] Preferably, the roof truss includes columns, main beams, and secondary beams;

[0012] Four columns are installed on the foundation. The top of each pair of columns is connected to a main beam by high-strength bolts. A secondary beam is connected between each pair of main beams by high-strength bolts. The top of each main beam is connected to the roof beam by high-strength bolts.

[0013] Preferably, the drive mechanism includes a fixed block, a reverse lead screw, a slide bar, a servo motor, and a lifting column;

[0014] Each main beam has two fixed blocks symmetrically connected to its top. A reverse screw is rotatably connected between the two fixed blocks, and the outer wall of the reverse screw penetrates the interior of the support beam. A sliding rod is connected between the other two fixed blocks, and the sliding rod penetrates the interior of the support beam. A servo motor is installed on the outer wall of any fixed block, and the output end of the servo motor is sleeved with any end of the reverse screw. Two lifting columns are threadedly connected to the reverse screw, and the top of each lifting column is connected to the lower end of the secondary roof panel assembly by a high-strength bolt.

[0015] By adopting the above technical solution and by setting a driving mechanism, the secondary roof panel assembly can slide on the roof beam, thereby opening the roof of the factory building and allowing the air inside the factory building to circulate with the outside air.

[0016] Preferably, the lifting column includes a positioning tube, a movable tube, a support tube, and a spring;

[0017] Each of the sub-roof panel assemblies is symmetrically connected to two positioning tubes at its lower end. The interior of each positioning tube is connected to a movable tube by a high-strength bolt. A support tube is slidably connected to the outer wall of each movable tube. The lower end of each support tube is threaded to the outer wall of a reverse screw. A spring is connected to the bottom of each movable tube. The bottom end of each spring is connected to the bottom of the inner wall of the support tube.

[0018] By adopting the above technical solution and by setting up lifting columns, the secondary roof panel assembly can remain stable when sliding on the roof beam.

[0019] Preferably, each movable tube has two grooves inside, each groove has a slider slidably connected inside, and each slider is connected to the inner wall of the support tube.

[0020] By adopting the above technical solution, when the movable tube slides inside the support tube, the slider will slide inside the groove, thereby preventing the movable tube from leaving the support tube and thus playing a limiting role, and further maintaining the stability of the movable tube when it rises and falls inside the support tube.

[0021] Preferably, the secondary roof panel assembly includes a movable steel plate and a secondary roof panel;

[0022] The top of each positioning tube is connected to the bottom of the movable steel plate, and a secondary roof plate is connected between the two movable steel plates.

[0023] Preferably, each of the movable steel plates has a slot inside, and each slot is slidably connected to the outer wall of the main roof panel.

[0024] By adopting the above technical solution, the movable steel plate can be moved against the outer wall of the main roof plate under the action of the slot when it is displaced.

[0025] Preferably, the active mechanism includes a connecting plate, a sliding plate, a connecting rod, a screw, and a linkage assembly;

[0026] Two connecting plates are connected to the top of the crossbeam. The tops of the two connecting plates are connected to the bottom of the fixed base. A sliding plate is slidably connected to the outer walls of the two connecting plates. The sliding plate is rotatably connected to four symmetrically arranged connecting rods. The top of each connecting rod is rotatably connected to the bottom of the baffle. A screw is rotatably connected inside the crossbeam. The top of the screw is rotatably connected to the bottom of the fixed base. The inner wall of the sliding plate is threaded to the outer wall of the screw. A linkage assembly for driving the screw to rotate is provided inside the crossbeam.

[0027] By adopting the above technical solution and by setting up a movable mechanism, the space generated after the secondary roof panel assembly is displaced can be further expanded.

[0028] Preferably, the linkage assembly includes a rotating rod, a first bevel gear, a second bevel gear, and a third bevel gear;

[0029] The crossbeam is rotatably connected to a rotating rod, and both ends of the rotating rod are connected to a first bevel gear. The outer walls of the two first bevel gears are respectively meshed with a second bevel gear and a third bevel gear. The second bevel gear is connected to the outer wall of the reverse lead screw, and the third bevel gear is connected to the outer wall of the screw.

[0030] On the other hand, this application also provides a construction method for a prefabricated heavy steel frame factory structure, including the following steps:

[0031] S1: Measure and lay out the lines to determine the installation positions of the columns, main beams and secondary beams on the foundation, and install them in sequence to form the roof truss;

[0032] S2: Determine the installation positions of the roof beams, connecting beams, and supporting beams on the roof truss, and install them in sequence to form the roof section;

[0033] S3: Install the relevant main roof panels, secondary roof panel assemblies and baffle-related components on the roof to complete the installation of the outer surface of the roof;

[0034] S4: The secondary roof panel assembly is driven to slide on the roof beam via a drive mechanism, thereby opening the roof;

[0035] S5: When the drive mechanism moves, it drives the moving mechanism to run synchronously, thereby causing the two baffles to flip and expand the area of ​​the roof that can be opened.

[0036] The beneficial effects of the present invention are as follows: The prefabricated heavy steel frame factory building structure and its construction method described in the present invention, by setting up a drive mechanism and a moving mechanism, can quickly open the top of the factory building. In summer, natural wind can be used to achieve indoor ventilation and heat dissipation, improve indoor air quality, and reduce temperature and humidity. In winter when there is no snow, natural light can be used to maximize lighting and improve lighting efficiency.

[0037] The prefabricated heavy steel frame factory building structure and its construction method described in this invention drive the secondary roof panel assembly to move back and forth over a short distance and the baffle to rotate back and forth within a certain range through a drive mechanism and a movable mechanism. When there is snow accumulation in winter, it can remove the snow from the upper surface of the factory roof, so that the structure will not be damaged or even collapse due to the heavy pressure of snow accumulation, thus greatly improving the use effect of the factory building. Attached Figure Description

[0038] Figure 1 This is a perspective view of an embodiment of the present invention;

[0039] Figure 2 This is a three-dimensional structural schematic diagram of the roof truss of the present invention;

[0040] Figure 3 This is a three-dimensional structural diagram of the roof beam and main roof panel of the present invention;

[0041] Figure 4 This is a three-dimensional structural diagram of the secondary roof panel assembly and the lifting column of the present invention;

[0042] Figure 5 This is a three-dimensional structural diagram of the lifting column in the separated state of the present invention;

[0043] Figure 6This is a partial cross-sectional schematic diagram of the three-dimensional structure of the support beam and crossbeam of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Roof truss; 11. Column; 12. Main beam; 13. Secondary beam;

[0046] 2. Roof beam; 21. Connecting beam; 22. Supporting beam;

[0047] 3. Main roof panel; 31. Secondary roof panel assembly; 311. Movable steel plate; 3111. Slot; 312. Secondary roof panel; 32. Baffle;

[0048] 4. Drive mechanism; 41. Fixed block; 42. Reverse lead screw; 43. Slide rod; 44. Servo motor; 45. Lifting column; 451. Positioning tube; 452. Movable tube; 453. Support tube; 454. Spring; 4521. Slide groove; 4522. Slider;

[0049] 5. Fixing base; 51. Crossbeam;

[0050] 6. Motion mechanism; 61. Connecting plate; 62. Slide plate; 63. Connecting rod; 64. Screw; 65. Linkage component; 651. Rotating rod; 652. First bevel gear; 653. Second bevel gear; 654. Third bevel gear. Detailed Implementation

[0051] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples. Example

[0052] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Please refer to the accompanying drawings. Figures 1 to 6 Please refer to the prefabricated heavy steel frame factory building structure provided in this application. Figure 1 , Figure 4 and Figure 6 This includes the roof truss 1 installed on the foundation;

[0053] Four roof beams 2 are symmetrically distributed in pairs at the top of the roof truss 1 by high-strength bolts. A connecting beam 21 is installed between each pair of symmetrically arranged roof beams 2 by high-strength bolts. A support beam 22 is installed at the bottom of each connecting beam 21 and the top of the roof truss 1 by high-strength bolts.

[0054] The inner walls of each pair of roof beams 2 on the same side are connected to the main roof panel 3 by high-strength bolts. Each pair of roof beams 2 on the same side are slidably connected to the secondary roof panel assembly 31. The top of the roof truss 1 is equipped with a drive mechanism 4, which is used to drive the secondary roof panel assembly 31 to slide on the roof beam 2.

[0055] The top ends of the two connecting beams 21 are connected to a fixed seat 5. The top ends of the fixed seat 5 are rotatably connected to two symmetrically distributed baffles 32. The two supporting beams 22 are connected by a crossbeam 51 through high-strength bolts. The crossbeam 51 is equipped with a movable mechanism 6 that drives the baffles 32 to rotate.

[0056] Specifically, after the roof beam 2, connecting beam 21, and supporting beam 22 are assembled and installed on the roof truss 1, the secondary roof panel assembly 31 is driven by the drive mechanism 4 to slide on the roof beam 2, thereby opening the roof. The movable mechanism 6 is affected by the drive mechanism 4, which in turn drives the two baffles 32 to flip, further expanding the upper part of the opened roof. By opening the top of the factory building, in summer, natural wind can be used to achieve indoor ventilation and heat dissipation, improve indoor air quality, and reduce temperature and humidity. In winter when there is no snow, natural light can be maximized for lighting, improving lighting efficiency. In winter when there is snow accumulation, the drive mechanism 4 and the movable mechanism 6 drive the secondary roof panel assembly 31 to move back and forth a short distance and the baffles 32 to flip back and forth within a certain range, which can remove the snow accumulation on the upper surface of the factory roof, so that the structure will not be damaged or even collapsed due to the heavy pressure of snow accumulation, greatly improving the use effect of the factory building.

[0057] Please refer to this carefully. Figure 1 and Figure 2 The roof truss 1 includes columns 11, main beams 12 and secondary beams 13;

[0058] Four columns 11 are installed on the foundation. The top of every two columns 11 is connected to a main beam 12 by high-strength bolts. The two main beams 12 are connected to a secondary beam 13 by high-strength bolts. The top of each main beam 12 is connected to the roof beam 2 by high-strength bolts.

[0059] Specifically, reinforcing ribs can be installed at the connection points of columns 11, main beams 12 and secondary beams 13 to assist in positioning and installation. At the same time, anti-vibration pads can be installed on the mating surfaces of the reinforcing ribs and columns 11, main beams 12 and secondary beams 13 to reduce vibration and improve the stability of the roof truss 1.

[0060] Please refer to this carefully. Figure 1 and Figure 4 The drive mechanism 4 includes a fixed block 41, a reverse lead screw 42, a slide bar 43, a servo motor 44, and a lifting column 45;

[0061] Each main beam 12 is symmetrically connected to two fixing blocks 41 at its top. A reverse screw 42 is rotatably connected between the two fixing blocks 41. The outer wall of the reverse screw 42 penetrates the interior of the support beam 22. A sliding rod 43 is connected between the other two fixing blocks 41. The sliding rod 43 penetrates the interior of the support beam 22. A servo motor 44 is installed on the outer wall of any fixing block 41. The output end of the servo motor 44 is sleeved with any end of the reverse screw 42. Two lifting columns 45 are threadedly connected to the reverse screw 42. The top of each lifting column 45 is connected to the lower end of the secondary roof panel assembly 31 by a high-strength bolt.

[0062] Specifically, the servo motor 44 drives the reverse screw 42 to rotate, causing the reverse screw 42 to move the lifting column 45, which in turn causes the lifting column 45 to slide the secondary roof panel assembly 31 on the roof beam 2. While the secondary roof panel assembly 31 is moving, it will drive another lifting column 45 to slide on the slide bar 43, thereby maintaining the stability of the secondary roof panel assembly 31 during movement.

[0063] Please refer to this carefully. Figure 5 The lifting column 45 includes a positioning tube 451, a movable tube 452, a support tube 453, and a spring 454;

[0064] Each secondary roof panel assembly 31 is symmetrically connected to two positioning tubes 451 at its lower end. The two positioning tubes 451 are connected to movable tubes 452 inside by high-strength bolts. Each movable tube 452 is slidably connected to a support tube 453 on its outer wall. The lower end of each support tube 453 is threaded to the outer wall of a reverse screw 42. Each movable tube 452 is connected to a spring 454 at its bottom end. The bottom end of each spring 454 is connected to the bottom end of the inner wall of the support tube 453.

[0065] Specifically, the secondary roof panel assembly 31 is in an inclined sliding state on the roof beam 2, which in turn drives the positioning tube 451 and the movable tube 452 to slide inside the support tube 453, thereby causing the spring 454 to undergo elastic deformation until the secondary roof panel assembly 31 comes to rest, at which point the spring 454 remains stable.

[0066] Please refer to this carefully. Figure 5 Each movable tube 452 has two sliding grooves 4521 inside, and each sliding groove 4521 has a slider 4522 slidably connected inside, and each slider 4522 is connected to the inner wall of the support tube 453.

[0067] Specifically, when the movable tube 452 slides inside the support tube 453, the slider 4522 will slide inside the groove 4521, thereby preventing the movable tube 452 from leaving the support tube 453 and thus playing a limiting role, further maintaining the stability of the movable tube 452 when it rises and falls inside the support tube 453.

[0068] Please refer to this carefully. Figure 4 The secondary roof panel assembly 31 includes a movable steel plate 311 and a secondary roof panel 312;

[0069] The top of each positioning tube 451 is connected to the bottom of the movable steel plate 311, and the two movable steel plates 311 are connected together by a secondary roof plate 312.

[0070] Specifically, when the secondary roof panel assembly 31 is displaced, the movable steel plate 311 will slide on the roof beam 2, and the movable steel plate 311 will drive the secondary roof panel 312 to move synchronously. In winter when there is snow, the secondary roof panel 312 will push the snow on the main roof panel 3 to move, thereby effectively reducing the accumulation of snow on the factory roof.

[0071] Please refer to this carefully. Figure 4 and Figure 5 Each movable steel plate 311 has a slot 3111 inside, and each slot 3111 is slidably connected to the outer wall of the main roof plate 3.

[0072] Specifically, when the movable steel plate 311 is displaced, under the action of the slot 3111, the movable steel plate 311 can be moved to fit against the outer wall of the main roof panel 3.

[0073] Please refer to this carefully. Figure 1 and Figure 6 The active mechanism 6 includes a connecting plate 61, a sliding plate 62, a connecting rod 63, a screw 64, and a linkage component 65;

[0074] Two connecting plates 61 are connected to the top of the crossbeam 51. The top of the two connecting plates 61 is connected to the bottom of the fixed base 5. The outer walls of the two connecting plates 61 are slidably connected to a sliding plate 62. The sliding plate 62 is rotatably connected to four symmetrically arranged connecting rods 63. The top of each connecting rod 63 is rotatably connected to the bottom of the baffle 32. A screw 64 is rotatably connected inside the crossbeam 51. The top of the screw 64 is rotatably connected to the bottom of the fixed base 5. The inner wall of the sliding plate 62 is threaded to the outer wall of the screw 64. A linkage assembly 65 for driving the screw 64 to rotate is provided inside the crossbeam 51.

[0075] Specifically, the screw 64 rotates to drive the slide plate 62 to move. While the slide plate 62 moves, it slides on the connecting plate 61 to prevent the slide plate 62 from rotating during lifting and lowering, thus playing a limiting role. The lifting and lowering of the slide plate 62 drives the lifting and lowering of multiple connecting rods 63, which in turn drives the top rotating baffle 32 to rotate, which can further expand the space generated after the secondary roof panel assembly 31 is displaced.

[0076] Please refer to this carefully. Figure 6 The linkage component 65 includes a rotating rod 651, a first bevel gear 652, a second bevel gear 653, and a third bevel gear 654;

[0077] A rotating rod 651 is rotatably connected inside the crossbeam 51. Both ends of the rotating rod 651 are connected to a first bevel gear 652. The outer walls of the two first bevel gears 652 are respectively meshed with a second bevel gear 653 and a third bevel gear 654. The second bevel gear 653 is connected to the outer wall of the reverse lead screw 42, and the third bevel gear 654 is connected to the outer wall of the screw 64.

[0078] Specifically, when the reverse lead screw 42 rotates, it drives the second bevel gear 653 to rotate, which in turn drives the first bevel gear 652 to rotate, which in turn drives the rotating rod 651 to rotate, which in turn drives the first bevel gear 652 at the other end to rotate, which in turn drives the third bevel gear 654 to rotate, which in turn drives the screw 64 to rotate.

[0079] On the other hand, this application also provides a construction method for a prefabricated heavy steel frame factory structure according to the above, including the following steps:

[0080] S1: Measure and lay out the lines to determine the installation positions of column 11, main beam 12 and secondary beam 13 on the foundation, and install them in sequence to form roof truss 1;

[0081] S2: Determine the installation positions of roof beam 2, connecting beam 21, and supporting beam 22 on roof truss 1, and install them in sequence to form the roof section;

[0082] S3: Install the relevant main roof panel 3, secondary roof panel assembly 31 and baffle 32 components on the roof to complete the installation of the outer surface of the roof;

[0083] S4: The secondary roof panel assembly 31 is driven to slide on the roof beam 2 by the drive mechanism 4, thereby opening the roof;

[0084] S5: When the drive mechanism 4 is active, it drives the active mechanism 6 to operate synchronously, thereby causing the two baffles 32 to flip and expand the area of ​​the roof opening.

[0085] Working principle: Reinforcing ribs can be installed at the connection points of columns 11, main beams 12 and secondary beams 13 to assist in positioning and installation. At the same time, anti-vibration pads can be installed on the contact surfaces of the reinforcing ribs with columns 11, main beams 12 and secondary beams 13 to reduce vibration and improve the stability of roof truss 1. It is then installed after the roof truss 1 by connecting the roof beams 2, connecting beams 21 and supporting beams 22.

[0086] The servo motor 44 drives the reverse lead screw 42 to rotate, causing the reverse lead screw 42 to move the lifting column 45. This, in turn, causes the lifting column 45 to slide the secondary roof panel assembly 31 on the roof beam 2. Simultaneously, the movement of the secondary roof panel assembly 31 drives another lifting column 45 to slide on the slide rod 43, thus maintaining the stability of the secondary roof panel assembly 31 during movement. The secondary roof panel assembly 31 is in a tilted sliding state on the roof beam 2, which in turn causes the positioning tube 451 and the movable tube 452 to slide inside the support tube 453, causing the spring 454 to undergo elastic deformation. This deformation continues until the secondary roof panel assembly 31 comes to a stop, at which point the spring 454 remains stable. When the movable tube 452 slides inside the support tube 453, the slider 4522 will slide inside the slide groove 4521, thereby preventing the movable tube 452 from leaving the support tube 453 and thus playing a limiting role. This further maintains the stability of the movable tube 452 when it rises and falls inside the support tube 453, and thus the roof can be opened. When the secondary roof panel assembly 31 is displaced, the movable steel plate 311 will slide on the roof beam 2. The movable steel plate 311 will drive the secondary roof panel 312 to move synchronously. In winter when there is snow, the secondary roof panel 312 will push the snow on the main roof panel 3 to move, thereby effectively reducing the snow accumulation on the factory roof.

[0087] When the reverse lead screw 42 rotates, it drives the second bevel gear 653 to rotate, which in turn drives the first bevel gear 652 to rotate. This, in turn, drives the rotating rod 651 to rotate, which in turn drives the first bevel gear 652 at the other end to rotate, which in turn drives the second bevel gear 654 to rotate. The second bevel gear 654 then drives the screw 64 to rotate, which in turn drives the slide plate 62 to move. As the slide plate 62 moves, it slides on the connecting plate 61 to prevent it from rotating during lifting and lowering, thus providing a limiting function. By sliding the slide plate 62 up and down, multiple connecting rods 63 are driven up and down, which in turn drive the top rotating connection. The rotation of baffle 32 can further expand the space created by the displacement of the secondary roof panel assembly 31. By opening the top of the factory building, natural wind can be used to achieve indoor ventilation and heat dissipation in summer, improving indoor air quality and reducing temperature and humidity. In winter when there is no snow, natural light can be maximized for lighting, improving lighting efficiency. In winter when there is snow accumulation, the drive mechanism 4 and the moving mechanism 6 drive the secondary roof panel assembly 31 to move back and forth over a short distance and the baffle 32 to flip back and forth within a certain range, which can remove the snow accumulation on the surface of the factory roof, so that the structure will not be damaged or even collapsed due to the heavy pressure of snow accumulation, greatly improving the use effect of the factory building.

[0088] The embodiments of this specific implementation have been described above. However, this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this embodiment, all of which are within the protection scope of this embodiment.

Claims

1. A prefabricated heavy steel frame factory building structure, comprising a roof truss (1) installed on a foundation; characterized in that: Four roof beams (2) are symmetrically distributed in pairs at the top of the roof truss (1). A connecting beam (21) is installed between each pair of symmetrically arranged roof beams (2) by high-strength bolts. A support beam (22) is installed at the bottom of each of the two connecting beams (21) and the top of the roof truss (1) by high-strength bolts. The inner walls of each pair of roof beams (2) on the same side are connected to the main roof panel (3) by high-strength bolts. The secondary roof panel assembly (31) is slidably connected to each pair of roof beams (2) on the same side. A drive mechanism (4) is installed at the top of the roof truss (1) to drive the secondary roof panel assembly (31) to slide on the roof beam (2). The top ends of the two connecting beams (21) are connected to a fixed seat (5). The top ends of the fixed seat (5) are rotatably connected to two symmetrically distributed baffles (32). The two supporting beams (22) are connected by a crossbeam (51) through high-strength bolts. The crossbeam (51) is equipped with an active mechanism (6) that drives the baffles (32) to rotate. The roof truss (1) includes columns (11), main beams (12) and secondary beams (13); Four columns (11) are installed on the foundation. The top of each pair of columns (11) is connected to a main beam (12) by high-strength bolts. The two main beams (12) are connected to a secondary beam (13) by high-strength bolts. The top of each main beam (12) is connected to the roof beam (2) by high-strength bolts. The drive mechanism (4) includes a fixed block (41), a reverse lead screw (42), a slide bar (43), a servo motor (44), and a lifting column (45). Two fixed blocks (41) are symmetrically connected to the top of each main beam (12). A reverse screw (42) is rotatably connected between the two fixed blocks (41). The outer wall of the reverse screw (42) penetrates the interior of the support beam (22). A sliding rod (43) is connected between the other two fixed blocks (41). The sliding rod (43) penetrates the interior of the support beam (22). A servo motor (44) is installed on the outer wall of any fixed block (41). The output end of the servo motor (44) is sleeved with any end of the reverse screw (42). Two lifting columns (45) are connected to the reverse screw (42) by threads. The top of each lifting column (45) is connected to the lower end of the secondary roof panel assembly (31) by high-strength bolts. The active mechanism (6) includes a connecting plate (61), a sliding plate (62), a connecting rod (63), a screw (64), and a linkage component (65); The top of the crossbeam (51) is connected to two connecting plates (61), the top of the two connecting plates (61) is connected to the bottom of the fixed seat (5), the outer walls of the two connecting plates (61) are slidably connected to a sliding plate (62), the sliding plate (62) is rotatably connected to four symmetrically arranged connecting rods (63), the top of each connecting rod (63) is rotatably connected to the bottom of the baffle (32), the inside of the crossbeam (51) is rotatably connected to a screw (64), the top of the screw (64) is rotatably connected to the bottom of the fixed seat (5), the inner wall of the sliding plate (62) is threaded to the outer wall of the screw (64), and the inside of the crossbeam (51) is provided with a linkage component (65) to drive the screw (64) to rotate. The linkage assembly (65) includes a rotating rod (651), a first bevel gear (652), a second bevel gear (653), and a third bevel gear (654). A rotating rod (651) is rotatably connected inside the crossbeam (51). Both ends of the rotating rod (651) are connected to a first bevel gear (652). The outer walls of the two first bevel gears (652) are respectively meshed with a second bevel gear (653) and a third bevel gear (654). The second bevel gear (653) is connected to the outer wall of the reverse lead screw (42), and the third bevel gear (654) is connected to the outer wall of the screw (64).

2. The prefabricated heavy steel frame factory building structure according to claim 1, characterized in that: The lifting column (45) includes a positioning tube (451), a movable tube (452), a support tube (453), and a spring (454). Each of the sub-roof panel assemblies (31) is symmetrically connected to two positioning tubes (451) at its lower end. The two positioning tubes (451) are connected to movable tubes (452) inside by high-strength bolts. Each movable tube (452) is slidably connected to a support tube (453) on its outer wall. The lower end of each support tube (453) is threaded to the outer wall of a reverse screw (42). Each movable tube (452) is connected to a spring (454) at its bottom end. The bottom end of each spring (454) is connected to the bottom end of the inner wall of the support tube (453).

3. The prefabricated heavy steel frame factory building structure according to claim 2, characterized in that: Each movable tube (452) has two grooves (4521) inside, and each groove (4521) has a slider (4522) slidably connected inside, and each slider (4522) is connected to the inner wall of the support tube (453).

4. The prefabricated heavy steel frame factory building structure according to claim 2, characterized in that: The secondary roof panel assembly (31) includes a movable steel plate (311) and a secondary roof panel (312); The top end of each of the positioning tubes (451) is connected to the bottom end of the movable steel plate (311), and a secondary roof plate (312) is connected between the two movable steel plates (311).

5. The prefabricated heavy steel frame factory building structure according to claim 4, characterized in that: Each of the movable steel plates (311) has a slot (3111) inside, and each slot (3111) is slidably connected to the outer wall of the main roof plate (3).

6. A construction method for a prefabricated heavy steel frame factory building structure, as described in any one of claims 1-5, characterized in that, Includes the following steps: S1: Measure and lay out the lines to determine the installation positions of the columns (11), main beams (12) and secondary beams (13) on the foundation, and install them in sequence to form the roof truss (1). S2: Determine the installation positions of the roof beam (2), connecting beam (21), and supporting beam (22) on the roof truss (1), and install them in sequence to form the roof section; S3: Install the relevant main roof panel (3), secondary roof panel assembly (31) and baffle (32) components on the roof to complete the installation of the outer surface of the roof; S4: The secondary roof panel assembly (31) is driven to slide on the roof beam (2) by the drive mechanism (4), thereby opening the roof; S5: When the drive mechanism (4) moves, it drives the moving mechanism (6) to run synchronously, thereby causing the two baffles (32) to flip and expand the area of ​​the roof opening.

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