Full cast-in-place concrete precast beam suitable for steel structure

Abstract

The invention discloses a full cast-in-place concrete precast beam suitable for a steel structure, which comprises two pieces of H-shaped steel, inverted T-shaped steel brackets are welded on the adjacent sides of the two pieces of H-shaped steel, a precast beam body is arranged between the two inverted T-shaped steel brackets, and the precast beam body comprises a plurality of modular templates. According to the installation method, the field workload can be reduced, hoisting is convenient, the modular formwork is convenient to install and reuse, the prefabricated beam and the crane can be fixedly connected conveniently through the installation equipment, the hoisting equipment and the prefabricated beam are easily separated after the prefabricated beam is installed, and the multiple electromagnets and the multiple extrusion plates are arranged, so that the installation efficiency is improved. And meanwhile, after the mounting holes are aligned, a bolt can directly penetrate through the two mounting holes, so that the precast beam and the T-shaped steel part are quickly aligned to be pre-fixed.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated beams for steel structures, and in particular to a fully cast-in-situ concrete prefabricated beam suitable for steel structures. Background Art

[0002] my country is vigorously promoting the transformation of traditional buildings to industrialized buildings. Compared with traditional buildings with long construction periods, serious environmental pollution, and shortage of construction workers, prefabricated steel structure buildings are manufactured in factories with prefabricated components and assembled on site, which shortens the construction period, improves construction efficiency, and reduces construction costs.

[0003] When prefabricated steel structures are used in buildings with large bays, secondary steel beams are often required to accommodate various types of floor slabs. Floor slabs in steel structures are typically placed on top of steel beams, and the clear height of a building is equal to the floor height minus the plate thickness plus the beam height. This makes it less suitable for residential projects with high clear height requirements. Reducing the height of steel beams and increasing the thickness of steel beam plates results in significant steel waste and poor economic efficiency.

[0004] When assembling the prefabricated steel beams, they need to be hoisted. The existing hoisting method mostly uses steel wire ropes to fix the prefabricated beams on hooks and then hoist them. Since the steel wire ropes are relatively thick, it is difficult to tighten the steel wire ropes during hoisting, which poses certain safety hazards during the hoisting process. After the prefabricated beams are hoisted to the specified position, it is difficult to align the mounting holes on the prefabricated beams with the mounting holes on the T-shaped steel components on the main beams. After the prefabricated beams are installed, it is rather troublesome to remove the steel wire ropes from the prefabricated beams. Therefore, it is necessary to design a method for installing fully cast-in-situ concrete prefabricated beams of steel structures to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the prior art and propose a fully cast-in-situ concrete precast beam suitable for steel structures. The installation method can reduce the workload on site and facilitate hoisting. The modular template is easy to install and reuse. Using the installation equipment, the precast beam can be easily fixed to the crane, and the hoisting equipment can be easily separated from the precast beam after the precast beam is installed. The arrangement of multiple electromagnets and extrusion plates makes it difficult for the precast beam to move after it is lifted. At the same time, after the mounting holes are aligned, the bolts can be directly passed through the two mounting holes, so that the precast beam and the T-shaped steel component can be quickly aligned for pre-fixation.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A fully cast-in-situ concrete precast beam suitable for steel structures, comprising two H-shaped steels, adjacent sides of the two H-shaped steels are welded with inverted T-shaped steel brackets, a precast beam body is arranged between the two inverted T-shaped steel brackets, the precast beam body comprises a plurality of modular templates, a plurality of modular templates are provided with slots, the plurality of modular templates are mutually clamped through the slots, the lower ends of the plurality of modular templates are welded with U-shaped clamps, the modular templates located on both sides on the left side are provided with T-shaped steel components, a plurality of longitudinal bars are welded together on the two T-shaped steel components, a plurality of stirrups are welded together on the plurality of longitudinal bars, the plurality of longitudinal bars, stirrups and two T-shaped steel components constitute a steel cage.

[0008] Preferably, each of the U-shaped clamps is provided with a hole, the left and right sides of the modular formwork are provided with side ribs, the two side ribs are provided with multiple circular openings, each of the hollows is provided with a tension screw, the left and right sides of each tension screw pass through the corresponding circular opening, each of the tension screws is threadedly connected with two nuts, the prefabricated beam is lifted by the installation equipment and connected to the two H-shaped steels by multiple screws, multiple modular formworks are commonly provided with ribs, multiple floor steel bars and top bars are interspersed above the ribs, multiple floor steel bars and top bars are welded to each other, multiple longitudinal bars are welded with multiple C-shaped steel bars, multiple matching C-shaped steel bars are welded with cylinders, and the lower ends of multiple U-shaped clamps are fixedly connected with sleeves.

[0009] Preferably, the mounting device comprises a rectangular block, the upper end of the rectangular block is fixedly connected to two hanging rings, the upper end of the rectangular block is equipped with a driving motor, the end of the output shaft of the driving motor passes through the rectangular block and is fixedly connected to a cross plate, the lower end of the cross plate is provided with two sleeve components; the sleeve component comprises two vertical blocks arranged at the lower end of the cross plate, the adjacent surfaces of the two vertical blocks are connected to two rotating shafts for common rotation, the two rotating shafts are fixedly connected to a connecting rod, the lower ends of the two connecting rods are fixedly connected to a U-shaped sleeve, the front and rear sides of the two vertical blocks are fixedly connected to an arc block, the lower end of each arc block is provided with an arc groove, each arc groove is slidably connected to an arc rod, each arc rod is elastically connected to the inner wall of the corresponding arc groove by an arc spring, the lower end of each arc rod is fixedly connected to the upper end of the corresponding U-shaped sleeve, a suction air pump is provided on the cross plate, the suction air pump is connected to a connecting pipe, and multiple arc grooves are connected to the corresponding connecting pipes through a cross pipe.

[0010] Preferably, each of the U-shaped sleeves is provided with an extrusion assembly, and the extrusion assembly includes a first electromagnet arranged on the inner wall and inner bottom of the U-shaped sleeve. The inner wall and inner bottom of the U-shaped sleeve are fixedly connected to two telescopic rods, and the telescopic ends of each two matching telescopic rods are commonly fixedly connected to an extrusion plate, and each extrusion plate is elastically connected to the adjacent surface of the corresponding first electromagnet through a first spring.

[0011] Preferably, a copper wire is provided in each of the arc-shaped rods, and a conductive sheet matching the copper wire is provided on the inner wall of each of the arc-shaped slots.

[0012] Preferably, two positioning components are provided at the lower end of the horizontal plate, and the positioning components include a fixed rod arranged at the lower end of the horizontal plate, the lower end of the fixed rod is fixedly connected to a fixed plate, the lower end of the fixed plate is fixedly connected to a vertical plate, and the rear side of the vertical plate is fixedly connected to two short rods, and the rear side of the two short rods is provided with a detection groove, and infrared distance sensors are installed in the two detection grooves.

[0013] Preferably, the lower ends of the two fixed plates are fixedly connected to fixed blocks, the front sides of the two fixed blocks are provided with movable grooves, the rear inner walls of the two movable grooves are provided with second electromagnets, the two movable grooves are slidably connected with movable plates, the front sides of the two movable plates are fixedly connected to multiple cross bars, the front sides of multiple cross bars are fixedly connected to mounting plates, and the front sides of multiple mounting plates are provided with mounting grooves.

[0014] Preferably, a bolt is provided in each of the installation slots, a threaded layer is provided on the outer wall of each of the short rods, and a nut is threadedly connected to each of the short rods.

[0015] Preferably, the inner top and the inner top of each movable slot are fixedly connected with a stopper, and the rear sides of the two stoppers located above are provided with a touch delay switch.

[0016] Preferably, a snap-fit ​​assembly is provided at the slot opening of each mounting slot, and the snap-fit ​​assembly includes slots arranged at the top and bottom of the mounting slot, and a card block is slidably connected in each slot, and each card block is elastically connected to the inner wall of the corresponding slot through a second spring.

[0017] The present invention also proposes a method for installing a fully cast-in-situ concrete prefabricated beam suitable for a steel structure, comprising the following steps:

[0018] S1: T-shaped steel components are installed at both ends of the fully cast-in-place concrete precast beam, which are paired with inverted T-shaped steel brackets installed on the main beam or steel column. Studs are installed on the T-shaped steel components to ensure the connection with the post-cast concrete. The part poured into the beam is H-shaped steel, and the main structure is the inverted T-shaped steel bracket;

[0019] S2: Weld the ends of the longitudinal reinforcement at the bottom of the concrete beam to the lower flange of the T-shaped steel component, and tie the stirrups to the longitudinal reinforcement to complete the assembly of the precast beam;

[0020] S3: Modular formwork is used, and the formwork material is made of lightweight and high-strength aluminum. After assembly, it is fixed with a finished U-shaped clamp;

[0021] S4: After the assembled prefabricated beams are transported to the site, they are installed with the main structure using installation equipment;

[0022] S5: The floor slab bottom formwork is placed on the ribs picked out from the beam formwork;

[0023] S6: On-site penetration of concrete beam top reinforcement and floor slab reinforcement;

[0024] S7: Before pouring concrete, support is set up, and the bottom of the support is embedded in the sleeve preset in the precast beam below;

[0025] S8: Precast beams are poured together with the floor slab concrete.

[0026] The present invention has the following beneficial effects:

[0027] 1. Compared with existing technologies, beam stirrups, some longitudinal reinforcement, and beam formwork are prefabricated in the factory, reducing on-site workload. Concrete is not poured, reducing component mass and facilitating hoisting. Modular formwork facilitates installation and reuse. Beam concrete and floor slab concrete are poured integrally, ensuring good integrity. The beam height calculation includes slab thickness, which helps ensure lower clearance.

[0028] 2. Compared with the existing technology, the arrangement of the suction air pump and multiple U-shaped sleeves enables the cross plate to be moved above the prefabricated beam, and then the corresponding U-shaped sleeves are rotated relative to each other to bind and lift the prefabricated beam. At the same time, the installation equipment can be separated from the prefabricated beam by simply controlling the two corresponding U-shaped sleeves to rotate in opposite directions, thereby improving the installation efficiency of the prefabricated beam;

[0029] 3. Compared with the prior art, the arrangement of multiple first electromagnets and extrusion plates enables multiple extrusion blocks to squeeze the prefabricated beam each time the installation equipment inserts the prefabricated beam, thereby preventing the prefabricated beam from sliding during installation.

[0030] 4. Compared with the existing technology, the setting of the infrared distance sensor allows multiple bolts to directly sense the corresponding two mounting holes for fixation when the mounting holes on the prefabricated beam are aligned with the mounting holes of the T-shaped steel component, thereby facilitating the rapid alignment and pre-fixation of the prefabricated beam and the T-shaped steel component. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural schematic diagram of a fully cast-in-situ concrete prefabricated beam suitable for steel structures proposed by the present invention;

[0032] Figure 2 for Figure 1 Middle AA section;

[0033] Figure 3 for Figure 1 Middle BB cross section;

[0034] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at C in the middle;

[0035] Figure 5 for Figure 2 Schematic diagram of the enlarged structure at D in the middle;

[0036] Figure 6 for Figure 3 Schematic diagram of the enlarged structure at E in the middle;

[0037] Figure 7 for Figure 3 Schematic diagram of the enlarged structure at F in the middle;

[0038] Figure 8 The connection structure diagram of T-shaped steel parts and H-shaped steel parts;

[0039] Figure 9 It is a structural diagram of a T-shaped steel corbel;

[0040] Figure 10 This is a schematic diagram of the structure after the T-shaped steel components are tied with the longitudinal reinforcement and stirrups;

[0041] Figure 11 for Figure 10 A partial enlarged view of the

[0042] Figure 12 It is a structural diagram of the modular template;

[0043] Figure 13 This is a structural diagram of the modular template after being fixed by a U-shaped clamp;

[0044] Figure 14 For modular templates and Figure 10 Schematic diagram of the structure after the parts are fixed;

[0045] Figure 15 This is a structural diagram of the precast beam;

[0046] Figure 16 This is a schematic diagram of the connection between precast beams and ribs;

[0047] Figure 17 for Figure 16 A partial enlarged view of

[0048] Figure 18This is a structural diagram of the top reinforcement of the beam and the floor slab reinforcement;

[0049] Figure 19 for Figure 18 A partial enlarged view of the

[0050] Figure 20 Schematic diagram of the connection between the support system and the precast beam;

[0051] Figure 21 for Figure 20 A partial enlarged view of the

[0052] Figure 22 Schematic diagram of the structure of the sleeve;

[0053] Figure 23 for Figure 20 A partial enlarged view of the .

[0054] In the figure: 1 rectangular block, 2 hanging ring, 3 driving motor, 4 rotating rod, 5 horizontal plate, 6 suction pump, 7 connecting pipe, 8 vertical block, 9 rotating shaft, 10 connecting rod, 11 U-shaped sleeve, 12 fixed rod, 13 vertical plate, 14 first electromagnet, 15 first spring, 16 infrared distance sensor, 17 arc block, 18 arc spring, 19 arc groove, 20 horizontal tube, 21 arc rod, 22 conductive sheet, 23 copper wire, 24 telescopic rod, 25 extrusion plate, 26 fixed plate, 2 7 short rod, 28 bolt, 29 fixed block, 30 movable slot, 31 second electromagnet, 32 clamping block, 33 movable plate, 34 stopper, 35 touch delay switch, 36 cross bar, 37 nut, 38 mounting plate, 39 mounting slot, 40 clamping slot, 41 second spring, 42 rib, 43 H-shaped steel, 44 T-shaped steel component, 45 inverted T-shaped steel corbel, 46 stirrups, 47 longitudinal reinforcement, 48 modular formwork, 49 U-shaped clamp, 50 floor slab reinforcement, 51 sleeve. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0056] Reference Figure 1-Figure 23A fully cast-in-situ concrete precast beam suitable for steel structures includes two H-shaped steels 43. Adjacent sides of the two H-shaped steels 43 are welded with inverted T-shaped steel brackets 45. A precast beam body is arranged between the two inverted T-shaped steel brackets 45. The precast beam body includes multiple modular templates 48. The multiple modular templates 48 are each provided with a snap groove. The multiple modular templates 48 are mutually clamped through the snap groove. The lower ends of the multiple modular templates 48 are welded with U-shaped clamps 49. T-shaped steel components 44 are provided in the modular templates 48 on both sides of the left side. Multiple longitudinal bars 47 are welded together on the two T-shaped steel components 44. Multiple longitudinal bars 47 are welded together on the multiple longitudinal bars 47. Multiple stirrups 46 are welded together on the multiple longitudinal bars 47. The multiple longitudinal bars 47, stirrups 46 and the two T-shaped steel components 44 constitute a steel cage.

[0057] Among them, each U-shaped clamp 49 is provided with a hole, the left and right sides of the modular template 48 are provided with side ribs, and the two side ribs are provided with multiple circular openings. A tension screw is provided in each hole, and the left and right sides of each tension screw pass through the corresponding circular openings. Each tension screw is threaded with two nuts. After the prefabricated beam is lifted by the installation equipment, it is connected to the two H-shaped steels 43 through multiple screws. Ribs 42 are commonly provided on multiple modular templates 48, and multiple floor steel bars 50 and top bars are interspersed above the ribs 42. Multiple floor steel bars 50 and top bars are welded to each other with longitudinal bars 47 and stirrups 46. Multiple C-shaped steel bars are welded to the multiple longitudinal bars 47, and cylinders are welded between multiple matching C-shaped steel bars. The lower ends of multiple U-shaped clamps 49 are fixedly connected with sleeves 51.

[0058] Among them, the installation equipment includes a rectangular block 1, the upper end of the rectangular block 1 is fixedly connected to two hanging rings 2. When hoisting, the hook of the hoisting equipment is passed through the hanging ring 2. A drive motor 3 is installed on the upper end of the rectangular block 1. The end of the output shaft of the drive motor 3 passes through the rectangular block 1 and is fixedly connected to a horizontal plate 5. The lower end of the horizontal plate 5 is provided with two sleeve components; the sleeve component includes two vertical blocks 8 arranged at the lower end of the horizontal plate 5. The adjacent surfaces of the two vertical blocks 8 are connected to two rotating shafts 9 for common rotation. The two rotating shafts 9 are fixedly connected to a connecting rod 10. The lower ends of the two connecting rods 10 are fixedly connected to a U-shaped sleeve 11. The front and rear sides of the two vertical blocks 8 are fixed It is connected with an arc block 17, and an arc groove 19 is provided at the lower end of each arc block 17. An arc rod 21 is slidably connected in each arc groove 19. Each arc rod 21 is elastically connected to the inner wall of the corresponding arc groove 19 through an arc spring 18. The lower end of each arc rod 21 is fixedly connected to the upper end of the corresponding U-shaped sleeve 11. A suction air pump 6 is provided on the horizontal plate 5. The suction air pump 6 is connected with a connecting pipe 7. Multiple arc grooves 19 are connected to the corresponding connecting pipes 7 through a horizontal pipe 20. The suction air pump 6 can inject gas into the arc groove 19 and can also extract the gas in the arc groove 19, thereby controlling the rotation of multiple U-shaped sleeves 11.

[0059] Among them, each U-shaped sleeve 11 is provided with an extrusion assembly, which includes a first electromagnet 14 arranged on the inner wall and inner bottom of the U-shaped sleeve 11. The inner wall and inner bottom of the U-shaped sleeve 11 are fixedly connected to two telescopic rods 24. The telescopic ends of each two matching telescopic rods 24 are jointly fixedly connected with an extrusion plate 25. The extrusion plate 25 is supported by a magnetic material. After the first electromagnet 14 is energized, it repels the adjacent surfaces of the corresponding extrusion plate 25 with the same polarity. Each extrusion plate 25 is elastically connected to the adjacent surface of the corresponding first electromagnet 14 through a first spring 15. A copper wire 23 is provided in each arc rod 21, and a conductive sheet 22 that matches the copper wire 23 is provided on the inner wall of each arc groove 19. An external power supply is provided on the horizontal plate 5. The external power supply, the copper wire 23, the two conductive sheets 22 and the multiple first electromagnets 14 form a loop through wires.

[0060] Among them, two positioning components are provided at the lower end of the horizontal plate 5, and the positioning component includes a fixed rod 12 arranged at the lower end of the horizontal plate 5, the lower end of the fixed rod 12 is fixedly connected to the fixed plate 26, the lower end of the fixed plate 26 is fixedly connected to the vertical plate 13, and the rear side of the vertical plate 13 is fixedly connected to two short rods 27, and the rear sides of the two short rods 27 are provided with detection grooves, and infrared distance sensors 16 are installed in the two detection grooves. A control switch is provided to control the power on and off of the infrared distance sensor 16, and a controller is provided. The infrared distance sensor 16 generates an electrical signal and transmits it to the controller. When the signal reaches the trigger signal, the controller controls the multiple second electromagnets 31 to be energized.

[0061] Among them, the lower ends of the two fixed plates 26 are fixedly connected to fixed blocks 29, the front sides of the two fixed blocks 29 are provided with movable grooves 30, the rear inner walls of the two movable grooves 30 are provided with second electromagnets 31, and the two movable grooves 30 are slidably connected with movable plates 33, the movable plates 33 are supported by magnetic materials, and the second electromagnets 31 are isotropically repelled from the adjacent surfaces of the movable plates 33 after being energized, the front sides of the two movable plates 33 are fixedly connected to multiple cross bars 36, the front sides of multiple cross bars 36 are fixedly connected to mounting plates 38, the front sides of multiple mounting plates 38 are provided with mounting grooves 39, each mounting groove 39 is provided with a bolt 28, the outer wall of each short rod 27 is provided with a threaded layer, each short rod 27 is threadedly connected with a nut 37, each short rod 27 is aligned with the corresponding bolt 28, and the threaded layer on the short rod 27 is the same as the threaded layer on the corresponding bolt 28.

[0062] Among them, the inner top and inner top of each movable slot 30 are fixedly connected with a block 34, and the rear sides of the two upper blocks 34 are provided with a touch delay switch 35. The notch of each mounting slot 39 is provided with a snap assembly, and the snap assembly includes a slot 40 arranged at the inner top and inner bottom of the mounting slot 39. A block 32 is slidably connected in each slot 40. Each block 32 is elastically connected to the inner wall of the corresponding slot 40 through a second spring 41. Each second spring 41 is conductive, and the external power supply, the touch delay switch 35 and multiple second springs 41 form a loop through wires.

[0063] The present invention also proposes a method for installing a fully cast-in-situ concrete prefabricated beam suitable for a steel structure, comprising the following steps:

[0064] S1: T-shaped steel members 44 are installed at both ends of the fully cast-in-place concrete precast beam to match the inverted T-shaped steel brackets 45 installed on the main beam or steel column. Studs are installed on the T-shaped steel members 44 to ensure the connection with the post-cast concrete. The part poured into the beam is H-shaped steel 43, and the main structure is the inverted T-shaped steel bracket 45;

[0065] S2: Weld the end of the longitudinal reinforcement 47 at the bottom of the concrete beam to the lower flange of the T-shaped steel component 44, and tie the stirrups 46 and the longitudinal reinforcement 47 together, thereby completing the assembly of the precast beam;

[0066] S3: Modular templates 48 are used. The template material is made of lightweight and high-strength aluminum, which is easy to install and reuse. After assembly, they are fixed with finished U-shaped clamps 49;

[0067] S4: After the assembled prefabricated beams are transported to the site, they are installed with the main structure using installation equipment;

[0068] S5: The floor bottom formwork is placed on the rib 42 that is picked out from the beam formwork;

[0069] S6: On-site penetration of concrete beam top reinforcement and floor slab reinforcement 50;

[0070] S7: Before pouring concrete, supports are set up. The bottom of the supports are embedded in the sleeve 51 preset in the lower precast beam. The support system can be set up after the precast beam is installed and is not limited to pouring floor concrete, thus achieving the purpose of rapid construction.

[0071] S8: Precast beams are poured together with the floor slab concrete.

[0072] The functional principle of the present invention can be explained through the following operation mode: when hoisting the precast beam, the hook of the crane is hung on the two hanging rings 2, and then the cross plate 5 is moved above the precast beam so that the multiple U-shaped sleeves 11 are respectively located on the front and rear sides of the precast beam. At this time, the two suction air pumps 6 are started to inject air into the multiple arc-shaped grooves 19;

[0073] When the gas is injected into the multiple arc-shaped grooves 19, the gas in each arc-shaped groove 19 increases and the gas pressure increases, thereby causing the corresponding arc-shaped rod 21 to rotate downward, causing the corresponding two U-shaped sleeves 11 to rotate downward, so that the precast beam is located between the corresponding two U-shaped sleeves 11;

[0074] When the arc rod 21 rotates to the extreme position, the copper wire 23 will contact the corresponding two conductive sheets 22, so that the corresponding two first electromagnets 14 are energized. After the multiple first electromagnets 14 are energized, each first electromagnet 14 will generate a repulsive force on the corresponding extrusion plate 25, so that the multiple extrusion plates 25 are tightly squeezed on the front and back sides and bottom of the prefabricated beam, thereby preventing the prefabricated beam from sliding during the hoisting process (due to the prefabricated beam and the metal material, when the U-shaped sleeve 11 is set on the periphery of the prefabricated beam, the multiple extrusion plates 25 will be adsorbed on the prefabricated beam. When the first electromagnet 14 is energized, the pressure of the extrusion plates 25 on the prefabricated beam will be increased, thereby increasing the friction between the prefabricated beam and the extrusion plates 25);

[0075] After the prefabrication is completed, the center of the cross plate 5 and the center of the prefabricated beam are on the same vertical line, so that the multiple bolts 28 are aligned with the corresponding mounting holes. At this time, the lifting equipment is started to lift the prefabricated beam, and the drive motor 3 can be controlled to operate so that the two ends of the prefabricated beam are aligned with the main structures on both sides;

[0076] When the two ends of the precast beam are slightly aligned with the T-shaped steel component 44 and the inverted T-shaped steel bracket 45, the multiple infrared distance sensors 16 can be activated. At this time, the mounting holes at the two ends of the precast beam are not aligned with the mounting holes on the T-shaped steel. At this time, the infrared rays generated by the infrared distance sensors 16 will be blocked by the T-shaped steel, so that the second electromagnet 31 will not be energized. At this time, the staff needs to control the lifting equipment to drive the crossbeam to move continuously and make fine adjustments until the infrared rays emitted by the infrared distance sensors 16 can pass through the two mounting holes and illuminate the bolts 28;

[0077] At this time, the distance detected by the infrared distance sensor 16 reaches a trigger signal transmitted to the controller, and the controller controls the corresponding second electromagnet 31 to be energized, so that the second electromagnet 31 produces a repulsive force on the movable plate 33, causing the two movable plates 33 to move forward, thereby allowing the corresponding bolts 28 to pass through the corresponding two mounting holes and become blocked. At this time, the operator only needs to turn the nut 37 so that the nut 37 is separated from the short rod 27 and is threadedly connected to the corresponding bolt 28;

[0078] It is worth mentioning that when the bolt 28 moves forward, the electrical signal generated by the infrared distance sensor 16 changes, thereby de-energizing the second electromagnet 31. Then, due to the inertia of the movable plate 33, the bolt 28 can pass through the corresponding mounting hole, and the movable plate 33 will contact the touch delay switch 35.

[0079] After the movable plate 33 contacts the touch delay switch 35, the multiple second springs 41 are energized. After the multiple second springs 41 are energized, each coil generates a magnetic field, and the magnetic fields generated by every two adjacent wire weights are in opposite directions. Every two adjacent wire weights attract each other, thereby causing the second springs 41 to contract and the card block 32 to enter the card slot 40. When the nut 37 is tightened on the bolt 28, the staff can push the mounting plate 38 backward.

[0080] When the prefabricated beam is installed, the suction air pump 6 can be started again to extract the gas in the multiple arc grooves 19, so that the gas in the multiple arc grooves 19 is reduced and the air pressure is reduced. Under the elastic action of the arc spring 18, the multiple U-shaped sleeves 11 are rotated upward. At this time, the cross plate 5 can be removed by using the lifting equipment to separate the installation equipment from the prefabricated beam.

[0081] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A fully cast-in-situ concrete prefabricated beam suitable for a steel structure, comprising two H-shaped steels (43), characterized in that: Adjacent sides of the two H-shaped steels (43) are welded with inverted T-shaped steel brackets (45), a prefabricated beam body is arranged between the two inverted T-shaped steel brackets (45), the prefabricated beam body comprises a plurality of modular templates (48), a buckle groove is arranged in each of the plurality of modular templates (48), the plurality of modular templates (48) are mutually buckled through the buckle groove, a U-shaped clamp (49) is welded at the lower end of each of the plurality of modular templates (48), a T-shaped steel component (44) is arranged in each of the modular templates (48) on the left side, a plurality of longitudinal bars (47) are welded together on the two T-shaped steel components (44), a plurality of stirrups (46) are welded together on the plurality of longitudinal bars (47), the plurality of longitudinal bars (47), the stirrups (46) and the two T-shaped steel components (44) form a steel cage.

2. The fully cast-in-situ concrete prefabricated beam suitable for steel structure according to claim 1, characterized in that: Each of the U-shaped clamps (49) is provided with a hole, and the left and right sides of the modular formwork (48) are provided with side ribs, and the two side ribs are provided with multiple circular openings. Each of the hollows is provided with a tension screw, and the left and right sides of each tension screw penetrate the corresponding circular opening, and each of the tension screws is threadedly connected with two nuts. The prefabricated beam is lifted by the installation equipment and connected to the two H-shaped steels (43) by multiple screws. Ribs (42) are commonly provided on the multiple modular formworks (48), and multiple floor steel bars (50) and top bars are inserted above the ribs (42). The multiple floor steel bars (50) and the top bars are welded to the longitudinal bars (47) and the stirrups (46). Multiple C-shaped steel bars are welded to the multiple longitudinal bars (47), and cylinders are welded between the multiple matching C-shaped steel bars. The lower ends of the multiple U-shaped clamps (49) are fixedly connected with sleeves (51).

3. The fully cast-in-situ concrete prefabricated beam suitable for steel structure according to claim 2, characterized in that: The installation device comprises a rectangular block (1), the upper end of the rectangular block (1) is fixedly connected to two hanging rings (2), the upper end of the rectangular block (1) is installed with a driving motor (3), the output shaft end of the driving motor (3) passes through the rectangular block (1) and is fixedly connected to a horizontal plate (5), and the lower end of the horizontal plate (5) is provided with two sleeve components; The sleeve assembly comprises two vertical blocks (8) arranged at the lower end of the horizontal plate (5); the adjacent surfaces of the two vertical blocks (8) are connected to two rotating shafts (9) for common rotation; the two rotating shafts (9) are fixedly connected to connecting rods (10); the lower ends of the two connecting rods (10) are fixedly connected to U-shaped sleeves (11); the front and rear sides of the two vertical blocks (8) are fixedly connected to arc blocks (17); the lower end of each arc block (17) is provided with an arc groove (19); each arc block (17) is fixedly connected to the upper end of the arc block (19); The arc-shaped grooves (19) are all slidably connected with arc-shaped rods (21), and each of the arc-shaped rods (21) is elastically connected to the inner wall of the corresponding arc-shaped groove (19) through an arc-shaped spring (18). The lower end of each arc-shaped rod (21) is fixedly connected to the upper end of the corresponding U-shaped sleeve (11). A suction air pump (6) is provided on the horizontal plate (5), and a connecting pipe (7) is connected to the suction air pump (6). The plurality of arc-shaped grooves (19) are connected to the corresponding connecting pipes (7) through a horizontal pipe (20).

4. The fully cast-in-situ concrete prefabricated beam suitable for steel structure according to claim 3, characterized in that: Each of the U-shaped sleeves (11) is provided with an extrusion assembly, the extrusion assembly comprising a first electromagnet (14) arranged on the inner wall and the inner bottom of the U-shaped sleeve (11), the inner wall and the inner bottom of the U-shaped sleeve (11) are fixedly connected to two telescopic rods (24), the telescopic ends of each two matched telescopic rods (24) are commonly fixedly connected to an extrusion plate (25), and each extrusion plate (25) is elastically connected to the adjacent surface of the corresponding first electromagnet (14) via a first spring (15).

5. The fully cast-in-situ concrete prefabricated beam suitable for steel structure according to claim 3, characterized in that: A copper wire (23) is arranged inside each of the arc-shaped rods (21), and a conductive sheet (22) matching the copper wire (23) is arranged on the inner wall of each of the arc-shaped grooves (19).

6. The fully cast-in-situ concrete prefabricated beam suitable for steel structure according to claim 3, characterized in that: The lower end of each of the transverse plates (5) is provided with two positioning components, and the positioning components include a fixing rod (12) arranged at the lower end of the transverse plate (5), the lower end of the fixing rod (12) is fixedly connected to a fixing plate (26), the lower end of the fixing plate (26) is fixedly connected to a vertical plate (13), the rear side of the vertical plate (13) is fixedly connected to two short rods (27), the rear sides of the two short rods (27) are provided with detection grooves, and the two detection grooves are installed with infrared distance sensors (16).

7. The fully cast-in-situ concrete prefabricated beam suitable for steel structure according to claim 6, characterized in that: The lower ends of the two fixed plates (26) are fixedly connected to fixed blocks (29), the front sides of the two fixed blocks (29) are provided with movable grooves (30), the rear inner walls of the two movable grooves (30) are provided with second electromagnets (31), the two movable grooves (30) are slidably connected with movable plates (33), the front sides of the two movable plates (33) are fixedly connected to a plurality of cross bars (36), the front sides of the plurality of cross bars (36) are fixedly connected to mounting plates (38), and the front sides of the plurality of mounting plates (38) are provided with mounting grooves (39).

8. The fully cast-in-situ concrete prefabricated beam suitable for steel structure according to claim 7, characterized in that: A bolt (28) is arranged in each installation groove (39), a threaded layer is arranged on the outer wall of each short rod (27), and a nut (37) is threadedly connected to each short rod (27).

9. The fully cast-in-situ concrete prefabricated beam suitable for steel structure according to claim 7, characterized in that: The inner top and the inner top of each movable groove (30) are fixedly connected with a stopper (34), and the rear sides of the two stoppers (34) located at the top are provided with a touch delay switch (35).

10. The fully cast-in-situ concrete prefabricated beam suitable for steel structure according to claim 7, characterized in that: A buckle assembly is provided at the slot opening of each of the installation slots (39), and the buckle assembly comprises a buckle slot (40) arranged at the top and bottom of the installation slot (39), and a clamping block (32) is slidably connected in each of the buckle slots (40), and each of the buckle blocks (32) is elastically connected to the inner wall of the corresponding buckle slot (40) via a second spring (41).

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