Prefabricated box girder steel bar component construction method and device based on stirrup bending

Abstract

The invention provides a prefabricated box girder steel bar component construction method and device based on stirrup bending. The method comprises the steps that according to the design size, an upper row of longitudinal bars and a lower row of longitudinal bars are arranged in order; transverse bars are inserted into the bottoms of the longitudinal bars in the lower row, and the transverse bars are welded to the longitudinal bars in the lower row; the transverse bars are bent into closed stirrups according to the design size requirement, the inner top walls of the stirrups are attached to the longitudinal bars in the upper row, and the lap joints of the two ends of the stirrups are welded; and the longitudinal bars in the upper row are welded with the stirrups. The transverse bars are inserted into the outer portions of the two rows of arranged longitudinal bars, the steel bar blocks are manufactured in the mode of forming stirrups through welding and bending, industrial standardized equipment can be conveniently used for production, meanwhile, the high-precision steel bar meshes and the steel bar blocks are obtained, the overall quality of steel bar components is improved, the mechanical production mode is adopted, and the production cost is reduced. The production efficiency can be greatly improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The present invention relates to the field of prefabricated box girder construction, and in particular to a method and a device for constructing prefabricated box girder steel bar components based on stirrup bending. Background Art

[0002] With the increase in my country's transportation demand and the rapid development of road and bridge construction technology, many large continuous bridges have adopted prefabricated box girder technology in recent years. Prefabricated box girders are widely used in domestic high-grade highways due to their light structure, small building height, less reinforcement and fast construction speed.

[0003] At present, the most common construction method at the box girder reinforcement construction site is to manually carry the reinforcement to the outer formwork of the box girder for positioning, tying or welding. The construction efficiency is relatively low, and it is difficult to ensure the production cycle of the box girder reinforcement. Due to the large size of the box girder, a lot of manpower is required, which is a labor-intensive operation, which invisibly increases the safety risk of the construction site. Since the construction site is often open-air, the reinforcement construction is easily restricted by bad weather, resulting in a construction window period. At the same time, due to the difficulty in ensuring the technical level of the workers, the quality of the box girder reinforcement construction is also difficult to ensure. The mechanization and automation degree of the current cast-in-place box girder construction process and method is not high, and the construction quality is also difficult to control. Therefore, a prefabricated box girder reinforcement component construction method based on mesh assembly and its equipment are proposed to solve the above problems. Summary of the invention

[0004] The main purpose of the present invention is to provide a method and device for constructing prefabricated box girder steel bar components based on bending stirrups, so as to solve the problems that traditional prefabricated box girder steel bar construction generally adopts manual loose binding, which has the problems of intensive operators, high labor intensity, poor working environment and low construction quality.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a method for constructing prefabricated box girder steel bar components based on stirrup bending, the method comprising: S1. Arrange the upper and lower rows of longitudinal reinforcements neatly according to the design dimensions; S2. Insert transverse reinforcement at the bottom of the lower row of longitudinal reinforcement and weld the transverse reinforcement to the lower row of longitudinal reinforcement; S3. Bend the transverse reinforcement into closed stirrups according to the design size requirements, make the inner top wall of the stirrups fit with the upper row of longitudinal reinforcements, and weld the overlaps at both ends; S4. Weld the upper row of longitudinal reinforcement to the stirrups; S5, pull the upper and lower rows of longitudinal bars for a distance, and repeat steps S2-S4 until all stirrups are installed; S6. Install hook bars on stirrups; The production of the steel bar block is completed through the above steps.

[0006] In a preferred embodiment, the transverse reinforcement bending method in step S3 is secondary bending, specifically: firstly, the transverse reinforcement is bent into a U shape, and then it is bent into a closed stirrup by secondary bending.

[0007] In the preferred embodiment, the longitudinal reinforcement is made of bundled straight reinforcement or disc reinforcement; The method of making bundled straight bars is as follows: first, the bundled straight bars are broken up and welded one by one to lengthen, and then the designed length is installed and cut to a fixed length to form longitudinal bars; The method of making the round steel bar is as follows: straighten the round steel bar, install the designed length and cut it to a fixed length to form the longitudinal reinforcement; The transverse reinforcement is made of round steel bars. Specifically, the round steel bars are straightened, installed and cut to the designed length to form transverse reinforcement.

[0008] In the preferred embodiment, the assembly of the longitudinal reinforcement and the transverse reinforcement is completed on the transverse reinforcement welding and bending mechanism, and the transverse reinforcement welding and bending mechanism is provided with a longitudinal reinforcement positioning mechanism and a traction mechanism, and the ends of the two rows of longitudinal reinforcements pass through the longitudinal reinforcement positioning mechanism and are connected to the traction mechanism, and the longitudinal reinforcements are pulled as a whole through the transverse reinforcement welding and bending mechanism by the traction mechanism; The transverse reinforcement welding and bending mechanism is sequentially provided with a lower row longitudinal reinforcement welding mechanism, an overlap welding mechanism and an upper row longitudinal reinforcement welding mechanism, and is also provided with a transverse reinforcement bending mechanism located below the overlap welding mechanism. When the longitudinal reinforcement passes through the transverse reinforcement welding and bending mechanism, the transverse reinforcements are inserted one by one. First, the welding work of the lower row longitudinal reinforcement and the transverse reinforcement is completed by the lower row longitudinal reinforcement welding mechanism, and then the longitudinal reinforcement and the transverse reinforcement are pulled to the bending position, and the transverse reinforcement is bent by the transverse reinforcement bending mechanism, and the overlap welding mechanism is used to weld the overlap. After completion, the longitudinal reinforcement and the transverse reinforcement are continued to be pulled to the welding position of the upper row longitudinal reinforcement, and the welding work of the upper row longitudinal reinforcement and the transverse reinforcement is completed by the upper row longitudinal reinforcement welding mechanism; Among them, the installation process of transverse reinforcement includes welding with the lower row of longitudinal reinforcement, bending welding and welding with the upper row of longitudinal reinforcement. When the transverse reinforcement enters the next process, the previous process can install the next transverse reinforcement.

[0009] The preferred solution further includes the following steps: S7, separately manufacturing the bottom plate body, two groups of web plate bodies and the top plate body, and reserving the longitudinal reinforcement positions in the overlapping areas during assembly; S8, hoisting the bottom plate body, two sets of belly plate bodies and the top plate body into the assembly frame in sequence, and assembling them into shape by welding; S9, then insert the corresponding longitudinal reinforcement into the reserved longitudinal reinforcement position in the overlapped area and tie or weld them; S10. Tie or weld chamfered stirrups between two sets of web plates and top plates; S11. Finally, install the positioning steel mesh according to the drawings, and insert the corrugated pipe and prestressed steel bars in the positioning steel mesh in sequence; The above steps are used to manufacture steel bar parts.

[0010] Prefabricated box girder reinforcement component manufacturing equipment based on stirrup bending, including: The longitudinal reinforcement material preparation and initial positioning conveying mechanism completes the longitudinal reinforcement material preparation and conveying one by one, and divides the longitudinal reinforcement into two rows at the end to complete the initial positioning of the longitudinal reinforcement; The transverse reinforcement welding and bending mechanism is connected to the longitudinal reinforcement material preparation initial positioning and conveying mechanism, and is used to pull two rows of longitudinal reinforcements through itself, and weld and bend the inserted transverse reinforcements; A transverse reinforcement processing device is connected to the transverse reinforcement welding and bending mechanism, used for processing transverse reinforcements of required sizes and inserted into the transverse reinforcement welding and bending mechanism; The mesh connection platform is used to receive the finished steel bar blocks.

[0011] In the preferred embodiment, the longitudinal reinforcement material preparation initial positioning conveying mechanism comprises a plurality of material preparation conveying mechanisms arranged at equal distances, and a plurality of longitudinal reinforcement feeding mechanisms are arranged alternately at the end of the material preparation conveying mechanism; The material preparation conveying mechanism includes a sprocket, a conveying chain with a transmission sleeve on the sprocket, and a plurality of longitudinal rib positioning frames equidistantly arranged outside the conveying chain. The top of the longitudinal rib positioning frame is V-shaped. The sprocket is driven by a motor, and the longitudinal ribs are conveyed to the end one by one through the longitudinal rib positioning frame. The longitudinal reinforcement feeding mechanism includes a column and a lifting and feeding assembly arranged on both sides of the column. The two lifting and feeding assemblies are respectively located on both sides of the end of the material preparation and conveying mechanism. The lifting and feeding assembly includes a lifting slide arranged on the side of the column, a lifting slide slidably arranged on the lifting slide, a lifting electric cylinder arranged on the side of the column and the output end connected to the lifting slide, a lifting arm connected to the lifting slide, and an electric conveying wheel arranged on the lifting arm. The longitudinal reinforcement is divided into two rows by the different heights of the two lifting arms.

[0012] In the preferred embodiment, the transverse reinforcement welding and bending mechanism comprises a support frame, a longitudinal reinforcement positioning mechanism is arranged on the front side of the support frame, a transverse reinforcement installation platform and a transverse reinforcement bending mechanism are arranged on the bottom crossbeam of the support frame in sequence, a lower row of longitudinal reinforcement welding mechanism, a lap joint welding mechanism and an upper row of longitudinal reinforcement welding mechanism are hoisted on the top of the support frame in sequence, wherein the lower row of longitudinal reinforcement welding mechanism is located above the transverse reinforcement installation platform, the lap joint welding mechanism is located above the transverse reinforcement bending mechanism, a traction movable platform is arranged on the back side of the support frame, and a traction mechanism that can pass through the support frame is movably arranged on the traction movable platform; The transverse reinforcement processing equipment comprises a transverse reinforcement round steel bar storage rack, a transverse reinforcement wire management frame, and a transverse reinforcement round steel bar straightening and shearing mechanism which are arranged in sequence. The discharging end of the transverse reinforcement round steel bar straightening and shearing mechanism corresponds to the transverse reinforcement installation platform.

[0013] In the preferred embodiment, the longitudinal rib positioning mechanism includes two support rods arranged at the front side of the support frame, first lifting electric cylinders respectively arranged on the two support rods, a positioning beam arranged on the output ends of the tops of the two first lifting electric cylinders, a plurality of positioning rods equidistantly arranged on the positioning beams, lifting slots arranged on the positioning rods, lifting and adjusting electric cylinders respectively arranged at both ends of the top of the positioning beams, and a partition plate arranged on the output ends of the two lifting and adjusting electric cylinders, wherein the partition plate crosses the lifting slots; The transverse reinforcement installation platform includes two second lifting electric cylinders arranged on the bottom crossbeam of the support frame and a mounting platform arranged on the top output ends of the two second lifting electric cylinders, and an automatic clamping claw for fixing the transverse reinforcement is arranged on the mounting platform; The lower row longitudinal reinforcement welding mechanism, the lap joint welding mechanism and the upper row longitudinal reinforcement welding mechanism all include two hoisting and lifting electric cylinders symmetrically arranged on the top of the support frame, a welding crossbeam hoisted on the output ends of the two hoisting and lifting electric cylinders, a slide rail arranged on the welding crossbeam, a plurality of self-driven welding carriages slidably arranged on the slide rails, and a welding head arranged at the bottom of the self-driven welding carriage, wherein the lap joint welding mechanism is carbon dioxide gas shielded welding, the lower row longitudinal reinforcement welding mechanism and the upper row longitudinal reinforcement welding mechanism are both resistance welding, and the welding rod of the welding head of the lower row longitudinal reinforcement welding mechanism is L-shaped; The transverse rib bending mechanism includes two third lifting electric cylinders arranged on the bottom crossbeam of the support frame, a bending table arranged on the output ends of the tops of the two third lifting electric cylinders, and bending components symmetrically arranged at both ends of the bending table; The bending assembly includes a transverse moving slide arranged on the bending table, a longitudinal moving slide slidably arranged on the transverse moving slide, and a bending component slidably arranged on the longitudinal moving slide; The bending component includes an L-shaped machine base slidably arranged on a longitudinal moving slide, a driving motor and a support frame arranged on the L-shaped machine base, a driving gear arranged on the output end of the driving motor, a through bearing arranged on the side wall of the L-shaped machine base, a hollow sleeve arranged through the through bearing, a driven gear arranged outside the rear end of the hollow sleeve and meshing with the driving gear, an extension rod arranged on the side of the support frame and passing through the hollow sleeve, an extension plate arranged at the other end of the extension rod, four interference blocks arranged on the other side of the extension plate and forming a cross groove therebetween, an expansion plate arranged on the outside of the hollow sleeve near the interference block side, a connecting rod arranged at the edge of the expansion plate near the interference block side, and a bending piece arranged at the other end of the connecting rod, wherein the bending piece is provided with an L-shaped bending groove corresponding to the cross groove.

[0014] In a preferred embodiment, the traction movable platform comprises a transport frame, on which a rollable roller is arranged, and on two side walls of the transport frame, stepped racks and guide rails are symmetrically arranged; The traction mechanism includes a traction frame movably mounted on two guide rails through four sliders at the bottom, a traction drive motor is arranged on the side of the traction frame, and the output shafts at both ends of the traction drive motor are connected with transmission rod assemblies, and the other end of the transmission rod assembly is drivingly connected with a traction gear meshing with a rack, and the other end of the traction frame is provided with an extension frame for passing through the support frame body, and the other end of the extension frame is provided with two rows of tightening assemblies for clamping the end of the longitudinal reinforcement, and the number of tightening assemblies in each row is multiple; The tightening assembly includes a base arranged on an extension frame, in which clamping arms hinged by shafts are symmetrically arranged, wherein one end of the shaft extends to the outside of the base and is provided with meshing clamping gears, a pushing electric cylinder is hingedly arranged on the base and the other end of the cylinder is hingedly connected to one of the clamping arms, clamping claws are arranged on opposite sides of the front ends of the two clamping arms, V-shaped grooves are arranged on opposite sides of the two clamping claws, and V-shaped anti-slip grooves are arranged on the V-shaped grooves.

[0015] The present invention provides a method and device for constructing prefabricated box girder steel bar components based on bending of stirrups. The steel bar blocks are manufactured by inserting transverse bars outside two rows of longitudinal bars and welding and bending them into stirrups, which is convenient for industrial standardized equipment to be produced. At the same time, high-precision steel mesh and steel bar blocks are obtained, and the overall quality of the steel bar components is improved. The mechanized production method can greatly improve production efficiency and reduce labor intensity. For the construction site, the method can effectively reduce the number of construction workers on site, leaving only a small number of people on site to perform modular assembly of box girder forming, which can greatly reduce the safety risks on the construction site. At the same time, since the box girder steel bar structures are all produced in factories, the construction window period can be effectively avoided, which can escort the construction period of the construction company. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the cross-sectional structure of the steel bar block of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the steel bar component of the present invention; Figure 3 It is a schematic diagram of the block structure of the steel bar component of the present invention; Figure 4 It is a schematic diagram of the steel bar block forming process of the present invention; Figure 5 It is a schematic diagram of the assembly process of steel bar parts of the present invention; Figure 6 It is a schematic diagram of the structure of the device of the present invention; Figure 7 It is a schematic diagram of the structure of the longitudinal reinforcement bundle straight reinforcement processing equipment of the present invention; Figure 8 It is a structural schematic diagram of the longitudinal steel bar disc processing equipment of the present invention; Fig. 9 This is a structural diagram of the connection between the transverse reinforcement processing equipment and the transverse reinforcement welding and bending mechanism of the present invention; Fig.10 It is a structural diagram of the connection between the material preparation and conveying mechanism and the longitudinal reinforcement feeding mechanism of the present invention; Fig.11 It is a structural diagram of the longitudinal reinforcement feeding mechanism of the present invention; Fig.12 This is a schematic diagram of the transverse reinforcement fabric of the present invention; Fig.13 This is a rear axle side structural diagram of the transverse reinforcement welding and bending mechanism of the present invention; Fig.14 This is a front-axis structural diagram of the transverse reinforcement welding and bending mechanism of the present invention; Fig.15 It is a structural diagram of the longitudinal reinforcement positioning mechanism of the present invention; Fig.16 It is the structural diagram of the welding mechanism of the present invention; Fig.17 It is a structural diagram of the transverse rib bending mechanism of the present invention; Fig.18 It is a side view of the bending component structure of the present invention; Fig.19 It is a structural diagram of the tightening assembly of the present invention; Fig. 20 It is a side view of the structure of the tightening assembly of the present invention; In the figure: longitudinal reinforcement bundle straight reinforcement processing equipment 1; longitudinal reinforcement bar material storage rack 101; longitudinal reinforcement bar ladder loading mechanism 102; longitudinal reinforcement bar conveying mechanism 103; butt welding machine 104; conveying mechanism 105 after butt welding; longitudinal reinforcement bar shearing mechanism 106; sizing and turning mechanism 107; longitudinal reinforcement round steel bar processing equipment 2; longitudinal reinforcement round steel bar storage rack 201; longitudinal reinforcement wire frame 202; longitudinal reinforcement round steel bar straightening and shearing mechanism 203; turning mechanism 204 after straightening and shearing; conveying mechanism 205 after straightening and shearing; longitudinal reinforcement material preparation initial positioning conveying mechanism 3; material preparation conveying mechanism 31; longitudinal reinforcement feeding mechanism 32; column 321; lifting slide 322; lifting slide 323 ; Lifting electric cylinder 324; lifting arm 325; electric conveying wheel 326; transverse reinforcement processing equipment 4; transverse reinforcement round steel bar storage rack 401; transverse reinforcement wire management frame 402; transverse reinforcement round steel bar straightening and shearing mechanism 403; transverse reinforcement welding and bending mechanism 5; support frame 51; longitudinal reinforcement positioning mechanism 52; support rod 521; first lifting electric cylinder 522; positioning beam 523; positioning rod 524; lifting groove 525; lifting and adjusting electric cylinder 526; partition plate 527; transverse reinforcement installation platform 53; second lifting electric cylinder 531; installation platform 532; transverse reinforcement bending mechanism 54; bending platform 541; transverse moving slide 542; longitudinal moving slide 543; bending component 544 ; L-shaped machine base 545; driving motor 5451; driving gear 5452; through bearing 5453; hollow sleeve 5454; driven gear 5455; support frame 5456; extension rod 5457; extension plate 5458; resistance block 5459; expansion plate 5460; connecting rod 5461; bending piece 5462; lower row longitudinal reinforcement welding mechanism 55; lifting and lifting electric cylinder 551; welding beam 552; slide rail 553; self-driven welding carriage 554; welding head 555; overlap welding mechanism 56; upper row longitudinal reinforcement welding mechanism 510 traction movable platform 58; transport frame 581; roller 582; guide rail 583; rack 584; traction machine Structure 59; traction frame 591; slider 592; traction drive motor 593; transmission rod assembly 594; traction gear 595; extension frame 596; tightening assembly 57; base 571; clamping arm 572; clamping claw 573; clamping gear 574; push electric cylinder 575; mobile welding device 58; electric screw 581; lifting frame 582; longitudinal moving crossbeam 583; self-driven welding carriage 584; welding machine lifting electric cylinder 585; welding head 586; welding hook 587; mesh connection platform 6; upper steel mesh 7; lower steel mesh 8; transverse reinforcement 9; longitudinal reinforcement 10; chamfered stirrups 11; positioning steel mesh 12; corrugated pipe 13; prestressed reinforcement 14. DETAILED DESCRIPTION

[0017] Example 1 like Figure 1-5 As shown, a method for constructing prefabricated box girder steel bar components based on stirrup bending comprises: S1. Arrange the upper and lower rows of longitudinal reinforcements 10 neatly according to the design dimensions; S2, inserting the transverse reinforcement 9 at the bottom of the lower row of longitudinal reinforcements 10, and welding the transverse reinforcement 9 to the lower row of longitudinal reinforcements 10; S3. Bend the transverse reinforcement 9 into a closed stirrup according to the design size requirements, so that the inner top wall of the stirrup is aligned with the upper row of longitudinal reinforcements 10, and weld the overlapped joints at both ends. The bending method of the transverse reinforcement 9 is secondary bending, specifically: first, bend the transverse reinforcement 9 into a U shape, and then bend it into a closed stirrup by secondary bending; S4, welding the upper row of longitudinal reinforcement 10 to the stirrups; S5, pulling the upper and lower rows of longitudinal reinforcements 10 for a certain distance, and repeating steps S2-S4 until all stirrups are installed; S6. Install hook reinforcement 7 on the stirrups; The production of the steel bar block is completed through the above steps.

[0018] S7, respectively manufacturing a bottom plate body 300, two groups of web plate bodies 200 and a top plate body 100, and reserving 10 longitudinal reinforcements in the overlapping area during assembly; S8, hoisting the bottom plate body 300, two sets of web plate bodies 200 and the top plate body 100 into the assembly frame in sequence, and assembling them into shape by welding; S9, then insert the corresponding longitudinal reinforcement 10 into the reserved longitudinal reinforcement 10 positions in the overlapped area, and tie or weld them; S10, tying or welding chamfered stirrups 11 between two groups of web plate bodies 200 and top plate bodies 100; S11, finally install the positioning steel mesh 12 according to the drawing, and insert the corrugated pipe 13 and the prestressed tendons 14 in the positioning steel mesh 12 in sequence; The above steps are used to manufacture steel bar parts.

[0019] Wherein, the longitudinal reinforcement 10 is made of bundled straight reinforcement or disc reinforcement; The method of making bundled straight reinforcement is as follows: first, the bundled straight reinforcement is broken up, and the bundled straight reinforcement is welded one by one to lengthen, and then the designed length is installed and cut to a fixed length to form longitudinal reinforcement 10; The method of making the round steel bar is as follows: straighten the round steel bar, install the designed length and cut it to a fixed length to form the longitudinal reinforcement 10; In addition, the transverse reinforcement 9 is made of round steel bars, specifically, the round steel bars are straightened, and are installed and cut to a fixed length to form the transverse reinforcement 9.

[0020] In the preferred embodiment, the assembly of the longitudinal reinforcement 10 and the transverse reinforcement 9 is completed on the transverse reinforcement welding and bending mechanism 5, and the transverse reinforcement welding and bending mechanism 5 is provided with a longitudinal reinforcement positioning mechanism 52 and a traction mechanism 59. The ends of the two rows of longitudinal reinforcements 10 pass through the longitudinal reinforcement positioning mechanism 52 and are connected to the traction mechanism 59, and the longitudinal reinforcements 10 are pulled as a whole through the transverse reinforcement welding and bending mechanism 5 by the traction mechanism 59; The transverse reinforcement welding and bending mechanism 5 is sequentially provided with a lower row longitudinal reinforcement welding mechanism 55, an overlap welding mechanism 56 and an upper row longitudinal reinforcement welding mechanism 510, and is also provided with a transverse reinforcement bending mechanism 54 located below the overlap welding mechanism 56. When the longitudinal reinforcement 10 passes through the transverse reinforcement welding and bending mechanism 5, the transverse reinforcements 9 are inserted one by one. First, the welding work of the lower row longitudinal reinforcement 10 and the transverse reinforcement 9 is completed by the lower row longitudinal reinforcement welding mechanism 55, and then the longitudinal reinforcement 10 and the transverse reinforcement 9 are pulled to the bending position, and the transverse reinforcement 9 is bent by the transverse reinforcement bending mechanism 54, and the overlap welding mechanism 56 is used to weld the overlap. After completion, the longitudinal reinforcement 10 and the transverse reinforcement 9 are continued to be pulled to the welding position of the upper row longitudinal reinforcement 10, and the welding work of the upper row longitudinal reinforcement 10 and the transverse reinforcement 9 is completed by the upper row longitudinal reinforcement welding mechanism 510; The installation process of the transverse reinforcement 9 includes welding with the lower row of longitudinal reinforcements 10 , bending welding and welding with the upper row of longitudinal reinforcements 10 . When the transverse reinforcement 9 enters the next process, the previous process can install the next transverse reinforcement 9 .

[0021] In this embodiment, the overlapping welding mechanism 56 is carbon dioxide gas shielded welding, the welding length meets 10d, d is the diameter of the transverse reinforcement, the lower row longitudinal reinforcement welding mechanism 55 and the upper row longitudinal reinforcement welding mechanism 510 are both resistance welding, the single-sided weld length should meet 10d, and the double-sided weld length should meet 5d, d is the diameter of the transverse reinforcement.

[0022] In the preferred solution, after the steel bar block is manufactured, a camera is set at a preset position, and the camera is used to collect images from the axial direction of the longitudinal bar 10 to detect the position of the longitudinal bar 10, compare the position of the longitudinal bar 10 with the design position, and adjust and correct the position of the longitudinal bar 10 that does not meet the requirements. This detection allows the longitudinal bars of the box girder steel bar parts of each warehouse to be aligned one by one, which is convenient for one-to-one connection.

[0023] Before detecting the position of the longitudinal reinforcement 10, a steel bar block corresponding to the first bin is made according to the design size, a camera at a fixed position captures an image of the steel bar block in the first bin, and the position of the longitudinal reinforcement 10 is identified by artificial intelligence and converted into a coordinate array, and the coordinate array of the position of the longitudinal reinforcement 10 is stored; The specific identification steps are to set a high-brightness light source around the camera, such as a high-brightness LED light source or a hernia light source, and use the high-brightness light source to illuminate the end face of the longitudinal reinforcement 10. Perform regional brightness filtering on the captured image, that is, select pixels with brightness within a range, and then track the contour of the selected area after selection, that is, perform vector ellipse fitting on the selected contour, and filter the vector fitting pattern in a circular or elliptical shape according to the image of the steel bar block in the first bin, retain the vector pattern that conforms to the end face of the longitudinal reinforcement 10, and use the midpoint of the vector pattern as the coordinate array of each longitudinal reinforcement 10. Since the camera uses a fixed-position fixed-focus lens, the image acquired by the camera is repeatable. It can assist in adjusting the position of the longitudinal reinforcement 10 to facilitate the precise docking of the longitudinal reinforcement 10 between the bins, such as group welding docking or threaded sleeve docking, to ensure construction quality.

[0024] When photographing the steel bar component in the subsequent bin, ensure that the axial position of the end of the longitudinal bar 10 is the same as the axial position of the end of the longitudinal bar 10 in the first bin, so as to avoid errors caused by perspective deformation of the image.

[0025] An image of the steel bar component in the subsequent warehouse is captured, and the position of the longitudinal reinforcement 10 is identified by artificial intelligence and converted into a coordinate array, which is then compared with the coordinate array of the position of the longitudinal reinforcement 10 in the steel bar component in the first warehouse; The longitudinal reinforcement 10 whose position error exceeds the preset value range is corrected; while the longitudinal reinforcement 10 whose error is within the preset value range does not need to be corrected.

[0026] In the preferred solution, after the assembly of the box girder steel bar components is completed, the end of the box girder steel bar components is imaged again to identify the position of the longitudinal reinforcement 10, and the longitudinal reinforcement 10 position of the first bin box girder steel bar components is compared, and the longitudinal reinforcement 10 position that does not meet the requirements is adjusted and corrected. Since the adjustment has been made in the stage of making the steel bar block, a simple algorithm can be used in this step, that is, the end face coordinates of 2 to 3 longitudinal reinforcements 10 in a steel bar block are used as the basis for comparison, thereby greatly simplifying the algorithm. If there is a problem that the error exceeds the preset value, it is only necessary to adjust the position between the steel bar blocks, thereby saving a lot of longitudinal reinforcement end adjustment and correction work. After the subsequent hoisting, the adjustment work in the casting bin is also very little, and the precision control of the longitudinal reinforcement position of the box girder steel bar components is achieved through the above steps. After measurement, through the image detection based on artificial intelligence and the correction operation of the longitudinal reinforcement 10, the workload of workers in adjusting the steel bars in the casting bin is greatly reduced, the labor intensity is reduced, and the installation efficiency of the steel bar components is improved.

[0027] Example 2 Further illustrate with reference to Example 1, Figure 6-20The structure shown, the longitudinal reinforcement material preparation initial positioning conveying mechanism 3, completes the material preparation and conveying of the longitudinal reinforcements 10 one by one, and divides the longitudinal reinforcements 10 into two upper and lower rows at the end, completing the initial positioning of the longitudinal reinforcements 10; The transverse reinforcement welding and bending mechanism 5 is connected to the longitudinal reinforcement material preparation initial positioning and conveying mechanism 3, and is used to pull two rows of longitudinal reinforcements 10 through itself, and weld and bend the inserted transverse reinforcements 9; The transverse reinforcement processing device 4 is connected to the transverse reinforcement welding and bending mechanism 5, and is used to process the transverse reinforcement 9 of the required size and insert it into the transverse reinforcement welding and bending mechanism 5; The mesh connection platform 6 is used to receive the finished steel bar blocks.

[0028] When in use, the longitudinal bars 10 are transported one by one to the feeding end of the transverse bar welding and bending mechanism 5 through the longitudinal bar preparation initial positioning and conveying mechanism 3, and the longitudinal bars 10 are arranged neatly in rows at the end. The two rows of longitudinal bars 10 are sent into the transverse bar welding and bending mechanism 5 to complete the insertion, welding and bending of the transverse bars 9, and finally the completed steel bar blocks are received by the grid connection platform 6.

[0029] In the preferred embodiment, the longitudinal reinforcement material preparation initial positioning conveying mechanism 3 comprises a plurality of equally spaced material preparation conveying mechanisms 31, and a plurality of longitudinal reinforcement material feeding mechanisms 32 are staggeredly arranged at the end of the material preparation conveying mechanism 31; The material preparation conveying mechanism 31 includes a sprocket, a conveying chain with a transmission sleeve on the sprocket, and a plurality of longitudinal rib positioning frames equidistantly arranged outside the conveying chain. The top of the longitudinal rib positioning frame is V-shaped. The sprocket is driven by a motor, and the longitudinal ribs 10 are conveyed to the end thereof one by one through the longitudinal rib positioning frame. When in use, the longitudinal reinforcement 10 is connected through the V-shaped longitudinal reinforcement positioning frame, and the sprocket and conveyor chain are driven by a motor to run and feed the material. After each longitudinal reinforcement 10 is connected, it automatically moves to the corresponding spacing to prepare for the next longitudinal reinforcement connection, so that the longitudinal reinforcement 10 is neatly arranged at the end.

[0030] The longitudinal reinforcement feeding mechanism 32 includes a column 321 and a lifting and feeding assembly arranged on both sides of the column 321. The two lifting and feeding assemblies are respectively located on both sides of the end of the material preparation and conveying mechanism 31. The lifting and feeding assembly includes a lifting slide 322 arranged on the side of the column 321, a lifting slide 323 slidingly arranged on the lifting slide 322, a lifting electric cylinder 324 arranged on the side of the column 321 and the output end connected to the lifting slide 323, a lifting arm 325 connected to the lifting slide 323, and an electric conveying wheel 326 arranged on the lifting arm 325. The longitudinal reinforcement 10 is divided into two rows by the different heights of the two lifting arms 325.

[0031] When in use, when the longitudinal reinforcement 10 reaches the quantity and position required by the design, the lifting electric cylinder 324 on one side causes the lifting arm 325 and the electric conveying wheel 326 to lift up the upper row of longitudinal reinforcements 10, and then the longitudinal reinforcement 10 continues to be conveyed through the material preparation conveying mechanism 31. After reaching the quantity and position required by the design, the lifting electric cylinder 324 on the other side causes the lifting arm 325 and the electric conveying wheel 326 to lift up the lower row of longitudinal reinforcements 10, and at the same time, the two rows of longitudinal reinforcements 10 are transmitted forward through the operation of the electric conveying wheel 326, thereby sending the longitudinal reinforcement 10 into the transverse reinforcement welding and bending mechanism 5.

[0032] In the preferred embodiment, the transverse reinforcement welding and bending mechanism 5 comprises a support frame 51, a longitudinal reinforcement positioning mechanism 52 is arranged on the front side of the support frame 51, a transverse reinforcement installation platform 53 and a transverse reinforcement bending mechanism 54 are arranged on the bottom crossbeam of the support frame 51 in sequence, a lower row longitudinal reinforcement welding mechanism 55, a lap joint welding mechanism 56 and an upper row longitudinal reinforcement welding mechanism 510 are hoisted on the top of the support frame 51 in sequence, wherein the lower row longitudinal reinforcement welding mechanism 55 is located above the transverse reinforcement installation platform 53, and the lap joint welding mechanism 56 is located above the transverse reinforcement bending mechanism 54, and a traction movable platform 58 is arranged on the back side of the support frame 51, and a traction mechanism 59 that can pass through the support frame 51 is movably arranged on the traction movable platform 58; When in use, when the two rows of longitudinal bars 10 enter the transverse bar welding and bending mechanism 5, they first need to pass through the longitudinal bar positioning mechanism 52 for positioning to ensure that the designed spacing is reached, and then the ends of the two rows of longitudinal bars 10 are clamped by the traction mechanism 59, and the traction is passed through the transverse bar welding and bending mechanism 5. When the longitudinal bars 10 reach the transverse bar installation platform 53, the traction is stopped, and the transverse bars 9 are inserted according to the designed position, and the transverse bars 9 pass through the bottom of the lower row of longitudinal bars 10, and then the transverse bars 9 and the lower row of longitudinal bars 10 are welded by the lower row of longitudinal bars welding mechanism 55. After the welding is completed, the longitudinal bars 10 are continued to be pulled and the transverse bars 9 reach the transverse bar bending mechanism 54, and the traction is stopped. When the next transverse reinforcement insertion point arrives at the transverse reinforcement installation platform 53, and when the transverse reinforcement bending mechanism 54 is bending, the transverse reinforcement installation platform 53 installs the next transverse reinforcement 9. After the transverse reinforcement 9 is bent twice by the transverse reinforcement bending mechanism 54, the overlap is welded by the overlap welding mechanism 56, and then the longitudinal reinforcement 10 is pulled again, and at the same time, the transverse reinforcement 9 reaches the welding position of the upper row of longitudinal reinforcements 10. At this time, the next transverse reinforcement 9 arrives at the transverse reinforcement bending mechanism 54, and the upper row of longitudinal reinforcements 10 and the transverse reinforcement 9 are welded by the upper row of longitudinal reinforcement welding mechanism 510. This process is repeated until all transverse reinforcements 9 are installed and the mesh is pulled onto the traction movable platform 58.

[0033] In the preferred embodiment, the longitudinal reinforcement positioning mechanism 52 includes two support rods 521 fixedly mounted on the front side of the support frame 51, first lifting electric cylinders 522 respectively arranged on the two support rods 521, a positioning beam 523 arranged on the top output ends of the two first lifting electric cylinders 522, a plurality of positioning rods 524 equidistantly arranged on the positioning beams 523, lifting grooves 525 arranged on the positioning rods 524, lifting and adjusting electric cylinders 526 respectively arranged at both ends of the top of the positioning beams 523, and a partition plate 527 arranged on the output ends of the two lifting and adjusting electric cylinders 526, the partition plate 527 crosses the lifting and adjusting grooves 525, the positioning rods 524 and the positioning beams 523 can achieve the effect of adjusting the height through the first lifting electric cylinders 522, the lifting and adjusting electric cylinders 526 adjust the height of the partition plate 527, when the two rows of longitudinal reinforcements 10 pass through the plurality of equidistantly arranged positioning rods 524 under the conveyance of the longitudinal reinforcement feeding mechanism 32, the positioning effect can be achieved through the positioning rods 524; In the preferred embodiment, the transverse reinforcement installation platform 53 includes two second lifting electric cylinders 531 arranged on the bottom crossbeam of the support frame 51 and a mounting platform 532 arranged on the top output ends of the two second lifting electric cylinders 531. The mounting platform 532 is provided with an automatic clamp for fixing the transverse reinforcement 9. The automatic clamp is a commercially available product. When the longitudinal reinforcement 10 is pulled onto the mounting platform 532, the transverse reinforcement 9 is inserted into the mounting platform 532 from the side and clamped by the automatic clamp. When the welding work is completed, the automatic clamp is released to allow the transverse reinforcement 9 to continue to move forward. The second lifting electric cylinder 531 is convenient for adjusting the height of the mounting platform 532. In the preferred embodiment, the lower row longitudinal reinforcement welding mechanism 55, the lap joint welding mechanism 56 and the upper row longitudinal reinforcement welding mechanism 510 all include two hoisting and lifting electric cylinders 551 symmetrically arranged on the top of the support frame 51, a welding crossbeam 552 hoisted on the output ends of the two hoisting and lifting electric cylinders 551, a slide rail 553 arranged on the welding crossbeam 552, a plurality of self-driven welding carriages 554 slidably arranged on the slide rail 553, and a welding head 555 arranged at the bottom of the self-driven welding carriage 554, wherein the lap joint welding mechanism 56 is carbon dioxide gas shielded welding, the lower row longitudinal reinforcement welding mechanism 55 and the upper row longitudinal reinforcement welding mechanism 510 are both resistance welding, and the welding rod of the welding head 555 of the lower row longitudinal reinforcement welding mechanism 55 is L-shaped, and the L-shaped design is convenient for avoiding interference with the upper row longitudinal reinforcement 10, and the welding height is adjusted by the hoisting and lifting electric cylinder 551, and the self-driven welding carriage 554 is independently movable on the slide rail 553 to adjust the welding position; It should be noted that the self-propelled welding carriage 554 can slide independently on the slide rail 553. This is a mature existing technology and therefore will not be described in detail again. In addition, the self-propelled welding carriage 554 is also provided with a commercially available welding spot recognition system.

[0034] In the preferred embodiment, the rib bending mechanism 54 includes two third lifting electric cylinders 546 arranged on the bottom crossbeam of the support frame 51, a bending table 541 arranged on the top output ends of the two third lifting electric cylinders 546, and bending components symmetrically arranged at both ends of the bending table 541; The bending assembly includes a transverse moving slide 542 arranged on the bending table 541, a longitudinal moving slide 543 slidably arranged on the transverse moving slide 542, and a bending component 544 slidably arranged on the longitudinal moving slide 543; The bending component 544 includes an L-shaped machine base 545 slidably arranged on the longitudinal moving slide 543, a driving motor 5451 and a support frame 5456 arranged on the L-shaped machine base 545, a driving gear 5452 arranged on the output end of the driving motor 5451, a through bearing 5453 arranged on the side wall of the L-shaped machine base 545, a hollow sleeve 5454 penetrating the through bearing 5453, a driven gear 5455 arranged outside the rear end of the hollow sleeve 5454 and meshing with the driving gear 5452, and a driven gear 5455 arranged on the side of the support frame 5456. An extension rod 5457 passing through the hollow sleeve 5454, an extension plate 5458 arranged at the other end of the extension rod 5457, four abutment blocks 5459 arranged at the other side of the extension plate 5458 and forming a cross groove therebetween, an expansion plate 5460 arranged at the outside of the hollow sleeve 5454 near the abutment block 5459, a connecting rod 5461 arranged at the edge of the expansion plate 5460 near the abutment block 5459, and a bending piece 5462 arranged at the other end of the connecting rod 5461, wherein the bending piece 5462 is provided with an L-shaped bending groove corresponding to the cross groove; When in use, when the transverse reinforcement 10 reaches the bending position of the transverse reinforcement bending mechanism 54, the bending component 544 is raised to the corresponding height by the third lifting electric cylinder 546, and the bending component 544 is moved to the bending point of the transverse reinforcement 10 by the transverse moving slide 542, and then the bending component 544 is longitudinally moved by the longitudinal moving slide 543 until the transverse reinforcement 10 is stuck in the cross grooves of the four interference blocks 5459 and the L-shaped bending groove of the bending component 5462, and then the bending component 5462 is driven to rotate by the driving motor 5451, so that the transverse reinforcement 10 is bent under the restriction of the interference block 5459, and then the bending component 544 is moved by the longitudinal moving slide 543 to make it withdraw from the transverse reinforcement 10, and the bending component 5462 is restored, and the bending component 544 is moved to the second bending point of the transverse reinforcement 10 by the transverse moving slide 542, and the above operation is repeated to complete the bending work of the transverse reinforcement 10, and then the original path can be installed and lowered.

[0035] In the preferred embodiment, the traction movable platform 58 includes a transport frame 581, on which a rollable roller 582 is disposed, and on two side walls of the transport frame 581, a stepped rack 584 and a guide rail 583 are symmetrically disposed; The traction mechanism 59 includes a traction frame 591 movably mounted on two guide rails 583 through four sliders 592 at the bottom, the cross-sections of the slider 592 and the guide rail 583 are both T-shaped, a traction drive motor 593 is arranged on the side of the traction frame 561, and the output shafts at both ends of the traction drive motor 562 are connected with transmission rod assemblies 594, and the other end of the transmission rod assembly 594 is drivingly connected with a traction gear 595 meshing with the rack 584, and the other end of the traction frame 591 is provided with an extension frame 596 for passing through the support frame 51, and the other end of the extension frame 596 is provided with two rows of tightening assemblies 57 for clamping the ends of 10 longitudinal ribs, and the number of tightening assemblies 57 in each row is multiple, and the traction drive motor 562 drives the traction gear 563 to rotate on the rack 554 to achieve the effect of traction; The tightening assembly 57 includes a base 571 arranged on an extension frame 596, and clamping arms 572 hinged by axes are symmetrically arranged in the base 571, wherein one end of the axis extends to the outside of the base 571 and is provided with a meshing clamping gear 574, and a pushing electric cylinder 575 is hingedly arranged on the base 571, and the other end of the pushing electric cylinder is hingedly connected to one of the clamping arms 572, and clamping claws 573 are arranged on opposite sides of the front ends of the two clamping arms 572, and V-shaped grooves are arranged on opposite sides of the two clamping claws 573, and V-shaped anti-slip grooves are arranged on the V-shaped grooves, and the two clamping claws 573 can be pushed to clamp and release by extending and retracting the pushing electric cylinder 575.

[0036] It should be noted that the two rows of tightening components 57 are both arranged at the front end of the extension frame 596 through adjustable screws, and the distance between the two can be adjusted as needed.

[0037] In the preferred embodiment, the transverse reinforcement processing equipment 4 includes a transverse reinforcement round steel bar storage rack 401, a transverse reinforcement wire management frame 402, and a transverse reinforcement round steel bar straightening and shearing mechanism 403 arranged in sequence. The discharging end of the transverse reinforcement round steel bar straightening and shearing mechanism 403 corresponds to the transverse reinforcement installation platform 53, so that the transverse reinforcement 9 can be directly inserted into the transverse reinforcement installation platform 53.

[0038] In the preferred embodiment, it further comprises a longitudinal bar bundle straight bar processing device 1, which is used to process the bundled straight bars into longitudinal bars 10 of required size, wherein the longitudinal bar bundle straight bar processing device 1 comprises a longitudinal bar bar material storage rack 101, a longitudinal bar bar ladder feeding mechanism 102, a longitudinal bar bar material conveying mechanism 103, a butt welding machine 104, a butt welding post-conveyoring mechanism 105, a longitudinal bar bar material shearing mechanism 106 and a sizing and turning mechanism 107 which are arranged in sequence; When in use, the bundled straight bars are scattered and placed on the longitudinal bar storage rack 101, and are sequentially transported to the butt welding machine 104 through the longitudinal bar step feeding mechanism 102 and the longitudinal bar conveying mechanism 103 for butt welding length, and then transported by the butt welding post-conveying mechanism 105 through the longitudinal bar shearing mechanism 106 to the sizing and turning mechanism 107. After being sized by the sizing and turning mechanism 107, the longitudinal bar shearing mechanism 106 performs shearing and blanking, and finally the sheared longitudinal bar is transported to the longitudinal bar preparation initial positioning conveying mechanism 3 by the straightening and shearing post-conveying mechanism 205; In the preferred embodiment, it also includes a longitudinal steel bar disc processing device 2, which is used to process the disc steel bar into the longitudinal steel bar 10 of the required size, wherein the longitudinal steel bar disc processing device 2 includes a longitudinal steel bar disc storage rack 201, a longitudinal steel bar wire arrangement frame 202, a longitudinal steel bar disc straightening and shearing mechanism 203, a straightening and shearing post-turning mechanism 204 and a straightening and shearing post-conveying mechanism 205, and the straightening and shearing post-conveying mechanism 205 is connected to the sizing and turning mechanism 107; When in use, the coiled round steel bar is hung on the longitudinal steel bar coiled round steel bar storage rack 201, and one end of the coiled round steel bar is passed through the longitudinal steel bar wire-arranging frame 202 and inserted into the longitudinal steel bar coiling straightening and shearing mechanism 203. After being straightened and cut to size by the longitudinal steel bar coiling straightening and shearing mechanism 203, it is transported to the straightening and shearing post-material turning mechanism 204 to the straightening and shearing post-material turning mechanism 205, and then transported to the size-setting and material turning mechanism 107 by the straightening and shearing post-material turning mechanism 205. The sizing and turning mechanism 107 is connected to the feeding end of the longitudinal reinforcement material initial positioning conveying mechanism 3 .

[0039] It should be noted that the equipment in the longitudinal reinforcement bundle straight reinforcement processing equipment 1, the longitudinal reinforcement disc reinforcement processing equipment 2 and the transverse reinforcement processing equipment 4 are all mature equipment in the field, so they will not be described in detail here.

[0040] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A method for constructing prefabricated box girder steel bar components based on stirrup bending, characterized in that The method includes: S1. Arrange the upper and lower rows of longitudinal reinforcements (10) in an orderly manner according to the design dimensions; S2, inserting the transverse reinforcement (9) at the bottom of the lower row of longitudinal reinforcements (10), and welding the transverse reinforcement (9) to the lower row of longitudinal reinforcements (10); S3. Bend the transverse reinforcement (9) into a closed stirrup according to the design size requirements, so that the inner top wall of the stirrup is aligned with the upper row of longitudinal reinforcement (10), and weld the overlapped parts at both ends; S4, welding the upper row of longitudinal reinforcement (10) to the stirrups; S5, pulling the upper and lower rows of longitudinal bars (10) for a certain distance, and repeating steps S2-S4 until all stirrups are installed; S6. Install hook bars (7) on the stirrups; The production of the steel bar block is completed through the above steps.

2. The method for constructing prefabricated box girder steel bar components based on stirrup bending according to claim 1 is characterized in that: The bending method of the transverse reinforcement (9) in step S3 is secondary bending, specifically: firstly, the transverse reinforcement (9) is bent into a U shape, and then it is bent into a closed stirrup by secondary bending.

3. The method for constructing prefabricated box girder steel bar components based on stirrup bending according to claim 1 is characterized in that: The longitudinal reinforcement (10) is made of bundled straight reinforcement or disc reinforcement; The method of making bundled straight bars is as follows: first, the bundled straight bars are broken up, and they are welded one by one to lengthen, and then they are installed to a designed length and cut to a fixed length to form longitudinal bars (10); The method of making the round steel bar is as follows: straighten the round steel bar, install it in the designed length, cut it to a fixed length, and form the longitudinal reinforcement (10); The transverse reinforcement (9) is made of a round steel bar, specifically, the round steel bar is straightened, and the round steel bar is installed and cut to a fixed length to form the transverse reinforcement (9).

4. The method for constructing prefabricated box girder steel bar components based on stirrup bending according to claim 1 is characterized in that: The assembly of the longitudinal reinforcement (10) and the transverse reinforcement (9) is completed on the transverse reinforcement welding and bending mechanism (5), and the transverse reinforcement welding and bending mechanism (5) is provided with a longitudinal reinforcement positioning mechanism (52) and a traction mechanism (59), and the ends of the two rows of longitudinal reinforcements (10) pass through the longitudinal reinforcement positioning mechanism (52) and are connected to the traction mechanism (59), and the longitudinal reinforcements (10) are pulled as a whole through the transverse reinforcement welding and bending mechanism (5) by the traction mechanism (59); The transverse reinforcement welding and bending mechanism (5) is sequentially provided with a lower row longitudinal reinforcement welding mechanism (55), an overlap welding mechanism (56) and an upper row longitudinal reinforcement welding mechanism (510), and is further provided with a transverse reinforcement bending mechanism (54) located below the overlap welding mechanism (56). When the longitudinal reinforcement (10) passes through the transverse reinforcement welding and bending mechanism (5), the transverse reinforcements (9) are inserted one by one. First, the lower row longitudinal reinforcement welding mechanism (55) completes the welding work of the lower row longitudinal reinforcement (10) and the transverse reinforcement (9). Then, the longitudinal reinforcement (10) and the transverse reinforcement (9) are pulled to move to the bending position. The transverse reinforcement (9) is bent by the transverse reinforcement bending mechanism (54), and the overlap welding mechanism (56) is used to weld the overlap. After completion, the longitudinal reinforcement (10) and the transverse reinforcement (9) are further pulled to move to the welding position of the upper row longitudinal reinforcement (10). The upper row longitudinal reinforcement welding mechanism (510) completes the welding work of the upper row longitudinal reinforcement (10) and the transverse reinforcement (9). The installation process of the transverse reinforcement (9) includes welding with the lower row of longitudinal reinforcements (10), bending welding and welding with the upper row of longitudinal reinforcements (10). When the transverse reinforcement (9) enters the next process, the previous process can install the next transverse reinforcement (9).

5. The method for constructing prefabricated box beam steel bar components based on stirrup bending according to any one of claims 1 to 4, characterized in that The following steps are involved: S7, respectively manufacturing a bottom plate body (300), two groups of web plate bodies (200) and a top plate body (100), and reserving longitudinal reinforcement (10) positions in the overlapping area during assembly; S8, hoisting the bottom plate body (300), two sets of belly plate bodies (200) and the top plate body (100) into the assembly frame in sequence, and assembling them into shape by welding; S9, then insert corresponding longitudinal reinforcement (10) into the reserved longitudinal reinforcement (10) in the overlapped area and tie or weld them; S10, tying or welding chamfered stirrups (11) between two groups of web plate bodies (200) and top plate bodies (100); S11, finally installing the positioning steel mesh (12) according to the drawing, and inserting the corrugated tube (13) and the prestressed steel bar (14) in the positioning steel mesh (12) in sequence; The above steps are used to manufacture steel bar parts.

6. Prefabricated box girder steel bar component manufacturing equipment based on stirrup bending, characterized by include: The longitudinal reinforcement material preparation and initial positioning conveying mechanism (3) completes the material preparation and conveying of the longitudinal reinforcements (10) one by one, and divides the longitudinal reinforcements (10) into two upper and lower rows at the end, thereby completing the initial positioning of the longitudinal reinforcements (10); The transverse reinforcement welding and bending mechanism (5) is connected to the longitudinal reinforcement material preparation initial positioning and conveying mechanism (3), and is used to pull two rows of longitudinal reinforcements (10) through itself, and to weld and bend the inserted transverse reinforcements (9); A transverse reinforcement processing device (4) is connected to the transverse reinforcement welding and bending mechanism (5), is used to process transverse reinforcements (9) of required size, and is inserted into the transverse reinforcement welding and bending mechanism (5); The mesh connection platform (6) is used to receive the finished steel bar blocks.

7. The prefabricated box girder steel bar component manufacturing equipment based on stirrup bending according to claim 6 is characterized by: The longitudinal reinforcement material preparation initial positioning conveying mechanism (3) comprises a plurality of material preparation conveying mechanisms (31) arranged at equal distances, and a plurality of longitudinal reinforcement feeding mechanisms (32) are arranged in a staggered manner at the ends of the material preparation conveying mechanisms (31); The material preparation conveying mechanism (31) comprises a sprocket, a conveying chain with a transmission sleeve mounted on the sprocket, and a plurality of longitudinal rib positioning frames equidistantly arranged outside the conveying chain, the top of the longitudinal rib positioning frame being V-shaped, the sprocket being driven by a motor, and the longitudinal ribs (10) are conveyed one by one to the end thereof through the longitudinal rib positioning frame; The longitudinal reinforcement feeding mechanism (32) comprises a column (321) and lifting and feeding assemblies arranged on both sides of the column (321), the two lifting and feeding assemblies are respectively located on both sides of the end of the material preparation and conveying mechanism (31), and the lifting and feeding assemblies comprise a lifting slide (322) arranged on the side of the column (321), a lifting slide (323) slidably arranged on the lifting slide (322), a lifting electric cylinder (324) arranged on the side of the column (321) and having an output end connected to the lifting slide (323), a lifting arm (325) connected to the lifting slide (323), and an electric conveying wheel (326) arranged on the lifting arm (325), and the longitudinal reinforcement (10) is divided into two rows by the different heights raised by the two lifting arms (325).

8. The prefabricated box girder steel bar component manufacturing equipment based on stirrup bending according to claim 6 or 7 is characterized in that: The transverse reinforcement welding and bending mechanism (5) comprises a support frame (51), a longitudinal reinforcement positioning mechanism (52) is arranged on the front side of the support frame (51), a transverse reinforcement installation platform (53) and a transverse reinforcement bending mechanism (54) are arranged in sequence on the bottom crossbeam of the support frame (51), a lower row of longitudinal reinforcement welding mechanisms (55), an overlap welding mechanism (56) and an upper row of longitudinal reinforcement welding mechanisms (510) are hoisted in sequence on the top of the support frame (51), wherein the lower row of longitudinal reinforcement welding mechanisms (55) are located above the transverse reinforcement installation platform (53), and the overlap welding mechanism (56) is located above the transverse reinforcement bending mechanism (54), and a traction movable platform (58) is arranged on the back side of the support frame (51), and a traction mechanism (59) that can pass through the support frame (51) is movably arranged on the traction movable platform (58); The transverse reinforcement processing equipment (4) comprises a transverse reinforcement round steel bar storage rack (401), a transverse reinforcement wire arrangement frame (402), and a transverse reinforcement round steel bar straightening and shearing mechanism (403) which are arranged in sequence, and the transverse reinforcement round steel bar straightening and shearing mechanism (403) corresponds to the material discharge end and the transverse reinforcement installation platform (53).

9. The prefabricated box girder steel bar component manufacturing equipment based on stirrup bending according to claim 8 is characterized by: The longitudinal reinforcement positioning mechanism (52) comprises two support rods (521) arranged at the front side of the support frame (51), first lifting electric cylinders (522) respectively arranged on the two support rods (521), a positioning beam (523) arranged on the top output ends of the two first lifting electric cylinders (522), a plurality of positioning rods (524) equidistantly arranged on the positioning beam (523), a lifting groove (525) arranged on the positioning rod (524), lifting and adjusting electric cylinders (526) respectively arranged at the top ends of the positioning beam (523), and a partition plate (527) arranged on the output ends of the two lifting and adjusting electric cylinders (526), ​​wherein the partition plate (527) crosses the lifting groove (525); The transverse reinforcement mounting platform (53) comprises two second lifting electric cylinders (531) arranged on the bottom crossbeam of the support frame (51) and a mounting platform (532) arranged on the top output ends of the two second lifting electric cylinders (531), and an automatic clamping claw for fixing the transverse reinforcement (9) is arranged on the mounting platform (532); The lower row longitudinal reinforcement welding mechanism (55), the overlap welding mechanism (56) and the upper row longitudinal reinforcement welding mechanism (510) all comprise two hoisting and lifting electric cylinders (551) symmetrically arranged through the top of the support frame (51), a welding crossbeam (552) hoisted on the output ends of the two hoisting and lifting electric cylinders (551), a slide rail (553) arranged on the welding crossbeam (552), a plurality of self-driven welding carriages (554) slidably arranged on the slide rail (553), and a welding head (555) arranged at the bottom of the self-driven welding carriage (554), wherein the overlap welding mechanism (56) is carbon dioxide gas shielded welding, the lower row longitudinal reinforcement welding mechanism (55) and the upper row longitudinal reinforcement welding mechanism (510) are both resistance welding, and the welding rod of the welding head (555) of the lower row longitudinal reinforcement welding mechanism (55) is L-shaped; The transverse rib bending mechanism (54) comprises two third lifting electric cylinders (546) arranged on the bottom crossbeam of the support frame (51), a bending table (541) arranged on the top output ends of the two third lifting electric cylinders (546), and bending components symmetrically arranged at both ends of the bending table (541); The bending assembly comprises a transverse movable slide (542) arranged on the bending table (541), a longitudinal movable slide (543) slidably arranged on the transverse movable slide (542), and a bending component (544) slidably arranged on the longitudinal movable slide (543); The bending component (544) comprises an L-shaped machine base (545) slidably arranged on the longitudinal moving slide (543), a driving motor (5451) and a support frame (5456) arranged on the L-shaped machine base (545), a driving gear (5452) arranged on the output end of the driving motor (5451), a through bearing (5453) arranged on the side wall of the L-shaped machine base (545), a hollow sleeve (5454) penetrating the through bearing (5453), a driven gear (5455) arranged outside the rear end of the hollow sleeve (5454) and meshing with the driving gear (5452), and a driven gear (5455) arranged on the side of the support frame (5456). An extension rod (5457) extending from the surface and penetrating the hollow sleeve (5454), an extension plate (5458) arranged at the other end of the extension rod (5457), four abutment blocks (5459) arranged at the other side of the extension plate (5458) and forming a cross groove therebetween, an expansion plate (5460) arranged on the outside of the hollow sleeve (5454) near the abutment block (5459), a connecting rod (5461) arranged at the edge of the expansion plate (5460) near the side of the abutment block (5459), and a bending piece (5462) arranged at the other end of the connecting rod (5461), wherein the bending piece (5462) is provided with an L-shaped bending groove corresponding to the cross groove.

10. The prefabricated box girder steel bar component manufacturing equipment based on stirrup bending according to claim 9 is characterized by: The traction movable platform (58) comprises a transport frame (581), a rollable roller (582) is arranged on the transport frame (581), and stepped racks (584) and guide rails (583) are symmetrically arranged on two side walls of the transport frame (581); The traction mechanism (59) comprises a traction frame (591) movably mounted on two guide rails (583) via four sliders (592) at the bottom, a traction drive motor (593) is arranged on the side of the traction frame (561), the output shafts at both ends of the traction drive motor (562) are connected to transmission rod assemblies (594), the other end of the transmission rod assembly (594) is drivingly connected to a traction gear (595) meshing with the rack (584), the other end of the traction frame (591) is provided with an extension frame (596) for passing through the support frame (51), and the other end of the extension frame (596) is provided with two rows of tightening assemblies (57) for clamping the ends of the longitudinal reinforcement (10), and the number of tightening assemblies (57) in each row is multiple; The tightening assembly (57) comprises a base (571) arranged on an extension frame (596), wherein clamping arms (572) hingedly connected by shafts are symmetrically arranged in the base (571), wherein one end of the shaft extends to the outside of the base (571) and is provided with a meshing clamping gear (574), and a push electric cylinder (575) is hingedly arranged on the base (571), the other end of which is hingedly connected to one of the clamping arms (572), and clamping claws (573) are arranged on opposite sides of the front ends of the two clamping arms (572), and V-shaped grooves are arranged on opposite sides of the two clamping claws (573), and V-shaped anti-slip grooves are arranged on the V-shaped grooves.

Images