A concrete bridge component main reinforcement auxiliary reinforcement integrated positioning and welding platform and an operating method thereof

Abstract

The application discloses a concrete bridge component main reinforcement auxiliary reinforcement integrated positioning and welding platform and an operating method thereof, and relates to the technical field of building construction equipment. The platform comprises a cradle and a welding mechanism. The cradle comprises a base, a web side frame and a cantilever rod for supporting the main reinforcement. The welding mechanism comprises a moving seat with a transverse guide rail and a lifting cross beam. The lifting cross beam is connected to a positioning mechanism through a two-way spring floating mechanism. The positioning mechanism comprises a positioning seat, a positioning pull plate and a positioning hook driven by a telescopic cylinder. The positioning pull plate is provided with a trumpet-shaped positioning groove. A welding gun is arranged below the positioning seat. During operation, the positioning pull plate penetrates into the mesh formed by the main reinforcement and the auxiliary reinforcement and pushes the auxiliary reinforcement on one side. The positioning hook is retracted to force the auxiliary reinforcement to be tightly pulled against the main reinforcement. The welding gun is lifted to perform spot welding. The application is self-adaptive to the bending deviation of the reinforcement by means of the floating mechanism. The gap between the main reinforcement and the auxiliary reinforcement is effectively eliminated by pushing and pulling, automatic positioning and welding are realized, the labor intensity is greatly reduced, and the construction efficiency and the welding quality are significantly improved.

Description

Technical Field

[0001] This invention belongs to the technical field of steel reinforcement preparation for concrete bridge components, specifically relating to an integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components and its operation method. Background Technology

[0002] Box girders are important components of concrete bridges. During the prefabrication of box girders, steel reinforcement jigs are typically used to position and tie the main and secondary reinforcement bars. The secondary reinforcement bars often employ C-shaped or frame-type stirrups. Due to the bending deformation of the steel bars after cutting and processing, a large gap often forms between the main and secondary reinforcement bars after they overlap on the jig. If only simple wire binding is used for fixation, the reinforcement bars are prone to loosening or displacement during subsequent concrete pouring, compromising the effective connection and stability of the structure. Therefore, before binding, it is usually necessary to manually spot weld the overlaps of the main and secondary reinforcement bars to pre-fix them, eliminating gaps and maintaining relative positional stability.

[0003] Currently, spot welding mainly relies on manual hand-held welding torches. Workers need to frequently pull the main and secondary reinforcement bars to eliminate the gaps between them. Due to the long main reinforcement bars and the large number of lapped secondary reinforcement bars, the labor intensity is extremely high. Furthermore, manual welding is inefficient, and the welding quality is greatly affected by human factors, making it difficult to meet the high requirements of construction efficiency and precision in modern bridge construction. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies, such as low efficiency, high labor intensity, and difficulty in adapting to the bending of reinforcing bars and adjusting the gap, by providing an integrated positioning welding platform with a high degree of automation, adaptability to reinforcing bar deviations, and automatic extrusion and spot welding of main and secondary reinforcing bars.

[0005] The specific technical solution adopted in this invention is as follows:

[0006] A concrete bridge component main and secondary reinforcement integrated positioning and welding platform includes a jig for tying the reinforcement. The jig includes a base and a web side frame. Multiple cantilever rods for supporting the main reinforcement are spaced apart on the inclined surface of the web side frame. A welding mechanism is also provided on the outside of the web side frame. The welding mechanism includes a movable seat and a lifting beam mounted on the movable seat. The lifting beam is connected to a positioning mechanism via a floating mechanism. The floating mechanism has a degree of freedom to move laterally along the lifting beam. A welding torch is mounted on the positioning mechanism. The positioning mechanism includes a positioning seat and a positioning pull plate. The positioning seat has a degree of freedom to translate relative to the lifting beam in the horizontal and vertical directions via the floating mechanism. The positioning pull plate is provided with positioning claws and positioning grooves that engage with the main reinforcement.

[0007] The movable seat has the freedom to translate along the length of the frame by means of a transverse slide rail set on the ground.

[0008] The lifting beam is engaged with the movable seat by means of a lifting guide column. A telescopic lifting seat is provided between the lifting guide column and the lifting beam. The telescopic lifting seat includes a lifting platform and a telescopic platform. The telescopic platform has a degree of freedom of movement relative to the lifting platform by means of a propulsion telescopic cylinder, and the lifting platform is engaged with the lifting guide column by means of a gear and rack lifting mechanism.

[0009] The lifting guide column is mounted on the moving seat by means of a feeding mechanism. The feeding mechanism includes a feeding seat and a feeding guide rail. The feeding guide rail is arranged perpendicular to the transverse slide rail. The lifting guide column is slidably mounted on the feeding guide rail by means of the feeding seat.

[0010] The lifting platform is also provided with a limit rod, which is arranged parallel to the lifting beam, and both ends of the limit rod extend beyond the ends of the lifting beam. The two sides of the web side frame are respectively provided with a limit groove along the vertical direction, and the limit rod can be inserted into the limit groove to form a limit fit.

[0011] The floating mechanism includes a floating lower seat that slides with the lifting beam, a floating upper seat on the floating lower seat, a vertical guide rail on the floating lower seat, the floating upper seat being inserted into the guide rail and a spring being fitted on a set of guide rails of the floating upper seat, the floating upper seat being elastically connected to the floating lower seat by means of the spring; a floating connecting seat on the floating upper seat is connected to the positioning pull plate, the floating connecting seat also being elastically connected to the floating upper seat by means of the guide rail and the spring.

[0012] The welding torch is slidably mounted on the positioning seat by means of a lifting welding seat. The welding torch has the freedom to slide up and down relative to the positioning seat by means of a welding telescopic cylinder. The welding torch is positioned below the positioning pull plate.

[0013] The positioning hook is slidably mounted on the positioning pull plate in a hook-shaped structure. The positioning hook is also connected to a positioning telescopic cylinder by means of a horizontal pull plate. The positioning hook moves toward the bottom of the positioning groove by means of the pulling of the positioning telescopic cylinder. The horizontal pull plate and the positioning hook are elastically connected by a spring.

[0014] The positioning groove has a funnel-shaped structure.

[0015] An operation method for an integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components, implemented based on the integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components, includes the following steps:

[0016] S1. After placing the main reinforcement on the cantilever, place the frame-shaped stirrups, which serve as secondary reinforcements, against the web side frame and align them with the pre-reserved slots on the upper and lower sides of the web side frame, so that the secondary reinforcements are spaced evenly and the main reinforcements are in contact with the outer side of the secondary reinforcements.

[0017] S2. The moving seat moves the welding mechanism to the gap between the columns of the two adjacent web side frames to be welded. The moving seat moves towards the main reinforcement and secondary reinforcement. The main reinforcement passes into the positioning groove. The upper and lower sides of the positioning groove pass through the mesh gap formed by the overlap of the main reinforcement and secondary reinforcement, so that the positioning hook extends to the inside of the mesh.

[0018] S3. After the positioning pull plate is inserted to the predetermined depth, drive the moving mechanism on the lifting beam to make the floating mechanism move along the direction of the transverse main reinforcement, so that the positioning pull plate pushes the secondary reinforcement on one side.

[0019] S4. Then the positioning hooks on the positioning plate retract toward the main reinforcement, and with the help of the positioning hooks, the secondary reinforcement abuts against the main reinforcement.

[0020] S5. Raise the welding torch and perform spot welding at the contact point between the main reinforcement and the secondary reinforcement to complete the integral positioning welding.

[0021] The beneficial effects of this invention are:

[0022] The equipment of this invention can replace manual labor in the alignment and spot welding of reinforcing bars, reducing the labor intensity of workers and significantly improving construction efficiency. Furthermore, it has strong adaptive adjustment capabilities. By incorporating a multi-directional spring floating mechanism, it avoids hard impacts between the positioning pull plate and positioning hooks and the reinforcing bars in the direction of movement, reducing the difficulty of automatic control and preventing mechanical interference or forced pushing and pulling caused by impacts between the reinforcing bars and the equipment. Through the use of the flared positioning groove and the push-pull action with positioning hooks, the secondary reinforcing bars can move closer to the main reinforcing bars, effectively bridging the gaps between them and ensuring a tight fit. This facilitates automatic spot welding by the welding torch, resulting in stable and reliable welding quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall layout of the device of the present invention;

[0024] Figure 2 This is a schematic diagram showing the engagement of the upper limit rod and the limit groove from a top-down view.

[0025] Figure 3 This is a schematic diagram of the welding mechanism of the present invention;

[0026] Figure 4 A schematic diagram showing the coordination between the positioning mechanism and the floating mechanism with the main and secondary reinforcement bars;

[0027] Figure 5 This is a schematic diagram of a floating mechanism;

[0028] In the attached diagram: 1. Moving seat; 101. Transverse slide rail; 2. Lifting crossbeam; 3. Lifting guide column; 31. Lifting platform; 32. Telescopic platform; 33. Push telescopic cylinder; 34. Feed seat; 35. Feed guide rail; 311. Limiting rod; 4. Floating mechanism; 41. Floating lower seat; 42. Floating upper seat; 43. Guide rail; 44. Floating connecting seat; 5. Positioning mechanism; 51. Positioning seat; 52. Positioning pull plate; 521. Positioning groove; 53. Positioning hook; 531. Positioning telescopic cylinder; 54. Transverse pull plate; 6. Welding torch; 61. Lifting welding seat; 611. Welding telescopic cylinder; 7. Fixture frame; 71. Base; 72. Web side frame; 721. Limiting groove; 73. Cantilever rod; 8. Main reinforcement; 9. Secondary reinforcement. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0030] Specific implementation examples Figure 1 As shown, the present invention is an integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components, including a jig 7 for tying reinforcement bars. The jig 7 includes a base 71 and a web side frame 72. Multiple cantilever rods 73 for supporting main reinforcement bars 8 are arranged at intervals on the inclined surface of the web side frame 72. A welding mechanism is also provided on the outside of the web side frame 72. The welding mechanism includes a movable seat 1 and a lifting beam 2 arranged on the movable seat 1. The lifting beam 2 is connected to a positioning mechanism 5 by means of a floating mechanism 4. The floating mechanism 4 has the freedom to move laterally along the lifting beam 2. A welding torch 6 is provided on the positioning mechanism 5. The positioning mechanism 5 includes a positioning seat 51 and a positioning pull plate 52. The positioning seat 51 has the freedom to translate relative to the lifting beam 2 in the horizontal and vertical directions by means of the floating mechanism 4. A positioning hook 53 is provided on the positioning pull plate 52. A positioning groove 521 that clamps and cooperates with the main reinforcement bar 8 is also provided on the positioning pull plate 52.

[0031] The welding platform of this invention is set on one side of the jig 7. Before welding, steel reinforcement components are manually laid on the jig 7. After the steel reinforcement of the box girder base 71 of the bridge is tied, the main longitudinal reinforcement 8 of the web is laid. The main reinforcement 8 is supported in place by the cantilever rod 73. Then, the secondary reinforcement 9 is placed on the web side frame 72. The top and bottom of the web side frame 72 are respectively provided with slots for positioning the secondary reinforcement 9. The top and bottom sides of the frame-type secondary reinforcement 9 can be inserted into the slots to complete the positioning. Figure 1 As shown, the main reinforcement 8 is located outside the secondary reinforcement 9. Since the secondary reinforcement 9 has been cut and bent, even after it is placed in place, a gap may easily remain between the secondary reinforcement 9 and the main reinforcement 8.

[0032] This invention utilizes a positioning pull plate 52 that passes through the gap between the main rib 8 and the secondary rib 9. The secondary rib 9 is hooked and pulled by a positioning claw 53. In conjunction with the positioning groove 521 on the positioning pull plate 52, the main rib 8 is pushed and abutted, so that the main rib 8 and the secondary rib 9 are abutted. At this time, the main rib 8 is located at the bottom of the positioning groove 521, and the welding point position is fixed. The welding gun 6 can then weld according to the predetermined position, which helps to unify the welding point quality.

[0033] Furthermore, the movable seat 1 has the freedom to translate along the length of the frame 7 by means of a transverse slide rail 101 set on the ground.

[0034] By utilizing the transverse sliding rail 101 set on the ground, the moving seat 1 has a wide range of degrees of freedom to move along the length of the frame 7, which makes it convenient for the welding platform of the present invention to work on bridge steel mesh of different lengths and multiple main reinforcement 8 and secondary reinforcement 9 lap joints without the need for manual equipment, thereby improving the welding continuity after a single reinforcement placement and increasing work efficiency.

[0035] Furthermore, such as Figure 1 As shown, the lifting beam 2 forms a lifting engagement with the movable seat 1 via the lifting guide column 3. A telescopic lifting seat is provided between the lifting guide column 3 and the lifting beam 2. The telescopic lifting seat includes a lifting platform 31 and a telescopic platform 32. The telescopic platform 32 has a degree of freedom of movement relative to the lifting platform 31, extending forward or retracting backward, via the propulsion telescopic cylinder 33. The lifting platform 31 forms a lifting engagement with the lifting guide column 3 via a gear and rack lifting mechanism.

[0036] Furthermore, such as Figure 1 As shown, the lifting guide column 3 is mounted on the moving seat 1 by means of a feeding mechanism. The feeding mechanism includes a feeding seat 34 and a feeding guide rail 35. The feeding guide rail 35 is arranged perpendicular to the transverse slide rail 101. The lifting guide column 3 is slidably mounted on the feeding guide rail 35 by means of the feeding seat 34.

[0037] The positioning mechanism 5 of this invention has the freedom to move laterally relative to the jig 7 via the lifting beam 2. The vertical movement of the positioning mechanism 5 relative to the jig 7 is achieved through the cooperation of the lifting guide column 3 and the telescopic lifting seat. The feeding mechanism allows the positioning mechanism 5 to initially approach or move away from the jig 7, facilitating its positioning and placement. Through this movement and coordination, the positioning mechanism 5 can flexibly adapt its position to the reinforcing bars on the jig 7, facilitating smooth welding operations.

[0038] Furthermore, such as Figure 1 and Figure 2As shown, the lifting platform 31 is also provided with a limit rod 311. The limit rod 311 is arranged parallel to the lifting beam 2, and both ends of the limit rod 311 extend beyond the ends of the lifting beam 2. The two sides of the column of the web side frame 72 are respectively provided with a limit groove 721 along the vertical direction. The limit rod 311 can be inserted into the limit groove 721 to form a limit fit.

[0039] Because the lifting guide column 3 is relatively high and is connected to the moving seat 1 by a feeding mechanism with sliding degrees of freedom, when the telescopic platform 32 of the telescopic lifting seat extends and the positioning pull plate 52 pushes against the main rib 8, the reaction force on the lifting guide column 3 may cause the device to shift in position, affecting the subsequent welding quality.

[0040] By connecting the limiting rod 311 to the limiting groove 721, the lifting platform 31 and the lifting guide column 3 are temporarily fixed to the web side frame 72. The telescopic platform 32 is used to complete the relatively precise feeding movement of the subsequent positioning mechanism 5, preventing the lifting guide column 3 from shifting when the positioning pull plate 52 pushes the main reinforcement 8, ensuring that the main reinforcement 8 can be pushed into place in the feeding direction. Furthermore, with the limiting cooperation of the limiting rod 311 and the limiting groove 721, the position of the positioning pull plate 52 is based on the preset limiting groove 721 of the web side frame 72, which helps to improve the quality of the welded steel mesh cage.

[0041] Furthermore, such as Figure 5 As shown, the floating mechanism 4 includes a floating lower seat 41 that slides with the lifting beam 2. A floating upper seat 42 is provided on the floating lower seat 41. A vertical guide rail 43 is provided on the floating lower seat 41. The floating upper seat 42 is inserted into the guide rail 43, and a spring is fitted on a set of guide rails 43 of the floating upper seat 42. The floating upper seat 42 is elastically connected to the floating lower seat 41 by means of the spring. A floating connecting seat 44 is provided on the floating upper seat 42. The floating connecting seat 44 is connected to the positioning pull plate 52. The floating connecting seat 44 is also elastically connected to the floating upper seat 42 by means of the guide rail 43 and the spring.

[0042] The floating mechanism 4 has the freedom to move laterally along the lifting beam 2. When the positioning groove 521 contacts the main rib 8, the floating lower seat 41 of the floating mechanism 4 moves along the lifting beam 2 to the side of the secondary rib 9 under the drive of the drive motor. To avoid the deformation of the secondary rib 9 causing the actual position to shift, the positioning mechanism 5 can be adjusted by adjusting the preset program so that the theoretical position of the secondary rib 9 is 2-4 cm more advanced, ensuring that the positioning pull plate 52 can abut against the secondary rib 9. At this time, the floating lower seat 41 is displaced relative to the floating upper seat 42, so that the floating lower seat 41 can continue to complete the redundant length according to the predetermined program. At the same time, the spring between the floating lower seat 41 and the floating upper seat 42 undergoes elastic deformation, preventing the positioning pull plate 52 from excessively pushing the secondary rib 9. Under the premise of ensuring effective contact between the secondary rib 9 and the positioning pull plate 52, the secondary rib 9 is prevented from undergoing greater deformation. Then, the positioning telescopic cylinder 531 of the positioning hook 53 retracts to reliably pull the secondary rib 9, ensuring effective contact between the main rib 8 and the secondary rib 9.

[0043] Furthermore, such as Figure 3 and Figure 4 As shown, the welding torch 6 is mounted on the positioning seat 51 by means of the lifting welding seat 61. The welding torch 6 has the freedom to slide up and down relative to the positioning seat 51 by means of the lifting welding seat 61. The welding torch 6 is positioned below the positioning pull plate 52.

[0044] The welding torch 6 is positioned below the positioning seat 51 via the lifting welding base 61 and has the freedom to slide up and down. This enables the positioning and welding to be performed in separate steps. During the process of the positioning mechanism 5 pushing the main reinforcement 8 and tightening the secondary reinforcement 9, the welding torch 6 is in a low position to avoid interfering with the movement of the reinforcement; after the positioning is completed and locked, the welding torch 6 rises to complete the spot welding.

[0045] Furthermore, such as Figure 3 and Figure 4 As shown, the positioning claw 53 is slidably mounted on the positioning pull plate 52 with a hook-shaped structure. The positioning claw 53 is also connected to the positioning telescopic cylinder 531 by means of the horizontal pull plate 54. The positioning claw 53 moves towards the bottom of the positioning groove 521 by means of the pulling of the positioning telescopic cylinder 531. The horizontal pull plate 54 and the positioning claw 53 are elastically connected by means of a spring.

[0046] The positioning pull plate 52 is provided with a groove to support the sliding of the horizontal pull plate 54 and the positioning hook 53, and at the same time to accommodate the spring to avoid interference with the steel bar, so as to facilitate the spring to transmit the movement between the horizontal pull plate 54 and the positioning hook 53, and ensure that the positioning hook 53 can be accurately pulled or reversed to reset.

[0047] like Figure 3 and Figure 4As shown, the side lengths of the two sides of the positioning groove 521 are not equal, with the lower side being longer than the upper side, in order to accommodate the inclined secondary rib 9 and prevent the positioning pull plate 52 and the secondary rib 9 from failing to effectively abut when the positioning groove 521 and the main rib 8 are not properly inserted.

[0048] The horizontal pull plate 54 and the positioning hook 53 are connected by a spring. At the same time, the stroke of the positioning telescopic cylinder 531 can be increased through program design, so as to achieve elastic contact between the positioning hook 53 and the secondary rib 9 while ensuring the tension on the secondary rib 9, thereby improving the contact reliability between the secondary rib 9 and the main rib 8.

[0049] like Figure 4 As shown, the horizontal tie plate 54 and the positioning hook 53 are elastically connected by a spring, which can be adapted to the inclined setting of the secondary rib 9, and facilitates the improvement of the stability of the tie.

[0050] Furthermore, such as Figure 3 and Figure 4 As shown, the positioning groove 521 has a funnel-shaped structure. To reduce frictional loss between the positioning groove 521 and the main rib 8, a wear-resistant pad or roller is provided at the bottom of the positioning groove 521.

[0051] The positioning groove 521 has a large opening and a small bottom, which allows the positioning mechanism 5 to smoothly guide the main reinforcement 8 into the groove bottom even if the main reinforcement 8 has a certain vertical offset or bending when it is connected to the main reinforcement 8. At the same time, the floating structure can absorb the displacement of the positioning structure caused by this, eliminating the need to readjust the height of the lifting beam 2. This reduces the accuracy requirements for aligning the positioning mechanism 5 with the reinforcement, simplifies the automatic control of the equipment, and improves the success rate of the positioning mechanism 5's insertion, making the welding process smoother and more reliable.

[0052] Furthermore, the positioning pull plate 52 can be tilted downwards or upwards, and similarly, the telescopic cylinder 531 can be tilted adaptively so that the opening of the positioning groove 521 is tilted. With the lifting and lowering of the telescopic lifting seat, welding operations can be performed on the main ribs located inside when multiple parallel longitudinal main ribs are set on the same plane, and the tilting of the positioning pull plate 52 can avoid the main ribs located on the outside.

[0053] This invention also includes a method for operating a concrete bridge component main reinforcement and secondary reinforcement integrated positioning and welding platform, comprising the following steps:

[0054] S1. After placing the main reinforcement 8 on the cantilever rod 73, place the frame-shaped stirrups, which serve as secondary reinforcement 9, against the web side frame 72 and align them with the pre-reserved slots on the upper and lower sides of the web side frame 72, so that the secondary reinforcement 9 are spaced evenly and the main reinforcement 8 contacts the outer side of the secondary reinforcement 9.

[0055] S2. The movable seat 1 moves the welding mechanism to the gap between the columns of the two adjacent web side frames 72 to be welded. The movable seat 1 moves towards the main reinforcement 8 and the secondary reinforcement 9. The main reinforcement 8 passes into the positioning groove 521. The upper and lower sides of the positioning groove 521 pass through the mesh gap formed by the overlap of the main reinforcement 8 and the secondary reinforcement 9, so that the positioning hook 53 extends into the inside of the mesh.

[0056] S3. After the positioning plate 52 is inserted to the predetermined depth, drive the moving mechanism on the lifting beam 2 so that the floating mechanism 4 moves along the direction of the transverse main rib 8, so that the positioning plate 52 pushes the secondary rib 9 on one side.

[0057] S4. Then the positioning hook 53 on the positioning pull plate 52 retracts towards the main reinforcement 8, and with the help of the positioning hook 53, the secondary reinforcement 9 abuts against the main reinforcement 8.

[0058] S5. The welding torch 6 rises and performs spot welding at the contact point between the main rib 8 and the secondary rib 9 to complete the integral positioning welding.

[0059] In step S2, after the moving seat 1 moves the welding mechanism to the gap between the columns of the two adjacent web side frames 72 to be welded, the lifting beam 2 is raised above the web side frame 72 by means of the telescopic lifting seat. Then the feeding mechanism moves forward so that the limiting rod 311 is aligned with the limiting groove 721. Then the limiting rod 311 and the lifting beam 2 descend with the telescopic lifting seat, so that the limiting rod 311 is inserted into the limiting groove 721, and the positioning is completed.

[0060] In the subsequent welding, the welding operation of multiple main reinforcement 8 and secondary reinforcement 9 welding nodes can be completed simply by moving the telescopic lifting seat up or down according to the set program. There is no need to readjust the position of the lifting guide column 3. After the welding of the main reinforcement 8 and secondary reinforcement 9 nodes between the columns of two adjacent web side frames 72 is completed, the telescopic lifting seat moves up so that the limiting rod 311 disengages from the limiting groove 721, and the next station can be moved and welded.

[0061] The method provided by this invention eliminates the need for manual adjustment of the rebar position, solving the problems of frequent bending, manual straightening of the rebar, and time-consuming and labor-intensive single-point operation required by traditional manual welding. It greatly reduces the labor intensity of workers and realizes the automated positioning and welding of the main rebar 8 and secondary rebar 9.

Claims

1. A concrete bridge component main and secondary reinforcement integrated positioning and welding platform, comprising a jig (7) for tying the reinforcement, the jig (7) comprising a base (71) and a web side frame (72), wherein a plurality of cantilever rods (73) for supporting the main reinforcement (8) are spaced apart on the inclined surface of the web side frame (72), characterized in that: A welding mechanism is also provided on the outside of the web side frame (72). The welding mechanism includes a movable seat (1) and a lifting beam (2) provided on the movable seat (1). The lifting beam (2) is connected to a positioning mechanism (5) by means of a floating mechanism (4). The floating mechanism (4) has a degree of freedom to move laterally along the lifting beam (2). A welding torch (6) is provided on the positioning mechanism (5). The positioning mechanism (5) includes a positioning seat (51) and a positioning pull plate (52). The positioning seat (51) has a degree of freedom to translate relative to the lifting beam (2) in the horizontal and vertical directions by means of the floating mechanism (4). A positioning hook (53) is provided on the positioning pull plate (52). A positioning groove (521) is also provided on the positioning pull plate (52) to clamp and cooperate with the main reinforcement (8).

2. The integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components according to claim 1, characterized in that: The movable seat (1) has the freedom to translate along the length of the frame (7) by means of the transverse slide rail (101).

3. The integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components according to claim 2, characterized in that: The lifting beam (2) forms a lifting engagement with the moving seat (1) through the lifting guide column (3). A telescopic lifting seat is provided between the lifting guide column (3) and the lifting beam (2). The telescopic lifting seat includes a lifting platform (31) and a telescopic platform (32). The telescopic platform (32) has a degree of freedom of movement relative to the lifting platform (31) by means of the propulsion telescopic cylinder (33). The lifting platform (31) forms a lifting engagement with the lifting guide column (3) through the lifting mechanism.

4. The integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components according to claim 3, characterized in that: The lifting guide column (3) is mounted on the moving seat (1) by means of a feeding mechanism. The feeding mechanism includes a feeding seat (34) and a feeding guide rail (35). The feeding guide rail (35) is arranged perpendicular to the transverse slide rail (101). The lifting guide column (3) is slidably mounted on the feeding guide rail (35) by means of the feeding seat (34).

5. The integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components according to claim 3, characterized in that: The lifting platform (31) is also provided with a limit rod (311). The limit rod (311) is parallel to the lifting beam (2), and the two ends of the limit rod (311) extend beyond the two ends of the lifting beam (2). The two sides of the column of the web side frame (72) are respectively provided with a limit groove (721) along the vertical direction. The limit rod (311) can be inserted into the limit groove (721) to form a limit fit.

6. The integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components according to claim 1, characterized in that: The floating mechanism (4) includes a floating lower seat (41) that slides with the lifting beam (2). A floating upper seat (42) is provided on the floating lower seat (41). A vertical guide rail (43) is provided on the floating lower seat (41). The floating upper seat (42) is inserted on the guide rail (43), and a spring is fitted on a set of guide rails (43) of the floating upper seat (42). The floating upper seat (42) is elastically connected to the floating lower seat (41) by means of the spring. A floating connecting seat (44) is provided on the floating upper seat (42). The floating connecting seat (44) is connected to the positioning pull plate (52). The floating connecting seat (44) is also elastically connected to the floating upper seat (42) by means of the guide rail (43) and the spring.

7. The integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components according to claim 1, characterized in that: The welding torch (6) is slidably mounted on the positioning seat (51) by means of the lifting welding seat (61). The welding torch (6) has the freedom to slide up and down relative to the positioning seat (51) by means of the welding telescopic cylinder (611). The welding torch (6) is located below the positioning pull plate (52).

8. The integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components according to claim 1, characterized in that: The positioning hook (53) is slidably mounted on the positioning pull plate (52) in a hook-shaped structure. The positioning hook (53) is also connected to the positioning telescopic cylinder (531) by means of the horizontal pull plate (54). The positioning hook (53) moves towards the bottom of the positioning groove (521) by means of the pulling of the positioning telescopic cylinder (531). The horizontal pull plate (54) and the positioning hook (53) are elastically connected by means of a spring.

9. The integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components according to claim 1, characterized in that: The positioning groove (521) has a funnel-shaped structure.

10. An operation method for an integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components, based on the integrated positioning and welding platform for main and secondary reinforcement bars of concrete bridge components as described in claim 1, characterized in that: Includes the following steps: S1. After placing the main reinforcement (8) on the cantilever rod (73), place the frame-shaped stirrups (9) on the web side frame (72) and align them with the slots reserved on the upper and lower sides of the web side frame (72) so that the secondary reinforcement (9) are spaced evenly and the main reinforcement (8) contacts the outer side of the secondary reinforcement (9). S2. The moving seat (1) moves the welding mechanism to the gap between the columns of the two adjacent web side frames (72) to be welded. The moving seat (1) moves towards the main reinforcement (8) and the secondary reinforcement (9). The main reinforcement (8) passes into the positioning groove (521). The upper and lower sides of the positioning groove (521) pass through the mesh gap formed by the overlap of the main reinforcement (8) and the secondary reinforcement (9), so that the positioning hook (53) extends into the inside of the mesh. S3. After the positioning plate (52) is inserted to the predetermined depth position, drive the moving mechanism on the lifting beam (2) so that the floating mechanism (4) moves along the direction of the transverse main reinforcement (8) so that the positioning plate (52) pushes the secondary reinforcement (9) on one side. S4. Then the positioning hook (53) on the positioning plate (52) retracts toward the main reinforcement (8), and with the help of the positioning hook (53), the secondary reinforcement (9) abuts against the main reinforcement (8); S5. The welding torch (6) rises and spot welds are performed at the contact point between the main reinforcement (8) and the secondary reinforcement (9) to complete the integral positioning welding.

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