A full-automatic welding and assembling platform for high-rise variable cross-section steel structure and a construction method thereof

Abstract

The application is a kind of high-rise variable cross-section steel structure full-automatic welding assembly platform and its construction method. The full-automatic welding assembly platform comprises a movable adaptive automatic fastening device, a synchronous jacking system, a steel platform system, an automatic welding operation platform and a moving platform. The steel platform system comprises an upper platform, a lower platform and a support system. The support system is placed on the ground, and the lower platform is supported by the support system. The synchronous jacking system is installed on the lower platform and drives the upper platform to lift. The movable adaptive automatic fastening device is installed on the upper platform and the lower platform respectively, and is used to automatically fasten the steel structure to be welded. The moving platform is placed on the ground and located in the support system. The automatic welding operation platform is placed on the moving platform and transported by the moving platform. The application adopts the method of assembling and jacking at the same time, has high safety during construction, wide application range, high construction efficiency, low construction cost and is convenient to popularize.

Description

Technical Field

[0001] This invention relates to the field of steel structure welding technology, and in particular to a fully automated welding and assembly platform for tall, variable cross-section steel structures and its construction method. Background Technology

[0002] With the development of science and technology, large, irregular, and towering steel structures are widely used in various fields, such as ultra-high steel chimneys with variable cross-sections. These towering structures present significant challenges to their fabrication and installation. The traditional installation method involves fabricating individual sections in a factory, transporting them to the construction site, assembling them on the ground, and then using two or more crawler cranes for multi-machine joint lifting operations after the ground assembly is complete. This method presents a series of problems related to safety, applicability, efficiency, and cost. When encountering spatially irregular steel structures, the significant centrifugal force creates numerous problems regarding lifting methods, selection of lifting points, and coordination between cranes, rendering ordinary single-machine lifting no longer widely applicable. For ultra-high towering structures, the lifting height limitations of truck cranes or crawler cranes render traditional methods unsuitable. When dealing with towering structures with large masses, large-scale lifting equipment is required, sometimes even employing unconventional methods such as dual or multi-machine lifting, reducing construction efficiency and increasing project costs. When these conditions overlap, the assembly operation undoubtedly faces even more serious risks related to safety, applicability, efficiency, and cost. Summary of the Invention

[0003] The present invention aims to overcome the shortcomings of the prior art and provides a fully automatic welding and assembly platform for tall variable cross-section steel structures and its construction method.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a fully automatic welding and assembly platform for tall variable cross-section steel structures, comprising a movable adaptive automatic fastening device, a synchronous lifting system, a steel platform system, an automated welding operation platform, and a transport platform. The steel platform system includes an upper platform, a lower platform, and a support system. The support system is placed on the ground, and the lower platform is supported by the support system. The synchronous lifting system is installed on the lower platform and drives the upper platform to rise and fall. The movable adaptive automatic fastening device is installed on the upper platform and the lower platform respectively for automatically fastening the steel structure to be welded. The transport platform is placed on the ground and located within the support system. The automated welding operation platform is placed on the transport platform and transported through the transport platform.

[0005] The automated welding platform includes a welding device, a welding track, a welding feed device, and a fine-tuning device. The welding feed device includes a welding drum, a drum bottom plate, and drum ribs. The drum bottom plate is welded to the bottom of the welding drum, and the drum ribs are circumferentially welded to the included sidewall of the welding drum and the drum bottom plate. The welding track is welded around the top outer side of the welding drum. The welding device includes a welding gun, guide pulleys, a motor, a welding housing, a visual inspection probe, an X-ray detector, and an anti-corrosion material spray gun. The guide pulleys and motor are installed inside the welding housing. The welding housing is supported on the welding track by the guide pulleys, and the guide pulleys are driven by the motor to rotate, thereby moving the welding housing along the welding track. The welding gun is connected to the welding box for welding steel structures. The visual inspection probe is connected to the welding box for checking the joint gap, longitudinal weld position, and bevel quality. The X-ray detector is connected to the welding box for non-destructive testing of the welds welded by the welding gun. The anti-corrosion material spray gun is connected to the welding box for spraying anti-corrosion material onto the welds. The fine-adjustment device is located at the bottom of the steel barrel for welding, including a fine-adjustment jack and a top support plate. The base of the fine-adjustment jack is welded to the bottom of the steel barrel for welding, and the top support plate is welded to the top of the jack rod. The top support plate moves up and down along the inner wall of the steel barrel for welding, thereby driving the steel structure welding segment inside the steel barrel to rise and fall.

[0006] In particular, the upper and lower platforms have the same structure, both including a rectangular ring of horizontal steel plates. A protective railing is provided around the top edge of the horizontal steel plate, and a Bailey beam is provided around the bottom of the horizontal steel plate. The Bailey beam consists of double-layer standard Bailey panels and connecting frames welded between the double-layer standard Bailey panels. The top of the double-layer standard Bailey panels is welded to the bottom of the horizontal steel plate.

[0007] Specifically, the support system consists of four support columns, with the tops of the four support columns fixed to the corners of the Bailey beams at the bottom of the lower platform. The support columns include steel truss columns, steel top plates, and concrete pads. The steel truss columns consist of four vertical support steel pipes arranged in a rectangular pattern. Diagonal and horizontal bars are staggered between adjacent vertical support steel pipes from top to bottom. Support bases are welded to the bottom of the vertical support steel pipes. The support bases include support steel pipes, with steel base plates welded to the bottom of the support steel pipes. Several steel ribs are welded to the circumference of the sidewall at the angle between the support steel pipes and the steel base plates. The support steel pipes are welded to the bottom of the vertical support steel pipes. The steel base plates are bolted to the concrete pads, which are anchored to the ground. The bottom of the steel top plate is welded to the top of the four vertical support steel pipes, and the top is welded to the bottom of the Bailey beams at the bottom of the lower platform.

[0008] Specifically, the movable adaptive automatic fastening device is vertically distributed along the centerline of the steel structure and includes a guide rail system, a truss system, a clamping device, and an automatic bolt fastening device. The guide rail system includes guide rail steel beams and fasteners; two guide rail steel beams are positioned opposite each other on the top sides of the horizontal steel plate and are fixed by fasteners; the truss system includes steel truss beams, a steel plate base, and moving wheels; the moving wheels are located at both ends of the bottom of the steel truss beams and roll along the guide rail steel beams; the steel plate base is fixed to the middle of the steel truss beams; the clamping device includes two semi-circular steel hoops and connecting angle plates; the middle of the outer wall of the semi-circular steel hoop is welded to the top of the steel plate base through the connecting angle plates; end plates are provided at both ends of the semi-circular steel hoop; bolts... The automatic fastening device includes fixing bolts and an automatic tightening device. A pair of fixing bolts are vertically welded to the end plate of a semi-circular steel hoop. The automatic tightening device includes a motor, a fixing sleeve, and a nut sleeve. The fixing sleeve is fixed to the end plate of the other semi-circular steel hoop. The nut sleeve is rotatably connected to one end of the fixing sleeve. One end of the fixing bolt passes through the end plate and is threaded into the nut sleeve. The motor is located at the other end of the fixing sleeve and drives the nut sleeve to rotate, guiding the fixing bolt deeper into the nut sleeve, thereby tightening the two semi-circular steel hoops. The steel structure is fixed by the two semi-circular steel hoops. The number of fixing bolts and the automatic tightening device is determined according to the weight and size of the steel structure.

[0009] Specifically, the synchronous lifting system includes jacks, upper shims, lower shims, pressure gauges, and a control system. The bottom of the upper shim is welded to the top of the jack's push rod, and the top is welded to the bottom of the Bailey beam at the bottom of the upper platform. The top of the lower shim is welded to the bottom of the jack's base, and the bottom is welded to the top of the horizontal steel plate of the lower platform. The pressure gauge is connected to the jack to measure the pressure value inside the jack's cylinder. The control system includes a control terminal and connecting lines. The control terminal is connected to the pressure gauges via connecting lines to read the pressure gauge values ​​of each jack and synchronously adjust the oil inlet and outlet of the jacks, thereby achieving the synchronous lifting function.

[0010] Specifically, the transfer platform includes a guide and limiting device, a metal conveyor belt, a transfer platform base, and a traveling gantry crane. The guide and limiting device includes a pair of limiting guide rails, which are welded to the top of the long sides of both sides of the transfer platform base. The metal conveyor belt is installed on the top of the transfer platform base and is located between the pair of limiting guide rails. The inner side of the limiting guide rails has an inner groove corresponding to the bottom plate of the steel drum. The bottom plate of the steel drum is placed on the metal conveyor belt and moves along the inner groove on both sides of the bottom plate. The outer side of the limiting guide rails has an outer groove. The longitudinal beam of the traveling gantry crane stands on the top of the transfer platform base and moves along the outer groove of the limiting guide rails. The steel structure to be welded is lifted into the steel drum for welding by the traveling gantry crane.

[0011] A construction method for a tall, variable cross-section steel structure fully automated welding and assembly platform includes the following steps:

[0012] Step 1: Site leveling and hardening;

[0013] Step 2: Install the fully automated welding and assembly platform for the tall, variable cross-section steel structure;

[0014] Step 3: The mobile gantry crane lifts the first welded section of the steel structure and hoists it into the welding drum;

[0015] Step 4: The transfer platform moves the welding drum to the welding position;

[0016] Step 5: The fine-tuning device lifts the first welded section of the steel structure to the lower platform position;

[0017] Step Six: The movable adaptive automatic fastening device on the lower platform clamps the first welded segment of the steel structure;

[0018] Step 7: The fine-tuning device is lowered back, and the welding drum returns to its position;

[0019] Step 8: The traveling gantry crane lifts the second welding segment of the steel structure and hoists it into the welding barrel. The transfer platform moves the welding barrel to the welding position. Fine-tuning is performed by the fine-tuning device to ensure the accurate connection of the welding segments of the steel structure. The appearance inspection probe inspects the connection position of the welding segments of the steel structure.

[0020] Step Nine: Welding with a welding gun;

[0021] Step 10: The weld is subjected to non-destructive testing using an X-ray inspection instrument. If the non-destructive testing fails, return to step 9; if the non-destructive testing passes, proceed to step 11.

[0022] Step 11: Apply anti-corrosion material to the weld area using an anti-corrosion material spray gun;

[0023] Step 12: Loosen the movable adaptive automatic fastening device on the lower platform and lift the fine-tuning device to lift the first welded section of the steel structure to the position of the upper platform.

[0024] Step 13: The movable adaptive automatic fastening devices on the upper and lower platforms respectively clamp the corresponding welded segments of the steel structure;

[0025] Step Fourteen: The fine-tuning device is lowered back, and the welding drum returns to its position;

[0026] Step 15: The traveling gantry crane lifts the corresponding welding segment of the steel structure and hoists it into the welding steel barrel. The transfer platform moves the welding steel barrel to the welding position. The fine-tuning device and synchronous jacking system are used to ensure the accurate docking of the steel structure welding segments. The appearance inspection probe detects the docking position of the steel structure welding segments.

[0027] Step Sixteen: Repeat steps Nine through Eleven;

[0028] Step 17: Loosen the movable adaptive automatic fastening device on the lower platform, and lift the synchronous lifting system to move the steel structure upward. Then, the movable adaptive automatic fastening device on the lower platform will clamp it.

[0029] Step 18: The fine-tuning device is lowered, and the welding drum returns to its position;

[0030] Step 19: Welding operation completed. If “Yes”, dismantle the fully automated welding and assembly platform for the tall variable cross-section steel structure; if “No”, return to Step 15.

[0031] The advantages of this invention are as follows: Compared to traditional methods, which involve assembling the steel structure on the ground and then using multiple crawler cranes for joint hoisting operations, this invention employs a simultaneous assembly and lifting method. Steel structure welded segments are transported via a transfer platform, and an automated welding platform welds these segments. During the process, a movable, adaptive, automatic fastening device secures the steel structure, while a fine-tuning device and a synchronous lifting system adjust the structure to ensure precise alignment. Furthermore, the welding device can inspect and detect flaws at the welding position before and after welding, effectively guaranteeing welding quality. This invention offers high safety during construction, a wide range of applications, high construction efficiency, low construction cost, and ease of promotion. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the fully automated welding and assembly platform structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the automated welding platform structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the welding device structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the fine-tuning device of the present invention;

[0036] Figure 5 This is a schematic diagram of the steel platform system structure of the present invention;

[0037] Figure 6 This is a schematic diagram of the Bailey beam structure of the present invention;

[0038] Figure 7 This is a schematic diagram of the support system structure of the present invention;

[0039] Figure 8 This is a schematic diagram of the movable adaptive automatic fastening device of the present invention;

[0040] Figure 9 This is a schematic diagram of the automatic tightening device of the present invention;

[0041] Figure 10 This is a schematic diagram of the synchronous lifting system structure of the present invention;

[0042] Figure 11 This is a schematic diagram of the transfer platform structure of the present invention;

[0043] Figure 12 This is a schematic diagram of the limiting guide rail structure of the present invention;

[0044] Figure 13 This is a flowchart of the construction method of the present invention;

[0045] In the picture:

[0046] 1-Movable adaptive automatic fastening device; 11-Guide rail system; 1101-Guide rail steel beam; 1102-Fastening fastener; 12-Truss system; 1201-Steel truss beam; 1202-Steel plate base; 1203-Moving wheel; 13-Clamping device; 1301-Semi-circular steel clamp; 1302-Connecting angle plate; 1303-End plate; 14-Automatic bolt fastening device; 1401-Fixing bolt; 1402-Automatic tightening device; 1403-Motor; 1404-Fixing sleeve; 1405-Nut sleeve;

[0047] 2-Synchronous lifting system; 21-Jack; 22-Upper shim; 23-Lower shim; 24-Pressure gauge; 25-Control terminal; 26-Connecting cable;

[0048] 3-Steel platform system; 31-Upper platform; 3101-Horizontal steel plate; 3102-Guardrail; 3103-Bailey beam; 3104-Double-layer standard Bailey panel; 3105-Connecting pergola; 32-Lower platform; 33-Support system; 3301-Support column; 3302-Steel truss column; 3303-Steel top plate; 3304-Concrete pad; 3305-Vertical support steel pipe; 3306-Diagonal brace; 3307-Horizontal bar; 3308-Support base; 3309-Support steel pipe; 3310-Steel base plate; 3311-Steel rib plate;

[0049] 4-Automated welding platform; 41-Welding device; 4101-Welding gun; 4102-Guide pulley; 4103-Motor; 4104-Welding housing; 4105-Visual inspection probe; 4106-X-ray detector; 4107-Anticorrosion material spray gun; 42-Welding track; 43-Welding feeding device; 4301-Welding barrel feeding device; 4302-Bottom plate of barrel; 4303-Rib plate of barrel; 44-Fine adjustment device; 4401-Fine adjustment jack; 4402-Top support plate;

[0050] 5-Transfer platform; 51-Guide limiting device; 5101-Limiting guide rail; 5102-Inner groove; 5103-Outer groove; 52-Metal conveyor belt; 53-Transfer platform base; 54-Mobile gantry crane; Detailed Implementation

[0051] The present invention will be further described below with reference to embodiments:

[0052] like Figure 1 As shown, a fully automated welding and assembly platform for a tall, variable cross-section steel structure includes a movable, adaptive, automatic fastening device 1, a synchronous lifting system 2, a steel platform system 3, an automated welding operation platform 4, and a transport platform 5.

[0053] like Figures 5-7 As shown, the steel platform system 3 includes an upper platform 31, a lower platform 32, and a support system 33. The support system 33 is placed on the ground, and the lower platform 32 is supported by the support system 33. The upper platform 31 and the lower platform 32 have the same structure, both including a rectangular ring-shaped horizontal steel plate 3101. A protective railing 3102 is provided at the top edge of the horizontal steel plate 3101, and a Bailey beam 3103 is provided at the bottom of the horizontal steel plate 3101. The Bailey beam 3103 is composed of double-layer standard Bailey panels 3104 and a connecting frame 3105 welded between the double-layer standard Bailey panels 3104. The top of the double-layer standard Bailey panels 3104 is welded to the bottom of the horizontal steel plate 3101.

[0054] The support system 33 consists of four support columns 3301, and the tops of the four support columns 3301 are fixedly connected to the corners of the Bailey beams 3103 at the bottom of the lower platform 32. The support columns 3301 include steel truss columns 3302, steel top plates 3303, and concrete pads 3304. The steel truss columns 3302 include four vertical support steel pipes 3305 arranged in a rectangular pattern. Diagonal bars 3306 and horizontal bars 3307 are staggered between adjacent vertical support steel pipes 3305 from top to bottom. Support bases 3308 are welded to the bottom of the vertical support steel pipes 3305. The support base 3308 includes a support steel pipe 3309, a steel base plate 3310 welded to the bottom of the support steel pipe, and several steel ribs 3311 welded to the circumference of the side wall at the angle between the support steel pipe 3309 and the steel base plate 3310. The support steel pipe 3309 is welded to the bottom of the vertical support steel pipe 3305. The steel base plate 3310 is bolted to the concrete pad 3304. The concrete pad 3304 is anchored to the ground. The bottom of the steel top plate 3303 is welded to the top of the four vertical support steel pipes 3305, and the top is welded to the bottom of the Bailey beam 3103 at the bottom of the lower platform 32.

[0055] like Figure 1 , Figure 10As shown, the synchronous lifting system 2 is installed on the lower platform 32 and drives the upper platform 31 to rise and fall. The synchronous lifting system 2 includes a jack 21, an upper shim 22, a lower shim 23, a pressure gauge 24, and a control system. The bottom of the upper shim 22 is welded to the top of the jack rod, and the top is welded to the bottom of the Bailey beam 3103 at the bottom of the upper platform 31. The top of the lower shim 23 is welded to the bottom of the base of the jack 21, and the bottom is welded to the top of the horizontal steel plate 3101 of the lower platform 32. The pressure gauge 24 is connected to the jack 21 to measure the pressure value in the cylinder of the jack 21. The control system includes a control terminal 25 and a connecting line 26. The control terminal 25 is connected to the pressure gauge 24 through the connecting line 26 to read the pressure gauge 24 values ​​of each jack 21 and synchronously adjust the oil inlet and outlet of the jack 21 to achieve the synchronous lifting function.

[0056] like Figure 1 , Figure 8 , Figure 9As shown, the movable adaptive automatic fastening device 1 is installed on the upper platform 31 and the lower platform 32 respectively, and is used to automatically fasten the steel structure to be welded. The movable adaptive automatic fastening device 1 is vertically distributed along the center line of the steel structure and includes a guide rail system 11, a truss system 12, a clamping device 13, and an automatic bolt fastening device 14. The guide rail system 11 includes guide rail steel beams 1101 and fasteners 1102; the two guide rail steel beams 1101 are arranged opposite each other on the top sides of the horizontal steel plate 3101 and are fastened by fasteners. 1102 is fixed; the truss system 12 includes a steel truss beam 1201, a steel plate base 1202, and moving wheels 1203; the moving wheels 1203 are located at both ends of the bottom of the steel truss beam 1201 and roll along the guide rail steel beam 1101; the steel plate base 1202 is fixed to the middle of the steel truss beam 1201; the clamping device 13 includes two semi-circular steel clamps 1301 and a connecting angle plate 1302; the middle of the outer wall of the semi-circular steel clamps 1301 is welded to the top of the steel plate base 1202 through the connecting angle plate 1302; the semi-circular steel clamps... 1301 has end plates 1303 at both ends; the automatic bolt tightening device 14 includes a fixing bolt 1401 and an automatic tightening device 1402. A pair of fixing bolts 1401 are vertically welded to the end plate 1303 of a semi-circular steel hoop 1301. The automatic tightening device 1402 includes a motor 1403, a fixing sleeve 1404, and a nut sleeve 1405. The fixing sleeve 1404 is fixed to the end plate 1303 of the other semi-circular steel hoop 1301, and the nut sleeve 1405 is rotatably connected to the fixing sleeve 1403. One end of the fixing bolt 1401 passes through the end plate 1303 and is threaded into the nut sleeve 1405. The motor 1403 is located at the other end of the fixing sleeve 1404 and drives the nut sleeve 1405 to rotate, guiding the fixing bolt 1401 to penetrate into the nut sleeve 1405, thereby tightening the two semi-circular steel hoops 1301. The steel structure is fixed by the two semi-circular steel hoops 1301. The number of fixing bolts 1401 and automatic tightening devices 1402 is determined according to the weight and size of the steel structure.

[0057] like Figure 1 , Figure 11 , Figure 12As shown, the transfer platform 5 is placed on the ground and located within the support system 33. The transfer platform 5 includes a guide and limiting device 51, a metal conveyor belt 52, a transfer platform base 53, and a traveling gantry crane 54. The guide and limiting device 51 includes a pair of limiting guide rails 5101, which are welded to the top of the long sides of both sides of the transfer platform base 53. The metal conveyor belt 52 is installed on the top of the transfer platform base 53 and is located between the pair of limiting guide rails 5101. The inner side of the limiting guide rails 5101 is provided with an inner groove 5102 corresponding to the bottom plate 4302 of the steel barrel. The steel drum bottom plate 4302 is placed on the metal conveyor belt 52 and the two sides of the steel drum bottom plate 4302 move along the inner groove 5102. The outer groove 5103 is provided on the outer side of the limiting guide rail 5101. The longitudinal beam of the traveling gantry crane 54 stands on the top of the transfer platform base 53 and moves along the outer groove 5103 of the limiting guide rail 5101. The steel structure to be welded is hoisted into the welding steel drum 4301 by the traveling gantry crane 54. The setting of the inner groove 5102 restricts the out-of-plane rotation and in-plane rotation of the welding device 43 and guides the welding device 43 to move in one direction.

[0058] like Figures 1-4As shown, the automated welding platform 4 is placed on the transfer platform 5 and transported by the transfer platform 5. The automated welding platform 4 includes a welding device 41, a welding track 42, a welding feed device 43, and a fine-tuning device 44. The welding feed device 43 includes a welding feed steel drum 4301, a steel drum bottom plate 4302, and a steel drum rib plate 4303. The steel drum bottom plate 4302 is welded to the bottom of the welding feed steel drum 4301, and the steel drum rib plate 4303 is circumferentially welded to the included angle sidewall of the welding feed steel drum 4301 and the steel drum bottom plate 4302. The welding track 42 is welded around the top outer side of the steel barrel 4301; the welding device 41 includes a welding gun 4101, a guide pulley 4102, a motor 4103, a welding box 4104, a visual inspection probe 4105, an X-ray detector 4106, and an anti-corrosion material spray gun 4107. The guide pulley 4102 and the motor 4103 are installed inside the welding box 4104. The welding box 4104 is supported on the welding track 42 by the guide pulley 4102, and the guide pulley 4102... 2. Driven by motor 4103, the welding box 4104 moves along welding track 42. Welding gun 4101 is connected to welding box 4104 for welding steel structures. Visual inspection probe 4105 is connected to welding box 4104 for checking joint gap, longitudinal weld position, and bevel quality. X-ray detector 4106 is connected to welding box 4104 for non-destructive testing of welds welded by welding gun 4101. Anti-corrosion material spray gun 4107 is connected to welding box 4104. The receiving box 4104 is used to spray anti-corrosion material onto the weld seam; the fine adjustment device 44 is located at the bottom of the welding steel barrel 4301, including a fine adjustment jack 4401 and a top support steel plate 4402. The base of the fine adjustment jack 4401 is welded to the bottom of the welding steel barrel 4301, and the top support steel plate 4402 is welded to the top of the top rod of the fine adjustment jack 4401. The top support steel plate 4402 moves up and down along the inner wall of the welding steel barrel 4301, thereby driving the steel structure welding section inside the welding steel barrel 4301 to rise and fall.

[0059] like Figure 13 As shown, a construction method for a tall, variable cross-section steel structure fully automated welding and assembly platform includes the following steps:

[0060] Step 1: Site leveling and hardening;

[0061] Step 2: Install the tall, variable cross-section steel structure fully automatic welding and assembly platform; specifically, install the movable adaptive automatic fastening device 1, synchronous lifting system 2, steel platform system 3, automated welding operation platform 4, and transfer platform 5.

[0062] Step 3: The mobile gantry crane 54 lifts the first welded steel structure segment and places it into the welding steel barrel 4301; at this time, the transport truck transports the steel structure segment to be welded to the side of the transfer platform 5;

[0063] Step 4: The transfer platform 5 transfers the welding steel drum 4301 to the welding position; specifically, the welding steel drum 4301 moves under the action of the metal conveyor belt 52.

[0064] Step 5: The fine-tuning device 44 lifts the first welded section of the steel structure to the lower platform 32; specifically, the fine-tuning jack 4401 lifts the supporting steel plate 4402, thereby driving the first welded section of the steel structure to the lower platform 32.

[0065] Step Six: The movable adaptive automatic fastening device 1 on the lower platform 32 clamps the first welded section of the steel structure; specifically, at this time, the first welded section of the steel structure is placed between the two semi-circular steel hoops 1301 on the lower platform 32, the motor 1403 drives the nut sleeve 1405 to rotate, guide the fixing bolt 1401 to penetrate into the nut sleeve 1405, and the two semi-circular steel hoops 1301 are tightened to fix the first welded section of the steel structure;

[0066] Step 7: The fine-tuning device 44 falls back, and the welding steel barrel 4301 returns to its position;

[0067] Step 8: The traveling gantry crane 54 lifts the second welding segment of the steel structure and places it into the welding steel barrel 4301. The transfer platform 5 moves the welding steel barrel 4301 to the welding position. The fine-tuning device 44 makes fine adjustments to ensure the accurate docking of the steel structure welding segments. The appearance inspection probe 4105 inspects the docking position of the steel structure welding segments. Specifically, when the second welding segment of the steel structure is transported to the welding position, the fine-tuning device 44 makes fine adjustments to its position to ensure accurate docking with the first welding segment. The appearance inspection probe 4105 moves in and out of the docking position to check the gap, the position of the longitudinal weld, and the bevel quality.

[0068] Step 9: Welding operation of welding gun 4101; Specifically, welding box 4104 moves along welding track 42 under the action of guide pulley 4102 and motor 4103, and welding gun 4101 moves with welding box 4104 and performs welding at the welding position.

[0069] Step 10: The X-ray inspection instrument 4106 performs non-destructive testing on the weld. If the non-destructive testing fails, return to step 9; if the non-destructive testing passes, proceed to step 11.

[0070] Step 11: Apply anti-corrosion material to the weld area using a 4107 anti-corrosion material spray gun;

[0071] Step 12: The movable adaptive automatic fastening device 1 on the lower platform 32 is loosened, and the fine-tuning device 44 is lifted to raise the first welded section of the steel structure to the position of the upper platform 31; specifically, the motor 1403 on the lower platform 32 drives the nut sleeve 1405 to rotate in the opposite direction, guides the fixing bolt 1401 to move back, and the two semi-circular steel hoops 1301 loosen the steel structure. At this time, the fine-tuning jack 4401 lifts the first and second welded sections welded together until the first welded section is raised to the position of the upper platform 32;

[0072] Step 13: The movable adaptive automatic fastening devices 1 on the upper platform 31 and the lower platform 32 respectively clamp the corresponding welded segments of the steel structure; specifically, the first welded segment on the upper platform 31 is clamped and fixed by two semi-circular steel hoops 1301 on it, and the second welded segment on the lower platform 32 is clamped and fixed by two semi-circular steel hoops 1301 on it.

[0073] Step Fourteen: The fine-tuning device 44 falls back, and the welding steel barrel 4301 returns to its position;

[0074] Step 15: The traveling gantry crane 54 lifts the corresponding welding segment of the steel structure and installs it into the welding steel barrel 4301. The transfer platform 5 moves the welding steel barrel 4301 to the welding position. The fine-tuning device 44 and the synchronous lifting system 2 are adjusted to ensure the precise connection of the steel structure welding segments. The appearance inspection probe 4105 inspects the connection position of the steel structure welding segments. Specifically, when the subsequent welding segments of the steel structure are transported to the welding position, the already welded segments above are adjusted in position by the synchronous lifting system 2, i.e., the lower platform 32 The movable adaptive automatic fastening device 1 on the upper platform is released, and the synchronous lifting system 2 lifts or falls back to lift the welded steel structure segment to the welding position. The steel structure welding segment in the welding barrel 4301 is finely adjusted in height by the fine-adjustment device 44 to ensure accurate docking with the welded steel structure segment above. Then, the appearance inspection probe 4105 inspects the docking position to check the gap, longitudinal weld position, and bevel quality. After the inspection is completed, the movable adaptive automatic fastening device 1 on the lower platform 32 is clamped.

[0075] Step Sixteen: Repeat steps Nine through Eleven;

[0076] Step 17: The movable adaptive automatic fastening device 1 on the lower platform 32 is loosened, and the synchronous jacking system 2 is lifted to move the steel structure upward. Then the movable adaptive automatic fastening device 1 on the lower platform 32 is clamped. Specifically, the subsequent steel structure welding segments are lifted by the synchronous jacking system 2 after welding.

[0077] Step 18: The fine-tuning device 44 falls back, and the welding steel barrel 4301 returns to its position;

[0078] Step 19: Welding operation completed. If “Yes”, dismantle the fully automated welding and assembly platform for the tall variable cross-section steel structure; if “No”, return to Step 15.

[0079] Compared to the traditional method of assembling the steel structure on the ground first and then using two or more crawler cranes for multi-machine joint hoisting operations, this invention adopts a method of assembling and lifting simultaneously. The steel structure welding segments are transported via a transfer platform 5, and the automated welding platform 4 welds the steel structure segments. During this process, a movable adaptive automatic fastening device 1 secures the steel structure, and a fine-tuning device 44 and a synchronous lifting system 2 adjust the steel structure to ensure precise alignment. Simultaneously, the welding device 41 can inspect and detect flaws at the welding position before and after welding, effectively ensuring welding quality. This invention offers high safety during construction, wide applicability, high construction efficiency, low construction cost, and is easy to promote.

[0080] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0081] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0082] The present invention has been described above by way of example. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or direct application to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A construction method for a fully automated welding and assembly platform for a tall, variable cross-section steel structure, characterized in that, The platform includes a movable adaptive automatic fastening device (1), a synchronous lifting system (2), a steel platform system (3), an automated welding operation platform (4), and a transport platform (5). The steel platform system (3) includes an upper platform (31), a lower platform (32), and a support system (33). The support system (33) is placed on the ground, and the lower platform (32) is supported by the support system (33). The synchronous lifting system (2) is installed on the lower platform (32) and drives the upper platform (31) to rise and fall. The movable adaptive automatic fastening device (1) is installed on the upper platform (31) and the lower platform (32) respectively to automatically fasten the steel structure to be welded. The transport platform (5) is placed on the ground and located in the support system (33). The automated welding operation platform (4) is placed on the transport platform (5) and transported by the transport platform (5). The automated welding platform (4) includes a welding device (41), a welding track (42), a welding feed device (43), and a fine-tuning device (44). The welding feed device (43) includes a welding feed steel barrel (4301), a steel barrel bottom plate (4302), and a steel barrel rib plate (4303). The steel barrel bottom plate (4302) is welded to the bottom of the welding feed steel barrel (4301), and the steel barrel rib plate (4303) is circumferentially welded to the side wall of the angle between the welding feed steel barrel (4301) and the steel barrel bottom plate (4302). The welding track (42) runs along the top of the outer side of the welding feed steel barrel (4301). The welding device (41) includes a welding gun (4101), a guide pulley (4102), a motor (4103), a welding box (4104), an appearance inspection probe (4105), an X-ray detector (4106), and an anti-corrosion material spray gun (4107). The guide pulley (4102) and the motor (4103) are installed inside the welding box (4104). The welding box (4104) is supported on the welding track (42) by the guide pulley (4102), and the guide pulley (4102) is connected to the motor (4107). 03) The drive rotation causes the welding box (4104) to move along the welding track (42). The welding gun (4101) is connected to the welding box (4104) for welding steel structures. The appearance inspection probe (4105) is connected to the welding box (4104) for checking the joint gap, longitudinal weld position, and bevel quality. The X-ray detector (4106) is connected to the welding box (4104) for non-destructive testing of the weld welded by the welding gun (4101). The anti-corrosion material spray gun (4107) is connected to the welding box (4104). 104) is used to spray anti-corrosion material on the weld; the fine adjustment device (44) is located at the bottom of the welding barrel (4301), including a fine adjustment jack (4401) and a top support plate (4402). The base of the fine adjustment jack (4401) is welded to the bottom of the welding barrel (4301), and the top support plate (4402) is welded to the top of the top rod of the fine adjustment jack (4401). The top support plate (4402) moves up and down along the inner wall of the welding barrel (4301), thereby driving the steel structure welding section inside the welding barrel (4301) to rise and fall. The transfer platform (5) includes a guide and limit device (51), a metal conveyor belt (52), a transfer platform base (53), and a traveling gantry crane (54). The guide and limit device (51) includes a pair of limit rails (5101), which are welded to the top of the long sides of the transfer platform base (53). The metal conveyor belt (52) is installed on the top of the transfer platform base (53) and is located between the pair of limit rails (5101). The inner side of the limit rails (5101) is provided with a connection to the bottom plate of the steel barrel (430). 2) The corresponding inner groove (5102), the bottom plate of the steel barrel (4302) is placed on the metal conveyor belt (52) and the two sides of the bottom plate of the steel barrel (4302) move along the inner groove (5102). The outer groove (5103) is provided on the outside of the limiting guide rail (5101). The longitudinal beam of the traveling gantry crane (54) stands on the top of the transfer platform base (53) and moves along the outer groove (5103) of the limiting guide rail (5101). The steel structure to be welded is hoisted into the welding steel barrel (4301) by the traveling gantry crane (54). The construction method includes the following steps: Step 1: Site leveling and hardening; Step 2: Install the fully automated welding and assembly platform for the tall, variable cross-section steel structure; Step 3: The traveling gantry crane (54) lifts the first welded section of the steel structure and installs it into the welding barrel (4301); Step 4: The transfer platform (5) will transfer the welding steel drum (4301) to the welding position; Step 5: The fine-tuning device (44) lifts the first welded section of the steel structure to the position of the lower platform (32); Step 6: The movable adaptive automatic fastening device (1) on the lower platform (32) clamps the first welded segment of the steel structure; Step 7: The fine-tuning device (44) falls back, and the welding steel barrel (4301) returns to its position; Step 8: The traveling gantry crane (54) lifts the second welding section of the steel structure and hoists it into the welding barrel (4301). The transfer platform (5) moves the welding barrel (4301) to the welding position. The fine adjustment device (44) is used to fine adjust and ensure the accurate docking of the steel structure welding section. The appearance inspection probe (4105) inspects the docking position of the steel structure welding section. Step Nine: Welding operation using welding torch (4101); Step 10: The X-ray inspection instrument (4106) performs non-destructive testing on the weld. If the non-destructive testing fails, return to step 9; if the non-destructive testing passes, proceed to step 11. Step 11: Apply anti-corrosion material to the weld area using an anti-corrosion material spray gun (4107); Step 12: Loosen the movable adaptive automatic fastening device (1) on the lower platform (32) and lift the fine adjustment device (44) to lift the first welded section of the steel structure to the position of the upper platform (31); Step 13: The movable adaptive automatic fastening devices (1) on the upper platform (31) and the lower platform (32) respectively clamp the corresponding welded segments of the steel structure; Step Fourteen: The fine-tuning device (44) falls back, and the welding steel barrel (4301) returns to its position; Step 15: The traveling gantry crane (54) lifts the corresponding welding segment of the steel structure and hoists it into the welding barrel (4301). The transfer platform (5) moves the welding barrel (4301) to the welding position. The fine adjustment device (44) and the synchronous lifting system (2) are adjusted to ensure the accurate docking of the welding segments of the steel structure. The appearance inspection probe (4105) inspects the docking position of the welding segments of the steel structure. Step Sixteen: Repeat steps Nine through Eleven; Step 17: Loosen the movable adaptive automatic fastening device (1) on the lower platform (32) and lift the synchronous lifting system (2) to move the steel structure up, and then clamp the movable adaptive automatic fastening device (1) on the lower platform (32); Step 18: The fine-tuning device (44) falls back, and the welding steel barrel (4301) returns to its position; Step 19: Welding operation completed. If "Yes", dismantle the fully automated welding and assembly platform for the tall variable cross-section steel structure; if "No", return to Step 15.

2. The construction method of a fully automated welding and assembly platform for a tall, variable cross-section steel structure according to claim 1, characterized in that, The upper platform (31) and the lower platform (32) have the same structure, both including a rectangular ring-shaped horizontal steel plate (3101). A protective railing (3102) is provided at the top edge of the horizontal steel plate (3101), and a Bailey beam (3103) is provided at the bottom of the horizontal steel plate (3101). The Bailey beam (3103) is composed of double-layer standard Bailey panels (3104) and a connecting frame (3105) welded between the double-layer standard Bailey panels (3104). The top of the double-layer standard Bailey panels (3104) is welded to the bottom of the horizontal steel plate (3101).

3. The construction method of a fully automated welding and assembly platform for a tall, variable cross-section steel structure according to claim 2, characterized in that, The support system (33) consists of four support columns (3301), and the tops of the four support columns (3301) are fixed to the corners of the Bailey beams (3103) at the bottom of the lower platform (32). The support columns (3301) include steel truss columns (3302), steel top plates (3303) and concrete pads (3304). The steel truss columns (3302) include four vertical support steel pipes (3305) arranged in a rectangular pattern. Diagonal bars (3306) and horizontal bars (3307) are welded alternately between adjacent vertical support steel pipes (3305) from top to bottom. Support bases (3308) are welded to the bottom of the vertical support steel pipes (3305). The support base (3308) includes a support steel pipe (3309), a steel base plate (3310) is welded to the bottom of the support steel pipe, and several steel ribs (3311) are welded to the circumference of the side wall of the angle between the support steel pipe (3309) and the steel base plate (3310). The support steel pipe (3309) is welded to the bottom of the vertical support steel pipe (3305). The steel base plate (3310) is bolted to the concrete pad (3304). The concrete pad (3304) is anchored to the ground. The bottom of the steel top plate (3303) is welded to the top of the four vertical support steel pipes (3305). The top is welded to the bottom of the Bailey beam (3103) at the bottom of the lower platform (32).

4. The construction method of a fully automatic welding and assembly platform for a tall, variable cross-section steel structure according to claim 3, characterized in that, The movable adaptive automatic fastening device (1) is vertically distributed along the centerline of the steel structure and includes a guide rail system (11), a truss system (12), a clamping device (13), and an automatic bolt fastening device (14). The guide rail system (11) includes guide rail steel beams (1101) and fasteners (1102). Two guide rail steel beams (1101) are positioned opposite each other on the top sides of the horizontal steel plate (3101) and fixed by fasteners (1102). The truss system (12) includes steel truss beams (1201), a steel plate base (1202), and moving wheels ( 1203); the moving wheels (1203) are located at both ends of the bottom of the steel truss beam (1201) and roll along the guide rail steel beam (1101); the steel plate base (1202) is fixed to the middle of the steel truss beam (1201); the clamping device (13) includes two semi-circular steel hoops (1301) and connecting angle plates (1302); the middle of the outer wall of the semi-circular steel hoop (1301) is welded to the top of the steel plate base (1202) through the connecting angle plates (1302); the two ends of the semi-circular steel hoop (1301) are provided with end plates (1303); the bolt automatic tightening device ( 14) Includes fixing bolts (1401) and an automatic tightening device (1402). A pair of fixing bolts (1401) are vertically welded to the end plate (1303) of a semi-circular steel hoop (1301). The automatic tightening device (1402) includes a motor (1403), a fixing sleeve (1404), and a nut sleeve (1405). The fixing sleeve (1404) is fixed to the end plate (1303) of the other semi-circular steel hoop (1301). The nut sleeve (1405) is rotatably connected to one end of the fixing sleeve (1404) for fixing. One end of the bolt (1401) passes through the end plate (1303) and is threaded into the nut sleeve (1405). The motor (1403) is located at the other end of the fixed sleeve (1404) and drives the nut sleeve (1405) to rotate, guiding the fixing bolt (1401) to penetrate into the nut sleeve (1405), thereby tightening the two semi-circular steel hoops (1301). The steel structure is fixed by the two semi-circular steel hoops (1301). The number of fixing bolts (1401) and automatic tightening devices (1402) is determined according to the weight and size of the steel structure.

5. The construction method of a fully automatic welding and assembly platform for a tall, variable cross-section steel structure according to claim 4, characterized in that, The synchronous lifting system (2) includes a jack (21), an upper shim (22), a lower shim (23), a pressure gauge (24), and a control system. The bottom of the upper shim (22) is welded to the top of the jack (21) rod, and the top is welded to the bottom of the Bailey beam (3103) at the bottom of the upper platform (31). The top of the lower shim (23) is welded to the bottom of the jack (21) base, and the bottom is welded to the top of the horizontal steel plate (3101) of the lower platform (32). The pressure gauge (24) is connected to the jack (21) to measure the pressure value inside the cylinder of the jack (21). The control system includes a control terminal (25) and a connecting line (26). The control terminal (25) is connected to the pressure gauge (24) through the connecting line (26) to read the pressure gauge (24) values ​​of each jack (21) and synchronously adjust the oil inlet and outlet of the jack (21) to achieve the synchronous lifting function.

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