Steel latticed column high-altitude assembly welding construction platform

Abstract

The utility model provides a steel latticed column high-altitude assembly welding construction platform, which comprises a main body bearing platform, a plurality of steel latticed columns and a plurality of steel latticed columns, the fixed connecting rod is arranged in the U-shaped groove of the main body bearing platform, and the fixed connecting rod is detachably connected with the main body bearing platform; the expansion supporting platform is arranged in the U-shaped groove of the main body bearing platform and arranged on one side of the fixed connecting rod, and the expansion supporting platform is detachably connected with the main body bearing platform. The steel latticed column high-altitude assembling and welding construction platform is enclosed to form a closed construction platform, can be disassembled, assembled and reused, can be disassembled into a unit module assembly of a main body platform and an expansion platform after one steel column is welded, is convenient to disassemble and can be reused in welding construction operation of other steel columns, and the construction platform is simple in structure and convenient to use. The bearing function of the shoulder beam can be reasonably utilized, cost is saved, the construction period is shortened, and working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and more specifically, to a high-altitude assembly and welding construction platform for steel lattice columns. Background Technology

[0002] When performing high-altitude assembly and welding of H-shaped steel lattice columns, scaffolding, suspended platforms, or aerial work platforms are typically used. However, these methods are problematic because the narrow working area at height increases the risk of falls and the platforms are susceptible to swaying due to wind load variations, leading to inefficient welding and inconsistent weld quality. Furthermore, scaffolding requires numerous steel pipes and fasteners, resulting in time-consuming and material-intensive setups, and necessitates a relatively flat and firm surface beneath the columns, leading to high manufacturing and site costs. Aerial work platforms also have stringent site requirements and are expensive. Besides these methods, a temporary construction platform can be welded on-site at the end of the lower lattice column before hoisting it to provide a working surface for high-altitude assembly and welding. This provides a safer and more stable working space, but the platform must be removed after the steel column assembly and welding are completed. This process is complex, non-reusable, labor-intensive, inefficient, and impacts the overall construction progress. Summary of the Invention

[0003] In view of this, this utility model proposes a high-altitude assembly and welding construction platform for steel lattice columns, aiming to solve the existing problems.

[0004] This utility model proposes a high-altitude assembly and welding construction platform for steel lattice columns. The platform includes: a main support platform with a U-shaped structure, used to be engaged with the outer periphery of the steel lattice column from its opening; a fixed connecting rod disposed within the U-shaped groove of the main support platform, and detachably connected to the main support platform, used to mate with mounting holes on the main support platform that are adapted to the cross-section of the steel lattice column, so that the main support platform and the fixed connecting rod are engaged with the outer periphery of the steel lattice column; and an extension support platform disposed within the U-shaped groove of the main support platform and positioned to one side of the fixed connecting rod, the extension support platform being detachably connected to the main support platform, used to form a closed annular construction platform surrounding the outer periphery of the steel lattice column.

[0005] Furthermore, the aforementioned high-altitude assembly and welding construction platform for steel lattice columns includes an extended support platform comprising two hinged extended platform bodies for relative flipping and opening to form a manhole on the annular construction platform.

[0006] Furthermore, the aforementioned high-altitude assembly and welding construction platform for steel lattice columns includes, as follows: a supporting steel plate and two connecting rods disposed on opposite sides of the supporting steel plate, wherein the connecting rods are used to detachably connect to the main bearing platform.

[0007] Furthermore, in the above-mentioned high-altitude assembly and welding construction platform for steel lattice columns, the supporting steel plate is a patterned steel plate.

[0008] Furthermore, the above-mentioned high-altitude assembly and welding construction platform for steel lattice columns includes, as follows: a U-shaped support frame; and a U-shaped load-bearing steel plate, which is mounted on the U-shaped support frame.

[0009] Furthermore, the U-shaped support frame of the aforementioned steel lattice column high-altitude assembly welding construction platform is equipped with stiffening plates.

[0010] Furthermore, in the above-mentioned high-altitude assembly and welding construction platform for steel lattice columns, the U-shaped load-bearing steel plate is a patterned steel plate.

[0011] Furthermore, in the above-mentioned steel lattice column high-altitude assembly welding construction platform, the outer edge of the annular closed construction platform is provided with a guardrail along the circumference of the annular closed construction platform, and the guardrails on the main bearing platform and the extended support platform are detachably connected.

[0012] Furthermore, in the aforementioned high-altitude assembly and welding construction platform for steel lattice columns, the guardrail includes: a plurality of vertical railings arranged at intervals; a plurality of horizontal railings arranged between the vertical railings, wherein the horizontal railings are connected to the vertical railings, and the vertical railings and the horizontal railings form a grid structure; a kick plate arranged at the bottom of the grid structure; and a windbreak plate arranged on the grid structure and positioned above the kick plate.

[0013] Furthermore, in the aforementioned high-altitude assembly and welding construction platform for steel lattice columns, the side of the U-shaped groove of the main bearing platform is provided with a fixing groove along its length. A wedge-shaped pin is detachably inserted into the fixing groove to secure the connecting rod. The side of the U-shaped groove of the main bearing platform is provided with a rotatable rotating buckle, and the side of the extension support platform is provided with a disassembly hole adapted to the rotating buckle. The rotating buckle is rotated to a disassembly state parallel to the disassembly hole, and the rotating buckle can pass through the disassembly hole so that the disassembly hole is fitted onto the rotating buckle. The rotating buckle is rotated to a locking state perpendicular to the disassembly hole, and the extension support platform is fixed to the main bearing platform.

[0014] This utility model provides a high-altitude assembly and welding construction platform for steel lattice columns. A U-shaped main support platform is inserted into the outer perimeter of the steel lattice column from its opening. Fixed connecting rods, in conjunction with the main support platform, create mounting holes that match the cross-section of the steel lattice column, allowing the main support platform and fixed connecting rods to be secured to the outer perimeter of the steel lattice column. An extension support platform is detachably connected to the main support platform to form a closed, annular construction platform surrounding the steel lattice column. Compared to traditional platforms, this closed-loop welding platform offers a larger operating space and more convenient and safer construction. This high-altitude assembly and welding construction platform for steel lattice columns can be disassembled and reused. After welding one steel column, it can be disassembled into modular components consisting of the main platform and the extension platform. Disassembly is convenient, and it can be reused in welding operations of other steel columns, solving the problems of poor safety, low welding efficiency, and high manufacturing costs that affect construction progress associated with traditional steel column welding construction platforms. Meanwhile, the steel lattice column high-altitude assembly makes reasonable use of the shoulder beam's load-bearing function for the welding construction platform, avoiding the need for scaffolding erection and temporary construction platform welding and removal, saving costs, shortening the construction period, and improving work efficiency. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0016] Figure 1 A front view of the high-altitude assembly and welding construction platform for steel lattice columns provided in this embodiment of the utility model;

[0017] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0018] Figure 3 A top view of the high-altitude assembly and welding construction platform for steel lattice columns provided in this embodiment of the utility model;

[0019] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0020] Figure 5 for Figure 4 A magnified view of a section at point C;

[0021] Figure 6 for Figure 5 Sectional view at point DD;

[0022] Figure 7 for Figure 5 Sectional view at EE;

[0023] Figure 8 A schematic diagram of the structure of the extended support platform provided in this embodiment of the utility model. Detailed Implementation

[0024] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] See Figures 1 to 8 This diagram illustrates a preferred structure of the high-altitude assembly and welding construction platform for steel lattice columns provided in an embodiment of the present invention. As shown in the figure, the construction platform includes: a main load-bearing platform 1, a fixed connecting rod 2, and an extension support platform 3; wherein,

[0026] The main support platform 1 has a U-shaped structure and is used to clamp onto the outer periphery of the steel lattice column 4 from the opening. Specifically, the main support platform 1 is a U-shaped platform structure to secure it to the outer periphery of the steel lattice column 4, providing a support platform for high-altitude assembly and welding operations on the steel lattice column 4. That is, the main support platform 1 may include two spaced-apart side support platforms 11 and a transverse support platform 12 disposed between the two side support platforms 11, forming a U-shaped platform structure. In this embodiment, the two side support platforms 11 of the main support platform 1 can respectively support the two sides of the steel lattice column 4 (e.g., Figure 3 The left and right sides (as shown) are set on the steel column shoulder beam 5, making reasonable use of the shoulder beam's load-bearing function, avoiding the need for scaffolding erection and temporary construction platform welding and removal, saving costs, shortening the construction period, and improving work efficiency. Among them, the steel lattice column 4 can be an H-shaped lattice column.

[0027] The fixed connecting rod 2 is set in the U-shaped groove of the main bearing platform 1, and the fixed connecting rod 2 is detachably connected to the main bearing platform 1 to cooperate with the mounting holes of the main bearing platform 1 that are adapted to the cross-section of the steel lattice column 4, so that the main bearing platform 1 and the fixed connecting rod 2 are locked on the outer periphery of the steel lattice column 4.

[0028] Specifically, the fixed connecting rod 2 is a rod-shaped structure, extending along the width of the groove of the main bearing platform 1 (e.g., Figure 3The fixed connecting rod 2 (in the horizontal direction shown) is set in the U-shaped groove of the main bearing platform 1. That is, the fixed connecting rod 2 is arranged parallel to the transverse support platform 12. The two ends of the fixed connecting rod 3 are detachably installed on the two side support platforms 11 of the main bearing platform 1, so that the fixed connecting rod 3 and the main bearing platform 1 form an installation hole in the U-shaped groove near the transverse support platform 12 that matches the cross-section of the steel lattice column 4, so that the main bearing platform 1 and the fixed connecting rod 2 are locked onto the steel lattice column 4. By the main bearing platform 1, the fixed connecting rod 2 and the steel lattice column 4 being pressed together, the steel lattice column high-altitude assembly welding construction platform is stabilized as a whole. Among them, the fixed connecting rod 2 can be a channel steel of type [5], that is, a No. 5 channel steel, which is a channel steel with a height of 50mm, a leg width of 37mm and a web thickness of 4.5mm.

[0029] The extended support platform 3 is installed within the U-shaped groove of the main bearing platform 1 and positioned on one side of the fixed connecting rod 2 (e.g., Figure 3 (As shown below), the extended support platform 3 is detachably connected to the main bearing platform 1 to form a ring-shaped closed construction platform surrounding the steel lattice column 4. Specifically, an extension support platform 3 is provided below the fixed connecting rod 2 within the U-shaped groove of the main bearing platform 1. The extension support platform 3 is detachably connected to the main bearing platform 1. The extension support platform 3 and the main bearing platform 1 are two modular components that can be disassembled and reused. Furthermore, by disassembling and assembling, the extension support platform 3 and the main bearing platform 1 can be easily installed on the outer periphery of the steel lattice column 4. First, the main bearing platform 1 is hoisted and moved from one side of the steel lattice column 4 until the three sides of the steel lattice column 4 respectively press against the three inner walls of the main bearing platform 1, that is, against the opposing inner walls of the two side support platforms 11 and the inner wall of the groove of the transverse support platform 12. Then, the fixed connecting rod 2 is installed so that it presses against the other side of the steel lattice column 4 to secure it around the periphery of the steel lattice column 4. Finally, the extension support platform 3 is hoisted and inserted into the groove opening of the main bearing platform 1. The insertion direction can be found in [reference needed]. Figure 3 As shown by the arrow, it is installed on the two side support platforms 11 in a detachable manner to form a ring-shaped closed construction platform around the steel lattice column 4, i.e. a closed construction platform. Compared with the traditional platform, the closed enclosure welding platform has a larger operating space and is more convenient and safer to construct.

[0030] A protective railing 6 is installed around the entire circumference of the circular enclosed construction platform. Specifically, both the main support platform 1 and the extended support platform 3 have protective railings 6 on their outer edges. This not only significantly reduces the impact of high-altitude wind loads on welding operations but also obstructs the view of construction personnel during work, reducing external interference, greatly improving welding quality, and ensuring construction safety. Preferably, the protective railings 6 on the main support platform 1 and the extended support platform 3 are detachably connected, so that the main support platform 1 and its protective railings 6, and the extended support platform 3 and its protective railings 6, are each two detachable assembly units, facilitating assembly and disassembly and improving assembly and construction efficiency. In this embodiment, the protective railings 6 on the main support platform 1 and the extended support platform 3 can be disassembled and assembled using bolts; this embodiment does not impose any limitations on this method.

[0031] See also Figure 2 , Figure 4 The main support platform 1 has a rotatable rotating buckle 7 on the side of the U-shaped groove, such as... Figure 8 As shown, the side of the extension support platform 3 is provided with a disassembly hole 31 that matches the rotating buckle 7. The rotating buckle 7 is rotated to a disassembly state parallel to the disassembly hole 31. In this embodiment, the disassembly hole 31 is along the width direction of the extension support platform 3 (e.g., ...). Figure 8 (As shown in the vertical direction) When the rotating buckle 7 is rotated to the vertical position, it is in the disassembled state, and the rotating buckle 7 can pass through the disassembly hole 31 so that the disassembly hole 31 is fitted onto the rotating buckle 7. Figure 2 and Figure 4 As shown, when the rotating buckle 7 is rotated to a locking state perpendicular to the disassembly hole 31, that is, when the rotating buckle 7 is rotated to a horizontal position, the extension support platform 3 is fixed to the main bearing platform 1.

[0032] Specifically, the main supporting platform 1 has a snap-fit ​​support 8 on the side of the U-shaped groove. The snap-fit ​​support 8 can be a slot structure, and the rotating snap fastener 7 is rotatably installed in the groove of the snap-fit ​​support 8. There can be two snap-fit ​​supports 8, each installed on the side of the U-shaped groove, and each snap-fit ​​support 8 can have two rotating snap fasteners 7 along the groove depth direction. The side of the extended support platform 3 (e.g.) Figure 8 The left and right vertical sides (as shown) are provided with mounting and dismounting holes 31 that are adapted to the rotating buckles 7. Each side can have two holes 31 spaced apart, that is, the extension support platform 3 can be mounted and dismounted through four rotating buckles 7, thereby improving the stability of the extension support platform 3. The buckle support component 8 is a No. 8 channel steel, that is, a channel steel with a height of 80mm, a leg width of 43mm, and a web thickness of 5.0mm. In other words, the double platform is connected by mutual insertion, which is convenient for installation and disassembly and saves time.

[0033] See also Figure 3, Figures 5 to 7 The main support platform 1 has a U-shaped groove with a locking groove 13 on its side. A wedge-shaped pin 9 is detachably inserted into the locking groove 13 to secure the connecting rod 2. Specifically, the main support platform 1 has several locking grooves 13 along its length on the side of the U-shaped groove. There can be multiple pairs of locking grooves 13, each pair extending along the groove depth direction of the main support platform 1 (e.g., ...). Figure 5 The wedge-shaped pins 9 are arranged at intervals in the vertical direction shown. There can be two wedge-shaped pins 9. The corresponding insertion grooves 13 can be selected based on the cross-sectional dimensions of the steel lattice column 4 to press and fix the fixed connecting rod 2, so that the fixed connecting rod 2 is pressed tightly against the wall surface of the steel lattice column 4. That is to say, the fixed connecting rod 2 is connected to the main bearing platform 1 and pressed tightly against the steel lattice column 4 on the notch side of the main bearing platform 1 using pins, so that the platform is stable as a whole.

[0034] See also Figure 3 The main supporting platform 1 includes a U-shaped support frame 14 and a U-shaped supporting steel plate 15; wherein, the U-shaped supporting steel plate 15 is disposed on the U-shaped support frame 14. Specifically, the U-shaped support frame 14 serves as a load-bearing skeleton, and the U-shaped supporting steel plate 15 serves as a support plate to provide the U-shaped support platform for construction operations. In this embodiment, the U-shaped supporting steel plate 15 can be made by interlacing ∠50×5 equilateral angle steel; wherein, the ∠50×5 equilateral angle steel is an equilateral angle steel with a side width of 50mm and a side thickness of 5mm. To improve the stability of the U-shaped support frame 14, preferably, the U-shaped support frame 14 is provided with a stiffening plate 16 inside, which can be a PL5×50 steel plate, that is, a flat steel with a thickness of 5mm and a width of 50mm. The U-shaped supporting steel plate 15 can be a 3mm thick checkered steel plate, which is laid and welded onto the U-shaped support frame 14.

[0035] See also Figure 8 The extended support platform 3 includes two hinged extended platform bodies 32, which are used to flip open relative to each other to form a manhole on the ring-shaped construction platform. Specifically, the two extended platform bodies 32 are hinged together by hinges 33, and each of the two sides of the extended platform bodies 32, i.e., the sides perpendicular to the hinge connection, is provided with mounting and dismounting holes 31, which are used to detach and install them onto the U-shaped support frame 14 of the main bearing platform 1 by rotating buckles 7. The hinge connection between the two extended platform bodies 32 and the cooperation of rotating buckles 7 realize the effect of an upward flipping movable plate, which serves as a manhole and a construction platform, improving the safety and convenience of construction personnel going up and down the platform.

[0036] See also Figure 8 The expansion platform body 32 includes: a supporting steel plate 321 and components disposed on opposite sides of the supporting steel plate 321 (e.g., ...). Figure 8Two connecting rods 322 on the left and right vertical sides (as shown) are used to detachably connect to the main support platform 1. Specifically, the supporting steel plate 321 can be a 3mm thick patterned steel plate. The two 3mm thick patterned steel plates are connected by a hinge. Two ∠70×45×4 angle steels (70mm long side width, 45mm short side width, and 4mm side thickness) are welded to the two sides of the two 3mm thick patterned steel plates, that is, the sides perpendicular to the hinge connection edge. These angle steels serve as connecting rods 322, which are supported in the No. 8 channel steel pre-welded to the inside of the main support platform 1, that is, the snap-fit ​​support member 8. The connecting rods 322 and the snap-fit ​​support member 8 are fixed by rotating the snap-fit ​​7 to initially connect the main support platform 1 and the extended support platform 3.

[0037] See also Figure 1 The guardrail 6 includes: several vertical railings 61, several horizontal railings 62, a kick plate 63, and a windbreak plate 64; wherein, the several vertical railings 61 are arranged at intervals; the several horizontal railings 62 are arranged between the vertical railings 61, and the horizontal railings 62 are connected to the vertical railings 61, forming a grid structure; the kick plate 63 is arranged at the bottom of the grid structure; and the windbreak plate 64 is arranged on the grid structure and placed above the kick plate 63.

[0038] Specifically, the vertical railing 61 can be made of ∠80×6 equilateral angle steel, i.e., equilateral angle steel with a side width of 80mm and a side thickness of 6mm. The horizontal railing 62 is horizontally arranged and is made of No. 8 channel steel. The kick plate 63 is made of PL1.5×200mm ordinary steel plate, i.e., flat steel with a thickness of 5mm and a width of 50mm. The wind deflector 64 can be a plate structure with a thickness of 0.6mm. The vertical railing 61, horizontal railing 62, kick plate 63, and wind deflector 64 together form a protective system, which is welded to the load-bearing platform. The vertical railing 61 on the main load-bearing platform 1 and the vertical railing 61 on the extension support platform 3 can be fastened with M24×50 bolts to strengthen the connection and fixation of the two platforms, finally forming a detachable closed enclosure platform centered on the lattice column.

[0039] The installation steps for the welding construction platform of the high-altitude assembly of the steel lattice column are as follows: ① After the steel lattice column 4 is installed, weld the main bearing platform 1, fixed connecting rod 2, and extended support platform 3 according to the dimensions of the steel lattice column 4, and pre-weld the guardrail 6 onto the main bearing platform 1 and extended support platform 3; ② Lift the main bearing platform 1 from one side of the steel lattice column 4 and insert it along the column body of the steel lattice column 4, so that the main bearing platform 1 is close to the three sides of the steel lattice column 4 and placed on the steel column shoulder beam 5; ③ After the fixed connecting rod 2 is overlapped with the inner angle steel of the main bearing platform 1, i.e., the U-shaped support frame 14, it is extended towards the steel lattice column 4 (e.g., ...). Figure 3Move the connecting rod 2 (in the direction of the arrow shown) to make it close to the steel lattice column 4. Then insert the wedge-shaped pin 9 into the insertion groove 13 reserved on the inner angle steel of the U-shaped platform, so that it is connected to the U-shaped support frame 14 and forms a tight enclosure around the U-shaped support frame 14; ④ Lift the extension support platform 3 and insert it from the notch side of the main bearing platform 1. Align the disassembly hole 31 reserved on the connecting rod 322 of the extension support platform 3 with the rotating buckle 7 in the buckle support 8 and rotate the buckle 7 to the locked state, so that the extension support platform 3 is connected to the main bearing platform 1. ⑤ Initial connection is formed between the main support platform 1 and the extension support platform 3; ⑥ M24×50 bolts are inserted and tightened through the bolt holes reserved in the adjacent railings of the main support platform 1 and the extension support platform 3 to ensure a complete and stable connection between the main support platform 1 and the extension support platform 3; ⑦ Rotate the rotating buckle 7 corresponding to the extension platform body 32 located near the fixed connecting rod 2 to the disassembled state, and flip the extension platform body 32 upward to form a passage hole for safe operation on the upper and lower platforms; ⑧ After construction is completed, the module is disassembled and directly hoisted to the next steel column for reuse.

[0040] In summary, the high-altitude assembly and welding construction platform for steel lattice columns provided in this embodiment is configured such that the main support platform 1, which has a U-shaped structure, is clamped to the outer periphery of the steel lattice column 4 from the opening; the fixed connecting rod 2, in conjunction with the main support platform 1, forms mounting holes that are adapted to the cross-section of the steel lattice column 4, so that the main support platform 1 and the fixed connecting rod 2 are clamped to the outer periphery of the steel lattice column 4; the extension support platform 3 is detachably connected to the main support platform 1 to form a closed annular construction platform surrounding the outer periphery of the steel lattice column 4, i.e., a closed construction platform. Compared with traditional platforms, the closed enclosed welding platform has a larger operating space and is more convenient and safer for construction. This high-altitude assembly and welding construction platform for steel lattice columns can be disassembled and reused. After the welding of one steel column is completed, it can be disassembled into unit module components of the main platform and the extension platform. Disassembly is convenient and it can be reused in the welding construction of other steel columns, solving the problems of poor safety, low welding efficiency, and high manufacturing cost that affect the construction progress of traditional steel column welding construction platforms. Meanwhile, the steel lattice column high-altitude assembly makes reasonable use of the shoulder beam's load-bearing function for the welding construction platform, avoiding the need for scaffolding erection and temporary construction platform welding and cutting, saving costs, shortening the construction period, and improving work efficiency.

[0041] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0042] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A high-altitude assembly and welding construction platform for steel lattice columns, characterized in that, include: The main support platform has a U-shaped structure and is used to be clamped to the outer periphery of the steel lattice column from the opening. A fixed connecting rod is provided in the U-shaped groove of the main bearing platform, and the fixed connecting rod is detachably connected to the main bearing platform to cooperate with the main bearing platform to form an installation hole that matches the cross-section of the steel lattice column, so that the main bearing platform and the fixed connecting rod are locked on the outer periphery of the steel lattice column; An extended support platform is set in the U-shaped groove of the main bearing platform and placed on one side of the fixed connecting rod. The extended support platform is detachably connected to the main bearing platform and is used to form a ring-shaped closed construction platform surrounding the outer periphery of the steel lattice column.

2. The high-altitude assembly and welding construction platform for steel lattice columns according to claim 1, characterized in that, The extended support platform includes two hinged extended platform bodies for relative flipping and opening to form a manhole on the annular construction platform.

3. The high-altitude assembly and welding construction platform for steel lattice columns according to claim 2, characterized in that, The expansion platform body includes: a supporting steel plate and two connecting rods disposed on opposite sides of the supporting steel plate, the connecting rods being used to detachably connect to the main bearing platform.

4. The high-altitude assembly and welding construction platform for steel lattice columns according to claim 3, characterized in that, The supporting steel plate is a patterned steel plate.

5. The high-altitude assembly and welding construction platform for steel lattice columns according to any one of claims 1 to 4, characterized in that, The main carrier platform includes: U-shaped support frame; U-shaped load-bearing steel plates are installed on the U-shaped support frame.

6. The high-altitude assembly and welding construction platform for steel lattice columns according to claim 5, characterized in that, The U-shaped support frame is equipped with stiffening plates inside.

7. The high-altitude assembly and welding construction platform for steel lattice columns according to claim 5, characterized in that, The U-shaped load-bearing steel plate is a patterned steel plate.

8. The high-altitude assembly and welding construction platform for steel lattice columns according to any one of claims 1 to 4, characterized in that, The outer edge of the circular enclosed construction platform is provided with a guardrail along the circumference of the platform, and the guardrails on the main support platform and the extended support platform are detachably connected.

9. The high-altitude assembly and welding construction platform for steel lattice columns according to claim 8, characterized in that, The protective fence includes: Several vertical railings are arranged at intervals; Several horizontal railings are arranged between the vertical railings, and the horizontal railings are connected to the vertical railings, forming a grid structure with the vertical railings and the horizontal railings; A kickboard is installed at the bottom of the grid structure; A wind deflector is provided on the grid structure and positioned above the kick plate.

10. The high-altitude assembly and welding construction platform for steel lattice columns according to any one of claims 1 to 4, characterized in that, The main support platform has a U-shaped groove side with a insertion groove along its length. A wedge-shaped pin is inserted into the insertion groove in a detachable manner to fix the connecting rod. The main support platform has a rotatable rotating buckle on the side of the U-shaped groove, and the side of the extension support platform has a disassembly hole adapted to the rotating buckle. The rotating buckle is rotated to a disassembly state parallel to the disassembly hole, and the rotating buckle can pass through the disassembly hole so that the disassembly hole is fitted onto the rotating buckle. The rotating buckle is rotated to a locking state perpendicular to the disassembly hole, and the extension support platform is fixed to the main support platform.

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