High-altitude steel structure welding windshield and welding method

Abstract

The invention discloses a high-altitude steel structure welding windproof cover and a welding method, and aims to solve the problems that according to a high-altitude welding windproof scheme, disassembly and assembly are tedious, and the welding quality is difficult to guarantee. The windproof cover comprises an arch-shaped support, a horizontal support, a transparent coiled material, a wind speed measuring instrument and the like. The arch-shaped support is composed of an upper support, a lower support and a vertical support and is adsorbed to the surface of a steel structure through an adsorption piece. The horizontal support comprises a straight horizontal support and a bent horizontal support, and the included angle of the bent horizontal support can be adjusted through a middle hinge structure. The transparent coiled material can be connected with the arch-shaped support in a hanging mode through the hook, and windproof spaces with different sealing degrees are formed. The wind speed measuring instrument is used for monitoring wind speed in real time. The welding method comprises the following steps: arranging a plurality of arch-shaped brackets along the circumferential direction of the steel structure, erecting adaptive horizontal supports, vertically laying the middle coiled material, and selectively hanging the upper coiled material and the lower coiled material by combining data of a wind speed measuring instrument. The construction process is simplified, the efficiency is improved, the cost is reduced, and the green construction concept is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building construction, in particular to a high-altitude steel structure welding wind shield and welding method. BACKGROUND

[0002] With the acceleration of urbanization process, the construction scale of high-rise buildings and large-span steel structure projects, such as super high-rise office buildings, large venues, bridge towers, etc., continues to expand, and high-altitude steel structure welding operation has become a key link in engineering construction. The welding quality directly determines the load-bearing capacity and durability of the steel structure, and wind speed is the core environmental factor affecting the welding quality. According to the "Steel Structure Welding Specification" and industry practice, common welding processes such as manual arc welding and gas shielded welding require the wind speed of the operating environment to be controlled within a certain threshold, such as gas shielded welding usually requires wind speed ≤ 2 m / s. If the wind speed exceeds the standard, it is easy to cause unstable arc, abnormal cooling speed of molten pool, and then cause defects such as weld porosity, slag inclusion, and cracks.

[0003] In order to meet the windproof requirements, the traditional construction often adopts the scheme of building a windproof shed. However, this scheme has many problems in practical application:

[0004] (1) Lack of standardized components, traditional windproof sheds need to be designed and processed according to specific construction scenes, such as steel column position, welding height, structure shape, etc. on site, involving steel frame cutting, welding, canvas cutting and fixing, etc. The construction process is complicated.

[0005] (2) Poor adaptability, in the area without horizontal support at high altitude, such as the top of independent steel column, cantilever steel structure section, etc., the traditional steel frame cannot be stably built due to the lack of fixed fulcrum, resulting in the problem of windproof for welding operation in these special parts.

[0006] (3) Lack of flexibility, different welding processes have different requirements for wind speed, such as submerged arc welding is less sensitive to wind speed than gas shielded welding, while the windproof level of the traditional windproof shed is fixed once it is built, and cannot be adjusted according to the actual welding process requirements.

[0007] In summary, the traditional high-altitude steel structure welding windproof scheme has been difficult to adapt to the comprehensive requirements of modern engineering for efficiency, quality, cost and environmental protection, and a standardized, flexible, convenient and adjustable windproof device that can meet different wind speed requirements is needed. SUMMARY

[0008] In view of the above defects of the prior art, the present application uses a bow-shaped support, a horizontal support, a PET coiled material and a wind speed measuring instrument to build a windproof device that meets different wind speed requirements.

[0009] The first purpose of the present application is to provide a high-altitude steel structure welding wind shield, which comprises a bow-shaped support, a horizontal support and a transparent coiled material;

[0010] The arc-shaped support is composed of sequentially fixed connections of the upper support (1), the vertical support (3) and the lower support (2), the upper support (1) and the lower support (2) are symmetrical structures and are provided with the suction accessories (4), the folding point position of the arc-shaped support is provided with the hook (7) for laying the transparent roll material, and the vertical support (3) is provided with the connecting plate (8) for installing the horizontal support at both ends;

[0011] The horizontal support includes the straight horizontal support (5) and / or the folded horizontal support (6), the folded horizontal support (6) is provided with the hinge structure in the middle, and the horizontal support is provided with the connecting piece matched with the connecting plate (8) at both ends;

[0012] The transparent roll material is provided with the upper roll material, the middle roll material and the lower roll material from top to bottom, the middle roll material is a rectangle, and the upper roll material and the lower roll material are adapted to the cross-sectional shape of the steel structure.

[0013] Preferably, the suction accessories (4) are permanent magnets or electromagnets; the suction function of the electromagnet is activated by connecting the 12V-24V direct current power supply, and the overall suction force is greater than 1000N.

[0014] Preferably, the upper support (1) is provided as a right-angled triangle structure, the suction accessories (4) are arranged on one right-angled side of the right-angled triangle structure, and the right-angled side is close to the surface of the steel structure during installation.

[0015] Preferably, when the steel structure is a cylinder, the upper roll material and the lower roll material are fan ring structures; when the steel structure is a rectangular column, the upper roll material and the lower roll material are outer circles and inner square shapes.

[0016] Preferably, the light transmittance of the transparent roll material is not less than 85%, and the thickness is 0.5-1.2mm; the middle roll material is provided with the operation hole into which the arm can be inserted.

[0017] Preferably, the wind speed measuring instrument close to the welding position in the wind shield and the reminding device for issuing a warning when the real-time wind speed exceeds the specified threshold value are further included.

[0018] The second object of the application provides a high-altitude steel structure welding method, including the following steps:

[0019] S1: selecting the arc-shaped support, making the arc-shaped support close to the specified position of the steel structure to be welded, making the edges of the upper support (1) and the lower support (2) with the suction accessories (4) adhere to the surface of the steel structure, and activating the suction accessories (4) to vertically fix the arc-shaped support;

[0020] S2: In S1, the arc-shaped support is fixed as a reference, and the arc-shaped supports are uniformly arranged along the outer periphery of the steel structure at the same height position. The number of the arc-shaped supports is determined according to the cross-sectional size of the steel structure and the welding operation range;

[0021] S3: According to the cross-sectional shape of the steel structure, straight horizontal supports (5) and / or folded horizontal supports (6) are selected, and the included angle of the folded horizontal support (6) is adjusted. The two end connectors of the horizontal support are connected with the connecting plate (8) of the arc-shaped support.

[0022] S4: The middle roll of the rectangle is taken, and the upper and lower edge hanging holes are matched with the hooks (7) at the folding points of the arc-shaped supports. The middle roll is vertically laid between the adjacent arc-shaped supports.

[0023] S5: The specified wind speed threshold of the current welding process is determined, and the real-time wind speed of the wind speed measuring instrument is read. If the real-time wind speed is higher than the threshold, the upper roll and / or the lower roll with an adaptive shape are selected, and the fixing is completed through the cooperation of the hanging hole and the hook (7).

[0024] S6: After confirming that the wind speed in the wind shield meets the specified threshold, the welder performs welding operation inside or outside the wind shield, and the wind speed is monitored in real time during the welding process.

[0025] S7: During the welding process, if the wind speed exceeds the standard and the reminding device issues a reminder, measures such as increasing the upper and lower rolls, increasing the overlap width of the transparent roll, and strengthening the overlap tightness are taken.

[0026] S8: After the welding operation is completed, the wind shield is disassembled in the reverse order of installation, and the parts are cleaned and inspected before being classified and stored for subsequent repeated use.

[0027] Preferably, in step S2, one arc-shaped support is arranged every 60° for a circular steel column, and two arc-shaped supports are arranged on each side of a rectangular steel column.

[0028] Preferably, in step S6, if the welder works outside the wind shield, the middle roll with an operation hole is selected, and the operation hole is aligned with the welding operation point. The worker's hands are inserted into the wind shield through the operation hole to hold the welding equipment for welding.

[0029] The present application has the following beneficial effects:

[0030] (1) The controllability of wind speed is improved: through the modular windproof structure, a closed windproof space is formed, and the wind speed is monitored in real time. According to the welding process requirements, such as gas shield welding ≤2m / s, manual arc welding ≤8m / s, etc., the windproof level can be flexibly adjusted. When the wind speed is low, only the middle PET roll is used to realize side windproof, and when the wind speed is high, the upper and lower PET rolls are added to form a fully enclosed protection, which effectively avoids the interference of external airflow and guarantees the welding strength of the steel structure.

[0031] (2) The work field of view is optimized: the windproof main body adopts high-transparency PET coiled material, without the need of additional lighting equipment to ensure clear vision during welding, and the workers can accurately control the welding position and the weld forming state when working through the operation hole, further reducing the quality problems caused by operation errors, and improving the accuracy of welding work.

[0032] (3) Wide range of structure adaptation: the arc-shaped support is directly adsorbed on the surface of the steel structure through the adsorption accessory, without the need of relying on horizontal support points, and can be stably installed on the top of an independent steel column, a cantilever steel structure section and other areas that cannot be reached by traditional windproof sheds. The horizontal support can adjust the included angle through the middle hinge structure, and can adapt to steel structures with different cross-sectional shapes such as circles and rectangles.

[0033] (4) The whole is designed in a modular manner, and the installation and disassembly time of the windproof cover of a single work surface is shortened compared with the traditional windproof shed. The weight and volume of each component are small, and the workers can directly carry and install them. All components can be reused, avoiding waste, and meeting the development requirements of modern engineering green construction and low-carbon environmental protection.

[0034] The high-altitude steel structure welding windproof cover and the matching welding method have advantages in welding quality guarantee, construction efficiency improvement, cost control and environmental protection adaptation. BRIEF DESCRIPTION OF DRAWINGS

[0035] Fig. 1 It is a schematic diagram of the welding windproof cover of the embodiment of the present application.

[0036] Fig. 2 It is a schematic diagram of the arc-shaped support of the embodiment of the present application.

[0037] Fig. 3 It is a schematic diagram of the upper support of the embodiment of the present application.

[0038] Explanation of reference signs: 1-upper support; 2-lower support; 3-vertical support; 4-adsorption accessory; 5-straight horizontal support; 6-folded horizontal support; 7-hook; 8-connection plate. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] Embodiment one

[0041] The high-altitude steel structure welding wind shield disclosed by the embodiment is modular in design, can be flexibly disassembled and combined, is suitable for different sizes and shapes of high-altitude steel structure welding scenes, has wind speed adaptability and a good work field of view, and the like. Figs. 1-3 As shown in the figure, the wind shield comprises the following components:

[0042] I. The arc-shaped support is a core support component of the wind shield and mainly comprises an upper support 1, a lower support 2 and a vertical support 3. The three are fixedly connected to form a stable frame to ensure the rigidity of the overall structure. The upper support 1 and the lower support 2 are in a symmetrical structure, and a suction accessory 4 is mounted on the surface of each of the upper support 1 and the lower support 2. The suction accessory 4 can be a permanent magnet or an electromagnet. For example, when an electromagnet is used, the suction force can reach 1000N. The arc-shaped support is stably fixed on the surface of the high-altitude steel structure through magnetic adsorption, without the need to additionally build a fixed support point, and is suitable for special areas without horizontal support such as the top of a free-standing steel column and a cantilever steel structure section.

[0043] The upper support 1 is designed in a right-angled triangle structure, one of the right-angled sides of which is provided with the suction accessory 4. The right-angled side is close to the surface of the high-altitude steel structure during installation, thereby improving the fit and stability of the arc-shaped support and the steel structure. Hooks 7 are arranged at multiple folding point positions of the arc-shaped support, such as the upper, middle and lower positions. The hooks 7 are used for hanging PET coiled material to provide fixing points for laying the subsequent windproof layer. In addition, the two ends of the vertical support 3 are each provided with a connecting plate 8. The connecting plate 8 is used for connecting with the horizontal support to realize the transverse splicing of multiple arc-shaped supports.

[0044] II. The horizontal support is a transverse component for connecting adjacent arc-shaped supports and is divided into straight horizontal supports 5 and folded horizontal supports 6, which can be flexibly selected according to the shape and welding operation range of the steel structure. The middle part of the folded horizontal support 6 is provided with a hinged structure formed by two horizontal rods connected through a hinge. By adjusting the included angle of the hinge, the folded horizontal support 6 can be adapted to steel structures of different diameters or side lengths, such as circular steel columns and rectangular steel columns, thereby improving the size adaptability of the wind shield.

[0045] Regardless of the straight horizontal support 5 or the folded horizontal support 6, the two ends of each are provided with a connecting piece matched with the connecting plate 8 of the vertical support 3. When the connecting plate 8 is provided with a round hole, the connecting piece can adopt a hook structure. Through the cooperation of the hook and the round hole, the assembly of the horizontal support and the arc-shaped support can be quickly realized without the need for complex fastening procedures, thereby simplifying the installation process. Alternatively, fasteners such as bolts can be used to connect the horizontal support and the arc-shaped support.

[0046] III. The transparent PET coiled material is the main windproof body of the wind shield and has high light transmittance, which effectively guarantees the field of view and light conditions during welding operation. The PET coiled material is divided into middle coiled material, upper coiled material and lower coiled material according to the laying position and function, and the three form a closed windproof space in cooperation.

[0047] The intermediate coiled material is in a rectangular structure, and a plurality of hanging holes are formed near the upper edge and the lower edge. During installation, the intermediate coiled material is vertically laid between the vertical supports 3 of two adjacent arc-shaped supports through the cooperation of the hanging holes and the hooks 7 at the folding points of the arc-shaped supports, to form the side windproof layer of the wind shield.

[0048] The shapes of the upper coiled material and the lower coiled material are adapted according to the cross-sectional shape of the steel structure. When the steel structure is a cylinder, the upper coiled material and the lower coiled material are both in a fan ring structure. The fan ring refers to a part of a circular ring cut by a sector, which is surrounded by two concentric circular arcs and two radii. When the steel structure is a rectangular column, the upper coiled material and the lower coiled material are in a part of a shape with an outer circle and an inner square. In addition, the two curved edges of the upper coiled material and the lower coiled material are also provided with hanging holes, which are matched with the hooks 7 to realize the fixation with the arc-shaped supports and form the top and bottom windproof layers of the wind shield.

[0049] According to different operation requirements, the PET coiled material can also be designed differently. For a large-sized wind shield, workers can directly weld inside the shield, and the transparent PET material can ensure sufficient light and avoid visual obstruction. For a small-sized wind shield, two operation holes are formed on the PET coiled material, and workers can complete the welding operation by inserting their hands into the operation holes outside the shield, which not only ensures the windproof effect but also improves the operation convenience.

[0050] Four, wind speed measuring instrument and reminding device. In order to accurately adapt to the wind speed requirements of different welding processes, a wind speed measuring instrument is arranged near the welding position in the wind shield. Before operation, workers can read the real-time wind speed through the wind speed measuring instrument, and flexibly choose whether to install the upper coiled material and the lower coiled material according to the specified wind speed threshold of the current welding process. When the real-time wind speed is low, only the side windproof is required to meet the requirements, and only the intermediate coiled material can be installed; when the real-time wind speed is high, full-closed windproof is required, and the upper coiled material or the lower coiled material is added to realize the protection on demand.

[0051] The wind shield also includes a reminding device. When the real-time wind speed in the wind shield exceeds the specified wind speed threshold, the reminding device reminds the welder in real time through sound and light, and the welder can add the upper coiled material or the lower coiled material or increase the sealing of the coiled material according to the actual demand.

[0052] The high-altitude steel structure welding wind shield of the embodiment solves the problems of traditional windproof sheds, such as complicated disassembly and assembly and poor adaptability, through the standardized arc-shaped supports, adjustable horizontal supports and highly adaptive PET coiled material. Meanwhile, the wind speed measuring instrument is combined to realize accurate windproof, and the welding quality, construction efficiency and environmental protection requirements are taken into account, which can be repeatedly used and reduces the construction cost.

[0053] Embodiment two

[0054] The embodiment provides a high-altitude steel structure welding method, which is based on the wind shield for high-altitude steel structure welding in the first embodiment, and through standardization of an installation process and wind speed adaptive adjustment, welding operation can be efficiently carried out in a compliant wind speed environment, and specific steps are as follows.

[0055] S1: fixed installation of a single arc-shaped support. First, an arc-shaped support is selected, the arc-shaped support is fixedly connected by an upper support 1, a lower support 2 and a vertical support 3, and a surface of the upper support 1 and the lower support 2 is pre-installed with a suction accessory 4. The arc-shaped support is attached to a specified position of a steel structure to be welded, the straight angle edge connected with the suction accessory 4 in the upper support 1 is attached to a surface of the steel structure, then the suction accessory 4 is activated (if it is an electromagnet, the power supply is turned on, if it is a permanent magnet, it is directly adsorbed), the arc-shaped support is vertically and stably fixed on the steel structure through magnetic force, no additional fixed support point is needed, and the arc-shaped support is suitable for special areas such as the top of an independent steel column and a cantilever steel structure section.

[0056] S2: circumferential arrangement of multiple arc-shaped supports. The arc-shaped support fixed in S1 is used as a reference, the remaining arc-shaped supports are uniformly arranged at the same height position along the periphery of the steel structure to be welded. The number of arranged arc-shaped supports is determined according to the cross-sectional size of the steel structure and the welding operation range, so that the spacing between adjacent arc-shaped supports can meet the needs of subsequent horizontal support installation and PET coiled material laying, and the closure of the overall windproof space is ensured. Generally, one arc-shaped support can be arranged every 60° for a circular steel column, and two arc-shaped supports can be arranged on each side of a rectangular steel column.

[0057] S3: erection and connection of a horizontal support. According to the cross-sectional shape of the steel structure to be welded, a straight horizontal support 5 and / or a folded horizontal support 6 are selected for erection. When the folded horizontal support 6 is selected, the hinge structure in the middle of the folded horizontal support 6 is adjusted to change the included angle of the two horizontal rods, so that the folded horizontal support 6 can adapt to the cross-sectional profile of the steel structure.

[0058] The connecting pieces at both ends of the horizontal support are butted against the connecting plates 8 at both ends of the vertical support 3 in the adjacent arc-shaped support. If the connecting plates 8 are provided with round holes, the hook structures of the horizontal support are directly clamped into the round holes to complete rapid assembly, and if the connecting plates 8 are provided with other connecting forms, fasteners are used to complete fixation, so that the horizontal support and the arc-shaped support are firmly connected, a stable transverse support frame is formed, and the structural rigidity of the overall wind shield is enhanced.

[0059] S4: Vertical laying of transparent PET intermediate coiled material. Take the rectangular structure of the intermediate coiled material, check whether the hanging holes opened on the upper and lower edges are suitable. Hang the intermediate coiled material vertically between two adjacent arc-shaped supports, align and hang the hanging holes on the upper edge of the coiled material with the hooks 7 at the folding points of the upper arc-shaped supports, and align and hang the hanging holes on the lower edge with the hooks 7 at the folding points of the lower arc-shaped supports, ensure that the intermediate coiled material is tensioned, without excessive wrinkles or slack, and form the side windproof layer of the wind shield. Lay the intermediate PET coiled material between all adjacent arc-shaped supports to complete the closure of the side windproof space.

[0060] S5: Wind speed adaptation and selective hanging of upper and lower coiled materials. First, check the specified wind speed threshold of the current welding process, such as manual electric arc welding requiring wind speed ≤8m / s, then read the real-time wind speed data of the wind speed measuring instrument near the welding position in the wind shield. If the real-time wind speed is lower than the specified threshold, only the side windproof can meet the welding requirements, then there is no need to hang the upper and lower PET coiled materials; if the real-time wind speed is higher than the specified threshold, full-closed windproof is required, then according to the cross-sectional shape of the steel structure, select the appropriate upper and lower PET coiled materials (circular steel column selects the upper and lower coiled materials of fan ring structure, rectangular steel column selects the upper and lower coiled materials of outer circle and inner square shape), hang the edge hanging holes of the upper coiled material with the hooks 7 on the upper part of the arc-shaped support, and hang the arc edge hanging holes of the lower coiled material with the hooks 7 on the lower part of the arc-shaped support, complete the closure of the top and bottom windproof layers, achieve on-demand protection, and avoid resource waste or insufficient protection.

[0061] At the same time, at the specific position to be welded, PET coiled material with two operation holes can be selected, so that the position of the operation hole is aligned with the welding operation point, and the welder can perform subsequent welding outside the wind shield through the operation hole.

[0062] S6: Implementation of welding operation. After all the above steps are completed, again confirm whether the real-time wind speed in the wind shield meets the welding process requirements through the wind speed measuring instrument. When the wind speed meets the specified threshold, the worker stands outside the wind shield, inserts his hands into the wind shield through the operation hole on the PET coiled material, holds the welding equipment, and performs welding operation. Since the PET coiled material has high light transmittance, it can ensure clear vision during welding without the need for additional lighting equipment. At the same time, the closed windproof space can effectively avoid external airflow interference, ensure stable electric arc, reduce defects such as weld porosity and slag inclusion, and improve welding quality. During welding, the wind speed measuring instrument data can be checked at any time according to the operation requirements to ensure that the wind speed is always within the compliance range.

[0063] S7: Real-time wind speed reminding in welding operation. During the welding process, when the real-time wind speed exceeds the specified wind speed threshold, the reminding device reminds the welder in real time through sound, light and other ways. The welder can increase the upper coil or the lower coil according to the actual demand, check the lap tightness of the wind shield, and ensure that the construction environment meets the operation requirements.

[0064] S8: Disassembly and recycling of the wind shield. After the welding operation in the area is completed, the wind shield is disassembled in the reverse order of installation: first, the upper PET coil and the lower PET coil are removed, then the middle PET coil is removed, followed by the horizontal support, finally the suction accessory 4 is closed (the power of the electromagnet is turned off or the permanent magnet is removed), and all the arc-shaped supports are removed. The disassembled arc-shaped supports, horizontal supports, PET coils, wind speed measuring instruments and other components are cleaned and inspected, and after confirming that there is no damage, they are classified and stored for subsequent reuse, reducing construction costs and meeting the green construction concept.

[0065] The high-altitude steel structure welding method of the embodiment of the present application can create a local construction environment with no wind or little wind in a high-altitude windy environment and monitor the real-time welding wind speed, which is helpful for improving the welding quality.

[0066] The above is only the preferred embodiment of the present application, and it should be noted that for ordinary skilled persons in the technical field, several improvements and refinements can be made without departing from the technical principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A high-altitude steel structure welded windproof cover, characterized in that, Includes bow-shaped brackets, horizontal supports, and transparent roll materials; The bow-shaped bracket is composed of an upper support (1), a vertical support (3) and a lower support (2) connected in sequence. The upper support (1) and the lower support (2) are symmetrical and are equipped with an adsorption component (4). The bow-shaped bracket has a hook (7) for laying transparent roll material at the fold point. The vertical support (3) has connecting plates (8) for installing horizontal supports at both ends. The horizontal support includes a straight horizontal support (5) and / or a folded horizontal support (6). The folded horizontal support (6) has a hinge structure in the middle and connectors that match the connecting plate (8) at both ends. The transparent roll has hanging holes on its upper and lower edges that cooperate with the hook (7); the transparent roll includes an upper roll, a middle roll and a lower roll arranged from top to bottom, the middle roll is rectangular, and the upper roll and the lower roll are adapted to the cross-sectional shape of the steel structure.

2. The high-altitude steel structure welded windproof cover according to claim 1, characterized in that, The adsorption component (4) is a permanent magnet or an electromagnet; the electromagnet activates the adsorption function when connected to a 12V-24V DC power supply, and the overall adsorption force is greater than 1000N.

3. The high-altitude steel structure welded windproof cover according to claim 1, characterized in that, The upper support (1) is designed as a right-angled triangle structure, with an adsorption element (4) on one of its right-angled sides. This right-angled side is close to the surface of the steel structure during installation.

4. The high-altitude steel structure welded windproof cover according to claim 1, characterized in that, When the steel structure is a cylinder, the upper and lower rolls form a fan-ring structure; when the steel structure is a rectangular column, the upper and lower rolls form an outer circle and an inner square shape.

5. The high-altitude steel structure welded windproof cover according to claim 1, characterized in that, The transparent roll has a light transmittance of not less than 85% and a thickness of 0.5-1.2mm; the middle roll has an operating hole that allows an arm to be inserted.

6. The high-altitude steel structure welded windproof cover according to claim 1, characterized in that, It also includes an anemometer placed inside the windproof cover near the welding position, and a warning device for issuing an alert when the real-time wind speed exceeds a specified threshold.

7. A method for welding high-altitude steel structures, characterized in that, Includes the following steps: S1: Select an arc-shaped bracket and place it close to the designated position of the steel structure to be welded, so that the edges of the upper support (1) and the lower support (2) with the adsorption component (4) are in contact with the surface of the steel structure, and activate the adsorption component (4) to fix the arc-shaped bracket vertically. S2: Using the fixed bow-shaped bracket in S1 as a reference, bow-shaped brackets are evenly arranged around the outer perimeter of the steel structure at the same height. The number of brackets is determined according to the cross-sectional dimensions of the steel structure and the welding operation range. S3: Select straight horizontal support (5) and / or bent horizontal support (6) according to the cross-sectional shape of the steel structure, and adjust the included angle of the hinge structure of the bent horizontal support (6); fix the connecting parts at both ends of the horizontal support to the connecting plate (8) of the bow bracket; S4: Take the rectangular middle roll material, and use the hanging holes on its upper and lower edges to match the hooks (7) at the folding points of the bow-shaped brackets to vertically lay the middle roll material between the adjacent bow-shaped brackets; S5: Determine the specified wind speed threshold for the current welding process and read the real-time wind speed from the wind speed measuring instrument; if the real-time wind speed is higher than the threshold, select an upper roll material and / or a lower roll material with a suitable shape and fix it by using the hanging holes and hooks (7); S6: After confirming that the wind speed inside the windproof cover meets the specified threshold, the welding worker can carry out welding operations inside or outside the windproof cover, and monitor the wind speed in real time during the welding process. S7: During the welding process, if the warning device issues a wind speed exceeding the standard warning, take measures such as increasing the upper and lower rolls of material, increasing the overlap width of transparent rolls, and strengthening the sealing of the overlaps; S8: After welding is completed, disassemble the windproof cover in the reverse order of installation. Clean and inspect each component, then classify and store it for reuse.

8. The welding method according to claim 7, characterized in that, In step S2, an arched bracket is arranged every 60° on the circular steel column, and two arched brackets are arranged on each side of the rectangular steel column.

9. The welding method according to claim 7, characterized in that, In step S6, if the welder is working outside the windproof cover, an intermediate roll material with an operating hole is selected so that the operating hole is aligned with the welding operation point; the worker's hands are inserted into the windproof cover through the operating hole to hold the welding equipment and perform welding.

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