A telescopic welding platform suitable for high-altitude welding of steel columns and a construction method

Abstract

The application provides a telescopic welding platform suitable for high-altitude welding of steel columns, which comprises a first platform and a second platform, the first platform is connected with the second platform in a plug-in mode, and the first platform and the second platform are movable relative to each other for relative position adjustment; the first platform is provided with a first platform plate, the second platform is provided with a second platform plate, the first platform plate is provided with a first groove, the second platform plate is provided with a second groove, the first groove and the second groove are arranged oppositely and form a through hole structure, so that one end of a steel column can pass through the through hole structure, and the welding platform is arranged on the steel column to be welded with another steel column. The application has the beneficial effects of providing an operation platform for butt welding of large-section steel columns, ensuring welding quality, improving welding efficiency, eliminating safety hazards, and the welding platform can be used in butt welding of large-section steel columns in field construction, ensuring welding seam quality, operation safety and rapidity.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building construction, and particularly relates to a telescopic welding platform suitable for high-altitude welding of steel columns and a construction method. BACKGROUND

[0002] Steel structure buildings have developed rapidly in China in recent years. Compared with concrete structures, steel structures have the advantages of less total steel consumption, factory production of components, good seismic performance, fast installation speed, and low cost, and are widely used in industrial and civil buildings. With the continuous maturity of steel structure building technology, the building height is getting higher and higher. Due to the transportation and lifting restrictions, the steel columns need to be segmented in the factory and connected on site. However, there is no corresponding welding platform available for the existing high-altitude welding of steel columns. The operation personnel have high risks in high-altitude welding operations, and the welding quality is low. If the columns are connected on the ground, the production efficiency is low after welding and hoisting. SUMMARY

[0003] In view of the above problems, the present application provides a telescopic welding platform suitable for high-altitude welding of steel columns and a construction method to solve the above or other former problems existing in the prior art.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is: a telescopic welding platform suitable for high-altitude welding of steel columns, comprising a first platform and a second platform, the first platform and the second platform are connected by insertion, and the first platform and the second platform can move relative to each other for relative position adjustment.

[0005] The first platform is provided with a first platform plate, the second platform is provided with a second platform plate, the first platform plate is provided with a first groove, the second platform plate is provided with a second groove, the first groove and the second groove are oppositely arranged to form a through hole structure, so that one end of a steel column passes through the through hole structure, and the welding platform is arranged on the steel column to weld with another steel column.

[0006] Further, the first platform further comprises a first guardrail, a second guardrail and a third guardrail, the first guardrail, the second guardrail and the third guardrail are arranged along the circumferential side of the first platform plate and are connected in sequence.

[0007] The second guardrail is arranged at the end of the first platform away from the first groove, and the first guardrail and the third guardrail are arranged on both sides of the second guardrail.

[0008] Further, the second platform further comprises a fourth guardrail, a fifth guardrail and a sixth guardrail, the fourth guardrail, the fifth guardrail and the sixth guardrail are arranged along the circumferential side of the second platform plate and are connected in sequence.

[0009] The fifth guardrail is arranged at the end of the second platform away from the second groove, and the fourth guardrail and the sixth guardrail are arranged on both sides of the fourth guardrail.

[0010] Further, the second guardrail is arranged opposite to the fifth guardrail, the sixth guardrail is arranged in lap with the first guardrail, and the sixth guardrail and the first guardrail can relatively move close to or away from each other, so that the length of the lap portion between the sixth guardrail and the first guardrail becomes smaller or larger.

[0011] The fourth guardrail is arranged in lap with the third guardrail, and the fourth guardrail and the third guardrail can relatively move close to or away from each other, so that the length of the lap portion between the fourth guardrail and the third guardrail becomes smaller or larger.

[0012] Further, the first platform is provided with a first expansion joint plate, a first expansion joint beam and first platform beams, at one end of the first platform plate provided with the first groove, a plurality of first platform beams are sequentially arranged along the direction from the first guardrail to the third guardrail, and the plurality of first platform beams are all arranged in parallel with the first guardrail.

[0013] The first expansion joint plate is arranged at one side of the first groove, and the two sides of the first expansion joint plate are respectively connected with the two adjacent first platform beams, and the first expansion joint plate protrudes from the end of the first platform plate.

[0014] One end of the first expansion joint beam is arranged in the first platform beam on the two sides of the first expansion joint plate and connected with the first platform beam, and the other end is located outside the first platform beam, and the first expansion joint beam is arranged in parallel with the first platform beam.

[0015] Further, the second platform is provided with a second expansion joint plate, a second expansion joint beam and second platform beams, at one end of the second platform plate provided with the second groove, a plurality of second platform beams are sequentially arranged along the direction from the fourth guardrail to the sixth guardrail, and the plurality of second platform beams are all arranged in parallel with the fourth guardrail.

[0016] The second expansion joint plate is arranged at one side of the second groove, and the two sides of the second expansion joint plate are respectively connected with the two adjacent second platform beams, and the second expansion joint plate protrudes from the end of the second platform plate.

[0017] One end of the second expansion joint beam is arranged in the second platform beam on the two sides of the second expansion joint plate and connected with the second platform beam, and the other end is located outside the second platform beam, and the second expansion joint beam is arranged in parallel with the second platform beam.

[0018] Further, the second expansion joint plate corresponds to the positions of the two adjacent first platform beams on one side of the first groove which are not provided with the first expansion joint plate, the second expansion joint plate is inserted between the two adjacent first platform beams, and the two adjacent first platform beams are both provided with limiting pieces on the opposite surfaces, the limiting pieces and the first platform plate have a first gap therebetween, and the second expansion joint plate is inserted into the first gap.

[0019] The first expansion joint plate is inserted between the two adjacent second platform beams on the side of the second groove without the second expansion joint plate, and the two adjacent second platform beams are provided with a limiting piece on the opposite surface, and the limiting piece and the second platform plate have a second gap therebetween, and the first expansion joint plate is inserted into the second gap.

[0020] Further, the first expansion beam located outside the first platform beam is provided with at least two first through holes, and the second expansion beam located outside the second platform beam is provided with at least two second through holes.

[0021] The second expansion beam on the two sides of the second expansion joint plate is respectively inserted into two adjacent first platform beams and fixed by a fixing piece; the two adjacent first platform beams are each provided with a plurality of first limiting holes, and the positioning piece is sequentially inserted into the first through hole on the second expansion beam and the first limiting hole, thereby fixing the second expansion beam and the first platform beam.

[0022] The first expansion beam on the two sides of the first expansion joint plate is respectively inserted into two adjacent second platform beams and fixed by a fixing piece; the two adjacent second platform beams are each provided with a plurality of second limiting holes, and the positioning piece is sequentially inserted into the second through hole on the first expansion beam and the second limiting hole, thereby fixing the first expansion beam and the second platform beam.

[0023] Further, the side of the first platform plate and the second platform plate away from the side provided with the guardrail is provided with a fixed support for connecting with the steel column; the fixed support comprises a platform connecting plate, a column upper support plate and a support rib plate, the platform connecting plate is connected with the first platform plate and the second platform plate respectively, the platform connecting plate is detachably connected with the column upper support plate, the support rib plate is fixedly connected with the column upper support plate, and the support rib plate and the column upper support plate are perpendicular.

[0024] A construction method of a telescopic welding platform suitable for high-altitude welding of a steel column, comprising the following steps:

[0025] For the steel column that needs to be butt-jointed on site, the column upper support plate and the support rib plate are welded on the column body of the steel column;

[0026] After the lower column is installed, the welding platform is hoisted by using a hoisting machine, the welding platform is sleeved into the steel column through the through hole structure, and the welding platform is moved downward, the platform connecting plate contacts the column upper support plate on the steel column, the platform connecting plate and the column upper support plate are connected through the support connecting piece, and are fixed;

[0027] The welding platform is installed;

[0028] The welding equipment is hoisted into the welding platform, the column is hoisted, and after the elevation and perpendicularity are adjusted, the column body positioning lug is temporarily fixed;

[0029] The upper column and the lower column are spliced at a fusion welding position, after welding and flaw detection, the welding equipment is removed, the support connecting piece is loosened, the welding platform is lifted by a hoisting machine, and the welding platform is disassembled.

[0030] Due to the above technical scheme, the structure is simple and convenient to use, the first platform and the second platform are provided, the first platform and the second platform can move relative to each other, the size of the through hole structure formed by the first platform and the second platform is adjusted, the welding platform can meet the use requirements of high-altitude welding of steel columns of different sizes, can provide an operation platform for butt welding of large-section steel columns, ensure welding quality, improve welding efficiency, eliminate safety hazards, the welding platform can be used in butt welding of large-section steel columns in field construction, ensure welding quality, operation safety and rapidity, can be widely used in butt welding of steel columns of various specifications, can be repeatedly used, saves construction measure consumables, and reduces costs, the device is convenient and fast to operate, simple and safe in structure, large-section steel column butt welding is performed by using the welding platform, production efficiency is improved, operation risk of installation operators is reduced, and installation precision can be effectively controlled. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic view of a welding platform of an embodiment of the present application;

[0032] Figure 2 is a structural schematic view of a stretched state of a welding platform of an embodiment of the present application;

[0033] Figure 3 is a structural schematic view of a second platform of an embodiment of the present application;

[0034] Figure 4 is a structural schematic view of a welding platform of an embodiment of the present application from a top view;

[0035] Figure 5 is a structural schematic view of a first platform of an embodiment of the present application from a top view;

[0036] Figure 6 is a structural schematic view of A-A of Figure 5 ;

[0037] Figure 7 is an enlarged structural schematic view of A of Figure 6 ;

[0038] Figure 8 is an enlarged structural schematic view of B of Figure 6 ;

[0039] Figure 9 is a structural schematic view of a fixed support of an embodiment of the present application;

[0040] Figure 10 The figure is a schematic structural diagram of a welding platform installed on a steel column according to an embodiment of the present invention.

[0041] In the picture:

[0042] 1. First platform 2. Second platform 3. Lifting lug

[0043] 4. Fixed support 5. Skirting board 6. Limiting piece

[0044] 7. Reinforcement rib 8. Steel column 100. First guardrail

[0045] 101, second guardrail 102, third guardrail 103, first platform beam

[0046] 104, first platform plate 105, first telescopic beam 106, first expansion joint plate

[0047] 107, first limiting hole 108, first through hole 200, fourth guardrail

[0048] 201, fifth guardrail 202, sixth guardrail 203, second expansion joint plate

[0049] 204, second through hole 205, second telescopic beam 206, second platform beam

[0050] 207, second limiting hole 208, second platform plate 400, platform connecting plate

[0051] 401, column support plate 402, support rib plate DETAILED DESCRIPTION

[0052] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0053] Figure 1 A structural schematic diagram of an embodiment of the present invention is shown. This embodiment relates to a retractable welding platform and construction method suitable for high-altitude welding of steel columns. The platform is used for high-altitude welding of steel columns, provides an operating platform for butt welding of large-section steel columns, ensures welding quality, improves welding efficiency, and eliminates safety hazards.

[0054] A retractable welding platform suitable for high-altitude welding of steel columns, such as Figures 1-3 As shown, it includes a first platform 1 and a second platform 2, which are plug-connected and can move relative to each other to adjust their relative positions, so as to provide an operating platform for welding steel columns of different sizes, so that the welding platform can meet the requirements of welding steel columns of different sizes;

[0055] The first platform 1 is provided with a first platform plate 104, and the second platform 2 is provided with a second platform plate 208. The first platform plate 104 is provided with a first recess, and the second platform plate 208 is provided with a second recess. The first recess and the second recess are oppositely arranged to form a through hole structure, so that one end of a steel column passes through the through hole structure, and the welding platform is arranged on the steel column to be welded with another steel column. When the two steel columns are welded, the welding platform is arranged on one of the steel columns, one end of the steel column passes through the through hole structure and is connected with the other steel column to be welded.

[0056] Preferably, in the embodiment, the first recess and the second recess are both U-shaped recesses, and the first platform plate 104 and the second platform plate 208 are both U-shaped plate structures.

[0057] The first platform 1 further comprises a first guardrail 100, a second guardrail 101 and a third guardrail 102. The first guardrail 100, the second guardrail 101 and the third guardrail 102 are arranged along the circumferential side of the first platform plate 104 and are sequentially connected. The second guardrail 101 is arranged at the end of the first platform plate 104 away from the first recess. The first guardrail 100 and the third guardrail 102 are arranged on both sides of the second guardrail 101, i.e., the first guardrail 100, the second guardrail 101 and the third guardrail 102 are arranged on the other three side edges of the first platform plate 104 except the side edge where the recess is arranged. The first guardrail 100, the second guardrail 101 and the third guardrail 102 are arranged perpendicularly to the first platform plate 104 and are located at the edge of the side of the first platform plate 104. The first guardrail 100, the second guardrail 101 and the third guardrail 102 and the first platform plate 104 form a single-piece welding platform structure. The first guardrail 100, the second guardrail 101 and the third guardrail 102 are fixedly connected with the first platform plate 104, and the fixed connection mode is preferably welding. The third guardrail 102 is fixedly connected with the circumferential end of the first platform plate 104, and the first guardrail 100 and the second guardrail 101 are fixedly installed on the side of the first platform plate 104.

[0058] The second platform 2 also includes a fourth guardrail 200, a fifth guardrail 201 and a sixth guardrail 202. The fourth guardrail 200, the fifth guardrail 201 and the sixth guardrail 202 are arranged along the circumference of the second platform plate 208 and are connected in sequence; the fifth guardrail 201 is arranged at the end of the second platform plate 208 away from the second groove, and the fourth guardrail 200 and the sixth guardrail 202 are arranged on both sides of the fourth guardrail 200, that is, the fourth guardrail 200, the fifth guardrail 201 and the sixth guardrail 202 are respectively arranged at the other three sides of the second platform plate 208 except the side with the groove, and the fourth guardrail 200, the fifth guardrail 201 and the sixth guardrail 202 are respectively arranged perpendicular to the second platform plate 208, and are all located at the edge of one side of the second platform plate 208. The fourth guardrail 200, the fifth guardrail 201, the sixth guardrail 202, and the second platform plate 208 form another monolithic welded platform structure. The fourth guardrail 200, the fifth guardrail 201, and the sixth guardrail 202 are each fixedly connected to the second platform plate 208, preferably by welding. The sixth guardrail 202 is fixedly connected to the peripheral end of the second platform plate 208. The fifth guardrail 201 and the fourth guardrail 200 are each fixedly mounted on a side surface of the first platform plate 104.

[0059] Two single-piece welding platforms are plug-in and can move relative to each other to form a spatially changeable welding platform structure, providing an operating platform for butt welding of large-section steel columns, making it convenient for welding equipment to be placed on the welding platform, and the butt surfaces of the two steel columns to be welded are located in the space of the welding platform, and the welding equipment welds the butt surfaces of the two steel columns to be welded.

[0060] The second guardrail 101 is arranged opposite to the fifth guardrail 201, the sixth guardrail 202 is arranged in lap with the first guardrail 100, and the sixth guardrail 202 and the first guardrail 100 can relatively move close to or away from each other, so that the length of the lap part between the sixth guardrail 202 and the first guardrail 100 becomes smaller or larger; the fourth guardrail 200 is arranged in lap with the third guardrail 102, and the fourth guardrail 200 and the third guardrail 102 can relatively move close to or away from each other, so that the length of the lap part between the fourth guardrail 200 and the third guardrail 102 becomes smaller or larger. When the first platform 1 and the second platform 2 are connected in plug-in, the first platform plate 104 and the second platform plate 208 are arranged opposite to each other, the first recess and the second recess are arranged opposite to each other, the sixth guardrail 202 is located inside the first guardrail 100, the third guardrail 102 is located inside the fourth guardrail 200, the first guardrail 100 and the sixth guardrail 202 have an overlapping part, the fourth guardrail 200 and the third guardrail 102 have an overlapping part, when the first platform plate 104 relatively moves close to the second platform plate 208, the length of the overlapping part of the first guardrail 100 and the sixth guardrail 202 becomes longer, the length of the overlapping part of the fourth guardrail 200 and the third guardrail 102 becomes longer, and then the size of the through hole formed by the first recess and the second recess becomes smaller, at this time, the welding platform is suitable for small-size steel column welding; when the first platform plate 104 relatively moves away from the second platform plate 208, the length of the overlapping part of the first guardrail 100 and the sixth guardrail 202 becomes shorter, the length of the overlapping part of the fourth guardrail 200 and the third guardrail 102 becomes shorter, and then the size of the through hole formed by the first recess and the second recess becomes larger, at this time, the welding platform is suitable for large-size steel column welding.

[0061] The first guardrail 100, the second guardrail 101, the third guardrail 102, the fourth guardrail 200, the fifth guardrail 201 and the sixth guardrail 202 are all provided with a kick plate 5, the kick plate 5 is fixedly arranged at one end of the first guardrail 100, the second guardrail 101, the third guardrail 102 and the first platform plate 104, and the kick plate 5 is fixedly arranged at one end of the fourth guardrail 200, the fifth guardrail 201 and the sixth guardrail 202 and the second platform plate 208, that is, the kick plates 5 on each guardrail form a ring structure and are arranged around the periphery of the first platform plate 104 and the second platform plate 208. The arrangement of the kick plate 5 can prevent articles on the welding platform from falling from a high altitude, and can also prevent welding sparks from falling.

[0062] As Figures 2-8As shown, the first platform 1 is provided with a first expansion joint plate 106, a first expansion beam 105 and a first platform beam 103, at one end of the first platform plate 104 provided with a first recess, a plurality of first platform beams 103 are sequentially arranged along the direction from the first guardrail 100 to the third guardrail 102, and the plurality of first platform beams 103 are all arranged in parallel with the first guardrail 100; the first platform beam 103 is arranged on the other side of the first platform plate 104 away from the third guardrail 102. Preferably, in the embodiment, the number of the first platform beams 103 is four, which are arranged in two groups, and the two groups of first platform beams 103 are arranged on the flat plate portions on the two sides of the first recess respectively, and the two first platform beams 103 in each group are respectively located on the two side edges of the flat plate portion and are arranged along the length direction of the flat plate portion, and the four first platform beams 103 are all arranged in parallel with the first guardrail 100.

[0063] The first expansion joint plate 106 is arranged on one side of the first recess, and the two sides of the first expansion joint plate 106 are respectively connected with the two adjacent first platform beams 103, and the first expansion joint plate 106 protrudes from the end of the first platform plate 104; the first expansion joint plate 106 extends the length of the flat plate portion on the side, one end of the first expansion joint plate 106 is fixedly connected with the two adjacent first platform beams 103 respectively, and the other end of the first expansion joint plate 106 extends out of the end of the first platform plate 104, so that when the first platform plate 104 and the second platform plate 208 are relatively far away from each other, the gap between the two is filled by the first expansion joint plate 106, and the area of the first platform plate 104 and the second platform plate 208 is expanded.

[0064] One end of the first expansion beam 105 is arranged in the first platform beam 103 on the two sides of the first expansion joint plate 106 and is connected with the first platform beam 103, and the other end is located outside the first platform beam 103, and the first expansion beam 105 is arranged in parallel with the first platform beam 103. The end of the first expansion beam 105 located outside the first platform beam 103 is flush with the end of the first expansion joint plate 106 located outside the first platform plate 104, and the first expansion beam 105 is arranged to position the first platform plate 104 and the second platform plate 208 when they are connected by insertion, and the first expansion beam 105 is inserted into the platform beam on the second platform plate 208 to realize the insertion connection.

[0065] The first expansion joint plate 106 and the first platform plate 104 have a certain gap, which is 5-10mm, which is selected according to actual needs. The side of the first expansion joint plate 106 away from the first platform plate 104 is provided with a reinforcing rib 7 to reinforce the mechanical strength of the first expansion joint plate 106. In the embodiment, preferably, the first expansion beam 105 and the first platform beam 103 are both square tubes.

[0066] The second platform 2 is provided with a second expansion joint plate 203, a second expansion beam 205 and a second platform beam 206. The second platform plate 208 is provided with a second recess at one end. A plurality of second platform beams 206 are sequentially arranged along the direction from the fourth guardrail 200 to the sixth guardrail 202, and the plurality of second platform beams 206 are arranged in parallel with the fourth guardrail 200. The second platform beam 206 is arranged on the other side of the second platform plate 208 away from the fourth guardrail 200. Preferably, in the embodiment, the number of second platform beams 206 is four, which are arranged in two groups. The two groups of second platform beams 206 are arranged on the flat plate portions on both sides of the second recess, respectively. The two second platform beams 206 in each group are arranged on both sides of the flat plate portion along the length direction of the flat plate portion, and the four second platform beams 206 are arranged in parallel with the fourth guardrail 200.

[0067] The second expansion joint plate 203 is arranged on one side of the second recess, and the two sides of the second expansion joint plate 203 are connected with the two adjacent second platform beams 206, respectively. The second expansion joint plate 203 protrudes from the end of the second platform plate 208. The second expansion joint plate 203 extends the length of the flat plate portion on the side. One end of the second expansion joint plate 203 is fixedly connected with the two adjacent second platform beams 206, respectively. The other end of the second expansion joint plate 203 extends out of the end of the second platform plate 208. When the second platform plate 208 is relatively far away from the first platform plate 104, the gap between the two is filled by the second expansion joint plate 203, and the area of the first platform plate 104 and the second platform plate 208 is expanded.

[0068] One end of the second expansion beam 205 is arranged in the second platform beam 206 on both sides of the second expansion joint plate 203 and connected with the second platform beam 206. The other end of the second expansion beam 205 is arranged outside the second platform beam 206, and the second expansion beam 205 is arranged in parallel with the second platform beam 206. The end of the second expansion beam 205 outside the second platform beam 206 is flush with the end of the second expansion joint plate 203 outside the second platform plate 208. The second expansion beam 205 is arranged to position the first platform plate 104 and the second platform plate 208 when they are connected by insertion. The second expansion beam 205 is inserted into the platform beam on the first platform plate 104 to realize the insertion connection. In the embodiment, the second expansion beam 205 and the second platform beam 206 are both square tubes.

[0069] The first expansion joint plate 106 is not arranged corresponding to the second expansion joint plate 203, and the first expansion joint plate 106 and the second expansion joint plate 203 are respectively located on two sides of the first recess. Then, the first expansion beam 105 is not arranged corresponding to the second expansion beam 205, and the first expansion beam 105 and the second expansion beam 205 are respectively located on two sides of the first recess. When the first platform plate 104 and the second platform plate 208 are inserted, the first expansion beam 105 is inserted into the second platform beam 206 corresponding to the position, and the second expansion beam 205 is inserted into the first platform beam 103 corresponding to the position. The first platform plate 104 and the second platform plate 208 are guided to move relative to each other, and are positioned when the first platform plate 104 and the second platform plate 208 are inserted.

[0070] The second expansion joint plate 203 and the second platform plate 208 have a gap of 5-10 mm, which is selected according to actual needs. The side of the second expansion joint plate 203 away from the second platform plate 208 is provided with a reinforcing rib 7 to reinforce the mechanical strength of the second expansion joint plate 203.

[0071] The cross-sectional area of the first expansion beam 105 is smaller than that of the second platform beam 206, so that the first expansion beam 105 can be inserted into the second platform beam 206 and move along the length direction of the second platform beam 206. The cross-sectional area of the second expansion beam 205 is smaller than that of the first platform beam 103, so that the second expansion beam 205 can be inserted into the first platform beam 103 and move along the length direction of the first platform beam 103.

[0072] The part of the first expansion beam 105 located outside the first platform beam 103 is provided with at least two first through holes 108, and a plurality of first through holes 108 are arranged in sequence along the direction from the free end to the other end of the first expansion beam 105. The first through hole 108 is arranged to facilitate the fixed connection of the first expansion beam 105 and the second platform beam 206. The part of the second expansion beam 205 located outside the second platform beam 206 is provided with at least two second through holes 204, and a plurality of second through holes 204 are arranged in sequence along the direction from the free end to the other end of the second expansion beam 205. The second through hole 204 is arranged to facilitate the fixed connection of the second expansion beam 205 and the first platform beam 103.

[0073] The second expansion joint plate 203 corresponds to the position of two adjacent first platform beams 103 on one side of the first groove that are not provided with the first expansion joint plate 106. The second expansion joint plate 203 is inserted between the two adjacent first platform beams 103, and a limiter 6 is provided on the opposite surfaces of the two adjacent first platform beams 103. There is a first gap between the limiter 6 and the first platform plate 104, and the second expansion joint plate 203 is inserted into the first gap; preferably, in this embodiment, the limiter 6 is an angle steel, and the first gap is greater than the thickness of the second expansion joint plate 203, so that the second expansion joint plate 203 can be inserted into the first gap, and the limiter 6 supports and limits the second expansion joint plate 203. The length of the limiter 6 on the first platform plate 104 is consistent with the length of the second telescopic beam 205, so that the second expansion joint plate 203 is always located on the limiter 6 during the movement, so that the limiter 6 always supports the second expansion joint plate 203.

[0074] The second telescopic beams 205 on both sides of the second expansion joint plate 203 are respectively inserted into the two adjacent first platform beams 103 and fixed by fixing parts; a plurality of first limiting holes 107 are provided on the two adjacent first platform beams 103, and the positioning parts are sequentially inserted into the first through holes 108 and the first limiting holes 107 on the second telescopic beam 205 to fix the second telescopic beam 205 and the first platform beam 103. The fixing part is a pin. After the relative position between the second telescopic beam 205 and the first platform beam 103 is determined, the pin is inserted into the first through hole 108 and the first limiting hole 107 to connect the second telescopic beam 205 and the first platform beam 103 together. The two first through holes 108 and the corresponding first limiting holes 107 are both inserted with pins, thereby connecting the first platform 1 and the second platform 2 together, and the first platform 1 and the second platform 2 no longer move, so as to facilitate welding of the steel column;

[0075] The first expansion joint plate 106 corresponds to the position of two adjacent second platform beams 206 on one side of the second groove that are not provided with the second expansion joint plate 203. The first expansion joint plate 106 is inserted between the two adjacent second platform beams 206, and a limiter 6 is provided on the opposite surfaces of the two adjacent second platform beams 206. A second gap is provided between the limiter 6 and the second platform plate 208, and the first expansion joint plate 106 is inserted into the second gap; preferably, in this embodiment, the second gap is greater than the thickness of the first expansion joint plate, so that the first expansion joint plate 106 can be inserted into the second gap, and the limiter 6 supports and limits the first expansion joint plate 106. The length of the limiter 6 on the second platform plate 208 is consistent with the length of the first expansion joint beam 105, so that the first expansion joint plate 106 is always located on the limiter 6 during the movement process, so that the limiter 6 always supports the first expansion joint plate 106;

[0076] The first expansion beam 105 on both sides of the first expansion joint plate 106 is inserted into two adjacent second platform beams 206 respectively, and is fixed by a fixing member; a plurality of second limiting holes 207 are arranged on the two adjacent second platform beams 206, and a positioning member is inserted into the second through hole 204 on the first expansion beam 105 and the second limiting hole 207 in sequence, so as to fix the first expansion beam 105 and the second platform beam 206, and the fixing member is a pin shaft. When the relative position between the first expansion beam 105 and the second platform beam 206 is determined, the pin shaft is inserted into the second through hole 204 and the second limiting hole 207, so as to connect the first expansion beam 105 and the second platform beam 206 together. The pin shaft is inserted into the two second through holes 204 and the second limiting holes 207 corresponding thereto, so as to connect the first platform 1 and the second platform 2 together. The first platform 1 and the second platform 2 are no longer moved, so as to weld the steel column.

[0077] The first platform 1 and the second platform 2 are adjusted in position by relative movement, so that the welding platform can be arranged on steel columns of different sizes. When the position between the first platform 1 and the second platform 2 is determined, one first through hole 108 on the first expansion beam 105 corresponds to one second limiting hole 207 on the second platform beam 206, and is fixed and connected by a pin shaft. One second through hole 204 on the second expansion beam 205 corresponds to one first limiting hole 107 on the first platform beam 103, and is fixed and connected by a pin shaft. The first platform 1 and the second platform 2 are connected together, and the size of the through hole formed by the first recess and the second recess is fixed. When it is necessary to adjust the size of the through hole structure, the pin shafts on the first expansion beam 105 and the second expansion beam 205 are pulled out, the first platform 1 and the second platform 2 are pulled apart, and then the pin shafts are inserted into the through holes on the first expansion beam 105 and the second expansion beam 205 again.

[0078] The number of the first limiting holes 107 is a plurality, which are arranged at equal intervals along the length direction of the first platform beam 103. The number of the second limiting holes 207 is a plurality, which are arranged at equal intervals along the length direction of the second platform beam 206.

[0079] As Figure 9As shown, the first platform plate 104 and the side of the second platform plate 208 provided with the telescopic beam are each provided with a fixed support 4 for connecting with the steel column; the fixed support 4 comprises a platform connecting plate 400, a column upper support plate 401 and a support rib plate 402, the platform connecting plate 400 is connected with the first platform plate 104 and the second platform plate 208 respectively, the platform connecting plate 400 is detachably connected with the column upper support plate 401, the support rib plate 402 is fixedly connected with the column upper support plate 401, and the support rib plate 402 is arranged perpendicularly to the column upper support plate 401, and the platform connecting plate 400 is connected with the column upper support plate 401 through bolts. Preferably, in the embodiment, the number of the fixed supports 4 is four, two fixed supports 4 are fixedly arranged on the first platform plate 104, the two fixed supports 4 are arranged oppositely, and are located on the flat plate portions on both sides of the first groove, two fixed supports 4 are fixedly arranged on the second platform plate 208, the two fixed supports 4 are arranged oppositely, and are located on the flat plate portions on both sides of the second groove, and the fixed supports 4 on the first platform plate 104 correspond to the fixed supports 4 on the second platform plate 208 one by one, so that the four fixed supports 4 are fixedly connected with the steel column, are fixedly arranged on the circumferential side of the steel column, are located on the same plane, and the welding platform is kept in a horizontal state during welding.

[0080] A lifting lug 3 is fixedly installed on the circumferential end surface of the first platform plate 104 and the second platform plate 208, so as to facilitate the use during hoisting of the welding platform.

[0081] When the welding platform is assembled, all parts of the first platform 1 and the second platform 2 are cut and blanked, and the telescopic beam and the platform beam inserted into the telescopic beam are punched according to actual requirements; all parts are assembled, the first guardrail 100, the second guardrail 101 and the third guardrail 102 are sequentially fixedly welded on one side surface of the first platform plate 104, the four first platform beams 103 are welded on the other side surface of the first platform plate 104, the limiting piece 6 is welded and connected with the first platform beam 103, the first telescopic joint plate 106 is welded and connected with the first platform beam 103, the first telescopic beam 105 is fixedly connected with the first platform beam 103, the lifting lug 3 and the platform connecting plate 400 are welded, and the structure of the first platform 1 is formed; similarly, the second platform 2 is assembled in the same way.

[0082] Assembly of the first platform 1 and the second platform 2: the telescopic beams of the two platform plates are inserted into the corresponding platform beams of the other platform plate, the through holes and the limiting holes are aligned, the pin shafts are inserted, and the through holes on each telescopic beam are inserted into the pin shafts. The telescopic joint plate is simultaneously inserted into the gap between the limiting piece 6 and the platform plate, the limiting piece 6 limits and supports the telescopic joint plate when the platform telescopes.

[0083] A construction method of a telescopic welding platform suitable for high-altitude welding of a steel column, as shown in the drawings, comprises the following steps: Figure 10 As shown, comprising the following steps:

[0084] For the steel column 8 which needs to be butt-jointed on site, the column upper support plate 401 and the support rib plate 402 are welded on the column of the steel column 8;

[0085] After the lower column is installed, the welding platform is hoisted by the hoisting machinery, is sleeved into the steel column 8 from the through-hole structure, and is moved downward, the platform connecting plate 400 contacts the column upper support plate 401 on the steel column, the platform connecting plate 400 is connected with the column upper support plate 401 through the support connecting piece, and is fixed; the support connecting piece is preferably a fastening bolt.

[0086] The welding platform is installed;

[0087] The welding equipment is hoisted into the welding platform, the column is hoisted, and after the elevation and the perpendicularity are adjusted, the column body positioning lug is temporarily fixed;

[0088] The upper column and the lower column are butt-jointed and are penetration welded, after welding is completed and flaw detection is qualified, the welding equipment is removed, the support connecting piece is loosened, the welding platform is hoisted by the hoisting machinery, and the welding platform is disassembled. The fastening bolt of the fixed support 4 is loosened, the welding platform is hoisted by the hoisting machinery, and the welding platform can be removed.

[0089] Due to the above technical scheme, the structure is simple and convenient to use, has the first platform and the second platform, the first platform and the second platform can be relatively moved, the size of the through-hole structure formed by the first platform and the second platform is adjusted, so that the welding platform meets the use requirement of high-altitude welding of steel columns of different sizes; can provide an operation platform for butt welding of large-section steel columns, ensure welding quality, improve welding efficiency, eliminate safety hazards; the welding platform can be used in butt welding of large-section steel columns in field construction, ensure welding quality, operation safety, rapidity; can be widely applied to butt welding of steel columns of various specifications in various occasions, and can be repeatedly used, saves construction measure consumables, reduces cost; the device is convenient and fast to operate, the structure is simple and safe, large-section steel column butt welding is carried out by using the welding platform, production efficiency is improved, operation risk of installation operators is reduced, and installation precision can be effectively controlled.

[0090] The embodiments of the application are described in detail above, but the content described is only the preferred embodiments of the application, and cannot be considered as limiting the implementation scope of the application. Any equivalent changes and improvements made according to the scope of the application should still belong to the patent coverage range of the application.

Claims

1. A retractable welding platform suitable for high-altitude welding of steel columns, characterized by: The first platform and the second platform are plug-connected and can move relative to each other to adjust their relative positions. The first platform is provided with a first platform plate, the second platform is provided with a second platform plate, the first platform plate is provided with a first groove, the second platform plate is provided with a second groove, the first groove and the second groove are arranged opposite to each other to form a through-hole structure, so that one end of a steel column can pass through the through-hole structure, the welding platform is provided on the steel column, and is welded to another steel column; The first platform further includes a first guardrail, a second guardrail and a third guardrail, wherein the first guardrail, the second guardrail and the third guardrail are arranged along the circumference of the first platform plate and are connected in sequence; The second guardrail is provided at an end of the first platform away from the first groove, and the first guardrail and the third guardrail are provided on both sides of the second guardrail; The second platform further includes a fourth guardrail, a fifth guardrail and a sixth guardrail, wherein the fourth guardrail, the fifth guardrail and the sixth guardrail are arranged along the circumference of the second platform plate and are connected in sequence; The fifth guardrail is provided at an end of the second platform away from the second groove, and the fourth guardrail and the sixth guardrail are provided on both sides of the fourth guardrail; The first platform is provided with a first expansion joint plate, a first expansion beam and a first platform beam. At one end of the first platform plate provided with the first groove, a plurality of first platform beams are sequentially arranged along the direction from the first guardrail to the third guardrail, and the plurality of first platform beams are all arranged parallel to the first guardrail. The first expansion joint plate is provided on one side of the first groove, and both sides of the first expansion joint plate are respectively connected to two adjacent first platform beams, and the first expansion joint plate protrudes from the end of the first platform plate; One end of the first telescopic beam is arranged in the first platform beams on both sides of the first expansion joint plate and connected to the first platform beams, and the other end is located outside the first platform beam, and the first telescopic beam is arranged parallel to the first platform beam.

2. The retractable welding platform suitable for high-altitude welding of steel columns according to claim 1 is characterized in that: The second guardrail is arranged opposite to the fifth guardrail, the sixth guardrail is arranged to overlap the first guardrail, and the sixth guardrail and the first guardrail can be moved closer to or away from each other so that the length of the overlapping portion between the sixth guardrail and the first guardrail becomes smaller or larger; The fourth guardrail is arranged in overlap with the third guardrail, and the fourth guardrail and the third guardrail can move relatively closer to or farther away from each other, so that the length of the overlapping portion between the fourth guardrail and the third guardrail becomes smaller or larger.

3. The retractable welding platform suitable for high-altitude welding of steel columns according to claim 1 is characterized in that: The second platform is provided with a second expansion joint plate, a second expansion beam and a second platform beam. At one end of the second platform plate provided with the second groove, a plurality of second platform beams are sequentially arranged along the direction from the fourth guardrail to the sixth guardrail, and the plurality of second platform beams are all arranged parallel to the fourth guardrail. The second expansion joint plate is provided on one side of the second groove, and both sides of the second expansion joint plate are respectively connected to two adjacent second platform beams, and the second expansion joint plate protrudes from the end of the second platform plate; One end of the second telescopic beam is arranged in the second platform beams on both sides of the second expansion joint plate and connected to the second platform beams, and the other end is located outside the second platform beam, and the second telescopic beam is arranged parallel to the second platform beam.

4. The retractable welding platform suitable for high-altitude welding of steel columns according to claim 3 is characterized in that: The second expansion joint plate corresponds to the position of two adjacent first platform beams on one side of the first groove that are not provided with the first expansion joint plate, and the second expansion joint plate is inserted between the two adjacent first platform beams. A limiting member is provided on the opposite surfaces of the two adjacent first platform beams, and a first gap is formed between the limiting member and the first platform plate, and the second expansion joint plate is inserted into the first gap; The first expansion joint plate corresponds to the position of two adjacent second platform beams on one side of the second groove that are not provided with the second expansion joint plate. The first expansion joint plate is inserted between the two adjacent second platform beams, and the limiting members are provided on the opposite surfaces of the two adjacent second platform beams. A second gap is provided between the limiting member and the second platform plate, and the first expansion joint plate is inserted into the second gap.

5. The retractable welding platform suitable for high-altitude welding of steel columns according to claim 4 is characterized in that: The first telescopic beam is located outside the first platform beam and is provided with at least two first through holes, and the second telescopic beam is located outside the second platform beam and is provided with at least two second through holes; The second telescopic beams on both sides of the second expansion joint plate are respectively inserted into two adjacent first platform beams and fixed by fixing members; a plurality of first limiting holes are provided on the two adjacent first platform beams, and the fixing members are sequentially inserted into the first through holes and the first limiting holes on the second telescopic beams to fix the second telescopic beams to the first platform beam; The first telescopic beams on both sides of the first expansion joint plate are respectively inserted into two adjacent second platform beams and fixed by the fixing parts; a plurality of second limiting holes are provided on the two adjacent second platform beams, and the fixing parts are sequentially inserted into the second through holes and the second limiting holes on the first telescopic beam to fix the first telescopic beam and the second platform beam.

6. The retractable welding platform suitable for high-altitude welding of steel columns according to claim 1 is characterized in that: The first platform plate and the second platform plate are both provided with fixed supports on the side away from the guardrail for connecting with the steel columns; the fixed supports include a platform connecting plate, a support plate on the column and a support rib plate, the platform connecting plate is respectively connected to the first platform plate and the second platform plate, the platform connecting plate is detachably connected to the support plate on the column, the support rib plate is fixedly connected to the support plate on the column, and the support rib plate is vertically arranged to the support plate on the column.

7. A construction method for a retractable welding platform suitable for high-altitude welding of steel columns according to any one of claims 1 to 6, characterized in that: The following steps are involved: For steel columns that need to be butt-jointed on site, the support plate on the column and the support rib plate are welded to the column body of the steel column; After the lower column is installed, the welding platform is lifted by a lifting machine, inserted into the steel column from the through-hole structure, and the welding platform is moved downward, so that the platform connecting plate contacts the column support plate on the steel column, and the platform connecting plate is connected to the column support plate through the support connector to be fixed; The welding platform has been installed; Hoist the welding equipment onto the welding platform, hoist it onto the column, adjust the elevation and verticality, and then temporarily fix it with the column positioning lugs; Perform full penetration welding on the joints of the upper and lower columns. After welding is completed and the flaw detection is qualified, remove the welding equipment, loosen the support connector, lift the welding platform by the lifting machinery, and disassemble the welding platform.

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