CN114000662A - Skylight structure and seamless welding method for aluminum-magnesium-manganese plate - Google Patents

Abstract

The invention discloses a skylight structure and a seamless welding method for aluminum-magnesium-manganese plates, wherein the skylight structure comprises a standing-seam-bordered roof and a skylight, the skylight comprises a skylight frame and a flashing plate, the skylight frame comprises supporting columns and surrounding columns, the lower ends of the supporting columns are fixedly arranged on secondary purlins of the roof, the surrounding columns are fixedly arranged on the upper parts of the supporting columns, 4 supporting columns are arranged, two ends of one surrounding column are respectively and fixedly arranged on two adjacent supporting columns, so that a rectangular mounting frame is formed on the upper parts of the surrounding columns, the flashing plate is a bent metal plate, the upper end of the flashing plate is connected with the mounting frame, and the lower end of the flashing plate is welded with the roof plate; the invention ensures that the connecting position of the skylight and the roof panel is in a watertight state by welding and sealing the flashing plate and the roof panel, thereby reducing the leakage probability.

Description

Skylight structure and seamless welding method for aluminum-magnesium-manganese plate

Technical Field

The invention relates to the technical field of roof construction, in particular to a skylight structure and a seamless welding method for an aluminum-magnesium-manganese plate.

Background

With the rapid development of the economy of China, various domestic traffic platforms, competition stadiums and continuous construction, the application of the standing-seam crimping roof is more and more extensive, but the problem of water leakage of the standing-seam crimping roof still puzzles experts and related personnel at home and abroad.

The existing nonlinear upright-lockstitching roof only adopts a flashing plate at the position of a side-edge closing-up position of a skylight, the flashing plate and the roof are fixed in a screw connection mode, and screws can easily damage a waterproof layer of the roof, so that the leakage phenomenon still easily occurs.

In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.

Disclosure of Invention

In order to solve the technical defects, the technical scheme adopted by the invention is that the skylight edging structure comprises an upright serging roof and a skylight, wherein the upright serging roof comprises a roof secondary purline, a metal roof bottom plate, a steam-isolating layer, a heat-insulating layer, a waterproof and steam-permeable film, a waterproof coil layer and a roof panel which are sequentially arranged from bottom to top; a fixed support is fixedly arranged on the metal roof bottom plate, the fixed support comprises a bottom plate and a vertical plate, the vertical plate is vertically arranged on the bottom plate, a clamping head is arranged at the end part, far away from the bottom plate, of the vertical plate, the wave crest section of the top plate of the roof panel is buckled on the clamping head, the bottom plate is arranged on the waterproof coiled material layer, and the end part of the clamping head penetrates through the heat insulation layer and the waterproof vapor-permeable membrane and is buckled with the roof panel; the top plate wave peak section extends along the vertical lock edge roof from high to low in an inclined mode;

the skylight includes skylight frame and flashing board, skylight frame includes the support column and encloses and establishes the post, the support column lower extreme is fixed to be set up on the roofing time purlin, enclose to establish that the post is fixed to be set up the upper portion of support column, the support column is provided with 4, and one enclose to establish the both ends of post and fix respectively and set up adjacent two on the support column, with enclose the installation frame that the upper portion of establishing the post formed the rectangle, the flashing board sets up to the metal sheet of buckling, the upper end of flashing board with installation frame connection, the lower extreme with the roof boarding welding.

The preferred, on the lower limb in skylight and both sides edge, the flashing board is provided with first rigging board and second rigging board, first rigging board with the second rigging board sets up perpendicularly and forms the cross section for the L type the flashing board, first rigging board laminating the support column sets up, just first rigging board with enclose the position department of establishing overlapping between the post through connecting screw fixed connection, the second rigging board with the roof boarding laminating sets up, and will the edge of second rigging board with roof boarding welded fastening.

The preferred, on the upper edge in skylight, the flashing board is provided with third plywood, first deflector and second deflector, the third plywood passes through first deflector with the second deflector is connected, the laminating of third plywood the support column sets up, just the third plywood with enclose the position department of establishing overlapping between the post through connecting screw fixed connection, first deflector with roof boarding parallel arrangement, second deflector one end with roof boarding welded fastening, the other end to the slope of second deflector extend and with second deflector fixed connection.

Preferably, on the upper edge of the skylight, a top plate wave crest section of the roof panel is welded and fixed with the flashing board, and the height of the top plate wave crest section of the roof panel is smaller than the distance between the first guide plate and the roof panel.

Preferably, on the lower edge of the skylight, the roof panel is not provided with a roof panel peak section within the coverage range of the second attaching plate.

Preferably, the second attaching plates on the edges of the two sides of the skylight extend upwards, the part of the second attaching plate extending upwards is connected with the first guide plate through a third guide plate, and the third guide plate is perpendicular to the second attaching plate.

Preferably, a window frame is arranged on the installation frame, edge folding plates are arranged on the installation frame and the window frame in an installation mode, the edge folding plates cover the installation frame and a gap between the window frame, and the first attaching plate and the connecting screw which is arranged in the enclosing mode and connected with the column are arranged in the coverage range of the edge folding plates.

Preferably, the waterproof roll material layer edge and the flashing plate are provided with a distance of more than 50 mm.

Preferably, a soaked asbestos cloth or an aluminum heat insulation plate is arranged under the flashing plate, and the soaked asbestos cloth or the aluminum heat insulation plate is arranged between the heat insulation layer and the roof panel.

Preferably, a welding method of the skylight edging structure includes the steps of:

s1, polishing finish paint; polishing the aluminum alloy finish at the welding part before welding;

s2, preparing before welding; paving and soaking an asbestos cloth aluminum heat insulation plate in the welding area;

s3, carrying a welding handle;

s4, welding;

s41, preheating for 3-5 seconds at the position where the weldment starts after the electric arc is ignited, and adding an aluminum welding rod after a molten pool is formed;

s42, when the molten pool changes and becomes large, the welding seam becomes wide or concave, the welding speed is increased or the welding current is reduced again; when the fusion of the molten pool is not good, the welding speed is reduced or the welding current is increased;

and S5, arc closing.

Compared with the prior art, the invention has the beneficial effects that: the invention ensures that the connecting position of the skylight and the roof panel is in a watertight state by welding and sealing the flashing plate and the roof panel, thereby reducing the leakage probability.

Drawings

FIG. 1 is a front sectional view of the skylight edging structure;

FIG. 2 is a side sectional view of the skylight edging structure;

FIG. 3 is a structural view of a flashing at the side edge of the skylight;

fig. 4 is a structural view of the flashing at the upper edge of the skylight.

The figures in the drawings represent:

1-roofing secondary purline; 2-metal roof bottom plate; 3, insulating layer; 4-waterproof roll layer; 5-roof boarding; 6, fixing a support; 7-a support column; 8-enclosing a column; 9-a window frame; 10-glass; 11-edge folding plate; 12-a first attachment panel; 13-a second attachment panel; 14-a third veneer sheet; 15-a first guide plate; 16-a second guide plate; 17-third guide plate.

Detailed Description

The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

Example one

The vertical serging roof comprises a roof secondary purline 1, a metal roof bottom plate 2, a steam-isolating layer, a heat-insulating layer 3, a waterproof steam-permeable membrane, a waterproof coil material layer 4 and a roof panel 5 which are sequentially arranged from bottom to top; fixing support 6 is fixed to be set up on metal roofing bottom plate 2, fixing support 6 includes bottom plate and riser, the riser sets up perpendicularly on the bottom plate, the riser is kept away from the tip of bottom plate is provided with the dop, roof boarding 5's roof crest section lock joint is in on the dop, realize roof boarding 5 is fixed at the lock joint of roofing, the bottom plate sets up on waterproof coil stock layer 4, the dop tip passes heat preservation 3 with waterproof ventilative membrane and with roof boarding 5 lock joint.

The top plate wave peak section extends along the vertical lock edge roof from high to low in an inclined mode.

Generally, a Z-shaped keel is arranged in the heat insulation layer 3, a plurality of fixing supports 6 are arranged on the Z-shaped keel at equal intervals, and the Z-shaped keel is fixedly arranged on the metal roof bottom plate 2 through a plurality of adapter pieces, so that the fixing supports 6 are fixedly arranged on the roof panel 5.

Z type fossil fragments include hypoplastron, medium plate and upper plate, the both ends of medium plate are fixed connection respectively the hypoplastron with the upper plate, hypoplastron fixed connection be in on the nearly style of calligraphy adaptor, the medium plate the hypoplastron with nearly style of calligraphy adaptor all sets up in heat preservation 3, the upper plate sets up heat preservation 3 with between the waterproof ventilative membrane.

The waterproof breathable film is characterized in that a connecting hole is formed in the bottom plate, the connecting hole corresponds to the fixing hole, the connecting hole and the fixing hole are in one-to-one correspondence, the connecting hole is a through hole, the fixing hole is a threaded hole, and a self-tapping screw passes through the connecting hole and penetrates through the waterproof coiled material layer 4 and the waterproof breathable film and is in threaded connection with the fixing hole.

Preferably, the self-tapping screw is sleeved with a waterproof rubber ring, the waterproof rubber ring is arranged on the bottom plate, the bottom plate is close to one side of the vertical plate, and therefore waterproof sealing of the connecting hole is achieved.

A sealing rib is arranged on one side, away from the vertical plate, of the bottom plate, the sealing rib is arranged in a closed ring shape, the connecting holes are all formed in the sealing rib in the ring shape, and the waterproof coil layer 4 is pressed and deformed through the bottom plate, so that a water-closing structure is formed; through waterproof rubber ring with the setting of sealed muscle can improve the watertight effect of both ends mouth about the connecting hole avoids 4 upper portion ponding in waterproof roll material layer are not followed the base with self-tapping screw department infiltrates waterproof roll material layer 4 lower part.

Preferably, sealant is coated between the bottom plate and the waterproof and breathable film and between the self-tapping screw and the bottom plate, so that the watertight effect of the upper port and the lower port of the connecting hole is further improved.

The inverted V-shaped adaptor comprises a top plate, supporting plates and fixing plates, wherein the two supporting plates are vertically arranged on two sides of the top plate, the two fixing plates are respectively and fixedly arranged at the bottom of the supporting plates and are arranged in parallel, the top plate is fixedly connected with the lower plate, and the fixing plates are fixedly connected with the metal roof bottom plate 2.

The cross section of the metal roof bottom plate 2 comprises bottom plate wave crest segments and bottom plate wave trough segments which are alternately arranged, the lower side of each bottom plate wave trough segment is tightly attached to the upper side of the corresponding roof secondary purline 1, the lower side of each bottom plate wave trough segment is connected with the corresponding roof secondary purline 1 through a first connecting piece, the upper side of each bottom plate wave trough segment is tightly attached to the lower side of the corresponding fixed plate, and the upper side of each bottom plate wave trough segment is connected with the corresponding fixed plate through a second connecting piece.

Through setting up a few style of calligraphy adapters are realized metal roofing bottom plate 2 with the connection of Z type fossil fragments reduces metal roofing bottom plate 2 with area of contact between the Z type fossil fragments reduces heat conduction efficiency, improves the heat preservation effect of heat preservation 3.

The first connecting piece corresponds the horizontal interval in position setting of bottom plate wave crest section, the second connecting piece corresponds the horizontal interval in position setting of bottom plate wave crest section, first connecting piece with the second connecting piece all adopts self-tapping screw, first connecting piece is in metal roofing bottom plate 2's junction adopts resistant time to glue sealedly, the second connecting piece is two along horizontal interval that sets up the bottom plate wave crest section.

Generally, the roof panel 5 is an aluminum-magnesium-manganese panel, and the metal roof bottom plate 2 is a 0.6mm thick pressed bottom plate; the vapor barrier adopts a moisture-proof vapor barrier film, and the transverse and longitudinal lap widths of the moisture-proof vapor barrier film are both 150 mm; the heat preservation 3 adopts the superfine glass cotton of 80mm thick, waterproof ventilative membrane adopts the waterproof ventilated membrane of 0.49mm thick polyethylene, the horizontal and fore-and-aft overlap width of waterproof ventilative membrane is 150mm, waterproof roll material layer 4 adopts 4+3 thick SBS modified pitch self-adhesive waterproofing membrane.

Example two

As shown in fig. 1 and 2, fig. 1 is a front sectional view of the skylight edging structure; fig. 2 is a side sectional view of the skylight edging structure.

The skylight includes skylight frame and flashing board, skylight frame includes support column 7 and encloses and establishes post 8, support column 7 with enclose and establish post 8 and all adopt galvanized steel square pipe, support column 7 lower extreme is fixed to be set up on roofing time purlin 1, enclose and establish post 8 fixed setting on the upper portion of support column 7, support column 7 is provided with 4, and one enclose the both ends of establishing post 8 and respectively fix the setting on two adjacent support columns 7, thereby enclose the installation frame that forms the rectangle on the upper portion of establishing post 8, be provided with thermal-insulated aluminum alloy daylighting window frame 9 on the installation frame, be provided with TP6+12A + 6+1.14PVB + TP6 cavity doubling Low-E glass 10 on the thermal-insulated aluminum alloy daylighting window frame, the flashing board sets up to the aluminium alloy plate of buckling, the upper end of flashing board with enclose and establish post 8 and be connected, the lower extreme with roof boarding 5 welds, so as to ensure that the connecting position of the skylight and the roof panel 5 is in a watertight state and reduce the leakage probability.

As shown in fig. 3, fig. 3 is a structural view of the flashing at the side edge of the skylight; on the lower limb in skylight and both sides edge, the flashing board is provided with first rigging board 12 and second rigging board 13, first rigging board 12 with second rigging board 13 sets up perpendicularly and forms the cross section for the L type the flashing board, first rigging board 12 laminating support column 7 sets up, just first rigging board 12 with enclose the position department of establishing overlapping between the post 8 through connecting screw fixed connection, second rigging board 13 with 5 laminating settings of roof boarding, and will the edge of second rigging board 13 with 5 welded fastening of roof boarding, thereby the lower limb in skylight and both sides edge form right-angled guiding gutter, avoid the rainwater to be in the lower limb in skylight and the collection of both sides edge.

FIG. 4 is a structural view of the flashing at the upper edge of the skylight, as shown in FIG. 4; on the upper edge in skylight, flashing board is provided with third plywood 14, first deflector 15 and second deflector 16, third plywood 14 passes through first deflector 15 with second deflector 16 is connected, the laminating of third plywood 14 support column 7 sets up, just third plywood 14 with enclose the position department of establishing overlapping between the post 8 through connecting screw fixed connection, first deflector 15 with 5 parallel arrangement of roof boarding, 16 one end of second deflector with 5 welded fastening of roof boarding, the other end to 16 slopes of second deflector extend and with 16 fixed connection of second deflector, thereby the top edge in skylight forms stair structure, thereby guarantees ponding slope on the skylight is used up along flashing board water conservancy diversion is to both sides landing.

Preferably, on the upper edge of skylight, roof panel 5's roof crest section with flashing board welded fastening, roof panel 5's roof crest section height is less than first deflector 15 with the distance between the roof panel 5 to guarantee that ponding between the adjacent roof crest section can follow second deflector 16 water conservancy diversion extremely third plywood 14 with the right angle region of first deflector 15, and follow third plywood 14 with the right angle region of first deflector 15 is to the both sides water conservancy diversion, avoids the upper edge ponding of skylight.

On the lower limb in skylight, roof boarding 5 is in second attaching plate 13's coverage does not set up the roof plate wave crest section, avoids influencing second attaching plate 13 with roof boarding 5 laminating welding, simultaneously the lower limb in skylight forms the cavity that does not contain the roof plate wave crest section, and the ponding of being convenient for is in gathering of skylight lower limb and following under self action of gravity roof boarding 5 slope landing.

Generally, the second attaching plates 13 on the two side edges of the skylight extend upwards, the part of the second attaching plates 13 extending upwards is connected with the first guide plate 15 through a third guide plate 17, and the third guide plate 17 is perpendicular to the second attaching plates 13, so as to ensure the overall sealing effect of the flashing plate.

The utility model discloses a solar energy collector, including installation frame, thermal-insulated aluminum alloy daylighting window frame, installation frame with installation is provided with receipts sideboard 1l on the thermal-insulated aluminum alloy daylighting window frame, receive sideboard 11 to cover the installation frame with on the clearance between the thermal-insulated aluminum alloy daylighting window frame, improve the installation frame with sealed effect between the thermal-insulated aluminum alloy daylighting window frame, generally, first rigging board 12 with enclose and establish the post 8 and connect the connecting screw setting is in receive sideboard 11's coverage.

EXAMPLE III

The welding of the flashing plate and the roof panel 5 adopts consumable electrode argon arc welding, and the construction method for welding the flashing plate and the roof panel 5 comprises the following steps:

s1, polishing finish paint

And S11, before welding, polishing the aluminum alloy finish paint at the welding part by using an angle grinder to carry out welding operation.

S12, before the angle grinder grinds the aluminum alloy finish, carefully checking whether the grinding wheel has cracks or other damages, and immediately replacing the grinding wheel if the grinding wheel has the damages.

S13, when the aluminum alloy surface is polished, the temperature of splashed sparks is high, therefore, the structural layer of the polishing area is covered with and soaked with asbestos cloth or an aluminum heat insulation board, and simultaneously, 2-5 barrels of water and a plurality of fire extinguishers are prepared before polishing.

And S14, arranging a fire baffle in front of the angle grinder to prevent sparks from splashing during grinding.

S2, preparation before welding

And S21, reading the welding process card, and knowing the material of the welded workpiece, the required equipment, the required tool and the relevant process parameters.

S22, checking whether the welding machine, the gas supply system, the water supply system and the grounding are in good condition; the operators are on duty for warranty and the safety education and safety measures are in place before the operation.

And S23, before welding the upper opening closing of the skylight, covering the welding area with a soaked asbestos cloth aluminum heat insulation plate.

S24, when welding the closing-in, 2-5 barrels of water and a plurality of fire extinguishers are prepared in a welding area.

S3, welding

S31, the crank slightly presses the welding nozzle on the welding seam, and the arm largely shakes to weld. The welding nozzle is pressed on the welding seam, and the welding handle is very stable in the operation process, so that the welding seam is well protected, the quality is good, the appearance is formed very beautifully, the product percent of pass is high, the overhead welding is very convenient, and the very beautiful appearance color can be obtained when the stainless steel is welded. The disadvantage is that it is difficult to learn, and because the arm shaking amplitude is large, it is impossible to weld on the position with obstacles.

S32, the mop is that the welding tip is slightly leaned or not leaned on the welding seam, the little finger or the ring finger of the right hand is leaned or not leaned on the workpiece, the arm swings slightly, and the welding handle is dragged for welding. Its advantages are easy mastering it, high adaptability and high shaping and quality, and welding stainless steel.

S4, welding

And S41, preheating the workpiece at the beginning of the weldment for 3-5 seconds after the electric arc is ignited, and adding an aluminum welding rod after a molten pool is formed. During welding, the welding rod welding gun has proper angle and the welding rod is fed uniformly. The welding gun moves forward stably, swings left and right slightly slowly at two sides, and is faster in the middle.

S42, closely paying attention to the change of the molten pool, and when the molten pool becomes large, the welding seam becomes wide or the welding current is regulated to be small again when the welding seam becomes wide or is concave. When the fusion of the molten pool is poor and the wire feeding is not stable, the welding speed is reduced or the welding current is increased, if the attention of the backing weld eye is focused on the blunt edges at the two sides of the groove, the residual light of the eye corner is on the reverse side of the seam, and the rest of the high change is noticed.

S5, arc closing

S51, if the straight received arc is easy to generate shrinkage cavity, if the welding gun with the arc initiator needs to intermittently close the arc or adjust to proper arc closing current to slowly close the arc, if no arc initiator welding machine exists, the arc is slowly guided to one side of the groove without generating shrinkage cavity, and if the shrinkage cavity is generated, welding can be carried out after the shrinkage cavity is polished completely.

S52, if the arc is closed at the joint, the joint to be connected is ground into an oblique opening, the joint is welded forwards for 10-20mm after being fully melted, and then the arc is closed slowly, so that shrinkage cavities cannot be generated. In production, the joint is not polished into an oblique opening, and the welding time at the joint is directly prolonged, which is a bad habit, so that the joint is easy to indent, the joint is not fused, the reverse side is disjointed, the forming appearance is attractive, and if the joint is made of high alloy materials, cracks are easy to generate.

And S53, checking the appearance after welding to be qualified, and turning off the power supply and the gas when people walk.

And S54, after welding, the welding personnel should check whether the structural layer in the welding area is burned or ignited, and if abnormal conditions exist, the abnormal conditions are immediately reflected to the management personnel.

Gas shielding must be reliable when welding aluminum and its alloys by metal argon arc welding (MIG). The purity of argon gas is required to be high (> 99.8%), the welding wire and the groove welding wire are required to be cleaned carefully, in order to prevent the surface of the welding wire from reforming an oxide film and adsorbing hydrogen, the cleaned welding wire needs to be used within 8-12 h, and the cleaned welding wire can be placed in an argon-filled sealed package for storage and standby. The welded parent metal is generally cleaned by a mechanical method, and generally no more than 3-4 days and nights are required after cleaning.

Jet transition

The most common method for MIG welding of aluminium and its alloys is jet transition, where the diameter of the welding wire is chosen to be 2.4mm depending on the panel thickness, and the critical current is 220A accordingly. During the jet flow transition welding, a constant voltage power supply is adopted to be matched with the constant-speed wire feeding, and the stable jet flow transition is maintained by utilizing the self regulation function of the electric arc of the welding power supply.

Speed of welding

The welding speed of a single pass is the relative movement speed of the welding torch along the direction of the joint centerline. When the welding speed is reduced, the deposition amount of the filler metal per unit length increases, and the volume of the molten pool increases. The welding speed is too high, the heat quantity transferred to the base metal by the electric arc in unit length is obviously reduced, the melting speed of the base metal is reduced, and the undercut is possibly generated when the welding speed is too high.

Extension of welding wire

The longer the extension of the wire, the greater the resistance heat of the wire and the faster the melting rate of the wire. The extension length of the welding wire is generally 13 mm-25 mm. The arc voltage is reduced, deposited metal is excessive, the welding seam is poor in forming, the fusion depth is small, and the arc is unstable due to the fact that the length of the welding wire is too long; the welding wire has too short extension length, the electric arc is easy to burn the contact tip, and the metal splashes and is easy to plug the nozzle.

Welding wire position

The angle and position of the wire axis relative to the centerline of the weld (called the datum line) affects the shape and penetration of the weld bead. When other conditions are not changed and the welding wire is changed from a vertical position to a backward welding method (the welding wire points to a welding seam), the penetration is increased, the welding bead is narrowed, the residual height is increased, the electric arc is stable, and the splashing is small.

Welding position

The jet flow transition can be suitable for flat welding, vertical welding and overhead welding positions. During flat welding, the inclination of the workpiece relative to the horizontal has an effect on weld formation, penetration and welding speed. If downhill welding is adopted, the weld reinforcement height is reduced, the penetration is reduced, the welding speed can be improved, and the welding of sheet metal is facilitated; if the uphill welding is adopted, the gravity causes the welded metal to flow backwards, the penetration and the extra height are increased, and the fusion width is reduced. Short circuit transition welding can be used for flat welding and all-position welding of sheet materials.

Flow of gas

The shielding gas can be ejected from the nozzle in two situations, a thicker laminar flow or a thinner laminar flow that is close to turbulent flow. The former has a larger effective protection range and better protection effect. Therefore, in order to obtain laminar protective airflow and enhance the protective effect, a welding gun with a reasonable structural design and a proper gas flow rate are required, and turbulent flow can be caused by too large or too small gas flow rate. Because the protection requirement of the argon arc welding of the consumable electrode on a molten pool is higher, if the protection is poor, the surface of a welding seam is wrinkled, and the aperture and the gas flow of the nozzle are correspondingly increased compared with the argon arc welding of the tungsten electrode. The aperture of the nozzle is about 20mm, and the gas flow is 30-601/min.

The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. The skylight edging structure is characterized by comprising an upright-serging roof and a skylight, wherein the upright-serging roof comprises a roof secondary purline, a metal roof bottom plate, a steam barrier layer, a heat insulation layer, a waterproof and breathable film, a waterproof roll material layer and a roof panel which are sequentially arranged from bottom to top; a fixed support is fixedly arranged on the metal roof bottom plate, the fixed support comprises a bottom plate and a vertical plate, the vertical plate is vertically arranged on the bottom plate, a clamping head is arranged at the end part, far away from the bottom plate, of the vertical plate, the wave crest section of the top plate of the roof panel is buckled on the clamping head, the bottom plate is arranged on the waterproof coiled material layer, and the end part of the clamping head penetrates through the heat insulation layer and the waterproof vapor-permeable membrane and is buckled with the roof panel; the top plate wave peak section extends along the vertical lock edge roof from high to low in an inclined mode;

the skylight includes skylight frame and flashing board, skylight frame includes the support column and encloses and establishes the post, the support column lower extreme is fixed to be set up on the roofing time purlin, enclose to establish that the post is fixed to be set up the upper portion of support column, the support column is provided with 4, and one enclose to establish the both ends of post and fix respectively and set up adjacent two on the support column, with enclose the installation frame that the upper portion of establishing the post formed the rectangle, the flashing board sets up to the metal sheet of buckling, the upper end of flashing board with installation frame connection, the lower extreme with the roof boarding welding.

2. The skylight edging structure according to claim 1, wherein the flashing plate is provided with a first attaching plate and a second attaching plate on the lower edge and the two side edges of the skylight, the first attaching plate and the second attaching plate are vertically arranged to form the flashing plate with an L-shaped cross section, the first attaching plate is attached to the supporting column, the first attaching plate and the surrounding columns are fixedly connected through connecting screws at the overlapped positions, and the second attaching plate is attached to the roof panel and fixes the edges of the second attaching plate and the roof panel in a welding manner.

3. The skylight edging structure according to claim 2, wherein the flashing plate is provided with a third laminated plate, a first guide plate and a second guide plate on the upper edge of the skylight, the third laminated plate is connected with the second guide plate through the first guide plate, the third laminated plate is attached to the supporting column, the third laminated plate and the surrounding column are fixedly connected through a connecting screw at the overlapped position, the first guide plate and the roof panel are arranged in parallel, one end of the second guide plate is welded and fixed with the roof panel, and the other end of the second guide plate extends obliquely towards the second guide plate and is fixedly connected with the second guide plate.

4. A skylight edging structure according to claim 3, characterized in that on the upper edge of the skylight, the roof plate crest segment of the roof plate is welded and fixed to the flashing plate, and the roof plate crest segment of the roof plate has a height smaller than the distance between the first guide plate and the roof plate.

5. The skylight edging structure of claim 3, wherein on the lower edge of the skylight, the roof panel is free of roof panel corrugations within the coverage of the second abutting panel.

6. The window edging structure of claim 3, wherein the second abutting plates of the two side edges of the window extend upward, and the upward extending portions of the second abutting plates are connected to the first guide plate through third guide plates, and the third guide plates are perpendicular to the second abutting plates.

7. The skylight edging structure of claim 3, wherein a window frame is disposed on the mounting frame, edging plates are disposed on the mounting frame and the window frame, the edging plates cover a gap between the mounting frame and the window frame, and the first attachment plate and the connecting screw connected to the enclosure post are disposed within a coverage area of the edging plates.

8. The roof edging structure according to claim 3, wherein the waterproof roll layer edge is provided with a distance of 50mm or more from the flashing.

9. The skylight edging structure of claim 3, wherein a wetted asbestos cloth or an aluminum heat-insulating plate is arranged just below the flashing, and the wetted asbestos cloth or the aluminum heat-insulating plate is arranged between the heat-insulating layer and the roof panel.

10. An aluminum magnesium manganese plate seamless welding method for welding the skylight edging structure and the roof plate according to any one of claims 1 to 9, wherein the roof plate is made of aluminum magnesium manganese plate, and the method is characterized by comprising the following steps:

s1, polishing finish paint; polishing the aluminum alloy finish at the welding part before welding;

s2, preparing before welding; paving and soaking an asbestos cloth aluminum heat insulation plate in the welding area;

s3, carrying a welding handle;

s4, welding;

s41, preheating for 3-5 seconds at the position where the weldment starts after the electric arc is ignited, and adding an aluminum welding rod after a molten pool is formed;

s42, when the molten pool changes and becomes large, the welding seam becomes wide or concave, the welding speed is increased or the welding current is reduced again; when the fusion of the molten pool is not good, the welding speed is reduced or the welding current is increased;

and S5, arc closing.

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