Large main building steel shed flat roof light panel connecting device

Abstract

The application discloses a large-scale main building steel shed flat-lighting plate connecting device, which is used for sealing and connecting transversely adjacent flat-lighting plates with consistent size and shape, so that the flat-lighting plate and the connecting device have the property of standardized connection, and the flat-lighting plate as a non-standard lighting plate can fully play a role in making up for the structural deficiency of the standard lighting plate, that is, greatly improving construction efficiency; since the flat-lighting plate has relatively unified shape and size, the connecting piece with reliable sealing property can be designed, so that the sealing leakage prevention and the connecting strength can be guaranteed; the application can guarantee that the whole flat-lighting plate has good integrity after construction, and has good appearance and better aesthetics; compared with the prior art, the connecting strength is higher, and the sealing property is also higher, so that the service life of the whole flat-lighting plate is prolonged, and the maintenance frequency and cost are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building steel structure and enclosure construction, and particularly relates to a large main building steel shed flat mouth light plate connecting device. BACKGROUND

[0002] The large main structure steel shed of a stadium and the like is usually designed as a non-closed curved surface structure, and in order to achieve the use requirement of large span, a tubular truss or a net rack structure is generally used. After the tubular truss or the net rack main structure is installed, a purlin needs to be installed, and the function of the purlin is to serve as a bearing support of the shed enclosure (light plate or metal profiled plate). In the prior art, the purlin is usually arranged in a square grid shape, and the structural sizes of different structure main bodies or even the same structure main body square grid are not the same. If the enclosure is a light plate, different light plates need to be customized according to different square grid sizes, which results in a large number of light plate specifications, low efficiency of manufacturing and installing the light plate, and a large number of joints in the square grid arrangement mode, and the light plate has poor integrity and is prone to air leakage and water leakage.

[0003] In practice, especially for the transverse connection of the flat mouth light plate (i.e. the side connected by the transversely connected light plates is a flat plate), it is a great technical problem to realize sealing and not exerting excessive stress on the light plate. At the same time, in the prior art, it is difficult to achieve long-term use without water leakage at the connection of the flat mouth light plate.

[0004] Therefore, it is necessary to improve the flat mouth light plate connecting structure in the prior art, so as to realize standardized construction of the flat mouth light plate, improve the efficiency of the construction process, save the construction cost, achieve the purpose of long-term leakage prevention, and prolong the service life of the flat mouth light plate system. SUMMARY

[0005] Therefore, it is necessary to improve the flat mouth light plate connecting structure in the prior art, so as to realize standardized construction of the flat mouth light plate, improve the efficiency of the construction process, save the construction cost, achieve the purpose of long-term leakage prevention, and prolong the service life of the flat mouth light plate system.

[0006] The large main building steel shed flat mouth light plate connecting device of the present application comprises a non-standard base and a non-standard pressing piece, the non-standard base is fixedly arranged and fixedly connected with the non-standard pressing piece upward to press and seal and fix two flat mouth light plates adjacent upward.

[0007] Further, the non-standard base is a T-shaped base with inverted T-shaped cross section, the wings of the T-shaped base are fixed to the additional purlins, and the flat roof daylighting panel is supported downward on the wings of the T-shaped base; the non-standard compression piece is fixed and connected downward on the web of the T-shaped base across two adjacent non-standard daylighting panels, and the two ends of the non-standard compression piece are respectively formed with downward bending parts, and the lower ends of the two edge parts are respectively provided with non-standard compression piece sealing strips in close contact with the flat roof daylighting panel.

[0008] Further, the non-standard connecting device further comprises a C-shaped right-angle non-standard buckle strip for buckling on the inner side end of the flat roof daylighting panel through a sealing gasket, the C-shaped right-angle non-standard buckle strip is integrally formed with a pressure bearing rib upwardly extending near the web thereof, and the non-standard compression piece is integrally formed with a pressure applying rib downwardly extending, and after the non-standard compression piece is fixed and connected to the T-shaped base, the pressure applying rib tightly presses the pressure bearing rib and applies a transversely outward force to the pressure bearing rib.

[0009] Further, the web of the T-shaped base is tightly pressed with the lower end of the web of the C-shaped right-angle non-standard buckle strip and applies a transversely outward force.

[0010] Further, the lower ends of the two bending parts of the non-standard compression piece are provided with non-standard compression piece sealing grooves in longitudinal direction, the non-standard compression piece sealing grooves are necked opening grooves, the non-standard compression piece sealing strip is made of elastic material, the upper part of the non-standard compression piece sealing strip is provided with an expansion head and is embedded in the non-standard sealing groove through the expansion head, and the lower part of the non-standard compression piece sealing strip is a sealing lip.

[0011] Further, the sealing lip comprises an inclined blocking strip extending obliquely downward to the outside, and a convex sealing part with downward protrusion located inside the inclined blocking strip, the convex sealing part has a downward arc surface in elastic contact with the panel surface of the flat roof daylighting panel.

[0012] Further, the upper part of the inclined blocking strip is integrally formed with a cover strip extending upward to close the outside of the blocking bend, and the convex sealing part is a hollow structure.

[0013] Further, the two ends of the wings of the T-shaped base are respectively formed with T-shaped base bending parts extending upward, the upper end of the T-shaped base bending part is provided with a T-shaped base sealing groove in longitudinal direction, the T-shaped base sealing groove is a necked opening groove, the necked opening groove is provided with a T-shaped base sealing strip, and the T-shaped base sealing strip upwardly holds the corresponding flat roof daylighting panel.

[0014] Further, the pressure bearing rib is integrally formed along the length of the C-shaped right-angle non-standard buckle strip, and the pressure applying rib is integrally formed along the length of the non-standard compression piece, the pressure applying rib is located inside the pressure bearing rib, and the side of the pressure bearing rib close to the pressure applying rib is processed into an inclined surface, and the pressure applying rib is also processed with an inclined surface corresponding to the inclined surface of the pressure bearing rib.

[0015] Further, the web of the T-shaped base expands to both lateral sides, and the surfaces of the two sides form bevels which abut the positions of the web bottom corners of the corresponding C-shaped right-angle non-standard buckling strips.

[0016] The large main building steel shed flat light panel connecting device has the advantages that the device is used for sealing and connecting the flat light panels which are adjacent in transverse direction and have consistent size and shape, so that the flat light panels and the connecting device have the property of standard connection, and the flat light panels as non-standard light panels can fully play their role in supplementing the structure of the standard light panels, that is, greatly improve the construction efficiency; the flat light panels have consistent shape and size, and can be designed into connecting pieces with reliable sealing property, so that the sealing and leakage prevention and the connection strength can be guaranteed; the device can guarantee good integrity of the light panels after construction, and has good appearance and better aesthetics, and has higher connection strength and sealing property compared with the prior art, so that the use period of the light panel blocks is prolonged, and the maintenance frequency and cost are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described below in combination with the drawings and examples.

[0018] Figure 1 is a plan view of the shed steel structure of the application;

[0019] Figure 2 is an arrangement drawing of the additional purlin of the application (installed in the shed steel structure during construction); Figure 1

[0020] Figure 3 is a schematic diagram of the light panel arrangement of the application (installed in the additional purlin during construction); Figure 2

[0021] Figure 4 is a three-dimensional view of the connection of the standard light panel and the non-standard light panel of the application;

[0022] Figure 5 is a cross-sectional view of the connection of the standard light panel (meridional section of the shed steel structure);

[0023] Figure 6 is a cross-sectional view of the standard light panel (meridional section of the shed steel structure);

[0024] Figure 7 is a cross-sectional view of the I-shaped base (meridional section of the shed steel structure);

[0025] Figure 8 is a cross-sectional view of the standard pressing piece (meridional section of the shed steel structure);

[0026] Figure 9 ​​It is a cross-sectional view of a standard sealing strip (meridional direction of the steel shed structure);

[0027] Figure 10 It is a cross-sectional view of a non-standard lighting panel connection (meridional cross-section of the steel shed structure);

[0028] Figure 11 It is a cross-sectional view of a T-shaped base (meridional direction of the steel shed structure);

[0029] Figure 12 It is a cross-sectional view of a non-standard pressing piece (meridional direction of the steel shed structure);

[0030] Figure 13 It is a cross-sectional view of a C-shaped right-angle non-standard buckle strip and sealing gasket cooperation (meridional direction of the steel shed structure);

[0031] Figure 14 It is a perspective view of the lighting panel arrangement in the weft direction (layered and stacked);

[0032] Figure 15 It is a longitudinal cross-sectional view of the lighting panel arrangement in the weft direction (weft direction of the steel shed structure);

[0033] Figure 16 It is a longitudinal cross-sectional view of the first-level waterproof structure (weft direction of the steel shed structure). DETAILED DESCRIPTION

[0034] As shown in the drawings: the large main building steel shed flat mouth lighting panel connecting device 7 of the application comprises a non-standard base 701 and a non-standard pressing piece 702, the non-standard base 701 is fixedly arranged, generally fixedly arranged on the steel shed, and can be arranged through additionally arranged purline, which is not described here; the non-standard base 701 is fixedly connected with the non-standard pressing piece 702 upward to press and seal and fix two adjacent flat mouth lighting panels in the meridional direction;

[0035] The connecting device of the embodiment is used for connecting the flat mouth lighting panels adjacent in the transverse direction when in use, and the flat mouth lighting panels have consistency in shape and size; that is, the shape and size of each flat mouth lighting panel are consistent, which is beneficial to improve the construction efficiency and make the connecting device also have consistency;

[0036] Since the additional purline support is arranged along the longitudinal direction, the flat mouth lighting panel refers to the length that can be achieved by the material and manufacturing process in the length (along the longitudinal direction of the roof), and in practice, the length of the two sides of the structure of the standard lighting panel (such as a dome) is generally not parallel, the width can generally ensure the construction, and the support strength is ensured.

[0037] In this embodiment, the structure of the application is illustrated by the construction process of the application and the flat-lighting panel used on the non-closed curved surface (or spherical surface) steel canopy of large main building. In order to adapt to the curved surface structure during construction, the flat-lighting panel and the connecting device of the application will be used. In order to distinguish the standard lighting panel, the flat-lighting panel is called non-standard lighting panel below. It should be noted that the aforementioned transverse direction is the meridian direction of the non-closed curved surface (or spherical surface) steel canopy, and the longitudinal direction is the latitude direction. Herein, no further description is given.

[0038] The entire system is constructed by the following method, including the following steps:

[0039] a. Obtain the arrangement model of the lighting panel:

[0040] a1. Scan the spatial coordinates of each point on the surface of the canopy steel structure 1 to generate a three-dimensional point cloud model, and use the three-dimensional point cloud model to generate a 3D curved surface diagram of the canopy steel structure; in this step, after the installation of the canopy steel structure of the stadium and other large main bodies (in this embodiment, the stadium is taken as an example) is completed, the curved surface (which can be a spherical surface or other curved surface, and in this embodiment, the spherical surface is taken as an example) of the canopy steel structure is scanned and partitioned, the scanning points are arranged on the surface of the structure, the foot rack is set up, the 3D laser scanner is installed, and the scanning is performed along the meridian direction (the meridian direction refers to the direction perpendicular to the latitude direction, and the latitude direction refers to the direction from high to low of the canopy steel structure, i.e. the direction from the ridge line b to the gutter line c, referring to the definition of the meridian and latitude of the earth); the spatial coordinates of each point on the surface of the canopy steel structure obtained by the 3D laser scanner are used to generate a three-dimensional point cloud model and export a curved surface model, the three-dimensional point cloud model is imported into a 3D modeling software (such as Rhino, 3DS Max, Maya, Blender, etc.), a solid curved surface diagram of the canopy steel structure is generated, and a center line is marked on the curved surface diagram. The center line is generally a meridian line from the highest point of the ridge.

[0041] a2. Arrange the additional purlins for supporting the lighting panel on the 3D curved surface diagram of the canopy steel structure along the latitude direction to obtain a purlin arrangement model; the length direction of the additional purlins is in the meridian direction, and a plurality of additional purlins are arranged side by side in the latitude direction, are fixed on the steel canopy, and are adapted to the curved surface of the steel canopy in shape. Herein, no further description is given.

[0042] a3. Arrange the lighting panel on the purlin arrangement model of step a2 in combination with the structural size of the lighting panel:

[0043] a231. Divide the lighting panel into a plurality of lighting panel meridian units in the meridian direction, and arrange the plurality of lighting panel meridian units in a layered and hierarchical manner on the additional purlins from high to low, Figure 3The position of the layered stack is at the middle D, and a longitudinal arrangement model of the daylighting panel is obtained; as shown in the figure, the layered stack refers to the fact that in the longitudinally adjacent daylighting panels, the daylighting panel at the high position is higher than the daylighting panel at the low position by a set height, the height of the elevation in this embodiment is generally 70-100 mm, and 70 mm is adopted in this embodiment; meanwhile, there is an overlap with a set length; in order to ensure that the upper and lower daylighting panels in the longitudinal direction form the layered stack, the additional purlin is arranged or a special elevation structure is provided, and details are not described herein again;

[0044] a22. The longitudinal arrangement of the daylighting panel is arranged in order from the longitudinal center to both sides, and a longitudinal arrangement model of the daylighting panel is obtained; the longitudinal center refers to the position of the aforementioned center line, and details are not described herein again;

[0045] The sequence of steps a31 and a32 is not prior or posterior; in actual construction, generally, in order to ensure the layered stack of the daylighting panel in the latitudinal direction and ensure the construction of the internal sealing structure at the position of the stack, the daylighting panel at the low level is first installed in the latitudinal direction, and then the daylighting panel at the high level is installed layer by layer, and details are not described herein again; moreover, in order to avoid the interference of the stack position of the previous level on the installation of the next level, generally, the installation of the daylighting panel of the previous level is performed after the installation of all the daylighting panels in the longitudinal direction of the next level is completed, and details are not described herein again;

[0046] b. Installation and construction of the daylighting panel:

[0047] b1. According to the purlin arrangement model of step a2, the additional purlin is installed and constructed in parallel along the latitudinal direction on the shed steel structure 1; the additional purlin is fixed on the shed steel structure by an existing mechanical fixing mode, to form a basis for installing the daylighting panel;

[0048] b2. Installation of the daylighting panel:

[0049] b21. According to the latitudinal arrangement model of the daylighting panel of step a31, the daylighting panel is installed layer by layer on the additional purlin;

[0050] b22. According to the longitudinal arrangement model of the daylighting panel of step a32, the daylighting panel is installed on the additional purlin;

[0051] The sequence of steps b21 and b22 is not prior or posterior, and details are not described herein again, which is subject to the condition that there is no interference in the installation process and high efficiency.

[0052] In this embodiment, in step a1, the scanning is completed by using a laser scanning device, a 3D laser scanning device has the function of three-dimensional scanning and quickly acquiring parameters, and provides accurate theoretical guidance for the later construction;

[0053] The additional purlins include support purlins 2 for supporting the daylighting panels and raised purlins 3 for forming a layered and stacked arrangement of adjacent daylighting panels in the weft direction; the support purlins 2 are longitudinally arranged and at least two, even more, are arranged corresponding to one daylighting panel in the weft direction to ensure the stability of the support; the raised purlins 3 are arranged at the position close to the end (the lowest end) of the daylighting panel in the longitudinal direction, are raised relative to the support purlins 2 of the next level of daylighting panels in the weft direction, and are generally arranged near the joint between the adjacent daylighting panels in the longitudinal direction, and the length of 100 mm across the joint can ensure that the overall weight of the additional purlins is not excessively increased; of course, the raised purlins 3 can also be longitudinally arranged (such as Figure 2 The support purlins 2 are longitudinally arranged and at least two, even more, are arranged corresponding to one daylighting panel in the weft direction to ensure the stability of the support; the raised purlins 3 are arranged at the position close to the end (the lowest end) of the daylighting panel in the longitudinal direction, are raised relative to the support purlins 2 of the next level of daylighting panels in the weft direction, and are generally arranged near the joint between the adjacent daylighting panels in the longitudinal direction, and the length of 100 mm across the joint can ensure that the overall weight of the additional purlins is not excessively increased; of course, the raised purlins 3 can also be longitudinally arranged (such as

[0054] The daylighting panels include standard daylighting panels 4 with parallel long edges and non-standard daylighting panels 5 with non-parallel long edges; the long edges herein refer to the weft direction of the semicircular canopy steel structure, which will not be described here; the standard daylighting panels refer to the consistency in structure, shape and size, which facilitates processing and construction installation; the non-standard daylighting panels are relative to the standard daylighting panels, but as non-standard daylighting panels, they also have consistency in structure, shape and size, and can have standardized construction in the construction installation process; in this embodiment, the daylighting panels are polycarbonate hollow daylighting panels, and the size used in this embodiment is: the length of the standard daylighting panel is 13.5 meters, and the width is 1040㎜, which can be achieved according to the existing manufacturing process, transportation and construction length and width, but all the standard daylighting panels have the same size; the non-standard daylighting panels (which can be understood as fan-shaped) are obtained by cutting the standard daylighting panels, and in this embodiment, the non-standard daylighting panels are formed by cutting one long edge of the standard daylighting panel obliquely to adapt to the shape of the curved (spherical) steel canopy roof, and all the non-standard daylighting panels have the same shape, structure and size, and the width gradually increases from 500㎜ to 990mm, and the length is 13.5 meters;

[0055] In step a32, the light collecting plate is symmetrically divided into several zones on both sides with the spherical meridional center as the axis of symmetry, each zone is equipped with a certain number of non-standard light collecting plates and a certain number of standard light collecting plates to adapt to the shape of the non-closed curved steel shed; in actual construction, the zones are symmetrically divided left and right, and the width of each zone is controlled at 15m, each zone is controlled by two non-standard light collecting plates and multiple (a variable) standard light collecting plates, and the separation line between the zones is determined as the center line of the non-standard light collecting plate; the center line a of the non-standard light collecting plate is used as the reference control line of each zone to arrange the number of standard light collecting plates, the length of the standard light collecting plate is the maximum length (in the latitudinal direction) that can be achieved by the existing manufacturing method and transportation capacity, according to the remaining size of each zone after the installation of the standard light collecting plate, the non-standard light collecting plate is formed by cutting the standard light collecting plate on site, generally only one side is cut, the other side is the same as the standard light collecting plate, which is beneficial to splicing and fixing with the standard light collecting plate; in construction, the cross section of the cut light collecting plate (hollow plate in this embodiment) needs to be treated, such as sealing the edge with aluminum foil tape and other sealing materials;

[0056] That is, in step b22, the light collecting plate is installed in the meridional direction according to the model of step a32, the adjacent standard light collecting plates 4 are sealed and spliced by the standard connecting device 6, and the adjacent non-standard light collecting plates are sealed and spliced by the non-standard connecting device 7; of course, since the non-standard light collecting plate 5 is obtained by cutting one long side of the standard light collecting plate, the other long side is the same as the standard light collecting plate, therefore, the standard light collecting plate and the adjacent non-standard light collecting plate are sealed and spliced by the standard connecting device 6, which will not be described here; the standard connecting device 6 and the non-standard connecting device 7 refer to mechanical structures that can horizontally seal and connect standard light collecting plates and non-standard light collecting plates, such as the usual upper and lower sealing and pressing structures, which will not be described here.

[0057] In this embodiment, the standard connecting device 6 comprises a standard base 601 and a standard pressing piece 602, the standard base 601 is fixed to the additional purlin (may be the support purlin 2 or the elevated purlin 3, corresponding connection according to the installed position), and is fixedly connected with the standard pressing piece 602 upward to press and seal and fix the two standard light panels 4 adjacent upward; since the standard light panels adjacent in the warp direction (transverse direction) are spliced, the standard base 601 and the standard pressing piece 602 should be strip structures in the weft direction, and the length corresponds to the length of the standard light panel 4 in the warp direction (wherein the standard base 601 can be segmented in the length direction thereof, such as one segment corresponding to each additional purlin, which can reduce the weight and save materials, but the corresponding full-length setting with the standard light panel facilitates installation and alignment, and the full-length setting is adopted in this embodiment), the standard pressing piece 602 and the standard base 601 are located above and below the standard light panel 4 respectively and form a sealed press, that is, the standard pressing piece 602 and the standard base 601 lap and press the adjacent standard light panel 4 in the warp direction, complete the splicing of the standard light panels adjacent in the warp direction, and any mechanical structure capable of forming press and sealing can be adopted.

[0058] In the embodiment, the standard lighting panel 4 comprises a panel body and a bent edge 401 bent upward on both sides in the transverse direction; the cross section of the standard base 601 is an approximate I-shaped base, the upper flange 6011 of the I-shaped base is pressed on the bent edge 401 of the adjacent standard lighting panel 4 in the longitudinal direction on both sides, respectively, and the lower flange 6013 of the I-shaped base is fixed to the corresponding additional purlin (which can be the supporting purlin 2 or the elevated purlin 3, and the corresponding connection can be made according to the installation position), as shown in the drawings, the web 6012 of the I-shaped base penetrates upward between the bent edges of the two adjacent standard lighting panels 4 in the longitudinal direction, and the upper flange 6011 is pressed on the corresponding bent edge 401 on both sides in the transverse direction, forming a completed pressing structure, which has good integrity and is beneficial to improve the connection strength of the lighting panel; the approximate I-shaped refers to the cross section shape of the approximate I-shaped, which can be a symmetrical I-shaped structure or an asymmetrical I-shaped structure, and will not be described here; the standard pressing member cover is fixedly connected to the upper flange 6011 of the I-shaped base, and the transverse two sides of the standard pressing member 602 form downward standard pressing member side portions 6021, thereby forming two standard pressing member side portions 6021 on both sides in the transverse direction, as shown in the drawings, the two standard pressing member side portions 6021 are integrally formed on the transverse two ends of the standard pressing member and extend downward, straddling the two sides of the web 6012 of the I-shaped base; the lower end of the two standard pressing member side portions 6021 forms a foot portion, the foot portion forms an inboard extension portion 6022 extending inboard and an outboard extension portion 6023 extending outboard, where inboard and outboard refer to inboard and outboard in the transverse direction of the standard pressing member, inboard refers to the direction toward the web of the I-shaped base, and outboard refers to the direction away from the web of the I-shaped base, which will not be described here; the inboard extension portion 6022 is pressed on the root outer side 4011 of the bent edge 401 of the corresponding standard lighting panel 4, as shown in the drawings, the root outer side 4011 (referring to the transverse outer side, which is consistent with the aforementioned inboard and outboard directions) of the bent edge 401 of the standard lighting panel 4 is a smooth transition curved surface, and the end of the inboard extension portion 6022 also forms a pressing curved surface, after the standard pressing member 602 is fixed to the I-shaped base, the inboard extension portion 6022 is pressed on the root outer side 4011 of the bent edge 401, which ensures the pressing strength and prolongs the overall service life;

[0059] In order to ensure that the pressing does not form uneven stress, a flexible layer 607 is provided between the inner extension 6022 and the root outer side 4011, and a sealing material such as aluminum foil tape is generally used during construction, which can ensure the pressing strength while avoiding the problem of cracking, and also ensures the sealing effect and compaction effect; as shown in the figure, an integral aluminum foil tape is horizontally arranged on the folded edge 401 of two adjacent standard lighting panels 4 in the warp direction and extends to the root outer side 4011 of the edge, which has good integrity and has a pulling and fixing effect on the adjacent standard lighting panel, which is beneficial to improve the overall strength; the outer extension 6023 is sealed and installed with a standard sealing strip 606 which is in close contact with the standard lighting panel 4, as shown in the figure, the outer extension 6023 is provided with a standard sealing groove in the longitudinal direction, the standard sealing groove is a tapered opening groove, the standard sealing strip 606 is made of a material with a certain elasticity (such as the ternary ethylene-propylene sealing rubber strip used in this embodiment), the upper part is provided with an expansion head 6061 which is embedded in the standard sealing groove through the expansion head 6061, and the lower part is a sealing lip, the sealing lip includes an inclined bar 6062 extending outward and downward and a protruding sealing part 6063 located inward of the inclined bar and protruding downward, the protruding sealing part 6063 has a downward arc surface which is in elastic contact with the surface of the standard lighting panel 4, forming double sealing, the inclined bar faces the direction of incoming water and has a self-tight sealing effect under the pressure of water, combined with the elastic contact sealing arc surface, further ensuring the sealing effect; as shown in the figure, the upper part of the inclined bar 6062 extends upward to form a cover bar which closes the outer end of the outer extension 6023, avoiding water entering the standard sealing groove; the protruding sealing part 6063 is a hollow structure, which has better elastic contact sealing performance while saving production materials;

[0060] In order to ensure the aesthetic appearance and the sealing property of the top, a strip-shaped buckle 603 is further buckled on the upper part of the standard pressing member 602, as shown in the figure, the transverse sides of the strip-shaped buckle 603 are smoothly bent downward and form inward protrusions, the transverse sides of the standard pressing member near the top are provided with grooves, and the protrusions are embedded in the grooves with a certain pre-tightening force, so that the strip-shaped buckle is buckled on the standard pressing member.

[0061] In this embodiment, the root of the folded edge 401 of the standard lighting panel 4 is provided with a concave groove-shaped surface with smooth transition, and the end of the inner side extension 6022 is provided with a smooth curved surface which is adapted to the concave groove-shaped surface and is pressed together. As described above, the end of the inner side extension is provided with a curved surface structure which is adapted to the concave groove-shaped surface, so as to increase the pressing contact area and ensure the pressing strength. As shown in the drawings, the end of the inner side extension is integrally formed with an arc-shaped plate-shaped pressing head 60221, and the pressing curved surface is formed on the convex arc surface of the arc-shaped plate-shaped pressing head 60221. The transverse width of the arc-shaped plate-shaped pressing head is greater than the connection between the inner side extension 6022 and the arc-shaped plate-shaped pressing head 60221. Therefore, when the arc-shaped plate-shaped pressing head 60221 is pressed towards the root of the folded edge, the transverse sides of the arc-shaped plate-shaped pressing head have a certain deformation ability, so as to have good adaptability and ensure the stability of the pressing.

[0062] The edge 6021 of the standard pressing member 602 and the top are fixed by the reinforcing rib plate 6024 which is integrally formed with the edge 6021 and the top. As shown in the drawings, the reinforcing rib plate 6024 and the edge 6021 and the top of the standard pressing member 602 form a strip-shaped cavity. The reinforcing rib plate itself has a good reinforcing effect, and the structure of the strip-shaped cavity greatly increases the effect of the standard pressing member resisting bending moment, so as to improve the overall connection and pressing strength, and ensure the connection strength and sealing effect of the standard lighting panel.

[0063] The upper flange 6011 of the I-shaped base 601 is connected with the web 6012 of the I-shaped base 601 through the expansion part 60121. The two sides of the expansion part 60121 are respectively abutted with the folded edges 401 of the adjacent standard lighting panels 4. As shown in the drawings, the folded edges 401 are provided with recesses which are adapted to the expansion part. The adaptation means that the shapes are adapted to each other, which will not be described here. The expansion part is a hollow tubular structure. As shown in the drawings, the cross section of the expansion part 60121 of this embodiment is rectangular, and the web 6012 of the I-shaped base is expanded transversely at the position close to the upper flange 6011 and integrally formed with the upper flange (of course, other shapes such as inverted triangular shape can be used). The hollow tubular structure is beneficial to improve the ability of the web to resist bending moment without increasing the overall weight. As shown in the drawings, the standard pressing member 602 is fixedly connected with the upper flange 6011 of the I-shaped base through the screw 604. Due to the existence of the expansion part, the bending resistance of the upper flange 6011 is greatly increased, so as to ensure the connection strength of the standard pressing member and the I-shaped base.

[0064] The upper surface of the lower flange 6013 of the I-shaped base is flat for supporting the standard lighting panel 4. One side of the lower flange 6013 is formed with a concave mounting groove 60131. The mounting screw 605 is arranged in the mounting groove 60131 for fixing the lower flange 6013 to the additional purlin. The mounting groove 60131 is arranged to make the mounting screw 605 embedded in the mounting groove 60131, so as not to affect the flatness of the upper surface of the lower flange 6013, and to facilitate the support of the standard lighting panel 4. As shown in the drawings, the bottom of the lower flange 6013 is formed with a lengthwise buffer through groove 60132. The buffer through groove 60132 is away from the mounting groove. The buffer through groove is a rectangular groove with a rectangular cross section. Since one side (bounded by the web) of the lower flange 6013 of the I-shaped base is fixed to the additional purlin, and the other side directly rests on the additional purlin, the overall deformation adaptability of the I-shaped base is improved. In addition, the buffer through groove 60132 improves the buffer capacity of the support structure and further improves the deformation adaptability. Finally, the support structure has strong adaptability to the deformation of the standard lighting panel 4, and has good overall performance with the lighting panel and the additional purlin. Therefore, the lighting panel has high stability and long service life.

[0065] In the embodiment, the non-standard connecting device 7 includes a non-standard base 701 and a non-standard pressing member 702. The non-standard base 701 is fixed to the additional purlin (which can be the support purlin or the raised purlin according to different positions), and is fixedly connected with the non-standard pressing member 702 upward to press and seal the two non-standard lighting panels 5 adjacent in the warp direction. Since the two non-standard lighting panels 5 adjacent in the warp direction are spliced, the non-standard base 701 and the non-standard pressing member 702 should be strip structures in the weft direction, and the length corresponds to the length of the non-standard lighting panel in the warp direction. The non-standard pressing member 702 and the non-standard base 701 are arranged above and below the non-standard lighting panel 5 respectively and form a sealed press. That is, the non-standard pressing member and the non-standard base are overlapped and pressed in the warp direction to splice the two non-standard lighting panels adjacent in the warp direction. Any mechanical structure capable of forming a press and capable of sealing can be used.

[0066] In this embodiment, the connecting part between adjacent non-standard lighting panels 5 is a flat plate structure; the cross section of the non-standard base 701 is a T-shaped base with inverted T shape, the wing plate 7011 of the T-shaped base is fixed to the additional purlin, and the non-standard lighting panel 5 is supported downward on the wing plate 7011 of the T-shaped base 701; the non-standard pressing member 702 is fixed and connected downward on the web of the T-shaped base across two adjacent non-standard lighting panels 5, and the transverse two ends respectively form downward non-standard pressing member bending parts 7021, and the lower ends of the two non-standard pressing member bending parts 7021 are respectively sealed and installed with non-standard pressing member sealing strips 707 which are in close contact with the non-standard lighting panel; as shown in the figure, the lower ends of the two bending parts 7021 of the non-standard pressing member 702 are provided with non-standard pressing member sealing grooves along the longitudinal direction, the non-standard pressing member sealing grooves are necked opening grooves, the non-standard pressing member sealing strips are made of a material with certain elasticity (such as the EPDM sealing strip in this embodiment), the upper part is provided with an expansion head and is fitted in the non-standard sealing groove through the expansion head, and the lower part is a sealing lip, the sealing lip includes an inclined bar extending outward and downward and a convex sealing part with a downward protrusion inside the inclined bar, the structure is the same as the standard sealing strip, and the specific structure is referred to the standard sealing strip in the description of the first embodiment of the application. Figure 9 The convex sealing part has a downward arc surface which is in elastic contact with the panel surface of the non-standard lighting panel 5, forming double sealing, the inclined bar faces the direction of incoming water and has a self-tight sealing effect under the pressure of water, in combination with the sealing arc surface in elastic contact, further ensuring the sealing effect; as shown in the figure, the upper part of the inclined bar extends upward to form a cover strip closing the outside of the bending part 7021, avoiding water entering the standard sealing groove, and the convex sealing part is a hollow structure, having better elastic contact sealing performance while saving material for manufacturing;

[0067] As shown in the figure, the transverse two ends of the wing plate 7011 of the T-shaped base respectively form T-shaped base bending parts 70111 extending upward, the upper end of the T-shaped base bending part 70111 is provided with a T-shaped base sealing groove along the longitudinal direction, the T-shaped base sealing groove is a necked opening groove, the necked opening groove is provided with a T-shaped base sealing strip, the structure of the T-shaped base sealing strip is the same as that of the non-standard pressing member sealing strip, and the installation direction is opposite; the expansion head is fitted downward in the T-shaped base sealing groove, and the sealing lip holds the corresponding non-standard lighting panel upward, since the T-shaped base sealing strip is made of a material with certain elasticity (such as the EPDM sealing strip in this embodiment), it can not only hold the non-standard lighting panel, but also has certain buffering effect and deformation adaptation ability, thereby prolonging the service life of the whole lighting panel;

[0068] The non-standard connecting device 7 further comprises a C-shaped right-angle non-standard buckle strip 708 buckled to the inner end of the non-standard light panel 5 through a sealing gasket 709. As shown in the figure, the cross section of the C-shaped right-angle non-standard buckle strip 708 is rectangular with one side open, and the C-shaped right-angle non-standard buckle strip is buckled to the inner end (the end corresponding to the adjacent non-standard light panel) of the non-standard light panel 5 through the opening. The inner surface of the C-shaped right-angle non-standard buckle strip 708 is provided with the sealing gasket 709. The sealing gasket of the embodiment is an aluminum foil tape. During construction, the entire aluminum foil tape can be pasted on the inner end of the non-standard light panel and the upper and lower surfaces close to the inner end, and then the C-shaped right-angle non-standard buckle strip 708 is buckled. A certain buckling pre-tightening force can be set between the two wings of the C-shaped right-angle non-standard buckle strip to ensure the buckling strength. A plurality of buckle teeth 7081 (long strip buckle teeth with arc-shaped cross section, of course, they can also be triangular and should be inclined inward to ensure the buckling strength) are processed on the inner surfaces of the two wings. The inner surface of the web is processed with sealing teeth. After buckling, the strip-shaped buckle teeth and the sealing teeth are pressed against the sealing gasket and make the sealing gasket deform, which is used to increase the buckling strength and sealing performance, and is beneficial to protect the end of the non-standard light panel and improve its service life, which will not be described here.

[0069] The C-shaped right-angle non-standard buckle strip 708 extends upward to form a pressure bearing rib 7082 close to the web thereof. The non-standard compression piece 702 downwardly forms a pressure rib 7022, and the non-standard compression piece 702 is fixedly connected to the T-shaped base. The pressure rib 7022 tightly presses the pressure bearing rib 7082 and applies a transverse outward force to the pressure bearing rib 7082. As shown in the figure, the pressure bearing rib 7082 is integrally formed along the length direction of the C-shaped right-angle non-standard buckle strip 708, and the pressure rib is integrally formed along the length direction of the non-standard compression piece. The pressure rib 7022 is located on the inner side of the pressure bearing rib, and the side of the pressure bearing rib 7082 close to the pressure rib 7022 (the inner side of the pressure rib) is processed into an inclined surface. Similarly, the pressure rib is also processed with an inclined surface corresponding to the inclined surface of the pressure bearing rib. When the non-standard compression piece is fixed downwardly on the T-shaped base, the pressure rib 7022 acts on the pressure bearing rib 7082 through the inclined surface to form a downward and downward buckling direction component force (outward) of the C-shaped right-angle non-standard buckle strip 708, so as to further increase the buckling strength and sealing effect of the C-shaped right-angle non-standard buckle strip 708. In particular, the setting of the pressure bearing rib raises the end edge of the non-standard light panel, so that rainwater, cleaning water and the like cannot pass over the pressure bearing rib even after the sealing strip fails, thereby ensuring the sealing and water blocking effect of the non-standard light panel after installation. At the same time, the setting of the pressure rib and the pressure bearing rib also increases the bending resistance of the non-standard compression piece 702 and the C-shaped right-angle non-standard buckle strip 708, thereby ensuring the integrity and strength of the non-standard light panel installation.

[0070] The web 7012 of the T-shaped base is pressed against the lower end of the web of the C-shaped right-angle non-standard buckle strip 708 and exerts a transverse outward force; as shown in the figure, the web 7012 of the T-shaped base expands to the two lateral sides, and the two lateral surfaces form inclined surfaces which abut against the positions of the bottom corner of the web of the corresponding C-shaped right-angle non-standard buckle strip 708, and exert upward and clamping-direction component forces, and the pressing ribs of the non-standard pressing member increase the clamping force from the upper and lower directions, so as to ensure the clamping force and sealing performance of the C-shaped right-angle non-standard buckle strip 708 and the non-standard daylighting panel 5, thereby ensuring the integrity of the daylighting panel system; as shown in the figure, the web 7012 of the T-shaped base expands to the two lateral sides to form a hollow structure, which has a strong bending resistance and is beneficial to reducing the weight of the component; in this embodiment, the non-standard pressing member is fixed on the web 7012 of the T-shaped base by screws, which is convenient for construction; in order to ensure the aesthetic appearance and a certain sealing performance at the top, a strip-shaped non-standard buckle cover 703 is further buckled at the upper part of the non-standard pressing member; as shown in the figure, the two lateral sides of the strip-shaped non-standard buckle cover 703 are smoothly bent downward and form inward protrusions, recesses are arranged at the positions close to the top of the two lateral sides of the non-standard pressing member 702, the protrusions are embedded in the recesses with a certain pre-tightening force, so that the strip-shaped non-standard buckle cover is buckled on the non-standard pressing member; as shown in the figure, the end parts in the length direction (the end parts of the T-shaped base, the non-standard pressing member and the strip-shaped non-standard buckle cover 703) need to be buckled with end covers to ensure the sealing performance and the aesthetic appearance; for the specific structure, refer to Figure 13 The end cover 608 buckled at the end part of the middle standard connecting device 6 will not be described herein again.

[0071] In this embodiment, a waterproof structure 8 is arranged between the overlapping positions of the daylighting panel of the upper level and the daylighting panel of the lower level in the weft direction, and the waterproof structure 8 includes a first-level waterproof structure 801, an intermediate waterproof structure 802 and a final-level waterproof structure 803 arranged from bottom to top; here, the daylighting panel can be a standard daylighting panel and a non-standard daylighting panel, and the specific examples are shown in Figure 13 and 14 , taking the standard daylighting panel as an example; here, the upper level and the lower level refer to the daylighting panel gradually decreasing from top to bottom, and in order to ensure the waterproof effect, the daylighting panel of the upper level has a partial overlap with the daylighting panel of the lower level; in order to further avoid the backflow of water upward, the waterproof structure is arranged at the overlapping position, which can be multi-level, and the waterproof structure can be any waterproof structure capable of achieving water resistance in the prior art, including a waterproof pad and waterproof cotton arranged between the daylighting panel of the upper level and the daylighting panel of the lower level, which will not be described herein again; as shown in Figure 13 and Figure 14 , this embodiment takes the standard daylighting panel as an example for description, that is, the daylighting panel of the upper level is a standard daylighting panel 4, and the daylighting panel of the lower level is a standard daylighting panel 4a;

[0072] In the embodiment, the first waterproof structure 801 comprises a C-shaped right-angle sealing buckle 8011, a water-blocking layer 8012, and a water-blocking assembly comprising a water-blocking batten 8014 fixedly installed along the warp direction, the lower end of the water-blocking batten 8014 being provided with a water-blocking sealing strip 8015 in sealing contact with the upper surface of the lower standard daylighting panel 4a; the C-shaped right-angle sealing buckle 8011 is buckled to the downward end (inclined) of the upper standard daylighting panel 4 in the weft direction, one end of the water-blocking layer 8012 is sealingly installed on the C-shaped right-angle sealing buckle 8011, and the other end is sealingly installed on the water-blocking batten 8015 to form a blocking structure; in the embodiment, the daylighting panel is a hollow daylighting panel, and the end portion in the length direction needs to be sealed; the cross section of the C-shaped right-angle sealing buckle 8011 is a rectangular with one side open, and the end portion of the daylighting panel is clamped through the opening to form a blockage; of course, the inner surface of the wing plate of the C-shaped right-angle sealing buckle 8011 is provided with sealing teeth for increasing friction, and a certain pre-pressure is set to maintain good buckle strength and prevent water from flowing into the daylighting panel; the water-blocking layer 8012 is made of flexible waterproof material, and one end in the transverse direction is fastened and sealingly installed on the lower outer surface of the C-shaped right-angle sealing buckle 8011 by screws (the C-shaped right-angle sealing buckle should be provided with a position for installing the screws, such as the position between the web shown in the figure and the end portion of the daylighting panel); the length direction of the water-blocking batten 8014 is along the warp direction, and the water-blocking batten is fixedly installed in various ways; due to the structure, the two ends of the water-blocking batten in the length direction are fixed to the corresponding non-standard connecting device or standard connecting device; as shown in the figure, in the embodiment, the cross section of the water-blocking batten is T-shaped, the wing plates of the T-shaped structure at the two ends protrude the web to form a stop structure, and the wing plates are overlapped on the corresponding non-standard strip-shaped buckle cover or standard strip-shaped buckle cover and fastened by screws, the end portion of the web abuts against the side surface of the non-standard strip-shaped buckle cover or standard strip-shaped buckle cover to form a fixation; the lower end of the water-blocking batten 8014 forms a water-blocking sealing groove, the water-blocking sealing groove is a necked groove with an open lower portion, the upper portion of the water-blocking sealing strip 8015 is an expansion head embedded in the water-blocking sealing groove, and the lower portion is a sealing lip for sealing contact with the surface of the corresponding daylighting panel; therefore, the water-blocking sealing strip should have elasticity, and the embodiment adopts a three-component ethylene-propylene rubber sealing strip, the sealing lip is a structure with three pieces arranged side by side in the weft direction and inclined toward the water direction to sequentially form a water-blocking structure; the other end of the water-blocking layer is fixed on the web of the water-blocking batten by screws to form a water-blocking structure; in the structure, the water-blocking layer and the water-blocking assembly jointly constitute the first waterproof structure to avoid water backflow between the upper daylighting panel and the lower daylighting panel.

[0073] The intermediate waterproof structure 802 is a flexible structure, which is pressed and deformed between the upper and lower light collecting plates in the weft direction; as shown in the figure, the intermediate waterproof structure 802 can be one level or multiple levels, which is set according to the waterproof requirement; in the embodiment, the intermediate waterproof structure is EVA waterproof cotton, which is pressed between the upper and lower light collecting plates to form a water barrier;

[0074] The final waterproof structure comprises a final water blocking baffle strip, the upper end of which is fixed, and the lower end of which is sealed with a final water blocking sealing strip, which is in sealing contact with the upper surface of the light collecting plate; the structure of the final water blocking baffle strip and the final water blocking sealing strip is the same as that of the water blocking assembly, and will not be described again;

[0075] Through the setting of the three-level waterproof structure, water can be blocked from flowing back to the high place under the condition of large water volume, so as to ensure the waterproof performance of the light collecting plate system.

[0076] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A connection device for a flat-top skylight panel of a large main building steel canopy, characterized in that: The non-standard base is fixedly arranged and upwardly connected with the non-standard compression piece to compress and seal the two adjacent flat light collecting plates upwardly; The cross section of the non-standard base is a T-shaped base with inverted T shape, the wing plate of the T-shaped base is fixed to the additional purlin, and the flat light collecting plate is supported downwardly on the wing plate of the T-shaped base; the non-standard compression piece is fixedly connected downwardly to the web of the T-shaped base across the two adjacent flat light collecting plates, and the two ends of the non-standard compression piece are respectively formed with downward bending portions, and the lower ends of the two edge portions are respectively provided with the non-standard compression piece sealing strips which are in close contact with the flat light collecting plate. The non-standard connecting device further comprises a C-shaped right-angle non-standard buckle strip for buckling the inner side end of the flat light collecting plate through a sealing gasket, the C-shaped right-angle non-standard buckle strip is upwardly extended to form a pressure bearing rib near the web thereof, the non-standard compression piece is downwardly formed with a pressure applying rib, and after the non-standard compression piece is fixedly connected to the T-shaped base, the pressure applying rib tightly presses the pressure bearing rib and applies a transversely outward force to the pressure bearing rib; The web of the T-shaped base is tightly pressed with the lower end of the web of the C-shaped right-angle non-standard buckle strip and applies a transversely outward force to the lower end of the web of the C-shaped right-angle non-standard buckle strip; The lower ends of the two bending portions of the non-standard compression piece are provided with non-standard compression piece sealing grooves in the longitudinal direction, the non-standard compression piece sealing grooves are necked opening grooves, the non-standard compression piece sealing strips are made of elastic material, the upper portions of the non-standard compression piece sealing strips are provided with expansion heads and are embedded in the non-standard sealing grooves through the expansion heads, and the lower portions of the non-standard compression piece sealing strips are sealing lips; The web of the T-shaped base is expanded to the two lateral sides, and the two lateral surfaces are formed with inclined surfaces which abut against the positions of the bottom corners of the webs of the corresponding C-shaped right-angle non-standard buckle strips.

2. The large-scale main building steel canopy flat-lighting plate connecting device according to claim 1, characterized in that: The sealing lip comprises an inclined stopper which extends obliquely downwardly to the outside, and a convex sealing portion which is located inside the inclined stopper and has a downward protrusion, the convex sealing portion has a downward arc surface which is in elastic contact with the plate surface of the flat light collecting plate.

3. The large scale building steel shed flat roof daylighting panel connecting device according to claim 2, characterized in that: The upper portion of the inclined stopper is upwardly extended to form a cover strip which closes the outside of the bending portion; The convex sealing portion is a hollow structure.

4. The large scale building steel shed flat roof daylighting panel connecting device according to claim 3, characterized in that: The two ends of the wing plate of the T-shaped base are respectively formed with T-shaped base bending portions which extend upwardly, the upper end of the T-shaped base bending portion is provided with a T-shaped base sealing groove in the longitudinal direction, the T-shaped base sealing groove is a necked opening groove, the necked opening groove is provided with a T-shaped base sealing strip, and the T-shaped base sealing strip upwardly supports the corresponding flat light collecting plate.

5. The large scale building steel shed flat roof daylighting panel connecting device according to claim 1, characterized in that: The pressure bearing rib is integrally formed in the C-shaped right-angle non-standard buckle strip along the length direction, the pressure applying rib is integrally formed in the non-standard compression piece along the length direction, the pressure applying rib is located inside the pressure bearing rib, and the side surface of the pressure bearing rib which is close to the pressure applying rib is formed with an inclined surface, and the pressure applying rib is also formed with an inclined surface which is correspondingly matched with the inclined surface of the pressure bearing rib.

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