CN221031018U - Steel cover shed flat-mouth daylighting panel roof for large-scale main building - Google Patents

Abstract

The utility model discloses a steel cover shed flat-mouth daylighting roof for a large-scale main body building, which adopts flat-mouth daylighting boards consistent in size and shape, and performs sealing connection on the flat-mouth daylighting boards adjacent transversely, so that the flat-mouth daylighting boards and a connecting device have the property of standardized connection, and the flat-mouth daylighting boards are used as non-standard daylighting boards to fully play due roles in supplementing the structural defects when the standard daylighting boards are used, namely, the construction efficiency is greatly improved; the shape and the size of the flat-mouth daylighting panel are unified, so that the flat-mouth daylighting panel can be designed into a connecting piece with unified sealing property and reliability, and the sealing leakage prevention aspect and the connecting strength aspect can be ensured; the utility model can ensure that the lighting board has better integrity after construction and neat appearance, has better aesthetic feeling, and has higher connection strength and higher tightness compared with the prior art, thereby prolonging the service cycle of the whole lighting board plate and reducing the maintenance frequency and the cost.

Description

Steel cover shed flat-mouth daylighting panel roof for large-scale main building

Technical Field

The utility model relates to the field of construction of building steel structures and enclosure structures, in particular to a steel cover shed flat-mouth daylighting panel roof for a large-scale main building.

Background

Large-scale main body structure steel housing sheds such as stadium are usually designed into non-closed curved surface structural style, in order to realize the operation requirement of large-span, generally adopt pipe truss or grid structure. After the pipe truss or the net rack main body structure is installed, purlines are required to be installed, and the purlines are used as bearing supports of awning enclosing structures (daylighting panels or metal contour plates). In the prior art, the purlines are arranged to be grid-shaped, the structural sizes of different structural bodies and even grids of the same structural body are different, if the enclosure structure is a daylighting panel, different daylighting panels are required to be customized according to the sizes of different grids, so that the daylighting panel is more in specification, the efficiency of manufacturing and installing the daylighting panel is low, the grid arrangement mode is more in joints, the daylighting panel is poor in integrity, and the phenomena of air leakage and water leakage are very easy to cause.

In practice, especially for the transverse connection of flat-mouth daylighting panels (namely, the side connected with the flat-mouth daylighting panels is a flat plate), the sealing is realized, and excessive stress is not applied to the daylighting panels, so that the sealing is a large technical problem, and meanwhile, the joint of the flat-mouth daylighting panels is difficult to realize long-term use without water leakage in the prior art.

Therefore, the flat-mouth daylighting panel system structure in the prior art needs to be improved, standardized construction of the flat-mouth daylighting panel can be realized, the efficiency of the construction process is improved, the construction cost is saved, the purpose of long-term leakage prevention can be realized, and the service life of the flat-mouth daylighting panel system is prolonged.

Disclosure of utility model

In view of the above, the utility model aims to provide a steel cover shed flat-mouth daylighting panel roof for a large-scale main body building, which can realize standardized construction of the flat-mouth daylighting panel, improve the efficiency of the construction process, save the construction cost, realize the purpose of long-term leakage prevention and prolong the service life of the flat-mouth daylighting panel system.

The utility model relates to a steel awning plain end daylighting panel roof for a large-scale main body building, which comprises a steel awning, an additional purline arranged on the steel awning and a plain end daylighting panel supported on the additional purline; the shape and the size of the flat-mouth daylighting panel are consistent;

and in the transverse direction, the adjacent flat-mouth daylighting boards are spliced in a sealing way by adopting a non-standard connecting device.

Further, the nonstandard connecting device comprises a nonstandard base and a nonstandard pressing piece, wherein the nonstandard base is fixed on the additional purline, and two flat-mouth daylighting panels adjacent to each other in the warp direction are pressed, sealed and fixed by upward fixed connection with the nonstandard pressing piece.

Further, the cross section of the nonstandard base is an inverted T-shaped base, wing plates of the T-shaped base are fixed on the additional purlines, and the flat-mouth daylighting panel is downwards supported on the wing plates of the T-shaped base; the nonstandard pressing piece spans two adjacent nonstandard daylighting plates and is downwards fixedly connected to the web plate of the T-shaped base, the transverse two ends respectively form downwards bending parts, and the lower ends of the two edge parts are respectively and hermetically provided with a nonstandard pressing piece sealing strip which is in close contact with the flat-mouth daylighting plates.

Further, the nonstandard connecting device further comprises a C-shaped right-angle nonstandard buckling strip buckled on the inner side end part of the flat-mouth daylighting panel through a sealing gasket, the position, close to the web plate, of the C-shaped right-angle nonstandard buckling strip extends upwards to form a pressure-bearing rib, the nonstandard pressing piece downwards forms a pressure-bearing rib, and after the nonstandard pressing piece is fixedly connected with the T-shaped base, the pressure-bearing rib is tightly pressed by the pressure-bearing rib and exerts a transverse outward force on the pressure-bearing rib.

Further, the web of the T-shaped base is pressed with the lower end of the web of the C-shaped right-angle non-standard buckling strip and applies a transverse outward force.

Furthermore, the lower ends of the two bending parts of the nonstandard pressing part are provided with a nonstandard pressing part sealing groove along the longitudinal direction, the nonstandard pressing part sealing groove is a necking opening groove, the nonstandard pressing part sealing strip is made of elastic materials, the upper part of the nonstandard pressing part sealing strip is provided with an expansion head and is embedded in the nonstandard sealing groove through the expansion head, and the lower part of the nonstandard pressing part sealing strip is provided with a sealing lip.

Further, the sealing lip comprises an inclined baffle strip extending outwards and downwards and a convex sealing part which is positioned at the inner side of the inclined baffle strip and is provided with a downward bulge, and the convex sealing part is provided with a downward cambered surface which is in elastic contact with the plate surface of the flat-mouth daylighting plate.

Further, the upper part of the inclined baffle strip extends upwards to form a sealing strip for sealing the outer side of the bending part; the convex sealing part is of a hollow structure.

Further, the transverse two ends of the wing plate of the T-shaped base are respectively provided with an upward extending T-shaped base bending part, the upper end part of the T-shaped base bending part is provided with a longitudinal T-shaped base sealing groove, the T-shaped base sealing groove is a necking opening groove, the necking opening groove is provided with a T-shaped base sealing strip, and the T-shaped base sealing strip upwards supports the corresponding flat-mouth daylighting panel.

Further, the pressure-bearing rib is integrally formed on the C-shaped right-angle nonstandard buckle strip along the length direction, the pressure-bearing rib is integrally formed on the nonstandard pressing piece along the length direction, the pressure-bearing rib is positioned at the inner side of the pressure-bearing rib, the side face, close to the pressure-bearing rib, of the pressure-bearing rib is processed into an inclined plane, and the inclined plane which is correspondingly matched with the inclined plane of the pressure-bearing rib is also processed into the pressure-bearing rib;

The web of the T-shaped base expands towards two lateral sides, and inclined surfaces are formed on the surfaces of the two lateral sides and abut against the bottom corners of the web of the corresponding C-shaped right-angle nonstandard buckle strip.

The beneficial effects of the utility model are as follows: the steel cover shed flat-mouth daylighting panel roof for the large-scale main body building adopts flat-mouth daylighting panels consistent in size and shape, and performs sealing connection on the flat-mouth daylighting panels adjacent transversely, so that the flat-mouth daylighting panels and the connecting device have the characteristic of standardized connection, and the flat-mouth daylighting panels are used as non-standard daylighting panels to fully play due roles in supplementing the structural defects of the standard daylighting panels when in use, namely, the construction efficiency is greatly improved; the shape and the size of the flat-mouth daylighting panel are unified, so that the flat-mouth daylighting panel can be designed into a connecting piece with unified sealing property and reliability, and the sealing leakage prevention aspect and the connecting strength aspect can be ensured; the utility model can ensure that the lighting board has better integrity after construction and neat appearance, has better aesthetic feeling, and has higher connection strength and higher tightness compared with the prior art, thereby prolonging the service cycle of the whole lighting board plate and reducing the maintenance frequency and the cost.

Drawings

The utility model is further described below with reference to the drawings and examples.

FIG. 1 is a top view of a awning steel structure of the present utility model;

FIG. 2 is a plan view of an additional purlin of the present utility model (as installed in the awning steel structure of FIG. 1 during construction);

FIG. 3 is a schematic view of the layout of a lighting panel of the present utility model (attached purlins to FIG. 2 during construction);

FIG. 4 is a perspective view of a standard daylighting panel and a non-standard daylighting panel connection of the present utility model;

FIG. 5 is a cross-sectional view of a standard daylighting panel connection (warp-wise cross-section of awning steel structure);

FIG. 6 is a cross-sectional view of a standard lighting panel (warp direction of awning steel structure);

FIG. 7 is a cross-sectional view of an I-shaped base (warp direction of awning steel structure);

FIG. 8 is a cross-sectional view of a standard lamination (warp direction of awning steel structure);

FIG. 9 is a cross-sectional view of a standard seal strip (warp direction of awning steel structure);

FIG. 10 is a cross-sectional view of a non-standard daylighting panel connection (warp-wise cross-section of awning steel structure);

FIG. 11 is a cross-sectional view of a T-shaped base (warp direction of awning steel structure);

FIG. 12 is a cross-sectional view of a nonstandard press fit (warp direction of awning steel structure);

FIG. 13 is a cross-sectional view of a mating C-shaped right angle non-standard snap strip with gasket (the warp direction of awning steel);

fig. 14 is a perspective view (layered grade) of a latitudinal lighting panel arrangement;

fig. 15 is a longitudinal sectional view of a latitudinal lighting panel arrangement (latitudinal of a awning steel structure);

fig. 16 is a longitudinal cross-sectional view of the primary waterproof structure (latitudinal direction of awning steel structure).

Detailed Description

As shown in the figure: the utility model discloses a steel awning plain roof for a large-scale main building, which comprises a steel awning 1, additional purlines arranged on the steel awning 1 and plain roof lighting boards supported on the additional purlines, wherein the steel awning is provided with a plurality of steel beams; the shape and the size of the flat-mouth daylighting panel are consistent; the shape and the size of each flat-mouth daylighting panel are consistent, so that the construction efficiency is improved, and the connecting device is consistent;

and in the transverse direction, the adjacent flat-mouth daylighting boards are spliced in a sealing way by adopting a non-standard connecting device.

Because the additional purlines are adopted for supporting, the flat-mouth daylighting panel is made of materials in length (along the longitudinal direction of the roof) and can reach the length achieved by the manufacturing process, and in practice, the two sides of the length of the structure (such as a dome) of the standard daylighting panel are generally not parallel, the construction can be ensured in width, and the supporting strength is ensured;

In the embodiment, the structure of the utility model is described by using the flat-mouth daylighting panel in the construction process of a large-scale main building non-closed curved surface (or spherical surface) steel awning, mainly in order to adapt to the curved surface structure in construction, the flat-mouth daylighting panel of the utility model is used, and in order to distinguish standard daylighting panels, the flat-mouth daylighting panel is hereinafter called as a non-standard daylighting panel; the transverse direction is the warp direction of the non-closed curved surface (or spherical surface) steel canopy, and the longitudinal direction is the weft direction, which is not described herein again;

The system is constructed by the following method, which comprises the following steps:

a. Obtaining an arrangement model of the daylighting panel:

a1. Scanning to obtain space coordinates of each point on the surface of the awning steel structure 1 to generate a three-dimensional point cloud model, and generating a 3D curved surface diagram of the awning steel structure by using the three-dimensional point cloud model; in the step, after the installation of large-scale main bodies such as stadiums (the embodiment takes the stadium as a standard) and awning steel structures is completed, the curved surfaces (can be spherical surfaces or other curved surfaces, the embodiment takes the spherical surfaces as an example) of the awning steel structures are scanned in a partitioning way, scanning points are distributed on the surfaces of the structures, foot stands are supported, a 3D laser scanner is installed, and the awning steel structures are scanned along the warp direction (the warp direction refers to the direction perpendicular to the weft direction, and the weft direction refers to the direction from high to low of the awning steel structures, namely the direction from a ridge line b to a gutter line c, and the warp and weft of the earth are defined by reference); generating a three-dimensional point cloud model by using the space coordinates of each point on the surface of the awning steel structure obtained by a 3D laser scanner, deriving a curved surface model, importing the three-dimensional point cloud model into 3D modeling software (such as Rhino, 3DS Max, maya, blender and the like), generating an awning steel structure entity curved surface diagram, and marking a central line in the curved surface diagram, wherein the central line generally adopts a meridian of the highest point of a ridge;

a2. Arranging additional purlines for supporting the daylighting panel on the awning steel structure 3D curved surface diagram in parallel along the weft direction to obtain a purline arrangement model; the length direction of the additional purlines is in the warp direction and is in parallel arrangement in the weft direction, the additional purlines are fixed on the steel awning, the shape of the additional purlines is adapted to the curved surface of the steel awning, and the additional purlines are not repeated here;

a3. and (3) combining the structural size of the daylighting panel, and arranging the daylighting panel on the purline arrangement model in the step a 2:

a231. Dividing the daylighting panel into a plurality of daylighting panel warp units in the warp direction, wherein the plurality of daylighting panel warp units are arranged in a layered mode on the additional purlines from high to low, and the d position in the figure 3 is the position of the seal layer stacking level, so that a daylighting panel warp arrangement model is obtained; as shown in the figure, the layering level refers to that the lighting board positioned at a high position is higher than the lighting board positioned at a low position by a set height in the adjacent lighting boards in the warp direction, and the lifting height of the embodiment is generally 70-100mm, and the embodiment adopts 70mm; at the same time, having an overlap of a set length; in order to ensure that the upper lighting plate and the lower lighting plate are layered, the additional purlines are correspondingly arranged or specially provided with a lifting structure, and the additional purlines are not repeated here;

a22. The warp-wise arrangement of the daylighting panels is arranged in sequence from the warp-wise center to two sides, and a daylighting panel warp-wise arrangement model is obtained; the warp center refers to the position of the center line, and is not described herein;

The sequence of the step a31 and the step a32 is not sequential; in actual construction, in order to ensure layered and laminated arrangement of lighting boards in the weft direction and ensure construction of an internal sealing structure at the laminated position, the lighting boards in the low level are firstly installed in the weft direction, and then the lighting boards in the high level are installed layer by layer, which is not described herein again; in order to avoid the interference of the stacking position of the upper layer to the installation of the lower layer, the installation of all the lighting boards of the lower layer upwards is generally finished firstly, and then the installation of the lighting boards of the upper layer is carried out, so that the details are not repeated;

b. and (3) mounting and constructing a daylighting panel:

b1. Installing additional purlines on the awning steel structure 1 in parallel along the weft direction according to the purline arrangement model in the step a 2; the additional purlines are fixed on the awning steel structure in the existing mechanical fixing mode, so that a foundation for installing the daylighting panel is formed;

b2. Installing a daylighting panel:

b21. Installing the daylighting panels on the additional purlines layer by layer according to the daylighting panel latitudinal arrangement model in the step a 31;

b22. Installing the daylighting panel on the additional purline according to the daylighting panel warp direction arrangement model in the step a 32;

The order of the step b21 and the step b22 is not sequential, so that the steps are not interfered with each other and have high efficiency in the installation process, and the details are not repeated here.

In the embodiment, in step a1, scanning is completed by adopting laser scanning equipment, and the 3D laser scanning equipment has the functions of three-dimensional scanning and rapid parameter acquisition, so that accurate theoretical guidance is provided for later construction;

the additional purlines comprise supporting purlines 2 for supporting lighting boards and lifting purlines 3 for enabling adjacent lighting boards in the weft direction to be distributed in a layered level; the supporting purlines 2 are arranged in the longitudinal direction in a through manner, and at least two or more supporting purlines are arranged corresponding to one daylighting panel in the latitudinal direction, so that the stability of supporting is ensured; the lifting purline 3 is positioned at a position, close to the tail end (the lowest end) of the lighting board of the upper layer, of the warp direction, and is lifted relative to the supporting purline 2 of the lighting board of the upper layer and the lower layer of the weft direction, and is generally arranged near a joint between the adjacent lighting boards of the warp direction, and the length of the warp direction is 100mm, so that the whole weight of the additional purline is ensured not to be excessively increased; of course, the purline 3 can be raised in the radial direction (the purline is raised in the radial direction as shown in fig. 2, but in actual construction, the purline is raised in a generally segmented manner, so that the whole weight and the material saving are ensured), the better supporting and raising effects are achieved, the weight is increased, and the repeated description is omitted here; in this embodiment, the supporting purline 2 with the through length is a square tube with the length of 50×3mm, the lifting purline 3 is a square tube with the length of 100×50×3mm, as shown in the figure, the lifting purline can be welded on the first supporting purline of the next level through auxiliary components such as lugs, the distance between the upper surface of the lifting purline and the upper surface of the through length purline can be 100, which is not less than 70mm, and is generally less than 100mm, and the lifting purline 3 as shown in the figure can be directly welded on the first supporting purline 2 of the next level, but in order to ensure the lifting space, the height of the square tube adopted by the lifting purline should exceed 70mm, which is not repeated here.

In this embodiment, the lighting board includes a standard lighting board 4 with parallel long sides and a nonstandard lighting board 5 with non-parallel long sides; the long edges are weft directions along the steel structure of the semicircular awning, and are not repeated here; the standard daylighting panel has consistency in structure, shape and size, and is convenient to process and construct and install; the nonstandard daylighting panel is relative to the standard daylighting panel, but the nonstandard daylighting panel has the same consistency in structure, shape and size, and can have standardized construction in the construction and installation process; in this embodiment, the lighting board is a polycarbonate hollow lighting board, and the size adopted in this embodiment is: the standard lighting board has the length of 13.5 meters and the width of 1040 mm, and the standard lighting boards can be manufactured according to the length and the width which can be achieved by the existing manufacturing process, transportation and construction, but all the standard lighting boards have the same size; the nonstandard daylighting board (can be understood as a fan) is obtained by cutting on the basis of the standard daylighting board, in the embodiment, the nonstandard daylighting board is formed by cutting one long side of the standard daylighting board in an inclined mode so as to adapt to the shape of the steel cover shed roof with a curved surface (spherical surface), the shape structure and the size of all nonstandard daylighting boards are consistent, the board width is gradually increased from 500 mm to 990 mm, and the length is 13.5 m;

In the step a32, the lighting board is upwards and symmetrically divided into a plurality of areas towards two sides by taking the radial center of the spherical surface as a symmetry axis, and a set number of nonstandard lighting boards and a set number of standard lighting boards are arranged in each area so as to adapt to the shape of the non-closed curved steel hood; during actual construction, the left and right symmetrical partition is performed, partition control is performed according to the width of each partition of 15m, each partition is controlled on two nonstandard daylighting plates and a plurality of (variable) standard daylighting plates, and the partition line between the partitions is determined as the central line of the nonstandard daylighting plates; the standard lighting boards are distributed by taking the central line a of the nonstandard lighting boards as the reference control line of each area, the length of the standard lighting boards is the maximum length (weft direction) which can be achieved by the existing manufacturing method and transportation capacity, the nonstandard lighting boards are formed by cutting and blanking the standard lighting boards on site after measuring according to the residual size of the standard lighting boards in each area, and one side is generally cut, and the other side is the same as the standard lighting boards, so that the standard lighting boards are spliced and fixed; in construction, the cut section of the daylighting panel (hollow panel in this embodiment) needs to be treated, for example, sealing materials such as aluminum foil tape are used for sealing edges;

In the step b22, the daylighting panels are installed in the warp direction according to the model in the step a32, the adjacent standard daylighting panels 4 are spliced in a sealing way by adopting a standard connecting device 6, and the adjacent nonstandard daylighting panels are spliced in a sealing way by adopting a nonstandard connecting device 7; of course, the nonstandard lighting board 5 is obtained by cutting one long side by the standard lighting board, and the other long side is the same as the standard lighting board, so that the standard lighting board and the adjacent nonstandard lighting board are spliced in a sealing way by adopting the standard connecting device 6, and the repeated description is omitted; the standard connection device 6 and the nonstandard connection device 7 refer to mechanical structures capable of transversely sealing and connecting the standard lighting board and the nonstandard lighting board, such as common structures of upper and lower sealing and pressing, and the like, and are not described herein.

In this embodiment, the standard connection device 6 includes a standard base 601 and a standard pressing member 602, where the standard base 601 is fixed on an additional purline (possibly a supporting purline 2 or an elevating purline 3, which is correspondingly connected according to the installation position), and is fixedly connected with the standard pressing member 602 upwards to press and seal and fix two adjacent standard lighting panels 4 in the warp direction; because the standard lighting boards adjacent in the warp direction (transverse direction) are spliced, the standard base 601 and the standard pressing piece 602 are in strip structures in the weft direction, the length corresponds to the warp direction length of the standard lighting board 4 (wherein the standard base 601 can be arranged in a segmented manner in the length direction of the standard base, for example, each additional purline corresponds to one segment, so that the weight and the material can be reduced, but the arrangement of the standard base and the standard lighting board is convenient for installation and alignment, the embodiment adopts the arrangement mode of the through length), the standard pressing piece 602 and the standard base 601 are respectively located above and below the standard lighting board 4 and form sealing pressing, namely, the standard pressing piece 602 and the standard base 601 overlap-joint the adjacent standard lighting board 4 in the warp direction, the splicing of the standard lighting board adjacent in the warp direction is completed, and the embodiment can be realized by adopting a mechanical structure capable of forming pressing and sealing.

In this embodiment, the standard lighting board 4 includes a board body and a folded edge 401 with two lateral sides respectively bent upwards; the cross section of the standard base 601 is an i-shaped base similar to an i shape, two sides of an upper wing plate 6011 of the i-shaped base are correspondingly pressed on the folded edges 401 of the adjacent standard lighting boards 4 in the warp direction respectively, a lower wing plate 6013 of the i-shaped base is fixed on a corresponding additional purline (possibly a supporting purline 2 or a lifting purline 3 and correspondingly connected according to the installation position), as shown in the figure, a web 6012 of the i-shaped base upwards passes through between the folded edges of the adjacent two standard lighting boards 4 in the warp direction, and two lateral sides of the upper wing plate 6011 are respectively pressed on the corresponding folded edges 401 to form a finished lamination structure, so that the integrated composite structure has better integrity and is beneficial to improving the connection strength of the lighting boards; the approximate I-shape refers to an I-shape with an approximate cross section, which can be a symmetrical I-shaped structure or an asymmetrical I-shaped structure, and is not repeated here; the standard pressing member outer cover is fixedly connected to the upper wing plate 6011 of the i-shaped base, and two lateral sides of the standard pressing member 602 form downward standard pressing member edges 6021 respectively, so as to form two standard pressing member edges 6021 positioned at two lateral sides, and as shown in the figure, the two standard pressing member edges 6021 are respectively integrally formed at two lateral end parts of the standard pressing member and extend downward to cross two sides of the web 6012 of the i-shaped base; the lower ends of the two standard press-fit piece edge parts 6021 respectively form foot parts, the foot parts form an inner side extension part 6022 extending inwards and an outer side extension part 6023 extending outwards, wherein the inner side and the outer side refer to the directions inwards and outwards in the transverse direction of the standard press-fit piece, namely the direction towards the web plate of the I-shaped base, and the outwards refers to the direction away from the web plate of the I-shaped base, and the description is omitted herein; the inner extending portion 6022 is pressed against the root outer side 4011 of the corresponding flange 401 of the standard lighting board 4, as shown in the figure, the root outer side 4011 (which is referred to as the lateral outer side and is consistent with the outer side and the inner side directions) of the flange 401 of the standard lighting board 4 is a smooth transitional curved surface, and correspondingly, the end portion of the inner extending portion 6022 also forms a pressing curved surface, after the standard pressing member 602 is fixed on the i-shaped base, the inner extending portion 6022 is pressed against the root outer side 4011 of the flange 401, thereby ensuring the pressing strength and prolonging the whole service period;

In order to ensure that uneven stress is not formed in lamination, a flexible layer 607 is arranged between the inner extension portion 6022 and the root outer side 4011, and sealing materials such as aluminum foil tape are generally adopted in construction, so that the lamination strength is ensured, the fracturing problem is avoided, and the sealing effect and the compacting effect are ensured; as shown in the figure, an integral aluminum foil adhesive tape spans the folded edges 401 of two adjacent standard daylighting panels 4 in the warp direction and extends to the root outer sides 4011 of the edges respectively, so that the integral aluminum foil adhesive tape has good integrity and has a pulling and fixing effect on the adjacent standard daylighting panels, and is beneficial to improving the integral strength; the outside extension portion 6023 is provided with a standard sealing strip 606 closely contacted with the standard daylighting panel 4 in a sealing way, as shown in the figure, the bottom of the outside extension portion 6023 is provided with a standard sealing groove along the longitudinal direction, the standard sealing groove is a necking open groove, the standard sealing strip 606 is made of a material with certain elasticity (such as an ethylene propylene diene monomer sealing rubber strip adopted by the embodiment), the upper portion is provided with an expansion head 6061 and is embedded in the standard sealing groove through the expansion head 6061, the lower portion is provided with a sealing lip, the sealing lip comprises an inclined baffle 6062 extending outwards and downwards and a protruding sealing portion 6063 protruding downwards and positioned at the inner side of the inclined baffle, the protruding sealing portion 6063 is provided with a downward cambered surface and is elastically contacted with the surface of the standard daylighting panel 4, so that double sealing is formed, the inclined baffle faces the water coming direction, the sealing effect is achieved by self-tightening under the pressure of water, and the sealing effect is further ensured by combining with the sealing cambered surface in the elastic contact; as shown, the upper portion of the inclined rib 6062 extends upward to form a cover strip closing the outer end of the outer extension 6023, preventing water from entering the standard seal groove; the convex sealing part 6063 is of a hollow structure, so that the elastic contact sealing performance is better, and meanwhile, the manufacturing materials are saved;

In order to ensure aesthetic feeling of appearance and certain tightness of the top, the upper part of the standard pressing piece 602 is further buckled with a strip-shaped buckle cover 603, as shown in the figure, the two lateral sides of the strip-shaped buckle cover 603 are bent downwards smoothly and form inward protrusions, the positions, close to the top, of the two lateral sides of the standard pressing piece are provided with grooves, and the protrusions are embedded in the grooves with certain pretightening force, so that the strip-shaped buckle cover is buckled on the standard pressing piece.

In this embodiment, an outer side 4011 of a root portion of a folded edge 401 of the standard daylighting panel 4 forms an inner groove surface with smooth curved surface transition, and an end portion of the inner extension portion 6022 forms a smooth curved surface which is in shape fit with the inner groove surface and is pressed together; as mentioned above, the end of the inner extension part has a curved surface structure corresponding to the inner groove surface, which is beneficial to increasing the pressing contact area and ensuring the pressing strength; as shown in the figure, the end part of the inner extending part is integrally provided with an arc-shaped plate-shaped pressure head 60221, the pressing curved surface is formed on the convex cambered surface of the arc-shaped plate-shaped pressure head 60221, and the transverse width of the arc-shaped plate-shaped pressure head is larger than the connecting part of the inner extending part 6022 and the arc-shaped plate-shaped pressure head 60221, so that when the arc-shaped plate-shaped pressure head 60221 presses the outer side 4011 of the root part of the folded edge, the transverse two sides of the arc-shaped plate-shaped pressure head have certain deformability, thereby having better adaptability and being beneficial to ensuring the stability of pressing;

the edge 6021 and the top of the standard lamination 602 are reinforced and fixed by a reinforcing rib 6024 integrally formed with the edge 6021 and the top, as shown in the figure, a strip-shaped cavity is formed between the reinforcing rib 6024 and the edge 6021 and the top of the standard lamination 602, the reinforcing rib has a better reinforcing effect, the effect of the standard lamination on resisting bending moment is greatly improved due to the structure formed by the strip-shaped cavity, the integral connection and lamination strength are improved, and the connection strength and sealing effect of the standard lighting panel are ensured;

The upper wing plate 6011 of the i-shaped base 601 is connected with the web 6012 of the i-shaped base 601 through an expansion part 60111, two sides of the expansion part 60111 respectively prop against the folded edges 401 of the adjacent standard daylighting panels 4, as shown in the figure, the folded edges 401 are provided with recesses which are in shape with the expansion part, and the shape is in shape with the shape, and the details are not repeated; the expansion part is of a hollow tubular structure; as shown in the drawing, the cross section of the expansion portion 60111 of the present embodiment is rectangular, the web 6012 of the i-shaped base is transversely expanded (of course, may be of other shapes such as inverted triangle) at a position close to the upper wing plate 6011 and integrally formed with the upper wing plate, the hollow tubular structure is beneficial to improving the capability of the web to resist bending moment and does not increase the overall weight, and as shown in the drawing, the standard pressing member 602 is fixedly connected to the upper wing plate 6011 of the i-shaped base through the screw 604, and due to the existence of the expansion portion, the bending resistance of the upper wing plate 6011 is greatly increased, so as to ensure the connection strength of the standard pressing member and the i-shaped base;

The upper surface of the lower wing plate 6013 of the i-shaped base is a plane for supporting the standard daylighting panel 4, one side of the lower wing plate 6013 forms a concave mounting groove 60131, one side of the lower wing plate refers to the lower wing plate with a web as a boundary as two sides, and the mounting groove is positioned on one side of the lower wing plate, and is not described herein; the mounting groove 60131 is internally provided with the mounting screw 605 for fixing the lower wing plate 6013 on the additional purline, and the mounting groove 60131 is arranged so that the mounting screw is buried in the mounting groove 60131, thereby not affecting the flatness of the upper surface of the lower wing plate 6013 and being beneficial to supporting the standard daylighting panel 4; as shown in the figure, a buffer through groove 60132 in the length direction is formed at the bottom of the lower wing plate 6013, the buffer through groove 60132 avoids the mounting groove, and the buffer through groove is a rectangular groove with a cross section similar to a rectangle; because one side (with the web as the world) of the lower wing plate 6013 of the I-shaped base is fixed on the additional purline, the other side is directly lapped on the additional purline, so that the I-shaped base is integrally improved in the adaptability to deformation, meanwhile, due to the arrangement of the buffering through groove 60132, the supporting structure has better buffering capacity, the adaptability to deformation is further improved, and finally, the supporting structure can be better in adaptability to the deformation of the standard daylighting panel 4, so that the daylighting panel and the additional purline have better integrity, and the daylighting panel is integrally higher in stability, and the service life of the whole structure is prolonged.

In this embodiment, the nonstandard connection device 7 includes a nonstandard base 701 and a nonstandard pressing member 702, where the nonstandard base 701 is fixed on an additional purline (may be a supporting purline or a lifting purline according to different positions), and is fixedly connected with the nonstandard pressing member 702 upwards to press and seal two nonstandard lighting panels 5 adjacent to each other in the warp direction; because the non-standard daylighting panels 5 adjacent in the warp direction (transverse direction) are spliced, the non-standard base 701 and the non-standard lamination member 702 are in strip structures in the weft direction, the lengths of the non-standard daylighting panels correspond to the warp lengths of the non-standard daylighting panels, the non-standard lamination member 702 and the non-standard base 701 are respectively positioned above and below the non-standard daylighting panels 5 and form sealing lamination, namely the non-standard lamination member and the non-standard base overlap-joint lamination to the adjacent standard daylighting panels in the warp direction, and the splicing of the adjacent non-standard daylighting panels in the warp direction is completed, and the non-standard daylighting panels can be realized by adopting a mechanical structure capable of forming lamination and sealing.

In this embodiment, the connection part between adjacent non-standard daylighting panels 5 is a flat plate structure; the cross section of the nonstandard base 701 is an inverted T-shaped base, wing plates 7011 of the T-shaped base are fixed on the additional purlines, and the nonstandard daylighting panel 5 is supported downwards on the wing plates 7011 of the T-shaped base 701; the nonstandard pressing piece 702 spans two adjacent nonstandard daylighting plates 5 and is downwards fixedly connected to the web plate of the T-shaped base, the transverse two ends of the nonstandard pressing piece are respectively formed with a downward nonstandard pressing piece bending part 7021, and the lower ends of the two nonstandard pressing piece bending parts 7021 are respectively provided with a nonstandard pressing piece sealing strip 707 in tight contact with the nonstandard daylighting plates in a sealing manner; as shown in the figure, the lower ends of the two bending parts 7021 of the nonstandard pressing part 702 are provided with a nonstandard pressing part sealing groove along the longitudinal direction, the nonstandard pressing part sealing groove is a necking opening groove, the nonstandard pressing part sealing strip is made of a material with certain elasticity (such as an ethylene propylene diene monomer sealing rubber strip in the embodiment), the upper part of the nonstandard pressing part sealing strip is provided with an expansion head and is embedded in the nonstandard sealing groove through the expansion head, the lower part of the nonstandard pressing part sealing strip is provided with a sealing lip, the sealing lip comprises an inclined baffle strip extending downwards obliquely outwards and a protruding sealing part with a downward bulge, the structure is the same as that of the standard sealing strip, the specific structure is not repeated herein, the protruding sealing part is provided with a downward cambered surface and is in elastic contact with the plate surface of the nonstandard lighting plate 5, so as to form double sealing, the inclined baffle strip faces to the water direction, the self-tightening sealing effect is achieved under the water pressure, and the sealing effect is further ensured by combining the elastic contact sealing cambered surface; as shown in the figure, the upper part of the inclined baffle strip extends upwards to form a sealing strip for sealing the outer side of the bending part 7021, so that water is prevented from entering the standard sealing groove, the convex sealing part is of a hollow structure, and the manufacturing material is saved while the elastic contact sealing performance is better;

As shown in the figure, two transverse ends of a wing plate 7011 of the T-shaped base are respectively provided with a T-shaped base bending part 70111 extending upwards, the upper end part of the T-shaped base bending part 70111 is provided with a longitudinal T-shaped base sealing groove, the T-shaped base sealing groove is a necking opening groove, the necking opening groove is provided with a T-shaped base sealing strip, the T-shaped base sealing strip has the same structure as a non-standard pressing part sealing strip, and the installation direction is opposite; the expansion head is downwards embedded in the sealing groove of the T-shaped base, and the sealing lip upwards supports the corresponding nonstandard daylighting panel, and the T-shaped base sealing strip is made of a material with certain elasticity (such as an ethylene propylene diene monomer sealing rubber strip in the embodiment), so that the nonstandard daylighting panel can be supported, and the sealing strip has certain buffering function and deformation adaptation capability, so that the whole service life of the daylighting panel is prolonged;

The nonstandard connecting device 7 further comprises a C-shaped right-angle nonstandard buckling strip 708 buckled on the inner side end part of the nonstandard lighting board 5 through a sealing gasket 709, as shown in the figure, the cross section of the C-shaped right-angle nonstandard buckling strip 708 is rectangular and one side of the C-shaped right-angle nonstandard buckling strip is open, the C-shaped right-angle nonstandard buckling strip is buckled on the inner side end part (the end part corresponding to the adjacent nonstandard lighting board) of the nonstandard lighting board 5 through the opening, a sealing gasket 709 is attached to the inner surface of the C-shaped right-angle nonstandard buckling strip 708, the sealing gasket is an aluminum foil tape, during construction, the whole aluminum foil tape can be firstly pasted on the inner side end part of the nonstandard lighting board and the upper surface and the lower surface close to the inner side end part, then the C-shaped right-angle nonstandard buckling strip 708 is buckled, a certain buckling pre-tightening force can be set between the two wing boards of the C-shaped right-angle nonstandard buckling strip, buckling strength is ensured, a plurality of buckling teeth 7081 (the cross section is arc-shaped long buckling teeth, of course, the buckling teeth can also be triangular and should incline, the inner buckling is ensured), the inner surface of the web is provided with sealing teeth, the sealing teeth are processed on the inner surface, and the sealing teeth are deformed, the sealing teeth are concave sealing teeth, the sealing teeth are not are deformed, and the sealing teeth are used for sealing gaskets, and the sealing teeth are deformed, and the sealing teeth are deformed, and the sealing teeth are and the sealing surfaces are further and the sealing surfaces are deformed;

The position of the C-shaped right-angle non-standard buckling strip 708 close to the web plate thereof extends upwards to form a pressure-bearing rib 7082, the non-standard pressing member 702 downwards forms a pressure-bearing rib 7022, and after the non-standard pressing member 702 is fixedly connected to the T-shaped base, the pressure-bearing rib 7022 presses the pressure-bearing rib 7082 and exerts a transverse outward force on the pressure-bearing rib 7082; as shown in the figure, the pressure-bearing rib 7082 is integrally formed on the C-shaped right-angle nonstandard buckling strip 708 along the length direction, the pressure-bearing rib is integrally formed on the nonstandard pressing piece along the length direction, the pressure-bearing rib 7022 is positioned at the inner side of the pressure-bearing rib, the side face, close to the pressure-bearing rib 7022, of the pressure-bearing rib 7082 is processed into an inclined surface, and likewise, the pressure-bearing rib is also processed into an inclined surface which is correspondingly matched with the inclined surface of the pressure-bearing rib, when the nonstandard pressing piece is downwards fixed on the T-shaped base, the pressure-bearing rib 7022 acts on the pressure-bearing rib 7082 through the inclined surface to form a component force (outwards) downwards and towards the buckling direction of the C-shaped right-angle nonstandard buckling strip, so that the C-shaped right-angle nonstandard buckling strip 708 further increases buckling strength and sealing effect; particularly, the arrangement of the pressure-bearing ribs lifts the edge of the end part of the non-standard daylighting panel, so that rainwater, cleaning water and the like can not pass through the pressure-bearing ribs even after the sealing strip fails, and the sealing and water blocking effects of the non-standard daylighting panel after being installed are ensured; meanwhile, the arrangement of the pressing ribs and the pressure-bearing ribs also increases the bending resistance of the nonstandard pressing piece 702 and the C-shaped right-angle nonstandard buckling strip 708, so that the installation integrity and the installation strength of the nonstandard daylighting panel are ensured;

The web 7012 of the T-shaped base compresses and applies a laterally outward force against the lower end of the web of the C-shaped right angle non-standard clip strip 708; as shown in the figure, the web 7012 of the T-shaped base expands towards two lateral sides, and inclined surfaces are formed on the two side surfaces, and the inclined surfaces are propped against the positions of the corners at the bottom of the web of the corresponding C-shaped right-angle nonstandard buckling strip 708, and apply component forces in the upward and buckling directions, so that the buckling force is increased from the upper direction and the lower direction by the pressing rib of the nonstandard pressing piece, and the buckling force and the tightness of the C-shaped right-angle nonstandard buckling strip 708 and the nonstandard daylighting panel 5 are ensured, thereby ensuring the integrity of the daylighting panel system; as shown, the web 7012 of the T-shaped base expands to two lateral sides to form a hollow structure, which has a stronger bending resistance effect and is beneficial to reducing the weight of the component; in the embodiment, the nonstandard pressing part is downwards fixed on the web 7012 of the T-shaped base through a screw, so that the construction is convenient; in order to ensure aesthetic feeling of appearance and certain tightness of the top, the upper part of the nonstandard pressing piece is also buckled with a strip nonstandard cover 703, as shown in the figure, the two lateral sides of the strip nonstandard cover 703 are bent downwards smoothly and form inward bulges, the positions, close to the top, of the two lateral sides of the nonstandard pressing piece 702 are provided with grooves, and the bulges are embedded in the grooves with certain pretightening force, so that the strip nonstandard cover is buckled on the nonstandard pressing piece; as shown, the end caps are required to be buckled at the ends in the length direction (the ends of the T-shaped base, the nonstandard pressing piece and the strip nonstandard buckle cover 703), so that the sealing is ensured and the appearance is ensured; the specific structure refers to the end cap 608 fastened at the end of the standard connection device 6 in fig. 13, and will not be described herein.

In this embodiment, a waterproof structure 8 is disposed between the overlapping portions of the lighting panel of the upper layer and the lighting panel of the lower layer in the weft direction, and the waterproof structure 8 includes a first-stage waterproof structure 801, a middle waterproof structure 802 and a last-stage waterproof structure 803 which are arranged from bottom to top; the daylighting panel may be a standard daylighting panel or a non-standard daylighting panel, as shown in fig. 13 and 14, and the standard daylighting panel is taken as an example; the upper layer and the lower layer refer to that the daylighting panels are lowered layer by layer from top to bottom, and in order to ensure the waterproof effect, the daylighting panels of the upper layer are partially overlapped with the daylighting panels of the adjacent lower layer; in order to further avoid upward backflow of water, a waterproof structure is arranged at the overlapped position and can be multi-stage, and the waterproof structure can be any waterproof structure capable of realizing water blocking in the prior art, and the waterproof structure comprises a waterproof pad, waterproof cotton and the like which are clamped between a lighting board at the upper level and a lighting board at the lower level, and the waterproof structure is not repeated here; as shown in fig. 13 and 14, the present embodiment is described taking a standard daylighting panel as an example, that is, the daylighting panel at the previous level is the standard daylighting panel 4, and the standard daylighting panel 4a at the next level;

In this embodiment, the primary waterproof structure 801 includes a C-shaped right-angle sealing buckle 8011, a water blocking layer 8012, and a water blocking component, where the water blocking component includes a water blocking strip 8014, the water blocking strip 8014 is fixedly installed along the warp direction, a water blocking sealing strip 8015 is sealed at the lower end, and the water blocking sealing strip 8015 is in sealing contact with the upper surface of the next-stage standard lighting panel 4 a; the C-shaped right-angle sealing buckle 8011 is buckled at the downward end (inclined) of the standard daylighting panel 4 at the upper level in the weft direction, one end of the water blocking layer 8012 is sealed and installed at the C-shaped right-angle sealing buckle 8011, and the other end of the water blocking layer 8012 is sealed and installed at the water blocking panel 8015 to form a blocking structure; in the embodiment, the lighting board is a hollow lighting board, the end part in the length direction needs to be sealed, the cross section of the C-shaped right-angle sealing buckle 8011 is a rectangle with one side open, the opening is clamped at the end part of the lighting board and forms a plug, of course, the inner surface of a wing plate of the C-shaped right-angle sealing buckle 8011 is provided with sealing teeth for increasing friction, and meanwhile, certain pre-pressure is set, so that good buckle strength can be kept, and water is prevented from flowing into the lighting board; the water blocking layer 8012 is made of flexible waterproof material, and one transverse end of the water blocking layer is fastened and sealed on the outer surface of the C-shaped right-angle sealing buckle 8011 (the position of the mounting screw is reserved by the C-shaped right-angle sealing buckle, and a position for mounting the screw is arranged between a web plate and the end part of the daylighting panel as shown in the figure, or a position for mounting the water blocking layer can be formed by extending the lower side wing plate backwards); the length direction of the water retaining strip 8014 is along the warp direction, the fixed installation modes of the water retaining strip are various, and due to the structural reasons, the two ends of the water retaining strip in the length direction are fixed on the corresponding non-standard connecting devices or standard connecting devices, as shown in the figure, in the embodiment, the cross section of the water retaining strip is T-shaped, the T-shaped wing plates at the two ends grow out of the web plates to form a spigot structure, the wing plates are lapped on the corresponding strip non-standard buckle cover or strip standard buckle cover and fastened by screws, and the end parts of the web plates are propped against the side surfaces of the strip non-standard buckle cover or the strip standard buckle cover to form fixation; the lower end of the water retaining strip 8014 is provided with a water retaining sealing groove, the water retaining sealing groove is a necking groove with an opening at the lower part, the upper part of the water retaining sealing strip 8015 is provided with an expansion head and is embedded in the water retaining sealing groove through the expansion head, and the lower part of the water retaining sealing strip is provided with a sealing lip for sealing contact with the surface of a corresponding daylighting panel, so that the water retaining sealing strip has elasticity, the embodiment adopts an ethylene propylene diene monomer sealing strip, and the sealing lip is of a structure which is arranged in parallel along three weft directions and inclines towards the water supply direction, and water blocking is sequentially formed; the other end of the water blocking layer is fixed on the web plate of the water blocking lath through a screw to form a water blocking structure; in the structure, the water blocking layer and the water blocking component form primary waterproof together, so that water is prevented from flowing back between the lighting panel of the upper level and the lighting panel of the lower level;

The middle waterproof structure 802 is a flexible structure, is pressed and has a certain deformation, and is positioned between the lighting panel of the upper layer and the lighting panel of the lower layer in the weft direction; as shown, the intermediate waterproof structure 802 may be one-stage or multi-stage, and is set according to waterproof requirements; in the embodiment, the middle waterproof structure is EVA waterproof cotton blocking, and is pressed between the lighting board of the upper level and the lighting board of the lower level to form water blocking;

The final waterproof structure comprises a final water retaining lath, the upper end of the final water retaining lath is fixed, the lower end of the final water retaining lath is provided with a final water retaining sealing strip in a sealing manner, and the final water retaining sealing strip is in sealing contact with the upper surface of the daylighting panel; the structures of the final-stage water retaining batten and the final-stage water retaining sealing strip are the same as the structures of the water blocking components, and the structures are not repeated;

Through tertiary waterproof construction's setting, can block the water under the big water yield condition and flow backwards to the eminence to guarantee the waterproof performance of daylighting panel system.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims (10)

1. A steel cover canopy plain end daylighting panel roof for large-scale main part building, its characterized in that: the steel awning comprises a steel awning, an additional purline arranged on the steel awning and a flat-mouth daylighting panel supported on the additional purline; the shape and the size of the flat-mouth daylighting panel are consistent;

and in the transverse direction, the adjacent flat-mouth daylighting boards are spliced in a sealing way by adopting a non-standard connecting device.

2. The steel covered ceiling plain roof panel roof for a large main building of claim 1, wherein: the nonstandard connecting device comprises a nonstandard base and a nonstandard pressing part, wherein the nonstandard base is fixed on the additional purline, and two flat-mouth daylighting panels adjacent to each other in the warp direction are pressed, sealed and fixed by upward fixed connection with the nonstandard pressing part.

3. The steel covered ceiling plain roof panel roof for a large main building of claim 2, wherein: the cross section of the nonstandard base is an inverted T-shaped base, wing plates of the T-shaped base are fixed on the additional purlines, and the flat-mouth daylighting panel is downwards supported on the wing plates of the T-shaped base; the nonstandard pressing piece spans two adjacent nonstandard daylighting plates and is downwards fixedly connected to the web plate of the T-shaped base, the transverse two ends respectively form downwards bending parts, and the lower ends of the two edge parts are respectively and hermetically provided with a nonstandard pressing piece sealing strip which is in close contact with the flat-mouth daylighting plates.

4. A steel covered roof panel roof for a large body building as claimed in claim 3, wherein: the nonstandard connecting device further comprises a C-shaped right-angle nonstandard buckling strip buckled on the inner side end part of the flat-mouth daylighting plate through a sealing gasket, the position, close to the web plate, of the C-shaped right-angle nonstandard buckling strip extends upwards to form a pressure-bearing rib, the nonstandard pressing piece downwards forms a pressure-bearing rib, and after the nonstandard pressing piece is fixedly connected with the T-shaped base, the pressure-bearing rib is tightly pressed by the pressure-bearing rib and exerts a transverse outward force on the pressure-bearing rib.

5. The steel covered ceiling plain roof panel roof for a large main building of claim 4, wherein: the web of the T-shaped base is pressed with the lower end of the web of the C-shaped right-angle nonstandard buckle strip and exerts a transverse outward force.

6. The steel covered ceiling plain roof panel roof for a large main building of claim 4, wherein: the lower ends of the two bending parts of the nonstandard pressing part are provided with a nonstandard pressing part sealing groove along the longitudinal direction, the nonstandard pressing part sealing groove is a necking opening groove, the nonstandard pressing part sealing strip is made of elastic materials, the upper part of the nonstandard pressing part sealing strip is provided with an expansion head and is embedded in the nonstandard sealing groove through the expansion head, and the lower part of the nonstandard pressing part sealing strip is provided with a sealing lip.

7. The steel covered ceiling plain roof panel roof for a large main building of claim 6, wherein: the sealing lip comprises an inclined baffle strip extending outwards and downwards and a convex sealing part which is positioned at the inner side of the inclined baffle strip and is provided with a downward bulge, and the convex sealing part is provided with a downward cambered surface which is in elastic contact with the plate surface of the flat-mouth daylighting plate.

8. The steel covered ceiling plain roof panel roof for a large main building of claim 7, wherein: the upper part of the inclined baffle strip extends upwards to form a sealing strip for sealing the outer side of the bending part; the convex sealing part is of a hollow structure.

9. The steel covered ceiling plain roof panel roof for a large main building of claim 5, wherein: the transverse two ends of the wing plate of the T-shaped base are respectively provided with an upward extending T-shaped base bending part, the upper end part of the T-shaped base bending part is provided with a longitudinal T-shaped base sealing groove, the T-shaped base sealing groove is a necking opening groove, the necking opening groove is provided with a T-shaped base sealing strip, and the T-shaped base sealing strip upwards supports the corresponding flat-mouth daylighting panel.

10. The steel covered ceiling plain roof panel roof for a large main building of claim 4, wherein: the pressure-bearing rib is integrally formed on the C-shaped right-angle nonstandard buckle strip along the length direction, the pressure-bearing rib is integrally formed on the nonstandard pressing piece along the length direction, the pressure-bearing rib is positioned at the inner side of the pressure-bearing rib, the side face, close to the pressure-bearing rib, of the pressure-bearing rib is processed into an inclined plane, and the pressure-bearing rib is also processed into an inclined plane which is correspondingly matched with the inclined plane of the pressure-bearing rib;

The web of the T-shaped base expands towards two lateral sides, and inclined surfaces are formed on the surfaces of the two lateral sides and abut against the bottom corners of the web of the corresponding C-shaped right-angle nonstandard buckle strip.