A dragon frame with waterproof function

Abstract

The invention discloses a keel frame with waterproof function, comprising a plurality of purlin assemblies and a plurality of purlin assemblies, each group of purlin assemblies comprises a purlin and a purlin cover plate, both sides of the purlin are provided with a purlin sealant groove and a purlin drainage ditch in sequence from the inside to the outside along the length direction, the purlin cover plate is arranged above the purlin sealant groove and between the two purlin drainage ditches; a plurality of purlin assemblies divide the plurality of purlin assemblies into a plurality of installation grids, each group of purlin assemblies comprises a purlin and a purlin cover plate, The cover plate and the two ends of the purlin are respectively connected with the vertical purlins on the corresponding sides, and the two sides of the purlin are provided with purlin sealant grooves and purlin drainage grooves in sequence from the inside to the outside along the length direction. The purlin cover plate is arranged above the purlin sealant groove and located between the two purlin drainage grooves, and the connection between the purlin cover plate and the vertical purlin assembly is located above the vertical purlin drainage groove. Compared with the prior art, the keel frame with waterproof function of the present invention has triple waterproof function, which can effectively prevent water from the roof from leaking into the room.

Description

Technical Field

[0001] The invention relates to the technical field of keel frames, and in particular to a keel frame with a waterproof function. Background Art

[0002] With the changes of the times, people's economic living conditions have gradually improved, and people are increasingly pursuing the quality and elegance of life, and have put forward higher requirements for the consistency and coordination of home decoration styles. Sunrooms are the most popular decoration design space nowadays. Through the outer layer design of glass, sunrooms allow residents to obtain better vision and lighting, and can also connect indoor and outdoor scenery to nature. With comfortable furniture and planting of considerable flowers, it creates a sunny, romantic and comfortable leisure space. The top of the sunroom is installed with photovoltaic panels through the keel frame, which can supply power to the sunroom and improve the indoor environment of the sunroom. Traditional keels usually include main beams and secondary beams. The main beams and secondary beams are staggered to form a "well" shape. Each grid surrounded by the main beams and secondary beams becomes an installation grid for installing photovoltaic panels. This kind of keel frame requires many main beams and secondary beams to form an installation grid. It is not only heavy and costly, but also prone to water leakage at the connection between the main beam and the secondary beam and the connection between the photovoltaic panel and the main beam and the secondary beam. Summary of the invention

[0003] The purpose of the present invention is to provide a keel frame with waterproof function, which is used to solve the above technical problems.

[0004] A keel frame with waterproof function, comprising:

[0005] A plurality of purlin assemblies are longitudinally arranged, each group of purlin assemblies comprises a purlin and a purlin cover plate, purlin sealant grooves and purlin drainage ditches are arranged on both sides of the purlin in sequence from inside to outside along the length direction, and the purlin cover plate is arranged above the purlin sealant groove and between two purlin drainage ditches;

[0006] A plurality of purlin assemblies are evenly distributed transversely between every two groups of adjacent vertical purlin assemblies, and the plurality of vertical purlin assemblies are evenly divided into a plurality of installation grids, each group of purlin assemblies includes a purlin and a purlin cover plate, both ends of the purlin are respectively connected to the vertical purlin on the corresponding side, and purlin sealant grooves and purlin drainage grooves are sequentially provided on both sides of the purlin along the length direction from inside to outside, the purlin cover plate is arranged above the purlin sealant groove and located between the two purlin drainage grooves, and the connection between the purlin cover plate and the vertical purlin assembly is located above the vertical purlin drainage groove.

[0007] According to one embodiment of the present invention, two purlin cover plate support walls located between two purlin sealant grooves are provided on the vertical purlin, and two cover plate connecting walls extend downward from the lower surface of the purlin cover plate. When the purlin cover plate is connected to the vertical purlin, the two purlin cover plate support walls are clamped between the two cover plate connecting walls.

[0008] According to one embodiment of the present invention, longitudinal mounting surfaces located outside the vertical purlin drainage ditch are provided on both sides of the vertical purlin, and transverse mounting surfaces located outside the transverse purlin drainage ditch are provided on both sides of the transverse purlin. When the transverse purlin is installed on the vertical purlin, the longitudinal mounting surface is equal in height to the transverse mounting surface.

[0009] According to one embodiment of the present invention, a vertical purlin rubber strip is provided on the longitudinal installation surface, and a horizontal purlin rubber strip is provided on the horizontal installation surface.

[0010] According to an embodiment of the present invention, the purlin assembly further comprises a purlin core, and the purlin core is used to connect two groups of purlin assemblies.

[0011] According to one embodiment of the present invention, the vertical purlin is a hollow structure, and the vertical purlin is provided with a cavity adapted to the shape of the vertical purlin core. The vertical purlin core is inserted into the cavity of two vertical purlins to connect the two vertical purlins together.

[0012] According to one embodiment of the present invention, a purlin core support wall and two purlin core water trough walls are provided on the upper surface of the vertical purlin core, and the purlin core support wall is provided between the two purlin core water trough walls, so that a purlin core water guide trough is formed between the purlin core support wall and the purlin core water trough wall.

[0013] According to one embodiment of the present invention, the angle between the two purlin core water tank walls and the upper surface of the vertical purlin core is greater than 90 degrees and less than 80 degrees.

[0014] According to one embodiment of the present invention, it also includes a plurality of main beams and a plurality of secondary beams, wherein the plurality of main beams are longitudinally arranged, the plurality of secondary beams are transversely arranged on the main beams, and the plurality of vertical purlin assemblies are longitudinally arranged on the secondary beams.

[0015] According to an embodiment of the present invention, the purlin assembly is arranged along the secondary beam and is located above the secondary beam.

[0016] Compared with the prior art, the keel frame with waterproof function of the present invention has the following advantages:

[0017] The keel frame with waterproof function of the present invention has the following three waterproof functions: 1. When the photovoltaic panel or gusset plate is installed in the installation grid, firstly, sealant is installed in the sealant groove of the vertical purlin and the sealant groove of the horizontal purlin, and then the photovoltaic panel or gusset plate is installed in the installation grid, and finally the vertical purlin cover plate and the horizontal purlin dry plate are respectively installed on the vertical purlin and the horizontal purlin, so that the surrounding of the photovoltaic panel or gusset plate is respectively pressed under the vertical purlin cover plate and the horizontal purlin cover plate, and the vertical purlin cover plate and the horizontal purlin cover plate can directly waterproof the gap at the connection between the photovoltaic panel or gusset plate and the vertical purlin or the horizontal purlin; 2. The sealant in the vertical purlin sealant groove and the horizontal purlin sealant groove seals the gap between the photovoltaic panel or gusset plate and the vertical purlin or horizontal purlin to perform secondary waterproofing; 3. When rainwater enters the gap between the photovoltaic panel or gusset plate and the vertical purlin or horizontal purlin, the vertical purlin drain groove and the horizontal purlin drain groove can collect rainwater and prevent rainwater from entering the room; when rainwater enters through the connection between the vertical purlin assembly and the horizontal purlin assembly, the rainwater falls into the vertical purlin drain groove again because the horizontal purlin cover plate is aligned with the vertical purlin drain groove; the above triple waterproofing function can effectively prevent rainwater from falling into the room. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a keel frame with waterproof function of the present invention;

[0019] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0020] Figure 3 for Figure 1 A partial enlarged view of B in the middle;

[0021] Figure 4 for Figure 1 Structural diagram of the middle purlin assembly;

[0022] Figure 5 for Figure 1 Structural diagram of the center purlin assembly;

[0023] Figure 6 It is a schematic diagram of the connection between the photovoltaic panel and the vertical purlin assembly;

[0024] Figure 7 It is a schematic diagram of the connection between the photovoltaic panel and the purlin assembly;

[0025] Figure 8 A schematic diagram of connecting two sets of vertical purlin components to the vertical purlin core;

[0026] Fig. 9 It is a schematic diagram of the connection relationship between the vertical purlin core and the vertical purlin;

[0027] In the figure: 1. purlin assembly, 11. purlin, 111. purlin sealant groove, 112. purlin drainage ditch, 113. purlin cover plate support wall, 1131. sealing convex strip, 114. longitudinal installation surface, 115. purlin rubber strip, 116. purlin sealant groove inner wall, 117. purlin sealant groove outer wall, 12. purlin cover plate, 121. cover plate connecting wall, 13. purlin core, 131. purlin core support wall, 132. purlin core water tank wall, 133. purlin core water guide groove, 2. purlin assembly, 21. Purlin, 211. Purlin sealant groove, 212. Purlin drainage ditch, 214. Horizontal installation surface, 215. Purlin rubber strip, 22. Purlin cover plate, 3. Main beam, 4. Secondary beam

[0028] The realization of the functions and advantages of the present invention will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0033] See also Figures 1 to 5 , Figure 1 FIG. 2 is a schematic diagram of the structure of the keel frame with waterproof function of the present invention; FIG. Figure 1 A partial enlarged view of middle A; Figure 3 for Figure 1 A partial enlarged view of B in the middle; Figure 4 for Figure 1 Structural diagram of the middle purlin assembly; Figure 5 for Figure 1 Schematic diagram of the structure of the middle purlin assembly. As shown in the figure, the keel frame with waterproof function includes a plurality of main beams 3, a plurality of secondary beams 4, a plurality of vertical purlin assemblies 1 and a plurality of horizontal purlin assemblies 2, a plurality of main beams 3 are arranged longitudinally, a plurality of secondary beams 4 are arranged transversely on the main beams 3, a plurality of vertical purlin assemblies 1 are arranged longitudinally on the secondary beams 4, a plurality of horizontal purlin assemblies 2 are evenly distributed transversely between every two adjacent vertical purlin assemblies 1, and a plurality of vertical purlin assemblies 1 are evenly divided into a plurality of installation grids. Each set of purlin components 1 includes a purlin 11 and a purlin cover plate 12. Purlin sealant grooves 111 and purlin drainage ditches 112 are sequentially provided on both sides of the purlin 11 along the length direction from the inside to the outside. The two purlin sealant grooves 111 are arranged between the two purlin drainage ditches 112. The purlin cover plate 12 is arranged above the purlin sealant grooves 111 and between the two purlin drainage ditches 112. Each set of purlin components 2 includes a purlin 21 and a purlin cover plate 22. The two ends of the purlin 21 are respectively connected to the purlin 11 on the corresponding side. Connection, purlin sealant grooves 211 and purlin drainage grooves 212 are provided on both sides of the purlin 21 in sequence from the inside to the outside along the length direction, the two purlin sealant grooves 211 are arranged between the two purlin drainage grooves 212, the purlin cover plate 22 is arranged above the purlin sealant grooves 211 and located between the two purlin drainage grooves 212, and the connection between the purlin cover plate 22 and the vertical purlin assembly 1 is located above the vertical purlin drainage groove 112.

[0034] In specific applications, the number of main beams 3 is not less than 2, two main beams 3 are arranged longitudinally, and a plurality of secondary beams 4 are evenly distributed between the two main beams 3 and connected to the main beams 3 through the first connecting member. When the photovoltaic roof is relatively large, the number of main beams 3 can be appropriately increased to increase the strength. Please review Figure 1 As shown in the figure, in this embodiment, there are three main beams 3, which are arranged longitudinally and the distance between the middle main beam 3 and the main beams 3 on both sides thereof is equal. The secondary beams 4 are evenly distributed on the three main beams 3 in the transverse direction.

[0035] Please review Figure 1 As shown in the figure, a plurality of vertical purlins 11 are evenly distributed on the secondary beam 4 in the longitudinal direction, a plurality of horizontal purlins 21 are evenly distributed between every two vertical purlins 11, both ends of the horizontal purlin 21 arranged between the two vertical purlins 11 are connected to the vertical purlin 11 through a second connecting member, and the horizontal purlins 21 on both sides of each vertical purlin 11 are symmetrically arranged, so that all the vertical purlins 11 and all the horizontal purlins 21 form a plurality of installation grids in a rectangular array.

[0036] Please review Figure 1 As shown in the figure, in order to minimize the shielding of the roof light by the keel assembly, a plurality of purlin assemblies 2 are arranged along a plurality of secondary beams 4 and are located above the secondary beams 4. The purlin assemblies 2 and the secondary beams 4 are arranged up and down, which minimizes the shielding of the roof light by the keel assembly.

[0037] Please review Figure 4 As shown in the figure, in this embodiment, a plurality of convex walls extending upward are symmetrically provided on the vertical purlin 11, and these convex walls are sequentially arranged from the center of the upper surface of the vertical purlin 11 to the outside, namely, the vertical purlin cover plate supporting wall 113, the vertical purlin sealant groove inner wall 116 and the vertical purlin sealant groove outer wall 117, the vertical purlin sealant groove inner wall 116 and the vertical purlin sealant groove outer wall 117 constitute the vertical purlin sealant groove 111, and the vertical purlin drainage ditch 112 is located on the outside of the vertical purlin sealant groove 111, and the vertical purlin drainage ditch 112 is formed by the inward depression of the upper surface of the vertical purlin 11.

[0038] Please review Figure 4 As shown in the figure, two cover connecting walls 121 extend downward from the lower surface of the purlin cover 12. When the purlin cover 12 is connected to the purlin 11, the two purlin cover supporting walls 113 are clamped between the two cover connecting walls 121. Each cover connecting wall 121 is respectively clamped between the purlin cover supporting wall 113 on the corresponding side and the inner wall 116 of the purlin sealant groove.

[0039] Please review Figure 4 As shown in the figure, in order to make the vertical purlin cover plate 12 and the vertical purlin 11 firmly connected, a sealing ridge 1131 is provided on the outer side of the vertical purlin cover plate support wall 113. When the vertical purlin 11 and the vertical purlin cover plate 12 are connected, the sealing ridge 1131 is stuck between the vertical purlin cover plate support wall 113 and the cover plate connecting wall 121.

[0040] Please review Figure 5 As shown in the figure, the structure and shape of the upper surface of the purlin 21, the purlin sealant groove 211 and the purlin drainage ditch 212 are the same as the vertical purlin 11, and the connection method between the purlin cover plate 22 and the purlin 21 is the same as the connection method between the vertical purlin cover plate 12 and the vertical purlin 11, which will not be repeated here.

[0041] See also Figures 4 to 7 , Figure 6 It is a schematic diagram of the connection between the photovoltaic panel and the vertical purlin assembly; Figure 7The schematic diagram of the photovoltaic panel and the purlin assembly is shown in the figure. As shown in the figure, in order to ensure the photovoltaic panel is stably installed on the purlin 11, the purlin 11 is provided with longitudinal mounting surfaces 114 located outside the purlin drainage ditch 112 on both sides, and the purlin 21 is provided with transverse mounting surfaces 214 located outside the purlin drainage ditch 212 on both sides. When the purlin 21 is installed on the purlin 11, the longitudinal mounting surface 114 and the transverse mounting surface 214 are at the same height. In this way, when the photovoltaic panel is installed on the purlin 11 and the purlin 21, the bottom of the photovoltaic panel can be stably placed on the longitudinal mounting surface 114 and the transverse mounting surface 214.

[0042] Please review Figure 4 and 7 As shown in the figure, in this embodiment, a vertical purlin rubber strip 115 is provided on the longitudinal mounting surface 114, and a horizontal purlin rubber strip 215 is provided on the horizontal mounting surface 214. The vertical purlin rubber strip 115 and the horizontal purlin rubber strip 215 can make the lower surface of the photovoltaic panel tightly connected with the vertical purlin 11 and the horizontal purlin 21, prevent rainwater from falling into the room through the lower surface of the photovoltaic panel, and further perform sealing and waterproofing treatment on the photovoltaic panel.

[0043] Please review Figure 4 As shown in the figure, in this embodiment, the side of the purlin drainage ditch 112 close to the longitudinal installation surface 114 is inclined downward from top to bottom, so that the purlin drainage ditch 112 forms a "√" shape. When rainwater enters from the gap between the photovoltaic panel and the purlin cover plate 12, due to the obstruction of the purlin rubber strip 115, the rainwater slides down the inclined side wall of the purlin drainage ditch and falls into the purlin drainage ditch 112.

[0044] Please review Figure 5 As shown in the figure, the shape of the purlin drainage ditch 212 is the same as that of the vertical purlin drainage ditch 112, which will not be repeated here.

[0045] Please review Figure 3 , Figure 8 and Fig. 9 , Figure 8 FIG. 9 is a schematic diagram of the connection relationship between the purlin core and the purlin. As shown in the figure, in actual application, when the size of the sun room is large, multiple groups of purlin assemblies 1 need to be arranged on the same column, and the tail of one group of purlin assemblies 1 is connected to the head of another group of purlin assemblies 1. The purlin assembly 1 also includes a purlin core 13, and the purlin core 13 connects the two groups of purlin assemblies 1. The purlin 11 is a hollow structure, and the purlin 11 is provided with a cavity that matches the shape of the purlin core 13. The purlin core 13 is inserted into the cavity of the two purlins 11 and connects the two purlins 11 together.

[0046] Please review Figure 8 and 9As shown in the figure, in order to avoid water leakage at the connection of the two sets of vertical purlin assemblies 1, the upper surface of the vertical purlin core 13 is provided with a purlin core support wall 131 and two purlin core water groove walls 132, and the purlin core support wall 131 is arranged between the two purlin core water groove walls 132, so that a purlin core water guide groove 133 is formed between the purlin core support wall 131 and the purlin core water groove wall 132. When rainwater enters the gap between the two sets of vertical purlin assemblies 1, the rainwater falls into the purlin core water guide groove 133 and is guided into the cavity of the vertical purlin 11 by the purlin core water guide groove 133.

[0047] Please review Fig. 9 As shown in the figure, in this embodiment, since the vertical purlin drainage ditch 112 is formed by the inward depression of the upper surface of the vertical purlin 11, the vertical purlin drainage ditch 112 forms a convex inclined surface in the cavity of the vertical purlin 11. When the vertical purlin core 13 is installed in the cavity of the vertical purlin 11, in order to make the vertical purlin core 13 avoid the inclined surface formed by the vertical purlin drainage ditch 112 in the cavity of the vertical purlin 11, the two purlin core water trough walls 132 are inclined and matched with the inclined surface formed by the vertical purlin drainage ditch 112 in the cavity of the vertical purlin 11. The angle of the vertical purlin drainage ditch 112 on the side close to the longitudinal installation surface 114 from top to bottom is greater than 0 degrees and less than 90 degrees, and the angle between the two purlin core water trough walls 132 and the upper surface of the vertical purlin core 13 is greater than 90 degrees and less than 180 degrees.

[0048] The installation method of the keel assembly of this embodiment is:

[0049] Several secondary beams 4 are transversely installed on the main beams 3 , and each secondary beam 4 spans across all the main beams 3 .

[0050] Afterwards, the vertical purlin 11 is longitudinally installed on the secondary beam 4 , and a plurality of horizontal purlins 21 are installed between two vertical purlins 11 .

[0051] Next, the vertical purlin rubber strips 115 are pasted on the longitudinal installation surfaces 114 of the vertical purlins 11 , and the horizontal purlin rubber strips 215 are pasted on the horizontal installation surfaces 214 of all the horizontal purlins 21 .

[0052] Then, the vertical purlin sealing adhesive groove 111 and the horizontal purlin sealing adhesive groove 211 are fully coated with sealing adhesive.

[0053] Then, multiple photovoltaic panels are installed in the installation grid surrounded by the vertical purlin 11 and the horizontal purlin 21, and the lower surface of the photovoltaic panel is pressed onto the vertical purlin rubber strip 115 and the horizontal purlin rubber strip 215 respectively, and the four sides of the photovoltaic panel are pressed onto the sealant.

[0054] Then, the vertical purlin cover plate 12 is installed on the vertical purlin 11, and the transverse purlin cover plate 22 is installed on the transverse purlin 21, and both ends of the vertical purlin cover plate 22 are pressed against the vertical purlin cover plates 12 on the corresponding sides.

[0055] Finally, use screws to fix the vertical purlin cover plate 12 to the vertical purlin 11, and fix the horizontal purlin cover plate 22 to the horizontal purlin 21. Please review Figure 6 and 7 After the photovoltaic panel is installed, the connection relationship between the vertical purlin assembly 1 and the horizontal purlin assembly 2 is as follows: Figure 6 As shown in Figure 7, the purlin cover plate 12 of the purlin assembly 1, the sealant in the purlin sealant groove 111 and the purlin drainage ditch 112 realize triple waterproofing function for the photovoltaic panel, and the purlin cover plate 22 of the purlin assembly 2, the sealant in the purlin sealant groove 211 and the purlin drainage ditch 212 realize triple waterproofing function for the photovoltaic panel.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A keel frame with waterproof function, characterized in that: include: A plurality of purlin assemblies (1), wherein the plurality of purlin assemblies (1) are arranged longitudinally, each group of purlin assemblies (1) comprises a purlin (11) and a purlin cover plate (12), purlin sealing adhesive grooves (111) and purlin drainage grooves (112) are sequentially arranged on both sides of the purlin (11) from inside to outside along the length direction, and the purlin cover plate (12) is arranged above the purlin sealing adhesive groove (111) and between two purlin drainage grooves (112); A plurality of purlin assemblies (2), wherein the plurality of purlin assemblies (2) are evenly distributed transversely between each two groups of adjacent vertical purlin assemblies (1), and the plurality of vertical purlin assemblies (1) are evenly divided into a plurality of installation grids, each group of purlin assemblies (2) comprises a purlin (21) and a purlin cover plate (22), the two ends of the purlin (21) are respectively connected to the vertical purlin (11) on the corresponding side, and the two sides of the purlin (21) are provided with a purlin sealing groove (211) and a purlin drainage ditch (212) in sequence from the inside to the outside along the length direction, the purlin cover plate (22) is arranged above the purlin sealing groove (211) and between the two purlin drainage ditches (212), and the connection between the purlin cover plate (22) and the vertical purlin assembly (1) is located above the vertical purlin drainage ditch (112); The vertical purlin (11) is provided with two vertical purlin cover plate supporting walls (113) located between the two vertical purlin sealing adhesive grooves (111); the lower surface of the vertical purlin cover plate (12) is provided with two cover plate connecting walls (121) extending downward; when the vertical purlin cover plate (12) is connected to the vertical purlin, the two vertical purlin cover plate supporting walls (113) are clamped between the two cover plate connecting walls (121); The vertical purlin (11) is provided with longitudinal mounting surfaces (114) located outside the vertical purlin drainage groove (112) on both sides, and the transverse mounting surfaces (214) are located outside the transverse purlin drainage groove (212) on both sides of the transverse purlin (21), and when the transverse purlin (21) is installed on the vertical purlin (11), the longitudinal mounting surfaces (114) and the transverse mounting surfaces (214) are at the same height; The longitudinal installation surface (114) is provided with a vertical purlin rubber strip (115), and the transverse installation surface (214) is provided with a transverse purlin rubber strip (215); The purlin assembly (1) further comprises a purlin core (13), wherein the purlin core (13) is used to connect two groups of purlin assemblies (1); The vertical purlin (11) is a hollow structure. The vertical purlin (11) is provided with a cavity that matches the shape of the vertical purlin core (13). The vertical purlin core (13) is inserted into the cavities of the two vertical purlins (11) to connect the two vertical purlins (11) together.

2. The keel frame with waterproof function according to claim 1, characterized in that: The upper surface of the vertical purlin core (13) is provided with a purlin core support wall (131) and two purlin core water groove walls (132); the purlin core support wall (131) is arranged between the two purlin core water groove walls (132), so that a purlin core water guide groove (133) is formed between the purlin core support wall (131) and the purlin core water groove wall (132).

3. The keel frame with waterproof function according to claim 2, characterized in that: The angle between the two purlin core water tank walls (132) and the upper surface of the vertical purlin core (13) is greater than 90 degrees and less than 180 degrees.

4. The keel frame with waterproof function according to claim 1, characterized in that: It also comprises a plurality of main beams (3) and a plurality of secondary beams (4), wherein the plurality of main beams (3) are arranged longitudinally, the plurality of secondary beams (4) are arranged transversely on the main beams (3), and the plurality of vertical purlin assemblies (1) are arranged longitudinally on the secondary beams (4).

5. The keel frame with waterproof function according to claim 4, characterized in that: A plurality of the purlin assemblies (2) are arranged along the secondary beam (4) and are located above the secondary beam (4).

Images