Waterproof assembly type roof connecting structure
By using a combined structure that connects the bottom frame, the roof bottom frame, and the inverted V-shaped roof beam, and by utilizing alignment blocks and sealing rings to achieve automatic alignment and multi-point sealing, the problems of difficult installation and leakage of prefabricated roofs are solved, and the installation efficiency and waterproof performance are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-03
AI Technical Summary
Prefabricated roofs are difficult to align with pre-drilled holes during installation, resulting in time-consuming installation and leakage problems, which affect efficiency.
It adopts a combined structure of connecting the bottom frame, roof bottom frame, inverted V-shaped roof beam and roof panel, and uses alignment blocks and fitting grooves to achieve automatic alignment. It combines sealing rings and U-shaped sealing strips for multi-point sealing, and uses bolts to fix each component.
It enables installation without adjusting the hole positions, improving installation efficiency, and ensures waterproofing through multi-point sealing to prevent leakage.
Smart Images

Figure CN224078491U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated roofing technology, specifically to a waterproof prefabricated roofing connection structure. Background Technology
[0002] Prefabricated houses are built using industrialized production methods. Some or all of the house components are prefabricated in a factory, then transported to the construction site, and assembled using reliable connection methods. The roof panels of prefabricated houses are mostly installed and fixed using expansion bolts.
[0003] When installing prefabricated roofs, hoisting equipment is often required. After the roof is hoisted to the top of the building wall, it is not easy to align with the reserved holes, which requires time-consuming adjustments. Moreover, there are leaks at the joints between the prefabricated roof and the building wall, as well as at the joints of the roof panels, after installation, which require subsequent caulking. The process is quite cumbersome and affects the installation efficiency. Utility Model Content
[0004] The purpose of this utility model is to provide a waterproof prefabricated roof connection structure to solve the above problems, as detailed below.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] This utility model provides a waterproof prefabricated roof connection structure, including a connecting base frame, a roof base frame, and several roof panels. The upper surface of the connecting base frame is provided with an alignment block to assist in the installation and alignment of the roof base frame. The bottom surface of the roof base frame is provided with a fitting groove adapted to the alignment block. The four sides of the roof base frame are detachably connected to the alignment block by several bolts. Three equally divided inverted V-shaped roof beams are fixedly connected to the upper surface of the roof base frame. The three inverted V-shaped roof beams are connected to each other by a ridge rod. The two sides of the several roof panels are detachably connected to the inverted V-shaped roof beams by several bolts. A strip waterproof board is detachably installed at the high point joint of two adjacent roof panels.
[0007] Preferably, the number of the alignment blocks is four and they are located around the bottom frame respectively. The cross-section of the alignment block is an isosceles trapezoid, and the number, position and shape of the fitting slots are adapted to the alignment blocks.
[0008] Preferably, the bolted connector includes several through holes around the roof frame, each through hole being into which a bolt is inserted, and the upper surface of the alignment block has several bolt holes threadedly connected to the bolts.
[0009] Preferably, the four corners of the connecting base frame and the four alignment blocks are provided with a number of fixing holes for connecting to the top of the vertical wall of the house, and the fixing holes on the alignment blocks are countersunk.
[0010] Preferably, a sealing ring 1 is fixedly connected to the upper surface of the connecting base frame, and a sealing ring 2 is fixedly connected to the bottom surface of the connecting base frame. There are two sealing rings 1, which are located on both sides of the alignment block respectively.
[0011] Preferably, the inverted V-shaped roof beam in the middle is a wide-body design, and the upper surface of the inclined plates on both sides of the inverted V-shaped roof beam in the middle is provided with a guide groove.
[0012] Preferably, the bolted connector includes two through holes two on both sides of the roof panel. Two internally threaded posts that are inserted into the through holes two are fixedly connected to the inclined plate of each of the two inverted V-shaped roof beams. Each internally threaded post is threaded with a bolt two, and the upper end of the internally threaded post is lower than the upper end of the through hole two.
[0013] Preferably, a U-shaped sealing strip is fixedly connected to the bottom surface of the roof panel, and the U-shaped sealing strip abuts against the inverted V-shaped roof beam and the bottom frame of the roof.
[0014] Preferably, a vertical plate is fixedly connected to the high point of the inverted V-shaped roof beam in the middle, and a fixing pin is fixedly connected to both sides of the vertical plate. Two sleeves that are inserted into the fixing pins are fixedly connected to one end of the strip waterproof board, and the other end of the strip waterproof board is detachably connected to the side wall of the roof panel through a bolt connector.
[0015] Preferably, the bolt connector three includes an ear plate fixedly connected to the end of the strip waterproof board. Both sides of the ear plate are provided with through holes three, and bolts three are inserted into both through holes three. The side wall of the roof panel is provided with bolt holes two that are threadedly connected to the bolts three. The cross section of the strip waterproof board is an inverted V-shaped design adapted to the top docking angle of the roof panel.
[0016] The beneficial effects are:
[0017] The connecting bottom frame can be pre-installed on the upper surface of the building wall through the fixing holes. Then, the roof bottom frame and the inverted V-shaped roof beam are installed. Since the alignment block is located on all four sides and its side walls are sloping, it can automatically guide the fitting groove to fit completely with the alignment block. At this time, sealing ring one and sealing ring two seal the upper and lower sides of the connecting bottom frame respectively. After the roof panel is installed, the U-shaped sealing strip and the inverted V-shaped roof beam abut against the roof bottom frame to seal at three points. Finally, the strip waterproof board is installed to waterproof the top joint of the roof panel. The whole operation process avoids adjusting the hole position and achieves a good waterproof effect after the components are assembled, which improves the installation efficiency. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a split perspective view of the present invention;
[0020] Figure 2 This is a perspective view of the inverted V-shaped roof beam of this utility model;
[0021] Figure 3 This is a bottom perspective view of the roof bottom frame of this utility model;
[0022] Figure 4 This is a bottom perspective view of the connecting base frame of this utility model;
[0023] Figure 5 This is a first split perspective view of the roof panel of this utility model;
[0024] Figure 6 This is a second split perspective view of the roof panel of this utility model;
[0025] Figure 7 This is a bottom-view perspective view of the roof panel of this utility model.
[0026] The annotations in the attached figures are explained as follows:
[0027] 1. Connecting bottom frame; 2. Roof bottom frame; 3. Roof panel; 4. Inverted V-shaped roof beam; 5. Alignment block; 6. Fitting groove; 7. Bolt connector one; 701. Through hole one; 702. Bolt one; 703. Bolt hole one; 8. Fixing hole; 9. Sealing ring one; 10. Sealing ring two; 11. Internal threaded post; 12. Through hole two; 13. Bolt two; 14. Strip waterproof membrane; 15. Vertical plate; 16. Fixing pin; 17. Insert sleeve; 18. Ear plate; 19. Bolt three; 20. Bolt hole two; 21. Guide channel; 22. U-shaped sealing strip; 23. Through hole three. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0029] See Figures 1-7 As shown, this utility model provides a waterproof prefabricated roof connection structure, including a connecting base frame 1, a roof base frame 2, and several roof panels 3. The upper surface of the connecting base frame 1 is provided with an alignment block 5 to assist in the installation and alignment of the roof base frame 2. The bottom surface of the roof base frame 2 is provided with a fitting groove 6 that matches the alignment block 5. The four sides of the roof base frame 2 are detachably connected to the alignment block 5 by several bolt connectors 7. Three equally divided inverted V-shaped roof beams 4 are fixedly connected to the upper surface of the roof base frame 2. The three inverted V-shaped roof beams 4 are connected by a ridge rod. The two sides of the several roof panels 3 are detachably connected to the inverted V-shaped roof beams 4 by several bolt connectors 2. A strip waterproof board 14 can be detachably installed at the high point joint of two adjacent roof panels 3. Protective boards can be installed on the outer sides of the inverted V-shaped roof beams 4 at both ends to prevent rainwater from seeping in.
[0030] As an optional implementation, there are four alignment blocks 5 located around the connecting base frame 1. The cross-section of the alignment block 5 is an isosceles trapezoid, and the number, position and shape of the fitting grooves 6 are adapted to the alignment blocks 5. When the roof base frame 2 is placed on the upper surface of the connecting base frame 1, since the alignment blocks 5 are located around the perimeter and their side walls are inclined, they can be automatically guided to fit the fitting grooves 6 completely with the alignment blocks 5, thereby improving installation efficiency.
[0031] As an optional implementation, the bolt connector 7 includes several through holes 701 formed around the roof bottom frame 2, and a bolt 702 is inserted into each through hole 701. The upper surface of the alignment block 5 is provided with several bolt holes 703 that are threadedly connected to the bolts 702. When the through holes 701 and the bolt holes 703 are aligned, the bolts 702 are inserted into the through holes 701 and rotated in the bolt holes 703 to complete the installation and fixation of the roof bottom frame 2.
[0032] Furthermore, the four corners of the connecting base frame 1 and the four alignment blocks 5 are provided with a number of fixing holes 8 for connecting with the top of the vertical wall of the house. The fixing holes 8 on the alignment blocks 5 are countersunk. The fixing holes 8 can fix the connecting base frame 1 to the upper surface of the vertical wall of the house. At the same time, the countersunk design of the fixing holes 8 on the alignment blocks 5 can make the alignment blocks 5 completely fit into the fitting groove 6, avoiding the situation where the sealing ring 9 is not sealed properly due to the protrusion.
[0033] Reference Figure 1 As shown in Figure 4, a sealing ring 9 is fixedly connected to the upper surface of the connecting base frame 1, and a sealing ring 10 is fixedly connected to the bottom surface of the connecting base frame 1. There are two sealing rings 9, which are located on both sides of the alignment block 5. When the connecting base frame 1 is installed on the upper part of the house wall, the sealing ring 10 on the bottom surface of the connecting base frame 1 comes into close contact with the upper surface of the house wall to complete the initial seal. When the roof base frame 2 is installed on the upper part of the connecting base frame 1, the sealing ring 9 abuts against the bottom surface of the roof base frame 2 to perform two seals.
[0034] Reference Figure 6 As shown, the central inverted V-shaped roof beam 4 is a wide-body design, and the upper surface of the inclined plates on both sides of the central inverted V-shaped roof beam 4 is provided with a guide channel 21. After the central inverted V-shaped roof beam 4 is widened, it is convenient to install and place the roof panels 3 on both sides, providing effective support for the placement of the roof panels 3. The design of the guide channel 21 allows the water that gathers between the two roof panels 3 to fall into the guide channel 21 under the action of gravity, avoiding accumulation at the joint and effectively waterproofing.
[0035] Reference Figure 5 As shown in Figure 7, the bolted connector 2 includes two through holes 12 on both sides of the roof panel 3. Two internally threaded posts 11, which are inserted into the through holes 12, are fixedly connected to the inclined plates of each pair of inverted V-shaped roof beams 4. Each internally threaded post 11 is threaded with a bolt 13, and the upper end of the internally threaded post 11 is lower than the upper end of the through hole 12. A U-shaped sealing strip 22 is fixedly connected to the bottom surface of the roof panel 3, and the U-shaped sealing strip 22 abuts against the inverted V-shaped roof beam 4 and the roof bottom frame 2. The roof panel 3 is hoisted so that the through holes 12 are fitted onto... On the internally threaded post 11, the bolt 2 13 is rotated and installed in the internally threaded post 11 to complete the installation of the roof panel 3. At this time, the U-shaped sealing strip 22 and the inverted V-shaped roof beam 4 abut against the roof bottom frame 2 to seal at three points. The design of the internally threaded post 11 makes the installation of the roof panel 3 more accurate and quick. The upper end of the internally threaded post 11 is lower than the through hole 2 12, which can drive the roof panel 3 to press down when the bolt 2 13 is rotated, so that the U-shaped sealing strip 22 and the inverted V-shaped roof beam 4 are in close contact with the roof bottom frame 2, achieving a good waterproof effect.
[0036] Reference Figure 5-6 As shown, a vertical plate 15 is fixedly connected to the high point of the inverted V-shaped roof beam 4 in the middle. Fixed pins 16 are fixedly connected to both sides of the vertical plate 15. Two inserts 17, which are inserted into the fixed pins 16, are fixedly connected to one end of the strip-shaped waterproof membrane 14. The other end of the strip-shaped waterproof membrane 14 is detachably connected to the side wall of the roof panel 3 via bolt connector three. Bolt connector three includes ear plates 18 fixedly connected to the end of the strip-shaped waterproof membrane 14. Through holes 23 are opened on both sides of the ear plates 18, and bolts 19 are inserted into each of the two through holes 23. A bolt is opened on the side wall of the roof panel 3. There is a bolt hole 20 for threaded connection with bolt 3 19. The cross section of the strip waterproof membrane 14 is an inverted V-shaped design adapted to the top joint angle of the roof panel 3. By placing the strip waterproof membrane 14 at the top joint of two adjacent roof panels 3, inserting the sleeve 17 onto the fixing pin 16, and then inserting bolt 3 19 into the bolt hole 20 of the through hole 23 and rotating it, both ends of the strip waterproof membrane 14 are fixed, completing the installation of the strip waterproof membrane 14 and achieving four-way sealing. The setting of the strip waterproof membrane 14 can prevent rainwater from leaking from the top joint of the two roof panels 3.
[0037] The working principle of this utility model:
[0038] In use, first, hoist the connecting base frame 1 onto the top of the building wall and place it neatly (the top surface of the building wall must be flat). Then, according to the fixing holes 8 on the connecting base frame 1, drive expansion bolts into the top surface of the building wall. At this time, the sealing ring 10 on the bottom surface of the connecting base frame 1 will be in close contact with the top surface of the building wall to complete the initial seal. Then, hoist the roof base frame 2 and the inverted V-shaped roof beam 4. When the roof base frame 2 is placed on the upper surface of the connecting base frame 1, since the alignment block 5 is located around the perimeter and its side wall is sloping, it can automatically guide the fitting groove 6 to fully fit with the alignment block 5. At this time, the through hole 701 and the bolt hole 703 will automatically align. Insert the bolt 702 into the through hole 701 and into the bolt hole. Rotate the 703 to complete the installation and fixation of the roof bottom frame 2. At this time, the sealing ring 9 abuts against the bottom surface of the roof bottom frame 2 to seal at two points. Then, hoist the roof panel 3 so that the perforation 12 is fitted onto the internal threaded post 11. Then, rotate the bolt 13 into the internal threaded post 11 to complete the installation of the roof panel 3. At this time, the U-shaped sealing strip 22 and the inverted V-shaped roof beam 4 abut against the roof bottom frame 2 to seal at three points. Finally, place the strip waterproof membrane 14 at the top joint of the two adjacent roof panels 3, insert the sleeve 17 into the fixing pin 16, and then insert the bolt 19 into the bolt hole 20 of the perforation 23 and rotate to complete the installation of the strip waterproof membrane 14, achieving four-point sealing.
[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A waterproof prefabricated roof connection structure, characterized in that: The system includes a connecting base frame (1), a roof base frame (2), and several roof panels (3). The upper surface of the connecting base frame (1) is provided with an alignment block (5) to assist in the installation and alignment of the roof base frame (2). The bottom surface of the roof base frame (2) is provided with a fitting groove (6) that matches the alignment block (5). The four sides of the roof base frame (2) are detachably connected to the alignment block (5) by several bolt connectors (7). The upper surface of the roof base frame (2) is fixedly connected with three equally divided inverted V-shaped roof beams (4). The three inverted V-shaped roof beams (4) are connected to each other by a ridge rod. The two sides of the several roof panels (3) are detachably connected to the inverted V-shaped roof beams (4) by several bolt connectors. A strip waterproof board (14) is detachably installed at the high point joint of two adjacent roof panels (3).
2. The waterproof prefabricated roof connection structure according to claim 1, characterized in that: The number of alignment blocks (5) is four and they are located around the bottom frame (1). The cross section of the alignment block (5) is an isosceles trapezoid, and the number, position and shape of the fitting grooves (6) are adapted to the alignment block (5).
3. The waterproof prefabricated roof connection structure according to claim 1, characterized in that: The bolt connector (7) includes several through holes (701) around the roof bottom frame (2), and each through hole (701) is fitted with a bolt (702). The upper surface of the alignment block (5) is provided with several bolt holes (703) that are threadedly connected to the bolts (702).
4. A waterproof prefabricated roof connection structure according to claim 2, characterized in that: The four corners of the connecting base frame (1) and the four alignment blocks (5) are provided with a number of fixing holes (8) for connecting with the top of the vertical wall of the house, and the fixing holes (8) on the alignment blocks (5) are countersunk.
5. A waterproof prefabricated roof connection structure according to claim 1, characterized in that: A sealing ring one (9) is fixedly connected to the upper surface of the connecting bottom frame (1), and a sealing ring two (10) is fixedly connected to the bottom surface of the connecting bottom frame (1). There are two sealing rings one (9), which are located on both sides of the alignment block (5).
6. A waterproof prefabricated roof connection structure according to claim 1, characterized in that: The inverted V-shaped roof beam (4) in the middle section is designed with a wide body, and the upper surface of the inclined plates on both sides of the inverted V-shaped roof beam (4) in the middle section is provided with a guide groove (21).
7. A waterproof prefabricated roof connection structure according to claim 1, characterized in that: The bolted connector includes two through holes (12) on both sides of the roof panel (3). Two internally threaded posts (11) that are inserted into the through holes (12) are fixedly connected to the inclined plates of each of the two inverted V-shaped roof beams (4). Each internally threaded post (11) is threaded with a bolt (13), and the upper end of the internally threaded post (11) is lower than the upper end of the through hole (12).
8. A waterproof prefabricated roof connection structure according to claim 1, characterized in that: The bottom surface of the roof panel (3) is fixedly connected with a U-shaped sealing strip (22), and the U-shaped sealing strip (22) abuts against the inverted V-shaped roof beam (4) and the roof bottom frame (2).
9. A waterproof prefabricated roof connection structure according to claim 1, characterized in that: A vertical plate (15) is fixedly connected to the high point of the inverted V-shaped roof beam (4) in the middle. Both sides of the vertical plate (15) are fixedly connected to fixing pins (16). One end of the strip waterproof board (14) is fixedly connected to two inserts (17) that are inserted into the fixing pins (16). The other end of the strip waterproof board (14) is detachably connected to the side wall of the roof panel (3) through bolt connectors.
10. A waterproof prefabricated roof connection structure according to claim 9, characterized in that: The bolted connector includes an ear plate (18) fixedly connected to the end of the strip waterproof membrane (14). Both sides of the ear plate (18) are provided with through holes (23). Bolts (19) are inserted into both through holes (23). The side wall of the roof panel (3) is provided with bolt holes (20) that are threadedly connected to the bolts (19). The cross section of the strip waterproof membrane (14) is an inverted V-shaped design that matches the top abutment angle of the roof panel (3).