A steel skylight frame with high screw fixing strength and its screw installation method

Abstract

The present invention relates to the technical field of skylight processing, and specifically to a steel skylight frame with high screw fixing strength and its screw installation method. It includes a first frame and a second frame. Connection blocks are arranged at both ends of the first frame, connection grooves are arranged on the inner sides of both ends of the second frame, a first through groove is opened on the connection block, a second through groove is arranged in the connection groove, a first threaded hole is arranged on the upper end surface of the connection groove, and a first screw fixing mechanism is penetrated through the first through groove, the second through groove and the first threaded hole; A support frame is connected between the two second frames, sliding blocks are arranged at both ends of the support frame, a sliding groove is arranged on the inner side surface of the second frame, third through grooves are opened in both the sliding block and the sliding groove, a plurality of second threaded holes are arranged on the upper end surface of the second frame, and a second screw fixing mechanism is penetrated through the third through groove and one of the second threaded holes, and a strengthening fixing mechanism is also arranged in the connection block. The present invention facilitates the assembly or disassembly of the skylight frame and can be disassembled and installed repeatedly.

Description

Technical Field

[0001] The present invention relates to a skylight frame, in particular to a steel skylight frame with high screw fixing strength and its screw installation method, belonging to the technical field of skylight processing. Background Art

[0002] When constructing a steel structure factory building, due to the requirements of usage functions and the environment, it is relatively common to set up daylighting skylights or ventilation skylights on the roof of the newly built factory building. The ventilation skylight is to erect components such as a skylight frame, a wind baffle support, and a wind baffle on the roof of the factory building, which has both the functions of daylighting and ventilation. The ventilation skylight mostly relies on the temperature difference, air pressure difference, and external wind pressure between indoors and outdoors to achieve air convection.

[0003] Currently, when the existing skylight frames are fixedly installed, welding installation and fixation are adopted. Sometimes, inaccurate welding may occur during the welding process of the skylight frame. If this situation occurs, it is necessary to cut and remove the skylight frame, which is rather troublesome.

[0004] Therefore, it is urgent to improve the skylight frame to solve the above existing problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a steel skylight frame with high screw fixing strength and its screw installation method, which improves the convenience of assembling the skylight frame and is also convenient for disassembly. It will not have the situation that the fixed connection is inaccurate and not convenient for timely correction as in the traditional welding fixation method.

[0006] To achieve the above purpose, the main technical solutions adopted by the present invention include:

[0007] A steel skylight frame with high screw fixing strength includes a first frame and a second frame. There are two of each of the first frame and the second frame, which are symmetrically arranged. Connection blocks are provided at both ends of the first frame, and connection grooves are provided on the inner sides of both ends of the second frame. A first through groove is opened on the connection block, a second through groove is provided in the connection groove, and a first threaded hole is provided on the upper end surface of the connection groove. A first screw fixing mechanism is connected through the first through groove, the second through groove, and the first threaded hole.

[0008] A support frame is connected between the two second frames. Sliding blocks are provided at both ends of the support frame, and a sliding groove is provided on the inner side of the second frame. Third through grooves are opened in both the sliding block and the sliding groove. A plurality of second threaded holes are provided on the upper end surface of the second frame. A second screw fixing mechanism is connected through the third through groove and one of the second threaded holes. An enhanced fixing mechanism is also provided in the connection block.

[0009] Preferably, the connecting block is snapped into the connecting groove, the first through groove, the second through groove and the first threaded hole communicate with each other. The first screw fixing mechanism includes a first cubic connecting block and a first threaded rod. The first cubic connecting block is snapped into the first through groove and the second through groove. A third threaded hole is provided on the upper end surface of the first cubic connecting block. The third threaded hole communicates with the first threaded hole. The first threaded hole and the third threaded hole are connected through the first threaded rod penetrating through them.

[0010] Preferably, fourth threaded holes are provided on the outer sides of both ends of the second frame. A fifth threaded hole is further provided on the outer side of the connecting block. The fifth threaded hole communicates with the fourth threaded hole. A second threaded rod is screwed into the fourth threaded hole. The fifth threaded hole and the fourth threaded hole are connected through the second threaded rod penetrating through them.

[0011] Preferably, the support frame is slidably connected to the chute through the slider. One of the second threaded holes communicates with the two third through grooves. The second screw fixing mechanism includes a second cubic connecting block and a third threaded rod. The second cubic connecting block is snapped into the two third through grooves. A sixth threaded hole is provided on the upper end surface of the second cubic connecting block. The sixth threaded hole communicates with one of the second threaded holes. The sixth threaded hole and one of the second threaded holes are connected through the third threaded rod penetrating through them.

[0012] Preferably, seventh threaded holes are further provided on both end surfaces of the second frame. The connecting groove communicates with the seventh threaded hole. A slot is provided on one side of the connecting groove away from the seventh threaded hole. The slot and the seventh threaded hole are horizontally arranged. A fourth threaded rod is screwed into the seventh threaded hole.

[0013] Preferably, the strengthening and fixing mechanism includes a cavity structure and an insertion rod provided inside the connecting block. The cavity structure is located in the middle part of the connecting block. A first sliding groove and a second sliding groove are respectively provided on both sides of the connecting block. Second sliding grooves are provided on both sides of the inner wall of the cavity structure. Second sliders are provided on both sides of the insertion rod. One end of the insertion rod extends to the outside of the second sliding groove. The side surface of the second slider close to the second sliding groove fits with the second sliding groove. A compression spring is connected to the side surface of the second slider away from the second sliding groove. One end of the insertion rod close to the second sliding groove has an arc surface structure.

[0014] Preferably, a micro-groove is provided on the outer side of the connecting groove. A circular groove is provided on the outer side of each threaded hole. The depth of each circular groove can hide the upper end of each threaded rod.

[0015] Preferably, the upper surfaces of the second through groove and the third through groove are provided with first adsorption magnets, and the upper surfaces of the first cube connecting block and the second cube connecting block are provided with second adsorption magnets that attract each other with the first adsorption magnets.

[0016] Preferably, the upper surfaces of the first frame, the second frame, and the support frame are all provided with arc-shaped drainage grooves.

[0017] A screw installation method for a steel skylight frame with high screw fixing strength includes the following steps:

[0018] S1: Snap two symmetrically arranged first frames into the connection groove of one of the second frames through the connection block. During the process of the connection block snapping into the connection groove, the insertion rod is squeezed and will shrink into the second sliding groove. When the connection block is completely snapped into the connection groove, the second sliding groove communicates with the seventh threaded hole, and the insertion rod is no longer under pressure. The insertion rod is pushed into the seventh threaded hole through the arrangement of the compression spring. Then, snap the support frame into the chute of the second frame through the sliding block. Then, snap the other ends of the two symmetrically arranged first frames into the connection groove of the other second frame. The snapping steps are the same as the above snapping steps, thereby realizing the preliminary fixation of the two first frames, the two second frames, and the support frame.

[0019] S2: Then insert the first cube connecting block into the first through groove and the second through groove. At this time, the third threaded hole communicates with the first threaded hole, and at the same time, the fifth threaded hole also communicates with the fourth threaded hole. Then, use the first threaded rod to penetrate and connect the third threaded hole and the first threaded hole, use the second threaded rod to penetrate and connect the fifth threaded hole and the fourth threaded hole. Then, rotate the fourth threaded rod. As the fourth threaded rod rotates inward in the seventh threaded hole, it pushes the insertion rod into the slot, thereby completing the fixation of the first frame and the second frame.

[0020] S3: Slide the support frame to a suitable position, then insert the second cube connecting block into the third through groove. At this time, the sixth threaded hole communicates with the second threaded hole, and use the third threaded rod to penetrate and connect the sixth threaded hole and the second threaded hole, thereby realizing the fixation of the support frame, and finally completing the fixed assembly of the skylight frame.

[0021] The present invention has at least the following beneficial effects:

[0022] 1. By inserting the connecting block into the connecting groove, then inserting the first cubic connecting block into the first through groove and the second through groove, and then using the first threaded rod to penetrate and connect the third threaded hole and the first threaded hole, and using the second threaded rod to penetrate and connect the fifth threaded hole and the fourth threaded hole, the fixation of the first frame and the second frame is completed.

[0023] 2. By utilizing the setting of the strengthening and fixing mechanism, during the process of the connecting block entering the connecting groove, the insertion rod is squeezed and will shrink into the second sliding groove. When the connecting block is completely inserted into the connecting groove, the second sliding groove communicates with the seventh threaded hole, and the insertion rod is no longer under pressure. Through the setting of the compression spring, the insertion rod is pushed into the seventh threaded hole. Finally, rotate the fourth threaded rod. As the fourth threaded rod rotates inward in the seventh threaded hole, the insertion rod is thus pushed into the insertion slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0025] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 is a three-dimensional structural schematic diagram of the second frame of the present invention;

[0027] Figure 3 is a three-dimensional structural schematic diagram of the first frame of the present invention;

[0028] Figure 4 is a three-dimensional structural schematic diagram of the support frame of the present invention;

[0029] Figure 5 is a three-dimensional structural schematic diagram of the first screw fixing mechanism of the present invention;

[0030] Figure 6 is a three-dimensional structural schematic diagram of the second screw fixing mechanism of the present invention

[0031] Figure 7 is a cross-sectional view of the strengthening and fixing mechanism of the present invention

[0032] Figure 8 is a partial cross-sectional view of the first frame of the present invention

[0033] Figure 9 is a cross-sectional view of the frame connection of the present invention;

[0034] Figure 10 is a cross-sectional view of the frame connection of the present invention from another perspective;

[0035] Figure 11Cross-sectional view of the support frame connection of the present invention;

[0036] Figure 12 Second frame cross-sectional view of the present invention;

[0037] Figure 13 Partial cross-sectional view of the second frame of the present invention.

[0038] In the figure, 1 - first frame, 2 - second frame, 3 - connecting block, 4 - connecting groove, 5 - first through groove, 6 - second through groove, 7 - first threaded hole, 8 - first screw fixing mechanism, 801 - first cubic connecting block, 802 - first threaded rod, 9 - support frame, 10 - strengthening fixing mechanism, 11 - sliding block, 12 - sliding groove, 13 - third through groove, 14 - second threaded hole, 15 - second screw fixing mechanism, 16 - third threaded hole, 17 - fourth threaded hole, 18 - fifth threaded hole, 19 - second threaded rod, 20 - second cubic connecting block, 21 - third threaded rod, 22 - sixth threaded hole, 23 - seventh threaded hole, 24 - slot, 25 - cavity structure, 26 - inserting rod, 27 - first sliding groove, 28 - second sliding groove, 29 - second sliding block, 30 - second sliding groove, 31 - compression spring, 32 - fourth threaded rod, 33 - micro groove, 34 - circular groove, 35 - first adsorption magnet, 36 - second adsorption magnet, 37 - arc-shaped drainage groove. Detailed implementation mode

[0039] The following will cooperate with the drawings and embodiments to detail the implementation mode of the present application, so as to fully understand how the present application uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0040] As Figures 1 - 13 shown, the steel skylight frame with high screw fixing strength provided in this embodiment includes a first frame 1 and a second frame 2. There are two first frames 1 and two second frames 2 symmetrically arranged. Connecting blocks 3 are provided at both ends of the first frame 1. Connecting grooves 4 are provided on the inner sides of both ends of the second frame 2. A first through groove 5 is opened on the connecting block 3. A second through groove 6 is provided in the connecting groove 4. A first threaded hole 7 is provided on the upper end surface of the connecting groove 4. A first screw fixing mechanism 8 is penetrated through the first through groove 5, the second through groove 6 and the first threaded hole 7. The connecting block 3 is snapped into the connecting groove 4. The first through groove 5, the second through groove 6 and the first threaded hole 7 are communicated. The first screw fixing mechanism 8 includes a first cubic connecting block 801 and a first threaded rod 802. The first cubic connecting block 801 is snapped into the first through groove 5 and the second through groove 6. A third threaded hole 16 is provided on the upper end surface of the first cubic connecting block 801. The third threaded hole 16 is communicated with the first threaded hole 7. The first threaded hole 7 and the third threaded hole 16 are connected through the first threaded rod 802 in a penetrating manner;

[0041] A support frame 9 is connected between two second frames 2. Sliding blocks 11 are arranged at both ends of the support frame 9. A sliding groove 12 is arranged on the inner side surface of the second frame 2. Third through grooves 13 are formed inside both the sliding block 11 and the sliding groove 12. A plurality of second threaded holes 14 are arranged on the upper end surface of the second frame 2. A second screw fixing mechanism 15 is connected through the third through groove 13 and one of the second threaded holes 14. The support frame 9 is slidably connected to the sliding groove 12 through the sliding block 11. One of the second threaded holes 14 communicates with the two third through grooves 13. The second screw fixing mechanism 15 includes a second cube connecting block 20 and a third threaded rod 21. The second cube connecting block 20 is clamped into the two third through grooves 13. A sixth threaded hole 22 is formed on the upper end surface of the second cube connecting block 20. The sixth threaded hole 22 communicates with one of the second threaded holes 14. The sixth threaded hole 22 and one of the second threaded holes 14 are connected through the third threaded rod 21 in a penetrating manner;

[0042] A strengthening fixing mechanism 10 is further arranged in the connecting block 3. Seventh threaded holes 23 are further arranged on both end surfaces of the second frame 2. The connecting groove 4 communicates with the seventh threaded hole 23. A slot 24 is arranged on one side of the connecting groove 4 away from the seventh threaded hole 23. The slot 24 and the seventh threaded hole 23 are horizontally arranged. A fourth threaded rod 32 is screwed and connected in the seventh threaded hole 23. The strengthening fixing mechanism 10 includes a cavity structure 25 arranged inside the connecting block 3 and a plug rod 26. The cavity structure 25 is located in the middle part of the connecting block 3. A first sliding groove 27 and a second sliding groove 30 are respectively arranged on both sides of the connecting block 3. Second sliding grooves 28 are arranged on both inner walls of the cavity structure 25. Second sliding blocks 29 are arranged on both sides of the plug rod 26. The arrangement of the second sliding grooves 28 and the second sliding blocks 29 enables the plug rod 26 to have a sliding effect inside the cavity structure 25. One end of the plug rod 26 extends to the outside of the second sliding groove 30. The side surface of the second sliding block 29 close to the second sliding groove 30 fits with the second sliding groove 28. A compression spring 31 is connected to the side surface of the second sliding block 29 away from the second sliding groove 30. One end of the plug rod 26 close to the second sliding groove 30 is of an arc surface structure. The arrangement of the compression spring 31 enables the plug rod 26 to have an elastic effect. The arrangement of the arc surface structure facilitates the plug rod 26 to enter the connecting groove 4. By rotating the fourth threaded rod 32, as the fourth threaded rod 32 rotates inward in the seventh threaded hole 23, the plug rod 26 is pushed into the slot 24, thereby further improving the fixing effect between the first frame 1 and the second frame 2.

[0043] In this embodiment, as Figure 10 and Figure 13As shown in the figure, fourth threaded holes 17 are provided on the outer sides of both ends of the second frame 2. A fifth threaded hole 18 is further provided on the outer side of the connecting block 3. The fifth threaded hole 18 communicates with the fourth threaded hole 17. A second threaded rod 19 is screwed and connected in the fourth threaded hole 17. The fifth threaded hole 18 and the fourth threaded hole 17 are connected through the second threaded rod 19 penetrating through. By using the second threaded rod 19 to penetrate and connect the fifth threaded hole 18 and the fourth threaded hole 17, the connection and fixation effect between the first frame 1 and the second frame 2 can be further improved.

[0044] In this embodiment, as Figure 1 shown, a micro-groove 33 is provided on the outer side of the connecting groove 4. A circular groove 34 is provided on the outer side of each threaded hole. The depth of each circular groove 34 can hide the upper end of each threaded rod. After the threaded rod is completely connected to the threaded hole, the upper end of the threaded rod is hidden by the setting of the circular groove 34, so that the threaded rod does not protrude from the circular groove 34, thereby further improving the aesthetics of the skylight. The setting of the micro-groove 33 facilitates the insertion rod 26 to be inserted into the connecting groove 4.

[0045] In this embodiment, as Figure 9 and Figure 11 shown, first adsorption magnets 35 are provided on the upper end surfaces of the second through groove 6 and the third through groove 13. Second adsorption magnets 36 that attract each other with the first adsorption magnets are provided on the upper end surfaces of the first cube connecting block 801 and the second cube connecting block 20. Through the setting of the mutually attracting first adsorption magnets 35 and second adsorption magnets 36, an adsorption and fixation effect can be achieved when the first cube connecting block 801 and the second cube connecting block 20 are snapped in, and there is no need to always support with hands when screwing, thereby improving the convenience of assembling the skylight.

[0046] In this embodiment, as Figure 1 shown, arc-shaped drainage grooves 37 are provided on the upper end surfaces of the first frame 1, the second frame 2, and the support frame 9. The arc-shaped drainage grooves 37 are used for draining water to prevent rainwater from accumulating.

[0047] A method for installing screws of a steel skylight frame with high screw fixing strength includes the following steps:

[0048] S1: Insert the two symmetrically arranged first frames 1 into the connection groove 4 of one of the second frames 2 through the connection block 3. During the process of inserting the connection block 3 into the connection groove 4, the insertion rod 26 is squeezed and will shrink into the inner part of the second sliding groove 30. After the connection block 3 is completely inserted into the connection groove 4, the second sliding groove 30 communicates with the seventh threaded hole 23, and the insertion rod 26 is no longer under pressure. Through the arrangement of the compression spring 31, the insertion rod 26 is pushed into the seventh threaded hole 23. Then, engage the support frame 9 with the sliding block 11 and the sliding groove 12 of the second frame 2. Then, insert the other ends of the two symmetrically arranged first frames 1 into the connection groove 4 of the other second frame 2. The engagement steps are the same as the above-mentioned engagement steps, thus realizing the preliminary fixation of the two first frames 1, the two second frames 2, and the support frame 9.

[0049] S2: Then insert the first cube connection block 801 into the first through groove 5 and the second through groove 6. At this time, the third threaded hole 16 communicates with the first threaded hole 7, and at the same time, the fifth threaded hole 18 also communicates with the fourth threaded hole 17. Then use the first threaded rod 802 to penetrate and connect the third threaded hole 16 and the first threaded hole 7, and use the second threaded rod 19 to penetrate and connect the fifth threaded hole 18 and the fourth threaded hole 17. Then rotate the fourth threaded rod 32. As the fourth threaded rod 32 rotates inward in the seventh threaded hole 23, it pushes the insertion rod 26 into the insertion slot 24, thus completing the fixation of the first frame 1 and the second frame 2.

[0050] S3: Slide the support frame 9 to a suitable position, and then insert the second cube connection block 20 into the third through groove 13. At this time, the sixth threaded hole 22 communicates with the second threaded hole 14. Use the third threaded rod 21 to penetrate and connect the sixth threaded hole 22 and the second threaded hole 14, thus realizing the fixation of the support frame 9, and finally completing the fixed assembly of the skylight frame.

[0051] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As mentioned throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve technical problems within a certain error range and basically achieve the technical effect.

[0052] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the commodity or system comprising the element.

[0053] The above description shows and describes several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in the relevant field. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A steel skylight frame with high screw fixing strength, comprising a first frame (1) and a second frame (2), characterized in that, There are two of the first frames (1) and the second frames (2) symmetrically arranged. Connecting blocks (3) are arranged at both ends of the first frame (1). Connecting grooves (4) are arranged on the inner sides of both ends of the second frame (2). A first through groove (5) is formed in the connecting block (3). A second through groove (6) is arranged in the connecting groove (4). A first threaded hole (7) is arranged on the upper end face of the connecting groove (4). A first screw fixing mechanism (8) is inserted through the first through groove (5), the second through groove (6) and the first threaded hole (7). A support frame (9) is connected between the two second frames (2). Sliding blocks (11) are arranged at both ends of the support frame (9). A sliding groove (12) is arranged on the inner side of the second frame (2). Third through grooves (13) are formed inside the sliding block (11) and the sliding groove (12). A plurality of second threaded holes (14) are arranged on the upper end face of the second frame (2). A second screw fixing mechanism (15) is inserted through the third through groove (13) and one of the second threaded holes (14). A strengthening fixing mechanism (10) is further arranged in the connecting block (3). The connecting block (3) is snapped into the connecting groove (4). The first through groove (5), the second through groove (6) and the first threaded hole (7) are communicated. The first screw fixing mechanism (8) includes a first cubic connecting block (801) and a first threaded rod (802). The first cubic connecting block (801) is snapped into the first through groove (5) and the second through groove (6). A third threaded hole (16) is arranged on the upper end face of the first cubic connecting block (801). The third threaded hole (16) is communicated with the first threaded hole (7). The first threaded hole (7) and the third threaded hole (16) are connected through the first threaded rod (802). A micro groove (33) is arranged on the outer side of the connecting groove (4). A circular groove (34) is arranged on the outer side of each threaded hole. The depth of each circular groove (34) can hide the upper end of each threaded rod.

2. The steel skylight frame with high screw fixing strength according to claim 1, characterized in that: Fourth threaded holes (17) are arranged on the outer sides of both ends of the second frame (2). A fifth threaded hole (18) is further arranged on the outer side of the connecting block (3). The fifth threaded hole (18) is communicated with the fourth threaded hole (17). A second threaded rod (19) is screwed into the fourth threaded hole (17). The fifth threaded hole (18) and the fourth threaded hole (17) are connected through the second threaded rod (19).

3. The steel skylight frame with high screw fixing strength according to claim 2, characterized in that: The support frame (9) is slidably connected to the chute (12) through the slider (11). One of the second threaded holes (14) communicates with the two third through grooves (13). The second screw fixing mechanism (15) includes a second square body connecting block (20) and a third threaded rod (21). The second square body connecting block (20) is clamped into the two third through grooves (13). A sixth threaded hole (22) is formed in the upper end surface of the second square body connecting block (20). The sixth threaded hole (22) communicates with one of the second threaded holes (14). The sixth threaded hole (22) and one of the second threaded holes (14) are connected through the third threaded rod (21) passing through.

4. The steel skylight frame with high screw fixing strength according to claim 3, characterized in that: Seventh threaded holes (23) are further provided on both end faces of the second frame (2). The connection groove (4) communicates with the seventh threaded holes (23). A slot (24) is provided on one side of the connection groove (4) away from the seventh threaded holes (23). The slot (24) and the seventh threaded holes (23) are horizontally arranged. A fourth threaded rod (32) is screwed into the seventh threaded holes (23).

5. The steel skylight frame with high screw fixing strength according to claim 4, characterized in that: The strengthening and fixing mechanism (10) includes a cavity structure (25) provided inside the connecting block (3) and a plug rod (26). The cavity structure (25) is located in the middle part of the connecting block (3). A first sliding groove (27) and a second sliding groove (30) are respectively provided on both sides of the connecting block (3). Second sliding grooves (28) are provided on both sides of the inner wall of the cavity structure (25). Second sliders (29) are provided on both sides of the plug rod (26). One end of the plug rod (26) extends to the outside of the second sliding groove (30). The side surface of the second slider (29) close to the second sliding groove (30) is attached to the second sliding groove (28). A compression spring (31) is connected to the side surface of the second slider (29) away from the second sliding groove (30). One end of the plug rod (26) close to the second sliding groove (30) has an arc surface structure.

6. The steel skylight frame with high screw fixing strength according to claim 5, characterized in that: First adsorption magnets (35) are provided on the upper end surfaces of the second through groove (6) and the third through groove (13). Second adsorption magnets (36) that attract the first adsorption magnets are provided on the upper end surfaces of the first square body connecting block (801) and the second square body connecting block (20).

7. The steel skylight frame with high screw fixing strength according to claim 6, characterized in that: Arc-shaped drainage grooves (37) are formed on the upper end surfaces of the first frame (1), the second frame (2), and the support frame (9).

8. A screw installation method for the steel skylight frame with high screw fixing strength as described in claim 7, characterized in that: Including the following steps: S1: Snap two symmetrically arranged first frames (1) into the connection groove (4) of one of the second frames (2) through the connection block (3). During the process of the connection block (3) being snapped into the connection groove (4), the insertion rod (26) is squeezed and will contract into the interior of the second sliding groove (30). After the connection block (3) is completely snapped into the connection groove (4), the second sliding groove (30) communicates with the seventh threaded hole (23), and the insertion rod (26) is no longer under pressure. The insertion rod (26) is pushed into the seventh threaded hole (23) by the compression spring (31). Then, snap the support frame (9) into the sliding groove (12) of the second frame (2) through the sliding block (11). Then, snap the other ends of the two symmetrically arranged first frames (1) into the connection groove (4) of the other second frame (2). The snapping steps are the same as the above snapping steps, thereby achieving the preliminary fixation of the two first frames (1), the two second frames (2), and the support frame (9). S2: Then insert the first cubic connection block (801) into the first through groove (5) and the second through groove (6). At this time, the third threaded hole (16) communicates with the first threaded hole (7), and at the same time, the fifth threaded hole (18) also communicates with the fourth threaded hole (17). Then, use the first threaded rod (802) to penetrate and connect the third threaded hole (16) and the first threaded hole (7), and use the second threaded rod (19) to penetrate and connect the fifth threaded hole (18) and the fourth threaded hole (17). Then, rotate the fourth threaded rod (32). As the fourth threaded rod (32) rotates inward in the seventh threaded hole (23), it pushes the insertion rod (26) into the slot (24), thereby completing the fixation of the first frame (1) and the second frame (2). S3: Slide the support frame (9) to a suitable position, and then insert the second cubic connection block (20) into the third through groove (13). At this time, the sixth threaded hole (22) communicates with the second threaded hole (14). Use the third threaded rod (21) to penetrate and connect the sixth threaded hole (22) and the second threaded hole (14), thereby achieving the fixation of the support frame (9), and finally completing the fixed assembly of the skylight frame.

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