A suspended ceiling joist framework

Abstract

The application discloses a kind of ceiling joist frame structures, belongs to the technical field of joist frame, including main body joist assembly, the both sides of main body joist assembly are provided with installation positioning mechanism, installation positioning mechanism is used for the stable and fast installation of main body joist assembly, the top surface of main body joist assembly is provided with triangular joist frame, the installation positioning mechanism includes positioning screw rod, and the bottom end of positioning screw rod is screw-mounted with threaded rotating rod;In the application, installation positioning mechanism is provided with a matching set, through the design, not only can the clamping of main body joist frame be quickly completed, but also the thickness of the installed main body joist frame is strong in inclusiveness, the application range of the structure is improved, and after installation, the horizontal direction and the vertical direction of the main body joist frame can be automatically and effectively limited, the shaking of the main body joist frame during later use is avoided, the overall stability of the joist frame is ensured, and the practical application effect of the joist frame is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of keel frame technology, and particularly relates to a ceiling keel frame structure. Background Technology

[0002] The keel frame is one of the most common structures in the construction industry. Keel frames are generally divided into fixed keels and movable keels. Fixed keels are roughly half-shaped, while movable keels are basically the same shape as fixed keels, except that the upper end is hooked, and this hook hangs on the upper end of the fixed keel. This type of keel frame facilitates the installation and removal of decorative panels.

[0003] Chinese patent disclosure (CN117027271A) discloses a ceiling keel frame, relating to the field of keel frame technology. It includes a main body base and a lifting mechanism. The main body base has connecting mechanisms on both sides for connection and forming, and the lifting mechanism for overall stable installation is located at the upper center of the main body base. Compared with existing devices, this ceiling keel frame, through the fixed base, allows for fine-tuning of the tilt angle when the keel frame is subjected to pressure after assembly. The movable bracket, fixed base, and sliding plate work together to achieve this. Furthermore, the remaining parts of the lifting mechanism ensure more stable cushioning deformation. Therefore, when the keel frame encounters external vibrations, the frame and mounting bolts are less prone to breakage or loosening, resulting in higher stability and safety after installation. The connecting mechanisms allow for adjustment of the front-to-back position of the frames, and the adjusting mechanisms allow for adjustment of the left-to-right position of the frames. While current keel frames can provide structural support, several problems arise in practical applications. These include difficulty in adjusting the main keel dimensions, hindering quick adjustments to the overall keel position based on site conditions and ceiling requirements. Furthermore, the assembly of current keel frames often involves simply snapping them into clips. While this method allows for rapid assembly, it requires uniform keel specifications, limiting its applicability. Moreover, the stability of the keel frame after installation is compromised, leading to wobbling and poor overall performance. Therefore, a new ceiling keel frame structure is urgently needed to address these issues. Summary of the Invention

[0004] The purpose of this invention is to address the problems that arise in the practical application of current keel frames, although they can provide structural support. These problems mainly include the difficulty in adjusting the size of the main keel, making it impossible to quickly adjust the position of the overall keel according to site conditions and ceiling requirements. Furthermore, the current keel frame assembly often involves directly snapping the frames into clips. While this method allows for quick assembly, it requires uniform specifications, limiting its applicability. Moreover, the stability of the keel frame after installation cannot be guaranteed, leading to wobbling and poor performance in practical applications. Therefore, this invention proposes a ceiling keel frame structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a ceiling keel frame structure, including a main keel assembly, wherein both sides of the main keel assembly are provided with installation and positioning mechanisms, which are used for the stable and rapid installation of the main keel assembly. A triangular keel frame is provided on the top surface of the main keel assembly. The installation and positioning mechanism includes a positioning screw, a threaded rotating rod is threadedly installed at the bottom end of the positioning screw, an outer rotating sleeve is fixedly installed on the top end of the threaded rotating rod, an expansion positioning sleeve is slidably fitted on the outside of the positioning screw, and a first fastening screw sleeve is threadedly installed below the expansion positioning sleeve on the outer side of the positioning screw.

[0006] As a further description of the above technical solution:

[0007] The threaded rod is externally slidably fitted with a main keel mounting assembly, which includes a movable mounting component that is slidably mounted on the outside of the threaded rod through a sliding hole provided inside it.

[0008] As a further description of the above technical solution:

[0009] The movable mounting component has a telescopic clip installed inside by a built-in spring. The threaded rotating rod has a second fastening sleeve and an adjusting sleeve installed on its external thread. The second fastening sleeve and the adjusting sleeve are in close contact with and pressed against the bottom and top surfaces of the movable mounting component, respectively.

[0010] As a further description of the above technical solution:

[0011] The telescopic clip has an installation groove on one outer wall, and a limiting component is slidably installed in the installation groove. The limiting component includes a mounting bracket, which is slidably connected to the installation groove.

[0012] As a further description of the above technical solution:

[0013] The mounting bracket has a limit sliding shaft fixedly installed on both outer walls of the mounting bracket. Side sliding grooves are provided on both sides of the mounting groove. One end of the limit sliding shaft is slidably connected to the side sliding groove. A limit plate is rotatably installed on one side of the mounting bracket via a rotating shaft. A torsion spring is fixedly installed on the outside of the rotating shaft.

[0014] As a further description of the above technical solution:

[0015] The limiting plate can rotate clockwise via a rotating shaft, and one end of the torsion spring is fixedly connected to one side of the outer wall of the mounting bracket.

[0016] As a further description of the above technical solution:

[0017] A connecting spring is fixedly installed on the bottom surface of the mounting bracket, and one end of the connecting spring is fixedly connected to the bottom surface of the mounting groove.

[0018] Furthermore, with the addition of an installation and positioning mechanism, the main keel frame can be directly snapped into the telescopic clip and the movable mounting component during installation. Since the telescopic clip and the movable mounting component have a certain degree of flexibility, there are no specific requirements for the width of the installed main keel frame, greatly improving the specifications of the installed keel frame. Simultaneously, when the main keel frame is snapped into the telescopic clip and the movable mounting component, downward pressure is first applied to the limiting plate, causing it to rotate clockwise until the main keel frame is fully snapped into the telescopic clip and the movable mounting component. At this point, the telescopic clip and the movable mounting component will stably clamp the main keel frame through an internal spring, allowing the main keel frame to move horizontally. The limiting plate will return to a horizontal position, and the connecting spring will cause the lower surface of the horizontal limiting plate to fit against the upper surface of the main keel frame, thereby completing the vertical limiting of the main keel frame. This ensures that the main keel frame is firmly locked between the telescopic clip and the movable mounting part, preventing wobbling. This design not only allows for quick installation of the main keel frame but also has strong tolerance for the thickness of the installed main keel frame, improving the applicability of the structure. Furthermore, after installation, it can automatically and effectively limit the horizontal and vertical directions of the main keel frame, preventing wobbling during later use, ensuring the overall stability of the keel frame, and greatly improving the practical application effect of the keel frame.

[0019] As a further description of the above technical solution:

[0020] The main keel assembly includes a main keel frame, and side guide grooves are provided on both outer walls of the main keel frame. Sliding guide blocks are slidably installed inside the side guide grooves.

[0021] As a further description of the above technical solution:

[0022] The outer surface of the sliding guide block is provided with an anti-slip sleeve, and a positioning plate is fixedly installed at one end of the sliding guide block. Four positioning plates are symmetrically arranged about the longitudinal center section of the main keel frame.

[0023] As a further description of the above technical solution:

[0024] The positioning plate is tightly attached to and pressed against the upper surface of the triangular keel frame. There are two main keel components and two triangular keel frames. The common area between the two main keel components and the triangular keel frame is square.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. In this invention, by providing a matching installation and positioning mechanism, when installing the main keel assembly, the main keel frame can be directly snapped between the telescopic clip and the movable mounting component. Since the telescopic clip and the movable mounting component have a certain degree of flexibility, there are no specific requirements for the width of the installed main keel frame, which can greatly improve the specifications of the installed keel frame. Simultaneously, when the main keel frame is snapped between the telescopic clip and the movable mounting component, downward pressure is first applied to the limiting plate, causing the limiting plate to rotate clockwise until the main keel frame is completely snapped between the telescopic clip and the movable mounting component. At this time, the telescopic clip and the movable mounting component will stably clamp the main keel frame through the built-in spring, allowing the main keel frame to move horizontally. The limit plate will return to a horizontal position, and the connecting spring will cause the lower surface of the horizontal limit plate to fit against the upper surface of the main keel frame, thereby completing the vertical limit of the main keel frame. This ensures that the main keel frame is firmly locked between the telescopic clip and the movable mounting part, preventing wobbling. This design not only allows for quick installation of the main keel frame but also has strong tolerance for the thickness of the installed main keel frame, improving the applicability of the structure. Furthermore, after installation, it can automatically and effectively limit the horizontal and vertical directions of the main keel frame, preventing wobbling during later use, ensuring the overall stability of the keel frame, and greatly improving the practical application effect of the keel frame.

[0027] 2. In this invention, by setting a telescopically adjustable positioning screw and threaded rotating rod on the installation positioning mechanism, before installing the keel, the positioning screw is first positioned on the ceiling. The position of the expansion positioning sleeve is adjusted by directly rotating the first fastening screw sleeve. A hole of appropriate size is opened on the ceiling wall surface, and the expansion positioning sleeve at one end of the positioning screw is nailed into the hole. After the expansion positioning sleeve is inserted into the hole, it will automatically burst open and lock in place. At this time, the first fastening screw sleeve is rotated to make the first fastening screw sleeve firmly fit against the wall, thus completing the fixation of the positioning screw. According to the height requirements of the ceiling, the threaded rotating rod can be directly rotated to quickly adjust the height position of the threaded rotating rod. After the initial adjustment, the specific position of the main keel installation component can be controlled by rotating the second fastening screw sleeve and the adjusting screw sleeve, thereby completing the fine adjustment of the ceiling position. The secondary adjustment not only realizes the change of the ceiling position according to the needs, but also ensures the precision of the position adjustment and improves the actual application effect of the overall structure.

[0028] 3. In this invention, movable positioning plates and sliding guide blocks are provided on the main keel assembly. After the main keel frame is installed, the triangular keel frame is then installed. At this time, the specific positions of the positioning plates and sliding guide blocks can be adjusted as needed. Since the sliding guide blocks have anti-slip sleeves on the outside, they will not easily move after the positions of the positioning plates and sliding guide blocks are adjusted. Then, the triangular keel frame can be directly inserted into each positioning plate. Since the main body of the triangular keel frame is located above the main keel frame, its main body has excellent support effect and is not prone to falling off. At the same time, after the triangular keel frame is installed, its position can be adjusted again as needed, which greatly improves the adjustability and correctability of the overall structure. The installation is simple and convenient, and the application effect is good. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of a ceiling keel frame structure.

[0030] Figure 2 This is a three-dimensional structural diagram of a ceiling keel frame structure from the first angle.

[0031] Figure 3 This is a three-dimensional structural diagram of a ceiling keel frame structure from a second angle.

[0032] Figure 4 This is an exploded three-dimensional structural diagram of a ceiling keel structure.

[0033] Figure 5 This is a schematic diagram of the combined three-dimensional structure of the main keel components in a ceiling keel frame structure.

[0034] Figure 6 This is an exploded three-dimensional structural diagram of the main keel component in a ceiling keel frame structure.

[0035] Figure 7 This is an exploded three-dimensional structural diagram of the main keel installation component in a ceiling keel frame structure.

[0036] Figure 8 This is an enlarged three-dimensional structural diagram of a limiting component in a ceiling keel structure.

[0037] Figure 9 A type of ceiling keel frame structure Figure 4 A magnified structural diagram of point A in the middle.

[0038] Legend:

[0039] 1. Triangular keel frame; 2. Main keel assembly; 21. Positioning mounting plate; 22. Side guide groove; 23. Sliding guide block; 24. Main keel frame; 3. Installation and positioning mechanism; 31. Positioning screw; 32. Outer rotating sleeve; 33. Threaded rotating rod; 34. Second fastening screw sleeve; 35. Expansion positioning sleeve; 36. First fastening screw sleeve; 37. Adjusting screw sleeve; 38. Main keel installation assembly; 381. Limiting assembly; 3811. Limiting slide shaft; 3812. Limiting plate; 3813. Torsion spring; 3814. Mounting bracket; 3815. Connecting spring; 382. Side sliding groove; 383. Movable mounting part; 384. Telescopic clamp. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figure 1-9 This invention provides a technical solution: a ceiling keel frame structure, including a main keel assembly 2, with installation and positioning mechanisms 3 on both sides of the main keel assembly 2. The installation and positioning mechanisms 3 are used for the stable and rapid installation of the main keel assembly 2. A triangular keel frame 1 is provided on the top surface of the main keel assembly 2. The installation and positioning mechanism 3 includes a positioning screw 31. A threaded rotating rod 33 is threadedly installed at the bottom end of the positioning screw 31. An outer rotating sleeve 32 is fixedly installed on the top end of the threaded rotating rod 33. An expansion positioning sleeve 35 is slidably fitted on the outside of the positioning screw 31. A first fastening sleeve 36 is threadedly installed below the expansion positioning sleeve 35 on the outer side of the positioning screw 31.

[0042] The specific implementation method is as follows: Before installing the keel, first position the positioning screw 31 on the ceiling, directly rotate the first fastening screw sleeve 36 to adjust the position of the expansion positioning sleeve 35, open a hole of appropriate size on the ceiling wall surface, and nail the expansion positioning sleeve 35 at one end of the positioning screw 31 into the hole. After the expansion positioning sleeve 35 is inserted into the hole, it will automatically burst open and lock in place. At this time, rotate the first fastening screw sleeve 36 to make the first fastening screw sleeve 36 firmly fit against the wall, thus completing the fixation of the positioning screw 31. According to the height requirements of the ceiling, the threaded rotating rod 33 can be directly rotated to quickly adjust the height position of the threaded rotating rod 33. After the initial adjustment of the position, the specific position of the main keel installation component 38 can be controlled by rotating the second fastening screw sleeve 34 and the adjusting screw sleeve 37, thereby completing the fine adjustment of the ceiling position.

[0043] The threaded rotating rod 33 is externally slidably fitted with a main keel mounting assembly 38. The main keel mounting assembly 38 includes a movable mounting part 383, which is slidably mounted on the outside of the threaded rotating rod 33 through a sliding hole provided inside. A telescopic locking part 384 is movably mounted inside the movable mounting part 383 via a built-in spring. A second fastening sleeve 34 and an adjusting sleeve 37 are threaded onto the outside of the threaded rotating rod 33. The second fastening sleeve 34 and the adjusting sleeve 37 are in close contact and pressed against the bottom and top surfaces of the movable mounting part 383, respectively. A mounting groove is provided on one outer wall of the telescopic locking part 384, and a limit assembly 381 is slidably mounted within the mounting groove. The limit assembly 381 includes a mounting bracket 3814. The mounting bracket 3814 is slidably connected to the mounting groove. Limiting sliding shafts 3811 are horizontally fixedly installed on both outer walls of the mounting bracket 3814. Side sliding grooves 382 are provided on both sides of the mounting groove. One end of the limiting sliding shaft 3811 is slidably connected to the side sliding groove 382. A limiting plate 3812 is rotatably installed on one side of the mounting bracket 3814 via a rotating shaft. A torsion spring 3813 is fixedly installed on the outside of the rotating shaft. The limiting plate 3812 can rotate clockwise via the rotating shaft. One end of the torsion spring 3813 is fixedly connected to one outer wall of the mounting bracket 3814. A connecting spring 3815 is fixedly installed on the bottom surface of the mounting bracket 3814. One end of the connecting spring 3815 is fixedly connected to the bottom surface of the mounting groove.

[0044] The specific implementation method is as follows: When installing the main keel assembly 2, the main keel frame 24 can be directly inserted between the telescopic clip 384 and the movable mounting part 383. Since the telescopic clip 384 and the movable mounting part 383 have a certain degree of flexibility, there is no specific requirement for the width of the installed main keel frame 24, which can greatly improve the specifications of the installed keel frame. At the same time, when inserting the main keel frame 24 between the telescopic clip 384 and the movable mounting part 383, a downward pressure is first applied to the limiting plate 3812, causing the limiting plate 3812 to rotate clockwise until the main keel frame 24 is fully inserted. When fully engaged between the telescopic clip 384 and the movable mounting piece 383, the telescopic clip 384 and the movable mounting piece 383 will stably clamp the main keel frame 24 through the built-in spring, limiting the horizontal direction of the main keel frame 24. At the same time, the limiting plate 3812 will return to a horizontal state, and the connecting spring 3815 will make the lower surface of the horizontal limiting plate 3812 fit with the upper surface of the main keel frame 24, thereby completing the vertical direction limitation of the main keel frame 24, so that the main keel frame 24 is firmly locked between the telescopic clip 384 and the movable mounting piece 383 without shaking.

[0045] This design not only enables the rapid installation of the main keel frame 24, but also provides strong tolerance for the thickness of the installed main keel frame 24, thus improving the applicability of the structure. Furthermore, after installation, it can automatically and effectively limit the horizontal and vertical directions of the main keel frame 24, preventing it from shaking during later use, ensuring the overall stability of the keel frame, and greatly improving the practical application effect of the keel frame.

[0046] The main keel assembly 2 includes a main keel frame 24. Side guide grooves 22 are provided on both outer walls of the main keel frame 24. Sliding guide blocks 23 are slidably installed inside the side guide grooves 22. Anti-slip outer sleeves are provided on the outer surfaces of the sliding guide blocks 23. Positioning plates 21 are fixedly installed at one end of the sliding guide blocks 23. Four positioning plates 21 are symmetrically arranged about the longitudinal center section of the main keel frame 24. The positioning plates 21 are tightly attached to and pressed against the upper surface of the triangular keel frame 1. There are two main keel assemblies 2 and two triangular keel frames 1. The common area between the two main keel assemblies 2 and the triangular keel frames 1 is square.

[0047] The specific implementation method is as follows: After the main keel frame 24 is installed, the triangular keel frame 1 is then installed. At this time, the specific positions of the positioning hanging plate 21 and the sliding guide block 23 can be adjusted according to the requirements. Since the sliding guide block 23 has an anti-slip sleeve on its outside, it will not easily move after the positions of the positioning hanging plate 21 and the sliding guide block 23 are adjusted. At this time, the triangular keel frame 1 can be directly inserted into each positioning hanging plate 21. Since the main body of the triangular keel frame 1 is located above the main keel frame 24, its main body has excellent support effect and is not easy to fall off. At the same time, after the triangular keel frame 1 is installed, its position can be adjusted again according to the requirements, which greatly improves the adjustability and correctability of the overall structure. The installation is simple and convenient, and the application effect is good.

[0048] Working principle: Before installing the keel, first position the positioning screw 31 on the ceiling. Directly rotate the first fastening screw sleeve 36 to adjust the position of the expansion positioning sleeve 35. Drill a hole of appropriate size on the ceiling wall surface, and nail the expansion positioning sleeve 35 at one end of the positioning screw 31 into the hole. After the expansion positioning sleeve 35 is inserted into the hole, it will automatically burst open and lock in place. At this time, rotate the first fastening screw sleeve 36 to make the first fastening screw sleeve 36 firmly fit against the wall, completing the fixation of the positioning screw 31. According to the height requirements of the ceiling, the threaded rotating rod 33 can be directly rotated to quickly adjust the height position of the threaded rotating rod 33. After the initial adjustment, the height position can also be adjusted by rotating... The second fastening screw sleeve 34 and the adjusting screw sleeve 37 control the specific position of the main keel installation component 38, thereby completing the fine adjustment of the ceiling position. When installing the main keel component 2, the main keel frame 24 can be directly inserted between the telescopic clip 384 and the movable installation component 383. Since the telescopic clip 384 and the movable installation component 383 have a certain degree of flexibility, there is no specific requirement for the width of the installed main keel frame 24, which can greatly improve the specifications of the installed keel frame. At the same time, when the main keel frame 24 is inserted between the telescopic clip 384 and the movable installation component 383, downward pressure will be applied to the limiting plate 3812 first to limit the position. The plate 3812 rotates clockwise until the main keel frame 24 is fully engaged between the telescopic clamp 384 and the movable mounting part 383. At this point, the telescopic clamp 384 and the movable mounting part 383 will stably clamp the main keel frame 24 through the built-in spring, limiting the horizontal direction of the main keel frame 24. At the same time, the limiting plate 3812 will return to a horizontal state, and the connecting spring 3815 will cause the lower surface of the horizontal limiting plate 3812 to fit against the upper surface of the main keel frame 24, thereby completing the vertical limiting of the main keel frame 24, making the main keel frame 24 firmly engaged between the telescopic clamp 384 and the movable mounting part 383, preventing it from... Shaking occurs; after the main keel frame 24 is installed, the triangular keel frame 1 is installed. At this time, the specific positions of the positioning hanging plate 21 and the sliding guide block 23 can be adjusted as needed. Since the sliding guide block 23 has an anti-slip sleeve on the outside, it will not move easily after the positions of the positioning hanging plate 21 and the sliding guide block 23 are adjusted. At this time, the triangular keel frame 1 can be directly inserted into each positioning hanging plate 21. Since the main body of the triangular keel frame 1 is located above the main keel frame 24, its main body has excellent support effect and is not easy to fall off. At the same time, after the triangular keel frame 1 is installed, its position can be adjusted again as needed.

[0049] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A ceiling keel frame structure, comprising a main keel assembly (2), wherein both sides of the main keel assembly (2) are provided with installation positioning mechanisms (3), the installation positioning mechanisms (3) being used for stable and rapid installation of the main keel assembly (2), and a triangular keel frame (1) being provided on the top surface of the main keel assembly (2), characterized in that, The installation positioning mechanism (3) includes a positioning screw (31), a threaded rotating rod (33) is threadedly installed at the bottom end of the positioning screw (31), an outer rotating sleeve (32) is fixedly installed on the top end of the threaded rotating rod (33), an expansion positioning sleeve (35) is slidably fitted on the outside of the positioning screw (31), and a first fastening sleeve (36) is threadedly installed below the expansion positioning sleeve (35) on the outer side of the positioning screw (31); a main keel installation assembly (38) is slidably fitted on the outside of the threaded rotating rod (33). The main keel mounting assembly (38) includes a movable mounting component (383), which is slidably mounted on the outside of the threaded rotating rod (33) through a sliding hole provided inside it; a telescopic clip (384) is movably mounted inside the movable mounting component (383) through a built-in spring; a second fastening sleeve (34) and an adjusting sleeve (37) are threaded on the outside of the threaded rotating rod (33), and the second fastening sleeve (34) and the adjusting sleeve (37) are respectively attached to the bottom surface of the movable mounting component (383). It is in close contact with and pressed against the top surface; a mounting groove is provided on one outer wall of the telescopic clip (384), and a limiting component (381) is slidably installed in the mounting groove. The limiting component (381) includes a mounting bracket (3814), which is slidably connected to the mounting groove; both outer walls of the mounting bracket (3814) are laterally fixedly installed with limiting sliding shafts (3811), and both sides of the mounting groove are provided with side sliding grooves (382). One end of the limiting sliding shaft (3811) slides with the side sliding groove (382). The mounting bracket (3814) is connected in a manner where a limiting plate (3812) is rotatably mounted on one side via a rotating shaft, and a torsion spring (3813) is fixedly mounted on the outside of the rotating shaft. The limiting plate (3812) can rotate clockwise via the rotating shaft, and one end of the torsion spring (3813) is fixedly connected to the outer wall of one side of the mounting bracket (3814). A connecting spring (3815) is fixedly mounted on the bottom surface of the mounting bracket (3814), and one end of the connecting spring (3815) is fixedly connected to the bottom surface of the mounting groove.

2. The ceiling joist frame structure according to claim 1, characterized in that, The main keel assembly (2) includes a main keel frame (24). Side guide grooves (22) are provided on both outer walls of the main keel frame (24). Sliding guide blocks (23) are slidably installed inside the side guide grooves (22). Anti-slip sleeves are provided on the outer surface of the sliding guide blocks (23). A positioning plate (21) is fixedly installed at one end of the sliding guide block (23). Four positioning plates (21) are symmetrically arranged about the longitudinal center section of the main keel frame (24). The positioning plates (21) are tightly attached to and pressed against the upper surface of the triangular keel frame (1).

3. A ceiling joist frame structure according to claim 1 or 2, characterized in that, Two main keel components (2) and two triangular keel frames (1) are provided, and the common area between the two main keel components (2) and the triangular keel frames (1) is square.

Images