A unit-type openable concealed keel ceiling structure and its construction method

Abstract

This invention discloses a unit-type openable concealed keel ceiling structure and its construction method. The device includes mineral wool boards, auxiliary hangers for connecting adjacent mineral wool boards, and main hangers mounted on the auxiliary hangers. The mineral wool boards include a left edge panel, a right edge panel, and multiple standard mineral wool boards. The main hangers include multiple keel hangers and main keels hanging from the multiple keel hangers. The auxiliary hangers include hangers passing through the main keels and T-shaped auxiliary keels located below the hangers. By setting the T-shaped auxiliary keels, the distance between adjacent rows of mineral wool boards during installation is flexibly increased, facilitating the installation and disassembly of the mineral wool boards and avoiding damage. The method includes the following steps: 1. Determining the mineral wool board layout; 2. Coordinating the installation of the main hangers and auxiliary hangers; 3. Assembling the mineral wool boards. By installing the main hangers and auxiliary hangers, the mineral wool boards can be detachably installed, and each standard mineral wool board can serve as a ceiling inspection port, making maintenance flexible and convenient.

Description

Technical Field

[0001] This invention belongs to the field of ceiling construction technology in building decoration and renovation, specifically relating to a unit-type openable concealed keel ceiling structure and ceiling construction method. Background Technology

[0002] Standard mineral wool boards are made primarily from mineral fiber wool, with the addition of appropriate additives. They are processed through batching, molding, drying, embossing, coating, and cutting, resulting in boards with various surface treatments. Due to their numerous advantages, standard mineral wool boards are widely used in ceiling construction. However, in practice, the secondary joists of these boards are often exposed, affecting the overall aesthetics. Existing methods that conceal the secondary joists often involve making the joists and boards non-removable. When replacement or maintenance of equipment and pipelines is needed, large areas of the boards must be removed, damaging the material and increasing economic losses. Therefore, a ceiling structure and construction method is needed that ensures the secondary joists are not exposed while allowing each board to function as an independent unit, facilitating disassembly, installation, and maintenance. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing a unit-type openable concealed keel ceiling structure. By setting T-shaped secondary keels, the distance between two adjacent rows of T-shaped secondary keels is flexibly increased, which facilitates the installation and disassembly of mineral wool boards without damaging them. By setting a limiting hydraulic rod, the first support plate can provide upward support to the mineral wool board, which provides reliable and stable support, good performance, and is easy to promote and use.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a unit openable concealed keel ceiling structure, characterized in that: it includes mineral wool board, auxiliary hanging member for connecting two adjacent mineral wool boards, and main hanging member disposed on the auxiliary hanging member;

[0005] The mineral wool board includes a left edge banding board, a right edge banding board, and a plurality of standard mineral wool boards disposed between the left edge banding board and the right edge banding board;

[0006] The main lifting component includes multiple keel lifting components and a main keel hanging on the multiple keel lifting components. The multiple keel lifting components are arranged along the length direction of the standard mineral wool board. The keel lifting components are provided with fully threaded lifting bars that are anchored into the concrete top slab and limiting bolts for limiting the position of the main keel. The limiting bolts are located above the main keel.

[0007] The auxiliary hanging component includes a hanger that passes through the main keel and a T-shaped auxiliary keel located at the lower part of the hanger. The T-shaped auxiliary keel includes a first vertical plate, a second vertical plate, a first support plate connected to the first vertical plate for hanging one of the standard mineral wool boards, and a second support plate connected to the second vertical plate for hanging another of the standard mineral wool boards. The first vertical plate and the second vertical plate are both connected to the lower end of the hanger and are fitted together. The first support plate and the second support plate are located on both sides of the hanger and are at the same horizontal height. The first vertical plate and the first support plate are connected by a hinge and a limiting hydraulic rod.

[0008] The above-mentioned unit-openable concealed keel ceiling structure is characterized in that: the standard mineral wool board includes a standard horizontal board, a first standard hanging part and a second standard hanging part respectively disposed on both sides of the standard horizontal board, and a standard extension part disposed below the first standard hanging part, wherein the first standard hanging part is located above the first support plate, and the second standard hanging part is located above the second support plate.

[0009] The left edge banding plate includes a first edge banding horizontal plate, a first edge banding hook part and a first edge banding extension part disposed on one side of the first edge banding horizontal plate;

[0010] The right-side edge banding includes a second edge banding horizontal plate and a second edge banding hook part disposed on one side of the second edge banding horizontal plate.

[0011] The above-mentioned unit-openable concealed keel ceiling structure is characterized in that: a first gap is left between the first standard hanging part and the standard extension part, and between the first edge sealing hanging part and the first edge sealing extension part, for the insertion of the first support plate; the standard extension part and the first edge sealing extension part are both located below the first support plate and the second support plate.

[0012] A second gap is provided between the first standard mounting part and the first vertical plate, and between the first edge-sealing mounting part and the first vertical plate, for the installation of the hinge and the limiting hydraulic rod.

[0013] The above-mentioned unit-openable concealed keel ceiling structure is characterized in that: a first U-shaped reinforcement is provided on the first standard hanging part, and a second U-shaped reinforcement is provided on the second standard hanging part;

[0014] The first U-shaped reinforcement is located above the first tray, and the second U-shaped reinforcement is located above the second tray.

[0015] Meanwhile, this invention also discloses a method for constructing a unit-type openable concealed keel ceiling. The method is simple and convenient, and by installing main and auxiliary hangers, multiple mineral wool boards can be detachably installed. The installed ceiling structure has high strength, good load-bearing capacity, and is easy to construct. During disassembly, each standard mineral wool board can be used as a ceiling inspection port, making maintenance flexible and convenient. The method is characterized by the following steps:

[0016] Step 1: Determine the mineral wool board layout: Based on the dimensions of the concrete ceiling slab in the room, determine whether the mineral wool board splice joints are arranged horizontally or vertically, and determine the number of rows M and columns P of standard mineral wool boards. Then, determine the number of rows of the main hangers as M+1. Next, based on the width of the standard mineral wool boards, determine the distance between two adjacent rows of main joists. Finally, mark the installation positions of the threaded rods on the concrete ceiling slab. Here, M and P are both positive integers greater than 1.

[0017] Step 2: Coordinate the installation of the main and auxiliary lifting components:

[0018] Step 201: Drill holes at the marked installation positions on the concrete top slab and fix M+1 fully threaded suspension rods, and then thread keel hangers through the M+1 fully threaded suspension rods; wherein the M+1 fully threaded suspension rods are located in the same column at the outermost edge;

[0019] Step 202: Install the main keel: Pass one end of a main keel through a keel hanger, and then pass the hanger of the P group of auxiliary hangers and multiple keel hangers through the other end of the main keel. Then, threaded rods anchored into the concrete top slab are sequentially threaded through the multiple keel hangers. Each group of auxiliary hangers includes at least two hangers.

[0020] Step 203: Repeat step 202 multiple times until the installation of the main keel of row M+1 is completed;

[0021] Step 3: Assemble the mineral wool boards: First, hang P left-side edge banding boards on the T-shaped secondary keel of the first row of auxiliary hangers. Then, sequentially hang the standard mineral wool boards in M ​​rows and P columns on the T-shaped secondary keels of the second to M+1 rows of auxiliary hangers. Finally, hang P right-side edge banding boards on the T-shaped secondary keel of the M+1 row of auxiliary hangers to complete the assembly of the mineral wool boards.

[0022] The above-mentioned method is characterized in that: in step three, the standard mineral wool board is hung as follows: the auxiliary hanger is moved on the main keel to an installation position away from the standard mineral wool board to be installed, and the first support plate is first flipped upward. Then, the auxiliary hanger closest to the standard mineral wool board is moved to one end of the standard mineral wool board. The first support plate of the auxiliary hanger is then flipped to a horizontal state and inserted between the first standard hanging part and the standard extension part. At this time, the second support plate is also supported under the standard hanging part, thus completing the hanging of a standard mineral wool board.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. This invention facilitates the hanging of multiple mineral wool boards by setting main and auxiliary hanging components. By setting left and right edge sealing boards and standard mineral wool boards, it is easy to select the number of standard mineral wool boards according to the room size, thus forming a complete rectangular ceiling. This makes it suitable for conventional building rooms. By setting standard extensions, it can not only cover the seam between two adjacent standard mineral wool boards, resulting in better flatness of the ceiling surface and a harmonious and aesthetically pleasing concealed keel, but also prevent dust and debris from entering the ceiling, thereby avoiding damage to the ceiling. It is highly practical and easy to promote and use.

[0025] 2. By setting up T-shaped secondary keels, this invention facilitates the adjustment of the angle between the first vertical plate and the first support plate using hinges, thereby flexibly increasing the distance between adjacent rows of T-shaped secondary keels. This facilitates the installation and disassembly of mineral wool boards without damaging them or affecting their secondary use. By setting up limiting hydraulic rods, the first support plate can provide upward support to the mineral wool board when it supports it, ensuring reliable and stable support and good performance.

[0026] 3. The method of the present invention is simple and easy to operate. By installing the main and auxiliary lifting components, multiple mineral wool boards can be detachably installed. The ceiling structure after installation has high strength, good load-bearing capacity, and is easy to construct. During disassembly, each standard mineral wool board can be used as a ceiling inspection port, making inspection flexible and convenient, and easy to promote and use.

[0027] In summary, the unit-type openable mineral wool board concealed keel ceiling structure adopted in this invention, by setting T-shaped secondary keels, flexibly increases the distance between adjacent rows of T-shaped secondary keels, facilitating the installation and disassembly of mineral wool boards without damaging them. The use of limiting hydraulic rods ensures that the first support plate provides upward support to the mineral wool boards, resulting in reliable and stable support and good performance. The ceiling construction method is simple and convenient to operate. By installing main and secondary hangers, multiple mineral wool boards can be detachably installed. The installed ceiling structure has high strength, good load-bearing capacity, and is easy to construct. During disassembly, each standard mineral wool board can serve as a ceiling inspection port, making maintenance flexible and convenient, and facilitating widespread use.

[0028] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention.

[0030] Figure 2 for Figure 1 The main view.

[0031] Figure 3 for Figure 2 AA sectional view.

[0032] Figure 4 This is a schematic diagram of the T-shaped secondary keel of the present invention.

[0033] Figure 5 This is a schematic diagram of the structure of the standard mineral wool board of the present invention.

[0034] Figure 6 This is a schematic diagram of the left-side sealing plate of the present invention.

[0035] Figure 7 This is a schematic diagram of the right-side sealing plate of the present invention.

[0036] Figure 8 This is a flowchart of the method of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1—Standard mineral wool board; 1-1—Standard horizontal board; 1-2—First standard hanging part;

[0039] 1-3—Second standard hanging part; 1-4—Standard extension part; 2—Fully threaded suspension rod;

[0040] 3—Keel hanger; 4—Limit bolt; 5—Main keel;

[0041] 6—Hanging accessory; 7—T-shaped secondary keel; 8—First vertical board;

[0042] 9—Second vertical plate; 10—First support plate; 11—Second support plate;

[0043] 12—Hinge; 13—Limiting hydraulic rod; 14—First U-shaped reinforcement;

[0044] 15—Second U-shaped reinforcement; 16—Left side sealing plate; 16-1—First side sealing horizontal

[0045] plate;

[0046] 16-2—First edge banding; 16-3—First edge banding extension; 17—Right side edge banding.

[0047] Department; Department;

[0048] 17-1—Second edge sealing horizontally; 17-2—Second edge sealing connection

[0049] Board; section. Detailed Implementation

[0050] like Figures 1 to 7As shown, a unit-type openable concealed keel ceiling structure of the present invention includes a mineral wool board, an auxiliary hanger for connecting two adjacent mineral wool boards, and a main hanger disposed on the auxiliary hanger; the mineral wool board includes a left edge sealing plate 16, a right edge sealing plate 17, and a plurality of standard mineral wool boards 1 disposed between the left edge sealing plate 16 and the right edge sealing plate 17.

[0051] The main lifting component includes multiple keel lifting components 3 and a main keel 5 hanging on the multiple keel lifting components 3. The multiple keel lifting components 3 are arranged along the length direction of the standard mineral wool board 1. The keel lifting components 3 are provided with fully threaded lifting bars 2 that are anchored into the concrete top slab and limiting bolts 4 for limiting the position of the main keel 5. The limiting bolts 4 are located above the main keel 5.

[0052] The auxiliary suspension components include a hanger 6 that passes through the main keel 5 and a T-shaped auxiliary keel 7 located below the hanger 6, such as... Figure 4 As shown, the T-shaped secondary keel 7 includes a first vertical plate 8, a second vertical plate 9, a first support plate 10 connected to the first vertical plate 8 and used to hang one of the standard mineral wool boards 1, and a second support plate 11 connected to the second vertical plate 9 and used to hang another of the standard mineral wool boards 1. The first vertical plate 8 and the second vertical plate 9 are both connected to the lower end of the hanger 6 and are laid close together. The first support plate 10 and the second support plate 11 are located on both sides of the hanger 6 and are at the same horizontal height. The first vertical plate 8 and the first support plate 10 are connected by a hinge 12 and a limiting hydraulic rod 13.

[0053] In use, this invention facilitates the hanging of multiple mineral wool boards by setting up main and auxiliary lifting components. The T-shaped secondary keel 7 allows for adjustment of the angle between the first vertical plate 8 and the first support plate 10 using the hinge 12, thereby flexibly increasing the distance between adjacent rows of T-shaped secondary keels 7. This facilitates the installation and disassembly of the mineral wool boards without damaging them or affecting their secondary use. The limiting hydraulic rod 13 ensures that the first support plate 10 provides upward support to the mineral wool boards when supporting them, ensuring reliable and stable support.

[0054] In this embodiment, as Figure 5 As shown, the standard mineral wool board 1 includes a standard horizontal board 1-1, a first standard hooking part 1-2 and a second standard hooking part 1-3 respectively disposed on both sides of the standard horizontal board 1-1, and a standard extension part 1-4 disposed below the first standard hooking part 1-2. The first standard hooking part 1-2 is located above the first tray 10, and the second standard hooking part 1-3 is located above the second tray 11.

[0055] like Figure 6As shown, the left edge sealing plate 16 includes a first edge sealing horizontal plate 16-1, a first edge sealing hook part 16-2 and a first edge sealing extension part 16-3 disposed on one side of the first edge sealing horizontal plate 16-1; as Figure 7 As shown, the right edge sealing plate 17 includes a second edge sealing horizontal plate 17-1 and a second edge sealing hook part 17-2 disposed on one side of the second edge sealing horizontal plate 17-1.

[0056] In actual construction, there are multiple auxiliary lifting parts. These auxiliary lifting parts are evenly distributed along the length of the standard mineral wool board 1 and located between two adjacent keel lifting parts 3. The standard extension 1-4 of one standard mineral wool board 1 abuts against the standard horizontal plate 1-1 of the adjacent standard mineral wool board 1, so that the lower surface between two adjacent standard mineral wool boards 1 is neat and without gaps.

[0057] It should be noted that by setting the left edge sealing plate, the right edge sealing plate, and the standard mineral wool board 1, it is easy to select the number of standard mineral wool boards 1 according to the room size, and then form a complete rectangular ceiling, which is suitable for conventional building rooms. By setting the standard extensions 1-4, the seam between two adjacent standard mineral wool boards can be covered, resulting in better flatness of the ceiling panel and a harmonious and beautiful concealed keel. It can also prevent dust and debris from entering the ceiling, thereby avoiding damage to the ceiling.

[0058] In this embodiment, a first gap is provided between the first standard hook part 1-2 and the standard extension part 1-4, and between the first edge sealing hook part 16-2 and the first edge sealing extension part 16-3, for the insertion of the first tray 10. The standard extension part 1-4 and the first edge sealing extension part 16-3 are both located below the first tray 10 and the second tray 11.

[0059] Furthermore, a second gap is provided between the first standard hook part 1-2 and the first vertical plate 8, and between the first edge sealing hook part 16-2 and the first vertical plate 8, for the installation of the hinge 12 and the limiting hydraulic rod 13.

[0060] In this embodiment, a first U-shaped reinforcement 14 is provided on the first standard mounting part 1-2, and a second U-shaped reinforcement 15 is provided on the second standard mounting part 1-3; the first U-shaped reinforcement 14 is located above the first tray 10, and the second U-shaped reinforcement 15 is located above the second tray 11.

[0061] like Figure 8 The method for constructing a unit-type openable concealed keel ceiling includes the following steps:

[0062] Step 1: Determine the mineral wool board layout: Based on the dimensions of the concrete ceiling slab in the room, determine whether the mineral wool board splice joints are arranged horizontally or vertically, and determine the number of rows M and columns P of the standard mineral wool board 1. Then, determine the number of rows of the main hangers as M+1. Based on the width of the standard mineral wool board 1, determine the distance between two adjacent rows of main keels 5. Then, mark the installation position of the full-thread hanger 2 on the concrete ceiling slab. Wherein, M and P are both positive integers greater than 1.

[0063] During actual construction, measurements and layout work are carried out according to the actual ceiling design elevation on site. First, the horizontal control line of the ceiling elevation is marked on the wall and column surface with ink lines. Then, the position line of the main keel 5 is marked on the concrete ceiling slab. From the center of the main keel 5 to both sides, the fixing points and positions of the full-thread suspension rods 2 are marked. The length direction of the main keel 5 is parallel to the long side of the room.

[0064] Step 2: Coordinate the installation of the main and auxiliary lifting components:

[0065] Step 201: Drill holes at the marked installation positions on the concrete top slab and fix M+1 fully threaded suspension rods 2, and then thread the keel hanger 3 through the M+1 fully threaded suspension rods 2; wherein the M+1 fully threaded suspension rods 2 are located in the same column at the outermost edge.

[0066] In actual construction, the upper part of the fully threaded suspension rod 2 is anchored into the concrete top slab using expansion bolts. First, a hole is drilled in the concrete top slab with a drilling depth of 50mm and a hole diameter slightly larger than the diameter of the expansion bolt. The expansion bolt is then fixed in the concrete top slab to ensure that the fully threaded suspension rod 2 below the expansion bolt is vertically downward and securely installed. The fully threaded suspension rod 2 is a Φ8 hot-dip galvanized fully threaded suspension rod. The spacing between two adjacent fully threaded suspension rods 2 is less than 1000mm. The outermost fully threaded suspension rod 2 is no more than 300mm away from the inner partition wall or outer wall. All fully threaded suspension rods 2 installed along the length of the same main keel 5 are in a straight line. The positions of terminal equipment such as lighting fixtures, smoke detectors, and fire sprinklers are also taken into consideration to prevent collisions and conflicts.

[0067] Step 202: Install the main keel: Pass one end of a main keel 5 through a keel hanger 3, and then pass the hanger 6 of the P group of auxiliary hangers and multiple keel hangers 3 through the other end of the main keel 5, and sequentially thread the fully threaded hanger 2 into the concrete top slab on the multiple keel hangers 3; wherein, each group of auxiliary hangers includes at least two hangers 6.

[0068] Step 203: Repeat step 202 multiple times until the installation of the main keel 5 in row M+1 is completed.

[0069] During actual construction, the vertical center lines of the T-shaped secondary keel 7 and the main keel 5 coincide. The lengths of the first vertical plate 8 and the second vertical plate 9 are 10mm shorter than the actual measured lengths. This is to increase the allowable error value of the suspended ceiling and avoid the suspended ceiling height being too low after completion, which would affect acceptance and use.

[0070] During actual construction, at least two keel hangers 3 should be installed per row. The keel hangers 3 must avoid the splicing position of the hangers 6. Two nuts are installed at the bottom of the threaded rod 2, located above and below the keel hangers 3 respectively, to facilitate fixing the keel hangers 3. When installing the keel hangers 3, they must be arched. The joints of two adjacent main keels 5 should be staggered and not on the same line. To eliminate eccentric stress during the hanging of the keel hangers 3, the keel hangers 3 should be installed alternately, one upright and one in reverse, in a row. Adjust the leveling of the main keel 5 in units of rooms. When leveling, use lines drawn along the cross and diagonal directions of the room to adjust the straightness of the main keel 5 with the horizontal line, so that the height of the main keel 5 remains consistent. When the room area is large, pay attention to the impact of arching in the middle part when leveling the main keel 5. Adjust the nuts at the bottom of the threaded suspension rod 2 according to the horizontal elevation to adjust the main keel 5 to the design height and basically level it. After the main keel 5 is leveled as a whole, tighten the bolts on the threaded suspension rod 2 to fix the keel hanger 3 securely, thereby ensuring the stability of the main keel 5.

[0071] Step 3: Assemble the mineral wool board: First, hang P left-side edge banding boards 16 on the T-shaped secondary keel 7 of the first row of auxiliary hangers. Then, sequentially hang the standard mineral wool boards 1 in M ​​rows and P columns on the T-shaped secondary keels 7 of the second to M+1 rows of auxiliary hangers. Finally, hang P right-side edge banding boards 17 on the T-shaped secondary keel 7 of the M+1 row of auxiliary hangers to complete the assembly of the mineral wool board.

[0072] In this embodiment, in step three, the standard mineral wool board 1 is hung as follows: by opening and closing the hinge 12, it is convenient to move the auxiliary hanger on the main keel 5 to an installation position away from the standard mineral wool board 1 when installing the standard mineral wool board 1, and first flip the first support plate 10 upward to avoid the auxiliary hanger affecting the movement of the standard mineral wool board 1. Then, the auxiliary hanger closest to the standard mineral wool board 1 is moved to one end of the standard mineral wool board 1, and then the first support plate 10 of the auxiliary hanger is flipped to a horizontal state and inserted between the first standard hanging part 1-2 and the standard extension part 1-4. At this time, the second support plate 11 is also supported under the standard hanging part 1-3, thus completing the hanging of a standard mineral wool board 1.

[0073] It should be noted that the outer sides of the left edge banding 16 and the right edge banding 17 are fixed with edge keel. The edge keel is made of L-shaped galvanized light steel strip. The edge keel is fixed to the concrete wall column with nails. The spacing of the nails is no more than 500mm. If there are no concrete wall columns in the room or the strength of the base material is low, and the fastening force and gripping force of the nails are insufficient, expansion bolts are used for fixing or the length of the nails is increased.

[0074] This invention enables the detachable installation of multiple mineral wool boards by installing main and auxiliary lifting components. The installed ceiling structure has high strength, good load-bearing capacity, and is easy to construct. During disassembly, each standard mineral wool board 1 can be used as a ceiling inspection port, making inspection flexible and convenient.

[0075] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A unit-type openable concealed keel ceiling structure, characterized in that: It includes mineral wool boards, auxiliary lifting components for connecting two adjacent mineral wool boards, and main lifting components disposed on the auxiliary lifting components; The mineral wool board includes a left edge sealing board (16), a right edge sealing board (17), and a plurality of standard mineral wool boards (1) disposed between the left edge sealing board (16) and the right edge sealing board (17). The main lifting component includes multiple keel lifting components (3) and a main keel (5) hanging on the multiple keel lifting components (3). The multiple keel lifting components (3) are arranged along the length direction of the standard mineral wool board (1). The keel lifting components (3) are provided with fully threaded lifting bars (2) anchored into the concrete top slab and limiting bolts (4) used to limit the position of the main keel (5). The limiting bolts (4) are located above the main keel (5). The auxiliary hanging component includes a hanging component (6) passing through the main keel (5) and a T-shaped auxiliary keel (7) located at the lower part of the hanging component (6). The T-shaped auxiliary keel (7) includes a first vertical plate (8), a second vertical plate (9), a first support plate (10) connected to the first vertical plate (8) and used to hang one of the standard mineral wool boards (1), and a second support plate (11) connected to the second vertical plate (9) and used to hang another of the standard mineral wool boards (1). The first vertical plate (8) and the second vertical plate (9) are both connected to the lower end of the hanging component (6) and are closely fitted. The first support plate (10) and the second support plate (11) are located on both sides of the hanging component (6) and are at the same height. The first vertical plate (8) and the first support plate (10) are connected by a hinge (12) and a limiting hydraulic rod (13). The standard mineral wool board (1) includes a standard horizontal board (1-1), a first standard hook part (1-2) and a second standard hook part (1-3) respectively disposed on both sides of the standard horizontal board (1-1), and a standard extension part (1-4) disposed below the first standard hook part (1-2). The first standard hook part (1-2) is located above the first tray (10), and the second standard hook part (1-3) is located above the second tray (11). The left edge sealing plate (16) includes a first edge sealing horizontal plate (16-1), a first edge sealing hook part (16-2) disposed on one side of the first edge sealing horizontal plate (16-1), and a first edge sealing extension part (16-3). The right-side sealing plate (17) includes a second sealing horizontal plate (17-1) and a second sealing hook part (17-2) disposed on one side of the second sealing horizontal plate (17-1). A first gap is provided between the first standard hook part (1-2) and the standard extension part (1-4), and between the first edge sealing hook part (16-2) and the first edge sealing extension part (16-3) for the insertion of the first tray (10). The standard extension part (1-4) and the first edge sealing extension part (16-3) are both located below the first tray (10) and the second tray (11). A second gap is provided between the first standard hook part (1-2) and the first vertical plate (8), and between the first edge sealing hook part (16-2) and the first vertical plate (8) for the installation of the hinge (12) and the limiting hydraulic rod (13).

2. The unit-type openable concealed keel ceiling structure according to claim 1, characterized in that: The first standard mounting part (1-2) is provided with a first U-shaped reinforcement (14), and the second standard mounting part (1-3) is provided with a second U-shaped reinforcement (15). The first U-shaped reinforcement (14) is located above the first tray (10), and the second U-shaped reinforcement (15) is located above the second tray (11).

3. A method for ceiling construction using the unit-openable concealed keel ceiling structure as described in claim 1, characterized in that, The method includes the following steps: Step 1: Determine the mineral wool board layout: Based on the dimensions of the concrete ceiling slab in the room, determine whether the mineral wool board splice joints are arranged horizontally or vertically, and determine the number of rows M and columns P of the standard mineral wool board (1), and then determine the number of rows of the main hangers as M+1. Then, based on the width of the standard mineral wool board (1), determine the distance between two adjacent rows of main keels (5), and then mark the installation position of the full-thread hanger (2) on the concrete ceiling slab; where M and P are both positive integers greater than 1. Step 2: Coordinate the installation of the main and auxiliary lifting components: Step 201: Drill holes at the marked installation positions on the concrete top slab and fix M+1 fully threaded suspension rods (2), and then thread keel hangers (3) through the M+1 fully threaded suspension rods (2); wherein the M+1 fully threaded suspension rods (2) are located in the same column at the outermost edge; Step 202, Install the main keel: Pass one end of a main keel (5) through a keel hanger (3), and then pass the hanger (6) of the P group of auxiliary hangers and multiple keel hangers (3) through the other end of the main keel (5), and sequentially thread the fully threaded hanger (2) into the concrete top slab on the multiple keel hangers (3); wherein, each group of auxiliary hangers includes at least two of the hangers (6); Step 203: Repeat step 202 multiple times until the installation of the main keel (5) of row M+1 is completed; Step 3: Assemble the mineral wool board: First, hang P left side sealing boards (16) on the T-shaped secondary keel (7) of the first row of auxiliary hangers. Then, hang the standard mineral wool boards (1) of M rows and P columns on the T-shaped secondary keels (7) of the second row to the M+1 row of auxiliary hangers. Then, hang P right side sealing boards (17) on the T-shaped secondary keel (7) of the M+1 row of auxiliary hangers to complete the assembly of the mineral wool board.

4. The method according to claim 3, characterized in that: In step three, the standard mineral wool board (1) is hung as follows: the auxiliary hanger is moved on the main keel (5) to a position away from the standard mineral wool board (1) to be installed, and the first support plate (10) is flipped upward first. Then, the auxiliary hanger closest to the standard mineral wool board (1) is moved to one end of the standard mineral wool board (1). The first support plate (10) of the auxiliary hanger is flipped to a horizontal state and inserted between the first standard hanging part (1-2) and the standard extension part (1-4). At this time, the second support plate (11) is also supported under the standard hanging part (1-3) to complete the hanging of a standard mineral wool board (1).

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