An assembled keel structure and its installation method

Abstract

The present invention belongs to the technical field of keels, and particularly relates to an assembled keel structure, which includes a longitudinal beam layer and a hoisting component for hoisting the longitudinal beam layer. There are several hoisting components, and several hoisting components are distributed in a rectangular array. The longitudinal beam layer includes longitudinals distributed at equal intervals. A first connecting component is fixedly connected inside the longitudinal beam and is distributed at equal intervals along the length direction of the longitudinal beam. The longitudinal beam is snap-connected to the bottom end of the hoisting component through the first connecting component. A second connecting component is arranged at the bottom end of the longitudinal beam layer and is distributed at equal intervals along the length direction of the longitudinal beam. In the present invention, the longitudinal beam is snap-mounted with the hoisting component through the first connecting component. During installation, only the rectangular block needs to be passed through the rectangular groove and then rotated to achieve connection, which is convenient for installation and improves the installation efficiency. The cross beam is snap-mounted with the longitudinal beam through the second connecting component, further improving the installation efficiency. No harmful substances are generated during the installation process of the entire keel.

Description

Technical Field

[0001] The invention belongs to the technical field of assembled keels, and particularly relates to an assembled keel structure and an installation method thereof. Background Technique

[0002] Ceiling keels are the main materials used for ceiling suspension. We often see ceilings, especially shaped ceilings, which are framed with keels and then covered with gypsum boards. The keels are connected to the hanging rods and provide installation nodes for the surface cover panels. They are components that play a connecting role in the ceiling. Ordinary non-accessible ceilings generally use wooden keels, steel sections, light steel keels or aluminum alloy keels; for the keels of accessible ceilings, due to high load-bearing requirements, steel sections or large-section wooden keels are used, and then a pedestrian passage is made on the keels.

[0003] When installing the light steel keels used in decoration, a welding machine is needed to weld the connection between the cross beam and the longitudinal beam. On the one hand, the welding operation at a high place is difficult and not convenient for the installation operation of the keels. On the other hand, the waste gas generated by welding is harmful to the health of workers and is not environmentally friendly enough. Summary of the Invention

[0004] The purpose of the invention is to provide an assembled keel structure and an installation method thereof, which replace the welding connection with a clamping connection during installation, are convenient for construction and are more environmentally friendly to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the invention provides the following technical solution: an assembled keel structure, including a longitudinal beam layer and a hoisting component for hoisting the longitudinal beam layer. There are several hoisting components, and several hoisting components are distributed in a rectangular array. The longitudinal beam layer includes longitudinals distributed at equal intervals. A first connecting component is fixedly connected inside the longitudinal beam and is distributed at equal intervals along the length direction of the longitudinal beam. The longitudinal beam is clamped and connected to the bottom end of the hoisting component through the first connecting component. A second connecting component is arranged at the bottom end of the longitudinal beam layer and is distributed at equal intervals along the length direction of the longitudinal beam. The bottom end of the longitudinal beam layer is clamped and connected with a cross beam through the second connecting component.

[0006] Further, the hoisting component includes a hanging rod, a C-shaped connecting frame is arranged at the bottom of the hanging rod, two nuts are threadedly connected to the bottom of the hanging rod, and the two nuts are respectively arranged on both sides of the top end of the C-shaped connecting frame. A rectangular groove matching with the first connecting component is opened at the bottom end of the C-shaped connecting frame.

[0007] Further, the first connecting component includes a base component fixedly connected to the bottom of the longitudinal beam. A positioning component is slidably connected inside the base component. A spring is arranged between the top of the base component and the top of the positioning component. A docking component is rotatably connected inside the positioning component.

[0008] Further, the base assembly includes a circular plate fixedly connected to the bottom end of the longitudinal beam. A base cylinder is fixedly connected to the top end of the circular plate. A second flange is fixedly connected to the top end of the base cylinder. A plurality of chutes are provided on the inner wall of the base cylinder at equal intervals around the axis of the base cylinder.

[0009] Further, the positioning assembly includes an insertion cylinder inserted into the base cylinder. A first flange is fixedly connected to the top end of the insertion cylinder. Two ends of the spring are respectively fixedly connected to the bottom end of the first flange and the top end of the second flange. A pair of protrusions are symmetrically arranged on the inner wall of the insertion cylinder.

[0010] Further, a plurality of sliding strips are fixedly connected to the outer wall of the insertion cylinder at equal intervals around the axis of the insertion cylinder. The sliding strips are slidably connected to the corresponding chutes.

[0011] Further, the docking assembly includes a connecting rod rotatably connected to the inside of the first flange. The bottom end of the connecting rod is rotatably connected to the middle of the circular plate through a bearing. The top of the connecting rod is rotatably connected to a cylinder through a bearing. The cylinder is fixedly connected to the top end of the longitudinal beam. A rectangular block is fixedly connected to the top end of the connecting rod. Two helical grooves are provided at the bottom of the side wall of the connecting rod and are centrosymmetric. A clamping groove is provided at one end of the helical groove. The protrusions are slidably connected to the helical grooves.

[0012] Further, the cross-section of the rectangular block is equal to the cross-section of the rectangular groove. A U-shaped clamping block is snap-fitted into the rectangular groove.

[0013] Further, the second connecting member includes an L-shaped plate fixedly connected to the bottom end of the longitudinal beam and a slot penetrating the side wall of the cross beam. The L-shaped plate penetrates through the slot. The second connecting member further includes a strip-shaped plate. A plurality of insertion posts are fixedly connected to the bottom end of the strip-shaped plate at equal intervals along the strip-shaped plate. A plurality of insertion holes are provided at the bottom end of the L-shaped plate. The insertion posts are snap-fitted into the corresponding insertion holes.

[0014] An installation method for an assembled keel structure includes the following steps:

[0015] S1: Install the hoisting components according to the on-site requirements, determine the distance between adjacent hoisting components, fix the top end of the suspender on the ceiling, then screw a nut onto the bottom of the suspender, then insert the C-shaped connecting frame onto the bottom of the suspender, and then screw on another nut to fix the C-shaped connecting frame. When installing the C-shaped connecting frame, pay attention to adjusting the height of the C-shaped connecting frame so that the bottom ends of a plurality of C-shaped connecting frames are at the same height;

[0016] S2: After several hoisting components are installed, install the longitudinal beam layer. Install one longitudinal beam at the bottom end of several C-shaped connecting frames in each row. When installing the longitudinal beam, align the first connecting component on the longitudinal beam with the rectangular slot at the bottom end of the C-shaped connecting frame, pass the rectangular block through the corresponding rectangular slot, and then rotate the rectangular block. After the rectangular block rotates, the connecting rod rotates accordingly, and the spiral groove on the surface of the connecting rod also rotates. After the spiral groove rotates, it drives the convex head to rise, thereby lifting the entire positioning component upward. During the upward lifting process of the positioning component, the tension spring is stretched. When the rectangular block rotates to be perpendicular to the rectangular slot, the convex head rises to the end of the spiral groove. Under the pulling force of the spring, the entire positioning component moves downward, and the convex head snaps into the corresponding card slot, thereby clamping and fixing the connecting rod to prevent the rectangular block from rotating back and causing the rectangular block to pass through the rectangular slot and resulting in connection failure;

[0017] S3: After the longitudinal beam is installed, snap the U-shaped block into the remaining gap in the rectangular slot to prevent the cylinder from moving back and forth inside the rectangular slot and improve the stability of the longitudinal beam;

[0018] S4: After the longitudinal beam layer is installed, install the cross beam. Pass the strip plate into the inside of the cross beam. When installing the cross beam, make several L-shaped plates in the same column penetrate through several slots on the cross beam one by one. Hang the cross beam at the bottom end of the longitudinal beam layer, and insert the insertion post into the jack on the corresponding L-shaped plate to prevent the cross beam from sliding out of the L-shaped plate. Install several cross beams in sequence according to the above method. When several cross beams are installed, the installation of the entire assembled keel structure is completed.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The longitudinal beam is clamped and installed with the hoisting component through the first connecting component. During installation, only need to pass the rectangular block through the rectangular slot and then rotate to achieve connection, which is convenient for installation and improves the installation efficiency. The cross beam is clamped and installed with the longitudinal beam through the second connecting component, further improving the installation efficiency. No harmful substances are generated during the installation process of the entire keel, which is relatively environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0021] Figure 2 is the present invention Figure 1 structural schematic diagram of partial A;

[0022] Figure 3 is a connection structure schematic diagram of the hoisting component and the longitudinal beam of the present invention;

[0023] Figure 4 is a front sectional view of the first connecting component of the present invention;

[0024] Figure 5 is an exploded view of the first connecting component of the present invention;

[0025] Figure 6 Schematic diagram of the installation structure of the crossbeam of the present invention;

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the structure of partial B.

[0027] In the drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Lifting component; 11. Suspension rod; 12. C-shaped connecting frame; 13. Nut; 14. Rectangular groove; 2. Longitudinal beam; 3. Crossbeam; 4. U-shaped clamping block; 5. First connecting component; 51. Docking component; 511. Link rod; 512. Spiral groove; 513. Card slot; 514. Cylinder; 515. Rectangular block; 52. Positioning component; 521. First flange; 522. Insertion cylinder; 523. Slide bar; 524. Convex head; 53. Spring; 54. Base component; 541. Circular plate; 542. Base cylinder; 543. Second flange; 544. Slide groove; 6. Second connecting component; 61. L-shaped plate; 62. Insertion slot; 63. Strip-shaped plate; 64. Insertion post; 65. Insertion hole. Detailed implementation manners

[0029] In order to make the purpose and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection specifically claimed by the present invention.

[0030] As shown in Figure 1 , 3 and 6, an assembled keel structure includes a longitudinal beam layer and a lifting component 1 for lifting the longitudinal beam layer. There are several lifting components 1, and several lifting components 1 are distributed in a rectangular array. The longitudinal beam layer includes longitudinally beams 2 that are equally spaced. Inside the longitudinally beam 2, first connecting components 5 that are equally spaced along the length direction of the longitudinally beam 2 are fixedly connected. The longitudinally beam 2 is snap-connected to the bottom end of the lifting component 1 through the first connecting component 5. At the bottom end of the longitudinal beam layer, second connecting components 6 that are equally spaced along the length direction of the longitudinally beam 2 are provided. The bottom end of the longitudinal beam layer is snap-connected with a crossbeam 3 through the second connecting component 6.

[0031] According to the above structure, the longitudinally beam 2 is snap-connected with the lifting component 1 through the first connecting component 5, which is convenient for installation and improves the installation efficiency. The crossbeam 3 is snap-connected with the longitudinally beam 2 through the second connecting component 6, further improving the installation efficiency.

[0032] As shown in Figure 3As shown in the figure, the hoisting component 1 includes a suspension rod 11. A C-shaped connecting frame 12 is provided at the bottom of the suspension rod 11. Two nuts 13 are threadedly connected to the bottom of the suspension rod 11, and the two nuts 13 are respectively arranged on both sides of the top end of the C-shaped connecting frame 12. A rectangular groove 14 for cooperating with the first connecting component 5 is provided at the bottom end of the C-shaped connecting frame 12.

[0033] According to the above structure, by adjusting the heights of the two nuts 13, the height of the C-shaped connecting frame 12 can be adjusted, and thus it can be ensured that the bottom ends of the C-shaped connecting frame 12 are at the same horizontal height, which is convenient for subsequent installation of the longitudinal beam 2.

[0034] As Figure 2 、 3 shown in Figures 4 and 5, the first connecting component 5 includes a base component 54 fixedly connected to the bottom of the longitudinal beam 2. A positioning component 52 is slidably connected inside the base component 54. A spring 53 is provided between the top of the base component 54 and the top of the positioning component 52. A docking component 51 is rotatably connected inside the positioning component 52. The base component 54 includes a circular plate 541 fixedly connected to the bottom end of the longitudinal beam 2. A base cylinder 542 is fixedly connected to the top end of the circular plate 541. A second flange 543 is fixedly connected to the top end of the base cylinder 542. A plurality of chutes 544 equidistantly distributed around the axis of the base cylinder 542 are provided on the inner wall of the base cylinder 542. The positioning component 52 includes an insertion cylinder 522 inserted inside the base cylinder 542. A first flange 521 is fixedly connected to the top end of the insertion cylinder 522. The two ends of the spring 53 are respectively fixedly connected to the bottom end of the first flange 521 and the top end of the second flange 543. A plurality of convex heads 524 are symmetrically arranged on the inner wall of the insertion cylinder 522. A plurality of sliding strips 523 equidistantly distributed around the axis of the insertion cylinder 522 are fixedly connected to the outer wall of the insertion cylinder 522. The sliding strips 523 are slidably connected inside the corresponding chutes 544. The docking component 51 includes a connecting rod 511 rotatably connected inside the first flange 521. The bottom end of the connecting rod 511 is rotatably connected to the middle of the circular plate 541 through a bearing. The top end of the connecting rod 511 is rotatably connected to a cylinder 514 through a bearing. The cylinder 514 is fixedly connected to the top end of the longitudinal beam 2. A rectangular block 515 is fixedly connected to the top end of the connecting rod 511. Two helical grooves 512 which are centrosymmetrically arranged are provided at the bottom of the side wall of the connecting rod 511. A clamping groove 513 is provided at one end of the helical groove 512. The convex heads 524 are slidably connected to the helical grooves 512. The cross-section of the rectangular block 515 is equal to the cross-section of the rectangular groove 14. A U-shaped clamping block 4 is clamped and connected inside the rectangular groove 14.

[0035] According to the above structure, when installing the longitudinal beam 2, align the first connecting component 5 on the longitudinal beam 2 with the rectangular slot 14 at the bottom end of the C-shaped connecting frame 12, pass the rectangular block 515 through the corresponding rectangular slot 14, and then rotate the rectangular block 515. After the rectangular block 515 rotates, the connecting rod 511 rotates accordingly. The spiral groove 512 on the surface of the connecting rod 511 also rotates. After the spiral groove 512 rotates, it drives the convex head 524 to rise, thereby lifting the positioning component 52 as a whole upward. During the upward movement of the positioning component 52, the tension spring 53 is stretched. When the rectangular block 515 rotates to be perpendicular to the rectangular slot 14, the convex head 524 rises to the end of the spiral groove 512. Under the pulling force of the spring 53, the positioning component 52 moves downward as a whole, and the convex head 524 is snapped into the corresponding card slot 513, thereby clamping and fixing the connecting rod 511 to prevent the rectangular block 515 from rotating back and causing the rectangular block 515 to pass through the rectangular slot 14 and resulting in connection failure. When the installation of the longitudinal beam 2 is completed, the U-shaped clamping block 4 is snapped into the remaining gap of the rectangular slot 14 to prevent the cylinder 514 from moving back and forth inside the rectangular slot 14, improving the stability of the longitudinal beam 2.

[0036] As Figure 6 and 7 shown, the second connecting component 6 includes an L-shaped plate 61 fixedly connected to the bottom end of the longitudinal beam 2 and a slot 62 penetrating the side wall of the cross beam 3. The L-shaped plate 61 penetrates the slot 62. The second connecting component 6 further includes a strip-shaped plate 63. The bottom end of the strip-shaped plate 63 is fixedly connected with insertion posts 64 evenly distributed along the strip-shaped plate 63. A jack 65 is opened at the bottom end of the L-shaped plate 61, and the insertion posts 64 are snap-connected inside the corresponding jacks 65.

[0037] According to the above structure, when installing the cross beam 3, make several L-shaped plates 61 in the same column penetrate through several slots 62 on the cross beam 3 one by one, hang the cross beam 3 at the bottom end of the longitudinal beam layer, and then insert the strip-shaped plate 63 into the inside of the cross beam 3, so that the insertion posts 64 are inserted into the jacks 65 on the corresponding L-shaped plates 61 to prevent the cross beam 3 from sliding out of the L-shaped plate 61. Install several cross beams 3 in sequence according to the above method. When the installation of several cross beams 3 is completed, the installation of the entire assembled keel structure is completed.

[0038] An installation method for an assembled keel structure includes the following steps:

[0039] S1: Install the hoisting component 1 according to the site requirements, determine the distance between adjacent hoisting components 1, fix the top end of the suspension rod 11 on the ceiling, then screw a nut 13 at the bottom of the suspension rod 11, and then insert the C-shaped connecting frame 12 at the bottom of the suspension rod 11, and screw on another nut 13 to fix the C-shaped connecting frame 12. When installing the C-shaped connecting frame 12, pay attention to adjusting the height of the C-shaped connecting frame 12 so that the bottom ends of several C-shaped connecting frames 12 are at the same height;

[0040] S2: After several hoisting components 1 are installed, install the longitudinal beam layer. Install one longitudinal beam 2 at the bottom of several C-shaped connecting frames 12 in each row. When installing the longitudinal beam 2, align the first connecting component 5 on the longitudinal beam 2 with the rectangular slot 14 at the bottom of the C-shaped connecting frame 12, so that the rectangular block 515 passes through the corresponding rectangular slot 14. Then rotate the rectangular block 515. After the rectangular block 515 rotates, the connecting rod 511 rotates accordingly. The spiral groove 512 on the surface of the connecting rod 511 also rotates. After the spiral groove 512 rotates, it drives the convex head 524 to rise, thereby lifting the positioning assembly 52 as a whole. During the upward movement of the positioning assembly 52, the spring 53 is stretched. When the rectangular block 515 rotates to be perpendicular to the rectangular slot 14, the convex head 524 rises to the end of the spiral groove 512. Under the pulling force of the spring 53, the positioning assembly 52 moves downward as a whole, and the convex head 524 is stuck into the corresponding card slot 513, thereby clamping and fixing the connecting rod 511 to prevent the rectangular block 515 from rotating back and causing the rectangular block 515 to pass through the rectangular slot 14 and resulting in connection failure;

[0041] S3: When the longitudinal beam 2 is installed, insert the U-shaped clamping block 4 into the remaining gap of the rectangular slot 14 to prevent the cylinder 514 from moving back and forth inside the rectangular slot 14 and improve the stability of the longitudinal beam 2;

[0042] S4: After the longitudinal beam layer is installed, install the cross beam 3. Insert the strip plate 63 into the inside of the cross beam 3. When installing the cross beam 3, make several L-shaped plates 61 in the same column pass through several slots 62 on the cross beam 3 one by one. Hang the cross beam 3 at the bottom of the longitudinal beam layer, and then insert the insertion post 64 into the jack 65 on the corresponding L-shaped plate 61 to prevent the cross beam 3 from sliding out from the long side of the L-shaped plate 61. Install several cross beams 3 in sequence according to the above method. When several cross beams 3 are installed, the installation of the entire assembled keel structure is completed.

[0043] The working principle of the present invention is as follows: When installing the longitudinal beam layer, install a longitudinal beam 2 at the bottom end of several C-shaped connecting frames 12 in each horizontal row. Align the first connecting component 5 on the longitudinal beam 2 with the rectangular groove 14 at the bottom end of the C-shaped connecting frame 12, so that the rectangular block 515 passes through the corresponding rectangular groove 14. Then rotate the rectangular block 515. After the rectangular block 515 rotates, the connecting rod 511 rotates accordingly. The spiral groove 512 on the surface of the connecting rod 511 also rotates. After the spiral groove 512 rotates, it drives the convex head 524 to rise, thereby lifting the positioning component 52 as a whole upward. During the upward lifting process of the positioning component 52, the tension spring 53 is stretched. When the rectangular block 515 rotates to be perpendicular to the rectangular groove 14, the convex head 524 rises to the end of the spiral groove 512. Under the pulling force of the spring 53, the positioning component 52 moves downward as a whole, and the convex head 524 is stuck into the corresponding card slot 513, thereby clamping and fixing the connecting rod 511 to prevent the rectangular block 515 from rotating back and causing the rectangular block 515 to pass through the rectangular groove 14 and resulting in connection failure. When the installation of the longitudinal beam 2 is completed, insert the U-shaped clamping block 4 into the remaining gap of the rectangular groove 14 to prevent the cylinder 514 from moving back and forth inside the rectangular groove 14 and improve the stability of the longitudinal beam 2. After the installation of the longitudinal beam layer is completed, install the cross beam 3. Insert the strip-shaped plate 63 into the inside of the cross beam 3. When installing the cross beam 3, make several L-shaped plates 61 in the same column penetrate through several slot holes 62 on the cross beam 3 one by one. Hang the cross beam 3 at the bottom end of the longitudinal beam layer, and then insert the insertion post 64 into the insertion hole 65 on the corresponding L-shaped plate 61 to prevent the cross beam 3 from sliding out from the L-shaped plate 61. Install several cross beams 3 in sequence according to the above method. When the installation of several cross beams 3 is completed, the installation of the entire assembled keel structure of the present invention is completed.

[0044] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specifically stated and limited, are implemented according to the conventional means in this field.

Claims

1. An assembled keel structure, comprising a longitudinal beam layer and a hoisting component (1) for hoisting the longitudinal beam layer, Characterized in that: There are several of the hoisting components (1), and several of the hoisting components (1) are distributed in a rectangular array. The longitudinal beam layer includes longitudinal beams (2) distributed at equal intervals. A first connecting component (5) is fixedly connected inside the longitudinal beam (2) and is distributed at equal intervals along the length direction of the longitudinal beam (2). The longitudinal beam (2) is snap-connected to the bottom end of the hoisting component (1) through the first connecting component (5). A second connecting component (6) is arranged at the bottom end of the longitudinal beam layer and is distributed at equal intervals along the length direction of the longitudinal beam (2). A cross beam (3) is snap-connected to the bottom end of the longitudinal beam layer through the second connecting component (6); The first connecting component (5) includes a base component (54) fixedly connected to the bottom of the longitudinal beam (2). A positioning component (52) is slidably connected inside the base component (54). A spring (53) is arranged between the top of the base component (54) and the top of the positioning component (52). A docking component (51) is rotatably connected inside the positioning component (52); The base component (54) includes a circular plate (541) fixedly connected to the bottom end of the longitudinal beam (2). A base cylinder (542) is fixedly connected to the top end of the circular plate (541). A second flange (543) is fixedly connected to the top end of the base cylinder (542). A chute (544) is arranged on the inner wall of the base cylinder (542) and is distributed at equal intervals around the axis of the base cylinder (542); The positioning component (52) includes an insertion cylinder (522) inserted inside the base cylinder (542). A first flange (521) is fixedly connected to the top end of the insertion cylinder (522). The two ends of the spring (53) are respectively fixedly connected to the bottom end of the first flange (521) and the top end of the second flange (543). Convex heads (524) are symmetrically arranged on the inner wall of the insertion cylinder (522). Slide bars (523) are fixedly connected to the outer wall of the insertion cylinder (522) and are distributed at equal intervals around the axis of the insertion cylinder (522). The slide bars (523) are slidably connected inside the corresponding chutes (544); The docking component (51) includes a connecting rod (511) rotatably connected inside the first flange (521). The bottom end of the connecting rod (511) is rotatably connected to the middle of the circular plate (541) through a bearing. The top end of the connecting rod (511) is rotatably connected to a cylinder (514) through a bearing. The cylinder (514) is fixedly connected to the top end of the longitudinal beam (2). A rectangular block (515) is fixedly connected to the top end of the connecting rod (511). Two helical grooves (512) that are centrosymmetrically arranged are opened at the bottom of the side wall of the connecting rod (511). A clamping groove (513) is opened at one end of the helical groove (512). The convex head (524) is slidably connected to the helical groove (512); 2. The assembled keel structure according to claim 1, Characterized in that: The hoisting component (1) includes a suspension rod (11). A C-shaped connecting frame (12) is provided at the bottom of the suspension rod (11). Two nuts (13) are threadedly connected to the bottom of the suspension rod (11). The two nuts (13) are respectively arranged on both sides of the top end of the C-shaped connecting frame (12). A rectangular groove (14) for mating with the first connecting component (5) is formed at the bottom end of the C-shaped connecting frame (12).

3. The prefabricated keel structure according to claim 2, characterized in that: The cross-section of the rectangular block (515) is equal to the cross-section of the rectangular groove (14). A U-shaped clamping block (4) is clamped and connected inside the rectangular groove (14).

4. The prefabricated keel structure according to claim 3, characterized in that: The second connecting component (6) includes an L-shaped plate (61) fixedly connected to the bottom end of the longitudinal beam (2) and a slot (62) penetrating the side wall of the cross beam (3). The L-shaped plate (61) penetrates through the slot (62). The second connecting component (6) further includes a strip-shaped plate (63). Plug columns (64) are fixedly connected to the bottom end of the strip-shaped plate (63) and are evenly distributed along the strip-shaped plate (63). A jack (65) is formed at the bottom end of the L-shaped plate (61). The plug column (64) is clamped and connected inside the corresponding jack (65).

5. An installation method for a prefabricated keel structure, characterized in that: used for installing the prefabricated keel structure according to claim 4, and includes the following steps: S1: Install the hoisting component (1) according to the on-site requirements, determine the distance between adjacent hoisting components (1), fix the top end of the suspension rod (11) on the ceiling, then screw on a nut (13) at the bottom of the suspension rod (11), then insert the C-shaped connecting frame (12) at the bottom of the suspension rod (11), and then screw on another nut (13) to fix the C-shaped connecting frame (12). When installing the C-shaped connecting frame (12), pay attention to adjusting the height of the C-shaped connecting frame (12) so that the bottom ends of several C-shaped connecting frames (12) are at the same height; S2: After several hoisting components (1) are installed, install the longitudinal beam layer. Install a longitudinal beam (2) at the bottom end of several C-shaped connecting frames (12) in each row. When installing the longitudinal beam (2), align the first connecting component (5) on the longitudinal beam (2) with the rectangular slot (14) at the bottom end of the C-shaped connecting frame (12), so that the rectangular block (515) passes through the corresponding rectangular slot (14), and then rotate the rectangular block (515). After the rectangular block (515) rotates, the connecting rod (511) rotates accordingly, and the spiral groove (512) on the surface of the connecting rod (511) also rotates. After the spiral groove (512) rotates, it drives the convex head (524) to rise, thereby lifting the entire positioning component (52) upward. During the upward movement of the positioning component (52), the tension spring (53) is stretched. When the rectangular block (515) rotates to be perpendicular to the rectangular slot (14), the convex head (524) rises to the end of the spiral groove (512). Under the pulling force of the spring (53), the entire positioning component (52) moves downward, and the convex head (524) is stuck into the corresponding card slot (513) to clamp and fix the connecting rod (511), preventing the rectangular block (515) from rotating back and causing the rectangular block (515) to pass through the rectangular slot (14) and resulting in connection failure; S3: When the longitudinal beam (2) is installed, insert the U-shaped clamping block (4) into the remaining gap of the rectangular slot (14) to prevent the cylinder (514) from moving back and forth inside the rectangular slot (14) and improve the stability of the longitudinal beam (2); S4: After the longitudinal beam layer is installed, install the cross beam (3). Pass the strip plate (63) into the inside of the cross beam (3). When installing the cross beam (3), make several L-shaped plates (61) in the same column penetrate through several slots (62) on the cross beam (3) one by one. Hang the cross beam (3) at the bottom end of the longitudinal beam layer, and insert the insertion post (64) into the insertion hole (65) on the corresponding L-shaped plate (61) to prevent the cross beam (3) from sliding out of the L-shaped plate (61). Install several cross beams (3) in sequence according to the above method. When several cross beams (3) are installed, the installation of the entire assembled keel structure is completed.

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