Light steel gypsum board suspended ceiling structure and construction technology thereof

Abstract

The application provides a light steel gypsum board suspended ceiling structure and a construction process thereof, and relates to the field of building suspended ceilings. The structure comprises a main keel and a secondary keel connected by a connecting piece, a gypsum board is locked on the bottom of the secondary keel by self-tapping screws, the top of the gypsum board is attached to the two sides of the bottom of the secondary keel and there is a gap in the center of the bottom of the secondary keel, a pair of convex strips are symmetrically arranged on the inner wall of the secondary keel, an auxiliary plate is inserted into the secondary keel, a pair of recesses are symmetrically arranged on the two sides of the auxiliary plate, and a pair of the convex strips are respectively and one-to-one correspondingly clamped in the pair of recesses. The upper part of the self-tapping screw is screwed into the auxiliary plate, and the lower part is screwed into the gypsum board and the secondary keel. The application has the effects of improving the connection reliability between the gypsum board and the secondary keel and preventing the misplacement or falling of the gypsum board.

Description

TECHNICAL FIELD

[0001] The application relates to the field of building suspended ceilings, in particular to a light steel keel gypsum board suspended ceiling structure and a construction process thereof. BACKGROUND

[0002] The light steel keel is a new type of building material, which has the advantages of light weight, high strength, waterproofness, shock resistance, dust prevention, sound insulation, sound absorption, constant temperature, short construction period and simple construction.

[0003] At present, when the light steel keel is installed, first, the suspender is fixed on the floor through the expansion bolt, then the suspender and the main keel and the main keel and the auxiliary keel are connected through the connecting piece, then the gypsum board is fixed on the auxiliary keel through the self-tapping screw, and finally the joint is filled and painted.

[0004] However, the gypsum board and the auxiliary keel are only connected through the self-tapping screw, and under the influence of the gravity of the gypsum board and the paint, the connection tightness between the gypsum board and the auxiliary keel will change, thereby causing the dislocation of the gypsum board, cracks, even the whole rupture and falling off. SUMMARY

[0005] In order to improve the poor tightness between the gypsum board and the auxiliary keel, the application provides a light steel keel gypsum board suspended ceiling structure and a construction process thereof.

[0006] In the first aspect, the application provides a light steel keel gypsum board suspended ceiling structure, which adopts the following technical scheme:

[0007] The light steel keel gypsum board suspended ceiling structure comprises a main keel and an auxiliary keel connected through a connecting piece, a gypsum board is locked on the bottom of the auxiliary keel through a self-tapping screw, the top of the gypsum board is attached to both sides of the bottom of the auxiliary keel and there is a gap in the center of the bottom of the auxiliary keel, a pair of convex strips are symmetrically arranged on the inner wall of the auxiliary keel, an auxiliary plate is inserted into the auxiliary keel, a pair of recesses are symmetrically arranged on both sides of the auxiliary plate, and a pair of the convex strips are respectively and one-to-one clamped in the pair of recesses.

[0008] By adopting the above technical scheme, the auxiliary plate is placed into the auxiliary keel before installation, the convex strip is clamped into the recess of the auxiliary plate, the fixing of the auxiliary plate is realized, and the self-tapping screw is screwed in, so that the upper part of the self-tapping screw is screwed into the auxiliary plate, the lower part of the self-tapping screw is screwed into the gypsum board and the auxiliary keel, the original state of the upper part of the self-tapping screw being suspended is changed, the locking effect of the self-tapping screw is more reliable, the gravity that can be borne is also strengthened, the connection tightness between the gypsum board and the auxiliary keel is effectively improved, and the displacement and falling off of the gypsum board are prevented.

[0009] Preferably, a plurality of springs are arranged between the auxiliary plate and the auxiliary keel, and the springs are in a stretched state when the convex strips are embedded in the concave grooves.

[0010] By using the above technical scheme, after the auxiliary plate is clamped between a pair of convex strips, the springs are in a stretched state and have a tendency to pull the auxiliary plate downward, thereby ensuring the clamping firmness of the auxiliary plate on the auxiliary keel, ensuring that the upper part of the self-tapping screw does not loosen after being screwed into the auxiliary plate, and thereby improving the stability of the self-tapping screw, avoiding movement of the self-tapping screw under the gravity of the gypsum board, and ensuring that the self-tapping screw can reliably lock the gypsum board at the bottom of the auxiliary keel.

[0011] Preferably, the self-tapping screw comprises an upper threaded part, a smooth rod part, and a lower threaded part, the length of the smooth rod part is greater than the sum of the thicknesses of the gypsum board and the auxiliary keel, and a sealant is further arranged between the auxiliary plate and the auxiliary keel, the bottom of the auxiliary keel is provided with a plurality of through holes, and the sealant flows into the gap through the through holes.

[0012] By using the above technical scheme, when the upper threaded part is screwed into the auxiliary plate, the top of the smooth rod part is located in the auxiliary keel, the bottom is located below the gypsum board, and the lower threaded part is away from the gypsum board. In this way, by pulling the self-tapping screw downward, the auxiliary plate can overcome the limiting action of the convex strips and move downward while being connected to the upper threaded part. During the downward movement of the auxiliary plate, the auxiliary plate is subjected to the downward pulling force of the self-tapping screw and the downward pulling force generated by the retraction of the spring, and then the auxiliary plate will push the sealant, so that the sealant flows from the through holes into the gap between the gypsum board and the auxiliary keel, thereby improving the firmness of the connection between the gypsum board and the auxiliary keel through adhesion.

[0013] Preferably, the sealant is arranged in a storage bag, the bottom of the storage bag is connected to the auxiliary keel, and the top is attached to the bottom of the auxiliary plate. The upper threaded part interferes with the storage bag during the process of being screwed into the auxiliary plate.

[0014] By using the above technical scheme, the storage bag is used to store the sealant, which can prevent the sealant from solidifying when the ceiling is not installed, and the sealant can be transferred into the auxiliary keel through simple insertion operation, thereby improving the installation efficiency. During the process of the upper threaded part penetrating the auxiliary keel and being screwed into the auxiliary plate, the upper threaded part will pierce the storage bag, thereby automatically releasing the sealant in the storage bag.

[0015] Preferably, the storage bag is arranged at the middle of the auxiliary keel and extends along the length direction of the auxiliary keel, and the spring is arranged outside the storage bag.

[0016] By adopting the technical scheme, the upper threaded part can contact and pierce the storage bag during rotation.

[0017] Preferably, the outer diameter of the upper threaded part is the same as the outer diameter of the lower threaded part, the upper threaded part sequentially passes through the gypsum board and the secondary batten and forms a pair of through holes with the same inner diameter and coaxially arranged on the gypsum board and the secondary batten, and the inner diameter of the through hole is greater than the outer diameter of the light rod part.

[0018] By adopting the technical scheme, when the light rod part is located in the pair of through holes, the self-tapping screw can be moved up and down as a whole and does not contact the gypsum board and the secondary batten, facilitating the self-tapping screw to pull the auxiliary plate, and after pulling is completed, the lower threaded part is adaptively screwed into the gypsum board and the secondary batten; secondly, the sealant can enter the through hole, and the connection reliability between the lower threaded part and the gypsum board can be improved when the lower threaded part is screwed in.

[0019] Preferably, the outer wall of the light rod part is provided with a plurality of through grooves, and the plurality of through grooves are arranged at intervals and extend along the axial direction of the light rod part.

[0020] By adopting the technical scheme, the sealant can flow into the through hole through the through groove and adhere to the threads of the lower threaded part, thereby improving the connection strength between the gypsum board and the lower threaded part after the lower threaded part is screwed into the gypsum board.

[0021] Preferably, the opposite sides of the pair of convex strips are provided with arc chamfers facilitating the recess to be clamped in and moved out.

[0022] By adopting the technical scheme, the difficulty of clamping or moving out the auxiliary plate can be reduced, the auxiliary plate can be reliably limited by the pair of convex strips, and damage of the auxiliary plate during movement can be prevented.

[0023] Preferably, the connecting piece includes a hanging rod, a first hanging piece, and a second hanging piece, one end of the hanging rod is connected to the floor layer through an expansion bolt, the other end of the hanging rod is connected to the first hanging piece, the main batten is adaptively clamped in the first hanging piece, the main batten and the secondary batten are connected through the second hanging piece, and the main batten and the secondary batten are perpendicular to each other.

[0024] By adopting the technical scheme, the cooperation of the hanging rod and the first hanging piece realizes the fixation of the main batten, the second hanging piece realizes the fixation of the secondary batten, and it is ensured that the main batten and the secondary batten can bear the hoisting of multiple gypsum boards after installation is completed.

[0025] In a second aspect, the application provides a construction process of a light steel batten gypsum board suspended ceiling structure, which adopts the following technical scheme:

[0026] The construction process of the light steel gypsum board suspended ceiling structure comprises the following steps:

[0027] S1, adhering the storage bag to the auxiliary batten, and then clamping the auxiliary plate between the pair of convex strips;

[0028] S2, fixing one end of the suspender to the floor slab through the expansion bolt, and then sequentially installing the main batten and the auxiliary batten through the connecting piece;

[0029] S3, attaching the gypsum board to the auxiliary batten, and drilling the self-tapping screw, so that the self-tapping screw sequentially penetrates the gypsum board, the auxiliary batten and the auxiliary plate;

[0030] S4, in the process of drilling the self-tapping screw, the storage bag is pierced, and the sealant in the storage bag flows out and flows into the gap between the auxiliary batten and the gypsum board through the through hole;

[0031] S5, painting on the gypsum board, and after natural air drying, the suspended ceiling is completed.

[0032] By adopting the above technical scheme, the sealant is used to fix the gypsum board and the auxiliary batten while the gypsum board is installed on the auxiliary batten through the self-tapping screw, which effectively improves the connection reliability of the gypsum board on the auxiliary batten and prevents the gypsum board from being misaligned or even falling off.

[0033] In summary, the present application has the following advantages:

[0034] 1. By setting the clamped auxiliary plate in the auxiliary batten, the stability of the self-tapping screw is improved after the upper threaded part of the self-tapping screw is screwed into the auxiliary plate, thereby improving the locking effect of the gypsum board.

[0035] 2. In the process of screwing the upper threaded part of the self-tapping screw into the auxiliary plate, the storage bag is pierced, and then the sealant in the storage bag penetrates into the gap between the gypsum board and the auxiliary batten through the through hole, thereby improving the fixing effect of the gypsum board on the auxiliary batten and preventing the gypsum boards from being misaligned or even falling off.

[0036] 3. When the upper threaded part of the self-tapping screw is screwed into the auxiliary plate and the light rod part is located in the perforation, the self-tapping screw is pulled down, and under the clamping effect of the auxiliary plate and the convex strip, it continues to move downward and realizes the extrusion of the sealant, thereby increasing the overflow amount of the sealant, reducing the spreading time of the sealant, improving the work efficiency, effectively preventing the sealant from curing in advance, and ensuring that the sealant can improve the fixing effect of the gypsum board and the auxiliary batten. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a schematic perspective view of the present application;

[0038] Figure 2is a schematic perspective view of the connecting frame in the present application;

[0039] Figure 3 is a schematic view of the assembled state of the sub-keel and the gypsum board;

[0040] Figure 4 is Figure 1 a schematic partial enlarged view at A in the figure;

[0041] Figure 5 is a schematic perspective view of the self-tapping screw;

[0042] Figure 6 is Figure 3 a reference to the action state of Figure 1 ;

[0043] Figure 7 is Figure 3 a reference to the action state of Figure 2 ;

[0044] In the figure: 1, connecting piece; 11, hanger rod; 12, first hanger; 13, second hanger; 2, main keel; 3, sub-keel; 31, convex strip; 32, through hole; 33, through hole; 4, gypsum board; 5, self-tapping screw; 51, upper threaded part; 52, smooth rod part; 520, through slot; 53, lower threaded part; 6, gap; 7, auxiliary plate; 70, groove; 8, spring; 9, storage bag. DETAILED DESCRIPTION

[0045] The present application will be further described below in conjunction with the accompanying Figures 1-7 .

[0046] The embodiment discloses a light steel keel gypsum board suspended ceiling structure.

[0047] Figure 1 is a schematic perspective view of the present application, Figure 2 is a schematic perspective view of the connecting frame in the present application. Referring to Figure 1 and Figure 2 , the light steel keel gypsum board 4 suspended ceiling structure comprises a main keel 2 and a sub-keel 3 connected through a connecting piece 1, the connecting piece 1 comprises a hanger rod 11, a first hanger 12 and a second hanger 13, the hanger rod 11 is fixed on a floor layer through an expansion bolt, meanwhile, the hanger rod 11 and the first hanger 12 cooperate to realize the fixation of the main keel 2, and the connection and fixation of the main keel 2 and the sub-keel 3 are realized through the connecting action of the second hanger 13, so that the main keel 2 and the sub-keel 3 constitute a firm mounting base, then the gypsum board 4 is supported, so that the top of the gypsum board 4 is in contact with the bottom of the sub-keel 3, and the self-tapping screw 5 is used to realize the fixation of the gypsum board 4 at the bottom of the sub-keel 3.

[0048] The connection piece 1 composed of the boom 11, the first lifting piece 12 and the second lifting piece 13 is used to build and fix the grid-shaped installation base formed by the main keel 2 and the secondary keel 3, and then the gypsum board 4 is preliminarily fixed on the secondary keel 3 by the self-tapping screw 5 penetrating through the gypsum board 4 and the secondary keel 3 in sequence.

[0049] Figure 3 is a schematic view of the assembly state of the secondary keel 3 and the gypsum board 4, Figure 4 is Figure 1 the schematic enlarged view of A in FIG. 4. Referring to Figure 3 and Figure 4 The inner wall of the secondary keel 3 is symmetrically provided with a pair of convex strips 31, and the opposite sides of the pair of convex strips 31 are respectively provided with a circular arc chamfer. The secondary keel 3 is further provided with an auxiliary plate 7 and a plurality of springs 8, the plurality of springs 8 are arranged between the auxiliary plate 7 and the secondary keel 3, the two sides of the auxiliary plate 7 are respectively provided with a recess 70, and the pair of recesses 70 are adaptively sleeved outside the pair of convex strips 31. A long strip-shaped storage bag 9 filled with sealant is arranged between the plurality of springs 8, the storage bag 9 extends along the length direction of the secondary keel 3 and covers the upper part of the driving direction of the self-tapping screw 5, and the bottom of the secondary keel 3 is provided with a plurality of through holes 32. The sealant in the storage bag 9 flows into the gap 6 between the gypsum board 4 and the secondary keel 3 through the through holes 32.

[0050] When the upper part of the self-tapping screw 5 penetrates through the gypsum board 4 and the secondary keel 3, it will continue to rotate upward and be screwed into the auxiliary plate 7. Through the connection between the self-tapping screw 5 and the auxiliary plate 7, the stability of the self-tapping screw 5 is improved, which can prevent the self-tapping screw 5 from loosening under the gravity of the gypsum board 4. Further, in the process of screwing the self-tapping screw 5 into the auxiliary plate 7, the storage bag 9 will be pierced, causing the sealant in the storage bag 9 to flow downward through the through holes 32, filling the gap 6 between the gypsum board 4 and the secondary keel 3. The auxiliary fixing of the gypsum board 4 and the secondary keel 3 is realized through the sealant, which significantly improves the firmness of the gypsum board 4 fixed on the secondary keel 3, avoiding the mutual misplacement or even falling off of the gypsum boards 4. The storage bag 9 is arranged between the plurality of springs 8, which can ensure that the rotation of the upper threaded part 51 can pierce the storage bag 9, and on the other hand, it can ensure that a sufficient number of through holes 32 are always in an exposed state and are not covered by the storage bag 9. In this way, it is ensured that the sealant can reliably flow into the gap 6 through the through holes 32.

[0051] Figure 5 is a schematic perspective view of the self-tapping screw 5. Referring to Figure 5, the self-tapping screw 5 includes an upper threaded portion 51, a light pole portion 52 and a lower threaded portion 53, the outer diameter of the upper threaded portion 51 is the same as the outer diameter of the lower threaded portion 53, the outer diameter of the upper threaded portion 51 is greater than the outer diameter of the light pole portion 52, after the upper threaded portion 51 drills through the gypsum board 4 and the secondary keel 3, a pair of coaxial and equal-diameter through holes 33 are formed, the outer diameter of the light pole portion 52 is smaller than the inner diameter of the through hole 33, a plurality of vertical through grooves 520 are arranged on the outer wall of the light pole portion 52 at intervals, the length of the light pole portion 52 is greater than the sum of the thickness of the gypsum board 4 and the thickness of the secondary keel 3, and the length of the lower threaded portion 53 is not less than the distance between the bottom of the gypsum board 4 and the inner bottom of the secondary keel 3, that is, the lower threaded portion 53 can completely fill the pair of through holes 33, so that the contact area between the gypsum board 4, the secondary keel 3 and the lower threaded portion 53 is maximized, thereby improving the connection strength of the gypsum board 4 on the secondary keel 3; further, through reasonable configuration of the lengths of the upper threaded portion 51, the light pole portion 52 and the lower threaded portion 53 and the clamping position of the auxiliary plate 7, it is ensured that the upper threaded portion 51 can always be in a threaded connection state with the auxiliary plate 7, and there is enough distance between the bottom of the upper threaded portion 51 and the inner bottom of the secondary keel 3 for the downward movement of the auxiliary plate 7 and the storage bag 9.

[0052] Referring to Figure 3 In the process of rotating the upper threaded portion 51 upward and passing through the gypsum board 4 and the secondary keel 3, two coaxially arranged through holes 33 with the same inner diameter are formed on the gypsum board 4 and the secondary keel 3, and then the upper threaded portion continues to rotate upward and pierces the storage bag 9, at this time, the light pole portion 52 is located in the pair of through holes 33, and there is still a distance between the lower threaded portion 53 and the bottom of the gypsum board 4. After the storage bag 9 is pierced, the sealant in the storage bag 9 flows into the secondary keel 3, part of which flows into the gap 6 between the secondary keel 3 and the gypsum board 4 through the through hole 32, so that the gypsum board 4 and the secondary keel 3 can be connected by the sealant in addition to being locked by the self-tapping screw 5, thereby maximizing the connection tightness between the gypsum board 4 and the secondary keel 3; another part flows downward through the through grooves 520 of the light pole portion 52 and continues to flow downward and adhere to the surface of the lower threaded portion 53 after filling the pair of through holes 33, so that after the lower threaded portion 53 is screwed into the corresponding through holes 33 of the gypsum board 4 and the secondary keel 3, the sealant in the through holes 33 and the sealant on the surface of the lower threaded portion 53 can completely fill the gap between the lower threaded portion 53 and the pair of through holes 33, thereby further improving the connection tightness between the self-tapping screw 5 and the gypsum board 4 and the secondary keel.

[0053] And in the process of the upper threaded part 51 rotating towards the auxiliary plate 7 and piercing the storage bag 9, the surface of the upper threaded part 51 will also adhere to the sealant, so that after the upper threaded part 51 is screwed into the auxiliary plate 7, the connection strength between the upper threaded part 51 and the auxiliary plate 7 can also be improved through the sealant; the application releases and cures the sealant during the installation of the gypsum board 4 by pre-placing the storage bag 9 containing the sealant, compared with directly applying the sealant between the gypsum board 4 and the secondary batten 3, the sealant in the application will form a special-shaped structure after curing, part of which is in the secondary batten 3, part of which is in the through hole 32, and part of which is in the gap 6 between the gypsum board 4 and the secondary batten 3, so that the sealant forms a hooking effect on the gypsum board 4, that is, the sealant only needs to be tightly glued with the gypsum board 4 to realize the fixation of the gypsum board 4 on the secondary batten 3, which expands the selection range of the sealant, and the sealant needs to be in a glued state with the gypsum board 4 and the secondary batten 3 which are different in material.

[0054] Figure 6 is Figure 3 the action state reference Figure 1 . Referring to Figure 6 , when the upper threaded part 51 is screwed into the auxiliary plate 7 and the light rod part 52 is located in a pair of through holes 33, the self-tapping screw 5 does not come into contact with the gypsum board 4 and the secondary batten 3, the rotation of the upper threaded part 51 and the lower threaded part 53 is stopped, and the lower threaded part 53 is pulled downward, at this time, the groove 70 of the auxiliary plate 7 and the convex strip 31 of the secondary batten 3 are in the engaged state, under the pulling action of the lower threaded part 53 and the contraction action of the spring 8, the auxiliary plate 7 will break through the limiting action of the convex strip 31, so that the groove 70 and the convex strip 31 are separated from each other, in this way, the auxiliary plate 7 will continue to move downward under the pulling action of the lower threaded part 53, which improves the flow speed of the sealant, expands the overflow amount of the sealant from the through hole 32 or the through hole 33, and further improves the laying area of the sealant between the gypsum board 4 and the secondary batten 3, thereby improving the tightness of the adhesion of the gypsum board 4 and the secondary batten 3.

[0055] Figure 7 is Figure 3 the action state reference Figure 2 . Referring to Figure 6After the auxiliary plate 7 moves downward and the spring 8 changes from the stretched state to the fully compressed state, the auxiliary plate 7 reaches the lower limit position of the movement, and the overflow amount of the sealant reaches the maximum. At this time, the lower threaded part 53 is pushed upward to reset the auxiliary plate 7. After the groove 70 of the auxiliary plate 7 and the protrusion 31 of the secondary batten 3 are re-engaged, the action on the lower threaded part 53 changes from pushing to rotating. Thus, the lower threaded part 53 is screwed into the perforation 33. Since the outer diameters of the upper threaded part 51 and the lower threaded part 53 are the same, after the lower threaded part 53 is screwed into the pair of perforations 33, the lower threaded part 53 can fix the gypsum board 4 and the secondary batten 3. Meanwhile, the light rod part 52 is located between the auxiliary plate 7 and the secondary batten 3, and the upper threaded part 51 remains screwed into the auxiliary plate 7. Thus, the upper threaded part 51 and the lower threaded part 53 both have corresponding engagement and fastening positions, which can reliably improve the fixing effect of the gypsum board 4 and the secondary batten 3, and prevent the gypsum board 4 from being dislocated or falling off to the maximum extent under the adhesion of the sealant.

[0056] The embodiment also discloses a construction process of the light steel batten gypsum board 4 suspended ceiling structure.

[0057] The construction process of the light steel batten gypsum board 4 suspended ceiling structure comprises the following steps:

[0058] S1, the storage bag 9 is adhered to the inner bottom of the secondary batten 3 and laid along the length direction of the secondary batten 3, and then is placed in the secondary batten 3 in an inclined state, so that the groove 70 on one side of the auxiliary plate 7 and the protrusion 31 on one side of the secondary batten 3 are first engaged, and then the other side of the auxiliary plate 7 is pressed down, so that the groove 70 on the other side of the auxiliary plate 7 and the protrusion 31 on the other side of the secondary batten 3 are engaged;

[0059] S2, anchor holes are drilled in the floor layer according to design parameters, the expansion bolts on one end of the suspender 11 are inserted into the corresponding anchor holes, the expansion bolts are tightened to fix the suspender 11, a horizontal line is drawn on the suspender 11 by using a laser level, the first hanger 12 is installed at the height of the horizontal line, the main batten 2 is placed in the first hanger 12, the main batten 2 is installed after the first hanger 12 is locked, the lower part of the second hanger 13 is clamped into the secondary batten 3, and the upper part of the second hanger 13 is connected with the main batten 2, and the secondary batten 3 is installed;

[0060] S3, the gypsum board 4 is attached to the secondary batten 3, and the self-tapping screw 5 is drilled, so that the upper threaded part 51 of the self-tapping screw 5 passes through the gypsum board 4, the secondary batten 3 and the auxiliary plate 7 in sequence;

[0061] S4, the upper threaded part 51 of the self-tapping screw 5 will pierce the storage bag 9 during drilling, and the sealant in the storage bag 9 will flow out and flow into the gap 6 between the auxiliary batten 3 and the gypsum board 4 through the through hole 32; after the upper threaded part 51 of the self-tapping screw 5 is drilled into the auxiliary plate 7, the light rod part 52 is located in a pair of perforations 33, the lower threaded part 53 of the self-tapping screw 5 is pulled down, and the auxiliary plate 7 is moved downward, and after breaking through the limiting action of the protruding strip 31, the sealant is pressed into the gap 6 between the gypsum board 4 and the auxiliary batten 3 and a pair of perforations 33;

[0062] After the spring 8 is completely compressed by the auxiliary plate 7, the lower threaded part 53 of the self-tapping screw 5 is pushed up, the auxiliary plate 7 is engaged with the protruding strip 31 again, the lower threaded part 53 of the self-tapping screw 5 is rotated, so that the lower threaded part 53 of the self-tapping screw 5 is screwed into a pair of perforations 33, the light rod part 52 is in a suspended state, the upper threaded part 51 of the self-tapping screw 5 is still screwed into the auxiliary plate 7, and the fixing of the gypsum board 4 on the auxiliary batten 3 is completed.

[0063] S5, different coatings are applied to the gypsum board 4 in batches, and the ceiling is completed after natural air drying.

[0064] The construction process of the light steel batten gypsum board 4 ceiling structure in the application is optimized, the release and flow of the sealant in the storage bag 9 are realized during locking the gypsum board 4 and the auxiliary batten 3 by the self-tapping screw 5, so that the sealant enters the gap 6 between the gypsum board 4 and the auxiliary batten 3, and then the gypsum board 4 and the auxiliary batten 3 are fixed by the sealant. At the same time, the sealant will enter a pair of perforations 33, and after the self-tapping screw 5 is tightened, the connection strength between the self-tapping screw 5 and the gypsum board 4, the self-tapping screw 5 and the auxiliary batten 3, and the self-tapping screw 5 and the auxiliary plate 7 can be supplemented by the sealant, which significantly improves the fixing effect of the self-tapping screw 5 on the gypsum board 4, prevents the self-tapping screw 5 from being dislocated or even falling off due to insufficient locking force under the gravity of the gypsum board 4, and maximizes the durability of the gypsum board 4 ceiling structure.

[0065] The above are preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A light steel keel gypsum board ceiling structure, comprising a main keel (2) and a secondary keel (3) connected by connectors (1), wherein gypsum board (4) is secured to the bottom of the secondary keel (3) by self-tapping screws (5), characterized in that, The top of the gypsum board (4) is attached to the bottom sides of the secondary keel (3) and there is a gap (6) between the top of the gypsum board (4) and the bottom center of the secondary keel (3); The inner wall of the secondary keel (3) is symmetrically provided with a pair of protruding strips (31), and an auxiliary plate (7) is inserted into the secondary keel (3). The auxiliary plate (7) is symmetrically provided with a pair of grooves (70) on both sides. The pair of protruding strips (31) are respectively and correspondingly locked in the pair of grooves (70). The upper part of the self-tapping screw (5) is screwed into the auxiliary plate (7), and the lower part is screwed into the plasterboard (4) and the secondary keel (3); A plurality of springs (8) are provided between the auxiliary plate (7) and the secondary keel (3). When the protrusion (31) is embedded in the groove (70), the springs (8) are in a stretched state. A long strip-shaped storage bag (9) filled with sealant is also provided between the plurality of springs (8). The self-tapping screw (5) includes an upper threaded portion (51), a smooth shank portion (52) and a lower threaded portion (53), wherein the length of the smooth shank portion (52) is greater than the sum of the thicknesses of the gypsum board (4) and the secondary keel (3); A sealant is provided between the auxiliary plate (7) and the secondary keel (3). The bottom of the secondary keel (3) is provided with several through holes (32), and the sealant flows into the gap (6) through the through holes (32).

2. The light steel keel gypsum board ceiling structure according to claim 1, characterized in that, The sealant is placed inside the storage bag (9), and the bottom of the storage bag (9) is connected to the secondary keel (3), and the top is attached to the bottom of the auxiliary plate (7); Interference occurs between the upper threaded portion (51) and the storage bag (9) during the process of drilling into the auxiliary plate (7).

3. The light steel keel gypsum board ceiling structure according to claim 1, characterized in that, The storage bag (9) is located in the middle of the secondary keel (3) and extends along the length of the secondary keel (3), and the spring (8) is located on the outside of the storage bag (9).

4. The light steel keel gypsum board ceiling structure according to claim 1, characterized in that, The outer diameter of the upper threaded part (51) is the same as the outer diameter of the lower threaded part (53). The upper threaded part (51) passes through the gypsum board (4) and the secondary keel (3) in sequence and forms a pair of through holes (33) with the same inner diameter and coaxially arranged on the gypsum board (4) and the secondary keel (3). The inner diameter of the through holes (33) is larger than the outer diameter of the smooth rod part (52).

5. The light steel keel gypsum board ceiling structure according to claim 4, characterized in that, The outer wall of the smooth rod portion (52) has a plurality of through grooves (520), which are spaced apart and extend along the axial direction of the smooth rod portion (52).

6. The light steel keel gypsum board ceiling structure according to claim 1, characterized in that, Each of the pair of protrusions (31) has a rounded chamfer on one side opposite to facilitate the insertion and removal of the groove (70).

7. The light steel keel gypsum board ceiling structure according to claim 1, characterized in that, The connector (1) includes a hanger (11), a first hanger (12), and a second hanger (13). One end of the hanger (11) is connected to the floor slab by an expansion bolt, and the other end of the hanger (11) is connected to the first hanger (12). The main keel (2) is fitted into the first hanger (12). The main keel (2) and the secondary keel (3) are connected by the second hanger (13). The main keel (2) and the secondary keel (3) are perpendicular to each other.

8. The construction process of the light steel keel gypsum board (4) ceiling structure as described in claim 1, characterized in that, Includes the following steps: S1. Attach the storage bag (9) to the sub-keel (3), and then insert the auxiliary plate (7) between a pair of protrusions (31); S2. Fix one end of the hanger (11) to the floor slab with expansion bolts, and then install the main keel (2) and the secondary keel (3) in sequence with connector (1); S3. Place the plasterboard (4) close to the secondary keel (3) and drill self-tapping screws (5) so that the self-tapping screws (5) pass through the plasterboard (4), the secondary keel (3) and the auxiliary board (7) in sequence. S4. During the drilling process of the self-tapping screw (5), the storage bag (9) is punctured, and the sealant in the storage bag (9) flows out and flows into the gap (6) between the secondary keel (3) and the gypsum board (4) through the through hole (32). S5. Paint is applied to the gypsum board (4), and the ceiling is completed after it dries naturally.

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