An assembled quick-mounting keel and suspended ceiling

Abstract

The present application relates to a kind of assembled quick-mounting keel and suspended ceiling, including first transverse keel, second transverse keel and third transverse keel of assembly connection;Second transverse keel is installed below first transverse keel by vertical keel;Third transverse keel is installed below second transverse keel perpendicular to second transverse keel;The first flange end of vertical keel upper end is provided with circular slot;First flange end and first transverse keel are connected by first connecting bolt through circular slot.The present application is connected by the assembly of first transverse keel, vertical keel, second transverse keel and third transverse keel, so that the setting of second transverse keel and third transverse keel can change angle relative to first transverse keel, so as to solve the setting of second transverse keel and third transverse keel when the I-beam between top is no longer parallel is not influenced by I-beam extension direction, reduce the difficulty of installation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building decoration, and in particular to an assembled quick-mounting keel and suspended ceiling. BACKGROUND

[0002] The top of a building generally needs to be suspended and have equipment such as air pipes installed. In order to avoid the length of the structure suspender in the space exceeding the construction requirements, a steel frame transfer floor needs to be installed on the top of the building, and then construction is carried out below the steel frame transfer floor. In some large venues, hotel lobbies, conference halls and other buildings, the interior space is large, and the top of the concrete structure is usually provided with an I-beam, and the steel frame transfer floor is installed below the I-beam. The prior art, such as the utility model patent with the publication number CN217517823U, discloses a connecting device for an I-beam steel truss transfer floor, which clamps the connecting device on the flange plate at the lower end of the I-beam through an arc-shaped pressing plate, and then connects the transfer floor at the lower end of the support rod of the connecting device.

[0003] Conventional venues have a regular geometric shape, such as a rectangle, and the I-beams are usually parallel to each other. However, for some special-shaped architectural designs, such as an unfolded fan shape, the I-beams are arranged in the direction of the fan bones of the fan. If the transfer floor is arranged directly along the extension direction of the I-beam, the steel frame transfer floor will be unevenly dense, increasing the difficulty of installation of the steel frame transfer floor, and the stress of the horizontal frame of the transfer floor will be unbalanced and unstable. SUMMARY

[0004] In order to solve the above technical problems, the present application provides an assembled quick-mounting keel and suspended ceiling, which is designed to reduce the difficulty of installation and improve the installation efficiency by the structure of the keel.

[0005] The technical purpose of the present application is achieved by the following technical solutions:

[0006] An assembled quick-mounting keel, comprising a first horizontal keel, a second horizontal keel and a third horizontal keel; the first horizontal keel is installed at the lower end of the I-beam; a vertical keel is connected between the first horizontal keel and the second horizontal keel, both ends of the vertical keel are connected to the first horizontal keel and the second horizontal keel respectively, and the second horizontal keel is installed below the first horizontal keel through the vertical keel; the third horizontal keel is perpendicular to the second horizontal keel and is installed below the second horizontal keel; the first horizontal keel, the second horizontal keel, the third horizontal keel and the vertical keel are assembled and connected;

[0007] The upper end of the vertical keel is provided with a first flange end, the first flange end has a flange end plate and a connecting sleeve, the connecting sleeve is vertically fixed in the middle of the flange end plate, and the flange end plate forms connecting wing plates on both sides of the connecting sleeve; the upper end of the vertical keel is inserted into the connecting sleeve and is fixedly connected with the connecting sleeve, and the connecting wing plates on both sides of the connecting sleeve are respectively provided with circular arc notches, and the bending directions of the circular arc notches on the connecting wing plates on both sides are oppositely arranged.

[0008] The first connecting bolt is connected between the first transverse keel and the connecting wing plate, the first connecting bolt passes through the circular arc notch, and the connecting wing plates on both sides of the connecting sleeve are respectively connected with the first transverse keel through the first connecting bolt; the second connecting bolt is connected between the connecting sleeve and the vertical keel.

[0009] Further, the upper end of the first transverse keel is provided with an arched pressing plate, one end of the arched pressing plate is provided with a limiting clamping groove corresponding to the first transverse keel, the other end of the arched pressing plate forms a clamping end, the limiting clamping groove of the arched pressing plate is clamped outside the first transverse keel, and a third connecting bolt for adjusting the distance between the clamping end and the upper end surface of the first transverse keel is arranged near the middle part of the arched pressing plate, the third connecting bolt connects the arched pressing plate and the first transverse keel; two arched pressing plates are oppositely arranged on the first transverse keel, and the clamping ends of the arched pressing plates clamp the lower end wing plates of the I-beam from both sides.

[0010] Further, the side surface of the connecting sleeve is provided with an opening for the end part of the vertical keel to enter the connecting sleeve from the side surface of the connecting sleeve.

[0011] Further, the lower end of the vertical keel is provided with a second flange end, the second flange end includes two oppositely arranged connecting structures, the connecting structure includes a U-shaped side wall and a bottom wing plate connected with the U-shaped side wall perpendicularly, and the U-shaped side walls of the two connecting structures clamp the vertical keel from both sides.

[0012] The fourth connecting bolt is connected between the connecting structure and the vertical keel, and the fifth connecting bolt is connected between the connecting structure and the second transverse keel; the fourth connecting bolt simultaneously passes through the U-shaped side walls of the connecting structure on both sides of the vertical keel, and the fifth connecting bolt connects the bottom wing plate and the second transverse keel.

[0013] Further, the upper end of the second transverse keel is provided with an upper U-shaped clamping piece, and the lower end of the third transverse keel is provided with a lower U-shaped clamping piece; the upper U-shaped clamping piece clamps the second transverse keel from above, the lower U-shaped clamping piece clamps the third transverse keel from below, the sixth connecting bolt is connected between the upper U-shaped clamping piece and the lower U-shaped clamping piece, and the sixth connecting bolt sequentially passes through the upper U-shaped clamping piece, the second transverse keel, the third transverse keel and the lower U-shaped clamping piece from top to bottom.

[0014] Further, the first transverse keel has an upper end surface, a left side surface, a right side surface and a lower end surface; the middle part of the left side surface and the middle part of the right side surface are respectively provided with a concave shape along the length direction of the first transverse keel; the lower end surface of the first transverse keel forms symmetrical concave folded edges in the middle part, and the concave folded edges are bent upwards inside the first transverse keel; the first connecting bolt is connected with a U-shaped fastener, and the U-shaped fastener is located inside the first transverse keel and buckles the concave folded edges from above, and the first connecting bolt is connected with the first transverse keel through the U-shaped fastener.

[0015] Further, the structures of the first transverse keel, the second transverse keel and the third transverse keel are the same, and a plurality of waist-shaped holes are arranged on the upper end surface of the first transverse keel, the second transverse keel and the third transverse keel along the length direction of each.

[0016] Further, the vertical keel is a square tube keel, and two rows of circular holes are arranged on the two side surfaces of the vertical keel in a high-low staggered manner; two waist circular holes with the same height are arranged on the opposite side walls of the connecting sleeve corresponding to the two rows of circular holes of the vertical keel;

[0017] The U-shaped side walls of the connecting structure on the two sides of the vertical keel are provided with two waist circular holes with the same height corresponding to the two rows of circular holes of the vertical keel;

[0018] The second connecting bolt passes through the waist circular holes of the side walls of the connecting sleeve and the circular holes of the vertical keel to connect and fix the upper end of the vertical keel with the connecting sleeve; and the fourth connecting bolt passes through the waist circular holes of the U-shaped side walls and the circular holes of the vertical keel to connect and fix the lower end of the vertical keel with the second flange end.

[0019] Further, the second transverse keel is fixed at the lower end of the I-beam through the vertical keel and the first transverse keel at least at two ends of the second transverse keel.

[0020] The present application also provides a suspended ceiling comprising a keel and a suspended ceiling finish, wherein the suspended ceiling finish is installed below the keel, and the keel is the assembled quick-mounting keel as described above.

[0021] Compared with the prior art, the present application has the following beneficial effects:

[0022] 1. The assembled quick-mounting keel of the present application is connected through the assembled connection between the first transverse keel, the vertical keel, the second transverse keel and the third transverse keel, so that the arrangement of the second transverse keel and the third transverse keel can change the angle relative to the first transverse keel, thereby solving the problem that the arrangement of the second transverse keel and the third transverse keel is not affected by the extension direction of the I-beam when the I-beams at the top are no longer parallel, and reducing the difficulty of installation.

[0023] 2、The assembled keel in the application adopts an assembled connecting structure, so that assembly is more convenient and the installation efficiency is improved; the assembled connection basically avoids welding and cutting operation on site, so that the safety on site is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the planar schematic view of the assembled quick-mounting keel in the application.

[0025] Figure 2 is the three-dimensional structure schematic view of the assembled quick-mounting keel in the application.

[0026] Figure 3 is the first flange end structure schematic view in the application.

[0027] Figure 4 is the first flange end and first transverse keel connection schematic view in the application.

[0028] Figure 5 is the second flange end installation schematic view in the application.

[0029] Figure 6 is the first transverse keel internal structure schematic view in the application.

[0030] Figure 7 is the arched pressing plate and I-beam connection schematic view in the application.

[0031] Figure 8 is the arched pressing plate structure schematic view in the application.

[0032] Figure 9 is the second transverse keel and third transverse keel connection schematic view in the application.

[0033] Figure 10 is the first transverse keel and I-beam another connection mode schematic view in the application.

[0034] In the figure, 1, first transverse keel; 2, second transverse keel; 3, third transverse keel; 4, I-beam; 5, vertical keel; 6, first flange end; 7, second flange end; 8, first connecting bolt; 9, second connecting bolt; 10, third connecting bolt; 11, fourth connecting bolt; 12, fifth connecting bolt; 13, sixth connecting bolt; 14, U-shaped fastener; 15, arched pressing plate; 16, upper U-shaped clamping piece; 17, lower U-shaped clamping piece; 18, L-shaped clamping plate;

[0035] 1-1, upper end face; 1-2, left side face; 1-3, right side face; 1-4, lower end face; 1-5, inner concave folded edge;

[0036] 6-1, flange end plate; 6-2, connecting sleeve; 6-3, connecting wing plate; 6-4, circular-arc slot;

[0037] 7-1, U-shaped side wall; 7-2, bottom wing plate;

[0038] 15-1, limiting clamping groove; 15-2, clamping end;

[0039] 18-1, insertion end. DETAILED DESCRIPTION

[0040] The technical solutions of the application will be further described in combination with the specific embodiments:

[0041] An assembled quick-mount keel is provided for the case that the I-beam in the top area of a building is not parallel, and of course can also be used for the case that the I-beam is parallel, as shown in Figure 1 and Figure 2 The assembled quick-mount keel comprises a first transverse keel 1, a second transverse keel 2 and a third transverse keel 3; the first transverse keel 1 is installed at the lower end of the I-beam 4; a vertical keel 5 is connected between the second transverse keel and the first transverse keel, the two ends of the vertical keel 5 are respectively connected to the first transverse keel 1 and the second transverse keel 2, and the second transverse keel 2 is installed below the first transverse keel 1 through the vertical keel 5; the third transverse keel 3 is installed below the second transverse keel 2 perpendicularly to the second transverse keel 2; the first transverse keel 1, the second transverse keel 2, the third transverse keel 3 and the vertical keel 5 are assembled and connected; in this embodiment, the first transverse keel 1, the second transverse keel 2 and the third transverse keel 3 are horizontally arranged, and the vertical keel 5 is vertically arranged perpendicularly to the horizontal plane.

[0042] A first flange end 6 is arranged at the upper end of the first vertical keel, as shown in detail in Figure 3 The first flange end 6 has a flange end plate 6-1 and a connecting sleeve 6-2, the connecting sleeve 6-1 is fixed perpendicularly in the middle of the flange end plate 6-1, and the flange end plate 6-1 forms connecting wing plates 6-3 on both sides of the connecting sleeve 6-2; the upper end of the vertical keel 5 is inserted into the connecting sleeve 6-2 and connected and fixed with the connecting sleeve, and the connecting wing plates 6-3 on both sides of the connecting sleeve 6-2 are respectively provided with circular arc grooves 6-4, and the bending directions of the circular arc grooves 6-4 on the connecting wing plates 6-3 on both sides are oppositely arranged.

[0043] Specifically, as shown in Figure 4As shown, the first connecting bolt 8 is connected between the first transverse keel 1 and the connecting wing plate 6-3, and passes through the circular arc notch 6-4, and the first connecting bolt 6-4 connects the wing plate 6-3 on both sides of the connecting sleeve with the first transverse keel 1 respectively; the second connecting bolt 9 is connected between the connecting sleeve 6-2 and the vertical keel 5. When the I-beam is not parallel, the angle of the first flange end 6 is adjusted relative to the first transverse keel 1, so that the first connecting bolt 8 is offset in the circular arc notch 6-4, so that the second transverse keel 2 below is not affected by the extension direction of the I-beam 4 when connected through the vertical keel 5.

[0044] As preferred, the connecting sleeve 6-2 is provided with an opening on the side surface for the end of the vertical keel 5 to enter the connecting sleeve 6-2 from the side surface of the connecting sleeve 6-2.

[0045] The lower end of the vertical keel and the second transverse keel can also be connected through the first flange end, and can also be connected through an angle code. In the embodiment, a second flange end 7 is provided, as shown in Figure 5 As shown, the lower end of the vertical keel 5 is assembled and connected between the second flange end 7 and the second transverse keel 2.

[0046] Specifically, the second flange end includes two oppositely arranged connecting structures, and the connecting structure includes a U-shaped side wall 7-1 and a bottom wing plate 7-2 connected perpendicularly to the U-shaped side wall 7-1. The U-shaped side walls 7-1 of the two connecting structures clamp the vertical keel 5 from both sides;

[0047] The fourth connecting bolt 11 is connected between the connecting structure and the vertical keel 5, and the fifth connecting bolt 12 is connected between the connecting structure and the second transverse keel 2; the fourth connecting bolt 11 passes through the vertical keel 5 and the U-shaped side wall 7-1 of the connecting structure on both sides of the vertical keel, and the fifth connecting bolt 12 connects the bottom wing plate 7-2 and the second transverse keel 2.

[0048] The first transverse keel 1 is a hollow structure, as shown in Figure 6As shown, has upper end surface 1-1, left side 1-2, right side 1-3 and lower end surface 1-4; the middle part of left side 1-2 and the middle part of right side 1-3 are respectively provided with a concave shape along the length direction of the first transverse keel 1; the lower end surface 1-4 of the first transverse keel 1 forms a symmetrical concave fold 1-5 in the middle part, and the concave fold 1-5 is bent upwards inside the first transverse keel 1; the first connecting bolt 8 is connected with the U-shaped fastener 14, specifically the first connecting bolt 8 passes through the U-shaped fastener and is connected by a nut, the U-shaped fastener 14 is located in the first transverse keel 1 and clamps the concave fold 1-5 from above, and the first connecting bolt 8 is connected with the first transverse keel 1 through the U-shaped fastener 14. Two first connecting bolts 8 are arranged for each connecting wing plate of the first flange end 6, and the corresponding U-shaped fastener 14 can be one or two. When the U-shaped fastener 14 is one, the length is increased so that the two first connecting bolts 8 are connected on the same U-shaped fastener 14; when the U-shaped fastener 14 is two, each first connecting bolt 8 is connected with one U-shaped fastener 14.

[0049] In one embodiment, the first transverse keel 1, the second transverse keel 2 and the third transverse keel 3 are the same in structure, and can be different or the same in specification. A plurality of waist-shaped holes are arranged on the upper end surface of the first transverse keel 1, the second transverse keel 2 and the third transverse keel 3 along the length direction of each. Specifically, the third connecting bolt 10 passes through the waist-shaped hole on the first transverse keel, the fifth connecting bolt 12 passes through the waist-shaped hole on the second transverse keel, and the sixth connecting bolt 13 passes through the waist-shaped hole on the second transverse keel and the third transverse keel.

[0050] When the first transverse keel 1 is connected with the I-beam 4, as shown in Figure 7 and Figure 8 An arcuate pressing plate 15 is installed on the upper end of the first transverse keel 1, one end of the arcuate pressing plate 15 is provided with a limiting clamping groove 15-1 corresponding to the first transverse keel 1, the other end of the arcuate pressing plate 15 forms a clamping end 15-2, the limiting clamping groove 15-1 of the arcuate pressing plate 15 is clamped on the outer side of the first transverse keel 1, specifically the first transverse keel 1 is clamped from the upper end surface, the left side and the right side of the first transverse keel 1, a third connecting bolt 10 is arranged near the middle part of the arcuate pressing plate 15 to adjust the distance between the clamping end 15-2 and the upper end surface of the first transverse keel 1, and the third connecting bolt 10 connects the arcuate pressing plate 15 and the first transverse keel 1; two arcuate pressing plates 15 are arranged on the first transverse keel 1 in opposite directions, and the clamping end 15-2 of the arcuate pressing plate 15 clamps the lower end wing plate of the I-beam 4 from both sides.

[0051] The application also provides a connection mode of the first transverse keel 1 and the I-beam 4, as shown in Figure 10 The first transverse keel 1 is clamped on the lower end wing plate of the I-beam 4 from both sides by an L-shaped clamping plate 18, and the first transverse keel 1 is as shown in Figure 6As shown, the L-shaped clamping plate 18 is provided with an insertion end 18-1 at one end corresponding to the position of the inner recessed folded edge, the width of the insertion end 18-1 is smaller than the width of the L-shaped clamping plate 18 to form a convex structure, and the insertion end 18-1 is inserted between the inner recessed folded edges 1-5 on both sides of the first transverse keel during use to prevent the L-shaped clamping plate 18 from deviating in direction, and the L-shaped clamping plate 18 is connected with the first transverse keel 1 through bolts, and the other end of the L-shaped clamping plate 18 is clamped at the lower end flange of the I-beam 4.

[0052] As shown, the second transverse keel 2 is provided with an upper U-shaped clamping piece 16 at the upper end, and the third transverse keel 3 is provided with a lower U-shaped clamping piece 17 at the lower end; the upper U-shaped clamping piece 16 clamps the second transverse keel 2 from above, and the lower U-shaped clamping piece 17 clamps the third transverse keel 3 from below; the sixth connecting bolt 13 is connected between the upper U-shaped clamping piece 16 and the lower U-shaped clamping piece 17, and the sixth connecting bolt 13 sequentially passes through the upper U-shaped clamping piece 16, the second transverse keel 2, the third transverse keel 3 and the lower U-shaped clamping piece 17 from top to bottom. Figure 9 The vertical keel is a square tube keel, such as a square steel tube, and two rows of high-low staggered circular holes are arranged on the two side surfaces of the vertical keel 5; two waist round holes with the same height are arranged on the opposite side walls of the connecting sleeve 6 corresponding to the two rows of circular holes of the vertical keel;

[0053] The U-shaped side wall 7-1 of the connecting structure on both sides of the vertical keel 5 is provided with two waist round holes with the same height corresponding to the two rows of circular holes of the vertical keel 5;

[0054] The second connecting bolt 9 passes through the waist round holes of the side wall of the connecting sleeve 6-2 and the circular holes of the vertical keel 5 to connect and fix the upper end of the vertical keel 5 with the connecting sleeve 6-2; the fourth connecting bolt 11 passes through the waist round holes of the U-shaped side wall 7-1 and the circular holes of the vertical keel 5 to connect and fix the lower end of the vertical keel 5 with the second flange end 7. The arrangement of the high-low staggered circular holes on the side wall of the vertical keel 5 increases the stability of the vertical keel in the transverse direction, and the cooperation of the waist round holes facilitates the height adjustment.

[0055] The second transverse keel 2 is fixed to the lower end of the I-beam 4 through the vertical keel 5 and the first transverse keel 1 at least at two ends.

[0056] The embodiment also provides a suspended ceiling, which installs the suspended ceiling finish under the I-beam through the assembly type quick-mounting keel, and specifically installs the suspended ceiling finish under the second transverse keel and the third transverse keel through threaded rods, steel wires or the like.

[0057]

[0058] ​In this embodiment, the structural names involving first, second, third, fourth, fifth, sixth and upper and lower are only used for structural differentiation, and have no other limitations on the structure; in addition, the first connecting bolt to the sixth connecting bolt involved in this application are matched with a nut and a gasket structure.

[0059] This embodiment is only a further explanation of the present application, and is not a limitation of the present application. Those skilled in the art can make non-creative modifications to this embodiment according to needs after reading the specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A fabricated quick-fit keel, characterized by, The application relates to a steel structure, which comprises a first transverse keel, a second transverse keel and a third transverse keel; the first transverse keel is arranged at the lower end of an I-beam; a vertical keel is arranged between the second transverse keel and the first transverse keel, the two ends of the vertical keel are connected with the first transverse keel and the second transverse keel respectively, the second transverse keel is arranged below the first transverse keel through the vertical keel; the third transverse keel is arranged below the second transverse keel perpendicularly to the second transverse keel; the first transverse keel, the second transverse keel, the third transverse keel and the vertical keel are assembled and connected. The upper end of the vertical keel is provided with a first flange end, the first flange end is provided with a flange end plate and a connecting sleeve, the connecting sleeve is vertically fixed at the middle part of the flange end plate, and connecting wing plates are formed at the two sides of the connecting sleeve; the upper end of the vertical keel is inserted into the connecting sleeve and is fixedly connected with the connecting sleeve, arc grooves are arranged on the connecting wing plates at the two sides of the connecting sleeve respectively, and the bending directions of the arc grooves on the connecting wing plates at the two sides are oppositely arranged. First connecting bolts are arranged between the first transverse keel and the connecting wing plates, the first connecting bolts pass through the arc grooves, and the connecting wing plates at the two sides of the connecting sleeve are respectively connected with the first transverse keel through the first connecting bolts; second connecting bolts are arranged between the connecting sleeve and the vertical keel.

2. The assembled quick-mounting keel according to claim 1, characterized in that, An arc-shaped pressing plate is arranged at the upper end of the first transverse keel, one end of the arc-shaped pressing plate is provided with a limiting clamping groove corresponding to the first transverse keel, the other end of the arc-shaped pressing plate forms a clamping end, the limiting clamping groove of the arc-shaped pressing plate is clamped outside the first transverse keel, a third connecting bolt for adjusting the distance between the clamping end and the upper end surface of the first transverse keel is arranged near the middle part of the arc-shaped pressing plate, and the third connecting bolt connects the arc-shaped pressing plate and the first transverse keel; two arc-shaped pressing plates are oppositely arranged on the first transverse keel, and the clamping ends of the arc-shaped pressing plates clamp the lower end wing plates of the I-beam from the two sides.

3. The assembled quick-mount keel according to claim 1, wherein, An opening is arranged on the side surface of the connecting sleeve, and the end part of the vertical keel enters the connecting sleeve from the side surface of the connecting sleeve through the opening.

4. The fabricated quick-fit keel according to claim 1, characterized in that, A second flange end is arranged at the lower end of the vertical keel, the second flange end comprises two oppositely arranged connecting structures, the connecting structure comprises a U-shaped side wall and a bottom wing plate connected with the U-shaped side wall perpendicularly, and the U-shaped side walls of the two connecting structures clamp the vertical keel from the two sides; Fourth connecting bolts are arranged between the connecting structures and the vertical keel, and fifth connecting bolts are arranged between the connecting structures and the second transverse keel; the fourth connecting bolts pass through the vertical keel and the U-shaped side walls of the connecting structures at the two sides of the vertical keel simultaneously, and the fifth connecting bolts connect the bottom wing plates and the second transverse keel.

5. The assembled quick-mount keel according to claim 1, wherein, An upper U-shaped clamping piece is arranged at the upper end of the second transverse keel, and a lower U-shaped clamping piece is arranged at the lower end of the third transverse keel; the upper U-shaped clamping piece clamps the second transverse keel from above, the lower U-shaped clamping piece clamps the third transverse keel from below, sixth connecting bolts are arranged between the upper U-shaped clamping piece and the lower U-shaped clamping piece, and the sixth connecting bolts pass through the upper U-shaped clamping piece, the second transverse keel, the third transverse keel and the lower U-shaped clamping piece in sequence from top to bottom.

6. The fabricated quick-fit keel according to claim 1, characterized in that, The first transverse keel has an upper end surface, a left side surface, a right side surface and a lower end surface; the middle part of the left side surface and the middle part of the right side surface are respectively provided with a concave shape along the length direction of the first transverse keel; the lower end surface of the first transverse keel forms a symmetrical concave folded edge in the middle part, which is upwardly bent inside the first transverse keel; the first connecting bolt is connected with a U-shaped fastener, which is located inside the first transverse keel and fastens the concave folded edge from above, and the first connecting bolt is connected with the first transverse keel through the U-shaped fastener.

7. The assembled quick-mount keel according to claim 6, wherein, The first transverse keel, the second transverse keel and the third transverse keel have the same structure, and a plurality of waist-shaped holes are arranged on the upper end surface of the first transverse keel, the second transverse keel and the third transverse keel along the length direction of each.

8. The fabricated quick-fit keel according to claim 4, characterized in that, The vertical keel is a square tube keel, and two rows of high-low staggered distributed circular holes are arranged on the two side surfaces of the vertical keel; the two waist circular holes arranged in the same height are arranged on the opposite two side walls of the connecting sleeve corresponding to the two rows of circular holes of the vertical keel; The U-shaped side wall of the connecting structure on the two sides of the vertical keel is provided with two waist circular holes arranged in the same height corresponding to the two rows of circular holes of the vertical keel; The second connecting bolt passes through the waist circular holes of the side wall of the connecting sleeve and the circular holes of the vertical keel to connect and fix the upper end of the vertical keel with the connecting sleeve; and the fourth connecting bolt passes through the waist circular holes of the U-shaped side wall and the circular holes of the vertical keel to connect and fix the lower end of the vertical keel with the second flange end.

9. The fabricated quick-fit keel according to claim 1, characterized in that, The second transverse keel is fixed at the lower end of the I-beam through the vertical keel and the first transverse keel at least at two ends.

10. A ceiling, characterized in that The assembly type fast mounting keel comprises a keel and a suspended ceiling finish, wherein the suspended ceiling finish is installed below the keel, and the keel is the assembly type fast mounting keel according to any one of claims 1-9.

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