Steel bar truss floor support plate with pre-embedded hanging supporting pieces and method

Abstract

The invention discloses a steel bar truss floor support plate with embedded hanging supporting pieces and a method. The steel bar truss floor support plate comprises a truss and a bottom die. A through hole is formed in the position, corresponding to the needed hanging position, of the bottom die, a top fixing piece is welded to the top of the truss, a screw rod is vertically welded to the bottom face of the top fixing piece, and the bottom end of the screw rod penetrates through the through hole to extend to the position below the bottom die and is fixedly connected with a hanging rod hanging piece. The bottom ends of the screws of the hanging supporting pieces penetrate through the bottom die and extend to the position below the bottom die, the problem that after concrete is poured into the steel bar truss floor support plate, embedded parts at the bottom of a floor slab are not easy to find is solved, quick finding and quick installation of plate bottom hanging are achieved through simple bolt connection, and the situation that hanging objects are installed in a misplaced mode is avoided; and the damage to the floor support plate bottom die is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar truss floor decking, in particular to a steel bar truss floor decking with pre-embedded hanging supports and a method thereof. Background Art

[0002] Steel truss floor decking is widely used in the field of steel structure housing construction. There will be suspended ceilings, cable trays, pipes and other hanging items at the bottom of the board. When installing these hanging items in the later stage, it is necessary to set a reserved steel plate at the bottom of the floor decking before installing the steel truss floor decking as a support point for later hanging. When setting the hanging items later, it is necessary to find the position of the reserved steel plate and weld the hanging items to the reserved steel plate. Since the bottom mold of the floor decking is thin, when welding the hanging items, the bottom mold is melted through to achieve the welding of the hanging items and the reserved steel plate as a whole, completing the installation of the hanging items in the later stage.

[0003] The inventors discovered that, in the above-mentioned practice, since the embedded parts need to be placed above the bottom formwork of the steel truss floor deck, after the construction of the steel truss floor deck is completed, the reserved steel plates are not easy to find, which makes it easy for the hanging objects and the reserved steel plates to be misaligned when welding the hanging objects. Not only can the supporting strength of the hanging objects not be guaranteed, but the search for the reserved steel plates before welding also affects the workers' work efficiency. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a steel truss floor deck and method with pre-embedded hanging supports, wherein the bottom end of the screw of the hanging support is extended through the bottom form to below the bottom form, thereby avoiding the problem of difficult locating the pre-embedded parts at the bottom of the steel truss floor deck after pouring concrete, and through simple bolt connections, quick locating and quick installation of the bottom suspension of the slab is achieved.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In a first aspect, a steel truss floor deck with embedded hanging supports comprises a truss and a bottom form; the bottom form is provided with through holes at positions corresponding to required hanging positions, a top fixing piece is welded to the top of the truss, a screw is vertically welded to the bottom surface of the top fixing piece, the bottom end of the screw extends through the through hole to below the bottom form, and the bottom end of the screw is fixedly connected to the hanger.

[0007] As a further implementation, the top fixing piece is welded to the top of the upper chord steel bars of the truss, and the top fixing piece is welded between two adjacent upper chord steel bars.

[0008] As a further implementation, the top fixing member is a rectangular steel plate structure, a set of opposite sides of which overlap with the corresponding upper chord steel bars.

[0009] As a further implementation, the top end of the screw rod is welded to the center position of the bottom surface of the top fixing piece.

[0010] As a further implementation method, the bottom end of the screw is fixed to a U-shaped clamp by a nut. The U-shaped clamp includes a top plate and side plates on both sides of the top plate. Circular holes are provided on the two side plates, and the U-shaped clamp is fixedly connected to the suspension rod hanger through the circular holes and the fixing parts.

[0011] As a further implementation method, the top plate of the U-shaped clamp is fitted with the bottom surface of the bottom mold, and the screw passes through the top plate and cooperates with the nut to tighten the U-shaped clamp.

[0012] As a further implementation method, the circular holes of the two side plates cooperate with the tension screws, the top end of the hanger hanger extends between the two side plates, the tension screws pass through the hanger hanger and the circular holes and cooperate with the tension nuts.

[0013] As a further implementation method, the tension nut is located on the outer side surfaces of the two side plates, and a spring gasket is provided between the tension nut and the side plate.

[0014] As a further implementation, the contact portion between the screw and the bottom mold is welded.

[0015] In a second aspect, a method for manufacturing a steel truss floor deck with embedded hanging supports comprises the following steps: according to the hanging position, determining the drilling position of the floor deck bottom formwork and drilling to obtain a through hole; first passing the bottom end of the screw through the through hole, welding the top fixing to the screw, and then welding the top fixing to the upper chord steel bar; then pouring concrete on the bottom formwork so that the concrete submerges the top fixing, and then installing the hanger hanger to obtain a steel truss floor deck as described above.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention extends the bottom end of the screw rod of the hanging support through the bottom form to below the bottom form, thereby avoiding the difficulty of finding the embedded parts at the bottom of the steel truss floor slab after pouring concrete, and realizes the rapid search and installation of the bottom suspension of the slab through simple bolt connection, and does not cause the misalignment of the hanging objects, and reduces the damage to the bottom form of the floor slab.

[0018] 2. The present invention can realize the setting of the spring gasket, which can ensure that the hanger hanger and the U-shaped clamp are firmly installed. The spring gasket can ensure that the tension nut is tightened and will not be over-tightened.

[0019] 3. The screw rod of the present invention is welded to the top surface of the bottom mold, which can prevent the concrete slurry from seeping under the bottom mold.

[0020] 4. The U-shaped clamp of the present invention serves to connect the screw rod and the suspension rod hanger. The installation of the suspension rod hanger is achieved by pulling the screw rod. The U-shaped clamp is pressed tightly under the bottom mold by the cooperation of the nut and the screw rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0022] Figure 1 is a front view of a steel truss floor deck in an embodiment of the present invention;

[0023] Figure 2 It is a side view of a steel bar truss floor deck in an embodiment of the present invention.

[0024] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0025] Among them: 1. Top fixings, 2. Screws, 3. Nuts, 4. U-shaped clamps; 5. Tension nuts, 6. Spring washers, 7. Tension screws, 8. Hanger hangers, 9. Steel truss floor decking, 10. Bottom formwork, 91. Upper chord steel bars, 92. Lower chord steel bars, 93. Web bar steel bars. DETAILED DESCRIPTION

[0026] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0027] Embodiment 1

[0028] In a typical embodiment of the present invention, reference is made to Figure 1-Figure 2 As shown, a steel truss floor deck with pre-embedded hanging supports, the steel truss floor deck 9 of this embodiment includes a steel truss, a bottom form 10 and hanging supports, wherein the steel truss is fixed above the bottom form 10 and concrete is poured, which is the prior art.

[0029] like Figure 1 As shown, the bottom mold is a 0.5 cm thick steel plate, and the bottom mold 10 is provided with a through hole at the corresponding required hanging position. The top fixing piece is welded to the top of the truss, and the screw rod 2 is vertically welded to the bottom surface of the top fixing piece 1. The bottom end of the screw rod 2 extends through the through hole to the bottom of the bottom mold 10, and the bottom end of the screw rod 2 is fixedly connected to the suspension rod hanger 1.

[0030] By pre-embedded hanging supports, and the bottom end of the hanging supports extending out of the bottom formwork 10, the hanging objects can be quickly installed during subsequent construction, avoiding the problem of difficult locating the embedded steel plate at the bottom of the steel truss floor slab 9 after pouring concrete.

[0031] like Figure 1 and Figure 2 As shown, the top fixing member 1 is welded to the top of the upper chord steel bars 91 of the truss, and the top fixing member 1 is welded between two adjacent upper chord steel bars 91. The top fixing member 1 of this embodiment is a rectangular steel plate structure, and a set of opposite sides thereof are overlap-welded with the upper chord steel bars 91 of the corresponding adjacent steel bar trusses, so that the upper chord steel bars 91 play a supporting role for the top fixing member 1.

[0032] The top of the screw rod 2 is welded to the center of the bottom surface of the top fixing member 1. Figure 2 As shown, the screw rod 2 is located between two adjacent steel bar trusses, and the screw rod 2 can pass through the bottom mold 10 downward. The top fixing member 1 of this embodiment is a rectangular 6mm thick steel plate, and the length direction of the steel plate is perpendicular to the length direction of the upper chord steel bar 91.

[0033] The steel bar truss comprises an upper chord steel bar 91, a lower chord steel bar 92, and a web bar steel bar 93, which is a prior art. The bottom end of the web bar steel bar 93 is bent and welded to the bottom mold 10 for fixing.

[0034] like Figure 1 As shown, the bottom end of the screw rod 2 is provided with threads, and the top portion may not be provided with threads. The bottom end of the screw rod 2 should pass through the bottom mold 10 and extend below the bottom mold 10, so the bottom mold 10 needs to be drilled in advance so that the screw rod 2 passes through the through hole on the bottom mold 10.

[0035] It can be understood that the drilling position of the bottom mold 10 should be based on the position where the screw 2 is to be set. The position where the screw 2 is to be set is related to the position where the bottom of the floor decking is to be hung. Therefore, after determining the hanging position, the corresponding position of the bottom mold 10 can be drilled, and the inner diameter of the drilled through hole is adapted to the outer diameter of the screw 2.

[0036] First, the top fixing part 1 and the screw rod 2 can be welded together. Then, after drilling a through hole in the bottom mold, the bottom end of the screw rod 2 is passed through the through hole. At this time, the side of the top fixing part overlaps with the upper chord steel bar 91, and the top fixing part 1 is welded to the upper chord steel bar 91. Then, the screw rod 2 and the bottom mold 10 are welded together, so as to close the gap between the screw rod 2 and the bottom mold 10 and prevent the concrete slurry from seeping from here. When welding the screw rod 2 and the bottom mold 10, it is only necessary to weld from the upper surface of the bottom mold 10.

[0037] The hanging support also includes a hanging rod hanger 8, which is fixed to the bottom end of the screw rod 2 through a corresponding connecting piece. The bottom end of the screw rod 2 is fixed with a U-shaped clamp 4 through a nut 3. The U-shaped clamp 4 includes a top plate and side plates on both sides of the top plate. The side plates are provided with round holes, which are fixedly connected to the hanging rod hanger through the round holes and the fixing piece.

[0038] like Figure 2 As shown, the U-shaped clamp is a U-shaped plate structure, which is inverted so that its top plate fits with the ground of the bottom mold. A through hole is also provided on the top plate for the screw to pass through. After the screw 2 passes through the through hole on the top plate of the U-shaped clamp, the nut 3 is matched with the screw 2 to press the top plate of the U-shaped clamp against the bottom surface of the bottom mold.

[0039] The round holes on the two side plates of the U-shaped clamp 4 are used for the tension screw 7 to pass through. Figure 2 As shown, the top end of the boom hanger 8 extends to between the two side plates, and a circular hole is provided on the boom hanger for the tension screw 7 to pass through. The tension screw 7 passes through the circular holes provided on the boom hanger and the side plates and cooperates with the tension nut 5.

[0040] The two ends of the tension screw 7 extend to the outside of the two side plates of the U-shaped clamp and cooperate with the tension nut 5 to fix the suspension rod hanger 8. In order to ensure the stability of the suspension rod hanger 8, a spring washer 6 is provided between the tension nut 5 and the side plate, and the spring washer 6 can ensure that the tension nut 5 is tightened and will not be over-screwed.

[0041] The cross-section of the hanger hanger 8 of this embodiment can be rectangular, and its size is adapted to the size of the top plate of the U-shaped clamp. The hanger hanger 8 is a hollow structure with an open top. When installing the hanger hanger 8, its top end can abut the top plate of the clamp, covering the screw and nut 3 under the top plate. When tightening the tension nut 5, the hanger hanger 8 will not rotate.

[0042] In this embodiment, the bottom end of the screw rod 2 extends through the bottom form 10 to below the bottom form 10, thereby avoiding the difficulty of finding the embedded parts at the bottom of the steel truss floor slab after pouring concrete, and through simple bolt connections, quick finding and quick installation of the bottom suspension of the slab is achieved, reducing damage to the bottom form of the floor slab.

[0043] Embodiment 2

[0044] In a typical embodiment of the present invention, reference is made to Figure 1-Figure 2As shown, a method for manufacturing a steel truss floor deck with pre-embedded hanging supports comprises the following steps: according to the hanging position of the hanging object, the drilling position of the floor deck bottom formwork 10 is determined and a through hole is obtained by drilling; the bottom end of the screw rod 2 is first passed through the through hole, and the top fixing part is welded to the screw rod 2; the top fixing part 1 and the screw rod 2 can also be welded first, and then the screw 2 is passed through the through hole, at which time the top fixing part 1 is overlapped between adjacent upper chord steel bars 91, and then the top fixing part 1 is welded to the upper chord steel bars 91; the screw rod 2 is welded to the bottom formwork 10, and then concrete is poured on the bottom formwork 10 so that the concrete submerges the top fixing part 1, completing the pre-embedding of the hanging supports, and then installing the hanger hanger 8 to obtain the steel truss floor deck as described in Example 1.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel truss floor deck with pre-embedded hanging supports, characterized in that: The steel bar truss floor decking plate includes a truss and a bottom formwork; the bottom formwork is provided with through holes at corresponding required hanging positions, a top fixing piece is welded on the top of the truss, a screw is vertically welded on the bottom surface of the top fixing piece, the bottom end of the screw passes through the through hole and extends to the bottom of the bottom formwork, and the bottom end of the screw is fixedly connected to the suspension rod hanger.

2. The steel truss floor deck with pre-embedded hanging supports according to claim 1, characterized in that: The top fixing piece is welded to the top of the upper chord steel bars of the truss, and the top fixing piece is welded between two adjacent upper chord steel bars.

3. The steel truss floor deck with pre-embedded hanging supports according to claim 2, characterized in that: The top fixing member is a rectangular steel plate structure, a set of opposite sides of which are overlapped with the corresponding upper chord steel bars.

4. The steel truss floor deck with pre-embedded hanging supports according to claim 2, characterized in that: The top end of the screw rod is welded to the center position of the bottom surface of the top fixing piece.

5. The steel truss floor deck with pre-embedded hanging supports according to claim 1, characterized in that: The bottom end of the screw rod is fixed with a U-shaped clamp through a nut. The U-shaped clamp includes a top plate and side plates on both sides of the top plate. Round holes are arranged on the two side plates, and the U-shaped clamp is fixedly connected with the suspension rod hanger through the round holes and the fixing parts.

6. The steel truss floor deck with pre-embedded hanging supports according to claim 5, characterized in that: The top plate of the U-shaped clamp is fitted with the bottom surface of the bottom mold, and the screw rod passes through the top plate and cooperates with the nut to tighten the U-shaped clamp.

7. The steel truss floor deck with pre-embedded hanging supports according to claim 6, characterized in that: The circular holes of the two side plates cooperate with the tension screws, the top end of the suspension rod hanger extends between the two side plates, the tension screws pass through the suspension rod hanger and the circular holes and cooperate with the tension nuts.

8. The steel bar truss floor deck with pre-embedded hanging supports according to claim 7, characterized in that: The tension nuts are located at the outer sides of the two side plates, and a spring washer is provided between the tension nuts and the side plates.

9. The steel truss floor deck with pre-embedded hanging supports according to claim 1, characterized in that: The screw rod is welded to the contact portion of the bottom mold.

10. A method for manufacturing a steel truss floor deck with pre-embedded hanging supports, characterized in that: The method comprises the following steps: determining the drilling position of the floor deck bottom formwork according to the hanging position and drilling to obtain a through hole; firstly passing the bottom end of the screw through the through hole, welding the top fixing part to the screw, and then welding the top fixing part to the upper chord steel bar; then pouring concrete on the bottom formwork so that the concrete submerges the top fixing part, and then installing the hanger hanger to obtain the steel bar truss floor deck as described in any one of claims 1 to 9.

Images