Steel bar truss thin-wall plate with adjustable lower chord bar outlet length

Abstract

The utility model discloses a steel bar truss thin-wall plate with adjustable lower chord bar outlet length, and relates to the technical field of building materials. The device further comprises an adjusting assembly. The adjusting assembly comprises a connecting cylinder, a rotating ring, a threaded rod, a rotating bearing, a supporting frame and an annular buckle. The lower chord steel bars are inserted from the two ends of the connecting cylinder, and the end faces of the lower chord steel bars and the side wall of the bottom die are located on the same plane. The rotating ring is rotationally connected to the connecting cylinder through a rotating bearing, a threaded hole is formed in the circle center of the rotating ring, and the threaded rod is spirally connected to the rotating ring; the supporting frame is fixed to the web bars and located on the lower side of the lower chord steel bar, and the lower chord steel bar is fixed to an annular buckle on the supporting frame. The annular buckle is fixed to the supporting frame, and an opening is formed in the top of the annular buckle. The reinforcing steel bars can extend out of the outer side of the prefabricated slab on a construction site, so that the reinforcing steel bars cannot be bent due to collision in the transportation process, and normal use during construction is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of building materials, in particular to a reinforced truss thin-walled plate with adjustable length of the lower chord reinforcing bars extending outwards. Background Art

[0002] The thin-walled plate is an assembled monolithic floor slab formed by laminating a precast slab and a cast-in-place reinforced concrete layer. The thin-walled plate has good integrity, high stiffness, can save formwork, and the upper and lower surfaces of the plate are flat, which is convenient for the decoration of the finishing layer, and is suitable for high-rise buildings and large-span buildings with high requirements for overall stiffness. The existing thin-walled plate needs to weld a steel bar grid on the precast slab and then pour a concrete layer on the construction site.

[0003] The steel bars welded on the precast slab need to extend outwards from the precast slab by a certain distance. During construction, this section of steel bars needs to extend into the steel bar framework that forms the wall. When the thin-walled plates are transported, they need to be stacked together, and the steel bars extending outside the precast slab will be bent due to collision during transportation, resulting in the inability to cooperate with the steel bar mesh that forms the wall during construction and affecting normal construction. Summary of the Utility Model

[0004] By providing a reinforced truss thin-walled plate with adjustable length of the lower chord reinforcing bars extending outwards in the embodiments of the present application, the problem in the prior art that the lower chord reinforcing bars welded on the precast slab need to extend outwards from the precast slab by a certain distance, and when the precast slabs are transported, they need to be stacked together, and the steel bars extending outside the precast slab will be bent due to collision during transportation, resulting in the inability to cooperate with the steel bar mesh that forms the wall during construction, is solved. It is realized that the steel bars are extended outwards from the precast slab on the construction site, so that the steel bars will not be bent due to collision during transportation, ensuring normal use during construction.

[0005] The embodiments of the present application provide a reinforced truss thin-walled plate with adjustable length of the lower chord reinforcing bars extending outwards, including a support assembly. The support assembly includes upper chord reinforcing bars, lower chord reinforcing bars, web bars, a bottom formwork and a steel bar mesh. The steel bar mesh is located inside the bottom formwork, the web bars are cast on the bottom formwork, and the upper chord reinforcing bars are welded on the top of the web bars;

[0006] It further includes an adjusting assembly;

[0007] The adjusting assembly includes a connecting cylinder, a rotating ring, a threaded rod, a rotating bearing, a support frame and an annular buckle;

[0008] The connecting cylinder is a cylindrical cylinder, and the lower chord reinforcing bars are inserted into both ends of the connecting cylinder. The end faces of the lower chord reinforcing bars and the side wall of the bottom formwork are in the same plane;

[0009] The rotating ring is rotatably connected to the connecting cylinder through a rotating bearing. A threaded hole is opened at the center of the rotating ring, and the threaded rod is screwed on the rotating ring;

[0010] The support frame is detachably fixed on the web reinforcement. The support frame is located on the lower side of the lower chord reinforcement, and the lower chord reinforcement is fixed on the annular buckle of the support frame;

[0011] An opening is provided at the top of the annular buckle.

[0012] Furthermore, annular grooves are formed on the two side walls of the rotating ring, and the end of the connecting cylinder is clamped in the annular groove;

[0013] An annular groove for fixing the rotating bearing is formed on the rotating ring;

[0014] The rotating bearings are respectively located on the two side walls of the rotating ring.

[0015] Furthermore, push seats are fixedly connected to both ends of the threaded rod, and the push seats are slidably connected in the connecting cylinder;

[0016] A circular groove is formed on the push seat, and the push seat can contact the end of the lower chord reinforcement.

[0017] Furthermore, elastic rings are fixed at both end positions in the connecting cylinder, and the elastic rings are elastic rubber rings;

[0018] The diameter of the round hole on the elastic ring is smaller than the diameter of the lower chord reinforcement;

[0019] The lower chord reinforcement passes through the elastic ring, and the elastic ring fits against the side wall of the lower chord reinforcement.

[0020] Furthermore, the threaded rod is coaxial with the connecting cylinder, and the length of the threaded rod is smaller than the length of the connecting cylinder;

[0021] The connecting cylinder is an aluminum alloy cylinder, and the connecting cylinder is located at the middle position of the bottom formwork.

[0022] Furthermore, a collar is fixedly connected to the side wall of the rotating ring;

[0023] The collar is a metal ring, and grooves for increasing friction are formed on the surface of the collar.

[0024] Furthermore, the support frames are respectively located at both end positions of the lower chord reinforcement;

[0025] The annular buckle is a plastic buckle, and the lower chord reinforcement is detachably fixed on the annular buckle;

[0026] The diameter of the round hole on the annular buckle is the same as the diameter of the lower chord reinforcement.

[0027] Furthermore, the lower chord reinforcement is located between the bottom formwork and the upper chord reinforcement;

[0028] The distance from the lower chord reinforcement to the bottom formwork is greater than the radius of the connecting cylinder;

[0029] The length of the connecting cylinder can vary according to the length of the lower chord steel bars.

[0030] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0031] The lower chord steel bars are temporarily fixed on the web bars through the support frame. By rotating the rotating ring, the threaded rod moves in the connecting cylinder and pushes the lower chord steel bars to move, so that the lower chord steel bars move towards both ends. After the adjustment is completed, the lower chord steel bars are welded and fixed. This effectively solves the problem that in the prior art, the lower chord steel bars welded on the precast slab need to extend a certain distance outward from the precast slab. When the precast slabs are transported, they need to be stacked together, and the steel bars extending to the outside of the precast slab will be bent due to collision during transportation, resulting in the inability to cooperate with the steel bar mesh forming the wall during construction. Furthermore, it realizes extending the steel bars outward from the precast slab at the construction site, avoiding the bending of the steel bars due to collision during transportation. Brief Description of the Drawings

[0032] Figure 1 It is a schematic diagram of the overall structure of a steel bar truss thin-walled slab with adjustable lower chord bar extension length according to the present utility model;

[0033] Figure 2 It is a schematic diagram of the structure of the support assembly of a steel bar truss thin-walled slab with adjustable lower chord bar extension length according to the present utility model;

[0034] Figure 3 It is a schematic diagram of the connection relationship between the adjustment assembly and the lower chord steel bars of a steel bar truss thin-walled slab with adjustable lower chord bar extension length according to the present utility model;

[0035] Figure 4 It is a schematic diagram of the connection relationship between the connecting cylinder and the lower chord steel bars of a steel bar truss thin-walled slab with adjustable lower chord bar extension length according to the present utility model;

[0036] Figure 5 It is a schematic diagram of the specific structure of the adjustment assembly of a steel bar truss thin-walled slab with adjustable lower chord bar extension length according to the present utility model;

[0037] Figure 6 It is for a steel bar truss thin-walled slab with adjustable lower chord bar extension length according to the present utility model Figure 5 cross-sectional structure schematic diagram;

[0038] Figure 7 It is a schematic diagram of the connection relationship between the support frame and the lower chord steel bars of a steel bar truss thin-walled slab with adjustable lower chord bar extension length according to the present utility model.

[0039] In the figure: 100, support assembly; 101, upper chord steel bars; 102, lower chord steel bars; 103, web bars;

[0040] 200, Adjusting component; 201, Connecting cylinder; 202, Rotating ring; 203, Threaded rod; 204, Pushing seat; 205, Elastic ring; 206, Collar; 207, Rotating bearing; 208, Support frame; 209, Annular buckle. Detailed implementation mode

[0041] The preferred implementation mode of the present utility model. However, the present utility model can be implemented in many different forms and is not limited to the implementation modes described herein; on the contrary, the purpose of providing these implementation modes is to make the disclosure of the present utility model more thoroughly and comprehensively understood.

[0042] It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation mode.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs; the terms used in the description of the present utility model in this specification are only for the purpose of describing specific implementation modes and are not intended to limit the present utility model; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0044] Such as Figures 1 to 7As shown in the figure, the present application proposes a thin-walled steel truss slab with adjustable lower chord tendon length, which includes a support assembly 100. The support assembly 100 includes an upper chord steel bar 101, a lower chord steel bar 102, web bars 103, a bottom form 104 and a steel mesh 105. The steel mesh 105 is located inside the bottom form 104, the web bars 103 are cast on the bottom form 104, and the upper chord steel bar 101 is welded to the top of the web bars 103; it also includes an adjustment assembly 200; the adjustment assembly 200 includes a connecting cylinder 201, a rotating ring 202, a threaded rod 203, a rotating bearing 207, a support frame 208 and an annular buckle 209; the connecting cylinder 201 is a cylindrical cylinder with openings at both ends, and the lower chord steel bar 102 is inserted from both ends of the connecting cylinder 201, and the end face of the lower chord steel bar 102 and the side wall of the bottom form 104 are in the same plane; the rotating ring 202 is rotatably connected to the connecting cylinder 201 through the rotating bearing 207, a threaded hole is opened at the center of the rotating ring 202, the threaded rod 203 is screwed on the rotating ring 202, and by rotating the rotating ring 202, the threaded rod 203 moves in the connecting cylinder 201, and both ends of the threaded rod 203 can contact the lower chord steel bar 102 and push the lower chord steel bar 102 to move in the connecting cylinder 201; the support frame 208 is detachably fixed on the web bars 103, the support frame 208 is located below the lower chord steel bar 102, and the support frame 208 is used to temporarily fix the lower chord steel bar 102, and the lower chord steel bar 102 is fixed on the annular buckle 209 on the support frame 208; an opening is provided at the top of the annular buckle 209, and the lower chord steel bar 102 can be clamped on the annular buckle 209 through the opening on the annular buckle 209, and the lower chord steel bar 102 can move on the annular buckle 209. After the lower chord steel bar 102 is welded and fixed, the support frame 208 can be removed and the annular buckle 209 can be separated from the lower chord steel bar 102.

[0045] Preferably, annular grooves are provided on both side walls of the rotating ring 202, and the end of the connecting cylinder 201 is clamped in the annular groove; an annular groove for fixing the rotating bearing 207 is provided on the rotating ring 202; the rotating bearings 207 are respectively located on both side walls of the rotating ring 202, and the rotating ring 202 rotates on the connecting cylinder 201 through the rotating bearing 207.

[0046] Preferably, push seats 204 are fixedly connected to both ends of the threaded rod 203, and the push seats 204 are slidably connected in the connecting cylinder 201; circular grooves are provided on the push seats 204. When adjusting the lower chord steel bar 102, the threaded rod 203 will drive the push seats 204 to contact the lower chord steel bar 102, and the lower chord steel bar 102 can be clamped in the grooves on the push seats 204.

[0047] Preferably, elastic rings 205 are fixed at both ends inside the connecting cylinder 201. The elastic rings 205 are attached to the inner wall of the connecting cylinder 201. The elastic rings 205 are elastic rubber rings; the diameter of the round holes on the elastic rings 205 is smaller than the diameter of the lower chord steel bar 102; the lower chord steel bar 102 is a threaded steel bar, and the lower chord steel bar 102 passes through the elastic ring 205. The elastic ring 205 is in contact with the side wall of the lower chord steel bar 102. The threads on the surface of the lower chord steel bar 102 can increase the friction between the lower chord steel bar 102 and the connecting cylinder 201, preventing the lower chord steel bar 102 from falling out of the connecting cylinder 201 during transportation.

[0048] Preferably, the threaded rod 203 is coaxial with the connecting cylinder 201, and the length of the threaded rod 203 is smaller than the length of the connecting cylinder 201. When adjusting the lower chord steel bar 102, the end of the lower chord steel bar 102 can always be located inside the connecting rod; the connecting cylinder 201 is an aluminum alloy cylinder. When the lower chord steel bar 102 is adjusted to the appropriate position, a clamping pliers is used to squeeze the connecting cylinder 201 so that the connecting cylinder 201 is in contact with the side wall of the lower chord steel bar 102, and then the connecting cylinder 201 is fixed on the lower chord steel bar 102, ensuring that the load-bearing capacity of the thin-walled plate is not affected after pouring the concrete.

[0049] Preferably, the connecting cylinder 201 is located at the middle position of the bottom mold 104, and the lower chord steel bars 102 on both sides can be respectively pushed outwards, so that the lower chord steel bars 102 extend from the bottom mold 104 to both sides. In some use places, only the lower chord steel bar 102 on one side needs to extend. By rotating the rotating ring 202 in a single direction, the pushing seat 204 pushes out the lower chord steel bar 102 on one side, realizing the adjustment of the lower chord steel bar 102 on one side.

[0050] Preferably, when rotating the rotating ring 202, a wrench can be used to turn the rotating ring 202. A collar 206 is fixedly connected to the side wall of the rotating ring 202; the collar 206 is a metal ring, and grooves for increasing friction are provided on the surface of the collar 206, which can prevent slipping when rotating the rotating ring 202.

[0051] Preferably, the support frames 208 are respectively located at both ends of the lower chord steel bar 102. The support frames 208 are fixed to the web bars 103 by buckles. After the lower chord steel bars 102 are welded, the support frames 208 and the annular buckles 209 can be removed. The support frames 208 and the annular buckles 209 can be reused; the annular buckles 209 are plastic buckles, and the lower chord steel bars 102 are detachably fixed to the annular buckles 209; the diameter of the round holes on the annular buckles 209 is the same as the diameter of the lower chord steel bars 102, and the lower chord steel bars 102 can slide on the annular buckles 209, facilitating the adjustment of the lower chord steel bars 102.

[0052] Preferably, the lower chord steel bar 102 is located between the bottom formwork 104 and the upper chord steel bar 101; the distance from the lower chord steel bar 102 to the bottom formwork 104 is greater than the radius of the connecting cylinder 201, so that there is a gap between the lower chord steel bar 102 and the bottom formwork 104. When pouring concrete, the concrete slurry can fill the gap; the length of the connecting cylinder 201 can vary according to the length of the lower chord steel bar 102. When the length of the lower chord steel bar 102 is relatively large, a longer connecting cylinder 201 can be selected, and when the lower chord steel bar 102 is relatively short, a shorter connecting cylinder 201 can be selected. Furthermore, when the lower chord steel bar 102 is adjusted to the longest extended position, the lower chord steel bar 102 located inside the connecting cylinder 201 can still be connected to each other through the connecting cylinder 201, so that the two lower chord steel bars 102 form a whole, thereby ensuring that the load-bearing capacity of the thin-walled plate is not affected.

[0053] When the steel bar truss thin-walled plate with adjustable lower chord steel bar extending length according to the embodiment of the present application is actually used:

[0054] After the bottom formwork 104 is poured, the upper chord steel bar 101 and the web steel bar 103 are welded and fixed together, then the support frame 208 is fixed on the web steel bar 103, and then the lower chord steel bar 102 that has been previously connected to the connecting cylinder 201 is fixed on the annular buckle 209 on the support frame 208. The support frame 208 temporarily fixes the lower chord steel bar 102 on the web steel bar 103, and then the bottom formwork 104 is transported to the construction site. By rotating the rotating ring 202 clockwise and counterclockwise respectively, the threaded rod 203 moves towards both ends of the connecting cylinder 201 inside the connecting cylinder 201. The pushing seat 204 at the end of the threaded rod 203 pushes the lower chord steel bar 102 towards the outside of the connecting cylinder 201, so that the lower chord steel bar 102 extends outwards from the side wall of the bottom formwork 104. When the lower chord steel bar 102 is adjusted to the appropriate position, use pliers to fix the connecting cylinder 201 on the lower chord steel bar 102, and then weld the lower chord steel bar 102 and the web steel bar 103.

[0055] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, 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 reinforced truss thin-walled plate with adjustable lower chord bar length extending out, comprising a support assembly (100), the support assembly (100) including an upper chord bar (101), a lower chord bar (102), web bars (103), a bottom formwork (104) and a steel mesh sheet (105), the steel mesh sheet (105) being located inside the bottom formwork (104), the web bars (103) being cast on the bottom formwork (104), and the upper chord bar (101) being welded to the top of the web bars (103); It is characterized in that It further includes an adjustment assembly (200); The adjustment assembly (200) includes a connecting cylinder (201), a rotating ring (202), a threaded rod (203), a rotating bearing (207), a support frame (208) and an annular buckle (209); The connecting cylinder (201) is a cylindrical cylinder, and the lower chord bar (102) is inserted into both ends of the connecting cylinder (201), and the end face of the lower chord bar (102) and the side wall of the bottom formwork (104) are in the same plane; The rotating ring (202) is rotatably connected to the connecting cylinder (201) through a rotating bearing (207), a threaded hole is opened at the center of the rotating ring (202), and the threaded rod (203) is screwed to the rotating ring (202); The support frame (208) is detachably fixed to the web bars (103), the support frame (208) is located below the lower chord bar (102), and the lower chord bar (102) is fixed to the annular buckle (209) on the support frame (208); The top of the annular buckle (209) is provided with an opening.

2. The thin-walled slab with a steel bar truss having an adjustable lower chord rib length as claimed in claim 1, wherein, Annular grooves are opened on both side walls of the rotating ring (202), and the end of the connecting cylinder (201) is clamped in the annular groove; An annular groove for fixing the rotating bearing (207) is opened on the rotating ring (202); The rotating bearings (207) are respectively located on both side walls of the rotating ring (202).

3. The thin-walled slab with a steel bar truss having an adjustable lower chord bar protruding length according to claim 1, characterized in that, Both ends of the threaded rod (203) are fixedly connected with a pushing seat (204), and the pushing seat (204) is slidably connected inside the connecting cylinder (201); A circular groove is opened on the pushing seat (204), and the pushing seat (204) can contact the end of the lower chord bar (102).

4. The thin-walled slab with a steel bar truss having an adjustable lower chord bar protruding length according to claim 3, characterized in that, Elastic rings (205) are fixed at both end positions inside the connecting cylinder (201), and the elastic rings (205) are elastic rubber rings; The diameter of the round hole on the elastic ring (205) is smaller than the diameter of the lower chord bar (102); The lower chord bar (102) passes through the elastic ring (205), and the elastic ring (205) is in contact with the side wall of the lower chord bar (102).

5. The thin-walled slab with a steel bar truss having an adjustable lower chord rib length as claimed in claim 1, wherein, The threaded rod (203) is coaxial with the connecting cylinder (201), and the length of the threaded rod (203) is smaller than the length of the connecting cylinder (201); The connecting cylinder (201) is an aluminum alloy cylinder, and the connecting cylinder (201) is located at the middle position of the bottom formwork (104).

6. The thin-walled slab with a steel bar truss having an adjustable lower chord rib length as claimed in claim 2, wherein A collar (206) is fixedly connected to the side wall of the rotating ring (202); The collar (206) is a metal ring, and grooves for increasing friction are opened on the surface of the collar (206).

7. The prestressed steel truss thin-walled slab with adjustable lower chord bar protruding length according to claim 1, wherein, The support frames (208) are respectively located at both ends of the lower chord steel bars (102); The annular fasteners (209) are plastic fasteners, and the lower chord steel bars (102) are detachably fixed on the annular fasteners (209); The diameter of the circular holes on the annular fasteners (209) is the same as the diameter of the lower chord steel bars (102).

8. The thin-walled slab with steel bar truss having adjustable lower chord bar extension length as claimed in claim 1, wherein, The lower chord steel bars (102) are located between the bottom formwork (104) and the upper chord steel bars (101); The distance from the lower chord steel bars (102) to the bottom formwork (104) is greater than the radius of the connecting cylinder (201); The length of the connecting cylinder (201) can vary according to the length of the lower chord steel bars (102).

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