Steel bar truss floor support plate

Abstract

The utility model provides a kind of steel bar truss floor support plate, comprising: mounting plate, steel bar truss and connecting assembly;Steel bar truss is fixed in mounting plate top;Connecting assembly includes: connecting sleeve, fixed sleeve and mounting sleeve, fixed sleeve and mounting sleeve are respectively fixed in the front and rear ends of mounting plate, connecting sleeve is connected with fixed sleeve by fixed screw, mounting sleeve is provided with mounting hole, one end of lower chord steel bar is inserted in mounting hole, the other end of lower chord steel bar is provided with limit ring, limit ring outer wall is equipped with arc groove, fixed sleeve and connecting sleeve are respectively equipped with semicircular groove, after fixed sleeve and connecting sleeve fixed connection, fixed sleeve and connecting sleeve embrace in arc groove outer wall, to fix lower chord steel bar.The utility model can conveniently maintain replacement for steel bar truss, prevent steel bar truss from happening deformation and affect the quality of device whole;Convenient for staff to splice device, improve the connectivity and tightness of plate directly.

Description

Technical Field

[0001] This utility model relates to the field of floor decking technology for building engineering, and in particular to a steel truss floor decking. Background Technology

[0002] Steel truss floor decking, as a highly efficient composite structural system, mainly consists of steel trusses and a base slab. Its industrialized production involves processing the reinforcing bars that bear the main load-bearing function of the floor slab into steel trusses in a factory, and then welding these trusses to galvanized steel sheets to form a composite structure that integrates load-bearing capacity and a construction platform. Due to its excellent mechanical properties, ease of construction, and advantages in industrialized production, this type of floor decking is widely used in multi-story and high-rise steel structure buildings, prefabricated buildings, and other fields.

[0003] However, existing reinforced steel truss floor decking has significant shortcomings in terms of maintenance capabilities. During transportation and installation, improper handling may cause deformation and bending of the steel truss, potentially resulting in substandard quality. Furthermore, because the steel truss is welded to the galvanized steel sheet, it is difficult to replace damaged sections of the steel truss when it deforms or bends, forcing the entire decking to be discarded. This results in substantial material waste. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a steel truss floor deck that facilitates the maintenance and replacement of steel trusses by staff and prevents deformation of the steel trusses from affecting the overall quality of the device.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a steel truss floor deck, comprising: an installation plate, a steel truss, and connecting components;

[0007] The steel truss is fixed to the top of the mounting plate by connecting components;

[0008] The steel truss includes: top chord steel bars, bottom chord steel bars and web steel bars, wherein the web steel bars are fixed between the top chord steel bars and the bottom chord steel bars by welding.

[0009] The connecting assembly includes a connecting sleeve, a fixing sleeve, and an mounting sleeve. The fixing sleeve and the mounting sleeve are respectively fixed to the front and rear ends of the mounting plate. The connecting sleeve is connected to the fixing sleeve by fixing screws. The mounting sleeve has a mounting hole. One end of the lower chord reinforcing bar is inserted into the mounting hole. The other end of the lower chord reinforcing bar is provided with a limit ring. The outer wall of the limit ring is provided with an arc-shaped groove. The fixing sleeve and the connecting sleeve are respectively provided with semi-circular grooves that match the arc-shaped grooves. After the fixing sleeve and the connecting sleeve are fixedly connected, the fixing sleeve and the connecting sleeve hug the outer wall of the arc-shaped groove to fix the lower chord reinforcing bar.

[0010] Furthermore, the mounting plate includes a base plate and a square tube welded and fixed below the base plate. Along the outer contour of the base plate, the square tube is connected end to end to form a closed frame. The fixing sleeve and the mounting sleeve are disposed on the upper side of the base plate.

[0011] Furthermore, the mounting hole is a tapered hole, and one end of the lower chord steel bar is provided with a tapered section that matches the tapered hole, and the tapered section is inserted into the tapered hole.

[0012] Furthermore, the mounting plate is provided with a first joint and a second joint on its left and right sides, respectively. The second joint has a snap-fit ​​block with a T-shaped cross-section. The snap-fit ​​block extends in the front-rear direction of the mounting plate. The first joint has a snap-fit ​​groove that matches the snap-fit ​​block. When two adjacent steel truss floor decks are spliced, the snap-fit ​​block on one steel truss floor deck is inserted into the snap-fit ​​groove on the other steel truss floor deck and fixed by positioning bolts.

[0013] Furthermore, the upper surfaces of both the first and second joints are downwardly inclined slopes.

[0014] Furthermore, a positioning block is provided at the top of the fixed sleeve, and a positioning groove is provided at the bottom of the connecting sleeve. When the connecting sleeve is connected to the fixed sleeve, the positioning block is inserted into the positioning groove.

[0015] Furthermore, a rectangular groove is provided at the end of the fixing bolt, and a friction plate is provided in the rectangular groove, with the friction plate protruding from the rectangular groove.

[0016] The advantages of this utility model are:

[0017] 1. This utility model, with its separable steel truss and mounting plate structure, facilitates maintenance and replacement of the steel truss by workers, preventing deformation of the steel truss from affecting the overall quality of the device. Furthermore, one end of the steel truss is inserted into the mounting sleeve, while the other end is locked in place by a fixing sleeve and a connecting sleeve. When disassembling the steel truss, only the bolts at one end need to be removed, further simplifying maintenance and replacement for workers.

[0018] 2. When splicing several steel truss floor slabs, adjacent steel truss floor slabs can be spliced ​​by using snap-fit ​​blocks and snap-fit ​​grooves, which can facilitate the splicing work of workers and improve the connection and tightness of the steel truss floor slabs. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a structural schematic diagram of a specific embodiment of the steel truss floor decking of this utility model.

[0021] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle.

[0022] Figure 3 This is a schematic diagram of the steel truss structure in this utility model.

[0023] Figure 4 This is a schematic diagram of the connection structure between the lower chord steel bar and the mounting sleeve in this utility model.

[0024] Figure 5 This is a schematic diagram of the connection structure between the connecting sleeve and the fixing sleeve in this utility model.

[0025] Figure 6 This is a schematic diagram of the mounting plate structure in this utility model.

[0026] Figure 7 This is a schematic diagram of the splicing structure of two adjacent steel truss floor slabs (with the steel truss and connecting components hidden) in this utility model.

[0027] Figure 8 for Figure 7 Enlarged view of section B in the middle.

[0028] Explanation of the labels in the diagram:

[0029] 1. Mounting plate; 2. Fixing screw; 3. Fixing ring; 4. Connecting sleeve; 5. Fixing sleeve; 6. Limiting ring; 61. Arc groove; 7. Steel truss; 71. Top chord reinforcement; 72. Bottom chord reinforcement; 721. Conical section; 73. Web reinforcement; 8. First joint; 9. Snap-fit ​​groove; 10. Snap-fit ​​block; 11. Positioning bolt; 12. Second joint; 13. Mounting sleeve; 14. Positioning block; 15. Friction plate; 16. Base plate; 17. Square tube; 18. Mounting hole; 19. Semicircular groove. Detailed Implementation

[0030] Please see Figures 1 to 8 This utility model provides a steel truss floor deck, including: mounting plate 1, steel truss 7 and connecting components;

[0031] The steel truss 7 is fixed to the top of the mounting plate 1 by a connecting assembly;

[0032] The steel truss 7 includes: an upper chord steel bar 71, a lower chord steel bar 72, and a web steel bar 73, wherein the web steel bar 73 is fixed between the upper chord steel bar 71 and the lower chord steel bar 72 by welding.

[0033] The connecting assembly includes a connecting sleeve 4, a fixing sleeve 5, and an mounting sleeve 13. The fixing sleeve 5 and the mounting sleeve 13 are respectively fixed to the front and rear ends of the mounting plate 1. The connecting sleeve 4 is connected to the fixing sleeve 5 by a fixing screw 2. A fixing ring 3 is symmetrically arranged on the outer side of the connecting sleeve 4. One end of the fixing screw 2 passes through the fixing ring 3 and is threaded to the fixing sleeve 5. The mounting sleeve 13 has a mounting hole 18. One end of the lower chord steel bar 72 is inserted into the mounting hole 18. The other end of the lower chord steel bar 72 is provided with a limiting ring 6. The outer wall of the limiting ring 6 is provided with an arc-shaped groove 61. The fixing sleeve 5 and the connecting sleeve 4 are respectively provided with semi-circular grooves 19 that match the arc-shaped groove 61. After the fixing sleeve 5 and the connecting sleeve 4 are fixedly connected, the fixing sleeve 5 and the connecting sleeve 4 hug the outer wall of the arc-shaped groove 61 to fix the lower chord steel bar 72.

[0034] Specifically, the mounting plate 1 includes a base plate 16 and a square tube 17 welded and fixed below the base plate 16. Along the outer contour of the base plate 16, the square tube 17 is connected end to end to form a closed frame. The fixing sleeve 5 and the mounting sleeve 13 are arranged on the upper side of the base plate 16.

[0035] Specifically, the mounting hole 18 is a tapered hole, and one end of the lower chord steel bar 72 is provided with a tapered section 721 that matches the tapered hole, and the tapered section 721 is inserted into the tapered hole.

[0036] Specifically, the mounting plate 1 has a first joint 8 and a second joint 12 on its left and right sides, respectively. The second joint 12 has a snap-fit ​​block 10 with a T-shaped cross-section, which extends in the front-rear direction of the mounting plate 1. The first joint 8 has a snap-fit ​​groove 9 that matches the snap-fit ​​block 10. When two adjacent steel truss 7 floor decks are spliced, the snap-fit ​​block 10 on one steel truss 7 floor deck is inserted into the snap-fit ​​groove 9 on the other steel truss 7 floor deck and fixed by a positioning bolt 11. The snap-fit ​​block 10 has a threaded hole, and the snap-fit ​​groove 9 has a through hole. One end of the positioning bolt 11 passes through the through hole and connects to the threaded hole. Viewed from the front-rear direction of the mounting plate 1, one end of the snap-fit ​​groove 9 is open and the other end is closed. After the snap-fit ​​block 10 is pushed into its limit position, the two steel truss 7 floor decks are aligned.

[0037] Specifically, the upper surfaces of both the first joint 8 and the second joint 12 are downward sloping surfaces. This arrangement allows the concrete to spread downwards to fill the gap between the first joint 8 and the second joint 12.

[0038] Specifically, the top of the fixing sleeve 5 is provided with a positioning block 14, and the bottom of the connecting sleeve 4 is provided with a positioning groove. When the connecting sleeve 4 is connected to the fixing sleeve 5, the positioning block 14 is inserted into the positioning groove. The positioning plate is used for the installation of the fixing sleeve 5 and the connecting sleeve 4, making it convenient for workers to install and connect the two.

[0039] Specifically, the end of the fixing bolt has a rectangular groove, and a friction plate 15 is disposed in the rectangular groove, with the friction plate 15 protruding from the rectangular groove. During use, the friction plate 15 on the fixing bolt allows for easy disassembly by the operator.

[0040] One specific application of this utility model is:

[0041] (1) When the steel truss 7 is deformed during transportation or installation, the workers can loosen the fixing bolts to separate the fixing sleeve 5 and the connecting sleeve 4. After the fixing sleeve 5 and the connecting sleeve 4 are separated, the steel truss 7 is pulled along the length of the mounting plate 1 so that the tapered section 721 of the lower chord steel bar 72 is pulled out from the mounting sleeve 13. At this time, the steel truss 7 can be separated from the mounting plate 1 to maintain the floor deck of the steel truss 7.

[0042] When installing a new steel truss 7, the tapered section 721 of the lower chord steel bar 72 is first inserted into the tapered hole. The outer side of the steel bar usually has ribs. If the mounting sleeve 13 has a cylindrical hole and the end of the lower chord steel bar 72 is not machined, a gap may easily exist between the mounting hole 18 and the lower chord steel bar 72. To make the lower chord steel bar 72 fit more tightly into the mounting sleeve 13, the end of the lower chord steel bar 72 is usually machined. The end of the lower chord steel bar 72 is machined into a tapered section 721, and the mounting sleeve 13 is machined into a tapered hole. After the tapered section 721 is inserted into the tapered hole, due to the radial convergence characteristic of the tapered surface, the tapered section 721 will always contact the tapered hole, thus reducing the machining accuracy of the lower chord steel bar 72.

[0043] After the tapered section 721 is inserted into the tapered hole, the arc-shaped groove 61 aligns with the semi-circular groove 19 on the fixing sleeve 5. The connecting sleeve 4 is then placed over the fixing sleeve 5, enclosing the limiting ring 6. The fixing bolts are then tightened, thus completing the fixation of the steel truss 7. At this point, the connecting sleeve 4 and the fixing sleeve 5 are locked in the arc-shaped groove 61 of the limiting ring 6, preventing displacement of the steel truss 7 and the fixing sleeve 5.

[0044] This invention, through its separable structure of the steel truss 7 and mounting plate 1, facilitates maintenance and replacement of the steel truss 7 by workers, preventing deformation of the steel truss 7 from affecting the overall quality of the device. Furthermore, one end of the steel truss 7 is inserted into the mounting sleeve 13, while the other end is locked in place by the fixing sleeve 5 and the connecting sleeve 4. When disassembling the steel truss 7, only the bolts at one end need to be removed, further simplifying maintenance and replacement for workers.

[0045] (2) When splicing several steel truss 7 floor decks, for two adjacent steel truss 7 floor decks, the worker inserts the snap-fit ​​block 10 on one of the steel truss 7 floor decks into the snap-fit ​​groove 9 on the other steel truss 7 floor deck, and fixes it with positioning bolts 11, so that the two adjacent steel truss 7 floor decks are connected into one.

[0046] After installation, workers can begin pouring concrete. Since the upper surfaces of both the first joint 8 and the second joint 12 are downward-sloping, the concrete can spread downwards during pouring, closing the gap between the two joints. This design facilitates the assembly of the device and improves the connection and tightness between the panels.

[0047] The advantages of this utility model are as follows: The separable structure of the steel truss 7 and the mounting plate 1 facilitates maintenance and replacement of the steel truss 7, preventing deformation of the steel truss 7 from affecting the overall quality of the device. Furthermore, one end of the steel truss 7 is inserted into the mounting sleeve 13, and the other end is locked in place by the fixing sleeve 5 and the connecting sleeve 4. When disassembling the steel truss 7, only the bolts at one end need to be removed, further facilitating maintenance and replacement. When splicing several steel truss 7 floor decks, adjacent steel truss 7 floor decks are spliced ​​using the snap-fit ​​block 10 and snap-fit ​​groove 9, which facilitates splicing work and improves the connectivity and tightness of the steel truss 7 floor decks.

[0048] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A steel truss floor deck, characterized in that: include: Mounting plates, steel trusses, and connecting components; The steel truss is fixed to the top of the mounting plate by connecting components; The steel truss includes: top chord steel bars, bottom chord steel bars and web steel bars, wherein the web steel bars are fixed between the top chord steel bars and the bottom chord steel bars by welding. The connecting assembly includes a connecting sleeve, a fixing sleeve, and an mounting sleeve. The fixing sleeve and the mounting sleeve are respectively fixed to the front and rear ends of the mounting plate. The connecting sleeve is connected to the fixing sleeve by fixing screws. The mounting sleeve has a mounting hole. One end of the lower chord reinforcing bar is inserted into the mounting hole. The other end of the lower chord reinforcing bar is provided with a limit ring. The outer wall of the limit ring is provided with an arc-shaped groove. The fixing sleeve and the connecting sleeve are respectively provided with semi-circular grooves that match the arc-shaped grooves. After the fixing sleeve and the connecting sleeve are fixedly connected, the fixing sleeve and the connecting sleeve hug the outer wall of the arc-shaped groove to fix the lower chord reinforcing bar.

2. The steel truss floor deck as described in claim 1, characterized in that: The mounting plate includes a base plate and a square tube welded and fixed below the base plate. Along the outer contour of the base plate, the square tubes are connected end to end to form a closed frame. The fixing sleeve and the mounting sleeve are disposed on the upper side of the base plate.

3. A steel truss floor deck as described in claim 1, characterized in that: The mounting hole is a tapered hole, and one end of the lower chord steel bar is provided with a tapered section that matches the tapered hole, and the tapered section is inserted into the tapered hole.

4. A steel truss floor deck as described in claim 1, characterized in that: The mounting plate has a first joint and a second joint on its left and right sides, respectively. The second joint has a snap-fit ​​block with a T-shaped cross-section. The snap-fit ​​block extends in the front-rear direction of the mounting plate. The first joint has a snap-fit ​​groove that matches the snap-fit ​​block. When two adjacent steel truss floor decks are spliced, the snap-fit ​​block on one steel truss floor deck is inserted into the snap-fit ​​groove on the other steel truss floor deck and fixed by positioning bolts.

5. A steel truss floor deck as described in claim 4, characterized in that: The upper surfaces of both the first and second joints are downward-sloping surfaces.

6. A steel truss floor deck as described in claim 1, characterized in that: The top of the fixed sleeve is provided with a positioning block, and the bottom of the connecting sleeve is provided with a positioning groove. When the connecting sleeve is connected to the fixed sleeve, the positioning block is inserted into the positioning groove.

7. A steel truss floor deck as described in claim 1, characterized in that: The end of the fixing screw has a rectangular groove, and a friction plate is provided in the rectangular groove, with the friction plate protruding from the rectangular groove.

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