A prefabricated assembled steel truss floor deck

Abstract

This invention discloses a prefabricated assembled steel truss floor deck, belonging to the technical field of building floor decks. The invention includes a floor deck and a steel truss, connected by a fixing mechanism. The fixing mechanism includes pressure plates and sliding rods. Two pressure plates are arranged opposite each other for fixing the steel truss, and each pressure plate is connected to a locking block located in a first receiving groove on the floor deck. The sliding rod is set in a second receiving groove on the floor deck via a fixing block, and two sliders are sleeved on it. The sliders are connected to a driving assembly, which drives the two sliders to move synchronously and engage with the locking block, completing the connection between the floor deck and the steel truss. This invention, through the fixing mechanism, enables rapid assembly and disassembly between the floor deck and the steel truss. Furthermore, through the connecting mechanism, stable connections between different floor decks can be achieved.

Description

Technical Field

[0001] This invention belongs to the field of building floor decking technology, and more specifically, relates to a prefabricated assembled steel truss floor decking. Background Technology

[0002] Steel truss floor decking is a newly developed building material in recent years, and it has been widely used in various steel structure buildings and municipal construction. Currently, steel truss floor decking is manufactured by welding three specifications of steel bars together to form a steel truss. Furthermore, in order to allow the bottom formwork to be disassembled after the concrete is poured and cured, so as to achieve the purpose of reusing the bottom formwork and reducing construction costs.

[0003] A search revealed Chinese Patent Application Publication No. CN108756036A, which discloses a prefabricated lightweight steel truss floor deck. This application includes a floor deck and a steel truss. The steel truss includes an upper chord steel bar, a lower chord steel bar, and web steel bars connecting the upper and lower chord steel bars. It also includes a connector, which has a first slot for engaging with the upper chord steel bar and a second slot for engaging with the lower chord steel bar. The connector is detachably connected to the floor deck by fasteners, and the steel truss is engaged with the connector.

[0004] For example, Chinese Patent Application No. CN212295251U discloses a steel truss floor deck, which includes: a bottom formwork, a steel truss and a fastener. The fastener fixes the steel truss to the bottom formwork. The bottom formwork is fixed with at least one handrail. The handrail protrudes from the bottom formwork and has a handrail locking part for locking and fixing.

[0005] The two patent documents mentioned above use multiple connectors or fasteners to connect and fix the lower chord steel bars to the floor deck, which requires multiple positioning and locking operations, making the whole process relatively cumbersome and not conducive to the rapid assembly of the steel truss and the floor deck. Summary of the Invention

[0006] 1. The problem to be solved

[0007] In the existing technology, the lower chord reinforcement is connected to the floor slab using multiple clips, resulting in a relatively cumbersome connection process and hindering rapid assembly between the steel truss and the floor slab. This invention provides a prefabricated steel truss floor slab. The technical solution of this invention enables rapid assembly between the steel truss and the floor slab, thereby improving construction efficiency.

[0008] 2. Technical Solution

[0009] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0010] The present invention provides a prefabricated assembled steel truss floor deck, comprising a floor deck and a steel truss, wherein the floor deck and the steel truss are connected by a fixing mechanism;

[0011] The fixing mechanism includes pressure plates and sliding rods; wherein, two pressure plates are arranged opposite each other for fixing the steel truss, and the pressure plates are connected to locking blocks, which are located in the first receiving groove on the floor deck.

[0012] The sliding rod is set in the second receiving groove on the floor deck through a fixing block, and two sliders are sleeved on it. The sliders are connected to a driving component, which drives the two sliders to move synchronously and engage with the locking block to complete the connection between the floor deck and the steel truss.

[0013] Furthermore, the drive assembly includes a push rod mounted on a fixed block, a lifting block sleeved on the push rod, and movable rods connected to both sides of the lifting block, the other end of which is connected to a corresponding slider.

[0014] Furthermore, the lifting block is also connected to a first spring and a side block; wherein, the first spring is sleeved on the top rod and is confined between the lifting block and the fixed block; the side block is connected to a screw rod, one end of which is connected to the floor deck, and the other end passes through the side block and is fitted with a nut.

[0015] Furthermore, the slider is provided with a rod, and the card block is provided with a socket for inserting the rod.

[0016] Furthermore, there are two locking blocks located at the bottom of the pressure plate; the bottom of the pressure plate is also provided with two limiting grooves, which are used to engage the two lower chord steel bars of the steel truss.

[0017] Furthermore, it also includes a connecting mechanism for connecting two floor decks, the connecting mechanism including a first connecting plate and a limiting component; wherein, the side of the first connecting plate is provided with a connecting groove for the connecting block on the floor deck to be inserted; the limiting component is located in a third receiving groove on the first connecting plate and is used to lock and limit the connecting block located in the connecting groove.

[0018] Furthermore, the limiting component includes a lifting plate and a movable plate distributed vertically; wherein, the movable plate is sleeved on a vertical rod disposed in a third receiving groove, and a second spring is sleeved on the vertical rod; the movable plate is connected to the lifting plate through a connecting column, and a first limiting block is connected to the side of the lifting plate, and a limiting rod on the first limiting block is inserted into a limiting hole on the connecting block to lock the connecting block.

[0019] Furthermore, the connecting groove is provided in three parts, and each connecting groove has a notch at the top for the limiting rod to pass through, and the notch is adapted to the first limiting block.

[0020] Furthermore, the connecting mechanism also includes a locking assembly, which includes a second connecting plate, a third connecting plate, and a second limiting block connected in sequence; wherein the second connecting plate is disposed on the first connecting plate, and the second limiting block engages with the third limiting block disposed on the floor deck.

[0021] Furthermore, the third limiting block is provided with a slot for the second limiting block to be inserted, and both the second and third limiting blocks are provided with fastening holes for bolts to pass through.

[0022] 3. Beneficial effects

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] (1) A prefabricated assembled steel truss floor deck of the present invention, wherein the floor deck and the steel truss are connected by a fixing mechanism, the fixing mechanism including a pressure plate and a sliding rod, wherein the sliding rod is fitted with a slider and the slider is connected to a driving component; during assembly, the pressure plate presses the two lower chord steel bars of the steel truss together, at which time the locking block on the pressure plate is locked in the first receiving groove of the floor deck; at the same time, the sliding rod is set in the second receiving groove of the floor deck by a fixing block; then the driving component drives the slider to move away from each other, so that the insertion rod on the slider is inserted into the insertion hole on the locking block, thereby realizing the rapid conversion between the floor deck and the steel truss.

[0025] (2) The prefabricated steel truss floor deck of the present invention, through further optimization design of the specific structure of the drive component, after the insertion rod and the insertion hole are engaged with each other to complete the connection between the floor deck and the steel truss, the side block can be fixed by adjusting the position of the nut, thereby fixing the lifting block and the slider, which can effectively prevent the pressure plate from moving, thus ensuring the stability of the connection between the floor deck and the steel truss.

[0026] (3) In a prefabricated steel truss floor deck of the present invention, a connecting groove is provided on the side of the first connecting plate, and a connecting block is provided on the side of the floor deck. The quick connection between the two floor decks can be achieved by the mutual engagement of the connecting block and the connecting groove. At the same time, by setting the limiting component, when the connecting block is engaged in the connecting groove, the limiting rod on the first limiting block is inserted into the limiting hole on the connecting block, which can ensure the stability of the connection between the connecting block and the first connecting plate. In addition, by setting the locking component, when the limiting component completes the limiting of the connecting block, the second limiting block of the locking component is engaged in the groove on the third limiting block, and then locked by bolts, which can effectively improve the stability of the limiting component, thereby making the splicing between the two floor decks more secure. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of an improved prefabricated steel truss floor deck.

[0028] Figure 2 This is a schematic diagram of the floor decking structure in Example 1;

[0029] Figure 3 This is a schematic diagram of the steel truss structure in Example 1;

[0030] Figure 4 This is a schematic diagram of the fixing mechanism in Example 1;

[0031] Figure 5 This is a schematic diagram of the pressure plate structure in Example 1;

[0032] Figure 6 This is a schematic diagram of the drive component in Example 1;

[0033] Figure 7 This is a schematic diagram of the structure of the first connecting plate in Embodiment 2;

[0034] Figure 8 This is a schematic diagram of the limiting component in Example 2;

[0035] Figure 9 This is a schematic diagram of the locking assembly in Example 3;

[0036] Figure 10 This is a schematic diagram of the floor decking structure in Example 4.

[0037] In the diagram: 1. Floor decking; 11. First receiving groove; 12. Second receiving groove; 13. Connecting block; 131. Limiting hole;

[0038] 2. Steel truss; 21. Top chord reinforcement; 22. Bottom chord reinforcement; 23. Web reinforcement;

[0039] 3. Fixing mechanism; 31. Pressure plate; 311. Limiting groove; 32. Slide rod; 33. Locking block; 331. Insertion hole; 34. Fixing block; 35. Sliding block; 351. Insertion rod;

[0040] 36. Drive assembly; 361. Top rod; 362. Lifting block; 363. Movable rod; 364. First spring; 365. Side block; 366. Screw; 367. Nut;

[0041] 4. Connecting mechanism; 41. First connecting plate; 411. Connecting groove; 412. Third receiving groove; 413. Notch;

[0042] 42. Limiting component; 421. Lifting plate; 422. Movable plate; 423. Vertical rod; 424. Second spring; 425. Connecting column; 426. First limiting block; 427. Limiting rod;

[0043] 43. Locking assembly; 431. Second connecting plate; 432. Third connecting plate; 433. Second limiting block; 434. Third limiting block; 435. Groove; 436. Fastening hole; 437. Bolt. Detailed Implementation

[0044] The present invention will be further described below with reference to specific embodiments.

[0045] Example 1

[0046] like Figure 1 As shown, a prefabricated assembled steel truss floor deck of this embodiment includes a floor deck 1 and a steel truss 2 disposed on the floor deck 1, wherein the floor deck 1 and the steel truss 2 are connected by a fixing mechanism 3.

[0047] like Figure 3 As shown, the steel truss 2 includes an upper chord steel bar 21, a lower chord steel bar 22, and web steel bars 23. There is one upper chord steel bar 21, and two lower chord steel bars 22 and two web steel bars 23. The two web steel bars 23 are respectively positioned between the upper chord steel bar 21 and the corresponding lower chord steel bar 22, thereby connecting the upper chord steel bar 21 and the lower chord steel bar 22 into a single unit. The web steel bars 23 are curved in a serpentine shape, with two adjacent bending points welded to the upper chord steel bar 21 and the lower chord steel bar 22, respectively.

[0048] like Figure 4 As shown, the fixing mechanism 3 includes a pressure plate 31, a sliding rod 32, a locking block 33, a fixing block 34, and a sliding block 35. Two pressure plates 31 are arranged opposite each other to fix the steel truss 2, thereby completing the connection between the steel truss 2 and the floor slab 1.

[0049] The card block 33 is disposed at the bottom of the pressure plate 31, and the card block 33 is located in the corresponding first receiving groove 11 on the floor deck 1.

[0050] The fixing block 34 is disposed in the second receiving groove 12 on the floor deck 1. The sliding rod 32 passes through the fixing block 34 and is also located in the second receiving groove 12.

[0051] Two sliders 35 are fitted onto the slide rod 32, and each slider 35 is connected to a drive assembly 36. The drive assembly 36 drives the two sliders 35 to move synchronously and engage with the locking block 33 to complete the connection between the floor deck 1 and the steel truss 2.

[0052] Specifically, referring to Figure 5, in order to ensure the stability of the connection between the pressure plate 31 and the floor deck 1, the pressure plate 31 is connected to two locking blocks 33, and the bottom of the pressure plate 31 is provided with two limiting grooves 311, which are used to lock the two lower chord steel bars 22 of the steel truss 2. Of course, the bottom of the pressure plate 31 may only have one locking block 33, or more.

[0053] In addition, the card block 33 is provided with an insertion hole 331, and the slider 35 is provided with an insertion rod 351 that cooperates with the insertion hole 331. It should be noted that a through hole for the insertion rod 351 to pass through is required in the connecting part between the first receiving groove 11 and the second receiving groove 12.

[0054] like Figure 6 As shown, the drive assembly 36 includes a top rod 361, a lifting block 362, and a movable rod 363. One end of the top rod 361 is mounted on the fixed block 34, and the other end is fitted with a cap. The lifting block 362 is sleeved on the top rod 361. The cap limits the movement of the lifting block 362, preventing it from detaching from the top rod 361.

[0055] The top rod 361 is also fitted with a first spring 364, which is confined between the lifting block 362 and the fixed block 34.

[0056] The movable rod 363 is provided in two parts, one end of which is hinged to the side wall of the lifting block 362, and the other end is hinged to the corresponding slider 35.

[0057] In addition, the lifting block 362 is also connected to the side block 365. The side block 365 is connected to a screw 366, one end of which is connected to the floor deck 1, and the other end passes through the side block 365 and is fitted with a nut 367. Preferably, there are two nuts 367, which clamp the side block 365 in the middle.

[0058] In this embodiment, the first receiving groove 11 and the second receiving groove 12 opened on the floor deck 1 are for assisting in the installation of the fixing mechanism 3. Their specific number is determined by the number of locking blocks 33 and sliding rods 32 of each fixing mechanism 3. The specific number of fixing mechanisms 3 is determined by the number of steel trusses 2 that need to be installed on each floor deck 1, and each steel truss 2 is equipped with one fixing mechanism 3.

[0059] Specifically in this embodiment, refer to Figure 1 , Figure 2 As shown, each floor deck 1 is equipped with 3 steel trusses 2. Each fixing mechanism 3 includes 4 locking blocks 33 and 2 sliding rods 32. Thus, each floor deck 1 is provided with 12 first receiving slots 11 and 6 second receiving slots 12, and the first receiving slots 11 are respectively located at the two ends of the corresponding second receiving slots 12.

[0060] The working principle and steps of a prefabricated assembled steel truss floor slab according to this embodiment are as follows:

[0061] First, pull the lifting block 362 upward, and the movable rod 363 will drive the sliders 35 to move closer to each other. The insertion rod 351 on the slider 35 will also move and retract into the second receiving groove 12. At this time, the first spring 364 will be stretched.

[0062] Then, place the steel truss 2 at the corresponding position on the floor deck 1; next, place the two pressure plates 31 at the positions near both ends of the steel truss 2; the lower chord steel bar 22 of the steel truss 2 is locked by the limiting groove 311 on the pressure plate 31; at this time, the locking block 33 on the pressure plate 31 is exactly located in the second receiving groove 12 on the floor deck 1.

[0063] Next, the control of the lifting block 362 is released; the first spring 364 drives the lifting block 362 to move down, and through the movable rod 363 drives the slider 35 to move away from each other until the insertion rod 351 on the slider 35 passes through the through hole between the two receiving slots and is inserted into the insertion hole 331 on the corresponding card block 33 to complete the limiting of the card block 33, thereby fixing the steel truss 2 to the floor deck 1 through the pressure plate 31.

[0064] Finally, the adjusting nut 367 clamps and fixes the side block 365 to lock the entire drive assembly 36, preventing the pressure plate 31 from moving and thus ensuring the stability of the pressure plate 31 in fixing the steel truss 2.

[0065] Example 2

[0066] In this embodiment, a prefabricated steel truss floor deck is provided with a connecting mechanism 4, which connects two floor decks 1 through a connecting block 13 on the side of the floor deck 1.

[0067] like Figure 7 As shown, the connecting mechanism 4 includes a first connecting plate 41 and a limiting component 42. The first connecting plate 41 has a connecting groove 411 on its side for the connecting block 13 on the floor deck 1 to engage. The top of the first connecting plate 41 also has a third receiving groove 412 for accommodating the limiting component 42, which locks and limits the connecting block 13 located within the connecting groove 411.

[0068] Specifically, refer to Figure 8 As shown, the limiting component 42 includes a lifting plate 421, a movable plate 422, and a vertical rod 423. One end of the vertical rod 423 is fitted with a cap, and the other end passes through the movable plate 422 and is fixed within a third receiving groove 412 on the first connecting plate 41. A second spring 424 is fitted onto the vertical rod 423, and the second spring 424 is positioned between the cap of the vertical rod 423 and the upper surface of the movable plate 422.

[0069] The lifting plate 421 is positioned above the movable plate 422 via a connecting column 425, and the lifting plate 421 exactly covers the opening of the third receiving groove 412.

[0070] A first limiting block 426 is connected to the side of the lifting plate 421, and a limiting rod 427 is connected to the bottom of the first limiting block 426. When the connecting block 13 is inserted into the connecting groove 411, the limiting rod 427 is inserted into the limiting hole 131 on the connecting block 13 through the notch 413 at the top of the connecting groove 411, thereby locking the connecting block 13. Preferably, the shape of the notch 413 is adapted to the first limiting block 426.

[0071] Specifically, in this embodiment, three connecting grooves 411 are provided, extending from one side of the first connecting plate 41 to the other side, and the third receiving groove 412 is located in the middle of the top of the first connecting plate 41. The connecting grooves 411 on both sides are I-shaped grooves, and the corresponding connecting blocks 13 are also I-shaped. Furthermore, the first limiting blocks 426 are distributed along both sides of the lifting plate 421, and their positions correspond one-to-one with the connecting grooves 411.

[0072] The working principle and operation process of a prefabricated assembled steel truss floor slab in this embodiment are as follows:

[0073] When it is necessary to connect the two floor decks 1, first pull the lifting plate 421 upward, and drive the movable plate 422 to move upward through the connecting column 425, while squeezing the second spring 424.

[0074] Then, the connecting blocks 13 on the two floor deck 1 are respectively inserted into the connecting grooves 411 on both sides of the lifting plate 421;

[0075] Next, the lifting plate 421 is released. Under the restoring force of the second spring 424, the movable plate 422 drives the lifting plate 421 to move downward through the connecting column 425. The first limiting blocks 426 on both sides of the lifting plate 421 move downward simultaneously until the limiting rod 427 on the first limiting block 426 is inserted into the limiting hole 131 on the corresponding connecting block 13, thus locking the connecting block 13. At this time, the lifting plate 421 is exactly covered by the opening of the third receiving groove 412, and the first limiting block 426 is exactly covered by the notch 413 at the top of the first connecting plate 41.

[0076] Example 3

[0077] In this embodiment of a prefabricated steel truss floor deck, based on the above embodiment, the connecting mechanism 4 further includes a locking component 43, which locks and limits the limiting component 42 to prevent the limiting component 42 from shaking or even moving, thereby interfering with the connection stability between the floor decks 1.

[0078] like Figure 9 As shown, the locking assembly 43 includes a second connecting plate 431, a second limiting block 433, and a third limiting block 434. The second connecting plate 431 is disposed on the first connecting plate 41, and a third connecting plate 432 is connected to one side of the second connecting plate 431. The second limiting block 433 is disposed at the bottom of the third connecting plate 432.

[0079] The third limiting block 434 is installed on the floor deck 1, and the third limiting block 434 has a slot 435 for the second limiting block 433 to be inserted. Both the second limiting block 433 and the third limiting block 434 have fastening holes 436 for bolts 437 to pass through.

[0080] In this embodiment of a prefabricated steel truss floor deck, after the limiting component 42 locks and limits the connecting block 13, the second limiting block 433 extends into the slot 435 on the third limiting block 434. Then, the second limiting block 433 is locked with bolts 437, thereby fixing and limiting the lifting plate 421.

[0081] Example 4

[0082] To further ensure the stability of the connection between the two floor slabs 1, this implementation adopts a prefabricated steel truss floor slab. By optimizing the specific distribution of the second receiving groove 12 on the floor slab 1, a steel truss 2 is installed across the two floor slabs 1, thereby improving the connection stability between the two floor slabs 1.

[0083] refer to Figure 10As shown, a second receiving groove 12 is provided on each side near the opposite sides of the floor deck 1, and a first receiving groove 11 is provided at both ends of each second receiving groove 12. Thus, when two floor decks 1 are connected, the two second receiving grooves 12 on adjacent floor decks 1 form a group for installation by a fixing mechanism 3. That is, the two lower chord steel bars 22 of the steel truss 2 are respectively fixed to different floor decks 1, thereby further improving the stability of the connection between the two floor decks 1.

[0084] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A prefabricated assembled steel truss floor deck, comprising a floor deck (1) and a steel truss (2), characterized in that: The floor deck (1) and the steel truss (2) are connected by a fixing mechanism (3); The fixing mechanism (3) includes a pressure plate (31) and a sliding rod (32); wherein, there are two pressure plates (31) arranged opposite each other for fixing the steel truss (2), and the pressure plate (31) is connected to a locking block (33), which is located in the first receiving groove (11) on the floor deck (1); The slide bar (32) is set in the second receiving groove (12) on the floor deck (1) by a fixing block (34), and two sliders (35) are sleeved on it. The sliders (35) are connected to a driving component (36). The driving component (36) drives the two sliders (35) to move synchronously and engage with the locking block (33) to complete the connection between the floor deck (1) and the steel truss (2). The drive assembly (36) includes a push rod (361) mounted on a fixed block (34), a lifting block (362) sleeved on the push rod (361), and movable rods (363) connected to both sides of the lifting block (362). The other end of the movable rods (363) is connected to the corresponding sliders (35). The lifting block (362) is also connected to a first spring (364) and a side block (365); wherein the first spring (364) is sleeved on the top rod (361) and is limited between the lifting block (362) and the fixed block (34); the side block (365) is connected to a screw (366), one end of which is connected to the floor deck (1), and the other end passes through the side block (365) and is fitted with a nut (367); The slider (35) is provided with a plug rod (351), and the locking block (33) is provided with a socket (331) for inserting the plug rod (351). The pressure plate (31) is also provided with two limiting grooves (311) at the bottom, which are used to engage the two lower chord steel bars (22) of the steel truss (2).

2. The prefabricated assembled steel truss floor slab according to claim 1, characterized in that: There are two card blocks (33), which are located at the bottom of the pressure plate (31).

3. A prefabricated assembled steel truss floor slab according to any one of claims 1-2, characterized in that: It also includes a connecting mechanism (4) for connecting two floor decks (1), the connecting mechanism (4) including a first connecting plate (41) and a limiting component (42); wherein, the side of the first connecting plate (41) is provided with a connecting groove (411) for the connecting block (13) on the floor deck (1) to be inserted; the limiting component (42) is located in the third receiving groove (412) on the first connecting plate (41) and is used to lock and limit the connecting block (13) located in the connecting groove (411).

4. A prefabricated assembled steel truss floor slab according to claim 3, characterized in that: The limiting component (42) includes a lifting plate (421) and a movable plate (422) distributed vertically; wherein the movable plate (422) is sleeved on a vertical rod (423) provided in a third receiving groove (412), and a second spring (424) is sleeved on the vertical rod (423); the movable plate (422) is connected to the lifting plate (421) through a connecting column (425), and a first limiting block (426) is connected to the side of the lifting plate (421), and a limiting rod (427) on the first limiting block (426) is inserted into a limiting hole (131) on the connecting block (13) to lock the connecting block (13).

5. A prefabricated assembled steel truss floor slab according to claim 4, characterized in that: The connecting groove (411) is provided in three parts. Each connecting groove (411) has a notch (413) at the top for the limiting rod (427) to pass through, and the notch (413) is adapted to the first limiting block (426).

6. A prefabricated assembled steel truss floor slab according to claim 5, characterized in that: The connecting mechanism (4) further includes a locking component (43), which includes a second connecting plate (431), a third connecting plate (432), and a second limiting block (433) connected in sequence; wherein the second connecting plate (431) is disposed on the first connecting plate (41), and the second limiting block (433) is engaged with the third limiting block (434) disposed on the floor deck (1).

7. A prefabricated assembled steel truss floor slab according to claim 6, characterized in that: The third limiting block (434) is provided with a slot (435) for the second limiting block (433) to be inserted, and both the second limiting block (433) and the third limiting block (434) are provided with fastening holes (436) for the bolt (437) to pass through.

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