Assembled steel truss floor deck
By using splicing components and sealing components in the reinforced truss bearing plates to achieve seamless splicing, the splicing gap problem is solved, concrete leakage is avoided, and the strength of concrete is improved.
Patent Information
- Application Number
- CN202411288529.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2044-09-14
AI Technical Summary
There are splicing gaps in existing reinforced truss bearing plates when splicing, resulting in mortar leakage during concrete pouring, resulting in a decrease in concrete strength.
The splicing assembly is adopted, including the upper and lower stacking parts, and seamless splicing is achieved through the plug-in positioning assembly and the sealing assembly, and the gap is sealed with the locking assembly and the sealing airbag assembly to avoid concrete leakage.
Effectively reduce the gaps during splicing of steel bar truss floor bearing plates, prevent mortar leakage during concrete pouring, and improve concrete strength.
Smart Images
Figure CN118815047B_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of prefabricated buildings, and in particular to a prefabricated steel truss floor deck. Background Art
[0002] At present, steel truss floor decking is widely used in steel structure buildings such as power plants, automobile showrooms, airport terminals, railway stations, and stadiums due to its stable quality, uniform distribution of steel bars, and precise size. Among them, steel truss floor decking generally includes a base plate and a steel truss connected to the base plate. The existing steel truss is fixed to the base plate by connecting fasteners. The steel truss floor decking can meet the requirements of rapid construction of the main steel structure and provide a firm working platform in a short time. The steel truss floor decking does not need to be equipped with a supporting formwork during construction, which can reduce the amount of on-site steel bar binding work.
[0003] Existing steel truss floor decking includes detachable steel truss floor decking and non-detachable steel truss floor decking. The existing non-detachable steel truss floor decking includes a base plate and a steel truss. When using the non-detachable steel truss floor decking, both ends of the base plate are erected on the top of the frame beam or the shear wall, and then several steel truss floor decks are spliced into a casting platform, and then several steel truss floor decks are connected as a whole with steel bars, and finally a solid platform is formed for pouring concrete.
[0004] The above-mentioned existing technical solutions have the following defects: when the existing steel truss floor decks are spliced, there are splicing gaps between adjacent base plates, which causes concrete mortar leakage when pouring concrete, resulting in voids and pores in the concrete at the splicing of the steel truss floor decks, thereby reducing the strength of the concrete. Summary of the invention
[0005] In order to achieve the purpose of reducing the gap when the steel truss floor deck is spliced, the present application provides an assembled steel truss floor deck.
[0006] The above technical objectives of this application are achieved through the following technical solutions:
[0007] An assembled steel bar truss floor deck comprises a bottom plate and a steel bar truss, wherein a plurality of steel bar trusses are arranged and evenly distributed on the bottom plate, each steel bar truss is fixedly connected to the bottom plate, and the bottom plate is provided with a splicing assembly, and the splicing assembly is used to seamlessly splice two adjacent bottom plates; the splicing assembly comprises an upper overlapping portion and a lower overlapping portion, the upper overlapping portion and the lower overlapping portion are symmetrically arranged along the length direction of the bottom plate, the upper overlapping portion and the lower overlapping portion are fixedly connected to the bottom plate, and when two adjacent bottom plates are spliced, the upper overlapping portion and the lower overlapping portion are seamlessly abutted, and a plug-in positioning assembly is arranged between the upper overlapping portion and the lower overlapping portion;
[0008] The plug-in positioning assembly includes a plug-in block and a plug-in slot. The plug-in block is fixedly connected to the upper overlapping part, and the plug-in slot is arranged in the lower overlapping part. The plug-in block is plugged into and matched with the plug-in slot. A locking assembly is arranged in the plug-in slot. When the upper overlapping part and the lower overlapping part are abutted, the locking assembly is used to fix the plug-in block in the plug-in slot. A sealing assembly is also arranged between the upper overlapping part and the lower overlapping part. After the locking assembly locks the plug-in block, the sealing assembly is triggered to seal the upper overlapping part and the lower overlapping part.
[0009] Further, the locking assembly includes a locking rod and a first elastic member, a accommodating cavity is provided on the side wall of the plug-in slot, the locking rod and the first elastic member are both located in the accommodating cavity, the locking rod is slidably connected to the accommodating cavity, a sliding hole is provided on the side wall of the accommodating cavity, one end of the locking rod is located in the sliding hole, the locking rod is slidably connected to the sliding hole, the elastic member is located at the end of the locking rod away from the sliding hole, both ends of the elastic member are respectively fixedly connected to the locking rod and the side wall of the accommodating cavity, a locking hole is provided on the plug-in block, when the upper overlapping part and the lower overlapping part abut, the locking hole is connected to the sliding hole, the locking rod is inserted into the locking hole, and the locking rod is slidably connected to the locking hole.
[0010] Furthermore, one end of the locking rod close to the first elastic member is fixedly connected to a limiting ring, the diameter of the limiting ring is larger than the diameter of the sliding hole, and the limiting ring is used to prevent the locking rod from being separated from the accommodating cavity.
[0011] Furthermore, a limit assembly is provided in the plug-in slot, and the limit assembly is used to limit the locking rod from sliding out before the plug-in block is inserted into the plug-in slot. The limit assembly includes a limit block and a second elastic member, and the limit block and the second elastic member are both located in the plug-in slot, the limit block is slidably connected to the plug-in slot, the second elastic member is located between the limit block and the bottom wall of the plug-in slot, and the two ends of the second elastic member are fixedly connected to the limit block and the plug-in slot respectively. When the plug-in block is not inserted into the plug-in slot, the second elastic member is used to push the limit block to be located at the sliding hole, and the limit block is used to prevent the locking rod from sliding out.
[0012] Furthermore, a sealing assembly is provided between the upper overlapping part and the lower overlapping part, and the sealing assembly includes a sealing airbag, an air supply pipe and an inflation device. The lower overlapping part is provided with a plurality of grooves, and a sealing airbag is provided in each groove. The inflation device is provided in the lower overlapping part, and the air supply pipe is provided between the inflation device and the sealing airbag. The inflation device is used to transport gas to the sealing airbag through the air supply pipe.
[0013] Furthermore, the inflation device includes a gas cylinder and a control valve. The gas cylinder is arranged in the lower stacking part. Compressed gas is arranged in the gas cylinder. The gas cylinder is connected to the gas pipe through the control valve. The control valve is used to control the gas cylinder to inflate gas into the gas pipe.
[0014] Furthermore, the control valve includes a valve body and a trigger device. An air flow channel is arranged in the valve body. The air flow channel includes an air inlet and an air outlet. The air inlet is fixedly connected to the gas cylinder. A sealing film is arranged at the bottle mouth of the gas cylinder. The sealing film is used to seal the gas cylinder. The air outlet is fixedly connected to the gas pipe. The trigger device is fixedly connected to the valve body. The trigger device is arranged on the side of the limit block away from the locking rod. The trigger device is used to open the gas cylinder.
[0015] Furthermore, the trigger device includes a tube body and a striker, the tube body is fixedly connected to the valve body, the tube body is located on the side of the limit block away from the locking rod, the striker is arranged opposite to the sealing film, the striker is located in the tube body, the striker is slidably connected to the tube body, an strike hole is opened on the valve body, the tip of the striker is located in the strike hole, the striker is slidably connected to the strike hole, one end of the locking rod contacts the striker when passing through the locking hole, and the locking rod is used to push the striker to pierce the sealing film.
[0016] Furthermore, a strike block and a third elastic member are also provided in the tube body, the strike block is fixedly connected to the striker, the strike block is slidably connected to the tube body, the third elastic member is sleeved on the outside of the striker, and both ends of the third elastic member are fixedly connected to the valve body and the strike block respectively.
[0017] Furthermore, a sealing ring is provided on the outer side of the impact block, and the sealing ring is used to seal the gap between the impact block and the tube body.
[0018] In summary, this application has the following technical effects:
[0019] 1. By providing an upper overlapped portion and a lower overlapped portion, and providing a plug-in positioning component between the upper overlapped portion and the lower overlapped portion, the plug-in positioning component can be used to avoid splicing deviation when two adjacent steel truss floor decks are spliced, and a locking component is provided to fix the plug-in block in the plug-in groove, and then the locking component is used to start the sealing component to seal the gap between the upper overlapped portion and the lower overlapped portion, so that the two adjacent steel truss floor decks are seamlessly spliced, so as to achieve the purpose of reducing the gap when the steel truss floor decks are spliced, avoid mortar leakage during concrete pouring, and avoid the decrease of concrete strength;
[0020] 2. By setting up a sealing assembly, after the upper and lower stacking parts are fixed, the sealing airbag in the sealing assembly is used to seal the gap between the upper and lower stacking parts, forming a multi-layer barrier to further reduce the gap between the upper and lower stacking parts, so that the upper and lower stacking parts are sealed;
[0021] 3. By setting up a trigger device and designing the locking rod to pass through the plug-in block and abut against the impact block, the plug-in block is first locked in the plug-in slot before contacting the trigger device, so that the locking rod activates the trigger device to inflate the sealing airbag, avoiding premature inflation of the sealing device and failure to achieve an effective sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of the steel bar truss floor decking splicing of the present application;
[0023] Figure 2 This is a structural schematic diagram of an assembled steel truss floor deck in the present application;
[0024] Figure 3 It is a structural schematic diagram of the lower overlapped portion when the plug-in block of the present application is not inserted into the plug-in slot;
[0025] Figure 4 It is a structural schematic diagram of the abutment position of the upper overlapping part and the lower overlapping part when the plug-in block of the present application is inserted into the plug-in slot;
[0026] Figure 5 It is a schematic diagram of the structure of the sealing assembly during gas transmission in this application.
[0027] In the figure, 1, bottom plate; 2, steel truss; 3, upper overlapping part; 4, lower overlapping part; 41, accommodating chamber; 5, plug-in positioning assembly; 51, plug-in slot; 52, plug-in block; 521, locking hole; 6, locking assembly; 61, locking rod; 62, first elastic member; 63, limiting ring; 7, limiting assembly; 71, limiting block; 72, second elastic member; 8, sealing assembly; 81, sealing airbag; 82, gas pipe; 83, inflating device; 831, gas cylinder; 832, valve body; 9, sealing membrane; 10, trigger device; 101, tube body; 102, firing pin; 103, impact block; 104, third elastic member. DETAILED DESCRIPTION
[0028] The present application is further described in detail below in conjunction with the accompanying drawings.
[0029] Reference Figure 1 and Figure 2The present embodiment provides an assembled steel truss floor deck, a bottom plate 1 and a steel truss 2, a plurality of steel trusses 2 are provided, and the plurality of steel trusses 2 are evenly distributed on the bottom plate 1, and each steel truss 2 is fixedly connected to the bottom plate 1, and the bottom plate 1 is provided with a splicing assembly, and the splicing assembly is used to seamlessly splice two adjacent bottom plates 1; the splicing assembly includes an upper overlap portion 3 and a lower overlap portion 4, and the upper overlap portion 3 and the lower overlap portion 4 are symmetrically arranged along the length direction of the bottom plate 1, and the upper overlap portion 3 and the lower overlap portion 4 are both fixedly connected to the bottom plate 1. In this embodiment, the upper overlap portion 3 and the lower overlap portion 4 are They are all fixedly connected with steel bars, which are inserted into the steel mesh before the bottom plate 1 is cast, so that the bottom plate 1 is directly fixedly connected to the upper overlapping part 3 and the lower overlapping part 4 when casting. When two adjacent bottom plates 1 are spliced, the upper overlapping part 3 and the lower overlapping part 4 are seamlessly abutted. A plug-in positioning component 5 is provided between the upper overlapping part 3 and the lower overlapping part 4. The plug-in positioning component 5 is used to fix the upper overlapping part 3 and the lower overlapping part 4. A sealing component 8 is also provided between the upper overlapping part 3 and the lower overlapping part 4. After the plug-in positioning component 5 fixes the upper overlapping part 3 and the lower overlapping part 4, the sealing component 8 is activated to seal between the upper overlapping part 3 and the lower overlapping part 4.
[0030] Reference Figure 2 and Figure 3 The plug-in positioning assembly 5 includes a plug-in block 52 and a plug-in slot 51. The plug-in block 52 is fixedly connected to the upper stacking part 3. The plug-in slot 51 is provided in the lower stacking part 4. The plug-in block 52 is plugged into and matched with the plug-in slot 51. A locking assembly 6 is provided in the plug-in slot 51. When the upper stacking part 3 and the lower stacking part 4 are abutted, the locking assembly 6 is used to fix the plug-in block 52 in the plug-in slot 51.
[0031] Reference Figure 3 and Figure 4 The locking assembly 6 includes a locking rod 61 and a first elastic member 62. The side wall of the plug-in slot 51 is provided with an accommodating cavity 41. The locking rod 61 and the first elastic member 62 are both located in the accommodating cavity 41. The locking rod 61 is slidably connected to the accommodating cavity 41. The side wall of the accommodating cavity 41 is provided with a sliding hole. One end of the locking rod 61 is located in the sliding hole. The locking rod 61 is slidably connected to the sliding hole. The first elastic member 62 is located at the end of the locking rod 61 away from the sliding hole. In this embodiment, the first elastic member 62 is a spring. The first elastic member 6 The two ends of 2 are fixedly connected with the locking rod 61 and the side wall of the accommodating chamber 41 respectively, and a locking hole 521 is opened on the plug-in block 52. When the upper overlapping part 3 and the lower overlapping part 4 are abutted, the locking hole 521 is communicated with the sliding hole, and the locking rod 61 is inserted into the locking hole 521. The locking rod 61 is slidably connected with the locking hole 521. One end of the locking rod 61 close to the first elastic member 62 is fixedly connected with a limiting ring 63. The diameter of the limiting ring 63 is larger than the diameter of the sliding hole. The limiting ring 63 is used to prevent the locking rod 61 from being separated from the accommodating chamber 41.
[0032] Reference Figure 3 and Figure 4A limit assembly 7 is provided in the plug-in slot 51, and the limit assembly 7 is used to limit the locking rod 61 from sliding out before the plug-in block 52 is inserted into the plug-in slot 51. The limit assembly 7 includes a limit block 71 and a second elastic member 72, and the limit block 71 and the second elastic member 72 are both located in the plug-in slot 51, and the limit block 71 is slidably connected to the plug-in slot 51. In this embodiment, the second elastic member 72 is a spring, and the second elastic member 72 is located between the limit block 71 and the bottom wall of the plug-in slot 51, and the two ends of the second elastic member 72 are fixedly connected to the limit block 71 and the plug-in slot 51 respectively. When the plug-in block 52 is not inserted into the plug-in slot 51, the second elastic member 72 is used to push the limit block 71 to be located at the sliding hole, and the limit block 71 is used to prevent the locking rod 61 from sliding out directly.
[0033] Reference Figure 3-Figure 5 The sealing assembly 8 includes a sealing airbag 81, an air pipe 82 and an inflation device 83. The lower stacking portion 4 is provided with a plurality of grooves, each of which is provided with a sealing airbag 81. In the present embodiment, two sealing airbags 81 are provided, and the two sealing airbags 81 are arranged in parallel along the length direction of the bottom plate 1. The two sealing airbags 81 are respectively arranged on both sides of the plug-in slot 51. The inflation device 83 is arranged in the lower stacking portion 4, and the air pipe 82 is arranged between the inflation device 83 and the sealing airbag 81. The inflation device 83 is used to transport gas to the sealing airbag 81 through the air pipe 82. The inflation device 83 includes a gas cylinder 831 and a control valve. The gas cylinder 831 is arranged in the lower stacking portion 4. Compressed gas is arranged in the gas cylinder 831. The gas cylinder 831 is connected to the air pipe 82 through the control valve. The control valve is used to control the gas cylinder 831 to inflate the gas into the air pipe 82.
[0034] Reference Figure 3-Figure 4 The control valve includes a valve body 832 and a trigger device 10. An air flow channel is provided in the valve body 832. The air flow channel includes an air inlet and an air outlet. The air inlet is fixedly connected to the gas cylinder 831. A sealing film 9 is provided at the bottle mouth of the gas cylinder 831. The sealing film 9 is used to seal the gas cylinder 831. The air outlet is fixedly connected to the gas delivery pipe 82. The trigger device 10 is fixedly connected to the valve body 832. The trigger device 10 is provided on the side of the limit block 71 away from the locking rod 61. The trigger device 10 is used to open the gas cylinder 831. The trigger device 10 includes a tube body 101 and The striker 102 and the tube body 101 are fixedly connected with the valve body 832, the tube body 101 is located on the side of the limit block 71 away from the locking rod 61, the striker 102 is arranged opposite to the sealing film 9, the striker 102 is located in the tube body 101, the striker 102 is slidably connected with the tube body 101, a strike hole is opened on the valve body 832, the tip of the striker 102 is located in the strike hole, the striker 102 is slidably connected with the strike hole, one end of the locking rod 61 contacts with the striker 102 when passing through the locking hole 521, and the locking rod 61 is used to push the striker 102 to pierce the sealing film 9.
[0035] Reference Figure 3-Figure 4, a striking block 103 and a third elastic member 104 are also provided in the tube body 101, the striking block 103 is fixedly connected to the striker 102, and the striking block 103 is slidably connected to the tube body 101. In this embodiment, the third elastic member 104 is a spring, and the third elastic member 104 is sleeved on the outside of the striker 102, and the two ends of the third elastic member 104 are respectively fixedly connected to the valve body 832 and the striking block 103; a sealing ring is provided on the outside of the striking block 103, and the sealing ring is used to seal the gap between the striking block 103 and the tube body 101. By providing the sealing ring, the gas in the gas cylinder 831 is prevented from entering the tube body 101 through the striking hole, and then gas escape occurs to reduce the sealing effect.
[0036] The implementation principle of the assembled steel truss floor deck in the embodiment of the present application is as follows: when installing the steel truss floor deck, firstly, one steel truss floor deck is erected between two frame beams or shear walls, and then another steel truss floor deck is moved close to the erected steel truss floor deck, so that the upper stacking part 3 is close to the lower stacking part 4, and the plug-in block 52 is plugged into the plug-in groove 51, and the positioning of the plug-in block 52 and the plug-in groove 51 is used to avoid the two steel truss floors from being locked. When the rib truss floor deck is installed, misalignment occurs. As the plug-in block 52 is plugged into the plug-in slot 51, after the plug-in block 52 abuts against the limit block 71, as the plug-in block 52 is gradually inserted into the plug-in slot 51, the plug-in block 52 pushes the limit block 71 to slide in the plug-in slot 51, and the limit block 71 compresses the second elastic member 72, so that the plug-in block 52 replaces the limit block 71 to continue to limit the sliding out of the locking rod 61; when only the upper overlapped portion 3 abuts against the lower overlapped portion 4, the locking hole 5 21 is connected with the sliding hole and the tube body 101. At this time, the first elastic member 62 pushes the locking rod 61 to slide, so that one end of the locking rod 61 slides and inserts into the locking hole 521, and then slides into the tube body 101 to abut against the impact block 103, so that the impact block 103 drives the striker 102 to slide in the tube body 101, so that the tip of the striker 102 passes through the impact hole to penetrate the sealing membrane 9 located in the valve body 832, and the compressed gas in the gas cylinder 831 is released and enters the gas supply pipe 82 through the valve body 832, and then enters the sealing airbag 81 through the gas supply pipe 82, so that the sealing airbag 81 expands and pops out from the groove to abut against the upper overlapping part 3, thereby sealing the gap after the upper overlapping part 3 and the lower overlapping part 4 are spliced, thereby realizing the sealing between the upper overlapping part 3 and the lower overlapping part 4, achieving the purpose of reducing the gap when the steel truss floor deck is spliced, avoiding mortar leakage during concrete pouring, and avoiding the reduction of concrete strength.
[0037] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.
Claims
1. An assembled steel truss floor deck, comprising a base plate (1) and a steel truss (2), wherein a plurality of steel trusses (2) are provided, the plurality of steel trusses (2) are evenly distributed on the base plate (1), and each steel truss (2) is fixedly connected to the base plate (1). Features: The base plate (1) is provided with a splicing assembly, and the splicing assembly is used to seamlessly splice two adjacent base plates (1); the splicing assembly comprises an upper overlapping portion (3) and a lower overlapping portion (4), and the upper overlapping portion (3) and the lower overlapping portion (4) are symmetrically arranged along the length direction of the base plate (1), and the upper overlapping portion (3) and the lower overlapping portion (4) are both fixedly connected to the base plate (1). When the two adjacent base plates (1) are spliced, the upper overlapping portion (3) and the lower overlapping portion (4) are seamlessly abutted, and a plug-in positioning assembly (5) is arranged between the upper overlapping portion (3) and the lower overlapping portion (4); The plug-in positioning assembly (5) comprises a plug-in block (52) and a plug-in slot (51); the plug-in block (52) is fixedly connected to the upper stacking part (3); the plug-in slot (51) is arranged in the lower stacking part (4); the plug-in block (52) and the plug-in slot (51) are plugged together; a locking assembly (6) is arranged in the plug-in slot (51); when the upper stacking part (3) and the lower stacking part (4) are in contact, the locking assembly (6) is used to fix the plug-in block (52) in the plug-in slot (51); a sealing assembly (8) is also arranged between the upper stacking part (3) and the lower stacking part (4); after the locking assembly (6) locks the plug-in block (52), the sealing assembly (8) is triggered to seal the upper stacking part (3) and the lower stacking part (4); The locking assembly (6) comprises a locking rod (61) and a first elastic member (62). A receiving cavity (41) is provided on the side wall of the insertion slot (51). The locking rod (61) and the first elastic member (62) are both located in the receiving cavity (41). The locking rod (61) is slidably connected to the receiving cavity (41). A sliding hole is provided on the side wall of the receiving cavity (41). One end of the locking rod (61) is located in the sliding hole. The locking rod (61) is slidably connected to the sliding hole. The first elastic member (62) is The first elastic member (62) is located at an end of the locking rod (61) away from the sliding hole, and the two ends of the first elastic member (62) are respectively fixedly connected to the locking rod (61) and the side wall of the accommodating cavity (41). The plug-in block (52) is provided with a locking hole (521). When the upper overlapping portion (3) and the lower overlapping portion (4) are in contact, the locking hole (521) is communicated with the sliding hole, and the locking rod (61) is inserted into the locking hole (521), and the locking rod (61) is slidably connected with the locking hole (521). A limit assembly (7) is arranged in the plug-in slot (51), and the limit assembly (7) is used to limit the locking rod (61) from sliding out before the plug-in block (52) is inserted into the plug-in slot (51). The limit assembly (7) comprises a limit block (71) and a second elastic member (72). The limit block (71) and the second elastic member (72) are both located in the plug-in slot (51), the limit block (71) is slidably connected to the plug-in slot (51), the second elastic member (72) is located between the limit block (71) and the bottom wall of the plug-in slot (51), and the two ends of the second elastic member (72) are respectively fixedly connected to the limit block (71) and the plug-in slot (51). When the plug-in block (52) is not inserted into the plug-in slot (51), the second elastic member (72) is used to push the limit block (71) to be located at the sliding hole, and the limit block (71) is used to prevent the locking rod (61) from sliding out. The sealing assembly (8) comprises a sealing airbag (81), an air delivery pipe (82) and an inflating device (83); the lower stacking portion (4) is provided with a plurality of grooves, each groove being provided with a sealing airbag (81); the inflating device (83) is provided in the lower stacking portion (4); the air delivery pipe (82) is provided between the inflating device (83) and the sealing airbag (81); the inflating device (83) is used to deliver gas to the sealing airbag (81) through the air delivery pipe (82); The inflation device (83) comprises a gas cylinder (831) and a control valve. The gas cylinder (831) is arranged in the lower stacking part (4). Compressed gas is arranged in the gas cylinder (831). The gas cylinder (831) is connected to the gas delivery pipe (82) via the control valve. The control valve is used to control the gas cylinder (831) to inflate gas into the gas delivery pipe (82). The control valve comprises a valve body (832) and a trigger device (10). An air flow channel is arranged in the valve body (832). The air flow channel includes a The gas cylinder (831) comprises an air inlet and an air outlet, wherein the air inlet is fixedly connected to the gas cylinder (831), a sealing film (9) is arranged at the mouth of the gas cylinder (831), and the sealing film (9) is used to seal the gas cylinder (831), the air outlet is fixedly connected to the gas delivery pipe (82), the trigger device (10) is fixedly connected to the valve body (832), the trigger device (10) is arranged on a side of the limit block (71) away from the locking rod (61), and the trigger device (10) is used to open the gas cylinder (831); The trigger device (10) comprises a tube body (101) and a striker (102), wherein the tube body (101) is fixedly connected to the valve body (832), the tube body (101) is located on a side of the limit block (71) away from the locking rod (61), the striker (102) is arranged opposite to the sealing film (9), the striker (102) is located in the tube body (101), the striker (102) is slidably connected to the tube body (101), a strike hole is opened on the valve body (832), the tip of the striker (102) is located in the strike hole, the striker (102) is slidably connected to the strike hole, one end of the locking rod (61) contacts the striker (102) when passing through the locking hole (521), and the locking rod (61) is used to push the striker (102) to puncture the sealing film (9).
2. The assembled steel truss floor deck according to claim 1, Features: One end of the locking rod (61) close to the first elastic member (62) is fixedly connected to a limiting ring (63); the diameter of the limiting ring (63) is larger than the diameter of the sliding hole; the limiting ring (63) is used to prevent the locking rod (61) from separating from the accommodating cavity (41).
3. The assembled steel truss floor deck according to claim 1, Features: The tube body (101) is also provided with a striking block (103) and a third elastic member (104); the striking block (103) is fixedly connected to the striking pin (102); the striking block (103) is slidably connected to the tube body (101); the third elastic member (104) is sleeved on the outside of the striking pin (102); and two ends of the third elastic member (104) are respectively fixedly connected to the valve body (832) and the striking block (103).
4. The assembled steel truss floor deck according to claim 3, Features: A sealing ring is arranged on the outer side of the impact block (103), and the sealing ring is used to seal the gap between the impact block (103) and the tube body (101).