Portable demouldable steel bar truss floor support plate

Abstract

The utility model discloses a portable demouldable steel bar truss floor support plate, including bottom form, be provided with fixed establishment on the bottom form, the fixed establishment includes abdominal rib, upper chord steel bar, lower chord steel bar, jack, press hook, quick -witted card mechanism and quick -release mechanism, the quick -witted card mechanism includes the joint of card, fixed cover, joint piece and card slot, and the joint of card is fixed in the bottom end of press hook, and the fixed cover is inserted in the outer wall of the joint of card, and the joint piece is provided with multiple groups distribution in the inner wall of fixed cover, and the card slot is provided with multiple groups distribution in the outer wall of the joint of card, and the quick -witted card mechanism adopts the cooperation structure of elastic joint piece and card slot, and the joint is fixed when press hook inserts, and the reliable connection of steel bar truss and bottom form is ensured, and the quick -release mechanism drives the opening and closing state of joint piece through the sliding sleeve of push board, and the one -key unlocking function is realized in cooperation rotary rotating cover, and the demoulding efficiency is improved greatly.

Description

Technical Field

[0001] This utility model relates to the technical field, and more specifically, to a portable, demoldable steel truss floor deck. Background Technology

[0002] In the field of building construction, the rapid assembly and disassembly of steel truss floor decks is of great significance to improving construction efficiency. In traditional processes, the bottom formwork and steel truss are fixed by screw-through connection. Although this rigid connection method can ensure structural stability, it requires drilling and tightening operations point by point. When the formwork is reused, there are prominent problems such as cumbersome disassembly procedures and long time consumption. Especially in the construction scenario of composite floor slabs that require frequent formwork disassembly, the existing technology is difficult to meet the two core requirements of connection reliability and operation convenience.

[0003] From a structural perspective, the existing fixing method has obvious technological limitations. The steel truss uses fastener slots to achieve lateral restraint of the lower chord steel bars, while the fasteners and the bottom formwork are fixed by screws. This double restraint structure means that when dismantling the formwork, all screw connections must be released first, and then the fasteners and truss must be separated. This not only involves many operation steps and strong tool dependence, but also makes it easy to damage the formwork due to repeated disassembly and assembly. More importantly, the screw fixing method cannot achieve synchronous and rapid demolding of the steel truss and the bottom formwork, which restricts the application efficiency of precast components in industrialized construction. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a portable demolded steel truss floor deck to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a portable demolded steel truss floor deck, comprising a bottom template, on which a fixing mechanism is provided. The fixing mechanism includes web reinforcement, upper chord reinforcement, lower chord reinforcement, insertion holes, pressure hooks, a quick-locking mechanism, and a quick-release mechanism. The web reinforcement is positioned above the bottom template, the upper chord reinforcement is fixed to the top of the web reinforcement, and the lower chord reinforcement is fixed to both sides of the bottom end of the web reinforcement. Multiple sets of insertion holes are provided on the bottom template, and the pressure hooks press against the top surface of the lower chord reinforcement and are inserted into the insertion holes. The quick-locking mechanism includes a snap-fit ​​sleeve, a fixing sleeve, snap-fit ​​pieces, and snap grooves. The snap-fit ​​sleeve is fixed to the bottom end of the pressure hook, the fixing sleeve is inserted into the outer wall of the snap-fit ​​sleeve, multiple sets of snap-fit ​​pieces are distributed on the inner wall of the fixing sleeve, and multiple sets of snap grooves are distributed on the outer wall of the snap-fit ​​sleeve. The quick-release mechanism includes a sliding groove, a sliding sleeve, and a push plate. Multiple sets of sliding grooves are distributed on the outer wall of the fixing sleeve, the sliding sleeve slides within the multiple sets of sliding grooves, and multiple sets of push plates are fixed to the inner side of the sliding sleeve.

[0008] The present invention is further configured such that the outer wall of the snap-fit ​​sleeve is provided with a positioning groove, and multiple sets of positioning grooves are provided on the outer wall of the snap-fit ​​sleeve; the inner wall of the fixed sleeve is fixedly provided with a positioning plate, and multiple sets of positioning plates are provided on the inner wall of the fixed sleeve, so as to realize circumferential positioning and angular alignment during rapid assembly.

[0009] The present invention is further configured such that all of the multiple sets of snap-fit ​​pieces are elastic pieces, so that the snap-fit ​​pieces have radial deformation capability and take into account both flexibility and stability.

[0010] The present invention is further configured such that a top plate is fixedly provided inside the fixing sleeve, and a compression spring is connected inside the snap-fit ​​sleeve to limit the maximum displacement of the snap-fit ​​sleeve and provide axial buffer force.

[0011] The present invention is further configured such that the top ends of the multiple sets of push plates are all arc-shaped to reduce contact friction and avoid scratching the surface of the snap-fit ​​piece.

[0012] The present invention is further configured such that a connecting sleeve is fixedly provided on the outer side of the sliding sleeve, a limiting block is fixedly provided at the bottom end of each connecting rod, a rotating sleeve is rotatably provided on the outer wall of the fixed sleeve, and a limiting groove is provided on the rotating sleeve, forming a linkage locking and double insurance mechanism.

[0013] The present invention is further configured such that each of the multiple sets of limiting grooves has an unlocking groove at one end, which facilitates quick release of the lock by rotating the rotating sleeve.

[0014] The present invention is further configured such that a push spring is fixedly connected to the top surface of the rotating sleeve, and a thrust bearing is connected to the top end of the push spring to maintain the stability of the rotating sleeve position and reduce rotational friction.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a portable, demoldable steel truss floor deck, which has the following advantages:

[0017] 1. The quick-clamping mechanism adopts a structure that combines elastic clamping pieces and clamping slots. When the clamping hook is inserted, it automatically completes the clamping and fixing, ensuring a reliable connection between the steel truss and the bottom formwork.

[0018] 2. The quick-release mechanism uses a sliding sleeve to drive the push plate to control the opening and closing state of the locking piece, and works with a rotating sleeve to achieve a one-click unlocking function, greatly improving the efficiency of mold disassembly.

[0019] 3. The linkage design of the connecting sleeve and the limiting groove forms a dual locking mechanism, ensuring structural stability during construction and facilitating quick release during disassembly. The combination of the push spring and the thrust bearing ensures smooth operation of the rotating sleeve while maintaining sufficient preload to prevent accidental loosening. The entire system achieves automatic separation through the elastic reset function of the compression spring. The coordinated work of all components makes the floor decking securely installed and easy to disassemble, effectively improving construction efficiency and reducing labor intensity. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a portable, demoldable steel truss floor deck according to the present invention;

[0021] Figure 2 This is a schematic diagram of the disassembly structure of the midsole template of this utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of the fast-delivery truck mechanism of this utility model;

[0023] Figure 4 This is a cross-sectional view of the snap-fit ​​sleeve in this utility model;

[0024] Figure 5 This is a cross-sectional view of the fixing sleeve in this utility model.

[0025] In the diagram: 1. Bottom formwork; 2. Abdomen reinforcement; 3. Top chord reinforcement; 4. Bottom chord reinforcement; 5. Insertion hole; 6. Press hook; 7. Snap-fit ​​sleeve; 8. Fixing sleeve; 9. Snap-fit ​​piece; 10. Snap groove; 11. Slide groove; 12. Slide sleeve; 13. Push plate; 14. Positioning groove; 15. Positioning plate; 16. Top plate; 17. Compression spring; 18. Connecting sleeve; 19. Connecting rod; 20. Limiting block; 21. Rotating sleeve; 22. Limiting groove; 23. Unlocking groove; 24. Push spring; 25. Thrust bearing. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A portable, demoldable steel truss floor deck includes a bottom formwork 1. A fixing mechanism is provided on the bottom formwork 1, comprising web reinforcement 2, upper chord reinforcement 3, lower chord reinforcement 4, insertion holes 5, hooks 6, a quick-locking mechanism, and a quick-release mechanism. The web reinforcement 2 is positioned above the bottom formwork 1. The upper chord reinforcement 3 is fixed to the top of the web reinforcement 2, and the lower chord reinforcement 4 is fixed to both sides of the bottom end of the web reinforcement 2. Multiple sets of insertion holes 5 are provided on the bottom formwork 1. The hooks 6 press against the top surface of the lower chord reinforcement 4 and are inserted into the insertion holes 5. The quick-release mechanism includes a snap-fit ​​sleeve 7, a fixing sleeve 8, snap-fit ​​pieces 9, and snap-fit ​​grooves 10. The snap-fit ​​sleeve 7 is fixed to the bottom end of the pressure hook 6. The fixing sleeve 8 is inserted into the outer wall of the snap-fit ​​sleeve 7. Multiple sets of snap-fit ​​pieces 9 are distributed on the inner wall of the fixing sleeve 8. Multiple sets of snap-fit ​​grooves 10 are distributed on the outer wall of the snap-fit ​​sleeve 7. The quick-release mechanism includes a sliding groove 11, a sliding sleeve 12, and a push plate 13. Multiple sets of sliding grooves 11 are distributed on the outer wall of the fixing sleeve 8. The sliding sleeve 12 slides within multiple sets of sliding grooves 11. Multiple sets of push plates 13 are fixed to the inner side of the sliding sleeve 12.

[0030] The outer wall of the snap-fit ​​sleeve 7 is provided with a positioning groove 14, and multiple sets of positioning grooves 14 are distributed on the outer wall of the snap-fit ​​sleeve 7. The inner wall of the fixed sleeve 8 is fixed with a positioning plate 15, and multiple sets of positioning plates 15 are distributed on the inner wall of the fixed sleeve 8. Circumferential positioning is achieved through the cooperation of the positioning groove 14 and the positioning plate 15.

[0031] All sets of snap-fit ​​pieces 9 are set as elastic pieces, and the snap-fit ​​function is achieved by utilizing the elastic deformation of the snap-fit ​​pieces 9.

[0032] A top plate 16 is fixedly provided inside the fixed sleeve 8, and a compression spring 17 is connected inside the snap sleeve 7. The top plate 16 restricts displacement, and the compression spring 17 provides a reset force.

[0033] The tops of multiple push plates 13 are all set to be arc-shaped, and the arc design of push plates 13 reduces frictional resistance.

[0034] A connecting sleeve 18 is fixedly provided on the outer side of the sliding sleeve 12. A connecting rod 19 is fixedly provided on the bottom surface of the connecting sleeve 18. Multiple sets of connecting rods 19 are provided, and each of them is fixedly provided with a limiting block 20 at its bottom end. A rotating sleeve 21 is rotatably provided on the outer wall of the fixed sleeve 8. A limiting groove 22 is provided on the rotating sleeve 21. Multiple sets of limiting grooves 22 are provided and distributed on the rotating sleeve 21. The connecting sleeve 18 and the limiting groove 22 constitute a linkage locking mechanism.

[0035] Each of the multiple limiting slots 22 has an unlocking slot 23 at one end, which provides an exit channel for the limiting block 20 to achieve quick unlocking.

[0036] A push spring 24 is fixedly connected to the top surface of the rotating sleeve 21, and a thrust bearing 25 is connected to the top of the push spring 24. The push spring 24 maintains the preload, and the thrust bearing 25 reduces rotational friction.

[0037] In this embodiment, during use, the lower chord steel bar 4 is placed on the top surface of the bottom template 1, the bottom end of the hook 6 is inserted into the insertion hole 5 and its inner wall abuts against the outer wall of the lower chord steel bar 4, the fixing sleeve 8 is inserted into the outer side of the snap-fit ​​sleeve 7, and the outer wall of the snap-fit ​​sleeve 7. At this time, the push spring 24 pushes the connecting sleeve 18 and the sliding sleeve 12 to slide along the sliding groove 11 and drives the push plate 13 to push the multiple sets of snap-fit ​​pieces 9, so that the multiple sets of snap-fit ​​pieces 9 elastically deform to make way for the snap-fit ​​rod. The snap-fit ​​sleeve 7 is inserted into the fixing sleeve 8, and the top plate 16 abuts against the top of the compression spring 17. The end is compressed, pushing the sliding sleeve 12 to squeeze the push spring 24, releasing the multiple sets of push plates 13 from abutting the snap-fit ​​piece 9, and the snap-fit ​​piece 9 resets and engages in the snap-fit ​​groove 10, fixing the snap-fit ​​sleeve 7. At this time, the bottom surface of the fixing sleeve 8 abuts against the bottom surface of the bottom template 1, fixing the pressure hook 6. At this time, multiple sets of connecting rods 19 are inserted into the unlocking groove 23. Rotating the rotating sleeve 21 causes the multiple sets of connecting rods 19 to slide into the limiting groove 22, and the multiple sets of limiting blocks 20 abut against the bottom surface of the rotating sleeve 21 to limit the sliding sleeve 12.

[0038] More specifically, when it is necessary to disassemble the bottom template 1, rotating the rotating sleeve 21 causes multiple sets of connecting rods 19 to slide along the limiting groove 22 into the unlocking groove 23, releasing the contact between multiple sets of limiting blocks 20 and the rotating sleeve 21. The push spring 24 pushes the connecting sleeve 18 to push multiple sets of push plates 13 through the sliding sleeve 12. The multiple sets of push plates 13 push the snap-fit ​​piece 9 out of the snap-fit ​​groove 10. The elastic reset of the compression spring 17 pushes the top plate 16 to drive the fixing sleeve 8 out of the snap-fit ​​sleeve 7, and then the bottom template 1 can be disassembled.

[0039] In summary, during use or operation of the overall equipment: When in use, place the lower chord reinforcing bar 4 on the top surface of the bottom formwork 1, insert the bottom end of the pressure hook 6 into the insertion hole 5, ensuring its inner wall abuts against the outer wall of the lower chord reinforcing bar 4, insert the fixing sleeve 8 onto the outside of the snap-fit ​​sleeve 7, and press the outer wall of the snap-fit ​​sleeve 7. At this time, the push spring 24 pushes the connecting sleeve 18 and the sliding sleeve 12 to slide along the sliding groove 11, driving the push plate 13 to push multiple sets of snap-fit ​​pieces 9, causing the multiple sets of snap-fit ​​pieces 9 to elastically deform and make way for the snap-fit ​​rod. The snap-fit ​​sleeve 7 is inserted into the fixing sleeve 8, and the top plate 16 abuts against the compression... The top of the spring 17 is compressed, pushing the sliding sleeve 12 to squeeze the push spring 24, releasing the contact of the multiple sets of push plates 13 against the snap-fit ​​piece 9. The snap-fit ​​piece 9 is reset and engaged in the slot 10, fixing the snap-fit ​​sleeve 7. At this time, the bottom surface of the fixing sleeve 8 abuts against the bottom surface of the bottom template 1, fixing the pressure hook 6. At this time, the multiple sets of connecting rods 19 are inserted into the unlocking slot 23. Rotating the rotating sleeve 21 causes the multiple sets of connecting rods 19 to slide into the limiting slot 22. The multiple sets of limiting blocks 20 abut against the bottom of the rotating sleeve 21 to limit the sliding sleeve 12.

[0040] When it is necessary to disassemble the bottom template 1, rotating the rotating sleeve 21 causes multiple sets of connecting rods 19 to slide along the limiting groove 22 into the unlocking groove 23, releasing the contact between multiple sets of limiting blocks 20 and the rotating sleeve 21. The push spring 24 pushes the connecting sleeve 18 to push multiple sets of push plates 13 through the sliding sleeve 12. The multiple sets of push plates 13 push the snap-fit ​​piece 9 out of the snap-fit ​​groove 10. The elastic reset of the compression spring 17 pushes the top plate 16 to drive the fixing sleeve 8 out of the snap-fit ​​sleeve 7. Then the bottom template 1 can be disassembled.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A portable, demoldable steel truss floor deck, comprising a bottom formwork (1), characterized in that: The bottom template (1) is provided with a fixing mechanism, which includes a belly steel bar (2), an upper chord steel bar (3), a lower chord steel bar (4), a socket (5), a pressure hook (6), a quick-locking mechanism, and a quick-release mechanism. The belly steel bar (2) is set above the bottom template (1), the upper chord steel bar (3) is fixed to the top of the belly steel bar (2), and the lower chord steel bar (4) is fixed to both sides of the bottom end of the belly steel bar (2). Multiple sets of sockets (5) are provided on the bottom template (1). The pressure hook (6) presses against the top surface of the lower chord steel bar (4) and is inserted into the socket (5). The quick-locking mechanism includes a snap-fit ​​sleeve (7). The quick-release mechanism includes a fixed sleeve (8), a snap-fit ​​piece (9), and a slot (10). The snap-fit ​​sleeve (7) is fixed to the bottom end of the hook (6). The fixed sleeve (8) is inserted into the outer wall of the snap-fit ​​sleeve (7). Multiple sets of snap-fit ​​pieces (9) are distributed on the inner wall of the fixed sleeve (8). Multiple sets of slots (10) are distributed on the outer wall of the snap-fit ​​sleeve (7). The quick-release mechanism includes a sliding groove (11), a sliding sleeve (12), and a push plate (13). Multiple sets of sliding grooves (11) are distributed on the outer wall of the fixed sleeve (8). The sliding sleeve (12) slides in multiple sets of sliding grooves (11). Multiple sets of push plates (13) are fixed on the inner side of the sliding sleeve (12).

2. The portable, demoldable steel truss floor decking according to claim 1, characterized in that: The outer wall of the snap-fit ​​sleeve (7) is provided with a positioning groove (14), and multiple sets of the positioning groove (14) are distributed on the outer wall of the snap-fit ​​sleeve (7). The inner wall of the fixing sleeve (8) is fixed with a positioning plate (15), and multiple sets of the positioning plate (15) are distributed on the inner wall of the fixing sleeve (8).

3. A portable, demoldable steel truss floor decking according to claim 2, characterized in that: All of the aforementioned snap-fit ​​pieces (9) are configured as elastic pieces.

4. A portable, demoldable steel truss floor decking according to claim 3, characterized in that: A top plate (16) is fixed inside the fixed sleeve (8), and a compression spring (17) is connected inside the snap sleeve (7).

5. A portable, demoldable steel truss floor decking according to claim 4, characterized in that: The top of each of the multiple push plates (13) is set to be arc-shaped.

6. A portable, demoldable steel truss floor decking according to claim 5, characterized in that: A connecting sleeve (18) is fixedly provided on the outer side of the sliding sleeve (12). A connecting rod (19) is fixedly provided on the bottom surface of the connecting sleeve (18). Multiple sets of the connecting rod (19) are provided, and each of them is fixedly provided with a limiting block (20) at its bottom end. A rotating sleeve (21) is rotatably provided on the outer wall of the fixed sleeve (8). A limiting groove (22) is provided on the rotating sleeve (21). Multiple sets of the limiting groove (22) are provided and distributed on the rotating sleeve (21).

7. A portable, demoldable steel truss floor decking according to claim 6, characterized in that: multiple sets Each of the limiting slots (22) has an unlocking slot (23) at one end.

8. A portable, demoldable steel truss floor decking according to claim 7, characterized in that: The top surface of the rotating sleeve (21) is fixedly connected to a push spring (24), and the top end of the push spring (24) is connected to a thrust bearing (25).

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