Prefabricated composite floor cast-in-place layer mechanical pre-burying structure

Abstract

The utility model belongs to the technical field of fabricated building, concretely relates to cast-in-place layer machine -building pre -buried structure of fabricated composite floor, including composite floor body surface pouring connection longitudinal reinforcement, composite floor body surface pouring connection horizontal reinforcement, composite floor body top surface pouring connection top ring, composite floor body top surface fixedly connected mounting seat, mounting seat inner wall surface welds nut, nut surface thread connection knurled bolt, knurled bolt surface thread connection in reserved line box surface, reserved line box surface sliding sleeve joint in nut surface. The utility model, through the cooperation of mounting seat and knurled bolt pre -buried on the composite floor body, it is convenient to fix reserved line box and reserved pipeline, so as to be convenient for subsequent directly installing electromechanical equipment on the formed floor, and further improve the efficiency of assembly construction, can also avoid damaging the floor structure.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building technology, specifically relating to the electromechanical pre-embedded structure of cast-in-place layer of prefabricated composite floor slab. Background Technology

[0002] The cast-in-place layer of prefabricated composite floor slabs is the on-site construction part of the "prefabricated + cast-in-place" combined structure of prefabricated composite floor slabs. It refers to the upper structure formed by tying steel bars and pouring concrete on site after the prefabricated composite floor slab base slab with truss bars or reserved anchor bars and a rough surface is hoisted into place. Its thickness is usually determined according to the total design thickness of the floor slab, generally 50-100mm. Together with the prefabricated base slab, it forms a complete composite floor slab load-bearing system. When installing electromechanical equipment, the existing prefabricated composite floor slabs require secondary construction such as grooving and drilling on the already formed floor slabs, which increases the construction process and time, thus affecting the overall construction progress. Furthermore, the later construction can easily damage the floor slab structure and affect structural safety. Utility Model Content

[0003] The purpose of this utility model is to provide a pre-embedded electromechanical structure for cast-in-place layers of prefabricated composite floor slabs. This aims to solve the problem that in the existing technology, when installing electromechanical equipment in cast-in-place layers of prefabricated composite floor slabs, secondary construction such as slotting and drilling is required on the already formed floor slab, which increases the construction process and time, thus affecting the overall construction progress. Furthermore, the later construction is prone to damage to the floor slab structure, affecting structural safety.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated composite floor slab cast-in-place electromechanical embedded structure, comprising a composite floor slab body, longitudinal reinforcing bars cast and connected to the surface of the composite floor slab body, transverse reinforcing bars cast and connected to the surface of the composite floor slab body, a top ring cast and connected to the top surface of the composite floor slab body, a mounting base fixedly connected to the top surface of the composite floor slab body, a nut welded to the inner wall surface of the mounting base, a knurled bolt threadedly connected to the surface of the nut, a knurled bolt threadedly connected to the surface of a reserved junction box, the surface of the reserved junction box slidably fitted onto the surface of the nut, connectors symmetrically connected to the upper surface of the reserved junction box, a collar connected to the other side surface of the connector, a reserved pipe fitted onto the inner wall surface of the collar, an upper hoop ring fitted onto the top surface where the collar and the reserved pipe intersect, a lower hoop ring rotatably connected to one side surface of the upper hoop ring via a rotating shaft, and a bolt assembly threadedly connecting the other transverse end surface of the lower hoop ring to the transverse end of the upper hoop ring.

[0005] As a preferred embodiment of the electromechanical pre-embedded structure of the cast-in-place layer of the prefabricated composite floor slab of this utility model, the two rows of top rings are symmetrically distributed at equal intervals on the top of the composite floor slab body, and the top rings are semi-circular integrated structures.

[0006] As a preferred embodiment of the electromechanical embedded structure of the cast-in-place layer of the prefabricated composite floor slab of this utility model, the mounting base, nut, knurled bolt and reserved junction box form a threaded connection structure.

[0007] As a preferred embodiment of the electromechanical embedded structure of the prefabricated composite floor slab cast-in-place layer of this utility model, the reserved junction box has rectangular grooves on both sides, the shape and size of which are adapted to the nuts, and a circular threaded through groove is opened laterally at the rectangular groove on the surface of the reserved junction box, the shape and size of which are adapted to the knurled bolts.

[0008] As a preferred embodiment of the electromechanical pre-embedded structure of the cast-in-place layer of the prefabricated composite floor slab of this utility model, the connector is a tubular structure, and its inner wall shape and size are adapted to the reserved pipe.

[0009] As a preferred embodiment of the electromechanical pre-embedded structure of the cast-in-place layer of the prefabricated composite floor slab of this utility model, the upper hoop, the rotating shaft and the lower hoop form a rotating connection structure, and a circular threaded groove is longitudinally opened at the intersection of the transverse ends of the upper hoop and the lower hoop, the shape and size of which are adapted to the bolt assembly.

[0010] Compared with the prior art, the beneficial effects of this utility model are: The mounting bases and knurled bolts embedded in the composite floor slab facilitate the fixing of reserved junction boxes and pipes, so that mechanical and electrical equipment can be directly installed on the formed floor slab, thereby improving the efficiency of assembly construction and avoiding damage to the floor slab structure. In addition, the upper and lower clamps can be used to tightly fix the reserved pipes to the junction box connectors, preventing the reserved pipes from shifting, falling off, or deviating in alignment during construction. This ensures the accurate installation position of the electromechanical pipelines, which is conducive to the smooth installation of subsequent electromechanical equipment and the normal operation of the system. It also facilitates the replacement and maintenance of the reserved pipes in the future. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a schematic diagram of the main cross-sectional structure of this utility model; Figure 4 This is an exploded structural diagram of the mounting base and reserved junction box of this utility model; Figure 5 This utility model Figure 4 Enlarged structural diagram of section A.

[0012] In the diagram: 1. Composite floor slab body; 2. Longitudinal reinforcement; 3. Transverse reinforcement; 4. Top ring; 5. Mounting base; 6. Nut; 7. Knurled bolt; 8. Reserved junction box; 9. Connector; 10. Collar; 11. Reserved pipe; 12. Upper hoop; 13. Rotating shaft; 14. Lower hoop; 15. Bolt assembly. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-5 This utility model provides the following technical solution: A prefabricated composite floor slab cast-in-place electromechanical embedded structure, including a composite floor slab body 1, longitudinal reinforcing bars 2 cast and connected to the surface of the composite floor slab body 1, transverse reinforcing bars 3 cast and connected to the surface of the composite floor slab body 1, a top ring 4 cast and connected to the top surface of the composite floor slab body 1, a mounting base 5 fixedly connected to the top surface of the composite floor slab body 1, a nut 6 welded to the inner wall surface of the mounting base 5, a knurled bolt 7 threadedly connected to the surface of the nut 6, and a pre-reserved... On the surface of junction box 8, the reserved junction box 8 is slidably sleeved on the surface of nut 6. Connector 9 is symmetrically connected to the upper surface of reserved junction box 8. The other side surface of connector 9 is connected to collar 10. Reserved pipe 11 is sleeved on the inner wall surface of collar 10. Upper hoop 12 is sleeved on the top surface where collar 10 and reserved pipe 11 intersect. Lower hoop 14 is rotatably connected to one side surface of upper hoop 12 by rotating shaft 13. The other side transverse end surface of lower hoop 14 is threadedly connected to the transverse end of upper hoop 12 by bolt assembly 15.

[0015] Preferably, two rows of top rings 4 are symmetrically distributed at equal intervals on the top of the composite floor slab body 1, and the top rings 4 are semi-circular integrated structures.

[0016] In practical use, during construction, the hook of the hoisting device used in the construction field hooks the top ring 4 that is cast and connected to the top of the composite floor slab body 1, thereby moving the composite floor slab body 1 to the preset placement point of the composite floor slab body 1 on the top of the building.

[0017] Preferably, the mounting base 5, nut 6, knurled bolt 7 and reserved junction box 8 form a threaded connection structure.

[0018] In practical use, adjust the height of the reserved junction box 8, reserve the thickness of the cast-in-place layer, and then insert the knurled bolt 7. Insert it into the threaded hole on the surface of the nut 6 through the threaded hole on the surface of the reserved junction box 8. The anti-slip washer at the end of the bolt presses against the inner wall of the reserved junction box 8 to achieve bidirectional fixation of the reserved junction box 8 in both the upper and lower and left and right directions.

[0019] Preferably, rectangular grooves are provided on both sides of the reserved junction box 8, the shape and size of which are adapted to the nut 6, and a circular threaded through groove is provided horizontally at the rectangular groove on the surface of the reserved junction box 8, the shape and size of which are adapted to the knurled bolt 7.

[0020] In practical use, the rectangular grooves on both sides of the reserved junction box 8 are fitted onto the nuts 6 welded to the inner wall of the mounting base 5, so that the reserved junction box 8 can be precisely aligned and placed into the mounting base 5.

[0021] Preferably, the connector 9 has a tubular structure, and its inner wall shape and size are adapted to the reserved pipe 11.

[0022] In practical use, the inner wall of the connector 9 needs to be smooth to accommodate the insertion of the reserved pipe 11. Insert the reserved pipe 11 into the collar 10 and move it towards the reserved junction box 8 until it touches the inner wall surface of the reserved junction box 8, so as to facilitate precise docking and fixation of the reserved pipe 11 on the connector 9.

[0023] Preferably, the upper hoop 12, the rotating shaft 13 and the lower hoop 14 form a rotary connection structure, and a circular threaded groove is longitudinally opened at the intersection of the transverse ends of the upper hoop 12 and the lower hoop 14, the shape and size of which are adapted to the bolt assembly 15.

[0024] In practical use, the upper hoop 12 is rotated upward so that it is sleeved and closed on the top of the collar 10 through the rotating shaft 13 connected on one side, and the bolt assembly 15 is threadedly connected to the threaded groove at the intersection of the lateral ends of the upper hoop 12 and the lower hoop 14, thereby fixing the connection between the collar 10 and the reserved pipe 11.

[0025] Working principle: During construction, according to the detailed drawings, a mounting base 5 of suitable size and shape is processed, and a pre-fabricated junction box 8 is made, which is mostly made of flame-retardant PVC or metal. Connectors 9 with internal threads are pre-installed on both sides. The inner wall of the connector 9 must be smooth to accommodate the insertion of the pre-fabricated pipe 11. In addition, the upper clamping ring 12 and lower clamping ring 14 are made of ABS plastic or metal, and rubber gaskets are added to their inner walls to enhance sealing. Then, the mounting base 5 is clamped onto the bottom of the steel mold on the surface of the composite floor slab body 1 according to the positioning line. The bottom of the mounting base 5 is welded to the edge of the steel mold to ensure that the mounting base 5 is not loose or offset at the top of the composite floor slab body 1. The pre-fabricated junction box is then installed. The rectangular grooves on both sides of the 8 are fitted onto the nuts 6 welded to the inner wall of the mounting base 5, so that the reserved junction box 8 can be precisely aligned and placed into the mounting base 5. The height of the reserved junction box 8 is adjusted to allow for the thickness of the cast-in-place layer. Then, the knurled bolt 7 is inserted and inserted into the threaded hole on the surface of the nut 6 through the threaded hole on the surface of the reserved junction box 8. The anti-slip washer at the end of the bolt presses against the inner wall of the reserved junction box 8, realizing the bidirectional fixation of the reserved junction box 8 in both directions of "up and down + left and right". The self-locking nature of the knurled bolt 7 and the friction of the anti-slip washer can prevent the reserved junction box 8 from shifting due to vibration during concrete pouring. At the same time, the hand-tightening design reduces the difficulty of factory construction and improves efficiency. According to the detailed drawings, determine the connection direction of the reserved pipe 11, fix the lower hoop 14 to the outer wall of the collar 10 on both sides of the reserved junction box 8, then insert the reserved pipe 11 into the collar 10 and move it towards the reserved junction box 8 until it abuts against the inner wall surface of the reserved junction box 8. Then rotate the upper hoop 12 upward so that it is sleeved and closed on the top of the collar 10 through the rotating shaft 13 connected on one side, and use the bolt assembly 15 to thread it onto the threaded groove at the intersection of the transverse ends of the upper hoop 12 and the lower hoop 14, thereby fixing the connection between the collar 10 and the reserved pipe 11 and preventing the reserved pipe 11 from falling off. Conduct a concealed inspection of the fixed reserved junction box 8 and reserved pipe 11. After the inspection is qualified, pour C30-C40 precast concrete. When vibrating the concrete, avoid the area of ​​the reserved junction box 8 and reserved pipe 11. Use an immersion vibrator and keep the vibration point ≥300mm away from the junction box to prevent the vibration force from causing the reserved junction box 8 to shift or the reserved pipe 11 to break. During construction, the top ring 4, which is cast and connected to the top of the composite floor slab body 1, is hooked by the hook of the hoisting device used in the construction field. This moves the composite floor slab body 1 to the pre-set placement point on the top of the building. Then, the "junction box mark" of the composite floor slab body 1 is marked by a laser line projector to ensure that the position of the reserved junction box 8 is consistent with the design drawings. Then, according to the electromechanical system diagram, the pipelines laid on site are connected to the reserved pipes 11 on the composite floor slab body 1, which facilitates the rapid installation of electromechanical equipment.

[0026] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A prefabricated composite floor slab with cast-in-place electromechanical embedded structure, comprising the composite floor slab body (1), characterized in that: The composite floor slab body (1) is cast with longitudinal reinforcing bars (2) and transverse reinforcing bars (3). The top surface of the composite floor slab body (1) is cast with a top ring (4). The top surface of the composite floor slab body (1) is fixedly connected with a mounting base (5). A nut (6) is welded to the inner wall surface of the mounting base (5). A knurled bolt (7) is threaded onto the surface of the nut (6). The knurled bolt (7) is threaded onto the surface of a reserved junction box (8). The reserved junction box (8) is slidably fitted onto the nut. (6) Surface, the upper surface of the reserved wire box (8) is symmetrically connected with a connector (9), the other side surface of the connector (9) is connected with a collar (10), the inner wall surface of the collar (10) is fitted with a reserved pipe (11), the top surface of the intersection of the collar (10) and the reserved pipe (11) is fitted with an upper hoop (12), one side surface of the upper hoop (12) is rotatably connected to a lower hoop (14) by a rotating shaft (13), and the other side transverse end surface of the lower hoop (14) is threadedly connected to the transverse end of the upper hoop (12) by a bolt assembly (15).

2. The prefabricated composite floor slab cast-in-place electromechanical embedded structure according to claim 1, characterized in that: The two rows of top rings (4) are symmetrically distributed at equal intervals on the top of the composite floor slab body (1), and the top rings (4) are semi-circular integrated structures.

3. The prefabricated composite floor slab cast-in-place electromechanical embedded structure according to claim 1, characterized in that: The mounting base (5), nut (6), knurled bolt (7) and reserved junction box (8) form a threaded connection structure.

4. The prefabricated composite floor slab cast-in-place electromechanical embedded structure according to claim 3, characterized in that: The reserved wire box (8) has rectangular grooves on both sides, the shape and size of which are adapted to the nut (6), and a circular threaded through groove is opened horizontally at the rectangular groove on the surface of the reserved wire box (8), the shape and size of which are adapted to the knurled bolt (7).

5. The prefabricated composite floor slab cast-in-place electromechanical embedded structure according to claim 1, characterized in that: The connector (9) is a tubular structure, and its inner wall shape and size are adapted to the reserved pipe (11).

6. The prefabricated composite floor slab cast-in-place electromechanical embedded structure according to claim 1, characterized in that: The upper hoop (12), the rotating shaft (13) and the lower hoop (14) form a rotating connection structure. The upper hoop (12) and the lower hoop (14) have a circular threaded groove longitudinally opened at the intersection of their transverse ends. The shape and size of the groove are adapted to the bolt assembly (15).

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