A new prefabricated stair and cast-in-place structure electrical pipeline special connecting device

Abstract

The utility model relates to electrical technical field, proposes a new prefabricated stair and cast-in-place structure electrical pipeline special connecting device, including prefabricated stair inside pre -buried connecting pipe and cast-in-place layer inside pre -buried electrical pipeline, through quick clamping assembly will metal hose both ends fixed pipe respectively with connecting pipe and electrical pipeline quick clamping, after clamping is completed, again through flange plate one with flange plate two, and under the cooperation of bolt and nut, make fixed pipe can stably with connecting pipe and electrical pipeline between fixed connection, to can effectively compensate the construction deviation in X, Y, Z three directions, protected the integrity of prefabricated component, eliminated the structural hidden danger and leakage risk caused by excavation, avoided the delay of construction period caused by pipeline unable to butt joint, simultaneously provided a continuous, smooth protection channel for wire and cable, prevent the wire from being scratched by sharp concrete edge in threading or using process.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to a novel connection device for electrical wiring between precast stairs and cast-in-place structures. Background Technology

[0002] As China's construction industry transforms towards industrialization, standardization, and informatization, prefabricated buildings have received strong government support due to their advantages such as energy conservation, environmental protection, improved efficiency, and shorter construction periods. Prefabricated staircases, as one of the most mature prefabricated components, are widely used. However, the coexistence and integration of "prefabrication" and "cast-in-place" construction methods have generated numerous "interface" problems, with electrical wiring connections being one of the most typical examples.

[0003] In traditional cast-in-place structures, the pre-embedding of electrical conduits is relatively flexible and can be adjusted according to the site conditions before pouring. However, in prefabricated buildings, prefabricated stairs are produced with high precision in the factory, while the construction of the cast-in-place part on site has certain errors, which can lead to connection difficulties. The outlet of the conduit pre-embedded in the prefabricated stairs and the inlet of the conduit pre-embedded in the cast-in-place layer often have positional deviations and cannot be successfully connected. In order to connect the conduits, workers often have to roughly chisel on the prefabricated components, which damages the integrity of the stair structure and the concrete protective layer, and even damages the steel bars. At the same time, the alignment, adjustment and repair work is time-consuming and laborious, affecting the overall construction progress. Therefore, a new type of special connection device for electrical conduits between prefabricated stairs and cast-in-place structures is needed. Utility Model Content

[0004] This utility model proposes a novel dedicated connection device for electrical conduits between precast stairs and cast-in-place structures, solving the connection difficulties in related technologies. The outlet of the conduit embedded in the precast stairs and the inlet of the conduit embedded in the cast-in-place layer often have positional deviations, making it impossible to connect smoothly. In order to connect the conduits, workers often have to roughly chisel on the precast components, damaging the structural integrity of the stairs and the concrete protective layer, and even damaging the reinforcing steel. At the same time, the alignment, adjustment and repair work is time-consuming and labor-intensive, affecting the overall construction progress.

[0005] The technical solution of this utility model is as follows: A new type of special connection device for electrical conduits between precast stairs and cast-in-place structures, including a connecting pipe embedded in the precast stairs and an electrical conduit embedded in the cast-in-place layer, wherein a flange is fixedly installed on the outer wall of both the connecting pipe and the electrical conduit.

[0006] A flexible metal tube is provided between the connecting pipe and the electrical conduit. Both ends of the flexible metal tube are provided with fixing tubes. An external threaded tube is fixedly installed on one side of the fixing tube, and the external threaded tube is threadedly connected to the flexible metal tube through a threaded connector on the flexible metal tube.

[0007] A quick-connect assembly is provided on the outer wall of the fixed pipe, and the fixed pipe is fixedly connected to the flange through the quick-connect assembly.

[0008] Flange 2 is fixedly installed on the outer side wall of both fixed pipes, and flange 2 is fixedly connected to flange 1 by bolts and nuts.

[0009] Preferably, a fixing component is provided on the outer wall of both the connecting pipe and the electrical conduit. A connecting rope is fixedly connected to the outer wall of the fixing component, and a circular plate is fixedly connected to the other end of the connecting rope. A rubber plug is fixedly installed on one side of the circular plate.

[0010] Preferably, the fixing component includes a first arc-shaped plate and a second arc-shaped plate that are symmetrically arranged vertically, and the connecting rope is fixedly connected to the first arc-shaped plate;

[0011] Two snap-fit ​​plates are symmetrically fixedly installed on the outer side wall of the first arc-shaped plate, and the snap-fit ​​plates are fixedly installed near the end of the first arc-shaped plate. A right-angle groove is opened on the outer side of the second arc-shaped plate near the end, and the snap-fit ​​plates are snapped into the right-angle groove.

[0012] Preferably, the quick-connect assembly includes a fixing ring that is bolted to the outer wall of the fixing tube, and two T-shaped plates are symmetrically fixed to the outer wall of the fixing ring;

[0013] A U-shaped frame is fixedly installed on one side of the T-shaped plate, and snap-fit ​​frames are fixedly installed on both inner walls of the U-shaped frame. Two plug-in plates are symmetrically fixedly installed on one side of the flange one, and one end of the plug-in plate passes through the rectangular opening on the flange two and snaps into the snap-fit ​​frame.

[0014] Preferably, an annular groove is provided on one side of both flange one and flange two, and a sealing ring is fixedly installed on one side of both flange one and flange two, with the sealing ring located inside the annular groove.

[0015] Preferably, the ports of the connecting pipe, the electrical conduit, and the fixing pipe are all designed as flared guide openings.

[0016] The working principle and beneficial effects of this utility model are as follows:

[0017] The quick-connect assembly allows for rapid connection of the fixed tubes at both ends of the flexible metal conduit to the connecting tubes and electrical wiring, respectively. After connection, flange one and flange two are used, along with bolts and nuts, to securely fix the fixed tubes to the connecting tubes and electrical wiring. This effectively compensates for construction deviations in the X, Y, and Z directions, protects the integrity of precast components, eliminates structural hazards and leakage risks caused by excavation, avoids construction delays caused by incompatible wiring, and provides a continuous, smooth protective channel for wires and cables, preventing them from being scratched by sharp concrete edges during wiring or use. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0020] Figure 2 A schematic diagram of the circular plate structure is provided for this utility model;

[0021] Figure 3 A schematic diagram of the external helical tube is provided for this utility model;

[0022] Figure 4 This utility model provides a structural schematic diagram of a quick-connect assembly;

[0023] Figure 5 A schematic diagram of the structure of the rubber stopper is provided for this utility model;

[0024] Figure 6 A structural schematic diagram of the fixing component is provided for this utility model.

[0025] In the diagram: 1. Connecting pipe; 2. Electrical wiring; 3. Flange 1; 4. Flexible metal conduit; 5. Fixing pipe; 6. External threaded pipe;

[0026] 7. Quick-connect assembly; 71. Retaining ring; 72. T-shaped plate; 73. U-shaped frame; 74. Snap-fit ​​bracket; 75. Insertion plate;

[0027] 8. Flange 2;

[0028] 9. Fixing component; 91. First arc-shaped plate; 92. Second arc-shaped plate; 93. Snap-fit ​​plate; 94. Right-angle groove;

[0029] 10. Connecting rope; 11. Circular plate; 12. Rubber plug; 13. Annular groove; 14. Sealing ring. Detailed Implementation

[0030] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0031] Example 1

[0032] Please see Figure 1 - Figure 6 A novel connection device for electrical wiring between precast stairs and cast-in-place structures includes a connecting pipe 1 embedded in the precast stairs and an electrical wiring 2 embedded in the cast-in-place layer. A flange 3 is fixedly installed on the outer wall of both the connecting pipe 1 and the electrical wiring 2.

[0033] A metal flexible conduit 4 is provided between the connecting pipe 1 and the electrical conduit 2. Both ends of the metal flexible conduit 4 are provided with fixing pipes 5. An external threaded pipe 6 is fixedly installed on one side of the fixing pipe 5, and the external threaded pipe 6 is threadedly connected to the metal flexible conduit 4 through the threaded connector on the metal flexible conduit 4.

[0034] A quick-connect assembly 7 is provided on the outer wall of the fixed pipe 5, and the fixed pipe 5 is fixedly connected to the flange 3 through the quick-connect assembly 7.

[0035] Flange 2 8 is fixedly installed on the outer side wall of both fixed pipes 5, and flange 2 8 is fixedly connected to flange 1 3 by bolts and nuts.

[0036] This utility model provides a novel connection device for electrical wiring in precast stairs and cast-in-place structures. In use, the quick-connect component 7 on the fixed pipe 5 allows the fixed pipes 5 at both ends of the metal flexible hose 4 to be connected to the connecting pipe 1 and the electrical wiring 2 respectively, thus initially connecting the metal flexible hose 4 to the connecting pipe 1 and the electrical wiring 2. Then, bolts are manually passed through the holes connecting flange 1 3 and flange 2 8, and nuts are tightened, further improving the fixing effect between the metal flexible hose 4, the fixed pipe 5, the connecting pipe 1, and the electrical wiring 2. Finally, with the cooperation of the metal flexible hose 4 and the fixed pipe 5, the device effectively compensates for construction deviations in the X, Y, and Z directions of the connecting pipe 1 and the electrical wiring 2, protecting the integrity of the precast components, eliminating structural hazards and leakage risks caused by excavation, avoiding construction delays caused by incompatible wiring, and providing a continuous, smooth protective channel for wires and cables, preventing them from being scratched by sharp concrete edges during wiring or use.

[0037] Furthermore, the quick-connect assembly 7 includes a retaining ring 71 that is fixedly mounted on the outer wall of the retaining tube 5 by bolts, and two T-shaped plates 72 are symmetrically fixedly mounted on the outer wall of the retaining ring 71;

[0038] A U-shaped frame 73 is fixedly installed on one side of the T-shaped plate 72. A snap-fit ​​frame 74 is fixedly installed on both inner walls of the U-shaped frame 73. Two plug-in plates 75 are symmetrically fixedly installed on one side of the flange 3, and one end of the plug-in plate 75 passes through the rectangular opening on the flange 8 and snaps into the snap-fit ​​frame 74.

[0039] Specifically, when flange 28 and flange 13 are manually aligned and fitted, one end of the plug plate 75 will pass through the rectangular opening on flange 28 and engage with the two snap-fit ​​brackets 74 inside the U-shaped bracket 73, so that the metal hose 4 and the fixed pipe 5 can be initially fixedly connected to the connecting pipe 1 and the electrical conduit 2, and at the same time, the holes on flange 28 and flange 13 can be aligned.

[0040] Furthermore, an annular groove 13 is provided on one side of both flange 3 and flange 8, and a sealing ring 14 is fixedly installed on one side of both flange 3 and flange 8, with the sealing ring 14 located inside the annular groove 13.

[0041] Specifically, the sealing ring 14 inside the annular groove 13 can improve the sealing effect between flange 2 8 and flange 1 3, which is crucial for humid environments or outdoor stairs.

[0042] Furthermore, the ports of the connecting pipe 1, the electrical conduit 2, and the fixing pipe 5 are all designed with flared guide openings.

[0043] Specifically, the flared guide design greatly facilitates the insertion of wires and prevents them from being scratched by sharp edges.

[0044] Example 2

[0045] Based on Embodiment 1, in this embodiment: a fixing component 9 is provided on the outer side wall of both the connecting pipe 1 and the electrical conduit 2. A connecting rope 10 is fixedly connected to the outer side wall of the fixing component 9. A circular plate 11 is fixedly connected to the other end of the connecting rope 10. A rubber plug 12 is fixedly installed on one side of the circular plate 11.

[0046] The technical solution provided in this embodiment is as follows: the connecting rope 10, the circular plate 11 and the rubber plug 12 are fixed to the connecting pipe 1 and the electrical conduit 2 by the fixing component 9. When pouring concrete, the rubber plug 12 on one side of the connecting rope 10 is manually inserted and sealed to the connecting pipe 1 or the electrical conduit 2, so as to prevent the connecting pipe 1 and the electrical conduit 2 from being blocked by concrete during pouring.

[0047] Furthermore, the fixing component 9 includes a first arc-shaped plate 91 and a second arc-shaped plate 92 that are symmetrically arranged vertically, and the connecting rope 10 is fixedly connected to the first arc-shaped plate 91;

[0048] Two snap-fit ​​plates 93 are symmetrically fixedly installed on the outer side wall of the first arc plate 91, and the snap-fit ​​plates 93 are fixedly installed near the end of the first arc plate 91. A right-angle groove 94 is provided on the outer side of the second arc plate 92 near the end, and the snap-fit ​​plates 93 and the right-angle groove 94 are snapped together.

[0049] Specifically, during use, the first arc plate 91 and the second arc plate 92 are manually attached to the connecting pipe 1 or the electrical conduit 2. At the same time, the protrusion on the snap-fit ​​plate 93 is snapped into the right-angle groove 94, so that the first arc plate 91, the second arc plate 92, the connecting rope 10, the circular plate 11 and the rubber plug 12 can be stably fixed to the connecting pipe 1 and the electrical conduit 2.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A new type of prefabricated stair and cast-in-place structure special connecting device for electrical pipeline, comprising a connecting pipe (1) embedded in the prefabricated stair and an electrical pipeline (2) embedded in the cast-in-place layer, characterized in that, Flanges (3) are fixedly installed on the outer walls of both the connecting pipe (1) and the electrical conduit (2). A metal flexible tube (4) is provided between the connecting pipe (1) and the electrical conduit (2). A fixing pipe (5) is provided at both ends of the metal flexible tube (4). An external threaded tube (6) is fixedly installed on one side of the fixing pipe (5), and the external threaded tube (6) is threadedly connected to the metal flexible tube (4) through a threaded connector on the metal flexible tube (4). A quick-connect assembly (7) is provided on the outer wall of the fixed tube (5), and the fixed tube (5) is fixedly connected to the flange (3) through the quick-connect assembly (7). Flange 2 (8) is fixedly installed on the outer side wall of both fixed pipes (5), and flange 2 (8) is fixedly connected to flange 1 (3) by bolts and nuts.

2. The novel precast staircase and cast-in-place structure electrical wiring connection device according to claim 1, characterized in that: Both the connecting pipe (1) and the electrical conduit (2) are provided with fixing components (9) on their outer side walls. A connecting rope (10) is fixedly connected to the outer side wall of the fixing component (9). A circular plate (11) is fixedly connected to the other end of the connecting rope (10). A rubber plug (12) is fixedly installed on one side of the circular plate (11).

3. The novel precast staircase and cast-in-place structure electrical wiring connection device according to claim 2, characterized in that: The fixing component (9) includes a first arc plate (91) and a second arc plate (92) that are symmetrically arranged vertically, and the connecting rope (10) is fixedly connected to the first arc plate (91).

4. The novel precast staircase and cast-in-place structure electrical wiring connection device according to claim 3, characterized in that: Two snap-fit ​​plates (93) are symmetrically fixedly installed on the outer side wall of the first arc plate (91), and the snap-fit ​​plates (93) are fixedly installed on the first arc plate (91) near the end. A right-angle groove (94) is opened on the outer side of the second arc plate (92) near the end, and the snap-fit ​​plates (93) and the right-angle groove (94) are snapped together.

5. A novel precast staircase and cast-in-place structure electrical wiring connection device according to claim 1, characterized in that: The quick-connect assembly (7) includes a fixing ring (71) that is fixedly mounted on the outer wall of the fixing tube (5) by bolts, and two T-shaped plates (72) are symmetrically fixedly mounted on the outer wall of the fixing ring (71).

6. A novel precast staircase and cast-in-place structure electrical wiring connection device according to claim 5, characterized in that: A U-shaped frame (73) is fixedly installed on one side of the T-shaped plate (72). A snap-fit ​​frame (74) is fixedly installed on both inner walls of the U-shaped frame (73). Two plug-in plates (75) are symmetrically fixedly installed on one side of the flange (3). One end of the plug-in plate (75) passes through the rectangular opening on the flange (8) and snaps into the snap-fit ​​frame (74).

7. A novel precast staircase and cast-in-place structure electrical wiring connection device according to claim 1, characterized in that: An annular groove (13) is provided on one side of both flange one (3) and flange two (8). A sealing ring (14) is fixedly installed on one side of both flange one (3) and flange two (8), and the sealing ring (14) is located inside the annular groove (13).

8. A novel precast staircase and cast-in-place structure electrical wiring connection device according to claim 1, characterized in that: The ports of the connecting pipe (1), the electrical conduit (2), and the fixing pipe (5) are all designed with horn-shaped guide openings.

Images