CN221929259U - Spool pre-buried structure - Google Patents

Abstract

The utility model relates to the field of building construction, specifically a wire pipe pre-buried structure, including a plurality of wire pipes and a junction box; a plurality of first pipe joints, the first pipe joints are installed and connected with the wire pipe through the fasteners; a plurality of heat shrink tubes, the heat shrink tubes are sleeved outside the first pipe joints; a plurality of second pipe joints, each of the second pipe joints is located between the junction box and the wire pipe. The utility model is provided with heat shrink tubes, so that concrete slurry will not enter the wire pipe or the junction box through the interface gap between the wire pipe and the connector, and will not cause the wire pipe or the junction box to be blocked, so that the wire can be threaded smoothly, and the dual effect of preventing concrete slurry from corroding the wire pipe can be achieved, thereby better improving the installation quality.

Description

A wire tube pre-buried structure

Technical Field

The utility model relates to the technical field of building construction, in particular to a wire tube pre-buried structure.

Background Art

The standards and designs such as "Construction and Acceptance Procedures for Socket-Fixed Steel Conduit Wire and Pipeline" (CECS120-2007) require that JDG metal wire pipes be used for pre-buried projects such as fire alarm lines, emergency lighting lines, civil air defense projects, and strong and weak electricity.

In the prior art, JDG metal wire tubes are used for pre-embedding. The regulations require that "when connecting straight pipes, the two pipe openings are respectively inserted into the middle of the straight pipe joint, close to the two ends of the groove, and positioned with set screws before tightening until the nuts fall off." Because when the wire tube is connected to the pipe fitting, the inner diameter of the pipe fitting is slightly larger than the outer diameter of the pipe fitting, a small amount of concrete slurry often flows into the wire tube through the interface gap between the wire tube and the connector during concrete pouring, causing the wire tube to be blocked and, in severe cases, unable to thread the wire.

Utility Model Content

The purpose of the utility model is to provide a wire tube pre-buried structure to at least solve one of the problems raised in the above background technology.

The technical solution of the utility model is:

A wire tube pre-buried structure, comprising:

Several conduits and junction boxes;

A plurality of first pipe joints, each of which is located between two adjacent wire pipes, and at least two fixing bolts are provided on the first pipe joint, and the first pipe joint is installed, connected and fixed to the wire pipe through the fixing bolts;

A plurality of heat shrink tubes, wherein the heat shrink tubes are sleeved outside the first pipe joint, and the length of the heat shrink tubes is greater than the length of the first pipe joint;

A plurality of second pipe joints, each of which is located between the junction box and the wire tube, one end of the second pipe joint is connected to the junction box through a cup comb, and the other end of the second pipe joint is connected to the wire tube.

Furthermore, the second pipe joint includes a threaded fixing bolt and a heat shrink tube, the heat shrink tube is provided with at least one fixing bolt, the first pipe joint is installed, connected and fixed to the wire tube via the fixing bolt, the cup comb component includes a cup comb portion and a connecting portion, the connecting portion is connected to the wire tube via the fixing bolt on the cup comb, and the side wall of the junction box is located at the cup comb portion.

Furthermore, the first pipe joint and the second pipe joint are provided with fixing bolts, the connecting portion is connected to the wire tube by fixing bolts, and the inner surface of the cup comb is in close contact with the outer surface of the wire tube.

Furthermore, a positioning ring is provided in the middle of the inner wall of the first pipe joint, and the positioning ring is located in the middle part of the first pipe joint.

Furthermore, a plurality of reserved cup comb installation holes are provided on the outer wall surface of the junction box, and the diameter of the cup comb matches the diameter of the reserved cup comb installation holes.

Furthermore, the connecting portion passes through the reserved cup comb installation hole and is threadedly connected to the wire tube.

Furthermore, a blocking piece is provided at the cup comb mounting hole.

Furthermore, the baffle and the cup comb mounting hole are connected by at least one fastening bolt.

Furthermore, the first pipe joint and the second pipe joint are both made of iron-zinc alloy.

The utility model provides a wire tube pre-buried structure through improvement, which has at least the following improvements and beneficial effects compared with the prior art:

The utility model is provided with a heat shrink tube outside the first pipe joint, and the heat shrink tube is heated by a heat source such as a hot air blower or a spray gun, so that the heat shrink tube shrinks and tightens the first pipe joint and the wire pipe, and the concrete slurry will not enter the wire pipe through the interface gap between the wire pipe and the connector, and will not cause the wire pipe to be blocked, so the wire can be threaded smoothly. The cup comb is provided at the second pipe joint, and the wire pipe and the junction box are fixedly connected through the cup comb part. At the same time, the heat shrink tube is equipped at the second pipe joint, and the heat shrink tube is heated by a heat source such as a hot air blower or a spray gun, so that the heat shrink tube shrinks and tightens the second pipe joint and the wire pipe, and the concrete slurry will not enter the wire pipe or the junction box through the interface gap between the wire pipe and the connector, and will not cause the wire pipe or the junction box to be blocked, so the wire can be threaded smoothly, and the dual effect of preventing the concrete slurry from corroding the wire pipe can be achieved, thereby better improving the installation quality.

BRIEF DESCRIPTION OF THE DRAWINGS

The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

FIG1 is a partial structural schematic diagram of the first pipe joint embedded structure of the utility model;

FIG2 is a schematic structural diagram of another part of the second pipe joint embedded structure of the utility model;

FIG3 is a schematic structural diagram of another part of the second pipe joint embedded structure of the utility model;

FIG4 is a schematic structural diagram of the second pipe joint of the present invention;

FIG5 is a schematic structural diagram of the cup comb member of the present invention;

FIG. 6 is a schematic structural diagram of the first pipe joint of the present invention.

Description of reference numerals:

1. Wire tube; 2. Junction box; 3. First pipe joint; 4. Second pipe joint; 5. Heat shrink tube; 21. Junction box knock-out hole; 22. Baffle; 23. Support foot; 24. Mounting ear; 241. Mounting hole; 31. Tightening bolt; 32. Fixing ring; 41. Cup comb piece; 42. Sleeve; 411. Cup comb part; 412. Connecting part.

DETAILED DESCRIPTION

The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are described clearly and completely.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

In the description of the present utility model, the meaning of "several" is one or more, the meaning of "many" is two or more, "greater than", "less than", "exceed", etc. are understood to exclude the number, and "above", "below", "within", etc. are understood to include the number. It should also be understood that the term "and/or" used in the specification of this application and the attached claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

The standards and designs such as "Construction and Acceptance Procedures for Socket-Fixed Steel Conduit Wire and Pipeline" (CECS120-2007) require that JDG metal wire pipes be used for pre-buried projects such as fire alarm lines, emergency lighting lines, civil air defense projects, and strong and weak electricity.

In the prior art, JDG metal wire tubes are used for pre-embedding. The regulations require that "when connecting straight pipes, the two pipe openings are respectively inserted into the middle of the straight pipe joint, close to the two ends of the groove, and positioned with set screws before tightening until the nuts fall off." Because when the wire tube is connected to the pipe fitting, the inner diameter of the pipe fitting is slightly larger than the outer diameter of the pipe fitting, a small amount of concrete slurry often flows into the wire tube through the interface gap between the wire tube and the connector during concrete pouring, causing the wire tube to be blocked and, in severe cases, unable to thread the wire.

The utility model provides a wire tube pre-buried structure through improvement. The technical solution of the utility model is:

As shown in FIG1 , a wire tube pre-buried structure includes:

Several wire tubes 1 and junction boxes 2, wherein the wire tube 1 can prevent the wires and cables from being damaged or twisted, thereby improving the safety and reliability of construction. The wire tube 1 can also prevent the wires and cables from being damaged by external forces, thereby improving the stability and reliability of power transmission. The wire tube 1 is connected to the junction box 2, and the wires in the wire tube 1 are connected in the junction box 2, which plays the role of protecting the wires and connecting the wires.

Several first pipe joints 3, as shown in FIG1 and FIG6 , each of the first pipe joints 3 is located between two adjacent wire pipes 1, and at least two cup combs 31 are provided on the first pipe joint 3, and the first pipe joint 3 is installed and connected with the wire pipe 1 through the fixing bolts 31. A fixing hole is provided on the first pipe joint 3, and the fixing bolts 31 are threadedly connected with the fixing hole, and the inner surface of the fixing bolts 31 is in close contact with the outer surface of the wire pipe 1. During installation, the two wire pipes 1 are respectively inserted into the first pipe joint 3, and then the fixing bolts 31 are tightened to fix the wire pipe 1 and the first pipe joint 3 together. In some embodiments, a plurality of fixing bolts 31 may be provided, and they are distributed at a certain angle on the side wall of the first pipe joint 3, so that the connection between the wire pipe 1 and the first pipe joint 3 is more stable.

In some embodiments, a fixing ring 32 is provided at the middle of the inner wall of the first pipe joint 3, and the fixing ring 32 is located between two adjacent first joints 3. The fixing ring 32 is used to position the wire tube 1 when the wire tube 1 is installed. When the first pipe joint 3 connects two wire tubes 1, it is prevented that the part of one wire tube 1 inserted into the first pipe joint 3 is too long, while the part of the other wire tube 1 inserted into the pipe joint is too short, so as to avoid uneven stress distribution, and the wire tube 1 is not easy to fall out, and the installation is more stable.

Several heat shrink tubes 5 are provided as shown in FIG1 . The heat shrink tubes 5 are sleeved outside the first pipe joint 3, and the length of the heat shrink tubes 5 is greater than the length of the first pipe joint 3. After the first pipe joint 3 is installed, the heat shrink tubes 5 are sleeved, and then the heat shrink tubes 5 are heated by a heat source such as a hot air blower or a spray gun, so that the heat shrink tubes 5 shrink and tighten the first pipe joint 3 and the wire pipe 1. At this time, the concrete slurry will not enter the wire pipe 1 through the interface gap between the wire pipe 1 and the connector, and will not cause the wire pipe 1 to be blocked, so the wire can be threaded smoothly.

A plurality of second pipe joints 4, as shown in Fig. 2 and Fig. 3, each of the second pipe joints 4 is located between the junction box 2 and the wire tube 1, one end of the second pipe joint 4 is connected to the junction box 2 cup comb, and the other end of the second pipe joint 4 is connected to the wire tube 1. The second pipe joint 4 is used to connect the wire tube 1 and the junction box 2, and fix and seal the connection between the two.

In some embodiments, as shown in FIG2 , the heat shrink tube 5 is also sleeved outside the second pipe joint 4, and the length of the heat shrink tube 5 is greater than the length of the second pipe joint 4. After the second pipe joint 4 is installed, the heat shrink tube 5 is sleeved, and then the heat shrink tube 5 is heated by a heat source such as a hot air blower or a spray gun, so that the heat shrink tube 5 shrinks and tightens the second pipe joint 4 and the wire pipe 1. At this time, the concrete slurry will not enter the wire pipe 1 through the interface gap between the wire pipe 1 and the connector, nor will it enter the junction box 2, so that the wire pipe 1 and the junction box 2 will not be blocked, and the threading and wiring work can be smooth.

In some embodiments, as shown in FIG. 4 and FIG. 5 , the second pipe joint 4 includes a cup comb 41 and a sleeve 42 that are threadedly connected. The cup comb 41 and the sleeve 42 are used to fix the connection of the junction box 2 and connect the wire tube 1 and the junction box 2. The sleeve 42 is provided with at least one fixing bolt 31, and the second pipe joint 4 is provided with a fixing bolt hole, and the fixing bolt 31 is threadedly connected to the fixing hole. The first pipe joint 3 is installed and connected to the wire tube 1 through the fixing bolt 31. The cup comb 41 includes a cup comb part 411 and a connecting part 412, and the connecting part 412 is threadedly connected to the sleeve 42. The side wall of the junction box 2 is located between the cup comb part 411 and the sleeve 42.

In some embodiments, as shown in FIG. 4 and FIG. 5 , the outer wall of the junction box 2 is provided with a plurality of reserved cup comb holes 21, and the diameter of the cup comb portion 411 is larger than the diameter of the reserved cup comb hole 21. When connecting the wire tube 1 and the reserved junction box 2, firstly insert the cup comb portion 411 of the cup comb member 41 into the reserved cup comb hole 21 from the inside of the junction box 2, the cup comb portion 411 of the cup comb member 41 is pressed against the inner wall of the junction box 2, and the cup comb sleeve portion 412 is threadedly connected with 411, and is installed and fixed on the junction box; then the wire tube 1 is inserted into the sleeve 42, and then the fixing bolt 31 is tightened to fix the wire tube 1 and the sleeve 42 together, and the installation of the wire tube 1 and the junction box 2 is completed. Due to the provision of the cup comb portion 411, the gap at the connection between the wire tube 1 and the junction box 2 is blocked by the cup comb portion 411, and concrete slurry will not enter the wire tube 1 or the junction box 2 through the interface gap between the wire tube 1 and the connector, and will not cause blockage of the wire tube 1 and the junction box 2, so that threading and wiring work can be carried out smoothly.

In some embodiments, as shown in FIG. 2 and FIG. 3 , a baffle 22 is provided at the reserved cup comb hole 21. The baffle 22 and the reserved cup comb hole 21 are connected by at least one support leg 23. The support leg 23 is configured to be a destructible support leg 23. When a certain reserved cup comb hole 21 needs to be used, the support leg 23 is destroyed, and then the corresponding baffle 22 is removed, which makes the operation easier, ensures the integrity of the junction box 2 as much as possible, prevents concrete slurry from entering the junction box, and ensures the strength of the box body.

In some embodiments, as shown in Figures 2 and 3, the junction box 2 is provided with a plurality of mounting ears 24, and a mounting hole 241 is provided in the center of the mounting ears 24. The mounting ears 24 and the mounting holes 241 are used to install panels such as switches and sockets on the junction box 2.

In some embodiments, the first pipe joint 3 and the second pipe joint 4 are both made of iron-zinc alloy.

In this embodiment, a heat shrink tube 5 is arranged outside the first pipe joint 3, and the heat shrink tube 5 is heated by a heat source such as a hot air blower or a spray gun, so that the heat shrink tube 5 shrinks and tightens the first pipe joint 3 and the wire tube 1, and the concrete slurry will not enter the wire tube 1 through the interface gap between the wire tube 1 and the connector, and will not cause the wire tube 1 to be blocked, so that the wire can be threaded smoothly. At the same time, by providing the cup comb part 411, the gap at the connection between the wire tube 1 and the junction box 2 is blocked by the cup comb part 411, and at the same time, a heat shrink tube 5 is arranged outside the second pipe joint 4, and the heat shrink tube 5 is heated by a heat source such as a hot air blower or a spray gun, so that the heat shrink tube 5 shrinks and tightens the second pipe joint 4 and the wire tube 1, and the concrete slurry will not enter the wire tube 1 or the junction box 2 through the interface gap between the wire tube 1 and the connector, and will not cause the wire tube 1 and the junction box 2 to be blocked, so that the wire can be threaded and connected smoothly, and the dual effect of preventing the concrete slurry from corroding the wire tube 1 and the junction box 2 can be achieved, thereby better improving the installation quality.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A wire tube pre-buried structure, characterized by comprising: Several conduits and junction boxes; A plurality of first pipe joints, each of which is located between two adjacent wire pipes, and at least two fixing bolts are provided on the first pipe joint, and the first pipe joint is installed, connected and fixed to the wire pipe through the fixing bolts; A plurality of heat shrink tubes, wherein the heat shrink tubes are sleeved outside the first pipe joint, and the length of the heat shrink tubes is greater than the length of the first pipe joint; A plurality of second pipe joints, each of which is located between the junction box and the wire tube, one end of the second pipe joint is connected to the junction box through a cup comb, and the other end of the second pipe joint is connected to the wire tube. 2. A wire pipe pre-buried structure according to claim 1, characterized in that the second pipe joint includes a threaded locking bolt and a heat shrink tube, the heat shrink tube is provided with at least one locking bolt, the first pipe joint is installed and fixed to the wire pipe through the locking bolt, the cup comb component includes a cup comb part and a connecting part, the connecting part is connected to the wire pipe by the locking bolts on the cup comb component, and the side wall of the junction box is located at the cup comb part. 3. A wire pipe pre-buried structure according to claim 2, characterized in that the first pipe joint and the second pipe joint are provided with fixing bolts, the connecting part is connected to the wire pipe by fixing bolts, and the inner surface of the cup comb is in close contact with the outer surface of the wire pipe. 4. A wire pipe pre-buried structure according to claim 2, characterized in that a positioning ring is provided in the middle of the inner wall of the first pipe joint, and the positioning ring is located in the middle part of the first pipe joint. 5. A wire tube embedded structure according to claim 2, characterized in that a plurality of reserved cup comb installation holes are opened on the outer wall surface of the junction box, and the diameter of the cup comb matches the diameter of the reserved cup comb installation holes. 6. A wire tube embedded structure according to claim 5, characterized in that the connecting portion passes through the reserved cup comb mounting hole and is threadedly connected to the wire tube. 7. A wire tube pre-buried structure according to claim 5, characterized in that a blocking piece is provided at the cup comb mounting hole. 8. A wire tube embedded structure according to claim 7, characterized in that the baffle and the cup comb mounting hole are connected by at least one fastening bolt. 9. A wire tube pre-buried structure according to claim 1, characterized in that the first pipe joint and the second pipe joint are both made of iron-zinc alloy.