Cable pipe penetrating device

Abstract

The invention relates to the technical field of building electrical construction, in particular to a cable pipe penetrating device which comprises an outer guide funnel detachably connected to a pipe opening of an embedded pipe and an inner pressing block installed in the outer guide funnel in a suspended mode. An annular anti-winding channel is formed between the outer guiding funnel and the inner pressing block and allows a plurality of wire harnesses to pass through in parallel. The inner pressing block presses the wire harness to be tightly attached to the inner wall of the outer guiding funnel, and the wire harness winding risk in the pipe penetrating process is eliminated. Balls are arranged on the inner wall of the outer guide funnel and the outer wall of the inner pressing block so as to reduce friction, and the outer guide funnel is of a detachable buckle structure so that installation can be facilitated. According to the invention, the problems of winding, damage and overlarge traction resistance during synchronous pipe penetration of multiple wire harnesses are solved, and the construction efficiency and safety are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building electrical construction, and in particular to a cable conduit threading device. Background Art

[0002] In pre-buried electrical installations, power cables and weak-wire harnesses often need to be threaded through PVC pipes, galvanized steel pipes, and other conduits pre-buried in walls or underground. Traditional construction methods rely on traction machines to pull the wires through the conduits one by one. However, for scenarios where multiple wires need to be laid simultaneously (such as data centers and densely packed smart building wiring), threading the wires one by one is inefficient and prolongs the construction time. If multiple wires are pulled simultaneously, the following technical drawbacks arise: 1. Entry entanglement problem: Multiple wire harnesses lack effective separation at the pipe entrance, making them easily entangled. After the entangled wire harnesses are forcibly pulled into the pipe, they form a twisted kink inside the pipe.

[0003] 2. Risk of wire harness damage: Kinking can cause cable sheath wear, insulation rupture, and even conductor deformation, leading to safety hazards such as short circuits and leakage.

[0004] 3. Reduced heat dissipation performance: The twisted wire harness fits tightly in the pipe, hindering heat dissipation. Long-term operation can easily accelerate aging due to local overheating, increasing the risk of fire.

[0005] 4. Increased traction resistance: The friction between the wire harnesses and the resistance of the inner wall of the pipeline are superimposed, resulting in a sharp increase in the load of the traction machine, which is prone to jamming, cable breakage or equipment damage.

[0006] Therefore, this application designs a device that can dynamically constrain the wire harness path at the pipe insertion entrance, prevent entanglement in real time and assist in traction, so as to improve the efficiency and safety of synchronous pipe insertion of multiple wire harnesses and solve the above technical bottlenecks. Summary of the Invention

[0007] In order to make up for the deficiencies in the prior art, the present invention provides a cable conduit threading device.

[0008] A cable pipe threading device includes an external guide funnel detachably connected to the pipe opening of a pre-buried pipe, characterized in that: An internal pressure block is detachably installed in the outer guide funnel. The internal pressure block is suspended in the outer guide funnel. The annular gap between the two serves as an anti-entanglement channel, allowing several wire harnesses to pass through here and enter the embedded pipe. When the traction machine pulls the wire harness, each wire harness is compressed by the internal pressure block and the outer guide funnel, so that it will not be entangled.

[0009] Furthermore, in order to better implement the present invention, the external guide funnel includes a clamping ring embedded in the pipe mouth of the embedded pipe, and a locking stud is provided on the clamping ring. When the embedded pipe is embedded in the clamping ring, the locking stud is tightened to fasten the clamping ring to the pipe mouth of the embedded pipe.

[0010] Furthermore, in order to better realize the present invention, the external guide funnel includes a funnel body fixedly connected to a clamping ring, and fixing ears are provided on both sides of the coarse-diameter portion of the funnel body, and the fixing ears are fixedly connected to the internal pressure block so that the internal pressure block is suspended in the funnel body.

[0011] Furthermore, in order to better implement the present invention, the outer guide funnel is a structure that can be split into two halves, and a buckle is provided at the connecting seam of the two halves.

[0012] Furthermore, in order to better implement the present invention, the internal pressure block includes a frustum, one side of the frustum is fixedly connected to a fixing plate, and the fixing plate is fixedly connected to the fixing ear by bolts.

[0013] Furthermore, in order to better implement the present invention, the inner wall of the outer guide funnel is provided with a plurality of balls; the outer wall of the inner pressure block is provided with a plurality of balls.

[0014] The beneficial effects of the present invention are: 1. The annular anti-entanglement channel formed by the inner and outer funnels physically isolates each harness, forcibly constraining the harness path throughout the pipe threading process, and completely eliminating the entanglement at the entrance and the twist-like kink in the pipe.

[0015] 2. The ball bearing design of the internal pressure block and the external guide funnel converts the sliding friction of the wiring harness into rolling friction, reducing the risk of cable sheath wear.

[0016] 3. The wire harnesses are arranged in parallel in the pipe to avoid tight fit caused by entanglement, ensure heat dissipation space, and eliminate the risk of local overheating.

[0017] 4. The detachable external guide funnel and snap-on design support quick disassembly and assembly; the locking studs are suitable for embedded pipes of different diameters and have strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the connection between the pipe-piercing device and the pre-buried pipe opening of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the external guide funnel of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the internal pressure block of the present invention.

[0019] In the figure, 1. Embedded pipe, 2. External guide funnel, 3. Internal pressure block, 4. Wire harness, 5. Anti-entanglement channel, 201. Snap ring, 202. Locking stud, 203. Buckle, 204. Funnel body, 205. Fixing ear, 301. Cone, 302. Fixing plate. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in a variety of different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0022] Figure 1-Figure 5 In this embodiment of the present invention, the mouth of the embedded pipe 1 is inserted into the retaining ring 201 of the outer guide funnel 2 and secured by tightening the locking studs 202. The fixing plates 302 of the inner pressure block 3 are bolted to the fixing ears 205 on both sides of the funnel body 204, so that the frustum 301 is suspended in the center of the funnel body 204.

[0023] The pipe threading operation is as follows: 1. Pass multiple wire harnesses 4 through the annular gap of the anti-entanglement channel 5 respectively, ensuring that each wire harness 4 fits the inner wall of the outer guide funnel 2; 2. When the traction machine is started to pull the wire harness 4, the balls of the inner pressure block 3 press the wire harness 4 against the balls on the inner wall of the outer guide funnel 2, and the wire harness 4 slides into the embedded pipe 1 in a radially separated state; The installation process for this embodiment is as follows: 1. Undo the buckle 203 at the connection seam of the outer guide funnel 2 and split the device into two halves; 2. Insert the lower part into the opening of the embedded pipe 1 and place the wiring harness 4 in the anti-entanglement channel 5 of the lower funnel; 3. Close the upper funnel and lock the buckle 203 to complete the quick assembly;

[0024] 4. After the pipe is threaded, the device can be disassembled by undoing the buckle 203 without cutting the wire harness 4.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limiting. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A cable pipe threading device, comprising an external guide funnel (2) detachably connected to the pipe opening of a pre-buried pipe (1), characterized in that: An inner pressure block (3) is detachably installed in the outer guide funnel (2). The inner pressure block (3) is suspended in the outer guide funnel (2). The annular space between the inner pressure block and the outer guide funnel serves as an anti-winding channel (5) through which a plurality of wire harnesses (4) pass together and enter the embedded pipe (1). When the traction machine pulls the wire harnesses (4), each wire harness (4) is compressed by the inner pressure block (3) and the outer guide funnel (2).

2. The cable conduit threading device according to claim 1, characterized in that: The outer guide funnel (2) comprises a clamping ring (201) embedded in the pipe mouth of the embedded pipe (1), and a locking stud (202) is provided on the clamping ring (201). When the embedded pipe (1) is embedded in the clamping ring (201), the locking stud (202) is tightened to fasten the clamping ring (201) to the pipe mouth of the embedded pipe (1).

3. The cable conduit threading device according to claim 2, characterized in that: The outer guide funnel (2) comprises a funnel body (204) fixedly connected to a snap ring (201), and fixing ears (205) are provided on both sides of the thick-diameter portion of the funnel body (204), and the fixing ears (205) are fixedly connected to the inner pressure block (3) so that the inner pressure block (3) is suspended in the funnel body (204).

4. The cable conduit threading device according to claim 2, characterized in that: The outer guide funnel (2) is a structure that can be split into two halves, and a buckle (203) is provided at the connecting seam between the two halves.

5. The cable conduit threading device according to claim 3, characterized in that: The internal pressure block (3) comprises a frustum (301), one side of the frustum (301) is fixedly connected to a fixing plate (302), and the fixing plate (302) is fixedly connected to the fixing ear (205) by means of bolts.

6. The cable conduit threading device according to claim 1, characterized in that: The inner wall of the outer guide funnel (2) is provided with a plurality of balls; the outer wall of the inner pressure block (3) is provided with a plurality of balls.

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