Cable pipe penetrating device and construction method thereof

Abstract

The invention relates to the technical field of cable construction, in particular to a cable pipe penetrating device and a construction method thereof.The cable pipe penetrating device is characterized in that a pulling device and a clamping device form a whole, an advancing device is detachably and fixedly connected to one side of the clamping device, a winding roller is arranged on the pulling device, a pulling rope is wound around the winding roller, the pulling rope is connected with a clamp, and the clamping device is connected with the clamping device; the clamp is clamped and embedded in the edge of one end of the embedded pipe, the pulling device and the clamping device are driven to the other end of the embedded pipe through the clamping device, after the end of the cable is inserted and fixed to the clamping device, the pulling device is started to clamp the cable to return to the end, where the clamp is installed, of the embedded pipe, and cable pipe penetrating is completed. The device can thoroughly isolate a cable copper core from being in contact with a pipe wall, is suitable for embedded pipes with different pipe diameters, and effectively solves the three problems of pipe wall scratching, cable clamping stagnation and low efficiency in traditional pipe penetrating.

Description

Technical Field

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

[0002] During the construction phase of power construction sites, a large number of pipelines are buried. During the cable laying process, the cables need to pass through the pre-buried pipelines. However, the existing technology has the following defects: 1. The exposed copper core at the cable end is very hard and has sharp edges. This easily causes friction or even scratches against the inner wall of the pipe (especially soft plastic pipes like PE and PVC) during threading. These scratches can form longitudinal grooves or burrs on the inner wall of the pipe, reducing its structural strength. The resulting sharp protrusions can also scratch the cable insulation, leading to insulation failure and a sudden increase in the risk of short circuits.

[0003] 2. During the cable conduit threading process, the copper core tip may become embedded in the conduit wall material, causing a mechanical bite, which can cause the cable to become stuck and unable to be pushed forward. This requires removing the cable and re-threading, significantly reducing efficiency and even damaging the cable itself.

[0004] 3. When relying on manual pushing, the axial thrust is difficult to maintain uniformity, which can easily increase the friction between the cable and the pipe wall; the traction line method requires pre-threading the traction rope, which is also a very troublesome task over long distances, and it is still impossible to avoid the copper core at the end of the cable from contacting the pipe wall during traction.

[0005] Some existing protective devices (such as cable end sleeves) attempt to alleviate this problem, but they suffer from inherent drawbacks such as easy detachment, inability to provide full protection, and inability to prevent clogging. Therefore, a pipe threading device and construction method are urgently needed that can completely isolate the cable copper core from contact with the pipe wall, actively provide traction power, and adapt to the pipe's inner diameter, thereby fundamentally eliminating the risk of damage to both the pipe wall and the cable. Summary of the Invention

[0006] In order to make up for the deficiencies in the prior art, the present invention provides a cable conduit threading device and a construction method thereof.

[0007] A cable conduit threading device, comprising a pulling device capable of traveling in a pre-buried conduit, characterized in that: The pulling device and the clamping device form an integral whole, and a traveling device is detachably fixedly connected to one side of the clamping device. A winding roller is provided on the pulling device, and a traction rope is wound around the winding roller. The traction rope is connected to a clip, and the clip is embedded in the edge of one end of the embedded pipe. The device drives the pulling device and the clamping device to the other end of the embedded pipe. After the cable end is inserted into and fixed in the clamping device, the pulling device is started to clamp the cable and return to the end of the embedded pipe where the clip is installed, thereby completing the cable threading.

[0008] Furthermore, in order to better realize the present invention, the pulling device and the clamping device share a rectangular shell, and the front end opening of the shell serves as a pulling mechanism mounting slot. The four walls of the pulling mechanism mounting slot are fixedly connected to a winding roller fixing plate, and the winding roller fixing plate is rotatably connected to a winding roller. There are 4 winding rollers connected end to end, and the adjacent winding rollers are connected end to end through a bevel gear set. One of the winding rollers is driven forward and reverse by a driving motor.

[0009] Furthermore, in order to better realize the present invention, the motor shaft of the drive motor faces the outside of the pulling mechanism mounting groove, the bottom of the drive motor is fixedly connected to the bottom of the pulling mechanism mounting groove, and two drive shaft fixing plates are fixedly connected in parallel in the pulling mechanism mounting groove. The drive shaft fixing plate is rotatably connected to the drive shaft, and the drive shaft is connected to the motor shaft of the drive motor through a bevel gear transmission, and the drive shaft is connected to the rotating shaft of a winding roller through a chain transmission.

[0010] Furthermore, in order to better implement the present invention, the traction rope is a high-performance polyethylene fiber line; and the clip is a U-shaped elastic clip.

[0011] Furthermore, in order to better implement the present invention, a control chip and a battery for controlling and connecting all electrical components are installed inside the housing, and the control chip is connected to an external mechanical switch or a remote control via a wireless connection.

[0012] Furthermore, in order to better realize the present invention, the clamping device includes a clamping cylinder arranged around the shell, and a semi-through hole is opened at the bottom of the shell as a cable clamping hole. The piston rod of the clamping cylinder serves as a clamping rod and extends from the side into the cable clamping hole to clamp the cable end.

[0013] Furthermore, in order to better realize the present invention, the traveling device includes a traveling base fixed to the bottom of the shell by a quick-release structure connected by magnetism or snaps, a through hole is provided in the center of the traveling base as a cable passage hole, spring rods are provided around the traveling base, and traveling wheels with motors are provided at the ends of the spring rods. The traveling wheels are made to stick to the inner wall of the embedded pipe through the extension and contraction of the spring rods, thereby driving the entire device to move.

[0014] Furthermore, in order to better implement the present invention, the traveling device is provided with several sets, and the spring rod stroke of each set is different to adapt to the embedded pipes with different inner diameters.

[0015] Based on the above cable conduit device, the specific construction method is as follows: S1, preparation stage, according to the diameter of the embedded pipe under construction, select a set of matching traveling devices and quickly install them on the bottom of the shell; S2: Clamp the four clips at 90-degree angles to the edge of the wall at one end of the embedded pipe, and squeeze the traveling wheel by hand to place the entire device inside the embedded pipe, with the traveling wheel fitting against the inner wall of the embedded pipe; S3, movement before pulling, the traveling wheel rotates, driving the entire device to move to the other end of the embedded pipe. During this process, the winding roller pays off the line and releases the traction rope connected to the clip; S4, cable clamping, insert one end of the cable into the clamping device, the clamping cylinder is activated, the exposed copper core of the cable end is covered and clamped in the shell; S5, the driving motor rotates, driving the reel-up roller to reel in the traction rope. Since the clip is fixed, the entire device will move with the cable to complete the pipe threading.

[0016] Furthermore, in order to better implement the present invention, in S5, the traveling wheels are synchronously reversed to assist the entire device in moving in the reverse direction.

[0017] The beneficial effects of the present invention are: 1. Full isolation protection: The copper core at the cable end is completely enclosed in the outer shell through a clamping device, completely eliminating the contact between the copper core and the pipe wall, avoiding scratches on the inner wall of the pipe and the cable insulation layer, and eliminating the risk of two-way damage from the root.

[0018] 2. Adaptive pipe diameter: The spring rod stroke of the traveling device is adjustable, and with multiple sets of replaceable traveling wheel assemblies, it can quickly adapt to embedded pipes with different inner diameters and has strong versatility.

[0019] 3. Unique "deliver first, then pull" dual-drive mode: The traveling wheel pushes the device to the far end of the pipeline, releasing the traction rope, and the reel pulls in the opposite direction to complete the pipe threading. The traveling wheel simultaneously reverses to provide auxiliary thrust, effectively preventing cable jams.

[0020] 4. Construction efficiency doubled: the traction rope pre-installation and pipe threading processes are completed at one time, eliminating the need for manual pre-threading of the traction rope and significantly shortening the pipe threading time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention during construction; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 This is the second schematic diagram of the three-dimensional structure of the present invention; Figure 4 It is a partial schematic diagram of the pulling mechanism of the present invention.

[0022] In the figure, 1. Embedded pipe, 2. Pulling device, 3. Clamping device, 4. Traveling device, 201. Housing, 202. Pulling mechanism mounting slot, 203. Winding roller fixing plate, 204. Winding roller, 205. Bevel gear set, 206. Driving motor, 207. Driving shaft fixing plate, 208. Driving shaft, 209. Chain, 210. Traction rope, 211. Clip, 301. Clamping cylinder, 302. Cable clamping hole, 303. Clamping rod, 401. Traveling base, 402. Cable passing hole, 403. Spring rod, 404. Traveling wheel. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] Figures 1-4 This is a specific embodiment of the present invention, and the specific workflow of this embodiment is as follows: Take the construction of DN100 embedded pipe as an example: 1. Component Matching: Select the travel device 4 with a spring rod 403 stroke of 40mm and install it on the bottom of the housing 201 through a magnetic interface or a buckle. The traction rope 210 is made of high-performance polyethylene fiber.

[0026] 2. Initial positioning: Clamp the four U-shaped clips 211 at 90° intervals to the starting end of the embedded pipe 1. Press the traveling wheel 404 to allow the entire device to enter the pipe, and the spring rod 403 allows the traveling wheel 404 to cling to the pipe wall.

[0027] 3. Remote push: Start the travel wheel motor, the device moves along the tube to the end, and the winding roller 204 pays off the wire synchronously.

[0028] 4. Cable fixing: The cable end is inserted into the cable clamping hole 302. The clamping cylinder 301 drives the clamping rod 303 to radially lock the copper core, completely covering the exposed sharp conductor.

[0029] 5. Reverse pulling: The drive motor 206 is started, and the four reel rollers 204 are linked via the bevel gear set 205 to synchronously reel in the rope. The traveling wheel 404 reverses to assist, and the device returns the cable to the starting end, completing the pipe threading.

[0030] 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 conduit device, comprising a pulling device (2) capable of traveling in a pre-buried conduit (1), characterized in that: The pulling device (2) and the clamping device (3) form a whole. A traveling device (4) is detachably fixedly connected to one side of the clamping device (3). A winding roller (204) is provided on the pulling device (2). A traction rope (210) is wound around the winding roller (204). The traction rope (210) is connected to a clip (211). The clip (211) is embedded in the edge of one end of the embedded pipe (1). The device (4) drives the pulling device (2) and the clamping device (3) to the other end of the embedded pipe (1). After the cable end is inserted into and fixed in the clamping device (3), the pulling device (2) is started to clamp the cable and return it to the end of the embedded pipe (1) where the clip (211) is installed, thereby completing the cable threading.

2. The cable conduit threading device according to claim 1, characterized in that: The pulling device (2) and the clamping device (3) share a rectangular housing (201), the front end opening of the housing (201) serves as a pulling mechanism mounting slot (202), a winding roller fixing plate (203) is fixedly connected to the four walls of the pulling mechanism mounting slot (202), a winding roller (204) is rotatably connected to the winding roller fixing plate (203), four winding rollers (204) are arranged end to end, the end portions of adjacent winding rollers (204) are driven by a bevel gear set (205), and one of the winding rollers (204) is driven to rotate forward and reverse by a driving motor (206).

3. The cable conduit threading device according to claim 2, characterized in that: The motor shaft of the driving motor (206) faces the outside of the pulling mechanism installation groove (202), and the bottom of the driving motor (206) is fixedly connected to the bottom of the pulling mechanism installation groove (202). Two driving shaft fixing plates (207) are fixedly connected in parallel in the pulling mechanism installation groove (202). The driving shaft fixing plates (207) are rotatably connected to the driving shaft (208). The driving shaft (208) is connected to the motor shaft of the driving motor (206) through a bevel gear transmission. The driving shaft (208) is connected to the rotating shaft of a winding roller (204) through a chain (209).

4. The cable conduit threading device according to claim 1, characterized in that: The traction rope (210) is a high-performance polyethylene fiber line; the clip (211) is a U-shaped elastic clip.

5. The cable conduit threading device according to claim 2, characterized in that: A control chip and a battery for controlling and connecting all electrical components are installed inside the housing (1); the control chip is connected to an external mechanical switch or a remote controller via a wireless connection.

6. The cable conduit threading device according to claim 1, characterized in that: The clamping device (3) includes a clamping cylinder (301) arranged around the housing (201), a semi-through hole is opened at the bottom of the housing (201) as a cable clamping hole (302), and a piston rod of the clamping cylinder (301) serves as a clamping rod (303) and extends from the side into the cable clamping hole (302) to clamp the cable end.

7. The cable conduit threading device according to claim 1, characterized in that: The traveling device (4) comprises a traveling base (401) fixed to the bottom of the housing (201) by a quick-release structure connected by magnetic attraction or snap fastening, a through hole (402) is provided at the center of the traveling base (401) as a cable passing hole, spring rods (403) are provided around the traveling base (401), and traveling wheels (404) with motors are provided at the ends of the spring rods (403). The traveling wheels (404) are pressed against the inner wall of the embedded pipe (1) by the extension and contraction of the spring rods (403), thereby driving the entire device to move.

8. The cable conduit threading device according to claim 1, characterized in that: The traveling device (4) is provided with a plurality of sets, and the spring rod (403) of each set has a different stroke to adapt to the embedded pipes (1) of different inner diameters.

9. A cable conduit construction method, based on the cable conduit device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, preparation stage, according to the diameter of the embedded pipe (1) currently under construction, a set of matching traveling devices (4) is selected and quickly installed on the bottom of the shell (201); S2, clamp the four clips (211) at an angle of 90 degrees to the edge of the wall of one end of the embedded pipe (1), squeeze the traveling wheel (404) by hand, so that the entire device is placed inside the embedded pipe (1), and the traveling wheel (404) fits the inner wall of the embedded pipe (1); S3, movement before pulling, the traveling wheel (404) rotates, driving the entire device to move to the other end of the embedded pipe (1), during which the winding roller (204) releases the line and releases the traction rope (210) connected to the clip (211); S4, cable clamping, inserting one end of the cable into the clamping device (3), the clamping cylinder (301) is actuated, covering the exposed copper core of the cable end and clamping it in the housing (201); S5, the driving motor (206) rotates, driving the reeling roller (204) to reel in the traction rope (210). Since the clip (211) is fixed, the entire device moves with the cable to complete the pipe threading.

10. The cable conduit construction method according to claim 9, characterized in that: In the above-mentioned S5, the traveling wheel (404) is synchronously reversed to assist the entire device in moving in the reverse direction.

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