Underground cable laying tool and use method

Abstract

The invention belongs to the technical field of buried cable laying, and relates to a buried cable laying tool and a use method.The buried cable laying tool comprises traction equipment, cable feeding equipment and a connecting assembly, the connecting assembly comprises an inner threaded sleeve, an outer threaded sleeve and a steel wire rope, and the outer threaded sleeve is in threaded connection with the inner threaded sleeve and can completely cover the whole inner threaded sleeve; one end of the internal thread sleeve is uniformly provided with a plurality of expansion gaps parallel to the axis of the internal thread sleeve, the end, provided with the expansion gaps, of the internal thread sleeve expands outwards in a natural state to form a conical cylinder structure, the inner diameter of the conical cylinder structure is larger than the outer diameter of a cable, and when the external thread sleeve is connected to the outer side of the conical cylinder structure in a sleeving mode, the conical cylinder structure shrinks to form a straight cylinder structure. The large-diameter long-distance buried cable laying device has the advantages that the large-diameter long-distance buried cable laying device is simple in structure, the technological operation is convenient, the working efficiency and the operation safety of laying large-diameter long-distance buried cables in cable trenches can be greatly improved, and the labor intensity of operators can be favorably reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of underground cable laying, and in particular, relates to an underground cable laying tool and a use method thereof. Background Art

[0002] Cable laying refers to the process of laying and installing cables along the surveyed route to form a cable line. According to the application occasion, it can be divided into several laying methods such as overhead, underground (pipeline and direct burial), underwater, wall and tunnel. Reasonable selection of cable laying method is very important to ensure the transmission quality, reliability and construction and maintenance of the line.

[0003] Usually when laying large-diameter long-distance buried cables, it is usually necessary to lay the cables in cable trenches or culverts by a lot of manual dragging, which has high safety risks, is time-consuming and labor-intensive, and the cables are easily damaged. In the prior art, there are also some improved laying tools and laying methods, such as the Chinese patent document CN201810359005.1, which discloses a guiding device, including a shell and a self-locking part, one end of the shell is provided with an interface for inserting a threading tube into the shell, and the self-locking part is arranged on the inner wall of the interface; the self-locking part is funnel-shaped, the cross-sectional radius of one end of the self-locking part is smaller than the cross-sectional radius of the other end of the self-locking part, and one end of the self-locking part opens toward the inside of the shell, and the end of the threading tube extending into the culvert pipeline passes through one end of the self-locking part and is inserted into and abuts against the shell, and the self-locking part has an interference fit with the tube wall of the threading tube. This guide device can effectively improve construction efficiency, reduce construction difficulty and cost, and ensure the safety of workers in certain situations, but it is not suitable for laying large-diameter and long-distance underground cables in cable trenches (large-diameter cables usually have a diameter of more than 10 cm).

[0004] Therefore, technical personnel in this field urgently need to develop a new underground cable laying tool and use method to improve the work efficiency and operation safety of laying large-diameter and long-distance underground cables in cable trenches and reduce the labor intensity of operators. Summary of the invention

[0005] The purpose of the present invention is to provide an underground cable laying tool and a method of use, so as to improve the work efficiency and operation safety of laying large-diameter and long-distance underground cables in cable trenches and reduce the labor intensity of operators.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A buried cable laying tool, including a traction device, a cable delivery device and a connecting component, the connecting component including an internal threaded sleeve, an external threaded sleeve and a steel wire rope, the external threaded sleeve being threadedly connected to the internal threaded sleeve, and the external threaded sleeve can completely cover the entire internal threaded sleeve, one end of the internal threaded sleeve is evenly provided with a plurality of expansion slots parallel to its axis, and the end of the internal threaded sleeve with the expansion slots expands outward into a conical cylinder structure in a natural state, the inner diameter of the conical cylinder structure is larger than the outer diameter of the cable, and the inner wall of the conical cylinder structure is provided with anti-slip stripes or anti-slip protrusions, one end of the cable is inserted into the conical cylinder structure, and when the external threaded sleeve is connected to the outside of the conical cylinder structure, the conical cylinder structure shrinks into a straight cylinder structure, and the inner diameter of the straight cylinder structure is smaller than the outer diameter of the cable, thereby compressing the cable, the end of the external threaded sleeve away from the cable is provided with a cover, the end of the cover away from the cable is connected to the traction device through the steel wire rope, and the end of the cable away from the conical cylinder structure is connected to the cable delivery device.

[0008] As a preferred solution of the present invention, the cable laying tool also includes a plurality of arc-shaped support bars laid in the bottom of the cable trench, the arc-shaped support bars are arranged perpendicular to the length direction of the cable, and the arc-shaped support bars protrude from the bottom of the cable trench, and the outer surface of the arc-shaped support bars is a smooth stainless steel surface. This arrangement can reduce the friction between the cable and the ground when laying, thereby helping to protect the insulation skin on the outer surface of the cable.

[0009] As a preferred solution of the present invention, the traction equipment includes a remote-controlled car with a camera function. The remote-controlled car is connected to a wireless remote controller via a wireless communication module. The remote-controlled car can be remotely controlled to move forward, turn and avoid obstacles. This setting can remotely control cable laying without the need for operators to drag in the cable trench, thereby helping to improve construction safety and efficiency.

[0010] As a preferred solution of the present invention, the remote-controlled vehicle is a tracked electric remote-controlled vehicle, which has good terrain adaptability and a certain obstacle-crossing capability.

[0011] As a preferred solution of the present invention, the cable delivery device includes a cable reel and a cable reel support, the cable reel is rotatably connected to the cable reel support, and the cable reel support is also provided with a cable delivery frame, the cable delivery frame is a door-type frame, and two conveying rollers are rotatably connected to the door-type frame, the two conveying rollers are arranged in parallel, and the gap between the two conveying rollers matches the diameter of the cable, and the roller shaft of the conveying roller located on the lower side is connected to a driving motor, and the driving motor is fixed to the door-type frame. This setting can push the cable forward while releasing the cable, thereby saving the traction force of the traction device.

[0012] As a preferred solution of the present invention, the length of the internal threaded sleeve is 200-300mm. This arrangement, on the one hand, ensures the firm clamping of the cable end, and on the other hand, prevents the connecting component from getting stuck in the cable trench at a bend or narrow part of the cable trench, affecting normal movement.

[0013] The present invention also provides a method for using the above-mentioned underground cable laying tool, comprising the following steps:

[0014] S1. Take one end of the cable out of the cable delivery device, insert it into the cone structure of the internal thread sleeve, tighten the external thread sleeve to change the cone structure into a straight structure, so that the connection assembly is firmly connected to the cable;

[0015] S2. Place the traction equipment into the cable trench, start the traction equipment to drag the cable through the connection assembly for laying, and the cable delivery equipment performs the cable delivery operation simultaneously;

[0016] S3. After the cable is laid in place, rotate the external threaded sleeve toward the end of the internal threaded sleeve away from the cone structure, so that the cone structure expands again, thereby achieving the separation of the connecting component and the cable. According to the required length of the cable, cut off the other end of the cable from the cable delivery device.

[0017] The present invention also includes other devices, components or steps that enable it to be used normally, which are all conventional technical means in the field; in addition, the devices, components or steps not limited in the present invention all adopt conventional means in the field, such as a remote-controlled car with a camera function, a wireless communication module, a wireless remote control and a drive motor, etc. Technicians in this field can select their models and installation methods according to actual usage requirements, and clearly understand how to install and control them specifically, which will not be described in detail here.

[0018] The working principle of the present invention is that the connecting component of the present application can clamp the end of the cable without damage and can effectively protect the end of the cable. When in use, tighten the external threaded sleeve to shrink the conical cylinder structure of the internal threaded sleeve into a straight cylinder structure, and cooperate with the anti-slip stripes or anti-slip protrusions inside the conical cylinder structure to firmly clamp the cable. Then, the connecting component is dragged by the traction equipment to drive the cable to be laid in the cable trench. The cable feeding equipment is used to release the cable and push the cable forward, which helps to save the traction force of the traction equipment.

[0019] The beneficial effects of the present invention are as follows: the device of the present invention has a simple structure and convenient process operation, can greatly improve the work efficiency and operation safety of laying large-diameter and long-distance buried cables in cable trenches, and helps to reduce the labor intensity of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of an underground cable laying device in Example 1.

[0022] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part A in FIG.

[0023] Figure 3 This is a schematic diagram of the side structure of the cable delivery equipment in Example 1.

[0024] Figure 4 This is a schematic diagram of the front structure of the cable delivery rack in Example 1.

[0025] Figure 5 This is a schematic diagram of the side structure of the arc-shaped support bar in Example 1.

[0026] In the figure, 1-cable trench, 2-arc support bar, 3-inner thread sleeve, 4-external thread sleeve, 5-wire rope, 6-expansion joint, 7-cable, 8-cover, 9-crawler type electric remote control trolley, 10-reel, 11-reel support, 12-cable delivery rack, 13-conveying roller, 14-driving motor. DETAILED DESCRIPTION

[0027] The present invention is described clearly below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description herein is only used to explain the present invention, but is not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, any modifications, equivalent substitutions, improvements, etc., should be included in the protection scope of the present invention.

[0028] Example 1

[0029] Please refer to Figures 1 to 5 The present invention provides an underground cable laying tool, comprising a traction device, a cable delivery device and a connection component, wherein the connection component comprises an internal threaded sleeve 3, an external threaded sleeve 4 and a steel wire rope 5, wherein the external threaded sleeve is threadedly connected to the internal threaded sleeve, and the external threaded sleeve can completely cover the entire internal threaded sleeve, and one end of the internal threaded sleeve is evenly provided with a plurality of expansion slits 6 parallel to its axis, and the end of the internal threaded sleeve provided with the expansion slit expands outward into a cone structure in a natural state, the inner diameter of the cone structure is larger than the outer diameter of the cable 7, and the inner wall of the cone structure is provided with anti-slip stripes (not shown in the figure), one end of the cable is inserted into the cone structure, and when the external threaded sleeve is connected to the outside of the cone structure, the cone structure shrinks into a straight structure, and the inner diameter of the straight structure is smaller than the outer diameter of the cable, thereby compressing the cable, and a cover 8 is provided at one end of the external threaded sleeve away from the cable, and the end of the cover away from the cable is connected to the traction device through a steel wire rope, and the end of the cable away from the cone structure is connected to the cable delivery device.

[0030] In this embodiment, the cable laying tool also includes a plurality of arc-shaped support bars 2 laid in the bottom of the cable trench 1, the arc-shaped support bars are arranged perpendicular to the length direction of the cable, and the arc-shaped support bars protrude from the bottom of the cable trench, and the outer surface of the arc-shaped support bars is a smooth stainless steel surface. This arrangement can reduce the friction between the cable and the ground when laying, thereby helping to protect the insulation skin on the outer surface of the cable.

[0031] Specifically, the traction equipment includes a tracked electric remote-controlled vehicle 9 with a camera function. The remote-controlled vehicle is connected to a wireless remote controller (not shown in the figure) through a wireless communication module (not shown in the figure). The remote-controlled vehicle can be remotely controlled to move forward, turn and avoid obstacles through the wireless remote controller. This setting can remotely control cable laying without the need for operators to drag in the cable trench, thereby helping to improve construction safety and construction efficiency. The tracked electric remote-controlled vehicle has good terrain adaptability and a certain obstacle-crossing capability.

[0032] More specifically, the cable delivery device includes a cable reel 10 and a cable reel support 11, the cable reel is rotatably connected to the cable reel support, and the cable reel support is also provided with a cable delivery frame 12, the cable delivery frame is a portal frame, and two conveying rollers 13 are rotatably connected to the portal frame, the two conveying rollers are arranged in parallel, and the gap between the two conveying rollers matches the diameter of the cable, and the roller shaft of the conveying roller located on the lower side is connected to a driving motor 14, and the driving motor is fixed to the portal frame. This setting can push the cable forward while releasing the cable, thereby saving the traction force of the traction device.

[0033] Among them, the length of the internal threaded sleeve is 200mm. This setting, on the one hand, ensures the firm clamping of the cable end, and on the other hand, prevents the connecting component from being stuck in the cable trench at a bend or narrow part of the cable trench, affecting normal movement.

[0034] The working principle of the present invention is that the connecting component of the present application can clamp the end of the cable without damage and can effectively protect the end of the cable. When in use, tighten the external threaded sleeve to shrink the conical cylinder structure of the internal threaded sleeve into a straight cylinder structure, and cooperate with the anti-slip stripes inside the conical cylinder structure to firmly clamp the cable. Then, the connecting component is dragged by the traction equipment to drive the cable to be laid in the cable trench. The cable feeding equipment is used to release the cable and push the cable forward, which helps to save the traction force of the traction equipment.

[0035] Example 2

[0036] This embodiment provides a method for using the underground cable laying tool described in Embodiment 1, comprising the following steps:

[0037] S1. Take one end of the cable out of the cable delivery device, insert it into the cone structure of the internal thread sleeve, tighten the external thread sleeve to change the cone structure into a straight structure, so that the connection assembly is firmly connected to the cable;

[0038] S2. Place the traction equipment into the cable trench, start the traction equipment to drag the cable through the connection assembly for laying, and the cable delivery equipment performs the cable delivery operation simultaneously;

[0039] S3. After the cable is laid in place, rotate the external threaded sleeve toward the end of the internal threaded sleeve away from the cone structure, so that the cone structure expands again, thereby achieving the separation of the connecting component and the cable. According to the required length of the cable, cut off the other end of the cable from the cable delivery device.

[0040] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An underground cable laying tool, comprising a traction device, a cable delivery device and a connection assembly, characterized in that: The connecting assembly includes an internal threaded sleeve, an external threaded sleeve and a wire rope, the external threaded sleeve is threadedly connected to the internal threaded sleeve, and the external threaded sleeve can completely cover the entire internal threaded sleeve, one end of the internal threaded sleeve is evenly provided with a plurality of expansion slots parallel to its axis, and the end of the internal threaded sleeve with the expansion slot expands outward into a conical cylinder structure in a natural state, the inner diameter of the conical cylinder structure is larger than the outer diameter of the cable, and the inner wall of the conical cylinder structure is provided with a non-slip surface, one end of the cable is inserted into the conical cylinder structure, and when the external threaded sleeve is connected to the outside of the conical cylinder structure, the conical cylinder structure shrinks into a straight cylinder structure, and the inner diameter of the straight cylinder structure is smaller than the outer diameter of the cable, thereby compressing the cable, and a cover is provided at one end of the external threaded sleeve away from the cable, and the end of the cover away from the cable is connected to the traction equipment through the wire rope, and the end of the cable away from the conical cylinder structure is connected to the cable sending equipment.

2. The underground cable laying tool according to claim 1, characterized in that: The cable laying tool also includes a plurality of arc-shaped support bars laid in the bottom of the cable trench. The arc-shaped support bars are arranged perpendicular to the length direction of the cable and protrude from the bottom of the cable trench. The outer surface of the arc-shaped support bars is a smooth stainless steel surface.

3. The underground cable laying tool according to claim 1, characterized in that: The traction equipment comprises a remote control car with a camera function. The remote control car is connected to a wireless remote controller via a wireless communication module. The wireless remote controller can remotely control the remote control car to move forward, turn and avoid obstacles.

4. The underground cable laying tool according to claim 3, characterized in that: The remote-controlled car is a tracked electric remote-controlled car.

5. The underground cable laying tool according to claim 1, characterized in that: The cable delivery equipment includes a cable reel and a cable reel support, the cable reel is rotatably connected to the cable reel support, the cable reel support is also provided with a cable delivery frame, the cable delivery frame is a portal frame, and the portal frame is rotatably connected to two conveying rollers, the two conveying rollers are arranged in parallel, and the gap between the two conveying rollers matches the diameter of the cable, the roller shaft of the conveying roller located on the lower side is transmission-connected to a driving motor, and the driving motor is fixed on the portal frame.

6. The underground cable laying tool according to claim 1, characterized in that: The length of the internal thread sleeve is 200-300 mm.

7. A method for using the underground cable laying tool according to any one of claims 1 to 6, characterized in that: The steps include: S1. Take one end of the cable out of the cable delivery device, insert it into the cone structure of the internal thread sleeve, tighten the external thread sleeve to change the cone structure into a straight structure, so that the connection assembly is firmly connected to the cable; S2. Place the traction equipment into the cable trench, start the traction equipment to drag the cable through the connection assembly for laying, and the cable delivery equipment performs the cable delivery operation simultaneously; S3. After the cable is laid in place, rotate the external threaded sleeve toward the end of the internal threaded sleeve away from the cone structure, so that the cone structure expands again, thereby achieving the separation of the connecting component and the cable. According to the required length of the cable, cut off the other end of the cable from the cable delivery device.

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