Combined electric pull rod for live installation of overhead lines

Abstract

The present invention belongs to the technical field of high-voltage line maintenance and repair tools, and specifically relates to a combined electric pull rod for live installation of overhead lines, including an insulating pull rod, a magnetic lower box and a magnetic upper box, the upper end of the insulating pull rod is connected to the magnetic lower box, the magnetic lower box is connected to the magnetic upper box by magnetic attraction, a puncture needle assembly and a current transformer control assembly are arranged in the magnetic upper box, the puncture needle assembly includes a puncture needle and a puncture needle drive structure; the current transformer control assembly includes a worm motor and a worm, the worm is a bidirectional threaded rod, the bidirectional thread section of the worm is relatively connected to two chucks of the current transformer, and the upper wall of the magnetic upper box directly facing the worm is provided with a long strip slot for the movement of the two chucks of the current transformer, and the two chucks of the current transformer extend from the long strip slot. The present invention performs on-site power supply and data sampling on overhead lines when the overhead lines are not powered off.

Description

Technical Field

[0001] The invention belongs to the technical field of high-voltage line maintenance and repair tools, and in particular relates to a combined electric pull rod for live installation of overhead lines. Background Art

[0002] In modern society, stable power supply is crucial to all walks of life. In the power system, insulating rods, piercing clamps and current transformers play an indispensable role. They are all key components to ensure power safety and maintain stable operation of the power grid. They are not only key components to ensure the stable operation of the power system, but also "maintenance workers" to ensure the normal power supply in our daily life and industrial production.

[0003] The common insulating rod on the market is a kind of maintenance tool commonly used in high-voltage line maintenance. Its purpose is to isolate the current. Due to its excellent insulation performance, the insulating rod can effectively isolate the current, prevent the occurrence of leakage accidents, and ensure the personal safety of power maintenance personnel. It can also keep the high-voltage line relatively stable under extreme weather conditions, such as strong winds, heavy rains, freezing, etc., to ensure the continuous power supply of the power system. Moreover, the insulating rod can facilitate electricians to carry out maintenance and repair: the design of the insulating rod makes the maintenance and repair of power facilities more convenient. The common puncture wire clamp on the market is also a kind of maintenance tool commonly used in high-voltage line maintenance. Its purpose is to connect the overhead low-voltage insulated cables, and provide the voltage and current required for detection for the on-site power maintenance. The installation process is simple and fast, and there is no need to strip the cable insulation layer or cut off the main cable to make branch connections. Compared with traditional pre-branch cables, puncture wire clamps are more economical and affordable. The current transformer provides accurate data results of overhead cables to the site, including current data, voltage data, etc. High-voltage current transformers play an important role in power systems and other related fields due to their advantages such as safety and reliability, non-contact measurement, wide measurement range, small size and light weight, and low power consumption.

[0004] But on the other hand, they also have many disadvantages. For example, it is difficult to get electricity from the insulating pull rod. When high-voltage electricians inspect and repair high-voltage lines, they must shut down the high-voltage lines before they can work, and they cannot work with power on. As a result, each construction project requires a long and strict approval, and the approval is relatively slow, resulting in many problems not being handled in a timely manner. In addition, because each maintenance requires a power outage for work, and most of the lines that require frequent maintenance are in industrial areas, factories are often shut down for production, which seriously affects production efficiency. In addition, there are some occasions where live work requires high voltage electricity, and high-voltage maintenance personnel are often required to go up to the high-voltage lines. The same is true for piercing wire clamps and current transformers, and piercing wire clamps and current transformers also require power maintenance personnel on overhead lines to work at close range, which is a threat to the life safety of maintenance personnel. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a combined electric pull rod for live installation of overhead lines.

[0006] The present invention is implemented in this way, providing a combined electric pull rod for live installation of overhead lines, including an insulating pull rod, a magnetic lower box and a magnetic upper box, the upper end of the insulating pull rod is connected to the magnetic lower box, the magnetic lower box and the magnetic upper box are connected by magnetic attraction, a puncture needle assembly and a current transformer control assembly are arranged in the magnetic upper box, the puncture needle assembly includes a puncture needle and a puncture needle driving structure, the puncture needle driving structure is arranged in the magnetic upper box, the upper end of the puncture needle driving structure is connected to the puncture needle, the puncture needle is controlled to be extended and retracted, and the puncture needle is directly opposite to the puncture needle. The upper wall of the magnetic upper box is provided with a hole for the puncture needle to pass through; the current transformer control component includes a worm motor and a worm, the worm motor is arranged in the magnetic upper box, the upper end of the worm motor is connected to the turbine, the turbine is meshed with the worm, and the worm is a bidirectional threaded rod, both ends of the worm are rotatably connected to the inner wall of the magnetic upper box, the two chucks of the current transformer are relatively connected in the bidirectional threaded section of the worm, and a long slot for the movement of the two chucks of the current transformer is provided on the upper wall of the magnetic upper box opposite to the worm, and the two chucks of the current transformer extend from the long slot.

[0007] Preferably, a plurality of electromagnets are provided inside the magnetic lower box, and magnetic magnet sheets corresponding to the positions of the electromagnets are provided on the bottom wall of the magnetic upper box.

[0008] Further preferably, a potting resin is provided between the electromagnets of the magnetic attraction lower box.

[0009] Further preferably, a control board and a battery are provided in the magnetic upper box, the control board is respectively connected to the battery, the puncture needle drive structure, and the worm motor signal, and the control board is connected to the host computer or remote control via wireless communication.

[0010] Further preferably, an upper insulating connector is provided below the magnetic lower box, and a lower insulating connector is provided at the upper end of the insulating pull rod, and the upper insulating connector and the lower insulating connector are detachably connected.

[0011] Further preferably, the puncture needle driving structure is a push rod motor.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] The present invention provides a combined electric pull rod for live installation of overhead lines, which can perform on-site power supply and data sampling processes for the overhead lines below the overhead lines when the overhead lines are not powered off, and after the maintenance task is completed, the on-site power supply and data sampling equipment can be recovered below the overhead lines without climbing the pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the appearance of the present invention;

[0015] Figure 2 This is a right side view of the appearance of the present invention;

[0016] Figure 3 This is a top view of the appearance of the present invention;

[0017] Figure 4 A cross-sectional view of the present invention showing a puncture needle assembly;

[0018] Figure 5 A cross-sectional view of the present invention showing a current transformer control assembly. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] refer to Figure 1-Figure 5 The present invention provides a combined electric pull rod for live installation of overhead lines, comprising an insulating pull rod 7, a magnetic lower box 5 and a magnetic upper box 4, wherein the upper end of the insulating pull rod 7 is connected to the magnetic lower box 5, the magnetic lower box 5 and the magnetic upper box 4 are connected by magnetic attraction, a puncture needle assembly and a current transformer control assembly are arranged in the magnetic upper box 4, the puncture needle assembly comprises a puncture needle 8 and a puncture needle driving structure, the puncture needle driving structure is arranged in the magnetic upper box 4, the upper end of the puncture needle driving structure is connected to the puncture needle 8, and the puncture needle 8 is controlled to be extended and retracted, and an opening is provided on the upper wall of the magnetic upper box 4 directly facing the puncture needle 8. There is a hole for the puncture needle 8 to pass through; the current transformer control component includes a worm motor 1 and a worm 14, the worm motor 1 is arranged in the magnetic upper box 4, the upper end of the worm motor 1 is connected to the turbine 13, the turbine 13 is engaged with the worm 14, and the worm 14 is a bidirectional threaded rod, and the two ends of the worm 14 are rotatably connected to the inner wall of the magnetic upper box 4, and the two chucks 2 of the current transformer are relatively connected in the bidirectional thread section of the worm 14. On the upper wall of the magnetic upper box 4 opposite to the worm 14, there is a long slot for the movement of the two chucks 2 of the current transformer, and the two chucks 2 of the current transformer extend from the long slot.

[0021] When using the combined electric pull rod for live installation of overhead lines provided by the present invention, first fix the magnetic upper box body 4 on the magnetic lower box body 5 by magnetic attraction, and then the two clamps 2 of the current transformer can be brought close to the overhead line to be tested from under the overhead line, and then the worm motor 1 installed inside is remotely controlled to clamp the two clamps 2 of the current transformer to the tested cable. After the two clamps 2 of the current transformer clamp the tested cable, the puncture needle drive structure installed inside is remotely controlled to insert the head of the puncture needle 8 into the inside of the overhead cable, and the electricity is taken to the bottom through the connected cable to complete the task of sampling the on-site power data. After the detection is completed, the puncture needle drive structure installed inside is remotely controlled to move the puncture needle 8 out of the overhead cable, and then the worm motor 1 installed inside is remotely controlled to remotely open the two clamps 2 of the current transformer, remove the pull rod, and complete the recovery.

[0022] As a specific structure of magnetic attraction, a plurality of electromagnets 10 are arranged inside the magnetic attraction lower box 5 , and a magnetic attraction sheet 11 corresponding to the position of the electromagnets 10 is arranged on the bottom wall of the magnetic attraction upper box 4 .

[0023] By remotely controlling whether the electromagnet 10 is powered on or not, the magnetic lower box 5 and the magnetic upper box 4 can be closed or opened.

[0024] In order to increase insulation, a potting resin 12 is provided between the electromagnets 10 of the magnetic attraction lower box 5 .

[0025] In order to further realize remote control, a control board 16 and a battery 15 are provided in the magnetic upper box 4. The control board 16 is respectively connected to the battery 15, the puncture needle drive structure, and the worm motor 1 by signal. The control board 16 is connected to the host computer or remote control via wireless communication.

[0026] The battery 15 supplies power, and a host computer or a remote controller sends or receives signals to the puncture needle drive structure, the worm motor 1, the power switch of the electromagnet 10, etc., to achieve remote control.

[0027] In order to facilitate the connection between the magnetic lower box 5 and the insulating pull rod 7, an upper insulating connector 3 is provided under the magnetic lower box 5, and a lower insulating connector 6 is provided at the upper end of the insulating pull rod 7. The upper insulating connector 3 and the lower insulating connector 6 are detachably connected.

[0028] Preferably, the puncture needle driving structure is a push rod motor 9.

Claims

1. A combined electric pull rod installed on an overhead line, characterized in that: The invention comprises an insulating pull rod (7), a magnetic lower box (5) and a magnetic upper box (4), wherein the upper end of the insulating pull rod (7) is connected to the magnetic lower box (5), the magnetic lower box (5) and the magnetic upper box (4) are connected by magnetic attraction, a puncture needle assembly and a current transformer control assembly are arranged in the magnetic upper box (4), the puncture needle assembly comprises a puncture needle (8) and a puncture needle driving structure, the puncture needle driving structure is arranged in the magnetic upper box (4), the upper end of the puncture needle driving structure is connected to the puncture needle (8), and the puncture needle (8) is controlled to be retracted, and a hole for the puncture needle (8) to pass through is opened on the upper wall of the magnetic upper box (4) directly facing the puncture needle (8); the current transformer The sensor control component comprises a worm motor (1) and a worm (14). The worm motor (1) is arranged in a magnetic upper box (4). The upper end of the worm motor (1) is connected to a turbine (13). The turbine (13) meshes with the worm (14). The worm (14) is a bidirectional threaded rod. Both ends of the worm (14) are rotatably connected to the inner wall of the magnetic upper box (4). The bidirectional threaded section of the worm (14) is relatively connected to two clamps (2) of the current transformer. The upper wall of the magnetic upper box (4) directly facing the worm (14) is provided with a long slot for the two clamps (2) of the current transformer to move. The two clamps (2) of the current transformer extend from the long slot.

2. The combined electric pull rod for live installation of overhead lines according to claim 1, characterized in that: A plurality of electromagnets (10) are arranged inside the magnetic attraction lower box (5), and a magnetic attraction sheet (11) corresponding to the position of the electromagnets (10) is arranged on the bottom wall of the magnetic attraction upper box (4).

3. The combined electric pull rod for live installation of overhead lines according to claim 2, characterized in that: A potting resin (12) is provided between the electromagnets (10) of the magnetic attraction lower box (5).

4. The combined electric pull rod for live installation of overhead lines according to claim 1, characterized in that: A control panel (16) and a battery (15) are provided in the magnetic upper box (4); the control panel (16) is respectively connected to the battery (15), the puncture needle drive structure, and the worm motor (1) by signals; and the control panel (16) is connected to a host computer or a remote controller via wireless communication.

5. The combined electric pull rod for live installation of overhead lines according to claim 1, characterized in that: An upper insulating connector (3) is provided below the magnetic lower box (5), and a lower insulating connector (6) is provided at the upper end of the insulating pull rod (7), and the upper insulating connector (3) and the lower insulating connector (6) are detachably connected.

6. The combined electric pull rod for live installation of overhead lines according to claim 1, characterized in that: The puncture needle driving structure is a push rod motor (9).

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