Power transmission and distribution line maintenance grounding device

Abstract

The present invention discloses a maintenance grounding device for a power transmission and distribution line, comprising: an insulating operating rod, a grounding head detachably connected to the top of the insulating operating rod, a protective ring arranged at the bottom of the insulating operating rod, and a grounding wire connected to the grounding head, wherein: an insulating operating rod motor is arranged in the insulating operating rod, which is used to control the rotation and rise or fall of the lower end of the grounding head, assist the grounding head to be in close contact with or separated from the maintenance conductor, and control the energization or de-energization of the grounding wire motor; grounding wire motors are respectively arranged in multiple branches of the grounding wire, which are used to control the connection or disconnection between the grounding end of the grounding wire and the maintenance conductor end; a control module for controlling the insulating operating rod motor and the grounding wire motor is arranged on the protective ring. The present invention can greatly protect the safety of maintenance personnel and greatly simplify the efficiency of installing and removing the grounding wire.

Description

Technical Field

[0001] The present invention relates to the technical field of electricity, and more particularly to a grounding device for the maintenance of power transmission and distribution lines. Background Art

[0002] In the prior art, a grounding wire needs to be installed during the maintenance of power transmission and distribution lines to ensure the safety of maintenance personnel. When installing and removing the grounding wire, an insulating operating rod with the corresponding voltage level must be used. Currently, for voltages of 110 kV and below, the insulating operating rod and the grounding wire are integrated. The commonly used operating heads on the market are mainly divided into double-tongue operating heads and spiral operating heads (flat mouth, monkey head). The double-tongue type is in direct contact with the power transmission and distribution line during use; the spiral operating type first contacts the power transmission and distribution line with the operating head, and then the grounding head is brought into close contact with the power transmission and distribution line by rotating the insulating operating rod. Currently, the spiral operating head is mainly used during the maintenance of power transmission and distribution lines. During the process of installing and removing the grounding wire, the human body cannot come into contact with the grounding wire. If accidental contact occurs, it cannot prevent harm to the human body in the event of a sudden power supply to the power transmission and distribution line. In addition, the above-mentioned process makes the installation and removal time-consuming and laborious. Summary of the Invention

[0003] The purpose of the present invention is to provide a grounding device for the maintenance of power transmission and distribution lines, aiming to solve the above problems in the prior art.

[0004] The present invention provides a grounding device for the maintenance of power transmission and distribution lines, which specifically includes: an insulating operating rod, a grounding head detachably connected to the top of the insulating operating rod, a protective ring provided at the bottom of the insulating operating rod, and a grounding wire connected to the grounding head, wherein:

[0005] An insulating operating rod motor is provided in the insulating operating rod, which is used to control the rotation and lifting or lowering of the lower end of the grounding head, assist the grounding head to come into close contact with or separate from the maintenance conductor, and control the energization or de-energization of the grounding wire motor;

[0006] Grounding wire motors are respectively provided in multiple branches of the grounding wire, which are used to control the connection or disconnection between the grounding end of the grounding wire and the maintenance conductor end;

[0007] A control module for controlling the insulating operating rod motor and the grounding wire motor is provided on the protective ring.

[0008] By adopting the embodiment of the present invention, the safety of maintenance personnel can be greatly protected, and the efficiency of installing and removing the grounding wire can be greatly simplified.

[0009] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. In order to make the above and other purposes, features, and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are hereinafter specifically exemplified. Brief Description of the Drawings

[0010] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0011] Figure 1 FIG. is a schematic structural diagram of an insulating operating rod and a grounding head of an embodiment of the power transmission and distribution line maintenance grounding device according to an embodiment of the present invention;

[0012] Figure 2 FIG. is a schematic structural diagram of the overall structure of an embodiment of the power transmission and distribution line maintenance grounding device according to an embodiment of the present invention;

[0013] Figure 3 FIG. is a schematic structural diagram of an insulating operating rod and a grounding head of another embodiment of the power transmission and distribution line maintenance grounding device according to an embodiment of the present invention;

[0014] Figure 4 FIG. is a schematic structural diagram of the overall structure of another embodiment of the power transmission and distribution line maintenance grounding device according to an embodiment of the present invention. Detailed Description of the Embodiments

[0015] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0017] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined. In addition, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] According to an embodiment of the present invention, there is provided a grounding device for the maintenance of power transmission and distribution lines, which can be used for the maintenance of power transmission and distribution lines of 110 kV and below in practical applications.

[0019] Embodiment 1

[0020] Figure 1 FIG. 10 is a schematic structural view of an insulating operating rod and a grounding head of an embodiment of the grounding device for the maintenance of power transmission and distribution lines according to an embodiment of the present invention. Figure 2 FIG. 11 is a schematic overall structural view of an embodiment of the grounding device for the maintenance of power transmission and distribution lines according to an embodiment of the present invention. Among them, (1) is a grounding head fixing body (arc-shaped structure), which is first hung on the wire during use, and the grounding head rotating body rises (descends) and then closely contacts (separates) the maintenance wire; (2) is a grounding head rotating body (screw structure), which rotates and rises (descends) through the thimble 1 inside the insulating operating rod during use, so that the wire closely contacts (separates) the fixing body of the grounding head; (3) is an insulating operating rod (separable from the grounding head); (4) is a power supply system; (5) is a motor 1; (6) is a thimble 1 (driven by the motor 1 to make a reciprocating rotary motion, so that the grounding head closely contacts (separates) the wire); (7) is a thimble 2 (driven by the motor 1 to make a reciprocating vertical motion, so that the power supply is turned on (off)); (8) is a motor 2; (9) is a thimble 3 (driven by the motor 2 to make a reciprocating horizontal motion, so that the wire end is connected (disconnected) to the grounding end); (10) is a wire end; (11) is a grounding end; (12) is a protective ring (control module, provided with buttons to control the movement of thimbles 1, 2, 3) (a charging connector for the power supply system is provided at the bottom).

[0021] The grounding device for the maintenance of power transmission and distribution lines according to an embodiment of the present invention specifically includes:

[0022] An insulating operating rod, a grounding head detachably connected to the top of the insulating operating rod, a protective ring provided at the bottom of the insulating operating rod, and a grounding wire connected to the grounding head. In the embodiment of the present invention, a buckle is provided at the bottom of the grounding head, and a chuck adapted to the buckle is provided at the top of the insulating operating rod. The detachable connection between the grounding head and the insulating operating rod is achieved through the buckle and the chuck. The insulating operating rod integrated with the grounding wire only plays an auxiliary role during the installation and removal process (during the installation and removal of the grounding wire, a sufficient safety distance must be maintained between the human body and the power transmission and distribution lines. For different voltage levels, the insulation strength and length of the insulating operating rod are different). Based on this consideration, the insulating operating rod and the grounding head are changed to a conveniently detachable structure. By adding a buckle at the bottom of the grounding head, the insulating operating rod and the grounding head are reliably connected during the installation and removal process, and the insulating operating rod and the grounding head are separated at other times (when connected to the maintenance line and when stored in the safety tool cabinet). Here, the number of insulating operating rods for the grounding wire can be greatly reduced;

[0023] During the installation and removal of the grounding wire, to ensure close contact between the grounding head and the maintenance line, it is necessary to rotate the insulating rod to achieve this. This operation is time-consuming and laborious during high-altitude operations. Consider adding a motor device inside the insulating rod to assist the grounding head in making close contact with the maintenance wire; therefore, an insulating operating rod motor is provided in the insulating operating rod, which is used to control the lower end of the grounding head to rotate up or down, assist the grounding head in making close contact with or separating from the maintenance wire, and control the energization or de-energization of the grounding wire motor;

[0024] Specifically, a first ejector pin and a second ejector pin are provided on the insulating operating rod motor; the insulating operating rod motor is specifically used for: when installing the grounding wire, rotating the first ejector pin upward to control the grounding head to make close contact with the maintenance wire; after the grounding head makes close contact with the maintenance wire, pushing the second ejector pin upward to control the grounding wire motor to be energized with the power supply system; when removing the grounding wire, pushing the second ejector pin upward to control the grounding wire motor to be energized with the power supply system, and after energization, rotating the first ejector pin downward to control the grounding head to separate from the maintenance wire.

[0025] During the process of installing and removing the grounding wire, the human body must not come into contact with the grounding wire to prevent sudden power-on from causing harm to the human body. Currently, the grounding wires used on the market all have a structure of one main wire + three branch wires. It is considered to install a device inside the branch wires of the grounding wire to physically separate the branch of the grounding wire from the main wire. During the installation and removal process, the human body can come into contact with the grounding wire (it will not cause harm to the human body when the line is powered on), achieving the "safety of objects" state. Therefore, in the embodiments of the present invention, a horizontal movement grounding wire motor is respectively provided in each of the multiple branches of the grounding wire, and a third ejector pin is respectively provided on each of the horizontal movement grounding wire motors. The horizontal movement grounding wire motor is specifically configured to: after being powered on with the power supply system, simultaneously push the third ejector pin in the horizontal direction (for example, to the left) with other horizontal movement grounding wire motors to control the three branches of the grounding wire to be connected simultaneously; after being powered on with the power supply system again, simultaneously push the third ejector pin in the horizontal direction (for example, to the right) with other horizontal movement grounding wire motors to control the three branches of the grounding wire to be disconnected simultaneously.

[0026] A control module for controlling the insulating operating rod motor and the grounding wire motor is provided on the protective ring. The control module specifically includes: a control chip, and a first control button, a second control button, and a third control button connected to the control chip, where:

[0027] The control chip is configured to: during the installation of the grounding wire, in response to the user's operation on the first control button, control the insulating operating rod motor to start rotating the first ejector pin upward; after the three grounding heads are installed, in response to the user's operation on the second control button, control the insulating operating rod motor to start pushing the second ejector pin upward, and in response to the user's operation on the third control button, control the horizontal movement grounding wire motor to start pushing the third ejector pin in the horizontal direction (to the left); during the removal of the grounding wire, in response to the user's operation on the second control button again, control the insulating operating rod motor to start pushing the second ejector pin upward, in response to the user's operation on the third control button, control the horizontal movement grounding wire motor to start pushing the third ejector pin in the horizontal direction (to the right), and in response to the user's operation on the first control button again, control the insulating operating rod motor to start rotating the first ejector pin downward to separate the grounding head from the overhaul wire. In the embodiments of the present invention, it can work according to the following steps: During the installation of the grounding wire: a. The insulating operating rod is connected to the grounding head (different connection mechanisms can be used to achieve convenient and reliable operation); b. The grounding head is hung on the wire through the insulating operating rod; c. The lower end of the grounding head is rotated by the motor (i.e., the above-mentioned insulating operating rod motor) to make the grounding head in close contact with the wire ( Figure 1The ejector pin 1 shown (i.e., the first ejector pin mentioned above); repeat the above steps. After the third grounding wire is installed (after the grounding head is in close contact with the wire), operate the ejector pin 2 (i.e., the second ejector pin mentioned above) to energize the grounding wire operating mechanism ( Figure 1 The motor 2 shown (i.e., the grounding wire motor mentioned above), operate the ejector pin 3 (i.e., the third ejector pin mentioned above) to connect the three branches of the grounding wire simultaneously. The last step is to remove the insulating operating rod to complete the work. The process of removing the grounding wire is exactly the opposite of the above steps. The ejector pin 2 moves upward to energize the motor 2. Operate the ejector pin 3 to disconnect the wire ends of multiple branches of the grounding wire from the grounding end simultaneously (the ejector pin 3 realizes simultaneous disconnection of 3 wires). The ejector pin 2 moves downward to disconnect the power supply of the motor 2. The ejector pin 1 rotates downward to separate the grounding head from the wire, and then remove the grounding head. Repeat the steps until all three grounding heads are removed.

[0028] As can be seen from the above description, adding a motor device (the motor 1 is the insulating operating rod motor) inside the insulating operating rod realizes the following functions:

[0029] 1. Rotate the rotating body (ejector pin 1) under the grounding head upward (downward) to make the grounding head in close contact with (separate from) the maintenance line;

[0030] 2. Push the ejector pin 2 upward (downward) to energize (de-energize) the grounding wire motor;

[0031] Adding a motor device (the motor 2 is the grounding wire motor) inside the grounding wire realizes the following functions:

[0032] Connect (disconnect) the grounding end and the wire end of the grounding wire for multiple branches of the grounding wire through the ejector pin 3 to the left (right);

[0033] The above three functions are realized by adding buttons at the bottom of the insulating operating rod for easy operation.

[0034] The insulating operating rod motor starts to rotate the first ejector pin downward to control the separation of the grounding head from the maintenance wire.

[0035] In Embodiment 1, the sheath provided at the connection between the grounding wire and the grounding head is of a rigid structure. The original grounding wire is divided into a vertical end and a horizontal end (physically isolated). The vertical end is connected to the grounding head (forming a "wire end"), and the horizontal end is connected to the grounding wire (forming a "grounding end"). The upper part of the vertical end uses a hard copper wire to connect to the grounding head through a nut, and the lower part of the vertical end is a hard copper wire that can be telescoped left and right; the horizontal end is a sleeve joint connected to a soft copper wire; through the drive of the motor, the lower part of the vertical end, which is a telescopic hard copper wire, realizes physical connection and isolation with the grounding end sleeve joint.

[0036] In addition, for the 0.4 kV voltage level, there is one main line + four branches (including the neutral line); for the 10(20 kV), 35 kV(66 kV), and 110 kV voltage levels, there is one main line + three branches. All of them are applicable to the technical solutions of the embodiments of the present invention.

[0037] Embodiment 2

[0038] Figure 3 It is a schematic structural diagram of an insulating operating rod and a grounding head of another embodiment of the power transmission and distribution line maintenance grounding device according to the embodiment of the present invention. Figure 4 It is a schematic overall structural diagram of another embodiment of the power transmission and distribution line maintenance grounding device according to the embodiment of the present invention. Among them, ⑴ is the grounding head fixing body (arc-shaped structure), which is first hung on the wire during use, and the grounding head rotating body rises (descends) and then closely contacts (separates) the maintenance wire; ⑵ is the grounding head rotating body (screw structure), which rotates up (down) through the thimble 1 inside the insulating operating rod during use, so that the wire closely contacts (separates) the fixing body of the grounding head; ⑶ is the insulating operating rod (separable from the grounding head); ⑷ is the power supply system; ⑸ is the motor 1; ⑹ is the thimble 1 (driven by the motor 1 to make a reciprocating rotational motion, so that the grounding head closely contacts (separates) the wire); ⑺ is the thimble 2 (driven by the motor 1 to make a reciprocating vertical motion, so that the power supply is turned on (off)); ⑻ is the motor 2; ⑼ is the thimble 3 (driven by the motor 2 to make a reciprocating horizontal motion, so that the wire end is connected (disconnected) to the grounding end); ⑽ is the motor 3; ⑾ is the thimble 4 (driven by the motor 3 to make a reciprocating vertical motion, so that the wire end is connected (disconnected) to the grounding end); ⑿ is the wire end; ⒀ is the grounding end; ⒁ is the protective ring (control module, provided with buttons to control the movement of thimbles 1, 2, and 3) (a charging connector for the power supply system is provided at the bottom).

[0039] The power transmission and distribution line maintenance grounding device according to the embodiment of the present invention specifically includes:

[0040] An insulating operating rod, a grounding head detachably connected to the top of the insulating operating rod, a protective ring provided at the bottom of the insulating operating rod, and a grounding wire connected to the grounding head. In the embodiment of the present invention, a buckle is provided at the bottom of the grounding head, and a clamping head adapted to the buckle is provided at the top of the insulating operating rod. The detachable connection between the grounding head and the insulating operating rod is achieved through the buckle and the clamping head. The insulating operating rod integrated with the grounding wire only plays an auxiliary role during the installation and removal process (during the installation and removal of the grounding wire, a sufficient safety distance must be maintained between the human body and the power transmission and distribution line. For different voltage levels, the insulation strength and length of the insulating operating rod are different). Based on this consideration, the insulating operating rod and the grounding head are changed to a conveniently detachable structure. By adding a buckle at the bottom of the grounding head, the insulating operating rod and the grounding head are reliably connected during the installation and removal process, and the insulating operating rod and the grounding head are separated at other times (when connected to the maintenance line and stored in the safety tool cabinet). Here, the number of grounding wire insulating operating rods can be greatly reduced;

[0041] During the installation and removal of the grounding wire, to ensure close contact between the grounding head and the maintenance line, it is necessary to rotate the insulating rod to achieve this. This operation is time-consuming and laborious during high-altitude operations. It is considered to add a motor device inside the insulating rod to assist the grounding head in closely contacting the maintenance wire. Therefore, an insulating operating rod motor is provided in the insulating operating rod to control the rotation and lifting or lowering of the lower end of the grounding head, assist the grounding head in closely contacting or separating from the maintenance wire, and control the energization or power-off of the grounding wire motor;

[0042] Specifically, a first ejector pin and a second ejector pin are provided on the insulating operating rod motor. The insulating operating rod motor is specifically used for: when installing the grounding wire, rotating the first ejector pin upward to control the grounding head to closely contact the maintenance wire; after the grounding head closely contacts the maintenance wire, pushing the second ejector pin upward to control the energization of the grounding wire motor and the power system; when removing the grounding wire, pushing the second ejector pin upward to control the energization of the grounding wire motor and the power system. After energization, rotating the first ejector pin downward to control the grounding head to separate from the maintenance wire.

[0043] During the process of installing and removing the grounding wire, the human body should not come into contact with the grounding wire to prevent sudden power-on from causing harm to the human body. Currently, the grounding wires used in the market all have a structure of one main wire + three branch wires. It is considered to install a device inside the branch wires of the grounding wire to physically separate the branch of the grounding wire from the main wire. During the installation and removal process, the human body can come into contact with the grounding wire (it will not cause harm to the human body when the line is powered on), achieving the "safety of objects" state. Therefore, in the embodiments of the present invention, a horizontal movement grounding wire motor and a vertical movement grounding wire motor are respectively arranged in multiple branches of the grounding wire. A third ejector pin is respectively arranged on each horizontal movement grounding wire motor, and a fourth ejector pin is respectively arranged on each vertical movement grounding wire motor. The horizontal movement grounding wire motor is specifically used for: after being powered on with the power supply system, simultaneously pushing the third ejector pin in the horizontal direction (for example, to the right) with other horizontal movement grounding wire motors to control the three branches of the grounding wire to be connected simultaneously; after being powered on with the power supply system again, simultaneously pushing the third ejector pin in the horizontal direction (for example, to the left) with other horizontal movement grounding wire motors to control the three branches of the grounding wire to be disconnected simultaneously. The vertical movement grounding wire motor is specifically used for: after being powered on with the power supply system, simultaneously pushing the fourth ejector pin in the vertical direction (for example, downwards) with other vertical movement grounding wire motors to control the three branches of the grounding wire to be connected simultaneously; after being powered on with the power supply system again, simultaneously pushing the fourth ejector pin in the vertical direction (for example, upwards) with other vertical movement grounding wire motors to control the three branches of the grounding wire to be disconnected simultaneously.

[0044] A control module for controlling the insulating operating rod motor and the grounding wire motor is arranged on the protective ring. The control module specifically includes: a control chip, a first control button, a second control button, and a third control button connected to the control chip, where:

[0045] The control chip is used for: when installing the grounding wire, in response to the user's operation on the first control button, controlling the insulating operating rod motor to start rotating the first ejector pin upward; after the three grounding heads are installed, in response to the user's operation on the second control button, controlling the insulating operating rod motor to start pushing the second ejector pin upward; in response to the user's operation on the third control button, controlling the horizontal moving grounding wire motor to start pushing the third ejector pin (rightward) in the horizontal direction, and controlling the vertical moving grounding wire motor to start pushing the fourth ejector pin (downward) in the vertical direction; when removing the grounding wire, in response to the user's operation on the second control button again, controlling the insulating operating rod motor to start pushing the second ejector pin upward; in response to the user's operation on the third control button, controlling the horizontal moving grounding wire motor to start pushing the third ejector pin (leftward) in the horizontal direction, and controlling the vertical moving grounding wire motor to start pushing the fourth ejector pin (upward) in the vertical direction; in response to the user's operation on the first control button again, controlling the insulating operating rod motor to start rotating the first ejector pin downward, and controlling the grounding head to separate from the maintenance wire.

[0046] In the embodiment of the present invention, it can work according to the following steps: During the installation of the grounding wire: a. Connect the insulating operating rod to the grounding head (different connection mechanisms can be used to achieve convenient and reliable operation); b. Hang the grounding head on the wire through the insulating operating rod; c. Rotate the lower end of the grounding head through the motor (i.e., the above-mentioned insulating operating rod motor) to make the grounding head in close contact with the wire ( Figure 4 the ejector pin 1 shown is the above-mentioned first ejector pin); repeat the above steps. After the third grounding wire is installed (after the grounding head is in close contact with the wire), operate the ejector pin 2 (i.e., the above-mentioned second ejector pin) to energize the grounding wire operating mechanism ( Figure 2 the motors 2 and 3 shown are the above-mentioned horizontal moving grounding wire motor and vertical moving grounding wire motor), and at the same time operate the ejector pin 3 (i.e., the above-mentioned third ejector pin) to move horizontally and operate the ejector pin 4 (i.e., the above-mentioned fourth ejector pin) to move vertically, so that the three branches of the grounding wire are connected simultaneously. The last step is to remove the insulating operating rod to complete the work. The process of removing the grounding wire is completely opposite to the above steps. The ejector pin 2 moves upward to energize the grounding wire operating mechanism ( Figure 2 the motors 2 and 3 shown are the above-mentioned horizontal moving grounding wire motor and vertical moving grounding wire motor), and at the same time operate the ejector pins 3 and 4 to disconnect the wire ends of multiple branches of the grounding wire from the grounding end simultaneously (the ejector pins 3 and 4 achieve simultaneous disconnection of 3 roots). The ejector pin 2 moves downward to disconnect the power supply of the motors 2 and 3. The ejector pin 1 rotates downward to separate the grounding head from the wire, remove the grounding head, and repeat the steps until all three grounding heads are removed.

[0047] As can be seen from the above description, adding a motor device (Motor 1, i.e., the insulating operating rod motor) inside the insulating operating rod realizes the following functions:

[0048] 1. Rotate the rotating body (ejector pin 1) at the lower part of the grounding head upward (downward) to make the grounding head in close contact with (separate from) the overhaul line;

[0049] 2. Push the ejector pin 2 upward (downward) to energize (de-energize) the grounding wire motor;

[0050] Adding a motor device (Motors 2 and 3, i.e., the grounding wire motors) inside the grounding wire realizes the following functions:

[0051] Motor 2 makes the grounding end and the wire end of the grounding wire connected (disconnected) through the ejector pin 3 to the right (left) for multiple branches of the grounding wire;

[0052] Motor 3 makes the grounding end and the wire end of the grounding wire connected (disconnected) through the ejector pin 4 downward (upward) for multiple branches of the grounding wire;

[0053] The above three functions are realized by adding a button at the bottom of the insulating operating rod for easy operation.

[0054] In the above Examples 1 and 2, according to the requirements of the safety regulations, the cross-sectional area of the grounding wire is not less than 25 mm 2 , and it is a multi-strand soft copper wire, and the outer sheath is a transparent soft insulator. Considering improving the connection between the grounding wire and the grounding head, in Example 2, the sheath at the connection between the grounding wire and the grounding head is a hard structure. The original grounding wire is divided into a vertical end and a horizontal end (physically isolated). The vertical end is connected to the grounding head (forming the "wire end"), and the horizontal end is connected to the grounding wire (forming the "grounding end"). The upper part of the vertical end uses a hard copper wire to connect to the grounding head through a nut, and the lower part of the vertical end is a vertically telescopic hard copper wire; the left side of the horizontal end is a hard copper wire welded to the soft copper wire, and the right side is a horizontally telescopic hard copper wire with a sleeve joint; through motor drive, the vertically telescopic hard copper wire at the lower part of the vertical end and the horizontally telescopic hard copper wire with a sleeve joint at the grounding end are physically connected and isolated.

[0055] In addition, in the embodiments of the present invention, for the 0.4 kV voltage level, it is one main line + four branches (with a neutral line added); for the 10 (20 kV), 35 kV (66 kV), and 110 kV voltage levels, it is one main line + three branches. All are applicable to the technical solutions of the embodiments of the present invention.

[0056] In summary, adopting the embodiments of the present invention can greatly protect the safety of maintenance personnel and greatly simplify the efficiency of installing and removing the grounding wire.

[0057] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, commodity or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, commodity or device comprising said element.

[0058] Each embodiment in this specification is described in a progressive manner. For the identical or similar parts among the embodiments, reference can be made to each other, and the differences between each embodiment and other embodiments are emphasized. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and reference can be made to the relevant parts of the method embodiment for the relevant content.

[0059] The above description is only for the embodiments of this document and is not intended to limit this document. For those skilled in the art, various changes and modifications can be made to this document. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this document shall be included within the scope of the claims of this document.

Claims

1. A maintenance grounding device for power transmission and distribution lines, characterized in that, Specifically include: An insulating operating rod, a grounding head detachably connected to the top of the insulating operating rod, a protective ring provided at the bottom of the insulating operating rod, and a grounding wire connected to the grounding head, wherein: An insulating operating rod motor is provided in the insulating operating rod, which is used to control the rotation and lifting or lowering of the lower end of the grounding head, assist the grounding head to be in close contact with or separated from the overhaul wire, and control the energization or power-off of the grounding wire motor; a first ejector pin and a second ejector pin are provided on the insulating operating rod motor; The insulating operating rod motor is specifically used for: when installing the grounding wire, rotating the first ejector pin upward to control the grounding head to be in close contact with the overhaul wire; after the grounding head is in close contact with the overhaul wire, pushing the second ejector pin upward to control the grounding wire motor to be energized with the power system; when removing the grounding wire, pushing the second ejector pin upward to control the grounding wire motor to be energized with the power system, after the grounding wire motor disconnects the three branches of the grounding wire simultaneously, pushing the second ejector pin downward to control the grounding wire motor to be powered off from the power system, and after power-off, rotating the first ejector pin downward to control the grounding head to be separated from the overhaul wire; Grounding wire motors are respectively provided in multiple branches of the grounding wire, which are used to control the connection or disconnection between the grounding end of the grounding wire and the overhaul wire end; A control module for controlling the insulating operating rod motor and the grounding wire motor is provided on the protective ring; A buckle is provided at the bottom of the grounding head, and a clamping head adapted to the buckle is provided at the top of the insulating operating rod, and the detachable connection between the grounding head and the insulating operating rod is realized through the buckle and the clamping head.

2. The device according to claim 1, characterized in that A horizontal movement grounding wire motor is respectively provided in multiple branches of the grounding wire, and a third ejector pin is respectively provided on each horizontal movement grounding wire motor; the horizontal movement grounding wire motor is specifically used for: after being energized with the power system, simultaneously pushing the third ejector pin in the horizontal direction with other horizontal movement grounding wire motors to control the three branches of the grounding wire to be connected simultaneously; after being energized with the power system again, simultaneously pushing the third ejector pin in the horizontal direction with other horizontal movement grounding wire motors to control the three branches of the grounding wire to be disconnected simultaneously.

3. The device according to claim 2, characterized in that, The control module specifically includes: a control chip, and a first control button, a second control button, and a third control button connected to the control chip, wherein: The control chip is used for: when installing the grounding wire, in response to the user's operation on the first control button, controlling the insulating operating rod motor to start rotating the first thimble upward; after the three grounding heads are installed, in response to the user's operation on the second control button, controlling the insulating operating rod motor to start pushing the second thimble upward, and in response to the user's operation on the third control button, controlling the horizontal moving grounding wire motor to start pushing the third thimble in the horizontal direction; when removing the grounding wire, in response to the user's operation on the second control button again, controlling the insulating operating rod motor to start pushing the second thimble upward, in response to the user's operation on the third control button, controlling the horizontal moving grounding wire motor to start pushing the third thimble in the horizontal direction, and in response to the user's operation on the first control button again, controlling the insulating operating rod motor to start rotating the first thimble downward to separate the grounding head from the maintenance wire.

4. The device according to claim 1, characterized in that, One horizontal moving grounding wire motor and one vertical moving grounding wire motor are respectively arranged in multiple branches of the grounding wire, one third thimble is respectively arranged on each horizontal moving grounding wire motor, and one fourth thimble is respectively arranged on each vertical moving grounding wire motor; The horizontal moving grounding wire motor is specifically used for: after being powered on with the power system, pushing the third thimble in the horizontal direction simultaneously with other horizontal moving grounding wire motors to control the three branches of the grounding wire to be connected simultaneously; after being powered on with the power system again, pushing the third thimble in the horizontal direction simultaneously with other horizontal moving grounding wire motors to control the three branches of the grounding wire to be disconnected simultaneously; The vertical moving grounding wire motor is specifically used for: after being powered on with the power system, pushing the fourth thimble in the vertical direction simultaneously with other vertical moving grounding wire motors to control the three branches of the grounding wire to be connected simultaneously; after being powered on with the power system again, pushing the fourth thimble in the vertical direction simultaneously with other vertical moving grounding wire motors to control the three branches of the grounding wire to be disconnected simultaneously.

5. The device according to claim 4, characterized in that, The control module specifically includes: a control chip, and a first control button, a second control button, and a third control button connected to the control chip, where: The control chip is used for: when installing the grounding wire, in response to the user's operation on the first control button, controlling the insulating operating rod motor to start rotating the first thimble upward; after the three grounding heads are installed, in response to the user's operation on the second control button, controlling the insulating operating rod motor to start pushing the second thimble upward, and in response to the user's operation on the third control button, controlling the horizontal moving grounding wire motor to start pushing the third thimble in the horizontal direction and controlling the vertical moving grounding wire motor to start pushing the fourth thimble in the vertical direction; when removing the grounding wire, in response to the user's operation on the second control button again, controlling the insulating operating rod motor to start pushing the second thimble upward, and in response to the user's operation on the third control button, controlling the horizontal moving grounding wire motor to start pushing the third thimble in the horizontal direction and controlling the vertical moving grounding wire motor to start pushing the fourth thimble in the vertical direction, and in response to the user's operation on the first control button again, controlling the insulating operating rod motor to start rotating the first thimble downward to separate the grounding head from the maintenance wire.

6. The device according to claim 1, wherein The device is used for the maintenance of power transmission and distribution lines of 110 kV and below; the cross-sectional area of the grounding wire is not less than 25 mm 2 , and it is a multi-strand flexible copper wire, and the outer sheath is a transparent soft insulator.

7. The device according to claim 2, characterized in that, The sheath provided at the connection between the grounding wire and the grounding head is of a rigid structure. The upper part of the vertical end of the grounding wire is connected to the grounding head by a hard copper wire through a nut, and the lower part of the vertical end is a left - right telescopic hard copper wire; the horizontal end of the grounding wire is a sleeve joint connected to a soft copper wire; the horizontal moving grounding wire motor is driven to physically connect and isolate the telescopic hard copper wire at the lower part of the vertical end from the grounding end sleeve joint.

8. The device according to claim 4, characterized in that, The sheath provided at the connection between the grounding wire and the grounding head is of a rigid structure. The upper part of the vertical end of the grounding wire is connected to the grounding head by a hard copper wire through a nut, and the lower part of the vertical end is an up - down telescopic hard copper wire; the left side of the horizontal end of the grounding wire is a hard copper wire and a soft copper wire connected by welding, and the right side of the horizontal end is a left - right telescopic hard copper wire with a sleeve joint; the horizontal moving grounding wire motor and the vertical moving grounding wire motor are driven to physically connect and isolate the up - down telescopic hard copper wire at the lower part of the vertical end from the left - right telescopic hard copper wire of the grounding end sleeve joint.

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