An automatic wiring device for overhead ground wire melting ice

Abstract

The present invention belongs to the technical field of deicing of overhead ground wires, and discloses an automatic deicing wiring device for deicing overhead ground wires, including a lifting system and a wiring system, wherein the lifting system includes a driving component, a telescopic component and a control switch, wherein the driving component and the control switch are electrically connected, the telescopic component is connected to the driving component, and the control switch can control the telescopic component to stop; the wiring system includes an electrical connection component and a ground connection line, wherein the electrical connection component includes a static contact and a moving contact, the static contact is electrically connected to a current collector, the moving contact is fixed to the telescopic component, and the ground connection line is connected between the moving contact and the overhead ground wire, and when the driving component drives the telescopic component to extend until the moving contact and the static contact are in contact, the control switch is triggered, and when the control switch is triggered, the driving component can be controlled to stop moving. The automatic deicing wiring device for deicing overhead ground wires adopts a telescopic motion mode, and there is no rotating and deceleration component in the process of opening and closing the switch, and the structure is simple and reliable, and the wiring accuracy is high.

Description

Technical Field

[0001] The invention relates to the technical field, and in particular to an automatic wiring device for melting ice of an overhead ground wire. Background Art

[0002] High-voltage transmission lines usually refer to transmission lines that transmit voltages above 110kV. In cities, high-voltage transmission is generally transmitted underground using cables with insulation layers, and in the wild, it is often transmitted using overhead lines carried by iron towers. When overhead lines in the wild pass through areas where ice, snow or freezing rain often occur, they are often adversely affected, and the probability of line icing is very high. Line icing refers to the situation where all wires within a range are covered with ice. Cold raindrops fall on objects with a temperature below freezing to form rime. If condensation occurs on wires, the wires will be covered with ice.

[0003] The mechanical load of high-voltage transmission lines increases with the increase of ice coverage. The weight of ice on wires, insulator strings and towers, as well as the wind pressure increased by the increase in wind-exposed area after ice coverage. When the combined load of ice and wind exceeds the allowable value of the strength of the above components, the line will be damaged. Affected by factors such as terrain, landforms, wind direction and wind force, the ice coverage of wires on both sides of the line tower may be uneven. When the ice and snow melt, due to the difference in conditions such as rising temperature and wind vibration, the ice on both sides will also fall off at different times. When the load caused by uneven ice coverage and different periods of ice shedding on the line appears in a certain unfavorable combination, the tower will be damaged by large torque and bending moment. The unbalanced tension caused by uneven ice coverage can also cause the wires to break or even be pulled apart at the wire clamp, resulting in the risk of broken wires and tower collapse. In addition, the overload of ice on the conductors and ground wires, the change of arc sag caused by uneven ice coverage and different periods of ice shedding, and the reduction of the distance between the conductors and the ground wires and the reduction of the clearance distance between the conductors and the ground or cross-over objects, which causes discharge, are also accidents of reduced insulation strength. Special types of movement, such as the dancing of ice-covered conductors and the jumping of ice-shedding conductors, often cause accidents such as damage to line components and breakdown of insulation gaps.

[0004] Overhead ground wires refer to wires that are directly connected to the earth on high-voltage and ultra-high-voltage transmission lines. Due to the shielding of overhead ground wires on the wires and the coupling between the wires and overhead ground wires, the chance of lightning directly striking the wires can be reduced. Overhead ground wires have a small wire diameter and are more likely to break when covered with ice, falling onto the transmission line below, causing line faults and power outages. There is no special ice melting circuit for overhead ground wires above transmission lines, so ice melting of overhead ground wires is crucial.

[0005] DC de-icing mainly applies DC voltage to the transmission line and short-circuits the end of the transmission line to heat the conductor to melt the ice of the transmission line, thereby preventing the line from collapsing and breaking due to ice. DC de-icing technology is advanced and does not require a large load, generally only 10,000 to 20,000 kilowatts, and the DC output voltage is adjustable. It can be used to melt ice for single lines of different lengths within a certain range. It is no longer necessary to connect the lines in series. The operation is relatively simple, providing a simpler way for de-icing the lines. At present, the more mature automatic de-icing technology for high-voltage transmission lines is to increase the current in the conductor to exceed the working current, causing the conductor to heat up, so that the ice, snow, rime, etc. attached to the conductor melt and fall off, achieving the purpose of removing them. The current overhead ground wire de-icing connection needs to rely on manual climbing of the wire tower, which has high safety risks and low efficiency. In addition, the existing ground wire de-icing device is mainly mechanical rotary, with complex structure, large size, high cost, low closing accuracy, certain operating risks, and great difficulty in operation and maintenance.

[0006] Therefore, there is an urgent need for an overhead ground wire ice melting automatic wiring device to solve the above problems. Summary of the invention

[0007] The object of the present invention is to provide an overhead ground wire ice-melting automatic wiring device, which can safely and reliably realize the overhead ground wire ice-melting automatic wiring, while reducing the construction cost and operation and maintenance cost.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] An automatic wiring device for melting ice of an overhead ground wire comprises a lifting system and a wiring system, wherein the lifting system comprises a driving component, a telescopic component and a control switch, wherein the driving component and the control switch are electrically connected, the telescopic component is connected to the driving component, and the control switch can control the telescopic component to stop; the wiring system comprises an electrical connection component and a ground wire connection line, wherein the electrical connection component comprises a static contact and a moving contact, the static contact is electrically connected to a bus collector, the moving contact is fixedly connected to the telescopic component, and the ground wire connection line is connected between the moving contact and the overhead ground wire, and when the driving component drives the telescopic component to extend until the moving contact and the static contact are in contact, the control switch is triggered, and when the control switch is triggered, the driving component can be controlled to stop moving.

[0010] Optionally, the control switch includes a limit plate, a switch assembly and a pull rope, wherein two ends of the pull rope are respectively connected to the limit plate and the telescopic assembly, and the switch assembly is electrically connected to the drive assembly. When the telescopic assembly is extended, the limit plate can be driven toward the switch assembly through the pull rope. When the moving contact and the static contact are in contact, the limit plate abuts against and triggers the switch assembly. When the switch assembly is triggered, the drive assembly can be controlled to stop moving.

[0011] Optionally, the telescopic assembly includes a telescopic rod portion and an insulating rod portion, the wiring system also includes a conductive element, the telescopic rod portion includes a fixed end and a telescopic end, the fixed end is fixedly connected to the output end of the driving assembly, the insulating rod portion is fixedly connected to the telescopic end, the conductive element is fixedly connected to the insulating rod portion, and the moving contact and the ground wire connection wire are both connected to the conductive element.

[0012] Optionally, the wiring system further comprises a rotating member, the rotating member is rotatably connected to the conductive element, and the ground connection line is connected to the rotating member.

[0013] Optionally, the wiring system further comprises a stationary contact fixing component and a stationary contact protection cover, the stationary contact fixing component is mounted on the bus collector, the stationary contact is mounted on the stationary contact fixing component, and the stationary contact protection cover is provided on the stationary contact.

[0014] Optionally, the stationary contact protection cover comprises a first protection shell and a second protection shell which are rotatably connected, the first protection shell and the second protection shell are buckled with each other to form a protection cavity, and the stationary contact is located in the protection cavity.

[0015] Optionally, the wiring system further includes a lever, which is fixedly connected to the telescopic assembly and located on a side of the moving contact away from the driving assembly. When the telescopic assembly is extended, the lever can move the first protective shell and the second protective shell before the moving contact.

[0016] Optionally, the lifting system also includes an outer shell and a partition plate mounted in the inner cavity of the outer shell, the partition plate divides the inner cavity of the outer shell into a power supply area and a telescopic action area, the driving assembly is installed in the power supply area, and the telescopic assembly and the control switch are installed in the telescopic action area.

[0017] Optionally, the overhead ground wire ice-melting automatic wiring device also includes a wire take-up device, which is rotatably connected to the cross arm of the tower, one end of the ground wire connecting wire is connected to the moving contact, and the other end is connected to the overhead ground wire, and the middle part is wound around the wire take-up device.

[0018] Optionally, the overhead ground wire ice-melting automatic wiring device also includes a conductor wheel, which is rotatably connected to the tower crossarm. When the telescopic assembly is retracted to the telescopic action area, the ground wire connection line is wound around the conductor wheel.

[0019] Beneficial effects of the present invention:

[0020] The automatic wiring device for melting ice of overhead ground wires provided by the present invention comprises a lifting system and a wiring system, wherein the lifting system comprises a driving assembly, a telescopic assembly and a control switch. The driving assembly and the control switch are electrically connected, the telescopic assembly is connected to the driving assembly, and the control switch can control the telescopic assembly to stop. The wiring system comprises an electrical connection assembly and a ground wire connection line, the static contact of the electrical connection assembly is electrically connected to the bus collector, the moving contact is fixed to the telescopic assembly, and can follow the telescopic assembly to approach or move away from the static contact, the ground wire connection line is connected between the moving contact and the overhead ground wire, and when the moving contact and the static contact are in contact, the overhead ground wire is connected to the bus collector, and the automatic wiring of the melting ice of the overhead ground wire is completed. The automatic wiring device for melting ice of the overhead ground wire adopts a telescopic motion mode, and there are no rotating and deceleration components in the process of opening and closing the switch, the structure is simple and reliable, and the wiring accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the initial state structure of the overhead ground wire ice melting automatic wiring device provided by an embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the wiring state structure of the overhead ground wire ice melting automatic wiring device provided by an embodiment of the present invention;

[0023] Figure 3 yes Figure 1 The enlarged view of the structure marked as A in the middle structure;

[0024] Figure 4 yes Figure 2 A magnified view of the structure labeled B.

[0025] In the figure:

[0026] 100, lifting system; 110, housing; 120, drive assembly; 121, hydraulic pump; 122, hydraulic cylinder; 123, hydraulic oil pipe; 130, telescopic assembly; 131, telescopic rod; 132, insulating rod; 140, control switch; 141, limit plate; 142, switch assembly; 143, pull rope; 144, pull rope connecting rod; 145, pull rope retracting wheel; 150, partition plate;

[0027] 200, wiring system; 210, electrical connection assembly; 211, static contact; 212, moving contact; 220, ground connection wire; 230, conductive element; 240, rotating member; 250, static contact fixing member; 260, static contact protection cover; 270, lever; 280, fixing pipe fitting;

[0028] 300, wire take-up device;

[0029] 400. Wire reel. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] Embodiment 1

[0035] Figure 1 The schematic diagram of the initial state structure of the overhead ground wire ice melting automatic wiring device provided by the embodiment of the present invention is shown. Figure 2 The figure shows the wiring state structure diagram of the overhead ground wire ice melting automatic wiring device provided by the embodiment of the present invention. Figure 1 and Figure 2 The overhead ground wire ice melting automatic wiring device provided in this embodiment includes a lifting system 100, a wiring system 200 and a wire take-up device 300.

[0036] Figure 3 Show Figure 1 A magnified view of the structure marked as A. Figure 1 and Figure 3 The lifting system 100 includes a housing 110, a driving assembly 120, a telescopic assembly 130, a control switch 140 and a partition plate 150. The housing 110 is installed on the cross arm of the iron tower, and the partition plate 150 is erected in the inner cavity of the housing 110 to divide the inner cavity of the housing 110 into an energy supply area and a telescopic action area. The driving assembly 120 is installed in the energy supply area, and the telescopic assembly 130 and the control switch 140 are installed in the telescopic action area. The driving assembly 120 and the control switch 140 are electrically connected, the telescopic assembly 130 is connected to the driving assembly 120, and the control switch 140 can control the telescopic assembly 130 to stop.

[0037] Specifically, the driving assembly 120 includes a hydraulic pump 121, a hydraulic cylinder 122, and a hydraulic oil pipe 123. The hydraulic pump 121, the hydraulic cylinder 122, and the hydraulic oil pipe 123 are all installed on the partition plate 150, located in the energy supply area of ​​the housing 110. The hydraulic pump 121 is electrically connected to the control switch 140, and can drive the hydraulic cylinder 122 to move through the hydraulic oil pipe 123. The telescopic assembly 130 is connected to the hydraulic cylinder 122. When the hydraulic cylinder 122 moves, it can drive the telescopic assembly 130 to telescope.

[0038] Specifically, the telescopic assembly 130 includes a telescopic rod 131 and an insulating rod 132. The telescopic rod 131 includes a fixed end and a telescopic end. The fixed end is fixedly connected to the output end of the driving assembly 120, and the insulating rod 132 is fixedly connected to the telescopic end. A portion of the wiring system 200 is fixedly connected to one end of the insulating rod 132 away from the telescopic rod 131. The wiring system 200 can realize automatic connection of the ground wire through the telescopic movement of the telescopic assembly 130, such as Figure 2 In this embodiment, the hydraulic cylinder 122 and the telescopic rod 131 are specifically matched with an existing telescopic hydraulic cylinder.

[0039] More specifically, the control switch 140 includes a limit plate 141, a switch assembly 142, a pull rope 143, a pull rope connecting rod 144 and a pull rope retracting wheel 145. The control switch 140 is located in the telescopic action area, and the switch assembly 142 is installed in the hanging frame below the partition plate 150. The pull rope connecting rod 144 is fixedly connected to the telescopic rod 131, and its installation position is close to the insulating rod 132. The two ends of the pull rope 143 are respectively connected to the limit plate 141 and one end of the pull rope connecting rod 144, and the middle part is wound in the pull rope retracting wheel 145. The pull rope retracting wheel 145 is hung on the lower side of the hanging frame, and the pull rope 143 between the pull rope retracting wheel 145 and the pull rope connecting rod 144 can be retracted under the action of the elastic reset member. The switch assembly 142 is electrically connected to the hydraulic pump 121. When the telescopic rod 131 of the telescopic assembly 130 is extended, the limit plate 141 can be driven to move toward the switch assembly 142 through the pull rope 143. The length of the pull rope 143 is designed so that when the telescopic rod 131 is extended to the wiring system 200 to connect the ground circuit, the limit plate 141 can be pulled to abut against and trigger the switch assembly 142. When the switch assembly 142 is triggered, the drive assembly 120 can be controlled to stop moving.

[0040] Figure 4 Show Figure 2 The structure in the figure is marked as B. Figure 2-Figure 4 The wiring system 200 of the overhead ground wire de-icing automatic wiring device provided in this embodiment includes an electrical connection assembly 210, a ground wire connection line 220, a conductive element 230, and a static contact fixing component 250. A portion of the electrical connection assembly 210 is connected to the telescopic assembly 130 through the conductive element 230, and the other portion is connected to the bus collector through the static contact fixing component 250. When the two portions of the electrical connection assembly 210 are in contact under the action of the telescopic assembly 130, the ground wire circuit can be controlled to be closed and connected, thereby realizing the connection of the automatic de-icing circuit. One end of the ground wire connection line 220 is connected to the conductive element 230, and the other end is connected to the overhead ground wire.

[0041] Specifically, the electrical connection assembly 210 includes a stationary contact 211 and a moving contact 212 . The stationary contact fixing component 250 is electrically connected to the bus collector, and the stationary contact 211 is fixedly connected to the upper end of the stationary contact fixing component 250 .

[0042] In order to simultaneously fix the moving contact 212 and the ground connection line 220 to the telescopic assembly 130, a fixing pipe 280 is fixedly connected to one end of the insulating rod 132 away from the telescopic rod 131, and the conductive element 230 is vertically fixedly connected to the fixing pipe 280. With the fixing pipe 280 as a boundary, the moving contact 212 is connected to one side of the conductive element 230, and the ground connection line 220 is connected to the other side of the conductive element 230.

[0043] To be more specific, the ground connection line 220 is connected between the moving contact 212 and the overhead ground wire. When the driving component 120 drives the telescopic component 130 to extend until the moving contact 212 and the static contact 211 are in contact, the control switch 140 is triggered. When the control switch 140 is triggered, the driving component 120 can be controlled to stop moving. At this time, the telescopic component 130 stops extending, the static contact 211 and the moving contact 212 remain in contact, and the automatic ice-melting circuit is continuously connected.

[0044] Preferably, the wiring system 200 further includes a rotating member 240, which is rotatably connected to a side of the conductive element 230 away from the movable contact 212, and the ground connection line 220 is connected to the rotating member 240. The rotating member 240 can rotate automatically according to the angle change of the ground connection line 220, so that the ground connection line 220 is always in a straightened state, thereby avoiding the ground connection line 220 from having a crease at the connection with the conductive element 230.

[0045] Preferably, the wiring system 200 further includes a static contact protection cover 260. The static contact 211 is mounted on the static contact fixing component 250. The static contact protection cover 260 covers the static contact 211 to protect the static contact 211 from corrosion caused by wind and snow.

[0046] Specifically, the static contact protection cover 260 includes a first protection shell and a second protection shell that are rotatably connected, the first protection shell and the second protection shell are buckled together to form a protection cavity, and the static contact 211 is located in the protection cavity. The positions of the openings of the first protection shell and the second protection shell are directly opposite to the straight line direction of the moving contact 212 falling.

[0047] More specifically, the wiring system 200 further includes a lever 270, which is fixedly connected to the fixed pipe 280 and is located on the side of the moving contact 212 away from the driving assembly 120. When the telescopic assembly 130 is extended, the lever 270 can be inserted into the opening between the first protective shell and the second protective shell before the moving contact 212, and the first protective shell and the second protective shell are pushed apart, so as to facilitate the moving contact 212 to extend into the protective cavity and abut against the static contact 211, avoid frequent collisions between the moving contact 212 and the static contact protection cover 260, and extend the service life of the moving contact 212.

[0048] Reference Figure 1 and Figure 2The overhead ground wire de-icing automatic wiring device provided in this embodiment also includes a wire take-up device 300. The wire take-up device 300 is rotatably connected to the tower cross arm through the support insulator, and is insulated from the tower cross arm, and can withstand the voltage during DC de-icing, which is generally below 35kV. One end of the ground wire connection line 220 is connected to the moving contact 212, and the other end is connected to the overhead ground wire, and the middle part is wound on the wire take-up device 300. When the telescopic assembly 130 is extended, the ground wire connection line 220 wound on the wire take-up device 300 is gradually released, and the wire take-up device 300 has a coil spring return device, which can keep the ground wire connection line 220 in a straightened state at all times, and automatically rewind the ground wire connection line 220 when the telescopic assembly 130 is retracted.

[0049] Embodiment 2

[0050] The difference between this embodiment and the first embodiment is that the automatic wiring device for melting ice of overhead ground wires provided in this embodiment further includes a wire wheel 400. Figure 1-Figure 3 As shown. The conductor wheel 400 is rotatably connected to the tower cross arm and is located at the corner between the bottom of the side plate of the housing 110 and the tower cross arm. When the telescopic assembly 130 is retracted to the telescopic action area, the ground wire connection line 220 can be wound around the conductor wheel 400. The conductor wheel 400 can prevent the ground wire connection line 220 from turning and forming creases at the corner formed by the bottom of the housing 110 and the tower cross arm, and can make the winding of the ground wire connection line 220 more fluid after the telescopic assembly 130 is retracted to the telescopic action area.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An overhead ground wire ice melting automatic wiring device, characterized in that: include: A lifting system (100), comprising a driving assembly (120), a telescopic assembly (130) and a control switch (140), wherein the driving assembly (120) and the control switch (140) are electrically connected, the telescopic assembly (130) is connected to the driving assembly (120), and the control switch (140) is capable of controlling the telescopic assembly (130) to stop; A wiring system (200) comprises an electrical connection component (210) and a ground connection line (220), wherein the electrical connection component (210) comprises a stationary contact (211) and a moving contact (212), wherein the stationary contact (211) is electrically connected to a current collector, the moving contact (212) is fixedly connected to the telescopic component (130), and the ground connection line (220) is connected between the moving contact (212) and an overhead ground line, wherein when the drive component (120) drives the telescopic component (130) to extend until the moving contact (212) and the stationary contact (211) are in contact, the control switch (140) is triggered, and when the control switch (140) is triggered, the drive component (120) can be controlled to stop operating; The control switch (140) comprises a limit plate (141), a switch assembly (142) and a pull rope (143); two ends of the pull rope (143) are respectively connected to the limit plate (141) and the telescopic assembly (130); the switch assembly (142) is electrically connected to the drive assembly (120); when the telescopic assembly (130) is extended, the limit plate (141) can be driven by the pull rope (143) to move toward the switch assembly (142); when the moving contact (212) and the stationary contact (211) are in contact, the limit plate (141) abuts against and triggers the switch assembly (142); when the switch assembly (142) is triggered, the drive assembly (120) can be controlled to stop moving; The telescopic assembly (130) comprises a telescopic rod portion (131) and an insulating rod portion (132); the wiring system (200) further comprises a conductive element (230); the telescopic rod portion (131) comprises a fixed end and a telescopic end; the fixed end is fixedly connected to an output end of the drive assembly (120); the insulating rod portion (132) is fixedly connected to the telescopic end; the conductive element (230) is fixedly connected to the insulating rod portion (132); and the movable contact (212) and the ground connection line (220) are both connected to the conductive element (230); The driving assembly (120) comprises a hydraulic pump (121), a hydraulic cylinder (122) and a hydraulic oil pipe (123); the hydraulic pump (121) is electrically connected to the control switch (140) and can drive the hydraulic cylinder (122) to move via the hydraulic oil pipe (123); the telescopic assembly (130) is connected to the hydraulic cylinder (122) and can drive the telescopic assembly (130) to perform telescopic movement when the hydraulic cylinder (122) moves; The length of the pull rope (143) is designed so that when the telescopic rod (131) is extended to the wiring system (200) and the ground circuit is connected, the limit plate (141) can be pulled to abut against and trigger the switch assembly (142); when the switch assembly (142) is triggered, the drive assembly (120) can be controlled to stop moving.

2. The overhead ground wire ice melting automatic wiring device according to claim 1, characterized in that: The wiring system (200) further comprises a rotating member (240), wherein the rotating member (240) is rotatably connected to the conductive element (230), and the ground connection line (220) is connected to the rotating member (240).

3. The overhead ground wire ice melting automatic wiring device according to claim 1, characterized in that: The wiring system (200) further comprises a stationary contact fixing component (250) and a stationary contact protection cover (260); the stationary contact fixing component (250) is mounted on the current collector, the stationary contact (211) is mounted on the stationary contact fixing component (250), and the stationary contact protection cover (260) is provided to cover the stationary contact (211).

4. The overhead ground wire ice melting automatic wiring device according to claim 3, characterized in that: The stationary contact protection cover (260) comprises a first protection shell and a second protection shell which are rotatably connected, the first protection shell and the second protection shell being buckled with each other to form a protection cavity, and the stationary contact (211) is located in the protection cavity.

5. The overhead ground wire ice melting automatic wiring device according to claim 4, characterized in that: The wiring system (200) further comprises a lever (270), wherein the lever (270) is fixedly connected to the telescopic assembly (130) and is located on a side of the moving contact (212) facing away from the driving assembly (120); when the telescopic assembly (130) is extended, the lever (270) can move the first protective shell and the second protective shell before the moving contact (212).

6. The automatic wiring device for melting ice of overhead ground wire according to any one of claims 1 to 5, characterized in that: The lifting system (100) further comprises a housing (110) and a partition plate (150) mounted in the inner cavity of the housing (110), wherein the partition plate (150) divides the inner cavity of the housing (110) into a power supply area and a telescopic action area, the drive assembly (120) is installed in the power supply area, and the telescopic assembly (130) and the control switch (140) are installed in the telescopic action area.

7. The automatic wiring device for melting ice of overhead ground wire according to claim 6, characterized in that: It also includes a wire take-up device (300), the wire take-up device (300) being rotatably connected to the cross arm of the iron tower, one end of the ground wire connection wire (220) being connected to the moving contact (212), the other end being connected to the overhead ground wire, and the middle part being wound around the wire take-up device (300).

8. The automatic wiring device for melting ice of overhead ground wire according to claim 7, characterized in that: It also comprises a conductor wheel (400), the conductor wheel (400) being rotatably connected to the iron tower cross arm, and when the telescopic assembly (130) is retracted to the telescopic action area, the ground wire connection line (220) is wound around the conductor wheel (400).

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