Overhead line warning indicator

Abstract

The invention relates to an overhead line warning indicator. The overhead line warning indicator comprises a fixing ring, a sensing assembly and a warning unit. A mounting hole is defined in the inner circumferential side of the fixing ring, the cable is sleeved with the mounting hole, and the fixing ring is configured to induce a magnetic field when alternating current passes through the cable; the induction assembly comprises an induction coil, and the induction coil is arranged in the mounting hole in a penetrating mode and spirally surrounds the fixing ring in the circumferential direction of the fixing ring so as to induce current under the action of a magnetic field; and the warning unit is electrically connected with the induction coil and is used for warning. When alternating current passes through the cable, the fixed ring induces a magnetic field, and the induction coil spirally surrounds the fixed ring in the circumferential direction of the fixed ring, so that the induction coil induces current under the action of the magnetic field to supply power to the warning unit so as to carry out warning, namely, an additional power supply is not needed; power supply is achieved only through cooperation of the fixing ring, the induction coil and the cable, the weight and the size of the overhead line warning indicator are reduced, and the reliability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of road safety facilities, in particular to an overhead line warning device. Background Art

[0002] With the development of the electric power industry and urban and rural highway construction, overhead power transmission and distribution lines are widely distributed on urban and rural highways. Long power transmission and distribution lines along the line usually cross highways, houses, construction sites, etc. Overhead line alarms are markers installed on overhead transmission lines for transmission line warning. Through the warning function of the alarm, it reminds people to pay attention to the overhead lines. It is used to prevent external damage to medium and low voltage overhead lines in urban areas, thereby reducing the occurrence of power grid safety accidents. In the prior art, power overhead line alarms generally use solar energy as energy. However, the setting of solar panels will cause the overall volume and weight to be large. Installing them on cables will have a certain impact on sag. In windy weather, it will aggravate the swing of the cable. At the same time, there is a certain risk of falling, which brings safety hazards to vehicles passing by. Summary of the invention

[0003] Based on this, it is necessary to provide an overhead line warning device for power overhead lines that generally use solar energy as energy in the prior art. However, the setting of solar panels will cause the overall volume and weight to be large. Installing them on cables will have a certain impact on sag. In windy weather, the cable swing will be aggravated. At the same time, there is a certain risk of falling, which poses a safety hazard to passing vehicles.

[0004] An overhead line warning device, comprising:

[0005] A fixing ring, wherein an inner circumference of the fixing ring defines a mounting hole, the mounting hole is used to be sleeved on the cable, and the fixing ring is configured to induce a magnetic field when an alternating current passes through the cable;

[0006] an induction component, comprising an induction coil, wherein the induction coil is inserted into the mounting hole and spirally encircles a portion of the fixing ring in the circumferential direction of the fixing ring, so as to induce a current under the action of the magnetic field; and

[0007] The warning unit is electrically connected to the induction coil, and the warning unit is used for giving a warning.

[0008] In one embodiment, the induction component further includes a fixing frame, a portion of the fixing frame is passed through the mounting hole and is sleeved with a portion of the fixing ring, and the induction coil is wound around the outer side of the fixing frame.

[0009] In one of the embodiments, the fixing ring is made of a Permalloy soft magnetic sheet material.

[0010] In one embodiment, the overhead line warning device includes an induction plate having a first end and a second end that are relatively arranged, the first end and the second end are detachably connected and partially overlap to form the fixed ring, and the induction coil is spirally wrapped around the induction plate.

[0011] In one embodiment, the overhead line alarm further includes a locking portion, the locking portion having a fastening hole, the first end and the second end being able to move relative to each other, an overlapping area between the first end and the second end being accommodated in the fastening hole, and a hole wall of the fastening hole abutting against the first end and the second end to crimp the first end and the second end.

[0012] In one of the embodiments, the overhead line alarm further includes an anti-slip sleeve, wherein the anti-slip sleeve partially extends into the mounting hole and is sleeved on a partial ring segment of the fixing ring, and the anti-slip sleeve is used to elastically abut against the cable.

[0013] In one of the embodiments, the warning unit includes a warning light, which is electrically connected to the induction coil and is used to emit light for warning.

[0014] In one embodiment, the overhead line alarm further includes a processor, the processor is electrically connected to the induction coil, the alarm unit includes a first lamp bead and a second lamp bead, the first lamp bead and the second lamp bead are used to emit light of different colors, the first lamp bead and the second lamp bead are both electrically connected to the induction coil and the processor, and the processor is used to control the first lamp bead and the second lamp bead to emit light alternately.

[0015] In one embodiment, the overhead line alarm further includes a protective shell, the protective shell is configured with a accommodating cavity, a portion of the protective shell is passed through the mounting hole, and is sleeved on a partial ring segment of the fixing ring and connected to the fixing ring, the sensing component and the alarm unit are accommodated in the accommodating cavity, and a side of the protective shell facing away from the cable is at least partially translucent to allow light emitted by the alarm unit to pass through.

[0016] In one embodiment, the overhead line warning device also includes a cleaning component, which includes a driving member, a driving rod and a scraper arm. The driving member is accommodated in the accommodating cavity, and the protective shell has a connecting hole connected to the accommodating cavity. The scraper arm abuts against the light-transmitting area of ​​the protective shell and is transmission-connected to the driving member through the driving rod. The driving member is electrically connected to the induction coil, and the driving member is used to drive the driving rod to drive the scraper arm to rotate so as to scratch the side of the light-transmitting area away from the protective shell.

[0017] Beneficial effects:

[0018] The overhead line alarm provided by the embodiment of the present invention includes: a fixing ring, an induction component and an alarm unit; the inner circumference of the fixing ring defines a mounting hole, the mounting hole is used to be sleeved on the cable, and the fixing ring is configured to induce a magnetic field when the cable passes through alternating current; the induction component includes an induction coil, the induction coil is passed through the mounting hole, and is spirally wrapped around the circumferential direction of the fixing ring around a part of the ring segment of the fixing ring to induce current under the action of the magnetic field; the alarm unit is electrically connected to the induction coil, and the alarm unit is used to give an alarm. In the present application, the fixing ring is fixed to the cable, and when the cable passes through alternating current, the fixing ring induces a magnetic field. Since the induction coil spirally wraps around the fixing ring around the fixing ring, the induction coil induces a current under the action of the magnetic field to power the alarm unit, so that the alarm unit gives an alarm, that is, in the present application, no additional power supply is required, and power supply is achieved only through the cooperation between the fixing ring, the induction coil and the cable, thereby reducing the weight and volume of the overhead line alarm and improving the reliability of the overhead line alarm. Among them, compared with the method of only passing alternating current through a cable through a fixed ring to generate an induced current, in the present application, the induction coil is spirally wrapped around the fixed ring in a circumferential direction, so that there are sufficient magnetic field lines passing through the induction coil, and by setting the number of turns of the induction coil spirally wrapped around the fixed ring, the magnetic induction intensity of the induction coil can be greatly increased, thereby increasing the magnetic flux of the induction coil, improving the induced electromotive force of the induction coil, and then being able to provide stable power supply to the warning unit, thereby improving the reliability of the overhead line warning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG. 1 is a schematic diagram of an overhead line alarm provided by an embodiment of the present invention.

[0020] FIG. 2 is a partial cross-sectional view of an overhead line warning device provided in one embodiment of the present invention.

[0021] FIG. 3 is a schematic diagram of the coordination between an overhead line alarm and a cable provided in one embodiment of the present invention.

[0022] FIG. 4 is a schematic diagram of an anti-slip sleeve in an overhead line warning device according to an embodiment of the present invention.

[0023] FIG. 5 is a partial schematic diagram of an overhead line alarm provided by an embodiment of the present invention.

[0024] Figure Number:

[0025] 100-fixing ring; 110-mounting hole; 120-first end; 130-second end; 200-induction component; 210-induction coil; 220-fixing frame; 221-fixing hole; 310-anti-slip sleeve; 311-anti-slip pattern; 312-matching hole; 320-locking part; 330-protective shell; 331-accommodating cavity; 332-shell body; 333-light-transmitting plate; 340-warning unit; 341-first lamp bead; 342-second lamp bead; 350-processor; 360-power storage module; 400-cleaning component; 410-driving member; 420-driving rod; 430-scraping arm; 440-connecting hole; 500-cable. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0032] Referring to FIG. 1 , FIG. 2 and FIG. 3 , FIG. 1 is a schematic diagram of an overhead line alarm provided by an embodiment of the present invention. FIG. 2 is a partial cross-sectional view of an overhead line alarm provided by an embodiment of the present invention. FIG. 3 is a schematic diagram of an overhead line alarm provided by an embodiment of the present invention in cooperation with a cable. An overhead line alarm provided by an embodiment of the present invention comprises a fixing ring 100 , a sensing component 200 and a warning unit 340 ; a mounting hole 110 is defined on the inner circumference of the fixing ring 100 , the mounting hole 110 is used to be sleeved on the cable 500 , and the fixing ring 100 is configured to induce a magnetic field when the cable 500 passes through the alternating current; the sensing component 200 comprises an induction coil 210 , the induction coil 210 is passed through the mounting hole 110 , and is spirally wound around a portion of the fixing ring 100 in the circumferential direction of the fixing ring 100 to induce a current under the action of the magnetic field; the warning unit 340 is electrically connected to the induction coil 210 , and the warning unit 340 is used to give a warning.

[0033] Specifically, in the present application, the fixing ring 100 is fixed on the cable 500. When the cable 500 passes through alternating current, a magnetic field will be excited in the space around the cable 500, and the magnetic lines of force will pass through the fixing ring 100, thereby generating an induced electromotive force in the fixing ring 100. Since the induction coil 210 is circumferentially spirally wrapped around the fixing ring 100, the magnetic lines of force generated by the fixing ring 100 pass through the induction coil 210, so that the induction coil 210 induces a current under the action of the magnetic field to power the warning unit 340, so that the warning unit 340 issues an alarm. That is, in the present application, there is no need to set up an additional power supply, and power supply is achieved only through the cooperation between the fixing ring 100, the induction coil 210 and the cable 500, thereby reducing the weight and volume of the overhead line alarm and improving the reliability of the overhead line alarm.

[0034] Compared with the method of only passing alternating current through the cable 500 through the fixed ring 100 to generate an induced current, in the present application, the induction coil 210 is spirally wound around the fixed ring 100 in the circumferential direction, so that there are sufficient magnetic lines of force passing through the induction coil 210, and by controlling the number of turns of the induction coil 210 spirally wound around the fixed ring 100, the magnetic induction intensity of the induction coil 210 can be greatly increased, thereby increasing the magnetic flux of the induction coil 210, improving the induced electromotive force of the induction coil 210, and then being able to provide stable power supply to the warning unit 340, thereby improving the reliability of the overhead line alarm.

[0035] 1 , 2 and 3 , in one embodiment, the induction assembly 200 further includes a fixing frame 220 , the fixing frame 220 is partially inserted into the mounting hole 110 and is sleeved with a portion of the fixing ring 100 , and the induction coil 210 is wound around the outer side of the fixing frame 220 .

[0036] Specifically, the fixing frame 220 has a fixing hole 221, and the fixing frame 220 is sleeved on the fixing ring 100 through the fixing hole 221. The fixing frame 220 can isolate the induction coil 210 and the fixing ring 100. At the same time, the fixing frame 220 is connected to the fixing ring 100, which can limit the sliding of the induction coil 210 relative to the fixing ring 100, so that the induction coil 210 is stably located at a preset position of the fixing ring 100, so as to provide stable power supply to the warning unit 340, thereby improving the reliability of the overhead line alarm. Among them, the setting of the fixing frame 220 facilitates the installation and removal of the induction coil 210 relative to the fixing ring 100, thereby improving convenience.

[0037] 1 , 2 and 3 , in one embodiment, the fixing ring 100 is made of a permalloy soft magnetic sheet material.

[0038] Specifically, the Permalloy soft magnetic sheet has ultra-high magnetic conductivity, which can increase the magnetic induction intensity of the fixing ring 100, thereby increasing the magnetic flux, increasing the induced electromotive force of the induction coil 210, and improving the reliability of the induction coil 210 supplying power to the warning unit 340.

[0039] Referring to Figures 1, 2 and 3, in one embodiment, the overhead line alarm includes an induction sheet having a first end 120 and a second end 130 that are relatively arranged. The first end 120 and the second end 130 are detachably connected and partially overlapped to form a fixed ring 100, and the induction coil 210 is spirally wrapped around the induction sheet.

[0040] Specifically, when the first end 120 and the second end 130 are separated, the cable 500 can be inserted into the mounting hole 110, and the first end 120 is connected to the second end 130, so that the fixing ring 100 is stably fixed on the cable 500, that is, the first end 120 and the second end 130 are detachably connected, so that the fixing ring 100 can be conveniently installed and removed relative to the cable 500, thereby improving the convenience of the fixing ring 100. Among them, the first end 120 and the second end 130 partially overlap, so as to ensure that the fixing ring 100 forms a loop, avoid the situation of magnetic leakage of the fixing ring 100, and improve the reliability of the overhead line alarm.

[0041] Referring to Figures 1, 2 and 3, in one embodiment, the overhead line alarm further includes a locking portion 320, the locking portion 320 has a fastening hole, the first end 120 and the second end 130 can move relative to each other, the overlapping area of ​​the first end 120 and the second end 130 is accommodated in the fastening hole, and the hole wall of the fastening hole abuts against the first end 120 and the second end 130 to crimp the first end 120 and the second end 130.

[0042] Specifically, the first end 120 and the second end 130 can move relative to each other, and the first end 120 and the second end 130 are crimped together by the locking portion 320, so that the aperture of the mounting hole 110 can be adjusted, so that the fixing ring 100 can be stably sleeved on the cable 500, and can adapt to cables 500 of different sizes, thereby improving the reliability and adaptability of the overhead line alarm. Preferably, the locking portion 320 is a retaining spring.

[0043] Referring to Figures 1, 3 and 4, Figure 4 is a schematic diagram of an anti-slip sleeve 310 in an overhead line alarm provided in an embodiment of the present invention. In one embodiment, the overhead line alarm further includes an anti-slip sleeve 310, the anti-slip sleeve 310 partially extends into the mounting hole 110, and is sleeved on a portion of the ring section of the fixing ring 100, and the anti-slip sleeve 310 is used to elastically abut against the cable 500.

[0044] Specifically, the anti-slip cover 310 is provided with a matching hole 312, and the induction sheet is passed through the matching hole 312. When the fixing ring 100 is sleeved on the cable 500, the anti-slip cover 310 elastically abuts against the cable 500, thereby increasing the friction between the cable 500 and the anti-slip cover 310, so that the movement of the fixing ring 100 relative to the cable 500 is restricted, so that the fixing ring 100 is stably fixed at a preset position of the cable 500, so as to ensure that the fixing ring 100 will not be displaced relative to the cable 500 in windy weather. Preferably, the anti-slip cover 310 is an anti-slip soft silicone strip.

[0045] Furthermore, the number of the anti-slip covers 310 is at least two, and the anti-slip covers 310 are disposed on both sides of the sensing component 200 .

[0046] Referring to FIG. 1 , FIG. 3 and FIG. 4 , in one embodiment, a plurality of anti-slip grooves 311 arranged at intervals are formed on the anti-slip sleeve 310 , and the anti-slip grooves 311 are used to abut against the cable 500 .

[0047] Specifically, the side of the anti-slip sleeve 310 facing the cable 500 is provided with a plurality of grooves, which are configured as anti-slip lines 311 to increase the friction between the anti-slip sleeve 310 and the cable 500 and improve the stability of the overhead line alarm installed on the cable 500. The grooves extend along the axial direction of the fixing ring 100.

[0048] It should be noted that the overhead line alarm can be installed at intervals according to the line segments of the cable 500 that need to be warned, and the installation interval can be flexibly set. The overhead line alarm can be installed at construction sites and on lines across roads and rivers. This can prevent accidental contact by ultra-high engineering machinery, vehicles, and ships that may cause damage to the line, power outages, and serious accidents. Overhead line alarms are installed on lines near rivers, lakes, and ponds to prevent electric shock accidents caused by anglers' fishing lines getting caught on the lines.

[0049] Referring to Figures 1, 2 and 3, in one embodiment, the warning unit 340 includes a warning light, which is electrically connected to the induction coil 210. The warning light is used to emit light for warning, so as to warn passers-by, vehicles, etc., to pay attention to the overhead cables 500 above, and to avoid excessive touching, which may cause casualties, economic losses, and power outages caused by touching the cables 500.

[0050] Referring to Figures 1, 2 and 3, in one embodiment, the overhead line warning device also includes a processor 350, which is electrically connected to the induction coil 210. The warning light includes a first lamp bead 341 and a second lamp bead 342. The first lamp bead 341 and the second lamp bead 342 are used to emit light of different colors. The first lamp bead 341 and the second lamp bead 342 are both electrically connected to the induction coil 210 and the processor 350. The processor 350 is used to control the first lamp bead 341 and the second lamp bead 342 to emit light alternately.

[0051] Specifically, the first lamp bead 341 and the second lamp bead 342 alternately emit light of different colors, which can improve the warning effect and avoid confusion with decorations such as lanterns, so as to warn passing people and vehicles to pay attention to the overhead cables 500 above and avoid excessive contact, resulting in casualties, economic losses, and power outages caused by contact with the cables 500. Among them, the first lamp bead 341 and the second lamp bead 342 alternately emit red and blue light, so that extremely high visibility can be guaranteed in different weather conditions, and the visible distance is far at night.

[0052] Furthermore, the overhead line alarm also includes a power storage module 360, which is connected to the processor 350. The power storage module 360 ​​is used to store the electric energy generated by the induction coil 210 and supply power to the first lamp bead 341 and the second lamp bead 342 to improve the reliability of power supply to the first lamp bead 341 and the second lamp bead 342.

[0053] Referring to Figures 1, 2, 3 and 5, Figure 5 is a partial schematic diagram of an overhead line alarm provided by an embodiment of the present invention. In one embodiment, the overhead line alarm further includes a protective shell 330, the protective shell 330 is configured with a receiving cavity 331, the protective shell 330 is partially penetrated through the mounting hole 110, and is sleeved on a partial ring segment of the fixing ring 100, and is connected to the fixing ring 100, the sensing component 200 and the alarm unit 340 are accommodated in the receiving cavity 331, and the side of the protective shell 330 facing away from the cable 500 is at least partially transparent to allow the light emitted by the alarm unit 340 to pass through.

[0054] Specifically, the protective shell 330 is passed through the induction sheet and connected to the induction sheet, and the induction coil 210 and the warning unit 340 are accommodated in the accommodating cavity 331, thereby protecting the induction coil 210 and the warning unit 340 and improving the safety of the overhead line alarm. Among them, the side of the protective shell 330 facing away from the cable 500 is at least partially transparent, so that the light emitted by the warning unit 340 can be transmitted from the accommodating cavity 331 to provide a warning.

[0055] Among them, the protective shell 330 is made of high molecular polymer, which has the characteristics of flame retardancy, UV protection, high temperature resistance and aging resistance. The inside is sealed with epoxy resin composite material, which has strong protective ability.

[0056] Furthermore, the protective shell 330 includes a shell body 332 and a light-transmitting plate 333 , the light-transmitting plate 333 is connected to the shell body 332 and is located on a side away from the cable 500 , and the first lamp bead 341 and the second lamp bead 342 correspond to the positions of the light-transmitting plate 333 .

[0057] Referring to Figures 1, 2, 3 and 5, in one embodiment, the overhead line warning device also includes a cleaning component 400, which includes a driving member 410, a driving rod 420 and a scraper arm 430. The driving member 410 is accommodated in the accommodating cavity 331, and the protective shell 330 has a connecting hole 440 connected to the accommodating cavity 331. The scraper arm 430 abuts against the light-transmitting area of ​​the protective shell 330 and is transmission-connected to the driving member 410 through the driving rod 420. The driving member 410 is electrically connected to the induction coil 210. The driving member 410 is used to drive the driving rod 420 to drive the scraper arm 430 to rotate, so as to scratch the side of the light-transmitting area away from the protective shell 330.

[0058] Specifically, the scraper arm 430 is located outside the protective shell 330 and abuts against the light-transmitting plate 333. The driving member 410 drives the driving rod 420 to drive the scraper arm 430 to rotate in a direction perpendicular to the plane where the light-transmitting plate 333 is located, so as to scrape the surface of the light-transmitting plate 333, thereby scraping off the dust or rain and snow on the light-transmitting plate 333, maintaining the display effect of the warning unit 340, and improving the reliability of the overhead line alarm. The driving member 410 is connected to the processor 350, and the processor 350 is used to control the timing of the driving member 410 to start. Preferably, the driving member 410 is a motor.

[0059] Furthermore, the overhead line alarm also includes an alarm, which is used to monitor the quality of the warning unit 340. When a problem occurs in the warning unit 340, the alarm will no longer flash, and the information will be transmitted to the computer through the alarm, so that the staff can understand the situation of the warning unit 340 in real time and perform maintenance in time.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An overhead line warning device, characterized in that: The overhead line warning device comprises: A fixing ring, wherein an inner circumference of the fixing ring defines a mounting hole, the mounting hole is used to be sleeved on the cable, and the fixing ring is configured to induce a magnetic field when an alternating current passes through the cable; an induction component, comprising an induction coil, wherein the induction coil is inserted into the mounting hole and spirally encircles a portion of the fixing ring in the circumferential direction of the fixing ring, so as to induce a current under the action of the magnetic field; and The warning unit is electrically connected to the induction coil, and the warning unit is used for giving a warning.

2. The overhead line warning device according to claim 1, characterized in that: The induction component also includes a fixing frame, a portion of the fixing frame is passed through the mounting hole and is sleeved with a portion of the ring segment of the fixing ring, and the induction coil is wound around the outer side of the fixing frame.

3. The overhead line warning device according to claim 1, characterized in that: The fixing ring is made of Permalloy soft magnetic sheet material.

4. The overhead line warning device according to claim 1, characterized in that: The overhead line warning device includes an induction sheet having a first end and a second end arranged opposite to each other, the first end and the second end are detachably connected and partially overlapped to form the fixed ring, and the induction coil is spirally wound around the induction sheet.

5. The overhead line warning device according to claim 4, characterized in that: The overhead line warning device also includes a locking portion, which has a fastening hole. The first end and the second end can move relative to each other, and the overlapping area of ​​the first end and the second end is accommodated in the fastening hole. The hole wall of the fastening hole abuts against the first end and the second end to crimp the first end and the second end.

6. The overhead line warning device according to claim 1, characterized in that: The overhead line warning device also includes an anti-slip sleeve, which partially extends into the mounting hole and is sleeved on a partial ring segment of the fixing ring. The anti-slip sleeve is used to elastically abut against the cable.

7. The overhead line warning device according to any one of claims 1 to 6, characterized in that: The warning unit comprises a warning light, which is electrically connected to the induction coil and is used to emit light for warning.

8. The overhead line warning device according to claim 7, characterized in that: The overhead line warning device also includes a processor, which is electrically connected to the induction coil. The warning light includes a first lamp bead and a second lamp bead, and the first lamp bead and the second lamp bead are used to emit light of different colors. The first lamp bead and the second lamp bead are both electrically connected to the induction coil and the processor, and the processor is used to control the first lamp bead and the second lamp bead to emit light alternately.

9. The overhead line warning device according to claim 7, characterized in that: The overhead line alarm also includes a protective shell, which is configured with a accommodating cavity. The protective shell is partially inserted into the mounting hole, and is sleeved on a partial ring segment of the fixing ring and connected to the fixing ring. The sensing component and the warning unit are accommodated in the accommodating cavity. The side of the protective shell facing away from the cable is at least partially translucent to allow the light emitted by the warning unit to pass through.

10. The overhead line warning device according to claim 9, characterized in that: The overhead line warning device also includes a cleaning component, which includes a driving member, a driving rod and a scraper arm. The driving member is accommodated in the accommodating cavity. The protective shell has a connecting hole connected to the accommodating cavity. The scraper arm abuts against the light-transmitting area of ​​the protective shell and is transmission-connected to the driving member through the driving rod. The driving member is electrically connected to the induction coil. The driving member is used to drive the driving rod to drive the scraper arm to rotate so as to scratch the side of the light-transmitting area away from the protective shell.

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