Cable marking device for fault location of distribution line and use method of cable marking device

Abstract

The invention discloses a cable marking device for power distribution line fault positioning, and belongs to the technical field of power distribution line fault positioning, the cable marking device for power distribution line fault positioning comprises a base, a climbing walking mechanism and a mark mounting mechanism, the climbing walking mechanism is used for walking along a high-altitude cable, and the mark mounting mechanism is used for mounting a mark. The marking and mounting mechanism is used for marking a high-altitude cable and positioning a distribution line fault, the climbing and walking mechanism and the marking and mounting mechanism are both arranged on the base, the device can be conveniently hung on the high-altitude cable through the climbing and walking mechanism and can walk along the high-altitude cable, the marking and mounting mechanism can be moved to a fault point, and the device is convenient to use. A buckle can be clamped at the position of a fault point through the marking installation mechanism, the distribution line fault is positioned through high-altitude cable marking, the climbing walking mechanism is matched with the marking installation mechanism to achieve accurate and continuous high-altitude marking, and the risk of manual installation is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution line fault location, and particularly to a cable marking device for distribution line fault location. Background Art

[0002] Distribution lines are a crucial part of the power system, and their stability and reliability are directly related to the quality and continuity of power supply. However, since distribution lines are usually distributed in complex urban or rural environments and are often subject to various external factors of interference and damage, faults occur frequently. When a fault occurs in a distribution line, quickly and accurately locating the fault point is crucial for restoring power supply and reducing losses.

[0003] Cable fault detection usually determines the fault location and type through methods such as visual inspection, voltage testing, insulation testing, sectional testing, and using professional instruments such as cable fault testers for ranging and pinpointing. Once the fault point is determined, methods such as label marking, color marking, digital marking, area marking, function marking, or terminal marking can be used to clearly and permanently mark the fault point and its related cables for subsequent repair and maintenance.

[0004] Some cables distributed on the ground or underground are relatively easy to detect fault points and mark, but the fault marking of aerial cables is more difficult. Manual marking is difficult and has a high risk factor, and it is impossible to accurately and continuously mark. Summary of the Invention

[0005] To solve the deficiencies in the prior art, the present invention provides a cable marking device for distribution line fault location to solve the technical problems of difficult aerial marking and inability to accurately and continuously mark in the prior art.

[0006] The present invention adopts the following technical solutions.

[0007] The first aspect of the present invention discloses a cable marking device for distribution line fault location, including: a base, a climbing and walking mechanism, and a marking installation mechanism. The climbing and walking mechanism is used to walk along the high-altitude cable, and the marking installation mechanism is used to mark the high-altitude cable to locate the distribution line fault. The climbing and walking mechanism and the marking installation mechanism are both arranged on the base. The climbing and walking mechanism includes: a first support rod, a second support rod, a third support rod, a fourth support rod rotatably connected to the base, a first pulley, a second pulley, a third pulley, and a fourth pulley. The first pulley is rotatably connected to the first support rod, the second pulley is rotatably connected to the second support rod, the third pulley is rotatably connected to the third support rod, and the fourth pulley is rotatably connected to the fourth support rod. The first pulley is connected to a second motor. The marking installation mechanism includes: a buckle, a storage part, and a driving part. The storage part is used to store the buckle, and the driving part is used to drive the buckle.

[0008] As an improvement, the second motor is connected to the first support rod, the output shaft of the second motor passes through the first support rod and is connected to the first pulley. The first pulley, the second pulley, the third pulley, and the fourth pulley are all frustum-shaped. The first pulley abuts against the second pulley, and the third pulley abuts against the fourth pulley. Friction strips are linearly arranged in a circle at one end where the first pulley and the second pulley are close to each other, and at one end where the third pulley and the fourth pulley are close to each other, for increasing the friction force.

[0009] As an improvement, a transmission shaft, a first motor, a first slider, and a second slider are provided on the base. The output shaft of the first motor is connected to the transmission shaft. The transmission shaft is provided with a first cam and a second cam respectively cooperating with the first slider and the second slider. A first connecting rod is provided between the first support rod and the first slider, a second connecting rod is provided between the second support rod and the first slider, a third connecting rod is provided between the third support rod and the second slider, and a fourth connecting rod is provided between the fourth support rod and the second slider.

[0010] As an improvement, the first slider and the second slider are both slidably connected to the base. The two ends of the first connecting rod are respectively rotatably connected to the first support rod and the first slider. The two ends of the second connecting rod are respectively rotatably connected to the second support rod and the second slider. The two ends of the third connecting rod are respectively rotatably connected to the third support rod and the second slider. The two ends of the fourth connecting rod are respectively rotatably connected to the fourth support rod and the second slider. The first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod are all inclined. The transmission shaft is rotatably connected to the base. A first return spring is provided between the first support rod and the second support rod, and a second return spring is provided between the third support rod and the fourth support rod.

[0011] As an improvement, the storage portion includes: a first support plate and a second support plate, the first support plate and the second support plate are both connected to the base, and the first support plate and the second support plate are each provided with a second clip on one side close to each other for guiding the buckle, and second grooves matching the second clip are provided on both sides of the buckle.

[0012] As an improvement, the second support plate includes: a latch, a first plate body and a second plate body, the first plate body is rotatably connected to the second plate body, the first plate body is connected to the base, a second clip is provided on one side of the second plate body close to the first support plate, a second placement seat is provided on one side of the second plate body, a first placement seat is provided on one side of the first plate body, and the latch passes through the first placement seat and the second placement seat.

[0013] As an improvement, a fourth motor is provided on the first support plate, the output shaft of the fourth motor is connected to a second screw rod, the second screw rod is rotatably connected to the first support plate, a toggle slider is threadedly connected to the second screw rod, the toggle slider passes through the first support plate and is slidably connected to the first support plate, and the toggle slider is used to push the buckle.

[0014] As an improvement, the driving part includes: a right-angle frame, a third motor, a first screw rod and a limiting spring sheet, the output shaft of the third motor is connected to the first screw rod, the first screw rod is threadedly connected to the right-angle frame, the right-angle frame is used to push the buckle, and the limiting spring sheet is located on both sides of the right-angle frame and connected to the base.

[0015] As an improvement, a counterweight block and a guide rod are provided on the base, and the guide rod passes through the right-angle frame and is slidably connected to the right-angle frame. A first clip is provided on one side of the two limiting spring plates close to each other, which is used to guide the buckle. First grooves matching the first clip are provided on both sides of the buckle. The third motor is connected to the base, and the first screw rod is rotatably connected to the base.

[0016] A second aspect of the present invention discloses a method for using a cable marking device for locating a distribution line fault, comprising the following steps:

[0017] Rotate the second plate body, place a plurality of buckles on one side of the first support plate, and rotate the second plate body back to the initial position;

[0018] Move the slider to push the buckle so that the buckle closest to the limit spring is between the two limit springs;

[0019] The first support rod and the second support rod rotate in directions away from each other, and the first pulley is disengaged from the second pulley; the third support rod and the fourth support rod rotate in directions away from each other, and the third pulley is disengaged from the fourth pulley;

[0020] Move the cable marking device for locating power distribution line faults to the bottom of the high-altitude cable, reset the first support rod and the second support rod, and abut the first pulley against the second pulley. Reset the third support rod and the fourth support rod, and abut the third pulley against the fourth pulley.

[0021] The first pulley, the second pulley, the third pulley, and the fourth pulley are all against the overhead cable, and the cable marking device for locating the fault of the power distribution line moves along the overhead cable;

[0022] When it moves to the fault point, the right-angle frame pushes the buckle at its top to move up until it is engaged with the aerial cable. The right-angle frame moves down to the initial position, and the slider is moved to push the buckle so that the buckle closest to the limiting spring piece is between the two limiting spring pieces. When the cable marking device for locating distribution line faults moves along the aerial cable to the next fault point, the above steps are repeated to engage the buckle at this position for precise and continuous aerial marking.

[0023] The beneficial effect of the present invention is that, compared with the prior art,

[0024] The present invention can conveniently hang the device on the high-altitude cable and walk along it through the climbing walking mechanism, and can move the marking installation mechanism to the fault point. The marking installation mechanism can be used to clip the buckle at the position of the fault point, and the distribution line fault can be located through the high-altitude cable marking. The climbing walking mechanism cooperates with the marking installation mechanism to achieve accurate and continuous high-altitude marking, reducing the risk of manual installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a first stereoscopic schematic diagram of the present invention;

[0026] Figure 2 It is a top view schematic diagram of the present invention;

[0027] Figure 3 It is a front view schematic diagram of the present invention;

[0028] Figure 4 It is a side view schematic diagram of the present invention;

[0029] Figure 5 is a second stereoscopic schematic diagram of the present invention;

[0030] Figure 6 It is a schematic diagram of the first pulley and the second pulley being separated, and the third pulley and the fourth pulley being separated according to the present invention;

[0031] Figure 7 It is a schematic diagram of the explosion of the present invention.

[0032] 1. High-altitude cables;

[0033] 2. Buckle;

[0034] 3. Right-angle bracket;

[0035] 4. Second pulley;

[0036] 5. First pulley;

[0037] 6. Second motor;

[0038] 7. Fourth pulley;

[0039] 8. Third pulley;

[0040] 9. Third support rod;

[0041] 10. Second return spring;

[0042] 11. Third connecting rod;

[0043] 12. Base;

[0044] 13. Transmission shaft;

[0045] 14. First connecting rod;

[0046] 15. Guide rod;

[0047] 16. Limit leaf spring;

[0048] 17. Second lead screw;

[0049] 18. Fourth motor;

[0050] 19. First plate body;

[0051] 20. Second plate body;

[0052] 21. Second clamping strip;

[0053] 22. First motor;

[0054] 23. First lead screw;

[0055] 24. Third motor;

[0056] 25. Plug pin;

[0057] 26. Pushing slider;

[0058] 27. Second placement seat;

[0059] 28. First placement seat;

[0060] 29. Counterweight;

[0061] 30. Second cam;

[0062] 31. Second slider. Detailed implementation manners

[0063] To make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described in this application are only a part of the embodiments of the present invention, rather than all embodiments. Based on the spirit of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0064] Embodiment 1

[0065] As Figure 1-7 shown:

[0066] A cable marking device for power distribution line fault location, comprising: a base 12, a climbing and walking mechanism, and a marking installation mechanism. The climbing and walking mechanism is used to walk along the high-altitude cable 1, and the marking installation mechanism is used to mark the high-altitude cable 1 to locate the power distribution line fault. Both the climbing and walking mechanism and the marking installation mechanism are arranged on the base 12. The climbing and walking mechanism includes: a first support rod, a second support rod, a third support rod 9, and a fourth support rod that are rotatably connected to the base 12, a first pulley 5, a second pulley 4, a third pulley 8, and a fourth pulley 7. The first pulley 5 is rotatably connected to the first support rod, the second pulley 4 is rotatably connected to the second support rod, the third pulley 8 is rotatably connected to the third support rod 9, and the fourth pulley 7 is rotatably connected to the fourth support rod. The first pulley 5 is connected to a second motor 6. The marking installation mechanism includes: a buckle 2, a storage part, and a driving part. The storage part is used to store the buckle 2, and the driving part is used to drive the buckle 2.

[0067] As Figure 1 shown:

[0068] In a preferred but non-limiting embodiment of the present invention, the second motor 6 is connected to the first support rod, and the output shaft of the second motor 6 passes through the first support rod and is connected to the first pulley 5. The first pulley 5, the second pulley 4, the third pulley 8, and the fourth pulley 7 are all frustum-shaped. The first pulley 5 abuts against the second pulley 4, and the third pulley 8 abuts against the fourth pulley 7. Friction strips are linearly arranged in a circumferential direction at the mutually approaching ends of the first pulley 5 and the second pulley 4, and at the mutually approaching ends of the third pulley 8 and the fourth pulley 7, for increasing the friction force.

[0069] As Figure 1 , Figure 2 shown:

[0070] In a preferred but non-limiting embodiment of the present invention, a transmission shaft 13, a first motor 22, a first slider, and a second slider 31 are provided on the base 12. The output shaft of the first motor 22 is connected to the transmission shaft 13. A first cam and a second cam 30 that cooperate with the first slider and the second slider 31 respectively are provided on the transmission shaft 13. A first connecting rod 14 is provided between the first support rod and the first slider. A second connecting rod is provided between the second support rod and the first slider. A third connecting rod 11 is provided between the third support rod 9 and the second slider 31. A fourth connecting rod is provided between the fourth support rod and the second slider 31.

[0071] As Figure 1 , Figure 4 shown:

[0072] In a preferred but non-limiting embodiment of the present invention, both the first slider and the second slider 31 are slidably connected to the base 12. Two ends of the first connecting rod 14 are respectively rotatably connected to the first support rod and the first slider. Two ends of the second connecting rod are respectively rotatably connected to the second support rod and the second slider 31. Two ends of the third connecting rod 11 are respectively rotatably connected to the third support rod 9 and the second slider 31. Two ends of the fourth connecting rod are respectively rotatably connected to the fourth support rod and the second slider 31. The first connecting rod 14, the second connecting rod, the third connecting rod 11, and the fourth connecting rod are all inclined. The transmission shaft 13 is rotatably connected to the base 12. A first return spring is provided between the first support rod and the second support rod. A second return spring 10 is provided between the third support rod 9 and the fourth support rod.

[0073] As Figure 1-3 shown:

[0074] In a preferred but non-limiting embodiment of the present invention, the storage part includes: a first support plate and a second support plate. Both the first support plate and the second support plate are connected to the base 12. Second card strips 21 are provided on the sides of the first support plate and the second support plate close to each other for guiding the buckle 2. Second grooves that cooperate with the second card strips 21 are provided on both sides of the buckle 2.

[0075] As Figure 1 , Figure 5 shown:

[0076] In a preferred but non-limiting embodiment of the present invention, the second support plate includes: a pin 25, a first plate body 19, and a second plate body 20. The first plate body 19 is rotatably connected to the second plate body 20. The first plate body 19 is connected to the base 12. A second card strip 21 is provided on the side of the second plate body 20 close to the first support plate. A second placement seat 27 is provided on one side of the second plate body 20. A first placement seat 28 is provided on one side of the first plate body 19. The pin 25 passes through the first placement seat 28 and the second placement seat 27.

[0077] like Figure 1-3 As shown:

[0078] In a preferred but non-limiting embodiment of the present invention, a fourth motor 18 is provided on the first support plate, and the output shaft of the fourth motor 18 is connected to a second screw rod 17, and the second screw rod 17 is rotatably connected to the first support plate. A toggle slider 26 is threadedly connected to the second screw rod 17, and the toggle slider 26 passes through the first support plate and is slidably connected to the first support plate, and the toggle slider 26 is used to push the buckle 2.

[0079] like Figure 3 As shown:

[0080] In a preferred but non-restrictive embodiment of the present invention, the driving part includes: a right-angle frame 3, a third motor, a first screw rod 23 and a limiting spring piece 16, the output shaft of the third motor is connected to the first screw rod 23, the first screw rod 23 is threadedly connected to the right-angle frame 3, the right-angle frame 3 is used to push the buckle 2, and the limiting spring piece 16 is located on both sides of the right-angle frame 3 and is connected to the base 12.

[0081] like Figure 1 As shown:

[0082] In a preferred but non-restrictive embodiment of the present invention, a counterweight block 29 and a guide rod 15 are provided on the base 12. The guide rod 15 passes through the right-angle frame 3 and is slidably connected to the right-angle frame 3. The two limiting spring pieces 16 are provided with a first clip on one side close to each other for guiding the buckle 2. First grooves matching the first clip on both sides of the buckle 2 are provided. The third motor is connected to the base 12, and the first screw rod 23 is rotatably connected to the base 12.

[0083] In a preferred but non-limiting embodiment of the present invention, the first motor 22, the second motor 6, the third motor, and the fourth motor 18 are all electrically connected to a controller, and the controller is electrically connected to a battery.

[0084] Example 2

[0085] A method for using a cable marking device for locating a distribution line fault comprises the following steps:

[0086] Lift the latch 25 to disengage it from the first placement seat 28 and the second placement seat 27, rotate the second plate body 20 around the connection point between it and the first plate body 19 to the side away from the first support plate, increase the distance between the second clip 21 on the second plate body 20 and the second clip 21 on the first support plate, place a plurality of buckles 2 on one side of the first support plate and make the second clip 21 on the first support plate snap into the second groove, rotate the second plate body 20 back to the initial position, snap the second clip 21 on the second plate body 20 into the second groove, and insert the latch 25 back to the initial position to pass through the first placement seat 28 and the second placement seat 27;

[0087] The fourth motor 18 drives the second screw rod 17 to rotate a certain angle, and the second screw rod 17 drives the toggle slider 26 to move along the first support plate and push the buckle 2 so that the buckle 2 closest to the limiting spring sheet 16 is located between the two limiting spring sheets 16, the first clamping strip is clamped into the first groove, the right angle frame 3 is located below the buckle 2, and the two limiting spring sheets 16 are first squeezed and bent by the first clamping strip. When the first clamping strip is clamped into the first groove, the two limiting spring sheets 16 return to their original state;

[0088] The first motor 22 drives the transmission shaft 13 to rotate a certain angle, and the transmission shaft 13 drives the first cam and the second cam 30 to rotate a first angle. The distal surfaces of the first cam and the second cam 30 are close to the first slider and the second slider 31 respectively. The first cam and the second cam 30 squeeze the first slider and the second slider 31. The first slider drives the first support rod and the second support rod to rotate around the base 12 in the direction away from each other through the first connecting rod 14 and the second connecting rod respectively. The first return spring is stretched, and the first pulley 5 is disengaged from the second pulley 4. The second slider 31 drives the third support rod 9 and the fourth support rod to rotate around the base 12 in the direction away from each other through the third connecting rod 11 and the fourth connecting rod respectively. The second return spring 10 is stretched, and the third pulley 8 is disengaged from the fourth pulley 7;

[0089] The cable marking device for locating power distribution line faults is moved to the bottom of the overhead cable 1, the first motor 22 drives the transmission shaft 13 to rotate a certain angle, the transmission shaft 13 drives the first cam and the second cam 30 to rotate a first angle, the near point surfaces of the first cam and the second cam 30 are close to the first slider and the second slider 31 respectively, the first cam and the second cam 30 no longer squeeze the first slider and the second slider 31, the first return spring pulls the first support rod and the second support rod to reset, the first support rod and the second support rod respectively drive the first connecting rod 14 and the second connecting rod to reset and reset the first slider, the first pulley 5 is against the second pulley 4, the second return spring 10 pulls the third support rod 9 and the fourth support rod to reset, the third support rod 9 and the fourth support rod respectively drive the third connecting rod 11 and the fourth connecting rod to reset and reset the second slider 31, the third pulley 8 is against the fourth pulley 7,

[0090] The cable marking device for locating faults in power distribution lines is released to make it fall, and the first pulley 5, the second pulley 4, the third pulley 8, and the fourth pulley 7 are all against the high-altitude cable 1 so that the cable marking device for locating faults in power distribution lines is hung on the high-altitude cable 1, and the second motor 6 drives the first pulley 5 to rotate, and the first pulley 5 drives the second pulley 4 to rotate through the friction strip, and the first pulley 5 cooperates with the second pulley 4 so that the cable marking device for locating faults in power distribution lines moves along the high-altitude cable 1;

[0091] When it moves to the fault point, the third motor 24 drives the first screw rod 23 to rotate forward by a certain angle, the first screw rod 23 drives the right-angle frame 3 to move up along the guide rod 15 and pushes the buckle 2 at its top to move up until it is engaged with the aerial cable 1, the third motor 24 drives the first screw rod 23 to rotate reversely by a certain angle, the first screw rod 23 drives the right-angle frame 3 to move down along the guide rod 15 to the initial position, the fourth motor 18 drives the second screw rod 17 to rotate by a certain angle, the second screw rod 17 drives the toggle slider 26 to move along the first support plate and push the buckle 2 so that the buckle 2 closest to the limiting spring sheet 16 is between the two limiting spring sheets 16, and the first clip is inserted into the first groove. When the cable marking device for locating distribution line faults moves along the aerial cable 1 to the next fault point, the above steps are repeated to clip the buckle 2 at this position for precise and continuous aerial marking.

[0092] The beneficial effect of the present invention is that, compared with the prior art,

[0093] The present invention can conveniently hang the device on the high-altitude cable and walk along it through the climbing walking mechanism, and can move the marking installation mechanism to the fault point. The marking installation mechanism can be used to clip the buckle at the position of the fault point, and the distribution line fault can be located through the high-altitude cable marking. The climbing walking mechanism cooperates with the marking installation mechanism to achieve accurate and continuous high-altitude marking, reducing the risk of manual installation.

[0094] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "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 a limitation on the present invention.

[0095] In addition, the terms "first" and "second" are used 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 such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0096] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between 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.

[0097] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "one solution", "some solutions", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the solution or example are included in at least one solution or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same solution or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more solutions or examples.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent replacements can still be made to the specific embodiments of the present invention, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A cable marking device for locating faults in a power distribution line, characterized in that: include: A base (12), a climbing walking mechanism and a marking installation mechanism, wherein the climbing walking mechanism is used to walk along an aerial cable (1), and the marking installation mechanism is used to mark the aerial cable (1) to locate a distribution line fault. The climbing walking mechanism and the marking installation mechanism are both arranged on the base (12), and the climbing walking mechanism comprises: a first support rod, a second support rod, a third support rod (9), and a fourth support rod, a first pulley (5), a second pulley (4), a third pulley (8), and a fourth pulley (7) rotatably connected to the base (12), the first pulley (5) being rotatably connected to the first support rod, the second pulley (4) being rotatably connected to the second support rod, the third pulley (8) being rotatably connected to the third support rod (9), and the fourth pulley (7) being rotatably connected to the fourth support rod, the first pulley (5) being connected to a second motor (6), and the marking installation mechanism comprising: a buckle (2), a storage portion, and a drive portion, the storage portion being used to store the buckle (2), and the drive portion being used to drive the buckle (2).

2. A cable marking device for locating faults in a power distribution line according to claim 1, characterized in that: The second motor (6) is connected to the first support rod, and the output shaft of the second motor (6) passes through the first support rod and is connected to the first pulley (5); the first pulley (5), the second pulley (4), the third pulley (8) and the fourth pulley (7) are all in a truncated cone shape; the first pulley (5) abuts against the second pulley (4); the third pulley (8) abuts against the fourth pulley (7); friction strips are linearly arranged on the circumference of the first pulley (5) and the second pulley (4) at one end close to each other, and on the circumference of the third pulley (8) and the fourth pulley (7) at one end close to each other, so as to increase friction.

3. A cable marking device for locating faults in a power distribution line according to claim 1, characterized in that: The base (12) is provided with a transmission shaft (13), a first motor (22), a first slider, and a second slider (31); the output shaft of the first motor (22) is connected to the transmission shaft (13); the transmission shaft (13) is provided with a first cam and a second cam (30) respectively matched with the first slider and the second slider (31); a first connecting rod (14) is provided between the first support rod and the first slider; a second connecting rod is provided between the second support rod and the first slider; a third connecting rod (11) is provided between the third support rod (9) and the second slider (31); and a fourth connecting rod is provided between the fourth support rod and the second slider (31).

4. A cable marking device for locating faults in a power distribution line according to claim 3, characterized in that: The first slider and the second slider (31) are both slidably connected to the base (12); the two ends of the first connecting rod (14) are respectively rotatably connected to the first support rod and the first slider; the two ends of the second connecting rod are respectively rotatably connected to the second support rod and the second slider (31); the two ends of the third connecting rod (11) are respectively rotatably connected to the third support rod (9) and the second slider (31); the two ends of the fourth connecting rod are respectively rotatably connected to the fourth support rod and the second slider (31); the first connecting rod (14), the second connecting rod, the third connecting rod (11) and the fourth connecting rod are all inclinedly arranged; the transmission shaft (13) is rotatably connected to the base (12); a first return spring is provided between the first support rod and the second support rod; and a second return spring (10) is provided between the third support rod (9) and the fourth support rod.

5. A cable marking device for locating faults in a power distribution line according to claim 1, characterized in that: The storage portion comprises: a first support plate and a second support plate, wherein the first support plate and the second support plate are both connected to the base (12), and a second clamping strip (21) is provided on one side of the first support plate and the second support plate close to each other, for guiding the buckle (2), and second grooves matching the second clamping strip (21) are provided on both sides of the buckle (2).

6. A cable marking device for locating faults in a power distribution line according to claim 5, characterized in that: The second support plate comprises: a latch (25), a first plate body (19) and a second plate body (20); the first plate body (19) is rotatably connected to the second plate body (20); the first plate body (19) is connected to the base (12); a second clamping strip (21) is provided on one side of the second plate body (20) close to the first support plate; a second placement seat (27) is provided on one side of the second plate body (20); a first placement seat (28) is provided on one side of the first plate body (19); and the latch (25) passes through the first placement seat (28) and the second placement seat (27).

7. A cable marking device for locating faults in a power distribution line according to claim 5, characterized in that: A fourth motor (18) is provided on the first support plate, the output shaft of the fourth motor (18) is connected to a second screw rod (17), the second screw rod (17) is rotatably connected to the first support plate, a toggle slider (26) is threadedly connected to the second screw rod (17), the toggle slider (26) passes through the first support plate and is slidably connected to the first support plate, and the toggle slider (26) is used to push the buckle (2).

8. A cable marking device for locating faults in a power distribution line according to claim 1, characterized in that: The driving part comprises: a right-angle frame (3), a third motor (24), a first screw rod (23) and a limiting spring piece (16); the output shaft of the third motor (24) is connected to the first screw rod (23); the first screw rod (23) is threadedly connected to the right-angle frame (3); the right-angle frame (3) is used to push the buckle (2); and the limiting spring piece (16) is located on both sides of the right-angle frame (3) and is connected to the base (12).

9. A cable marking device for locating faults in a power distribution line according to claim 8, characterized in that: The base (12) is provided with a counterweight (29) and a guide rod (15), the guide rod (15) passes through the right angle frame (3) and is slidably connected to the right angle frame (3), the two limit spring sheets (16) are provided with a first clamping strip on one side close to each other, which is used to guide the buckle (2), and the buckle (2) is provided with a first groove on both sides thereof that matches the first clamping strip, the third motor (24) is connected to the base (12), and the first screw rod (23) is rotatably connected to the base (12).

10. A method for using a cable marking device for locating a distribution line fault, based on the cable marking device for locating a distribution line fault according to any one of claims 1 to 9, characterized in that: The following steps are involved: The second plate body (20) is rotated, a plurality of buckles (2) are placed on one side of the first support plate, and the second plate body (20) is rotated back to the initial position; The slider (26) is moved to push the buckle (2) so that the buckle (2) closest to the limiting spring sheet (16) is located between the two limiting spring sheets (16); The first support rod and the second support rod rotate in directions away from each other, the first pulley (5) is disengaged from the second pulley (4), the third support rod (9) and the fourth support rod rotate in directions away from each other, the third pulley (8) is disengaged from the fourth pulley (7); The cable marking device for locating faults in a power distribution line is moved to below the overhead cable (1), the first support rod and the second support rod are reset, the first pulley (5) and the second pulley (4) are abutted against each other, the third support rod (9) and the fourth support rod are reset, and the third pulley (8) and the fourth pulley (7) are abutted against each other, The first pulley (5), the second pulley (4), the third pulley (8), and the fourth pulley (7) are all against the aerial cable (1), and the cable marking device for locating a distribution line fault moves along the aerial cable (1); When the device moves to the position of the fault point, the right-angle frame (3) pushes the buckle (2) at the top thereof upward until it is engaged with the aerial cable (1), and the right-angle frame (3) moves downward to the initial position, and the slider (26) is moved to push the buckle (2) so that the buckle (2) closest to the limiting spring sheet (16) is located between the two limiting spring sheets (16). When the cable marking device for locating faults in a power distribution line moves along the aerial cable (1) to the position of the next fault point, the above steps are repeated to engage the buckle (2) at this position for accurate and continuous aerial marking.

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