A buried cable course fault locator based on metal detection technology

Abstract

The application discloses a buried cable trend fault addressing device based on a metal detection technology, which comprises a pusher, a display is arranged at the first end of the pusher, a hexagonal equilateral rectangular wheel is rotationally connected to the second end of the pusher, a steel spike is arranged at each corner of the outer side of the rectangular wheel, the second end of the pusher is provided with an electric brush which is electrically connected to the display, the number of the electric brush is two, and the two electric brushes are slidably connected to two adjacent steel spikes at the bottom of the rectangular wheel. In the rotating process of the rectangular wheel with the steel spikes, two different steel spikes are inserted into the ground to form two contact points, the two electric brushes are in contact with the two steel spikes which are inserted into the ground respectively to transmit the weak voltage signal possibly existing in the ground to the display, so that the fault point of the buried line is judged, the setting that the rectangular wheel is pushed and moved by the pusher can avoid the staff from approaching the fault point of the buried line, and the electric shock accident is avoided, and the problem that the current buried line fault point searching device has a safety hidden danger is effectively solved.

Description

Technical Field

[0001] This invention belongs to the field of locating the route of underground power cables, and specifically relates to a fault addresser for underground cable routes based on metal detection technology. Background Technology

[0002] With power supply companies increasing their efforts in upgrading rural agricultural distribution transformers, underground cables are widely used in these projects due to their advantages such as ease of installation, land saving, low cost, and aesthetic appeal. However, because underground cables are constantly exposed to a damp underground environment, their insulation is prone to deterioration due to moisture or damage from external forces. Furthermore, the significant load variations they carry can lead to prolonged overload operation, all of which can cause faults in underground cables.

[0003] Previously, when power supply station operation and management personnel dealt with underground line faults, it was difficult to determine the exact location of the fault point. They had to dig up a large area of ​​the ground, which was time-consuming and labor-intensive, greatly increasing the difficulty of the entire repair work.

[0004] Currently, there are many instruments and devices on the market for locating faults in underground cables. Some devices place the probe on the feet of the maintenance personnel and detect the potential difference while walking normally; others require the maintenance personnel to insert a long probe into the ground with both hands to search for the fault. Although the above two types of devices are convenient to carry and flexible to use, they require close proximity to the fault location, which can easily lead to electric shock accidents and poses a great safety hazard.

[0005] The main problem is that underground cables are laid manually with a high degree of randomness, and it is difficult for the installers to remember the laying path completely. During maintenance, an unclear route will increase the difficulty of the detection and search process. Moreover, the existing instruments and equipment on the market do not have the function of determining the laying path of underground cables. Summary of the Invention

[0006] The technical problem to be solved by this invention is to provide a buried cable routing fault addresser based on metal detection technology, so as to solve the safety hazards of current buried cable fault location equipment.

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A fault locator for underground cables based on metal detection technology includes a pusher, a display at the first end of the pusher, a hexagonal equilateral rectangular wheel rotatably connected to the second end of the pusher, steel spikes at each corner of the outer side of the rectangular wheel, two brushes electrically connected to the display at the second end of the pusher, the two brushes being slidably connected to two adjacent steel spikes at the bottom of the rectangular wheel, the second end of the pusher being rotatably connected to the center of the rectangular wheel, and a counterweight cam at the second end of the pusher.

[0009] Furthermore, a motor is installed at the second end of the pusher, and the output shaft of the motor is connected to the rectangular wheel drive.

[0010] Furthermore, the length of the foot spike is 0.2 decimeters.

[0011] Furthermore, the second end of the pusher is equipped with a metal detection device connected to the display.

[0012] Furthermore, the metal detection device includes a fixing part connected to the second end of the pusher and a detection ring 9 disposed on the fixing part.

[0013] Furthermore, the detection ring 9 includes an annular adjustable sleeve and a detection coil disposed within the adjustable sleeve. The adjustable sleeve includes two symmetrically arranged expansion tubes, both of which are rotatably connected to the fixed part. A telescopic tube is provided between the two expansion tubes on the side away from the fixed part.

[0014] Furthermore, the fixing part is rotatably connected to the second end of the pusher.

[0015] Furthermore, the second end of the pusher is provided with a groove for accommodating a rectangular wheel.

[0016] Furthermore, support wheels are fixedly connected to the pusher on both sides of the groove. The support wheels include a telescopic sleeve and a pulley at the bottom of the telescopic sleeve. The upper end of the telescopic sleeve is fixedly connected to the pusher.

[0017] Furthermore, a battery electrically connected to the display and motor is provided on the push handle, and a motor switch is also provided on the push handle. The significant beneficial effects achieved by this invention are:

[0018] 1. This invention discloses a fault locator for underground cables based on metal detection technology, comprising a pusher, a display at the first end of the pusher, and a hexagonal equilateral rectangular wheel rotatably connected to the second end of the pusher. Each corner of the rectangular wheel has steel spikes. Two brushes, electrically connected to the display, are slidably connected to two adjacent steel spikes at the bottom of the rectangular wheel. This invention utilizes the rectangular wheel with steel spikes to insert two different steel spikes into the ground surface during rotation, forming two contact points. The two brushes, in contact with the two steel spikes inserted into the ground, transmit any weak voltage signals that may exist on the ground surface to the display. When a leakage occurs in the underground cable, the display value gradually increases or decreases as the rectangular wheel moves closer or further away, thereby determining the fault point of the underground cable and enabling targeted repair. The pusher-driven movement of the rectangular wheel avoids workers approaching the fault point of the underground cable, preventing electric shock accidents and effectively solving the safety hazards of current underground cable fault location equipment.

[0019] 2. The counterweight cam can increase the overall weight of the rectangular wheel during its movement, thereby increasing the weight and making the steel spikes penetrate the ground better.

[0020] 3. The motor configuration can reduce the workload of staff and facilitate long-term work and long-distance testing.

[0021] 4. The metal detector can detect the location of buried wires. By installing the metal detector in front of the rectangular wheel, it can detect whether there are buried wires in front of the rectangular wheel, and prevent the rectangular wheel from deviating from the path of the buried wire during the movement, which would cause the detection to lose its effectiveness.

[0022] 5. The detection ring includes two expandable expansion tubes that can adjust the size of the detection range. When detecting the location of a buried wire, the two expansion tubes can be expanded first. After the approximate location of the buried wire is detected, the two expansion tubes can be closed for precise detection, improving work efficiency.

[0023] 6. The rotatable connection between the fixed part and the second end of the pusher allows for easy folding of the detection ring, making it convenient to move and carry.

[0024] 7. The groove design can improve the stability of this application. Attached Figure Description

[0025] Appendix Figure 1 This is a side view of the underground cable routing fault addresser based on metal detection technology according to Embodiment 1 of the present invention.

[0026] Appendix Figure 2 This is a top view schematic diagram of the underground cable routing fault addresser based on metal detection technology according to Embodiment 1 of the present invention;

[0027] Appendix Figure 3 This is a schematic diagram of the rectangular wheel cross-sectional structure in the underground cable routing fault addresser based on metal detection technology in Embodiment 1 of the present invention;

[0028] Appendix Figure 4 This is a side view of the underground cable routing fault addresser based on metal detection technology, which is a schematic diagram of Embodiment 2 of the present invention.

[0029] Appendix Figure 5 This is a top view schematic diagram of the underground cable routing fault addresser based on metal detection technology according to Embodiment 2 of the present invention;

[0030] Appendix Figure 6 This is a side view of the underground cable routing fault addresser based on metal detection technology in Embodiment 3 of the present invention.

[0031] In the attached diagram, 1. Pusher; 2. Display; 3. Rectangular wheel; 4. Steel spike; 5. Brush; 6. Counterweight cam; 7. Motor; 8. Fixing part; 9. Detection ring; 10. Expansion tube; 11. Telescopic tube; 12. Groove; 13. Battery; 14. Motor switch. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0035] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0036] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0037] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0038] Example 1

[0039] like Figure 1 , Figure 2 and Figure 3 As shown, a fault locator for underground cables based on metal detection technology includes a pusher 1. The pusher 1 includes a push rod and a handle fixedly connected to one end of the push rod. The end of the pusher 1 with the handle is the first end, and the end of the pusher 1 away from the handle is the second end. A display 2 is installed on the first end of the pusher 1. A hexagonal equilateral rectangular wheel 3 is rotatably connected to the second end of the pusher 1. The second end of the pusher 1 is rotatably connected to the center of the rectangular wheel 3. Steel spikes 4 are fixedly connected to each corner of the outer side of the rectangular wheel 3. The inner side of the rectangular wheel 3 is circular. Two brushes 5 are installed on the second end of the pusher 1 and are electrically connected to the display 2. The two brushes 5 are slidably connected to two adjacent steel spikes 4 at the bottom of the rectangular wheel 3. The distance between the two steel spikes 4 is between 0.6 meters and 0.8 meters.

[0040] Specifically, the inner side of the rectangular wheel 3 is annular and has an annular groove. The steel spikes 4 are all set through the rectangular wheel 3 with the center of the rectangular wheel 3. The top of the steel spike 4 is adapted to the bottom of the annular groove. As the rectangular wheel 3 rotates, the two adjacent steel spikes 4 at the bottom of the rectangular wheel 3 change continuously. The two brushes 5 continuously contact different steel spikes 4 to conduct voltage signals. When the rectangular wheel 3 rotates, the two brushes 5 are slidably connected to the bottom of the annular groove.

[0041] Since the burial depth of underground cables is generally 0.7 meters from the ground, setting the length of the steel spike 4 to 0.2 decimeters can avoid damaging the underground cables while still achieving the detection effect.

[0042] In use, the operator pushes the rectangular wheel 3 by holding the handle in the pusher 1. The rectangular wheel 3 rotates under the push, and the steel spikes 4 at the six corners on the outside of the rectangular wheel 3 alternately insert into the ground as the rectangular wheel 3 rotates. Each time the rectangular wheel 3 rotates, two steel spikes 4 will insert into the ground, forming a circuit through the insertion of two steel spikes 4 into the ground. The two brushes 5 are slidably connected to the bottom inner side of the rectangular wheel 3 to transmit the voltage signal generated by the insertion of steel spikes 4 into the ground to the display 2. After the brushes 5 collect the voltage signal, the display 2 shows that a leakage voltage waveform is generated, indicating that there is a leakage in the buried wire. By continuously moving the rectangular wheel 3 back and forth in this area, the leakage voltage waveform displayed on the display 2 is used to further determine the fault point of the buried wire.

[0043] In order to better insert the steel spikes 4 into the ground when the rectangular wheel 3 rotates, a counterweight cam 6 is fixedly installed at the second end of the pusher 1. The counterweight cam 6 is a lead block. The weight at the connection between the pusher 1 and the rectangular wheel 3 is increased by setting the counterweight cam 6, which makes it easier for the steel spikes 4 to insert into the ground.

[0044] Secondly, to facilitate the staff to push the rectangular wheel 3, the second end of the pusher 1 is provided with a groove 12 for accommodating the rectangular wheel 3. The rectangular wheel 3 is rotatably connected in the groove 12. At the same time, a motor 7 is installed at the second end of the pusher 1. The motor 7 is connected to the rectangular wheel 3 through a transmission. A battery 13 is installed on the pusher 1 to provide power to the display 2 and the motor 7. A motor switch 14 is installed on the pusher 1 to control the motor 7.

[0045] By installing the rectangular wheel 3 in the groove 12 at the second end of the pusher 1, the stability of the pusher 1 during movement can be effectively improved. Support wheels fixedly connected to the pusher are respectively provided on both sides of the groove. The support wheels include a telescopic sleeve and a pulley at the bottom of the telescopic sleeve. The upper end of the telescopic sleeve is fixedly connected to the pusher. The support wheels are located on both sides of the rectangular wheel 3. The stability of the rectangular wheel 3 is improved by setting two support wheels, without affecting the movement of the rectangular wheel 3.

[0046] The motor 7 is designed so that the operator only needs to hold the push handle 1, and the rectangular wheel 3 rotates under the drive of the motor 7; the battery 13 is designed to provide power to ensure the normal operation of the display 2 and the motor 7.

[0047] In summary, this application utilizes a rectangular wheel 3 with steel spikes 4 to insert two different steel spikes 4 into the ground surface during rotation, forming two contact points. Two brushes 5 contact the two steel spikes 4 inserted into the ground surface to transmit the leakage voltage waveform that may exist on the ground surface to the display 2. When leakage occurs in the buried wire, the value on the display 2 gradually increases or decreases as the rectangular wheel 3 moves closer or further away, thereby determining the fault point of the buried wire and performing targeted repairs. The use of a pusher 1 to move the rectangular wheel 3 can prevent workers from approaching the fault point of the buried wire and avoid electric shock accidents, effectively solving the safety hazard problem of current buried wire fault location equipment.

[0048] Example 2

[0049] like Figure 4 and Figure 5 As shown, the structure of this embodiment is roughly the same as that of embodiment 1. This embodiment is further optimized based on embodiment 1. When laying underground lines manually, there is a lot of randomness. It is difficult for the laying personnel to remember the laying path completely. When maintaining the underground line, the unclear path will increase the difficulty of the detection and search process. However, the existing instruments and equipment on the market do not have the function of determining the laying path of underground lines.

[0050] Therefore, in this embodiment, a metal detector connected to a display 2 is installed at the second end of the pusher 1. The display 2 is used to display the detection results of the metal detector. The metal detector is used to explore the laying path of the underground wires and thus determine the direction of travel of the rectangular wheel 3.

[0051] Specifically, the metal detector includes a fixed part 8 fixedly connected to the second end of the pusher 1 and a detection ring 9 installed on the fixed part 8. The fixed part 8 is a rod. The detection ring 9 includes an annular adjustable sleeve and a detection coil installed in the adjustable sleeve. The detection coil is connected to the display 2. The adjustable sleeve includes two symmetrically arranged expansion tubes 10 that are rotatably connected to the ends of the fixed part 8. A telescopic tube 11 is provided between the two expansion tubes 10 on the side away from the fixed part 8. By rotating the two expansion tubes, the telescopic tube 11 is lengthened to expand the detection range of the detection ring 9, so as to quickly find the location of the buried wire. Then the two expansion tubes are closed for accurate detection.

[0052] The fixing part 8 is rotatably connected to the second end of the pusher 1. By rotating the fixing part 8 around the second end of the pusher 1, the fixing part 8 and the detection ring 9 can be retracted for easy movement.

[0053] Example 3

[0054] like Figure 6 As shown, the structure of this embodiment is roughly the same as that of embodiment 2. The difference between this embodiment and embodiment 2 is that in this embodiment, the side of the rectangular wheel 3 perpendicular to its axis is provided with a groove corresponding to the steel spike 4. The steel spike 4 is provided with a conductive connecting piece extending into the groove. Two brushes 5 are slidably connected to the side of the rectangular wheel 3 with the groove. The two brushes 5 are respectively connected to the conductive connecting pieces in the two adjacent steel spikes 4 at the bottom of the rectangular wheel 3. As the rectangular wheel 3 rotates, the steel spikes 4 connected to the two brushes 5 are constantly replaced. After each rotation of the rectangular wheel 3, two steel spikes 4 will simultaneously penetrate the ground to form a circuit with the brushes 5 and the display 2, thereby determining whether the buried line has a fault and the location of the fault point.

[0055] Currently, the technical solution of this application has undergone pilot testing, which is a small-scale experiment before the product is mass-produced. After the pilot testing was completed, a user survey was conducted on a small scale, and the survey results showed that user satisfaction was high. Now, preparations have begun for the formal production and industrialization of the product (including intellectual property risk warning surveys).

Claims

1. A buried cable route fault locator based on metal detection technology, characterized in that: Includes a pusher (1), the first end of which is provided with a display (2), the second end of which is rotatably connected to an equilateral rectangular wheel (3), each corner of the outer side of the rectangular wheel (3) is provided with a steel spike (4), the second end of which is provided with an electric brush (5) electrically connected to the display (2), the number of the electric brush (5) is two, the two electric brushes (5) are slidably connected to two adjacent steel spikes (4) at the bottom of the rectangular wheel (3), the second end of which is rotatably connected to the center of the rectangular wheel (3), and the second end of which is provided with a counterweight cam (6). The second end of the pusher (1) is also provided with a metal detection device connected to the display (2); the metal detection device includes a fixing part (8) connected to the second end of the pusher (1) and a detection ring (9) provided on the fixing part (8).

2. The buried cable fault locator based on metal detection technology according to claim 1, characterized in that: The second end of the pusher (1) is equipped with a motor (7), and the output shaft of the motor (7) is connected to the rectangular wheel (3) for transmission.

3. The buried cable fault locator based on metal detection technology according to claim 1, characterized in that: The length of the steel spike (4) is 0.2 decimeters.

4. The buried cable fault locator based on metal detection technology according to claim 1, characterized in that: The detection ring (9) includes an annular adjustable sleeve and a detection coil disposed in the adjustable sleeve. The adjustable sleeve includes two symmetrically arranged expansion tubes (10) that are rotatably connected to the fixed part (8). A telescopic tube (11) is provided between the two expansion tubes (10) on the side away from the fixed part (8).

5. The buried cable fault locator based on metal detection technology according to claim 4, characterized in that: The fixing part (8) is rotatably connected to the second end of the pusher (1).

6. The buried cable fault locator based on metal detection technology according to claim 2, characterized in that: The second end of the pusher (1) is provided with a groove (12) for accommodating a rectangular wheel (3).

7. A buried cable routing fault addresser based on metal detection technology according to claim 6, characterized in that: The groove (12) is provided with support wheels fixedly connected to the pusher (1) on both sides. The support wheels include a telescopic sleeve (15) and a pulley (16) at the bottom of the telescopic sleeve (15). The upper end of the telescopic sleeve (15) is fixedly connected to the pusher (1).

8. A buried cable routing fault addresser based on metal detection technology according to claim 7, characterized in that: The pusher (1) is provided with a battery (13) that is electrically connected to the display (2) and the motor (7), and the pusher (1) is provided with a motor switch (14).

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