CN113835136B - Underground cable anti-external-damage device - Google Patents
Underground cable anti-external-damage device Download PDFInfo
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- CN113835136B CN113835136B CN202111055561.8A CN202111055561A CN113835136B CN 113835136 B CN113835136 B CN 113835136B CN 202111055561 A CN202111055561 A CN 202111055561A CN 113835136 B CN113835136 B CN 113835136B
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- 230000006698 induction Effects 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 238000007493 shaping process Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 description 16
- 239000007769 metal material Substances 0.000 description 6
- 230000005674 electromagnetic induction Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
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- Physics & Mathematics (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Geophysics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to an underground cable anti-external-damage device which comprises a rectangular body, a metal detection sensor arranged at the lower end of the rectangular body, a storage tube axially arranged at the front end of the rectangular body and an equipment cavity arranged at the tail part of the storage tube; a first telescopic cylinder is sleeved in the storage tube, and a second telescopic cylinder is sleeved in the first telescopic cylinder; a screw rod cylinder is arranged in the second telescopic cylinder in a penetrating way; the outer end of the screw rod barrel is provided with an induction coil, the head end of the screw rod barrel is rotationally connected with the front end of the second telescopic barrel, the screw rod barrel is rotationally connected with the front end side wall of the equipment cavity through a fixing nut, and the tail end of the screw rod barrel extends into the equipment cavity and is sleeved with a gear nut; a driving motor is arranged in the equipment cavity, and a driving gear meshed with the gear nut is arranged on an output shaft of the driving motor; and a controller is arranged in the equipment cavity and is electrically connected with the metal detection sensor and the induction coil respectively. The intelligent power grid is simple in structure and convenient to operate, the intelligent degree of the power grid is improved, and the personal safety of constructors is ensured.
Description
Technical Field
The invention relates to an underground cable external damage prevention device.
Background
Underground cables are cables that are often buried under the ground as compared to conventional overhead lines, and are also referred to as underground cables. The cable is made of one or more mutually insulated conductors encased in an insulating layer and a protective layer for the transfer of electricity or information from one place to another.
After entering a modern society, underground cable power transmission modes are commonly adopted in large cities due to the fact that urban land is tense, traffic pressure is high, urban capacity is built and the like. Compared with overhead lines, the cable has the advantages of small occupied area, reliable power transmission, strong anti-interference capability and the like.
Because the cable is buried underground, the laying trend, depth and the like of the underground cable need to be investigated before the pavement is required to be broken during building construction, the cable is broken by a little careless, a large-range power failure accident is caused, and the accident not only causes great potential safety hazard to a power grid, but also causes irrecoverable loss to life and property safety of constructors.
Chinese patent CN211239270U discloses a secret cable protector is used in wisdom city, including right plate body, left plate body and cable, right plate body and left plate body lock are on the cable, the lateral wall of right plate body and left plate body is equipped with the mounting groove, be equipped with dampproofing board in the mounting groove, both ends all are equipped with the screw thread groove about the lateral wall of right plate body and left plate body, the spiro union has the screw rod in the screw thread groove, be equipped with the rotating member on the lateral wall of screw rod, the lateral wall of screw rod is connected with the ring through the rotating member, the lateral wall fixed mounting of ring has the connecting rod, fixed mounting has the briquetting on the connecting rod, a side of briquetting is closely laminated on dampproofing board, the upper and lower both ends of right plate body and left plate body are equipped with the mounting.
The device is through all being equipped with the screw groove on left plate body and right plate body, and the spiro union has the screw rod in the screw groove, is connected with the ring through rotating the piece on the lateral wall of screw rod, is equipped with the briquetting on the ring, through rotating the screw rod, makes the briquetting remove to dampproofing board, carries out contact fixation to dampproofing board, and this kind of fixed mode compares in traditional bolt pass the mode can not lead to the fact the damage to dampproofing board, and then guarantees dampproofing board to the dampproofing effect that plays, increases dampproofing board life, and the practicality is stronger.
Chinese patent CN108767799a discloses an underground cable protection mechanism, which is buried underground when in use, and is used for installing and protecting a cable, and comprises a tubular pipe body, the cable is axially arranged in the pipe body, the top of the pipe body is axially slotted, a step is arranged on the pipe wall of the slotted part, and a top cover is arranged on the step. The top covers are arranged at the slots side by side, the slots are covered, a handle is arranged on the top covers, and the handle is a hanging ring. The underground cable protection mechanism can be used for installing and protecting cables, and the top cover part in the mechanism can be opened, so that a certain section of cable in the mechanism is convenient to maintain.
Chinese patent CN111064156a discloses an underground tunnel cable protection device, comprising a protection body; the front end edge and the rear end edge of the bottom plane of the protection main body are respectively and vertically and downwards fixedly provided with a protection plate; the middle part of the top plane of the protection main body is fixedly provided with a pressing mechanism; the pressing mechanism comprises a pressing rod, a spring and a baffle disc, wherein the pressing rod is vertically and slidably arranged in the middle of the pressing mechanism, a cross rod is fixedly arranged at the upper end of the pressing rod, the lower end of the pressing rod penetrates through the protective main body below the pressing mechanism, the spring is sleeved on the part, located between the pressing mechanism and the protective main body, of the pressing rod, the baffle disc is fixedly arranged on the pressing rod below a top plate of the pressing mechanism, and the upper end of the spring abuts against the bottom of the baffle disc on the pressing rod; the lower end of the pressing mechanism penetrates through the protection main body and is rotationally connected with a hooking mechanism; the middle part of the bottom plane of the protective main body is fixedly provided with a guide mechanism at a position between the two protective plates, and the hooking mechanism just passes through the guide mechanism; the lower end of the hooking and pulling mechanism hooks and pulls the cable; the upper end of the back plane of the protection main body is vertically and backwardly fixedly provided with a mounting seat. Because the left end border department of protection main part has seted up the tongue-and-groove of T type form, the right-hand member border department of protection main part is provided with the tenon that suits with the tongue-and-groove, when the installation, accessible tongue-and-groove and tenon make the connection between each coupling assembling inseparabler, avoid separating because of dragging. Because evenly install dustproof strip in vertical interval on the lateral wall of guard plate respectively, its dustproof strip is wide in the upper portion and narrow triangular prism column structure down, can avoid being infected with the dust on the outer wall of guard plate, reduces static and produces the probability, can the normal use of effectual protection cable to dustproof strip can also play the crashproof cushioning effect of removal, is particularly useful for the complex environment in civil engineering underground.
It can be seen that the above-mentioned various schemes are all carried out from the angles of laying cables and the angles of the cables, and the protection method has the unique advantages of good protection effect, reliable protection and the like, but for large-scale and long-distance cable laying engineering, the construction cost is also larger.
Disclosure of Invention
The invention aims to provide an underground cable anti-external-damage device which is simple in structure and convenient to operate.
The invention adopts the following technical scheme:
The underground cable external damage preventing device comprises a rectangular body, a metal detection sensor arranged at the lower end of the rectangular body, a storage tube axially arranged at the front end of the rectangular body and an equipment cavity arranged at the tail part of the storage tube; a first telescopic cylinder is sleeved in the storage tube, and a second telescopic cylinder is sleeved in the first telescopic cylinder; a screw rod cylinder is arranged in the second telescopic cylinder in a penetrating way; the outer end of the screw rod barrel is provided with an induction coil, the head end of the screw rod barrel is rotationally connected with the front end of the second telescopic barrel, the screw rod barrel is rotationally connected with the front end side wall of the equipment cavity through a fixing nut, and the tail end of the screw rod barrel extends into the equipment cavity and is sleeved with a gear nut; a driving motor is arranged in the equipment cavity, and a driving gear meshed with the gear nut is arranged on an output shaft of the driving motor; and a controller is arranged in the equipment cavity and is electrically connected with the metal detection sensor and the induction coil respectively.
Further, the front end of the storage tube is provided with a first inner baffle ring, and the outer side of the tail end of the first telescopic cylinder is provided with a first outer baffle ring matched with the first inner baffle ring.
Further, a compression ring is arranged on the inner side of the tail end of the first telescopic cylinder; the external diameter of the second telescopic cylinder is larger than the internal diameter of the compression ring.
Further, a second inner baffle ring is arranged on the inner side of the front end of the first telescopic cylinder, and a second outer baffle ring matched with the second inner baffle ring is arranged on the periphery of the second telescopic cylinder.
Further, the second telescopic cylinder is a reducing cylinder, and a second outer baffle ring is formed at the reducing position.
Further, the second telescopic cylinder comprises a wide-diameter section and a narrow-diameter section, the outer diameter of the wide-diameter section is larger than the inner diameter of the second inner baffle ring and smaller than the inner diameter of the second telescopic cylinder, and the outer diameter of the narrow-diameter section is smaller than the inner diameter of the second inner baffle ring; the reducing positions of the wide-diameter section and the narrow-diameter section form a second outer baffle ring.
Further, a wire is arranged in the second telescopic cylinder in a penetrating mode, and the wire is connected with the induction coil and the controller.
Further, the controller comprises a shaping circuit module, and signals of the induction coil are input into the controller after passing through the shaping circuit module.
Further, an alarm connected with the controller is arranged in the equipment cavity.
Further, an electromagnet is arranged at the upper top end of the rectangular body, and the electromagnet is connected with the controller.
The invention has the beneficial effects that: the device can adjust the relative position of the induction coil and the ground surface through the first telescopic cylinder and the second telescopic cylinder, thereby being beneficial to detection and convenient to store after the detection is finished.
The invention comprehensively processes the metal material signals and the frequency signals by collecting the metal material signals and the frequency signals, and prevents misjudgment caused by single factors.
The invention avoids the problem of greatly increasing the cost during the protection of the cable itself, and effectively avoids the problem of external damage of the underground cable caused by blind construction; the improvement of the continuous power supply capacity of the power grid for users is effectively promoted; the stability of the power grid is improved, and the intelligent degree of the power grid is further improved; the personal safety of constructors is ensured.
Drawings
FIG. 1 is a schematic view of the device of the present invention in a contracted configuration.
Fig. 2 is a schematic view of the second telescopic tube of the device according to the present invention.
Fig. 3 is a schematic structural view of the first telescopic cylinder and the second telescopic cylinder of the device according to the present invention.
Fig. 4 is an enlarged schematic view of the portion a in fig. 3.
Fig. 5 is a schematic top view of fig. 1.
Fig. 6 is a block diagram of a circuit connection.
The device comprises a rectangular body 1, a metal detection sensor 2, a storage tube 3, a device cavity 4, a first telescopic cylinder 5, a second telescopic cylinder 6, a screw cylinder 7, an induction coil 8, a gear nut 9, a driving motor 10, an output shaft 11, a driving gear 12, a controller 13, a first inner baffle ring 14, a first outer baffle ring 15, a compression ring 16, a second inner baffle ring 17, a second outer baffle ring 18, an alarm 19, an electromagnet 20 and a fixing nut 21.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.
Example 1
As shown in fig. 1 to 5, an underground cable anti-external-damage device comprises a rectangular body 1, a metal detection sensor 2 arranged at the lower end of the rectangular body 1, a storage tube 3 axially arranged at the front end of the rectangular body 1, and an equipment cavity 4 arranged at the tail of the storage tube 3.
A first telescopic cylinder 5 is sleeved in the storage tube 3, and a second telescopic cylinder 6 is sleeved in the first telescopic cylinder 5; a screw rod cylinder 7 is arranged in the second telescopic cylinder 6 in a penetrating way; the outer end of the screw rod barrel 7 is provided with an induction coil 8, the head end of the screw rod barrel 7 is rotationally connected with the front end of the second telescopic barrel 6, the screw rod barrel 7 is rotationally connected with the front end side wall of the equipment cavity 4 through a fixing nut 21, and the tail end of the screw rod barrel 7 extends into the equipment cavity 4 and is sleeved with a gear nut 9; a driving motor 10 is arranged in the equipment cavity 4, and a driving gear 12 meshed with the gear nut 9 is arranged on an output shaft 11 of the driving motor 10. The driving shaft of the driving motor drives the driving gear to rotate, so that the gear nut is driven to rotate, and the internal thread of the gear nut is matched with the external thread of the screw barrel to complete the front-back movement of the screw barrel. The head end of the screw rod cylinder is rotationally connected with the front end of the second telescopic cylinder so as to pull the second telescopic cylinder to move back and forth, and the second telescopic cylinder drives the first telescopic cylinder to move back and forth. The induction coil can outwards protrude to realize detection, and after detection is finished, the induction coil can be retracted to the storage tube to finish storage, so that the induction coil is protected.
A controller 13 is arranged in the equipment cavity 4, and the controller 13 is electrically connected with the metal detection sensor 2 and the induction coil 8 respectively. The metal detection sensor detects metal material signals and sends the signals to the controller, the induction coil collects electromagnetic induction signals of the underground cable and sends the electromagnetic induction signals to the controller after passing through the shaping circuit module, and the controller controls the alarm to give an alarm when the metal material is detected to have a frequency signal of 50Hz at the same time according to the two signals.
The front end of the storage tube 3 is provided with a first inner baffle ring 14, and the outer side of the tail end of the first telescopic cylinder 5 is provided with a first outer baffle ring 15 matched with the first inner baffle ring 14.
A compression ring 16 is arranged on the inner side of the tail end of the first telescopic cylinder 5; the outer diameter of the second telescopic cylinder 6 is larger than the inner diameter of the compression ring 16.
The inner side of the front end of the first telescopic cylinder 5 is provided with a second inner baffle ring 17, and the outer periphery of the second telescopic cylinder 6 is provided with a second outer baffle ring 18 matched with the second inner baffle ring 17.
Example 2
The difference from example 1 is that:
The second telescopic cylinder 5 is a reducing cylinder, and a second outer baffle ring is formed at the reducing position.
The second telescopic cylinder 5 comprises a wide-diameter section and a narrow-diameter section, the outer diameter of the wide-diameter section is larger than the inner diameter of the second inner baffle ring 17 and smaller than the inner diameter of the second telescopic cylinder 5, and the outer diameter of the narrow-diameter section is smaller than the inner diameter of the second inner baffle ring 17; the reducing portions of the wide diameter section and the narrow diameter section form a second outer retainer ring 18.
Example 3
The difference from example 2 is that:
A wire is arranged in the second telescopic cylinder 5 in a penetrating way, and the wire is connected with the induction coil 8 and the controller 13.
The controller 13 comprises a shaping circuit module, and the signal of the induction coil 8 is input into the controller 13 after passing through the shaping circuit module.
An alarm 19 connected with the controller 13 is arranged in the equipment cavity 4.
An electromagnet 20 is arranged at the upper top end of the rectangular body 1, and the electromagnet 20 is connected with the controller 13.
As shown in fig. 6, the metal detection sensor detects metal material signals and sends the signals to the controller, the induction coil collects electromagnetic induction signals of the underground cable and sends the electromagnetic induction signals to the controller after passing through the shaping circuit module, and the controller controls the alarm to alarm when the metal material is detected to have a frequency signal of 50Hz according to the two signals.
Claims (10)
1. The underground cable external damage prevention device is characterized by comprising a rectangular body, a metal detection sensor arranged at the lower end of the rectangular body, a storage tube axially arranged at the front end of the rectangular body and an equipment cavity arranged at the tail part of the storage tube; a first telescopic cylinder is sleeved in the storage tube, and a second telescopic cylinder is sleeved in the first telescopic cylinder; a screw rod cylinder is arranged in the second telescopic cylinder in a penetrating way; the outer end of the screw rod barrel is provided with an induction coil, the head end of the screw rod barrel is rotationally connected with the front end of the second telescopic barrel, the screw rod barrel is rotationally connected with the front end side wall of the equipment cavity through a fixing nut, and the tail end of the screw rod barrel extends into the equipment cavity and is sleeved with a gear nut; a driving motor is arranged in the equipment cavity, and a driving gear meshed with the gear nut is arranged on an output shaft of the driving motor; and a controller is arranged in the equipment cavity and is electrically connected with the metal detection sensor and the induction coil respectively.
2. The underground cable anti-outward breaking device according to claim 1, wherein a first inner baffle ring is arranged at the front end of the storage tube, and a first outer baffle ring matched with the first inner baffle ring is arranged at the outer side of the tail end of the first telescopic tube.
3. The underground cable outward breaking prevention device according to claim 2, wherein a compression ring is arranged on the inner side of the tail end of the first telescopic cylinder; the external diameter of the second telescopic cylinder is larger than the internal diameter of the compression ring.
4. A device for preventing an underground cable from being broken according to claim 3, wherein a second inner baffle ring is arranged on the inner side of the front end of the first telescopic cylinder, and a second outer baffle ring matched with the second inner baffle ring is arranged on the periphery of the second telescopic cylinder.
5. The underground cable anti-outward-breaking device according to claim 4, wherein the second telescopic cylinder is a reducing cylinder, and a second outer baffle ring is formed at the reducing position.
6. The underground cable anti-outward breaking device according to claim 5, wherein the second telescopic tube comprises a wide diameter section and a narrow diameter section, the outer diameter of the wide diameter section is larger than the inner diameter of the second inner baffle ring and smaller than the inner diameter of the second telescopic tube, and the outer diameter of the narrow diameter section is smaller than the inner diameter of the second inner baffle ring; the reducing positions of the wide-diameter section and the narrow-diameter section form a second outer baffle ring.
7. The underground cable anti-outward breaking device according to claim 1, wherein a wire is arranged in the second telescopic cylinder in a penetrating manner, and the wire is connected with the induction coil and the controller.
8. The underground cable anti-outward breaking device according to claim 1, wherein the controller comprises a shaping circuit module, and the signal of the induction coil is input into the controller after passing through the shaping circuit module.
9. The underground cable anti-outward breaking device according to claim 1, wherein an alarm connected with a controller is arranged in the equipment cavity.
10. The underground cable anti-outward breaking device according to claim 1, wherein an electromagnet is arranged at the upper top end of the rectangular body, and the electromagnet is connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111055561.8A CN113835136B (en) | 2021-09-09 | 2021-09-09 | Underground cable anti-external-damage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111055561.8A CN113835136B (en) | 2021-09-09 | 2021-09-09 | Underground cable anti-external-damage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113835136A CN113835136A (en) | 2021-12-24 |
| CN113835136B true CN113835136B (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111055561.8A Active CN113835136B (en) | 2021-09-09 | 2021-09-09 | Underground cable anti-external-damage device |
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| CN (1) | CN113835136B (en) |
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| CN209560099U (en) * | 2019-04-24 | 2019-10-29 | 邹明洋 | A kind of Urban Underground detecting metal pipeline device |
| CN210664575U (en) * | 2019-08-30 | 2020-06-02 | 广州科测空间信息技术有限公司 | Detector for underground pipeline |
| CN111913222A (en) * | 2020-08-12 | 2020-11-10 | 河南飞舟管通工程有限公司 | Underground metal pipeline detector based on electromagnetic induction mechanism |
| CN113031099A (en) * | 2021-03-03 | 2021-06-25 | 陕西奇力达电子科技有限公司 | Underground cable tracking device |
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