CN113835136A - External-breaking-proof device for underground cable - Google Patents
External-breaking-proof device for underground cable Download PDFInfo
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- CN113835136A CN113835136A CN202111055561.8A CN202111055561A CN113835136A CN 113835136 A CN113835136 A CN 113835136A CN 202111055561 A CN202111055561 A CN 202111055561A CN 113835136 A CN113835136 A CN 113835136A
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- 230000006698 induction Effects 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 description 14
- 239000007769 metal material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 241000209128 Bambusa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression 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
- 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
- 239000011241 protective layer Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- G—PHYSICS
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- 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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Abstract
The invention relates to an underground cable external-damage-prevention device which comprises a rectangular body, a metal detection sensor arranged at the lower end of the rectangular body, a containing pipe arranged at the front end of the rectangular body along the axial direction and an equipment cavity arranged at the tail part of the containing pipe, wherein the metal detection sensor is arranged at the upper end of the rectangular body; a first telescopic cylinder is arranged in the accommodating pipe, and a second telescopic cylinder is arranged in the first telescopic cylinder; a screw cylinder penetrates through the second telescopic cylinder; the outer end of the screw cylinder is provided with an induction coil, the head end of the screw cylinder is rotationally connected with the front end of the second telescopic cylinder, the screw cylinder is rotationally connected with the side wall of the front end of the equipment cavity through a fixing nut, and the tail end of the screw cylinder extends into the equipment cavity and is externally sleeved with a gear nut; a driving motor is arranged in the equipment cavity, and a driving gear meshed with a gear nut is arranged on an output shaft of the driving motor; and a controller is arranged in the equipment cavity, and the controller is respectively and electrically connected with the metal detection sensor and the induction coil. The invention has simple structure and convenient operation, improves the intelligent degree of the power grid and ensures the personal safety of constructors.
Description
Technical Field
The invention relates to an external-damage-prevention device for an underground cable.
Background
Underground cable is a cable which is buried underground compared with common overhead lines, and is also called underground cable. Cables are made of one or more mutually insulated conductors surrounded by an insulating layer and a protective layer for transmitting power or information from one location to another.
After entering modern society, due to the reasons of shortage of urban land, high traffic pressure, urban construction and the like, underground cable power transmission is commonly adopted in large cities. Compared with an overhead line, 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, the depth and the like of the underground cable need to be investigated firstly before the road surface needs to be broken away in the building construction process, the cable can be broken by careless digging, and a large-scale power failure accident is caused.
Chinese patent CN211239270U discloses an underground 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 thread groove about the lateral wall of right plate body and left plate body, the spiro union has the screw rod in the thread groove, be equipped with on the lateral wall of screw rod and rotate the piece, the lateral wall of screw rod is connected with the ring through rotating the piece, the lateral wall fixed mounting of ring has the connecting rod, fixed mounting has the briquetting on the connecting rod, a side of briquetting closely laminates 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 thread groove on left plate body and right plate body, and the spiro union has the screw rod in the thread groove, is connected with the ring through rotating 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 damp proof board, carries out the contact fixation to damp proof board, and this kind of fixed mode is compared in traditional bolt pass mode and can not cause the damage to damp proof board, and then guarantees the dampproofing effect that the damp proof board plays the cable, increases damp proof 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 cables, and comprises a cylindrical pipe body, wherein the cable is axially arranged in the pipe body, the top of the pipe body is axially grooved, a step is arranged on the pipe wall of the grooved part, and a top cover is arranged on the step. The top cap is a plurality of, a plurality of top caps are arranged side by side fluting department covers the fluting, be provided with the handle on the top cap, the handle is rings. Underground cable protection mechanism can install and protect the cable, can open the top cap part in the mechanism again, conveniently maintains a certain section cable wherein.
Chinese patent CN111064156A discloses an underground tunnel cable protection device, which comprises a protection main body; the front end edge and the rear end edge of the plane at the bottom of the protection main body are respectively 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, the middle part of the pressing mechanism is vertically provided with the pressing rod in a sliding mode, the upper end of the pressing rod is fixedly provided with a cross rod, the lower end of the pressing rod penetrates through the lower protection main body, the part, between the pressing mechanism and the protection main body, of the pressing rod is sleeved with the spring, the baffle disc is fixedly arranged on the pressing rod below the 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 rotatably connected with a hooking mechanism; a guide mechanism is fixedly arranged at the position between the two protection plates in the middle of the bottom plane of the protection main body, and the hooking mechanism just passes through the guide mechanism; the lower end of the hooking mechanism is hooked with a cable; and the upper end of the back plane of the protection main body is vertically and backwards fixedly provided with a mounting seat. Because the tongue-and-groove of T type form has been seted up to the left end border department of protection main part, the right-hand member border department of protection main part is provided with the tenon that suits with the tongue-and-groove, and when the installation, accessible tongue-and-groove and tenon make and connect inseparabler between each coupling assembling, avoid because of dragging the separation. Because the vertical interval evenly installs the dust excluder respectively on the lateral wall of guard plate, its dust excluder is narrow triangle prism column structure about wide, can avoid being infected with the dust on the outer wall of guard plate, reduces static and produces the probability, can effectual protection cable normal use to the dust excluder still can play the crashproof cushioning effect of removal, is particularly useful for civil engineering underground complicated environment.
Therefore, the various schemes start from the angle of laying the cable and the angle of the cable, so that the protection method has the unique advantages of good protection effect, reliable protection and the like, but the large construction cost is caused for large-scale and long-distance cable laying projects.
Disclosure of Invention
The invention aims to provide an underground cable external-damage-prevention device which is simple in structure and convenient to operate.
The invention adopts the following technical scheme:
an underground cable external-damage-prevention device comprises a rectangular body, a metal detection sensor arranged at the lower end of the rectangular body, a containing pipe arranged at the front end of the rectangular body along the axial direction and an equipment cavity arranged at the tail part of the containing pipe; a first telescopic cylinder is arranged in the accommodating pipe, and a second telescopic cylinder is arranged in the first telescopic cylinder; a screw cylinder penetrates through the second telescopic cylinder; the outer end of the screw cylinder is provided with an induction coil, the head end of the screw cylinder is rotationally connected with the front end of the second telescopic cylinder, the screw cylinder is rotationally connected with the side wall of the front end of the equipment cavity through a fixing nut, and the tail end of the screw cylinder extends into the equipment cavity and is externally sleeved with a gear nut; a driving motor is arranged in the equipment cavity, and a driving gear meshed with a gear nut is arranged on an output shaft of the driving motor; and a controller is arranged in the equipment cavity, and the controller is respectively and electrically connected with the metal detection sensor and the induction coil.
Furthermore, the front end of the containing pipe is provided with a first inner retaining ring, and the outer side of the tail end of the first telescopic cylinder is provided with a first outer retaining ring matched with the first inner retaining ring.
Further, a compression ring is arranged on the inner side of the tail end of the first telescopic cylinder; the outer diameter of the second telescopic cylinder is larger than the inner diameter of the pressing ring.
Furthermore, the inner side of the front end of the first telescopic cylinder is provided with a second inner retaining ring, and the periphery of the second telescopic cylinder is provided with a second outer retaining ring matched with the second inner retaining ring.
Furthermore, the second telescopic cylinder is a diameter-variable cylinder, and a second outer baffle ring is formed at the diameter-variable 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; and the diameter changing positions of the wide-diameter section and the narrow-diameter section form a second outer baffle ring.
Furthermore, a lead is arranged in the second telescopic cylinder in a penetrating manner and is connected with the induction coil and the controller.
Furthermore, 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.
Furthermore, an alarm connected with the controller is arranged in the equipment cavity.
Furthermore, an electromagnet is arranged at the top end of the rectangular body and connected with the controller.
The invention has the beneficial effects that: through the first telescopic cylinder and the second telescopic cylinder, the device can adjust the relative position of the induction coil and the ground surface, so that detection is facilitated, and the induction coil is convenient to store after 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, thereby preventing misjudgment caused by single factors.
The invention avoids the problem of greatly increasing the cost when protecting the cable body, and effectively avoids the problem of external damage of the underground cable caused by blind construction; the improvement of the continuous power supply capability provided by the power grid for the user 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 its collapsed configuration.
Fig. 2 is a schematic view of the second telescopic cylinder of the device of the present invention.
Fig. 3 is a schematic structural diagram of the first telescopic cylinder and the second telescopic cylinder of the device of the invention when telescopic.
Fig. 4 is an enlarged schematic view of a portion a of fig. 3.
Fig. 5 is a schematic top view of the structure of fig. 1.
Fig. 6 is a circuit connection block diagram.
Wherein, 1 rectangle body, 2 metal detection sensor, 3 accomodate pipe, 4 equipment chambeies, 5 first flexible section of thick bamboo, 6 second flexible section of thick bamboo, 7 screw rod section of thick bamboos, 8 induction coil, 9 gear nut, 10 driving motor, 11 output shafts, 12 drive gear, 13 controllers, 14 first interior fender ring, 15 first outer fender ring, 16 clamping rings, 17 second interior fender ring, 18 second outer fender ring, 19 alarms, 20 electro-magnets, 21 fixation nut.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present 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 than those described herein, and it will be apparent to those of ordinary skill in the art 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 example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship 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 of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
Example 1
As shown in fig. 1 to 5, an underground cable external-damage prevention device includes a rectangular body 1, a metal detection sensor 2 disposed at a lower end of the rectangular body 1, a storage tube 3 disposed at a front end of the rectangular body 1 along an axial direction, and an equipment chamber 4 disposed at a rear end of the storage tube 3.
A first telescopic cylinder 5 is arranged in the accommodating pipe 3, and a second telescopic cylinder 6 is arranged in the first telescopic cylinder 5; a screw cylinder 7 penetrates through the second telescopic cylinder 6; an induction coil 8 is arranged at the outer end of the screw cylinder 7, the head end of the screw cylinder 7 is rotatably connected with the front end of the second telescopic cylinder 6, the screw cylinder 7 is rotatably connected with the side wall of the front end of the equipment cavity 4 through a fixing nut 21, and the tail end of the screw cylinder 7 extends into the equipment cavity 4 and is externally 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, and then drives the gear nut to rotate, and the internal thread of the gear nut is matched with the external thread of the screw cylinder to complete the back-and-forth movement of the screw cylinder. The head end of the screw rod barrel is rotatably connected with the front end of the second telescopic barrel so as to pull the second telescopic barrel to move back and forth, and the second telescopic barrel drives the first telescopic barrel to move back and forth. The induction coil can be outwards outstanding, realizes surveying, can return after the survey and accomodate the pipe completion and accomodate, protection induction coil.
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 signal to give the controller with signal transmission, and induction coil collects the electromagnetic induction signal of underground cable and conveys the controller behind the shaping circuit module, and the controller is according to above-mentioned two signals, when having metal material to detect simultaneously and have 50Hz frequency signal, controller control alarm reports to the police.
The front end of the accommodating pipe 3 is provided with a first inner retaining ring 14, and the outer side of the tail end of the first telescopic cylinder 5 is provided with a first outer retaining ring 15 matched with the first inner retaining ring 14.
A press 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 pressure ring 16.
A second inner retaining ring 17 is arranged on the inner side of the front end of the first telescopic cylinder 5, and a second outer retaining ring 18 matched with the second inner retaining ring 17 is arranged on the periphery of the second telescopic cylinder 6.
Example 2
The difference from example 1 is that:
the second telescopic cylinder 5 is a diameter-variable cylinder, and a second outer retaining ring is formed at the diameter-variable 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 diameter changing part of the wide diameter section and the narrow diameter section forms a second outer baffle ring 18.
Example 3
The difference from example 2 is that:
and a lead is arranged in the second telescopic cylinder 5 in a penetrating manner and 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 a metal material signal and sends the signal to the controller, the induction coil collects an electromagnetic induction signal of the underground cable and transmits the electromagnetic induction signal to the controller after passing through the shaping circuit module, and the controller controls the alarm to give an alarm according to the two signals when the metal material simultaneously detects a 50Hz frequency signal.
Claims (10)
1. An 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 containing pipe arranged at the front end of the rectangular body along the axial direction and an equipment cavity arranged at the tail part of the containing pipe; a first telescopic cylinder is arranged in the accommodating pipe, and a second telescopic cylinder is arranged in the first telescopic cylinder; a screw cylinder penetrates through the second telescopic cylinder; the outer end of the screw cylinder is provided with an induction coil, the head end of the screw cylinder is rotationally connected with the front end of the second telescopic cylinder, the screw cylinder is rotationally connected with the side wall of the front end of the equipment cavity through a fixing nut, and the tail end of the screw cylinder extends into the equipment cavity and is externally sleeved with a gear nut; a driving motor is arranged in the equipment cavity, and a driving gear meshed with a gear nut is arranged on an output shaft of the driving motor; and a controller is arranged in the equipment cavity, and the controller is respectively and electrically connected with the metal detection sensor and the induction coil.
2. The underground cable external-breaking prevention device as claimed in claim 1, wherein a first inner retaining ring is arranged at the front end of the accommodating pipe, and a first outer retaining ring matched with the first inner retaining ring is arranged at the outer side of the tail end of the first telescopic cylinder.
3. The underground cable external-damage preventing device according to claim 2, wherein a press ring is arranged on the inner side of the tail end of the first telescopic cylinder; the outer diameter of the second telescopic cylinder is larger than the inner diameter of the pressing ring.
4. An underground cable external-damage-prevention device as claimed in 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. An underground cable external-breaking-prevention device as claimed in claim 4, wherein the second telescopic cylinder is a diameter-variable cylinder, and a second external retaining ring is formed at the diameter-variable position.
6. An underground cable external-breaking prevention device as claimed in claim 5, wherein 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; and the diameter changing positions of the wide-diameter section and the narrow-diameter section form a second outer baffle ring.
7. An underground cable external-damage preventing device as claimed in claim 1, wherein a lead is arranged in the second telescopic cylinder in a penetrating manner, and the lead is connected with the induction coil and the controller.
8. The underground cable external-damage-prevention device as claimed in claim 1, wherein the controller comprises a shaping circuit module, and a signal of the induction coil is input into the controller after passing through the shaping circuit module.
9. An underground cable external-damage prevention device as claimed in claim 1, wherein an alarm connected with the controller is arranged in the equipment chamber.
10. An underground cable external-damage preventing device as claimed in claim 1, wherein the rectangular body is provided at an upper top end thereof with an electromagnet, and the electromagnet is connected with a 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 true CN113835136A (en) | 2021-12-24 |
| CN113835136B 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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| CN208635833U (en) * | 2018-08-08 | 2019-03-22 | 唐山市广润电气设备有限公司 | A kind of digitally underground pipeline detecting instrument |
| CN209311700U (en) * | 2019-01-26 | 2019-08-27 | 山西诚晟通信工程有限公司 | A kind of construction cable detection device |
| 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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| CN113835136B (en) | 2024-05-07 |
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