CN217693541U - Transmission line prevents outer broken device - Google Patents
Transmission line prevents outer broken device Download PDFInfo
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- CN217693541U CN217693541U CN202221747330.3U CN202221747330U CN217693541U CN 217693541 U CN217693541 U CN 217693541U CN 202221747330 U CN202221747330 U CN 202221747330U CN 217693541 U CN217693541 U CN 217693541U
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Abstract
The utility model provides a transmission line prevents outer broken device, include: go up the box and lower box, go up the box with the connection can be dismantled to the box down, the inside of going up the box is provided with controller, wireless communication module and power module, the external fixation of going up the box is provided with infrared camera, the fixed removal module, the fixed module of cable and the cable detection module of being provided with in inside of box down, removal module, the fixed module of cable and the center of cable detection module are on same water flat line, the equal electric connection of removal module, the fixed module of cable and infrared camera the controller, the controller passes through wireless communication module and connects backstage monitoring host, power module is used for supplying power for each module. The utility model provides a transmission line prevents outer broken device can install fast and dismantle, convenient to use, and is with low costs, can realize preventing outer broken detection and transmission line border detection simultaneously.
Description
Technical Field
The utility model relates to a transmission line prevents outer broken technical field, especially relates to a transmission line prevents outer broken device.
Background
In recent years, with the rapid development of economy, urban and rural infrastructure construction is increasingly increased, so that phenomena of tree planting and house building against regulations in a line range area are increasingly increased, and cases of sudden and seasonal overhead transmission line external force damage caused by the phenomena are more and more.
The existing detection technology for preventing external damage often needs to be provided with a large number of cameras for detection when the power transmission line is too long, and is high in cost and extremely difficult to realize. Therefore, it is necessary to design a novel transmission line anti-external-damage device.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a transmission line prevents outer broken device, simple structure can install fast and dismantle, convenient to use, and is with low costs, can realize preventing outer broken detection and transmission line border detection simultaneously.
In order to achieve the above object, the utility model provides a following scheme:
an external damage prevention device for a power transmission line, comprising: the power transmission line sequentially penetrates through the cable detection module, the mobile module and the cable fixing module from left to right, the mobile module, the cable fixing module, the cable detection module and the infrared camera are all electrically connected with the controller, the controller is connected with a background monitoring host through the wireless communication module, and the power supply module is used for supplying power to each module;
the moving module is used for driving the lower box body and the upper box body to move along the power transmission line;
the cable fixing module is used for limiting the power transmission line and preventing the power transmission line from falling off from the moving module or the cable detection module;
the cable monitoring module is used for monitoring the power transmission line.
Optionally, the mobile module is fixed to be set up the inside center of box down, the mobile module includes walking wheel, leading wheel, runing rest, first motor fixed plate and first motor, upside and the downside at box center all fix the setting down the runing rest, rotatable coupling is gone up to the runing rest of box upside down the leading wheel, rotatable coupling is gone up to the runing rest of box downside down the walking wheel, transmission line sets up between leading wheel and the walking wheel, one side of box is fixed to be set up down first motor fixed plate, fixed setting on the first motor fixed plate the first motor, first motor drive is connected the walking wheel is used for driving the walking wheel is rotatory, first motor electric connection the controller.
Optionally, the cable fixing module is fixedly arranged on the right side of the moving module, the cable fixing module comprises a first arc-shaped ring, a second arc-shaped ring, a buffering module and a first fixing plate, the second arc-shaped ring is fixedly arranged at the bottom of the lower box body through the first fixing plate, the first arc-shaped ring is rotatably connected with one end of the second arc-shaped ring, the other end of the first arc-shaped ring is connected with the other end of the second arc-shaped ring through a bolt, the power transmission line is arranged between the first arc-shaped ring and the second arc-shaped ring, and the buffering module is arranged on the first arc-shaped ring.
Optionally, the buffer module includes a pressing plate, a plurality of push rods, a movable plate and a buffer spring, a plurality of cavities are uniformly formed in the first arc-shaped ring, the movable plate is arranged in the cavities, the buffer spring is arranged between the top of the movable plate and the top of the cavities, the push rods are fixedly arranged at the bottom of the movable plate, and the push rods penetrate through the inner portion of the first arc-shaped ring and are connected with the top of the pressing plate.
Optionally, the cable monitoring module is arranged on the left side of the mobile module, and the cable monitoring module comprises a second fixing plate, a second motor, a ring plate, a rotating plate and a monitoring terminal, wherein the ring plate is fixedly arranged at the bottom of the lower box body, a sliding groove is formed in the inner wall of the ring plate, the outer wall of the rotating plate is slidably connected into the sliding groove, an opening is formed in the top of the rotating plate and the top of the ring plate and used for allowing a power transmission line to enter, gear teeth are uniformly arranged on the front circumference of the rotating plate, a plurality of monitoring terminals are uniformly arranged on the inner wall of the rotating plate in the axial direction, the second motor fixing plate is fixedly arranged on one side of the lower box body, the second motor is fixedly arranged on the second motor fixing plate, the output end of the second motor is meshed with the gear teeth and used for driving the ring plate to rotate and monitoring the power transmission line, and the second motor and the monitoring terminals are electrically connected with the controller.
Optionally, the module of charging includes solar cell panel, battery, electric telescopic handle and montant, it is articulated to go up the top of box the montant, montant fixed connection the one end of solar cell panel bottom, the top of going up the box is fixed to be set up electric telescopic handle, electric telescopic handle's output fixed connection solar cell panel's the other end, solar cell panel electric connection the battery is used for giving the battery charges, the battery sets up go up the inside of box for charge for each module, electric telescopic handle electric connection the controller.
Optionally, a heat dissipation window is arranged on one side of the upper box body and used for dissipating heat of the upper box body, and a filter screen and a drying layer are arranged inside the heat dissipation window and used for preventing dust or water drops from entering the heat dissipation window.
Optionally, the top of infrared camera is provided with the flashing, the flashing is the type of falling V for prevent that infrared camera from drenching with rain.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect: the utility model provides a transmission line prevents outer broken device, the device is provided with upper box and lower box, wherein place each electric module in the upper box, and the upper box is provided with the heat dissipation window, can go out the heat that electric elements produced, be provided with filter screen and drying layer on the heat dissipation window, can prevent that dust and water droplet from getting into, the upper box right side is provided with infrared camera, can carry out real-time supervision to transmission line, in time discover the condition that takes place the invasion of foreign object and destroy, the upper portion of infrared camera is provided with the type of falling V dash board, can prevent that infrared camera from drenching with rain; the lower box body is internally provided with a moving module, a cable detection module and a cable fixing module, wherein the moving module drives a travelling wheel to travel on the power transmission line through a first motor so as to drive the lower box body to move on the power transmission line; the cable fixing module can limit the transmission line, when in use, one end of the first arc-shaped ring and one end of the second arc-shaped ring, which are connected through the bolts, are opened, the transmission line is put in, and then the first arc-shaped ring and the second arc-shaped ring are fixedly connected through the bolts, so that the transmission line is prevented from falling off, wherein the first arc-shaped ring is provided with the buffer module, so that the collision between the first arc-shaped ring and the transmission line can be buffered, and the damage is prevented; the cable detection module can realize the cycle detection of the power transmission line, the second motor drives the circular ring plate to rotate, and then the monitoring terminal is driven to rotate, the cycle detection of the power transmission line is carried out in real time, and the monitoring terminal can be replaced according to requirements; the device still is provided with the module of charging, including solar cell panel, battery, electric telescopic handle and montant, through the every single move angle that electric telescopic handle can adjust solar cell panel to improve the generating efficiency, it is energy-efficient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural view of an external damage prevention device for a power transmission line according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a mobile module;
FIG. 3 is a right side view of the upper housing;
FIG. 4 is a schematic view of a cable tie module construction;
FIG. 5 is a schematic view of a cable monitoring module;
fig. 6 is a schematic structural diagram of a buffer module.
Reference numerals: 1. an upper box body; 2. a lower box body; 3. a solar panel; 4. an electric telescopic rod; 5. a vertical rod; 6. a heat dissipation window; 7. a flashing; 8. an infrared camera; 9. a cable monitoring module; 10. rotating the bracket; 11. a second fixing plate; 12. a first fixing plate; 13. a cable fixing module; 14. a transmission line; 15. a guide wheel; 16. a traveling wheel; 17. a first motor; 18. a first motor fixing plate; 19. a buffer module; 20. a first arcuate ring; 21. a second arcuate ring; 22. a bolt; 23. a rotating plate; 24. monitoring a terminal; 25. a second motor; 26. a second motor fixing plate; 27. a cavity; 28. moving the plate; 29. a push rod; 30. a buffer spring; 31. a circular ring plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
The utility model aims at providing a transmission line prevents outer broken device can install fast and dismantle, convenient to use, and is with low costs, can realize preventing outer broken detection and transmission line border detection simultaneously.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the embodiment of the utility model provides a transmission line prevents outer broken device, include: the power transmission system comprises an upper box body 1, a lower box body 2, a controller, a wireless communication module, a power supply module, an infrared camera 8, a mobile module, a cable fixing module 13 and a cable monitoring module 9, wherein the upper box body 1 is detachably connected with the lower box body 2, the controller, the wireless communication module and the power supply module are arranged inside the upper box body 1, the infrared camera 8 is fixedly arranged outside the upper box body 1, the mobile module, the cable fixing module 13 and the cable detecting module 9 are fixedly arranged inside the lower box body 2, centers of the mobile module, the cable fixing module 13 and the cable detecting module 9 are on the same horizontal line, a power transmission line sequentially penetrates through the cable detecting module 9, the mobile module and the cable fixing module 13 from left to right, the mobile module, the cable fixing module 13, the cable detecting module 9 and the infrared camera 8 are electrically connected with the controller, the controller is connected with a background monitoring host through the wireless communication module, and the power supply module is used for supplying power to each module;
the moving module is used for driving the lower box body 2 and the upper box body 1 to move along the power transmission line 14;
the cable fixing module 13 is used for limiting the power transmission line 14 and preventing the power transmission line 14 from coming off from the moving module or the cable detection module 9;
the cable monitoring module 9 is used for monitoring the power transmission line 14.
The center of the left and right sides of lower box 2 is provided with the trompil that supplies transmission line 14 to pass, the top of trompil can set up the rectangular hole, and when using, will go up box 1 and lower box 2 and open, slide transmission line 14 in the trompil through the rectangular hole, fix module 13 spacing to transmission line 14 through the cable, prevent that transmission line 14 from deviating from, the bottom of lower box 2 can set up the balancing weight for make the device's structure more firm.
As shown in fig. 2, the mobile module is fixedly disposed at the center inside the lower box 2, the mobile module includes a traveling wheel 16, a guide wheel 15, a rotating bracket 10, a first motor fixing plate 18 and a first motor 17, the upper side and the lower side of the center of the lower box 2 are both fixedly disposed on the rotating bracket 10, the guide wheel 15 is rotatably connected to the rotating bracket 10 on the upper side of the lower box 2, the traveling wheel 16 is rotatably connected to the rotating bracket 10 on the lower side of the lower box 2, the power transmission line 14 is disposed between the guide wheel 15 and the traveling wheel 16, the first motor fixing plate 18 is fixedly disposed on the inner side wall of the lower box 2, the first motor 17 is fixedly disposed on the first motor fixing plate 18, the first motor 17 is in driving connection with the traveling wheel 16 and is used for driving the traveling wheel 16 to rotate, and the first motor 17 is electrically connected with the controller. The wheel surfaces of the travelling wheels 16 and the guide wheels 15 are arc-shaped and are attached to the surface of the power transmission line 14 to roll.
As shown in fig. 4, the cable fixing module 13 is fixedly disposed on the right side of the moving module, the cable fixing module 13 includes a first arc-shaped ring 20, a second arc-shaped ring 21, a buffering module 19 and a first fixing plate 12, the second arc-shaped ring 21 is fixedly disposed at the bottom of the lower box body 2 through the first fixing plate 12, one end of the first arc-shaped ring 20 is rotatably connected to one end of the second arc-shaped ring 21, the other end of the first arc-shaped ring is connected to the other end of the second arc-shaped ring 21 through a bolt 22, the power transmission line 14 is disposed between the first arc-shaped ring 20 and the second arc-shaped ring 21, and the buffering module 19 is disposed on the first arc-shaped ring 20.
As shown in fig. 6, the buffer module 19 includes a pressing plate, a plurality of push rods 29, a moving plate 28 and a buffer spring 30, a plurality of cavities 27 are uniformly formed in the first arc-shaped ring 20, the moving plate 28 is disposed in the cavities 27, the buffer spring 30 is disposed between the top of the moving plate 28 and the top of the cavities 27, the push rods 29 are fixedly disposed at the bottom of the moving plate 28, the push rods 29 penetrate through the first arc-shaped ring 20 and are connected to the top of the pressing plate, a plurality of balls can be disposed between the pressing plate and the power transmission line 14, and friction between the pressing plate and the power transmission line 14 can be reduced when the first arc-shaped ring 20 moves.
As shown in fig. 5, the cable monitoring module 9 is disposed on the left side of the mobile module, and includes a second fixing plate 11, a second motor fixing plate 26, a second motor 25, a ring plate 31, a rotating plate 23 and a monitoring terminal 24, where the ring plate 31 is fixedly disposed at the bottom of the lower case 2 through the second fixing plate 26, a sliding groove is disposed on an inner wall of the ring plate 31, an outer wall of the rotating plate 23 is slidably connected in the sliding groove, an opening is disposed at the top of the rotating plate 23 and the ring plate 31 for the power transmission line 14 to enter, gear teeth are uniformly disposed on a front circumference of the rotating plate 23, a plurality of monitoring terminals 24 are uniformly disposed along an axial direction on the inner wall of the rotating plate 23, the second motor fixing plate 26 is fixedly disposed at one side of the lower case 2, the second motor 25 is fixedly disposed on the second motor fixing plate 26, an output end of the second motor 25 is engaged and connected to the gear teeth for driving the ring plate 31 to rotate to monitor the power transmission line 14, the second motor 25 and the monitoring terminal 24 are electrically connected to the controller, the monitoring terminal 24, the monitoring terminal can monitor the temperature of the cable, and the cable can be connected to the harmonic, and the cable monitoring probe.
As shown in fig. 1, the module of charging includes solar cell panel 3, battery, electric telescopic handle 4 and montant 5, it is articulated to go up the top of box 1 montant 5, montant 5 fixed connection the one end of solar cell panel 3 bottom, the fixed setting in top of going up box 1 electric telescopic handle 4, electric telescopic handle 4's output fixed connection solar cell panel 3's the other end, solar cell panel 3 electric connection the battery is used for giving the battery charges, the battery sets up go up the inside of box 1 for charge for each module, electric telescopic handle 4 electric connection the controller.
Go up one side of box 1 and be provided with heat dissipation window 6 for to last box 1 dispel the heat, 6 inside filter screens and the dry layer of being provided with of heat dissipation window are used for preventing dust or water droplet entering.
As shown in fig. 3, a rain shield 7 is disposed on the top of the infrared camera 8, and the rain shield 7 is of an inverted V shape and is used for preventing the infrared camera 8 from raining.
The controller can adopt a single chip microcomputer and the like, the wireless communication module can adopt a 4G communication module or a WIFI module, the controller can be in communication connection with the mobile phone end through the wireless communication module, and a worker can control the controller through the background monitoring host and can control the controller through the mobile phone end.
The utility model discloses a use does: when the intelligent monitoring device is used, the upper box body and the lower box body are opened, the power transmission line is placed into the lower box body, one end of a first arc-shaped ring of a cable fixing module, which is connected with one end of a second arc-shaped ring through a bolt, is opened, the power transmission line is arranged between a travelling wheel and a guide wheel, the travelling wheel can drive the lower box body and the upper box body to move on the power transmission line, the power transmission line is placed into the circular ring plate and the rotating plate from the opening of the circular ring plate and the rotating plate, the upper box body and the lower box body are closed, an electric telescopic rod is controlled to stretch and retract through a controller, the solar charging plate faces the sun, the charging efficiency is improved, the first motor and the second motor are started through the controller, the travelling wheel drives the lower box body and the upper box body to move on the power transmission line, the rotating plate drives a monitoring terminal to rotate, the power transmission line is subjected to circle monitoring, images collected by the infrared camera in real time in the moving process, the controller or a monitoring host can set an intelligent identification algorithm in the prior art, whether the images collected by the infrared camera is analyzed, and further, the intrusion of foreign objects is judged.
The utility model provides a transmission line prevents outer broken device, the device is provided with upper box and lower box, wherein place each electric module in the upper box, and the upper box is provided with the heat dissipation window, can go out the heat that electric elements produced, be provided with filter screen and drying layer on the heat dissipation window, can prevent that dust and water droplet from getting into, the upper box right side is provided with infrared camera, can carry out real-time supervision to transmission line, in time discover the condition that takes place the invasion of foreign object and destroy, the upper portion of infrared camera is provided with the type of falling V dash board, can prevent that infrared camera from drenching with rain; the lower box body is internally provided with a moving module, a cable detection module and a cable fixing module, wherein the moving module drives a travelling wheel to travel on the power transmission line through a first motor so as to drive the lower box body to move on the power transmission line; the cable fixing module can limit the transmission line, when in use, one end of the first arc-shaped ring and one end of the second arc-shaped ring, which are connected through the bolts, are opened, the transmission line is put in, and then the first arc-shaped ring and the second arc-shaped ring are fixedly connected through the bolts, so that the transmission line is prevented from falling off, wherein the first arc-shaped ring is provided with the buffer module, so that the collision between the first arc-shaped ring and the transmission line can be buffered, and the damage is prevented; the cable detection module can realize the cycle detection of the power transmission line, the second motor drives the circular ring plate to rotate, and then the monitoring terminal is driven to rotate, the cycle detection of the power transmission line is carried out in real time, and the monitoring terminal can be replaced according to requirements; the device still is provided with the module of charging, including solar cell panel, battery, electric telescopic handle and montant, through the every single move angle that electric telescopic handle can adjust solar cell panel to improve the generating efficiency, it is energy-efficient.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. The utility model provides an outer broken device is prevented to transmission line which characterized in that includes: the power transmission line sequentially penetrates through the cable detection module, the mobile module and the cable fixing module from left to right, the mobile module, the cable fixing module, the cable detection module and the infrared camera are all electrically connected with the controller, the controller is connected with a background monitoring host through the wireless communication module, and the power supply module is used for supplying power to each module;
the moving module is used for driving the lower box body and the upper box body to move along the power transmission line;
the cable fixing module is used for limiting the power transmission line and preventing the power transmission line from falling off from the moving module or the cable detection module;
the cable monitoring module is used for monitoring the power transmission line.
2. The transmission line external damage prevention device according to claim 1, wherein the moving module is fixedly arranged at the center inside the lower box body, the moving module comprises a traveling wheel, a guide wheel, a rotating bracket, a first motor fixing plate and a first motor, the rotating bracket is fixedly arranged on the upper side and the lower side of the center of the lower box body, the guide wheel is rotatably connected to the rotating bracket on the upper side of the lower box body, the traveling wheel is rotatably connected to the rotating bracket on the lower side of the lower box body, the transmission line is arranged between the guide wheel and the traveling wheel, the first motor fixing plate is fixedly arranged on one side of the lower box body, the first motor is fixedly arranged on the first motor fixing plate, the first motor is in driving connection with the traveling wheel and used for driving the traveling wheel to rotate, and the first motor is electrically connected with the controller.
3. The transmission line external-damage prevention device according to claim 1, wherein the cable fixing module is fixedly arranged on the right side of the moving module, the cable fixing module comprises a first arc-shaped ring, a second arc-shaped ring, a buffering module and a first fixing plate, the second arc-shaped ring is fixedly arranged at the bottom of the lower box body through the first fixing plate, one end of the first arc-shaped ring is rotatably connected with one end of the second arc-shaped ring, the other end of the first arc-shaped ring is connected with the other end of the second arc-shaped ring through a bolt, the transmission line is arranged between the first arc-shaped ring and the second arc-shaped ring, and the buffering module is arranged on the first arc-shaped ring.
4. The transmission line external-damage prevention device according to claim 3, wherein the buffer module comprises a pressing plate, a plurality of push rods, a moving plate and a buffer spring, a plurality of cavities are uniformly formed in the first arc-shaped ring, the moving plate is arranged in the cavities, the buffer spring is arranged between the top of the moving plate and the top of the cavities, the push rods are fixedly arranged at the bottom of the moving plate, and the push rods penetrate through the inside of the first arc-shaped ring and are connected with the top of the pressing plate.
5. The transmission line external-damage prevention device according to claim 1, wherein the cable monitoring module is disposed on the left side of the moving module and includes a second fixing plate, a second motor, a ring plate, a rotating plate and monitoring terminals, the ring plate is fixedly disposed at the bottom of the lower box body through the second fixing plate, a sliding groove is formed in an inner wall of the ring plate, an outer wall of the rotating plate is slidably connected to the sliding groove, an opening is formed in the top of the rotating plate and the top of the ring plate and used for allowing a transmission line to enter, gear teeth are uniformly disposed on the circumference of the front surface of the rotating plate, a plurality of monitoring terminals are uniformly disposed on the inner wall of the rotating plate along the axial direction, the second motor fixing plate is fixedly disposed on one side of the lower box body, the second motor is fixedly disposed on the second motor fixing plate, an output end of the second motor is meshed and connected to the gear teeth and used for driving the ring plate to rotate so as to monitor the transmission line, and the second motor and the monitoring terminals are electrically connected to the controller.
6. The transmission line external-damage prevention device of claim 1, wherein the power supply module comprises a solar cell panel, a storage battery, an electric telescopic rod and a vertical rod, the vertical rod is hinged to the top of the upper box body, the vertical rod is fixedly connected with one end of the bottom of the solar cell panel, the electric telescopic rod is fixedly arranged on the top of the upper box body, the output end of the electric telescopic rod is fixedly connected with the other end of the solar cell panel, the solar cell panel is electrically connected with the storage battery and used for charging the storage battery, the storage battery is arranged inside the upper box body and used for charging each module, and the electric telescopic rod is electrically connected with the controller.
7. The transmission line external-damage prevention device of claim 1, wherein a heat dissipation window is arranged on one side of the upper box body and used for dissipating heat of the upper box body, and a filter screen and a drying layer are arranged inside the heat dissipation window and used for preventing dust or water drops from entering the heat dissipation window.
8. The transmission line external-damage-prevention device according to claim 1, wherein a rain shield is arranged at the top of the infrared camera, and the rain shield is of an inverted V shape and is used for preventing the infrared camera from being rained.
9. The transmission line external damage prevention device according to claim 5, wherein the monitoring terminal is a temperature monitoring probe or a cable harmonic monitoring probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221747330.3U CN217693541U (en) | 2022-07-06 | 2022-07-06 | Transmission line prevents outer broken device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221747330.3U CN217693541U (en) | 2022-07-06 | 2022-07-06 | Transmission line prevents outer broken device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217693541U true CN217693541U (en) | 2022-10-28 |
Family
ID=83715265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221747330.3U Active CN217693541U (en) | 2022-07-06 | 2022-07-06 | Transmission line prevents outer broken device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217693541U (en) |
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2022
- 2022-07-06 CN CN202221747330.3U patent/CN217693541U/en active Active
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