CN114212623A - Electrical engineering accomodates protective apparatus with naked electric wire - Google Patents
Electrical engineering accomodates protective apparatus with naked electric wire Download PDFInfo
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- CN114212623A CN114212623A CN202210053871.4A CN202210053871A CN114212623A CN 114212623 A CN114212623 A CN 114212623A CN 202210053871 A CN202210053871 A CN 202210053871A CN 114212623 A CN114212623 A CN 114212623A
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- protection box
- storage
- box
- storage protection
- electrical engineering
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- 238000004870 electrical engineering Methods 0.000 title claims abstract description 20
- 230000001681 protective effect Effects 0.000 title claims description 15
- 238000003860 storage Methods 0.000 claims abstract description 77
- 238000013016 damping Methods 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 18
- 239000004698 Polyethylene Substances 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 238000004804 winding Methods 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005290 field theory Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/04—Kinds or types
- B65H75/16—Cans or receptacles, e.g. sliver cans
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/10—Containers destroyed or opened by flames or heat
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0437—Channels
- H02G3/045—Channels provided with perforations or slots permitting introduction or exit of wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2551/00—Means for control to be used by operator; User interfaces
- B65H2551/20—Display means; Information output means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2551/00—Means for control to be used by operator; User interfaces
- B65H2551/20—Display means; Information output means
- B65H2551/24—Sound or voice generating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Connection Or Junction Boxes (AREA)
Abstract
The invention discloses a bare wire storage protection device for electrical engineering, which relates to the technical field of electrical engineering devices and comprises a storage protection box, wherein a sealing mechanism is embedded in the top of the storage protection box, the bottom of the storage protection box is fixedly connected with a damping mechanism, and the upper side of the front end of the storage protection box is fixedly connected with a monitoring end; a plurality of wire inlet grooves are uniformly formed in the two opposite side ends of the storage protection box, and a separation mechanism is fixedly arranged in the storage protection box; the invention provides a method for protecting the wires of a storage protection box, which comprises the steps of opening a sealing cover mechanism, exposing the interior of the storage protection box, separating the exposed wires, winding the excess lengths, orderly embedding the wires into the storage protection box through a plurality of wire inlet grooves one by one, separating through a separating mechanism, adjusting proper intervals, facilitating the placement of the wires with different winding sizes, closing the sealing cover mechanism, storing and protecting the wires exposed outside, monitoring the temperature of the interior through a monitoring end during work, and placing, extruding and damaging the wires through a damping mechanism.
Description
Technical Field
The invention relates to the technical field of electrical engineering equipment, in particular to bare wire storage protection equipment for electrical engineering.
Background
Electrical engineering is the subject of electrical research, including power generation, transformation, transmission and distribution. The design, planning, scheduling, control and protection of a power system, the design, manufacture, test and detection of power equipment, and the electrical basic theory, namely a circuit theory and an electromagnetic field theory are researched, and the electrical installation needs planning and design and then installation and debugging.
After current electrical engineering equipment is installed, the electric wire that can have the connection in some areas exposes the condition outside, and is not only pleasing to the eye, and moreover, the electric wire exposes externally easily for a long time and accelerates ageing with ground friction, reduces life, and personnel of coming and going through tripping the electric wire when serious need set up a protection mechanism and pack up the protection with the exposed electric wire.
Disclosure of Invention
The invention provides a bare wire storage protection device for electrical engineering, which solves the technical problem.
In order to solve the technical problem, the invention provides a bare wire storage protection device for electrical engineering, which comprises a storage protection box, wherein a sealing cover mechanism is embedded at the top of the storage protection box, and the bottom of the containing protection box is fixedly connected with a damping mechanism, the damping mechanism comprises a damping box and springs, the bottom in the damping box is uniformly and fixedly connected with a plurality of springs, and the containing protection box is inserted into the slot damping box and is fixedly connected with a plurality of springs, the upper side of the front end of the containing protection box is fixedly connected with a monitoring end, an inner cavity is arranged at one end of the receiving protective box at the monitoring end and is communicated with the inside of the receiving protective box, a processing host and a temperature sensor are arranged in the inner cavity, two warning lamps are fixedly arranged at two opposite sides of the upper end of the monitoring end, a loudspeaker is fixedly arranged at the middle position, and a wireless module is fixedly connected to the side end of the monitoring end close to the processing host; a plurality of wire inlet grooves are evenly formed in the opposite side ends of the storage protection box, a separation mechanism is fixedly mounted inside the storage protection box and comprises a partition plate and two moving rails, the two moving rails are fixedly mounted on the opposite sides of the bottom in the storage protection box respectively, and a plurality of partition plates are movably connected to the upper ends of the two moving rails.
Furthermore, a moving groove is formed in the upper end of the moving track.
Furthermore, two opposite sides of the bottom of the partition board are symmetrically and fixedly connected with two moving blocks, and the partition board is slidably mounted in a moving groove of the moving track through the moving blocks.
Further, the whole shape of the moving block is convex, and the cross section shape of the moving groove is the same as that of the moving block.
Furthermore, the processing host is electrically connected with an external power supply, and the processing host is electrically connected with the wireless module, the warning lamp, the temperature sensor and the loudspeaker.
Further, the processing host is in wireless connection with an external control terminal through a wireless module.
Furthermore, a plurality of ventilation holes are uniformly formed in the surfaces of the front end and the rear end of the wire inlet groove and communicated with the inside of the storage protection box.
Further, the whole inverted convex shape of the capping mechanism.
Further, closing cap mechanism includes the apron, apron bottom fixedly connected with stores the box, and stores the box inside and fill and have the dry powder, store the box bottom and seted up out the powder mouth, and go out powder mouth department fixedly connected with polyethylene closing plate sealed.
Compared with the related art, the bare wire containing and protecting equipment for electrical engineering provided by the invention has the following beneficial effects:
the invention provides a method for protecting the wires of a storage protection box, which comprises the steps of opening a sealing mechanism, exposing the interior of the storage protection box, separating the exposed wires, winding the excess lengths, orderly embedding the wires into the storage protection box through a plurality of wire inlet grooves one by one, and finally closing the sealing mechanism to store and protect the wires exposed outside, thereby improving the safety and preventing the wires from contacting and rubbing the ground and being stumbled by pedestrians.
The invention provides a device, which is characterized in that when the device is extruded from the upper part, the storage protection box is contracted downwards into the damping box through the damping mechanism, a plurality of springs are extruded and contracted, the impact force of the downward pressing is offset through the rebounding of the stress of the springs, and the storage electric wires in the storage protection box are effectively protected.
According to the invention, through the monitoring end, the temperature sensor monitors the internal temperature of the storage protection box, when the internal temperature is raised to a set temperature value, the temperature sensor sends information to the processing host, the processing host wirelessly sends the information to the external control terminal through the wireless module, the processing host reminds workers of the abnormality of the equipment connected by the wires, and simultaneously controls the two warning lamps to light and flash, and the loudspeaker gives out an alarm sound, so that the safety is further improved, and the serious damage of the equipment connected by the wires is prevented.
According to the invention, by utilizing the cover sealing mechanism, when the electric wire in the storage protective box is spontaneously combusted, flame quickly combusts the polyethylene sealing plate, so that dry powder is poured out from the powder outlet, the flame in the storage protective box is extinguished, a serious fire is prevented, and the safety is further improved.
According to the invention, each partition plate moves in the moving grooves of the two moving tracks through the moving block through the separating mechanism according to the size of each wound electric wire, so that the proper interval is adjusted, and the electric wires with different winding sizes can be conveniently placed.
The invention provides a method for protecting the wires of a storage protection box, which comprises the steps of opening a sealing cover mechanism, exposing the interior of the storage protection box, separating the exposed wires, winding the redundant wires, orderly embedding the wires into the storage protection box through a plurality of wire inlet grooves, separating the wires through a separating mechanism, adjusting proper intervals, facilitating the placement of the wires with different winding sizes, closing the sealing cover mechanism, storing and protecting the wires exposed outside, monitoring the internal temperature through a monitoring end during work, placing and extruding damage through a damping mechanism, and effectively extinguishing a fire source through dry powder in the sealing cover mechanism when a fire disaster occurs in the storage protection box, thereby improving the safety.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is an overall rear view of the present invention;
FIG. 3 is a schematic diagram of the overall explosion of the present invention;
FIG. 4 is a schematic sectional view of the storage protection box and the damping mechanism of the present invention;
FIG. 5 is a schematic view of the separating mechanism of the present invention
FIG. 6 is an enlarged view of the invention at A;
FIG. 7 is a schematic front sectional view of the capping mechanism of the present invention.
Reference numbers in the figures: 1. a capping mechanism; 2. a storage protection box; 3. a damping mechanism; 4. a monitoring end; 5. a separation mechanism; 21. a vent hole; 22. a wire inlet groove; 31. a shock-absorbing box; 32. a spring; 41. a wireless module; 42. processing the host; 43. a warning light; 44. a temperature sensor; 45. a speaker; 51. a partition plate; 511. a moving block; 52. a moving track; 521. a moving groove; 11. a storage box; 12. a polyethylene seal plate; 13. dry powder; 14. and (7) a cover plate.
Detailed Description
In the first embodiment, as shown in fig. 1-4, the invention comprises a storage protection box 2, a capping mechanism 1 is embedded in the top of the storage protection box 2, a damping mechanism 3 is fixedly connected to the bottom of the storage protection box 2, a monitoring end 4 is fixedly connected to the upper side of the front end of the storage protection box 2, a plurality of wire inlet slots 22 are uniformly formed in two opposite side ends of the storage protection box 2, and a separation mechanism 5 is fixedly installed in the storage protection box 2; a plurality of vent holes 21 are uniformly formed in the front and rear end surfaces of the wire inlet groove 22 and communicated with the interior of the storage protection box 2;
wherein, open closing cap mechanism 1, will accomodate inside the exposing of protective housing 2, then will expose the electric wire separately to with unnecessary length rolling, with the electric wire through a plurality of inlet wire grooves 22 neatly inlay to accomodate protective housing 2 one by one, separate through separating mechanism 5, close closing cap mechanism 1 mechanism at last again.
In the second embodiment, on the basis of the first embodiment, the damping mechanism 3 includes a damping box 31 and springs 32, a plurality of springs 32 are uniformly and fixedly connected to the bottom of the damping box 31, and the accommodating protection box 2 is inserted into the damping box 31 and fixedly connected to the plurality of springs 32;
wherein, when equipment top extrusion, accomodate protective housing 2 and receive into the shock attenuation box 31 downwards, extrude the shrink with a plurality of springs 32, through spring 32 atress bounce-back, offset the impact force of pushing down, effectively protect the electric wire of accomodating in the protective housing 2.
In the third embodiment, on the basis of the first embodiment, an inner cavity is formed in one end, located at the storage protection box 2, of the monitoring end 4 and is communicated with the interior of the storage protection box 2, a processing host 42 and a temperature sensor 44 are arranged in the inner cavity, two warning lamps 43 are fixedly mounted on two opposite sides of the upper end of the monitoring end 4, a loudspeaker 45 is fixedly mounted in the middle of the monitoring end, and a wireless module 41 is fixedly connected to the side end, close to the processing host 42, of the monitoring end 4; the processing host 42 is electrically connected with an external power supply, and the processing host 42 is electrically connected with the wireless module 41, the warning light 43, the temperature sensor 44 and the speaker 45; the processing host 42 is wirelessly connected with an external control terminal through the wireless module 41;
wherein, to handle host computer 42 and connect the power, monitor the inside temperature of taking in protection box 2 through temperature sensor 44, when inside temperature heaies up to the settlement temperature value, temperature sensor 44 sends information for handling host computer 42, it sends information wireless for external control terminal through wireless module 41 to handle host computer 42, remind staff's wired connection's equipment to appear unusually, and two warning lights 43 of simultaneous control light up the scintillation, speaker 45 sends the alarm sound, further improve the security, prevent that wired connection equipment from being impaired seriously.
In the fourth embodiment, based on the first embodiment, as shown in fig. 5 to 6, the partition mechanism 5 includes two partition plates 51 and two moving rails 52, the two moving rails 52 are respectively and fixedly installed at two opposite sides of the bottom in the storage protection box 2, and the upper ends of the two moving rails 52 are movably connected with the plurality of partition plates 51; the upper end of the moving track 52 is provided with a moving groove 521; two moving blocks 511 are symmetrically and fixedly connected to opposite sides of the bottom of the partition plate 51, and the partition plate 51 is slidably mounted in a moving groove 521 of the moving track 52 through the moving blocks 511; the moving block 511 has a convex shape as a whole, and the sectional shape of the moving groove 521 is the same as that of the moving block 511;
according to the size of each wound electric wire, each partition plate 51 moves in the moving grooves 521 of the two moving tracks 52 through the moving block 511, the proper interval is adjusted, the electric wires with different winding sizes can be conveniently placed, and finally the mechanism of the cover sealing mechanism 1 is closed.
Fifth embodiment, on the basis of the first embodiment, as shown in fig. 7, the capping mechanism 1 includes a cover plate 14, the bottom of the cover plate 14 is fixedly connected with a storage box 11, dry powder 13 is filled in the storage box 11, the bottom of the storage box 11 is provided with a powder outlet, and the powder outlet is fixedly connected with a polyethylene sealing plate 12 for sealing;
wherein, pack in the storage box 11 of apron 14 lower extreme and have a large amount of dry powders 13, when taking in the inside electric wire of protective box 2 and appear spontaneous combustion, flame is with polyethylene closing plate 12 fast combustion to dry powder 13 pours out from a powder mouth, and the flame that will take in protective box 2 is put out, prevents to cause serious conflagration, further improves the security.
In this embodiment: a temperature sensor 44, model TC10K, is used.
The working principle is as follows:
when the device is used, the cover sealing mechanism 1 is opened, the interior of the storage protective box 2 is exposed, then the exposed wires are separated, the redundant wires are wound, the wires are orderly embedded into the storage protective box 2 through the plurality of wire inlet grooves 22 one by one, the wires are separated through the plurality of partition plates 51, each partition plate 51 moves in the moving grooves 521 of the two moving tracks 52 through the moving block 511 according to the size of each wound wire, the proper interval is adjusted, the wires with different winding sizes can be conveniently placed, and finally the cover sealing mechanism 1 is closed;
when the intelligent storage protection box works, the processing host 42 is connected with a power supply, the internal temperature of the storage protection box 2 is monitored through the temperature sensor 44, when the internal temperature is raised to a set temperature value, the temperature sensor 44 sends information to the processing host 42, the processing host 42 wirelessly sends the information to an external control terminal through the wireless module 41, the staff is reminded that equipment connected with wires is abnormal, the two warning lamps 43 are controlled to light and flash at the same time, and the loudspeaker 45 gives out warning sound, so that the safety is further improved, and the electric wire connection equipment is prevented from being seriously damaged;
when the equipment is extruded from the upper part, the storage protection box 2 is retracted downwards into the damping box 31, the plurality of springs 32 are compressed and retracted, the springs 32 are rebounded under stress, the downward impact force is offset, and the storage wires in the storage protection box 2 are effectively protected;
the storage box 11 at the lower end of the cover plate 14 is filled with a large amount of dry powder 13, when the electric wire in the storage protection box 2 is spontaneously combusted, the polyethylene sealing plate 12 is rapidly combusted by flame, so that the dry powder 13 is poured out from the powder outlet, the flame in the storage protection box 2 is extinguished, a serious fire is prevented, and the safety is further improved.
Claims (9)
1. The utility model provides a protection equipment is accomodate with naked electric wire to electrical engineering, is including accomodating protective box (2), its characterized in that: the top of the storage protection box (2) is inlaid with a sealing cover mechanism (1), the bottom of the storage protection box (2) is fixedly connected with a damping mechanism (3), the damping mechanism (3) comprises a damping box (31) and springs (32), the bottom in the damping box (31) is uniformly and fixedly connected with the springs (32), the storage protection box (2) is inserted into the damping box (31) and is fixedly connected with the springs (32), the upper side of the front end of the storage protection box (2) is fixedly connected with a monitoring end (4), one end of the monitoring end (4) located at the storage protection box (2) is provided with an inner cavity which is communicated with the interior of the storage protection box (2), a processing host (42) and a temperature sensor (44) are arranged in the inner cavity, two opposite sides of the upper end of the monitoring end (4) are fixedly provided with two warning lamps (43), and a loudspeaker (45) is fixedly arranged at the middle position, the side end of the monitoring end (4) close to the processing host (42) is fixedly connected with a wireless module (41); accomodate protection box (2) opposite both sides end and evenly seted up a plurality of inlet wire grooves (22), and accomodate the inside fixed mounting of protection box (2) and have partition mechanism (5), partition mechanism (5) are including baffle (51) and removal track (52), removal track (52) are provided with two, two removal track (52) fixed mounting is in the opposite both sides of bottom in accomodating protection box (2) respectively, two removal track (52) upper end swing joint has a plurality of baffles (51).
2. The bare wire storage and protection device for electrical engineering according to claim 1, wherein the upper end of the moving rail (52) is provided with a moving groove (521).
3. The bare wire storage and protection device for electrical engineering according to claim 2, wherein two moving blocks (511) are symmetrically and fixedly connected to opposite sides of the bottom of the partition plate (51), and the partition plate (51) is slidably mounted in the moving groove (521) of the moving track (52) through the moving blocks (511).
4. The bare wire storage and protection device for electrical engineering according to claim 3, wherein the moving block (511) has a convex shape as a whole, and the cross-sectional shape of the moving groove (521) is the same as that of the moving block (511).
5. The bare wire storage protection device for electrical engineering according to claim 1, wherein the processing host (42) is electrically connected to an external power source, and the processing host (42) is electrically connected to the wireless module (41), the warning light (43), the temperature sensor (44) and the speaker (45).
6. The bare wire storage protection device for electrical engineering according to claim 5, wherein the processing host (42) is wirelessly connected with an external control terminal through a wireless module (41).
7. The bare wire storage and protection device for electrical engineering according to claim 1, wherein a plurality of vent holes (21) are uniformly formed on the front and rear end surfaces of the wire inlet groove (22) to communicate with the inside of the storage and protection box (2).
8. The bare wire storage and protection device for electrical engineering according to claim 1, wherein the capping mechanism (1) has an inverted convex shape as a whole.
9. The bare wire storage and protection device for electrical engineering according to claim 1, wherein the cover mechanism (1) comprises a cover plate (14), a storage box (11) is fixedly connected to the bottom of the cover plate (14), dry powder (13) is filled in the storage box (11), a powder outlet is formed in the bottom of the storage box (11), and a polyethylene sealing plate (12) is fixedly connected to the powder outlet for sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210053871.4A CN114212623A (en) | 2022-01-18 | 2022-01-18 | Electrical engineering accomodates protective apparatus with naked electric wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210053871.4A CN114212623A (en) | 2022-01-18 | 2022-01-18 | Electrical engineering accomodates protective apparatus with naked electric wire |
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| Publication Number | Publication Date |
|---|---|
| CN114212623A true CN114212623A (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210053871.4A Pending CN114212623A (en) | 2022-01-18 | 2022-01-18 | Electrical engineering accomodates protective apparatus with naked electric wire |
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| CN112398064A (en) * | 2020-10-30 | 2021-02-23 | 广州时莱科技有限公司 | Line fixing and protecting device for rail transit |
| CN214674124U (en) * | 2021-06-05 | 2021-11-09 | 刘冰 | Novel distribution engineering cable bridge device |
| CN113572096A (en) * | 2021-08-18 | 2021-10-29 | 镇江腾宇电能设备有限公司 | Insulating fire-resistant cable groove box |
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