CN111952890A - Wire coil supporting and fixing device for electric power construction - Google Patents
Wire coil supporting and fixing device for electric power construction Download PDFInfo
- Publication number
- CN111952890A CN111952890A CN202010827707.5A CN202010827707A CN111952890A CN 111952890 A CN111952890 A CN 111952890A CN 202010827707 A CN202010827707 A CN 202010827707A CN 111952890 A CN111952890 A CN 111952890A
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- CN
- China
- Prior art keywords
- groove
- wall
- rod
- sliding
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
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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
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/02—Arrangements for removing spent cores or receptacles and replacing by supply packages at paying-out stations
-
- 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
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- Transmission Devices (AREA)
Abstract
The invention discloses a wire coil supporting and fixing device for electric power construction, which comprises a vehicle body, wherein the vehicle body is provided with a movable groove which penetrates through the left side and the right side and has an upward opening, the bottom wall of the vehicle body is provided with a groove with a downward opening, the bottom wall of the movable groove is provided with a lifting groove with an upward opening, a lifting worm shaft which extends up and down is rotatably arranged between the lifting groove and the groove, the front wall and the rear wall of the groove are rotatably provided with rotating shafts, the rotating shafts are fixedly provided with turnover worm gears which are meshed with the lifting worm shafts, the rotating shafts are symmetrically and fixedly provided with rocking bars at the front side and the rear side of the turnover worm gears, and the lower side of each rocking bar is rotatably connected with a supporting block.
Description
Technical Field
The invention relates to the technical field related to electric power construction, in particular to a wire coil supporting and fixing device for electric power construction.
Background
The cable is usually the winding on the dish utensil, and in general electric power construction process, workman need carry great charging tray, carries out real-time unwrapping wire as required in the course of the work, and current charging tray unwrapping wire is comparatively loaded down with trivial details, needs the workman to walk around the charging tray when putting down on the ground, puts on the support frame, and easy unwrapping wire overlength is withdrawed difficultly, and the cable drags ground easily moreover, is infected with the dust waste material, influences workman's work.
Disclosure of Invention
Aiming at the technical defects, the invention provides a wire coil supporting and fixing device for electric power construction, which can overcome the defects.
The invention relates to a wire coil supporting and fixing device for electric power construction, which comprises a vehicle body, wherein the vehicle body is provided with a movable groove which penetrates through the left side and the right side and is provided with an upward opening, the bottom wall of the vehicle body is provided with a groove with a downward opening, the bottom wall of the movable groove is provided with an upward opening lifting groove, a lifting worm shaft which extends up and down is rotatably arranged between the lifting groove and the groove, the front wall and the rear wall of the groove are rotatably provided with rotating shafts, the rotating shafts are fixedly provided with rocking rods which are meshed with the lifting worm shaft, the front side and the rear side of each rotating shaft are symmetrically and fixedly provided with rocking rods, the lower side of each rocking rod is rotatably connected with a supporting block, the right side of each supporting block is fixedly connected with a fixed inclined rod, the upper ends of the fixed inclined rods are respectively matched with the front wall and the rear wall of the groove in, the transmission worm wheel is meshed with the linking worm shaft, the bottom wall of the movable groove is symmetrically provided with limiting cavities at the left side and the right side of the lifting groove, the linking worm shaft extends left and right and penetrates and is rotatably connected with the inner wall of the limiting cavity, the linking worm shaft extends left and extends out of the vehicle body to be fixedly connected with a rotary disc, the vehicle body is symmetrically provided with wheel cavities at the front side and the rear side of the limiting cavity, the front wall and the rear wall of the limiting cavity are rotatably provided with wheel shafts extending front and rear, the wheel shafts are fixedly connected with wheels in the wheel cavities, the wheel shafts are fixedly connected with locking blocks in the limiting cavities, the outer walls of the locking blocks are symmetrically provided with annular grooves front and rear, the linking worm shaft is internally threaded with linking slide blocks, the linking slide blocks are in sliding fit with the top wall of the limiting cavity, the lower end of the propelling rocker extends into the annular groove and is rotatably connected with a pressure rod rack, the front side wall and the rear side wall of the movable groove are respectively provided with a support groove with an upward opening and a front-back penetrating through opening, the left side wall of the support groove is provided with a containing groove, the right side wall of the support groove is provided with a locking groove, an inclined plane clamping rod is slidably mounted in the containing groove, an extensible overturning shaft is rotatably mounted in the containing groove and extends out of the automobile body fixedly connected with a wrench, the overturning shaft is fixedly connected with a transmission gear in the containing groove, a pressure rod rack is slidably mounted on the bottom wall of the containing groove, the pressure rod rack is meshed and connected with the transmission gear, the left side wall and the right side wall of the support groove are provided with swing grooves at the lower sides of the containing groove and the locking groove, fixed guide rods are fixedly mounted, the movable block is characterized in that the left end and the right end of the movable block are symmetrically and rotatably connected with supporting rockers, the supporting rockers are provided with guide grooves which are penetrated through from front to back, the supporting rockers stretch into connecting lock chains fixedly connected with the swing grooves, the connecting lock chains penetrate through and are in sliding fit with the inner walls of the swing grooves, the connecting lock chains are fixedly connected with the compression bar racks, and the fixed guide rods penetrate through and are in sliding fit with the inner walls of the guide grooves.
Preferably, the trip shaft in accomodate inslot fixedly connected with sprocket, the winding is connected with the chain on the sprocket, the chain with inclined plane kelly fixed connection, the inclined plane kelly passes through spring coupling accomodate inslot wall, the inclined plane kelly stretches into the through hole that runs through about the locking groove is equipped with, the automobile body in locking groove downside is equipped with the transition chamber, the transition chamber with wall body slidable mounting between the locking groove has the locking lever that extends from top to bottom, the locking lever with through hole sliding fit.
Preferably, the front side wall and the rear side wall of the movable groove are provided with storage sliding grooves with openings on the left side and the upper side of the limiting cavity, sliding rods are arranged in the storage sliding grooves in a sliding mode, clamping idler wheels are rotatably connected to the sliding rods through shafts, and the sliding rods are connected with the inner walls of the storage sliding grooves through springs.
Preferably, accomodate the spout downside and be equipped with the turn trough, rotate on the lateral wall behind the turn trough and install the linking axle that extends backward, link up the axle in turn trough internal fixation connects the linking gear, turn trough and left side wall body slidable mounting between the spacing chamber has the rack of extending from beginning to end, the rack with linking gear engagement connects, the rack in spacing intracavity rotates and is connected with the connection rocker, connect the rocker with link up the slider and rotate and connect.
Preferably, the connecting shaft extends backwards to penetrate through and is connected with the inner wall of the transition cavity in a rotating mode, a screw rod is rotatably mounted on the bottom wall of the connecting shaft and is in threaded connection with the locking rod, and the connecting shaft is connected with the screw rod through a connecting bevel gear set.
The beneficial effects are that: this device simple structure, convenient operation rotates the carousel through the manual work and makes the device change at fixed or active state, makes the device can control the activity of charging tray under different states, when removing, restricts the charging tray and rotates to the fixing clip pole makes the stay tube that supports the charging tray can not move about, when fixed, through the activity of pressing from both sides tight gyro wheel control cable, and accessible spanner activity makes the stay tube can dismantle, conveniently changes the charging tray.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a wire coil supporting and fixing device for electric power construction according to the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line B-B in FIG. 1;
fig. 4 is a schematic cross-sectional view taken at C-C in fig. 3.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations and/or steps that are mutually exclusive.
The invention will now be described in detail with reference to fig. 1-4, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a wire coil supporting and fixing device for electric power construction, which comprises a vehicle body 19, wherein the vehicle body 19 is provided with a movable groove 18 which penetrates through the left and right and has an upward opening, the bottom wall of the vehicle body 19 is provided with a groove 26 with a downward opening, the bottom wall of the movable groove 18 is provided with an upward opening lifting groove 17, a lifting worm shaft 25 which extends up and down is rotatably arranged between the lifting groove 17 and the groove 26, the front and rear walls of the groove 26 are rotatably provided with a rotating shaft 21, the rotating shaft 21 is fixedly provided with a turnover worm wheel 20 which is engaged with the lifting worm shaft 25, the front and rear sides of the turnover worm wheel 20 are symmetrically and fixedly provided with a rocker 22 on the rotating shaft 21, the lower side of the rocker 22 is rotatably connected with a supporting block 23, the right side of the supporting block 23 is fixedly connected with a fixed inclined rod 24, the upper ends of the fixed inclined rod 24 are respectively in sliding fit with the, the lifting worm shaft 25 is fixedly connected with a transmission worm wheel 16 in the lifting groove 17, the transmission worm wheel 16 is meshed with the connecting worm shaft 15, the bottom wall of the movable groove 18 is symmetrically provided with limit cavities 40 at the left and right sides of the lifting groove 17, the connecting worm shaft 15 extends left and right and penetrates and is rotatably connected with the inner wall of the limit cavity 40, the connecting worm shaft 15 extends left and extends out of the vehicle body 19 to be fixedly connected with a turntable 14, the vehicle body 19 is symmetrically provided with wheel cavities 42 at the front and rear sides of the limit cavity 40, the front and rear walls of the limit cavity 40 are rotatably provided with wheel shafts 43 extending front and rear, the wheel shafts 43 are fixedly connected with wheels 41 in the wheel cavities 42, the wheel shafts 43 are fixedly connected with locking blocks 44 in the limit cavities 40, the outer walls of the locking blocks 44 are symmetrically provided with annular grooves 45 front and rear, and the connecting worm shaft 15 is internally connected with a connecting slide block 39, the engaging sliding block 39 is in sliding fit with the top wall of the limiting cavity 40, the front side wall and the rear side wall of the engaging sliding block 39 are both rotatably provided with an advancing rocker 46, the lower end of the advancing rocker 46 extends into the annular groove 45 and is rotatably connected with a pressure rod rack 53, the front side wall and the rear side wall of the movable groove 18 are both provided with a supporting groove 35 with an upward opening and a front-rear penetrating through, the left side wall of the supporting groove 35 is provided with a containing groove 29, the right side wall of the supporting groove 35 is provided with a locking groove 33, the containing groove 29 is internally and slidably provided with an inclined clamping rod 31, the containing groove 29 is rotatably provided with an extensible overturning shaft 38, the overturning shaft 38 extends out of the vehicle body 19 and is fixedly connected with a wrench 37, the overturning shaft 38 is fixedly connected with a transmission gear 30 in the containing groove 29, the bottom wall of the containing groove 29, support about the groove 35 lateral wall in accomodate groove 29 with locking groove 33 downside is equipped with swing groove 56, fixed mounting has fixed guide arm 57 on the wall around swing groove 56, slidable mounting has movable block 54 on supporting groove 35 diapire, the end symmetry rotates about movable block 54 and is connected with support rocker 55, support rocker 55 is equipped with the guide way 58 that runs through around, support rocker 55 stretches into swing groove 56 fixedly connected with connects the chain 59, connect chain 59 and run through and sliding fit swing groove 56 inner wall, connect the chain 59 with depression bar rack 53 fixed connection, fixed guide arm 57 runs through and sliding fit guide way 58 inner wall.
Beneficially, trip shaft 38 in accomodate groove 29 internal fixed connection has sprocket 28, the winding is connected with chain 36 on the sprocket 28, chain 36 with inclined plane kelly 31 fixed connection, inclined plane kelly 31 passes through spring coupling accomodate groove 29 inner wall, inclined plane kelly 31 stretches into through-hole 34 that runs through from top to bottom is equipped with to locking groove 33, automobile body 19 in locking groove 33 downside is equipped with transition chamber 60, transition chamber 60 with wall body slidable mounting between the locking groove 33 has locking lever 32 of extending from top to bottom, locking lever 32 with through-hole 34 sliding fit.
Beneficially, the front and rear side walls of the movable groove 18 are provided with a storage chute 11 with an opening at the upper side of the limit cavity 40 at the left side, a sliding rod 13 is slidably mounted in the storage chute 11, a clamping roller 12 is rotatably connected to the sliding rod 13 through a shaft, and the sliding rod 13 is connected to the inner wall of the storage chute 11 through a spring.
Beneficially, a rotary groove 49 is arranged at the lower side of the accommodating sliding groove 11, an engaging shaft 51 extending backwards is rotatably mounted on the rear side wall of the rotary groove 49, the engaging shaft 51 is fixedly connected with an engaging gear 50 in the rotary groove 49, a rack 48 extending forwards and backwards is slidably mounted on the wall body between the rotary groove 49 and the limiting cavity 40 at the left side, the rack 48 is in meshed connection with the engaging gear 50, a connecting rocker 47 is rotatably connected to the rack 48 in the limiting cavity 40, and the connecting rocker 47 is rotatably connected with the engaging slider 39.
Advantageously, the connecting shaft 51 extends backwards and is rotatably connected with the inner wall of the transition cavity 60, a screw 61 is rotatably mounted on the bottom wall of the connecting shaft 51, the screw 61 is in threaded connection with the locking rod 32, and the connecting shaft 51 is connected with the screw 61 through a connecting bevel gear set 62.
In an initial state, the pressure rod rack 53 is contacted with the bottom wall of the annular groove 45, the supporting block 23 and the rocker 22 extend out of the groove 26, the top block 52 is received in the lifting groove 17, the locking rod 32 is separated from the through hole 34, and the sliding rod 13 extends out of the receiving chute 11; when the cable clamp starts to work, the material tray and the supporting pipe are placed in the movable groove 18, the supporting pipe is placed in the supporting groove 35, and the sliding rod 13 drives the clamping roller 12 to fix the cable under the action of the spring.
When the material tray needs to be driven to move, the rotating disc 14 is rotated, the rotating disc 14 drives the connecting worm shaft 15 to rotate, the connecting worm shaft 15 drives the lifting worm shaft 25 to rotate through the transmission worm wheel 16, the lifting worm shaft 25 drives the top block 52 to extend out of the lifting groove 17, the top block 52 supports the material tray, the lifting worm shaft 25 drives the rotating shaft 21 to rotate through the overturning worm wheel 20, the rotating shaft 21 drives the supporting block 23 to rotate through the rocker 22, the supporting block 23 drives the fixed inclined rod 24 to be accommodated in the groove 26, the connecting worm shaft 15 simultaneously drives the connecting slide block 39 to move, the connecting slide block 39 drives the pressure rod rack 53 to move through the pushing rocker 46, the pressure rod rack 53 is separated from the bottom wall of the annular groove 45, the wheel shaft 43 can rotate, the connecting slide block 39 drives the rack 48 to slide through the connecting rocker 47, the rack 48 drives the connecting gear 50 to rotate, the connecting gear 50, the engaging shaft 51 drives the screw rod 61 to rotate through the engaging bevel gear set 62, the screw rod 61 drives the locking rod 32 to move upwards, the locking rod 32 extends into the through hole 34, and the supporting pipe limits movement.
When the line is paid out, the turntable 14 is reversed and the device is restored.
When the material tray is taken down after the work is finished, the wrench 37 is pressed, the wrench 37 drives the turnover shaft 38 to rotate, the turnover shaft 38 drives the chain wheel 28 and the transmission gear 30 to rotate, the chain wheel 28 drives the inclined plane clamping rod 31 to move and be received in the receiving groove 29 through the chain 36, the transmission gear 30 drives the pressure rod rack 53 to move, the pressure rod rack 53 drives the support rocker 55 to swing through connecting the chain 59, the left and right side support rockers 55 swing to drive the movable block 54 to move upwards, the movable block 54 drives the support tube to be lifted and conveniently taken out, and the device returns to the initial state.
Has the advantages that: this device simple structure, convenient operation rotates the carousel through the manual work and makes the device change at fixed or active state, makes the device can control the activity of charging tray under different states, when removing, restricts the charging tray and rotates to the fixing clip pole makes the stay tube that supports the charging tray can not move about, when fixed, through the activity of pressing from both sides tight gyro wheel control cable, and accessible spanner activity makes the stay tube can dismantle, conveniently changes the charging tray.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (5)
1. The utility model provides a drum supports fixing device for electric power construction, includes the automobile body, its characterized in that: the vehicle body is provided with a movable groove which penetrates through the left side and the right side and has an upward opening, the bottom wall of the vehicle body is provided with a groove with a downward opening, the bottom wall of the movable groove is provided with a lifting groove with an upward opening, a lifting worm shaft which extends up and down is rotatably arranged between the lifting groove and the groove, the front wall and the rear wall of the groove are rotatably provided with rotating shafts, the rotating shafts are fixedly provided with turnover worm wheels which are meshed with the lifting worm shaft, the front side and the rear side of each turnover worm wheel are symmetrically and fixedly provided with rocking rods, the lower side of each rocking rod is rotatably connected with a supporting block, the right side of each supporting block is fixedly connected with a fixed inclined rod, the upper end of each fixed inclined rod is respectively in sliding fit with the front wall and the rear wall of the groove, the left wall and the right wall of the lifting groove are rotatably provided, the bottom wall of the movable groove is symmetrically provided with limiting cavities at the left side and the right side of the lifting groove, the linking worm shaft extends left and right to penetrate through and is rotatably connected with the inner wall of the limiting cavity, the linking worm shaft extends left to extend out of the vehicle body and is fixedly connected with a rotary disc, the vehicle body is symmetrically provided with wheel cavities at the front side and the rear side of the limiting cavity, the front wall and the rear wall of the limiting cavity are rotatably provided with wheel shafts extending front and rear, the wheel shafts are fixedly connected with wheels in the wheel cavities, the wheel shafts are fixedly connected with locking blocks in the limiting cavities, the outer walls of the locking blocks are symmetrically provided with annular grooves front and rear, the linking worm shaft is internally threaded with linking slide blocks in the linking worm shaft, the linking slide blocks are in sliding fit with the top wall of the limiting cavity, the front side wall and the rear, the front side wall and the rear side wall of the movable groove are respectively provided with a supporting groove with an upward opening and a front-back penetrating through, the left side wall of the supporting groove is provided with a containing groove, the right side wall of the supporting groove is provided with a locking groove, an inclined plane clamping rod is arranged in the containing groove in a sliding manner, an extensible overturning shaft is arranged in the containing groove in a front-back rotating manner, the overturning shaft extends out of the wrench fixedly connected with the vehicle body, the overturning shaft is fixedly connected with a transmission gear in the containing groove, a pressing rod rack is arranged on the bottom wall of the containing groove in a sliding manner, the pressing rod rack is connected with the transmission gear in a meshing manner, the left side wall and the right side wall of the supporting groove are provided with swinging grooves at the lower sides of the containing groove and the locking groove, a fixed guide rod is fixedly arranged on the front wall and the rear wall of the swinging grooves, the support rocker stretches into swing groove fixedly connected with connects the chain, connect the chain run through and sliding fit the swing inslot wall, connect the chain with depression bar rack fixed connection, fixed guide arm runs through and sliding fit the guide way inner wall.
2. The wire coil supporting and fixing device for power construction as claimed in claim 1, wherein: the trip shaft in accomodate inslot fixedly connected with sprocket, the winding is connected with the chain on the sprocket, the chain with inclined plane kelly fixed connection, the inclined plane kelly passes through spring coupling accomodate inslot wall, the inclined plane kelly stretches into the through hole that runs through about the locking groove is equipped with, the automobile body in locking groove downside is equipped with the transition chamber, the transition chamber with wall body slidable mounting between the locking groove has the locking lever that extends from top to bottom, the locking lever with through hole sliding fit.
3. The wire coil supporting and fixing device for power construction as claimed in claim 1, wherein: the movable groove front and rear side walls are provided with an accommodating sliding groove with an opening on the left side of the limiting cavity, a sliding rod is arranged in the accommodating sliding groove in a sliding mode, a clamping roller is rotatably connected to the sliding rod through a shaft, and the sliding rod is connected with the inner wall of the accommodating sliding groove through a spring.
4. The wire coil supporting and fixing device for power construction as claimed in claim 1, wherein: accomodate the spout downside and be equipped with the turn trough, rotate on the lateral wall behind the turn trough and install the linking axle that extends backward, link up the axle in turn trough internal fixation connects the linking gear, turn trough and left side wall body slidable mounting between the spacing chamber has the rack of extending around, the rack with linking gear engagement connects, the rack in spacing intracavity rotates and is connected with the connection rocker, connect the rocker with it rotates to link up the slider and connects.
5. The wire coil supporting and fixing device for power construction as claimed in claim 1, wherein: the connecting shaft extends backwards to penetrate through and is connected with the inner wall of the transition cavity in a rotating mode, a screw rod is installed on the bottom wall of the connecting shaft in a rotating mode, the screw rod is in threaded connection with the locking rod, and the connecting shaft is connected with the screw rod through a connecting bevel gear set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010827707.5A CN111952890A (en) | 2020-08-17 | 2020-08-17 | Wire coil supporting and fixing device for electric power construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010827707.5A CN111952890A (en) | 2020-08-17 | 2020-08-17 | Wire coil supporting and fixing device for electric power construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111952890A true CN111952890A (en) | 2020-11-17 |
Family
ID=73342624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010827707.5A Withdrawn CN111952890A (en) | 2020-08-17 | 2020-08-17 | Wire coil supporting and fixing device for electric power construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111952890A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563996A (en) * | 2021-01-06 | 2021-03-26 | 南京凯火阳电子商务有限公司 | Emergent electric power transmission device that prevents catching fire |
-
2020
- 2020-08-17 CN CN202010827707.5A patent/CN111952890A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563996A (en) * | 2021-01-06 | 2021-03-26 | 南京凯火阳电子商务有限公司 | Emergent electric power transmission device that prevents catching fire |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201117 |
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| WW01 | Invention patent application withdrawn after publication |