CN213937300U - Electric power engineering cable laying bridge - Google Patents
Electric power engineering cable laying bridge Download PDFInfo
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- CN213937300U CN213937300U CN202023021369.0U CN202023021369U CN213937300U CN 213937300 U CN213937300 U CN 213937300U CN 202023021369 U CN202023021369 U CN 202023021369U CN 213937300 U CN213937300 U CN 213937300U
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- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000009826 distribution Methods 0.000 claims description 5
- 238000004870 electrical engineering Methods 0.000 claims 8
- 230000000694 effects Effects 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 6
- 239000000725 suspension Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The application relates to a cable laying bridge frame for power engineering, which belongs to the technical field of indoor cable laying and comprises an upper bridge, wherein the upper bridge is arranged in a shell with a hollow inner part and an opening at the bottom end; the upper bridge is also provided with a plurality of connecting pieces for mounting the upper bridge on a roof; the cable fixing device is characterized by also comprising a plurality of groups of mounting plates capable of fixing cables, wherein the mounting plates are connected in the upper bridge, and the mounting plates in each group are arranged at intervals along the height direction; each all be provided with latch mechanism on the mounting panel, latch mechanism fixes the mounting panel in last bridge. This application has the effect that improves indoor cable laying efficiency of construction.
Description
Technical Field
The application relates to the technical field of indoor cable laying, in particular to a cable laying bridge frame for power engineering.
Background
The indoor cable bridge is mainly used for laying cables indoors, supports and shields the cables, meets the requirement of laying the cables indoors, and does not affect the indoor attractiveness.
At present, a cable bridge generally adopts a U-shaped shell with an upward opening, and cables are laid in the shell, but the cables need to be firstly installed on the shell, and then the shell and the cables are lifted together to be installed on an indoor roof.
Disclosure of Invention
In order to improve the convenience when laying the cable in the room, this application provides a power engineering cable laying crane span structure.
The application provides a power engineering cable laying crane span structure adopts following technical scheme:
a cable laying bridge frame for power engineering comprises an upper bridge, wherein the upper bridge is arranged in a shell with a hollow interior and an opening at the bottom end; the upper bridge is also provided with a plurality of connecting pieces for mounting the upper bridge on a roof; the cable fixing device is characterized by also comprising a plurality of groups of mounting plates capable of fixing cables, wherein the mounting plates are connected in the upper bridge, and the mounting plates in each group are arranged at intervals along the height direction; each all be provided with latch mechanism on the mounting panel, latch mechanism fixes the mounting panel in last bridge.
By adopting the technical scheme, the upper bridge is installed on the roof by using the connecting piece, then a plurality of cables are fixed on each installation plate, the plurality of cables are fixed into one row by the installation plates, then the installation plates are pushed upwards into the upper bridge from the bottom opening of the upper bridge, the installation plates are fixed in the upper bridge by the clamping mechanism, after each installation plate is fixed in sequence, the steps are repeated until each row of cables is fixed in the upper bridge, and the laying work of the cables is completed; because the opening of going up the bridge is towards the below, be convenient for follow-up in laying the bridge with the cable, improve the convenience of laying the cable, reduce workman's efficiency of construction.
Optionally, the clamping mechanism comprises a rotating shaft rotatably connected to the mounting plate, at least two positioning plates fixedly arranged on the rotating shaft, and a limiting assembly arranged on the mounting plate and used for limiting the rotating shaft to rotate only in one direction;
a plurality of even interval distribution of circumference of axis of rotation is followed to the locating plate, go up the bridge and set firmly a plurality of baffles on along the inside wall of horizontal direction, the direction of height interval distribution of last bridge is followed to a plurality of baffles, a plurality of baffles and a plurality of mounting panel one-to-one, one of them locating plate butt in the latch mechanism on the mounting panel is on the locating plate, just spacing subassembly makes this locating plate can't upwards rotate.
By adopting the technical scheme, when the mounting plate is pushed upwards into the upper bridge, one of the positioning plates can abut against the lower part of the lowest baffle plate, the mounting plate is continuously pushed upwards, the positioning plate can rotate downwards under the reaction force of the baffle plate, and meanwhile, the rotating shaft and the other positioning plates are driven to rotate, so that the mounting plate can continuously move upwards; and when the next row of mounting panel was installed, when continuing upwards to promote next mounting panel, the mounting panel of below still can continue to drive the mounting panel rebound of top behind the mounting panel of top to be convenient for workman's successive layer lay the cable in last bridge.
Optionally, the limiting assembly comprises an one-way plate hinged to the mounting plate, a limiting plate fixedly arranged on the mounting plate and a torsional spring arranged on a hinge joint of the baffle plate, the limiting plate is located below the one-way plate, the torsional spring enables the one-way plate to keep the butt on the limiting plate and is located above the one-way plate through the locating plate butt, far away from one side of the baffle plate, of the rotating shaft.
Through adopting above-mentioned technical scheme, when upwards promoting the mounting panel, the locating plate rotates from the one-way plate below, promotes the one-way plate and upwards rotates, makes the locating plate can pass through the one-way plate smoothly, otherwise under the restriction of limiting plate, can't promote the one-way plate and remove when making the locating plate rotate from the top of one-way plate below to play and make the axis of rotation unidirectional rotation's function only.
Through adopting above-mentioned technical scheme, the reference column plays the positioning action to the interval of every two adjacent mounting panels, extrudees the cable when preventing the mounting panel rebound of below to play the protection effect to the cable.
Optionally, the bottom opening of the upper bridge is detachably connected with a lower bridge, and the lower bridge closes the bottom opening of the upper bridge.
Optionally, the upper bridge comprises a top plate, and a first side plate and a second side plate which are respectively arranged on two sides of the top plate, the plurality of mounting plates are located between the first side plate and the second side plate, the first side plate is detachably connected with the top plate, and the second side plate is fixedly connected with the top plate.
Through adopting above-mentioned technical scheme, because the bottom opening of difficult follow-up bridge takes out after the mounting panel installation, if the cable fault of being qualified for the next round of competitions when needing to overhaul, can pull down first curb plate, take the mounting panel out from one side, the follow-up maintenance work to the cable of being convenient for.
Optionally, a plurality of grooves are formed in the mounting plate, and the grooves are distributed at intervals.
Through adopting above-mentioned technical scheme, a plurality of recesses play the effect of location to the cable, when making the cable fix to the mounting panel, be difficult for rolling on the mounting panel, have improved the fixed effect to the cable.
Optionally, the mounting plate is provided with through holes on both sides of each groove.
Through adopting above-mentioned technical scheme, can use the ribbon to pass behind two through-holes with the cable ligature on the mounting panel.
Optionally, the bottom surface of each mounting plate is fixedly provided with a positioning column, and the positioning column abuts against the top surface of the mounting plate below the positioning column.
By adopting the technical scheme, the lower bridge and the upper bridge form a closed space, so that the cable is not exposed outside, the attractiveness is improved, and the protection effect on the cable is correspondingly improved.
Optionally, the connecting piece comprises a suspension rod and two nuts which are in threaded connection with the bottom end of the suspension rod; the bottom end of the suspender penetrates through the top wall of the upper bridge and is in sliding connection with the top wall of the upper bridge, and the two nuts are respectively abutted to the upper side face and the lower side face of the top wall of the upper bridge.
Through adopting above-mentioned technical scheme, fix the jib on indoor roof now, will go up the bridge again and install in the bottom of jib, through rotating a nut even, adjust the height of two nuts on the jib, can adjust the mounting height of bridge on the jib, be convenient for adjust the level state with last bridge.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the bridge and the cable are gradually installed, the bridge and the cable do not need to be lifted and fixed on an indoor roof together, the cable laying process is simple and convenient, the construction efficiency is high, and the labor intensity of workers is low;
2. a plurality of cables are fixed by a plurality of mounting plates, so that the cables are not easy to loosen when being laid layer by layer and are convenient to fix;
3. through the cooperation of locating plate and baffle, realize the fixed of mounting panel, the mounting panel can upwards move in last bridge, makes the successive layer of cable lay more simple and convenient.
Drawings
Fig. 1 is a schematic structural diagram of a bridge in an embodiment of the present application.
Fig. 2 is an exploded view showing an internal structure of an upper bridge.
Fig. 3 is a partial exploded view showing a connection relationship between an upper bridge and a lower bridge.
Fig. 4 is a partial view showing a connection relationship of the connection member with the upper bridge and the indoor roof.
Fig. 5 is a partial exploded view showing the connection relationship between the mounting plate and the cable.
Fig. 6 is a sectional view showing a cable distribution position inside the upper bridge.
Fig. 7 is an enlarged view of a portion a in fig. 6.
Fig. 8 is an exploded view showing the connection relationship between the first side plate and the top plate in the upper bridge.
Description of reference numerals: 1. mounting a bridge; 11. a top plate; 12. a first side plate; 13. a second side plate; 14. an extension plate; 2. a connecting member; 21. a boom; 22. a nut; 3. mounting a plate; 31. mounting grooves; 32. a positioning column; 33. a groove; 34. a through hole; 4. a bridge is arranged; 41. a connecting plate; 5. a clamping mechanism; 51. a rotating shaft; 52. positioning a plate; 53. a limiting component; 531. a one-way plate; 532. a limiting plate; 533. a torsion spring; 6. a screw; 7. and a baffle plate.
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
The embodiment of the application discloses electric power engineering cable laying crane span structure.
Referring to fig. 1 and 2, the bridge includes an upper bridge 1 installed under an indoor roof, a plurality of connectors 2 disposed between the upper bridge 1 and the indoor roof, a plurality of sets of mounting plates 3 fixed on the upper bridge 1, and a lower bridge 4 disposed on the upper bridge 1; the upper bridge 1 is a shell with a hollow inner part and an opening at the bottom, a plurality of groups of mounting plates 3 are positioned in the upper bridge 1, each group of mounting plates 3 are uniformly distributed at intervals along the length direction of the upper bridge 1, and the plurality of groups of mounting plates 3 are uniformly distributed at intervals along the height direction of the upper bridge 1; a clamping mechanism 5 is arranged between each mounting plate 3 and the upper bridge 1, and the clamping mechanism 5 is used for fixing the mounting plates 3 in the upper bridge 1; the lower bridge 4 is detachably connected to the bottom of the upper bridge 1 and seals the bottom opening of the upper bridge 1.
A plurality of cables can be fixed on the mounting plate 3, so that the mounting plate 3 in each group can connect a plurality of cables together to form a row of cables; when laying the cable, use connecting piece 2 earlier will go up bridge 1 and install on the roof, then lay multirow cable in the bridge 1 according to the order from top to bottom upwards, many cables in each row of cable all use a plurality of mounting panels 3 to fix, drag a row of cable after again, upwards push into bridge 1 with mounting panel 3 from the bottom opening of last bridge 1 in, and make mounting panel 3 fix in last bridge 1 through clamping mechanism 5, fix the mounting panel 3 on every row of cable in proper order after, repeat above-mentioned step, until fixing every row of cable in last bridge 1, accomplish the work of laying of cable, with this convenience of laying the cable that improves, reduce workman's efficiency of construction.
Referring to fig. 3, the two sides of the lower bridge 4 are all fixedly provided with the connecting plates 41, the upper bridge 1 is located between the two connecting plates 41, the two connecting plates 41 are respectively abutted to the two side walls of the upper bridge 1, and the connecting plates 41 are connected with the side walls of the upper bridge 1 through the screws 6, so that the bottom opening of the lower bridge 4 is sealed, the upper bridge 1 and the lower bridge 4 form a sealed space, cables are protected in the upper bridge 1 and are not exposed, and the attractive effect can be achieved.
The length of going up bridge 1 and bridge 4 down need adjust according to the length of laying of cable, if the length of the cable of need laying is shorter, can adopt one section whole to use, when the length of cable is laid to needs, then need adopt the mode of multistage concatenation to use, reduces the processing manufacturing cost of going up bridge 1 and bridge 4 down.
Referring to fig. 4, the connecting member 2 includes a suspension rod 21, the suspension rod 21 is disposed along the height direction of the upper bridge 1, the top end of the suspension rod 21 is fixedly connected with the roof, and the bottom is connected with the upper bridge 1, wherein:
the top of the suspender 21 can be fixed on the roof in a mode of expansion bolts, can also be fixed in a mode of implanting high-strength chemical bolts on the roof, and can also be fixed in a mode of embedding the suspender 21 in advance;
the bottom of jib 21 is threaded, and jib 21's bottom threaded connection has two nuts 22, the bottom of jib 21 is worn to establish on the roof of last bridge 1, and two nuts 22 butt respectively on two sides about the 1 roof of last bridge, clamping-force through two nuts 22 will go up bridge 1 and jib 21 fixed, can also be through adjusting the height of two nuts 22 on jib 21, adjust the mounting height of bridge 1 on jib 21, be convenient for adjust to the horizontality with last bridge 1.
Referring to fig. 5, the number of the clamping mechanisms 5 on each mounting plate 3 is at least two, and at least one clamping mechanism 5 is arranged on each of two sides of the mounting plate 3, in this embodiment, the number of the clamping mechanisms 5 on each mounting plate 3 is four, and the four clamping mechanisms 5 are respectively located at four end corners of the mounting plate 3; in order to reduce the occupied space of the clamping mechanism 5, mounting grooves 31 are further formed in the four end corners of the mounting plate 3, and each clamping mechanism 5 is arranged in each mounting groove 31.
Referring to fig. 6 and 7, the latch mechanism 5 includes a rotating shaft 51 rotatably connected in the mounting groove 31, a plurality of positioning plates 52 fixedly arranged on the rotating shaft 51, and a limiting component 53 arranged on the mounting groove 31 for limiting the rotating shaft 51 to rotate only in one direction; the rotating shaft 51 is arranged along the length direction of the upper bridge 1, and two ends of the rotating shaft 51 are respectively fixedly connected with two side walls of the mounting groove 31; the positioning plates 52 are arranged along the radial direction of the rotating shaft 51, the number of the positioning plates 52 is at least two, the number of the positioning plates 52 is four in the embodiment, the four positioning plates 52 are evenly distributed at intervals along the circumferential direction of the rotating shaft 51, and one end of the positioning plate 52, which is positioned on one side of the rotating shaft 51 far away from the bottom of the mounting groove 31, extends out of the mounting groove 31.
Referring to fig. 6 and 7, a plurality of baffles 7 are fixedly arranged on two inner side walls of the upper bridge 1 in the horizontal direction, the baffles 7 are arranged in the length direction of the upper bridge 1, the baffles 7 are distributed at intervals in the height direction of the upper bridge 1, the baffles 7 correspond to the mounting plates 3 one by one, and the clamping mechanism 5 on each mounting plate 3 is matched with the baffle 7 with the corresponding height; in the latch mechanism 5, the positioning plate 52 extending out of the mounting groove 31 abuts on the upper side of the baffle 7, and the limiting component 53 prevents the positioning plate 52 from rotating upwards away from one side of the baffle 7.
When the mounting plate 3 is pushed upwards into the upper bridge 1, the positioning plate 52 extending out of the mounting groove 31 in the clamping mechanism 5 contacts with the bottom surface of the baffle 7 first, the mounting plate 3 is continuously pushed upwards, the positioning plate 52 moves downwards under the reaction force of the baffle 7, and the rotating shaft 51 and the rest of the positioning plates 52 are driven to rotate at the same time, so that the mounting plate 3 can continuously move upwards; after the rotating shaft 51 passes through the baffle 7, the other positioning plate 52 just rotates above the baffle 7 and abuts against the baffle 7, so that the baffle 7 provides a supporting force for the positioning plate 52, and the rotating shaft 51 can only rotate in a single direction under the action of the limiting component 53, so that the positioning plate 52 cannot rotate upwards due to the gravity of the mounting plate 3, that is, the mounting plate 3 can only move upwards in the upper bridge beam 1 and cannot move downwards, and the fixing effect on the mounting plate 3 is realized.
And, when laying the cable in upper bridge 1 layer by layer, in the course of installing next row of cables, push mounting panel 3 upwards in upper bridge 1, make mounting panel 3 support to the mounting panel 3 below that has existed in upper bridge 1, and promote its upward movement together, lay at every turn only need upwards promote mounting panel 3 move one layer distance can, and the workman of being convenient for lays the cable in upper bridge 1 layer by layer.
Referring to fig. 5 and 6, in order to prevent the cable above from being extruded when the lower mounting plate 3 moves upward, a plurality of positioning columns 32 are fixedly arranged on the bottom surface of each mounting plate 3, in this embodiment, the number of the positioning columns 32 is four, four positioning columns 32 are respectively located at four end corners of the mounting plate 3, and the length of each positioning column 32 is greater than the diameter of the cable; the lower mounting plate 3 will abut against the positioning post 32 when moving upwards, thereby protecting the cable.
Referring to fig. 7, the limiting component 53 includes a one-way plate 531 hinged on the bottom of the mounting groove 31, a limiting plate 532 fixed on the bottom of the mounting groove 31, and a torsion spring 533 arranged on the hinge point of the baffle 7, the limiting plate 532 is located below the one-way plate 531, the torsion spring 533 keeps the limiting plate 532 abutted on the limiting plate 532, and the positioning plate 52 located on the side of the rotating shaft 51 far from the baffle 7 is abutted on the one-way plate 531. When the mounting plate 3 is pushed upwards, the positioning plate 52 rotates upwards from the lower part of the baffle plate 7 and pushes the baffle plate 7 to rotate upwards, so that the positioning plate 52 can smoothly pass through the baffle plate 7; on the other hand, when the positioning plate 52 is rotated downward from above the shutter 7 under the restriction of the restriction plate 532, the shutter 7 cannot be pushed and moved, and the rotating shaft 51 can be rotated only in one direction.
referring to fig. 8, the upper bridge beam 1 includes a top plate 11, and a first side plate 12 and a second side plate 13 distributed on two sides of the top plate 11, the second side plate 13 is fixedly connected with the top plate 11, an extension plate 14 is fixedly arranged on the top surface of the top plate 11 close to the first side plate 12, the top end of the first side plate 12 abuts against the extension plate 14 and is connected with the extension plate 14 by using a screw 6, so that the first side plate 12 can be detached from the top plate 11; when the maintenance work is carried out, after the screw 6 is unscrewed, the first side plate 12 is taken down, the mounting plate 3 loses the limitation of the baffle 7 on the first side plate 12, the upper bridge 1 can be drawn out to one side far away from the second side plate 13, and the follow-up maintenance work on the cable is convenient.
Referring to fig. 5, the mounting plate 3 is further provided with a plurality of grooves 33, the bottoms of the grooves 33 are arc-shaped, and the grooves 33 are uniformly distributed at intervals along the width direction of the upper bridge 1; a plurality of through holes 34 are formed in both sides of each groove 33, and the through holes 34 are distributed at intervals along the length direction of the upper bridge 1; when fixing the cable on mounting panel 3, place the recess 33 with the cable in, can play the effect of location to the cable, make the cable be difficult for rolling on mounting panel 3, use objects such as ribbon or iron wire to pass behind two corresponding through-holes 34 with the cable ligature on mounting panel 3, improved the fixed effect to the cable.
The implementation principle of a power engineering cable laying bridge in the embodiment of the application is as follows: through the mode of installing bridge 1 and cable step by step, need not to lift up the crane span structure and cable together and fix on indoor roof, lay the in-process of cable simple and conveniently, the efficiency of construction is higher, has still reduced workman's intensity of labour.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides an electric power engineering cable laying crane span structure which characterized in that: the bridge comprises an upper bridge (1), wherein the upper bridge (1) is arranged in a shell with a hollow inner part and an opening at the bottom end; the upper bridge (1) is also provided with a plurality of connecting pieces (2) for mounting the upper bridge (1) on a roof;
the cable fixing device is characterized by further comprising a plurality of groups of mounting plates (3) capable of fixing cables, wherein the mounting plates (3) are all connected in the upper bridge (1), and the mounting plates (3) in each group are arranged at intervals in the height direction;
each all be provided with latch mechanism (5) on mounting panel (3), latch mechanism (5) are fixed mounting panel (3) in last bridge (1).
2. An electrical engineering cabling rack as claimed in claim 1, wherein: the clamping mechanism (5) comprises a rotating shaft (51) rotatably connected to the mounting plate (3), at least two positioning plates (52) fixedly arranged on the rotating shaft (51) and a limiting assembly (53) arranged on the mounting plate (3) and used for limiting the rotating shaft (51) to rotate only in one direction;
a plurality of even interval distribution of circumference along axis of rotation (51) of locating plate (52), go up bridge (1) and set firmly a plurality of baffles (7) on the inside wall along the horizontal direction, the direction of height interval distribution of bridge (1) is gone up in a plurality of baffles (7), a plurality of baffles (7) and a plurality of mounting panel (3) one-to-one, one of them locating plate (52) butt in the latch mechanism (5) on mounting panel (3) is on locating plate (52), just spacing subassembly (53) make this locating plate (52) unable upwards rotate.
3. An electrical engineering cabling rack as claimed in claim 2, wherein: spacing subassembly (53) including articulate one-way plate (531) on mounting panel (3), set firmly limiting plate (532) on mounting panel (3) and set up torsional spring (533) on baffle (7) pin joint, limiting plate (532) are located one-way plate (531) below, torsional spring (533) make one-way plate (531) keep the butt on limiting plate (532), are located locating plate (52) butt in one side of baffle (7) are kept away from in axis of rotation (51) in one-way plate (531) top.
4. An electrical engineering cabling rack as claimed in claim 2, wherein: the bottom surface of each mounting panel (3) all sets firmly reference column (32), reference column (32) butt is on mounting panel (3) top surface of its below.
5. An electrical engineering cabling rack as claimed in claim 2, wherein: go up bridge (1) and include roof (11) and two first curb plate (12) and second curb plate (13) that set up respectively in roof (11) both sides, a plurality of mounting panels (3) are located between first curb plate (12) and second curb plate (13) board, and first curb plate (12) can be dismantled with roof (11) and be connected, second curb plate (13) and roof (11) fixed connection.
6. An electrical engineering cabling rack as claimed in claim 1, wherein: a plurality of grooves (33) are formed in the mounting plate (3), and the grooves (33) are distributed at intervals.
7. An electrical engineering cabling rack as claimed in claim 6, wherein: the mounting plate (3) is provided with through holes (34) on two sides of each groove (33).
8. An electrical engineering cabling rack as claimed in claim 1, wherein: the bottom opening of the upper bridge (1) can be detachably connected with a lower bridge (4), and the lower bridge (4) seals the bottom opening of the upper bridge (1).
9. An electrical engineering cabling tray according to any one of claims 1 to 8, wherein: the connecting piece (2) comprises a hanging rod (21) and two nuts (22) which are in threaded connection with the bottom end of the hanging rod (21); the bottom end of the suspender (21) penetrates through the top wall of the upper bridge (1) and is in sliding connection with the top wall, and the two nuts (22) are respectively abutted to the upper side surface and the lower side surface of the top wall of the upper bridge (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023021369.0U CN213937300U (en) | 2020-12-14 | 2020-12-14 | Electric power engineering cable laying bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023021369.0U CN213937300U (en) | 2020-12-14 | 2020-12-14 | Electric power engineering cable laying bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213937300U true CN213937300U (en) | 2021-08-10 |
Family
ID=77152222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023021369.0U Expired - Fee Related CN213937300U (en) | 2020-12-14 | 2020-12-14 | Electric power engineering cable laying bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213937300U (en) |
-
2020
- 2020-12-14 CN CN202023021369.0U patent/CN213937300U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210810 |
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| CF01 | Termination of patent right due to non-payment of annual fee |