CN105958351A - Working method for reducing power outage time of transformer substation bus - Google Patents
Working method for reducing power outage time of transformer substation bus Download PDFInfo
- Publication number
- CN105958351A CN105958351A CN201610581527.7A CN201610581527A CN105958351A CN 105958351 A CN105958351 A CN 105958351A CN 201610581527 A CN201610581527 A CN 201610581527A CN 105958351 A CN105958351 A CN 105958351A
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- disconnecting switch
- power transmission
- supporting frame
- swivel nut
- 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
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/18—Power-operated hoists
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a working method for reducing a power outage time of a transformer substation bus. A device comprises a pedestal, a transmission shaft, a ratchet wheel, a supporting frame body and a pawl, wherein the supporting frame body is arranged on the pedestal; and the pawl is installed on the supporting frame body; the transmission shaft is connected with the supporting frame body via a seat cover; the racket wheel is movably connected with the transmission shaft; a limiting structure and a friction component are arranged on the transmission shaft; a rope winding roller is arranged at one end of the transmission shaft; a fixed pulley for passing through a rope is arranged on a horizontal arm of the supporting frame body; and a hook is arranged at a rope free end of the rope winding roller. The device can quickly realize accurate hoisting of a heavy object, the time for hoisting is short, the overhauling efficiency is high, and the bidirectional self-locking in a mechanical transmission process is achieved; and meanwhile, the operation is convenient, safe and reliable.
Description
Technical field
The present invention relates to transformer substation overhauling device ground technical field, be specifically related to a kind of substation bus bar power off time of reducing
Method of work.
Background technology
In transformer station, along with equipment longtime running and external influence, equipment fault defect is increasing, for guaranteeing electricity
Net reliability service, the work being replaced old equipment becomes as homely food.But, either used equipment or new equipment
The heaviest, neighbouring device interval is narrow, and prior art uses the mode of crane lifting and scaffolding carrying to carry out equipment
Change and install, but, transformer station's narrow space, crane is difficult to pass through, and setting up insulation scaffold wastes time and energy, and only at compartment
Feasible away from big transformer station.Secondly transformer station is when main equipments such as zinc oxide surge arresters, it is common that by traditional lifting vehicle
Carry out, but owing to the lifting vehicle channel requirements to travelling is higher, and transformer station has a lot of equipment mostly, its passage is narrower,
Therefore lifting vehicle arrival operation field is more difficult；Additionally transformer station place is also required that higher by lifting vehicle, and lifting vehicle arrives
After reaching operation field, place be there is also bigger destruction；And owing to lifting vehicle volume is big, in satisfied lifting vehicle gabarit
In the case of safe distance between live part, vehicle operation space is less, it is difficult to ensure its job safety.
To this end, the patent of invention of Publication No. 104876133A proposes a kind of transformer station hanging apparatus, this device
Including supporter, the bottom of supporter is provided with base, and base connects the grid support in transformer station, and the top of supporter is provided with
Boom arm sections body, boom arm sections body connects and has fixed pulley and lifting rope, and lifting rope connects movable pulley, and movable pulley is provided with suspension hook,
Lifting rope walks around movable pulley and fixed pulley successively.And for example the open a kind of converting station electric power equipment of CN201310139206.8 plays lifting
Putting, including a seat pipe, the periphery of seat pipe is fixedly connected with anchor ear, the upper port of seat pipe is inserted between one and seat pipe inwall
The right-angle elbow pipe that gap coordinates, the horizontal segment of right-angle elbow pipe arranges one for the suspension ring connecting pulley, the vertical section of right-angle elbow pipe
It is provided with an annulus limiting stand equal with seat pipe external diameter, during use, used equipment or new equipment is placed on suspension hook, then uses
Pulling lifting rope, used equipment moves upward under external force and realizes changing, and new equipment moves downward weight under the effect of external force
Newly installed.Although this device uses pulley principle, during operation, ratio is relatively labor-saving, but owing to the weight of equipment is big, still needs to during operation
Expend a large amount of strength, leverage the replacing efficiency of equipment.Even more important: existing locking device is by ratchet and spine
Pawl forms, and in hand winch, ratchet mechanism is conventional in case non-return turn.Ratchet self-locking mechanism in lifting appliance has solid more at present
The ratchet being contained on winch main shaft and the ratchet composition being contained on rocking bar, it is achieved one-way brake during heavy lift or
Have a rest.And when weight is slightly downgraded or during descending at slow speed by needs, then generally require and first exert a force to heavy lift direction pre-add, make spine
Pawl departs from the ratchet of ratchet, then is lifted by ratchet, apply lifting force with overcome article gravity situation under slowly reduce force,
Weight is made slowly to decline.In the case, promote the force amplitude unbalance with article gravity and be difficult to hold, inevitably go out
The fluctuation of existing weight decrease speed, also will cause the suddenly big or suddenly small of gravity, thus increases considerably the operation easier of operating personnel,
Even causing operation out of control, weight hurtles down, and leads to security incident.This problem the most not yet obtains ideal solution
Certainly.
Summary of the invention
Problem to be solved by this invention is the above-mentioned deficiency overcoming prior art, it is provided that a kind of substation bus bar that reduces stops
The method of work of electricity time, this device can quickly realize the accurate lifting of weight, and lifting required time is short, and overhaul efficiency is high,
Bidirectional self-locking in mechanical transmission course, and easy to operate, safe and reliable.
For solving above-mentioned technical problem, the technical solution used in the present invention is: when a kind of minimizing substation bus bar has a power failure
Between device, including base, power transmission shaft, ratchet, the supporting frame being arranged on base and the ratchet being arranged on supporting frame,
Described power transmission shaft is connected with supporting frame by cover for seat, and described ratchet is flexibly connected with power transmission shaft, and described power transmission shaft is provided with limit
Bit architecture and friction component, one end of described power transmission shaft is provided with whim, and the transverse arm of support frame as described above body is provided with to be worn for rope
The fixed pulley crossed, the rope free end on described whim is provided with hook, and lower four angles of described base are provided with hydraulicefficiency elevation structure.
Described base is provided with horizon sensor, and described horizon sensor connects controller, and controller connects hydraulic pressure liter
Descending mechanism, hydraulicefficiency elevation structure uses oil cylinder.
Support frame as described above body is connected with base rotation.
Described base is provided with driving motor, drives the gear that drives of motor to nibble with the gear being sleeved on supporting frame
Close.
Described friction component includes being sleeved on actuating swivel nut the most threaded on power transmission shaft, is arranged on power transmission shaft one end
Prevent the clamp nut that actuating swivel nut exits and the friction damper being sleeved on power transmission shaft.
Described actuating swivel nut is connected with described power transmission shaft by multiple thread.
Described clamp nut is connected with described power transmission shaft by fine thread.
Described clamp nut side arranges groove.
It is composed of the following components by weight for described friction damper: activated carbon 5～10 parts；Brown Alundum cashew shell oil
Phenol-formaldehyde resin modified 8～12 parts；Diamond particles 15～25 parts；Acrylonitrile-butadiene rubber powder 15～25 parts；Polypropylene fibre 10～15
Part；Boron nitride 6～10 parts.
A kind of method of work reducing substation bus bar power off time, comprises the following steps:
1) after the disconnecting switch of transformer station is damaged, device is moved in transformer station, drive motor work to drive supporting frame
Transverse arm move to above disconnecting switch；
2) being stuck in disconnecting switch by hook, pulled down by disconnecting switch hold-doun nut, rotating clockwise actuating swivel nut will keep apart
Slinging in pass, drives motor work that transverse arm is moved to side, and fine setting actuating swivel nut counterclockwise, now disconnecting switch is slowly to moving down
Dynamic；
3) disconnecting switch keeped in repair is hung on hook, rotate clockwise actuating swivel nut and disconnecting switch is sling make disconnecting switch
Top at disconnecting switch base to be installed；Motor work is driven to drive the disconnecting switch under supporting frame to be positioned at isolation to be installed
The surface of switch pedestal, the most counterclockwise fine setting actuating swivel nut, now disconnecting switch slowly moves down, it is simple to operating personnel
The position of fine setting disconnecting switch, the installing hole making disconnecting switch is corresponding with the base screw of disconnecting switch.
The invention has the beneficial effects as follows:
1) the bidirectional self-locking mechanism of the present invention uses ratchet-friction self-locking structure, can not only reliably ensure good rotating shaft
Self-locking counterclockwise, and it is capable of the self-locking that turns clockwise, still can implement when self-locking counterclockwise to rotate counterclockwise
Actuating, only need to be controlled by the actuating of actuating nut, just can realize the rotation of either direction and the self-locking of optional position and unblock,
It is not required to special solution latching operation, operates random and convenient and swift.
2) present invention increase on the basis of conventional ratchet self-locking structure is provided with friction component, both can realize moment of torsion and pass
Dynamic bidirectional self-locking, can improve again the safety coefficient of movement system, thus have simple in construction, simple for production, with low cost etc.
Advantage.
3) present invention is by friction damper, ratchet and the regulation of actuating swivel nut axial location and restriction, it is achieved friction resistance
The regulation of Buddhist nun's power size, and operated, simultaneously by the backwards rotation realized under self-locking state of placing restrictions on of actuating swivel nut axial location
Can reliably ensure the safety of actuating operation under load condition.
4) present configuration is the smallest and the most exquisite, it is simple to operation in complicated transformer station, changes disconnecting switch, uses traditional
Device, dismantles and installs laborious, and install inaccuracy, and alignment error is big, generally requires power failure and could change for 4 hours
Finish；And use assembly of the invention to change disconnecting switch and only need 40 minutes.
Accompanying drawing explanation
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
The present invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment one
As it is shown in figure 1, a kind of device reducing substation bus bar power off time, including base 19, power transmission shaft 1, ratchet 6, arrange
Supporting frame 2 on base 19 and the ratchet 8 being arranged on supporting frame 2, described power transmission shaft 1 is by cover for seat 3 and bracing frame
Body 2 connects, and described ratchet 6 is flexibly connected with power transmission shaft, and described power transmission shaft 1 is provided with position limiting structure 1-1 and friction component, described
One end of power transmission shaft 1 is provided with whim 12, the transverse arm of support frame as described above body 2 be provided with for rope through fixed pulley 12, described
Rope 14 free end on whim is provided with hook 13.Support frame as described above body and base are by the bearing being sleeved on supporting frame
18 are rotationally connected, described base 19 be provided with driving motor 17, drive motor driving gear 16 be sleeved on supporting frame
Gear 15 engage, it is simple to adjust transverse arm angle.Described friction component includes being sleeved on power transmission shaft the most threaded
Actuating swivel nut 5, it is arranged on the clamp nut 7 that power transmission shaft 1 one end prevents actuating swivel nut from exiting and the friction being sleeved on power transmission shaft
Damping piece 4.Ratchet 8 can be arranged on supporting frame 2 by rotating shaft 10, and ratchet 8 engages with ratchet 6, to realize the system of ratchet 6
Dynamic.Power transmission shaft 1 is connected with supporting frame 2 by cover for seat 3, and cover for seat 3 can be the bushing type knot being welded to connect with supporting frame 2
Structure；Can also be bearing block, install with supporting frame 2 and be connected, power transmission shaft 1 be installed with bearing block by thrust bearing 11 and is connected,
Actuating more light and flexible.Ratchet 6 is flexibly connected with power transmission shaft 1, can be freely rotatable on power transmission shaft 1.Power transmission shaft 1 is provided with limit
Bit architecture 1-1 and friction component, play position-limiting action when power transmission shaft moves right, and wherein, described position limiting structure 1-1 is arranged on
The load side of described cover for seat 3, is used for preventing power transmission shaft 1 to drive end play.Position limiting structure 1-1 can be to be integrally disposed upon transmission
Step on axle 1 or flange, it is also possible to be the position-limitting pin being installed on power transmission shaft by radial direction through hole, the most also can be spacing
The thrust side of pin installs spacing pad additional.Described friction component includes actuating swivel nut 5, clamp nut 7 and friction damper 4, wherein
Friction damper 4 can be cannula-like or wheel plate-like, arranges according to requirement of strength, and wiping damping piece 4 should be pressed close to described ratchet 6 and pacify
Dress.Actuating swivel nut 5 and clamp nut 7 pass sequentially through the input being threadably mounted at power transmission shaft 1, and the internal diameter of clamp nut 7 should be little
Internal diameter in actuating swivel nut 5, in order to be respectively mounted.Clamp nut plays the effect holding out against actuating swivel nut, prevents actuating swivel nut
Loosen, actuating swivel nut 5 can install hands 9, the most also can connect actuating unit by driving member.
A kind of method of work reducing substation bus bar power off time, comprises the following steps:
1) after the disconnecting switch of transformer station is damaged, device is moved in transformer station, drive motor work to drive supporting frame
Transverse arm move to above disconnecting switch；
2) being stuck in disconnecting switch by hook, pulled down by disconnecting switch hold-doun nut, rotating clockwise actuating swivel nut will keep apart
Slinging in pass, drives motor work that transverse arm is moved to side, and fine setting actuating swivel nut counterclockwise, now disconnecting switch is slowly to moving down
Dynamic；
3) disconnecting switch keeped in repair is hung on hook, rotate clockwise actuating swivel nut and disconnecting switch is sling make disconnecting switch
Top at disconnecting switch base to be installed；Motor work is driven to drive supporting frame to rotate, to be installed keeps apart
Closing the surface being positioned at disconnecting switch base to be installed, the most counterclockwise fine setting actuating swivel nut, now disconnecting switch is the most downward
Mobile, it is simple to operating personnel finely tunes the position of disconnecting switch, makes the installing hole of disconnecting switch and the base screw phase of disconnecting switch
Corresponding.
When the present invention uses, 9 or start other actuating unit by hands, make actuating swivel nut 5 be rotated clockwise, behaviour
Movable snail sleeve 5, by after ratchet 6, friction damper 4 and cover for seat 3 jam-packed, drives whim 12 and ratchet 6 to rotate, it is achieved weight
Promote.Heavy lift put in place or during need interval time, the operation of actuating swivel nut 5, the now ratchet of ratchet 6 can be stopped at any time
Engage with described ratchet 8 and can not rotate, due to the rubbing action of friction damper 4, the gravity of weight can be overcome to make to pass
Moving axis 1 stops operating, and i.e. realizes self-locking.Clamp nut can play the effect compressing actuating swivel nut, prevents from loosening, needs to make weight
During decline, first clamp nut is loosened, can directly rotate actuating swivel nut 5, actuating swivel nut 5 side counterclockwise under aforementioned self-locking state
The trend moved by screw thread the most oriented clamp nut 7 one end in time rotating, actuating swivel nut fine motion, now the gravity of weight is bigger
In frictional force, now can not move axially due to the stop of clamp nut 7, power transmission shaft 1 can only be driven to overcome friction damper 4
Frictional resistance carry out rotate in an anti-clockwise direction, it is achieved the slow decline of weight.During weight declines, can stop at any time
The operation of actuating swivel nut 5, i.e. rotates clockwise actuating swivel nut, thus pressing friction damping piece, the rubbing action of friction damper 4
The continuation stoping weight declines, and i.e. realizes the reverse locking of power transmission shaft 1.When power transmission shaft 1 is carried out counter-rotating actuating, due to
The gravity of weight reduces effect with the balance of friction damper 4 frictional force, and actuating is the most laborsaving, and can stop at any time and oneself
Lock, which thereby enhances the safety of weight descending operation；Lower four angles of described base are provided with hydraulicefficiency elevation structure, on described base
Being provided with horizon sensor, described horizon sensor connects controller, and controller connects hydraulicefficiency elevation structure, hydraulicefficiency elevation structure
Use oil cylinder, by horizon sensor PLC technology cylinder efficient, be that base is in level.
Embodiment two
As further improving, the friction damper 4 using external diameter to be 60mm, maximum self-locking moment of torsion can reach 1000kg with
On, when needs increase load torque, as long as the effective cross section that appropriateness strengthens friction damper 4 is amassed.
Embodiment three
Described actuating swivel nut 5 can be connected with described power transmission shaft 1 by multiple thread, it is simple to increases the helical pitch connecting screw thread, strengthens
The transmission of actuating swivel nut 5 driving torque, counter-rotating actuating is sensitiveer.Described clamp nut 7 preferably by fine thread with
Described power transmission shaft 1 connects, and can increase the axial pressing force of clamp nut 7.
Embodiment four
Described clamp nut 7 side can arrange groove, it is simple to the junction surface pair of multiple thread and fine thread crossed by clamp nut 7
Actuating swivel nut 5 is implemented to compress, it is to avoid occur compressing room.
Embodiment five with the difference of embodiment four is: it is composed of the following components by weight for described friction damper:
Activated carbon 5 parts；Brown Alundum cashew nut oil modified alkyd resin 8 parts；Diamond particles 15 parts；Acrylonitrile-butadiene rubber powder 15 parts；Polypropylene
Fiber 10 parts；Boron nitride 6 parts.
Embodiment six with the difference of embodiment four is: it is composed of the following components by weight for described friction damper:
Activated carbon 10 parts；Brown Alundum cashew nut oil modified alkyd resin 12 parts；Diamond particles 25 parts；Acrylonitrile-butadiene rubber powder 25 parts；Poly-third
Alkene fiber 15 parts；Boron nitride 10 parts.
Embodiment seven with the difference of embodiment four is: it is composed of the following components by weight for described friction damper:
Activated carbon 8 parts；Brown Alundum cashew nut oil modified alkyd resin 10 parts；Diamond particles 20 parts；Acrylonitrile-butadiene rubber powder 20 parts；Poly-third
Alkene fiber 12 parts；Boron nitride 8 parts；Diamond uses diamond synthesis low price, and hardness is high.
Embodiment eight with the difference of embodiment seven is: embodiment eight uses friction material disclosed in CN201480061713.7
Material；Test through inventor, see table.
Above presently preferred embodiments of the present invention is described, so that principles and applications to be described, but should manage
Solving, the present invention otherwise can realize on the basis of without departing from these principles.
Claims (8)
1. the device reducing substation bus bar power off time, it is characterised in that: include base, power transmission shaft, ratchet, be arranged on
Supporting frame on base and the ratchet being arranged on supporting frame, described power transmission shaft is connected with supporting frame by cover for seat, institute
Stating ratchet to be flexibly connected with power transmission shaft, described power transmission shaft is provided with position limiting structure and friction component, and one end of described power transmission shaft sets
Have whim, the transverse arm of support frame as described above body be provided with for rope through fixed pulley, the rope free end on described whim
Being provided with hook, support frame as described above body is connected with base rotation, and lower four angles of described base are provided with hydraulicefficiency elevation structure.
2. the device reducing substation bus bar power off time as claimed in claim 1, it is characterised in that: described base is provided with
Drive motor, drive the gear that drives of motor to engage with the gear being sleeved on supporting frame.
3. the device reducing substation bus bar power off time as claimed in claim 2, it is characterised in that: described friction component bag
Include and be sleeved on actuating swivel nut the most threaded on power transmission shaft, be arranged on the compression that power transmission shaft one end prevents actuating swivel nut from exiting
Nut and the friction damper being sleeved on power transmission shaft.
4. the device reducing substation bus bar power off time as claimed in claim 3, it is characterised in that: described actuating swivel nut leads to
Cross multiple thread to be connected with described power transmission shaft.
5. the device reducing substation bus bar power off time as claimed in claim 4, it is characterised in that: described clamp nut leads to
Cross fine thread to be connected with described power transmission shaft.
6. the device reducing substation bus bar power off time as claimed in claim 5, it is characterised in that: described clamp nut one
Side arranges groove.
7. the device reducing substation bus bar power off time as claimed in claim 6, it is characterised in that: described friction damper
It is composed of the following components by weight: activated carbon 5～10 parts；Brown Alundum cashew nut oil modified alkyd resin 8～12 parts；Gold
Hard rock granule 15～25 parts；Acrylonitrile-butadiene rubber powder 15～25 parts；Polypropylene fibre 10～15 parts；Boron nitride 6～10 parts.
8. the method for work of the device of a minimizing substation bus bar power off time as claimed in claim 6, it is characterised in that:
Comprise the following steps:
1) after the disconnecting switch of transformer station is damaged, device is moved in transformer station, drive motor work to drive supporting frame
Transverse arm move to above disconnecting switch；
2) being stuck in disconnecting switch by hook, pulled down by disconnecting switch hold-doun nut, rotating clockwise actuating swivel nut will keep apart
Slinging in pass, drives motor work that transverse arm is moved to side, and fine setting actuating swivel nut counterclockwise, now disconnecting switch is slowly to moving down
Dynamic；
3) disconnecting switch keeped in repair is hung on hook, rotate clockwise actuating swivel nut and disconnecting switch is sling make disconnecting switch
Top at disconnecting switch base to be installed；Motor work is driven to drive the disconnecting switch under supporting frame to be positioned at isolation to be installed
The surface of switch pedestal, the most counterclockwise fine setting actuating swivel nut, now disconnecting switch slowly moves down, it is simple to operating personnel
The position of fine setting disconnecting switch, the installing hole making disconnecting switch is corresponding with the base screw of disconnecting switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610581527.7A CN105958351A (en) | 2016-07-22 | 2016-07-22 | Working method for reducing power outage time of transformer substation bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610581527.7A CN105958351A (en) | 2016-07-22 | 2016-07-22 | Working method for reducing power outage time of transformer substation bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105958351A true CN105958351A (en) | 2016-09-21 |
Family
ID=56900116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610581527.7A Pending CN105958351A (en) | 2016-07-22 | 2016-07-22 | Working method for reducing power outage time of transformer substation bus |
Country Status (1)
| Country | Link |
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| CN (1) | CN105958351A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106383291A (en) * | 2016-09-26 | 2017-02-08 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Test wiring device and method for field test of leakage current of lightning arrester |
| CN106883625A (en) * | 2017-03-29 | 2017-06-23 | 贵州联洪合成材料有限公司 | A kind of light-duty damping material and preparation method thereof |
| CN108439231A (en) * | 2018-05-11 | 2018-08-24 | 吴江远洋电气有限责任公司 | A kind of on-load tap-changer of transformer boom hoisting |
| CN110416901A (en) * | 2019-06-27 | 2019-11-05 | 国网山东省电力公司临沭县供电公司 | Distribution terminal mounting auxiliary and application method on a kind of column |
| CN110697602A (en) * | 2019-11-25 | 2020-01-17 | 肖鑫 | Reel lifting mechanism and lifting device and method provided with same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383291A (en) * | 2016-09-26 | 2017-02-08 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Test wiring device and method for field test of leakage current of lightning arrester |
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| CN108439231A (en) * | 2018-05-11 | 2018-08-24 | 吴江远洋电气有限责任公司 | A kind of on-load tap-changer of transformer boom hoisting |
| CN110416901A (en) * | 2019-06-27 | 2019-11-05 | 国网山东省电力公司临沭县供电公司 | Distribution terminal mounting auxiliary and application method on a kind of column |
| CN110697602A (en) * | 2019-11-25 | 2020-01-17 | 肖鑫 | Reel lifting mechanism and lifting device and method provided with same |
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Application publication date: 20160921 |