CN105692513B - A kind of scissor-type insulation aerial working platform vehicle - Google Patents
A kind of scissor-type insulation aerial working platform vehicle Download PDFInfo
- Publication number
- CN105692513B CN105692513B CN201610225638.4A CN201610225638A CN105692513B CN 105692513 B CN105692513 B CN 105692513B CN 201610225638 A CN201610225638 A CN 201610225638A CN 105692513 B CN105692513 B CN 105692513B
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- platform
- scissor
- bracket
- pair
- cylinder
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- 238000009413 insulation Methods 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 10
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 230000002547 anomalous effect Effects 0.000 claims abstract description 7
- 230000003028 elevating effect Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000000108 ultra-filtration Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
A kind of scissor-type insulation aerial working platform vehicle.It is simple in structure to provide one kind, is conveniently operated, improves the scissor-type insulation aerial working platform vehicle of operating reliability and safety.Including car body, the car body is equipped with headstock and compartment, the platform assembly connected by scissors mechanism is equipped in the compartment, the platform assembly includes bracket, it encloses platform and pushes oil cylinder, the bracket and to enclose platform be glass steel material, the both sides of the bracket are equipped with a pair of guide rails, the bottom surface both side for enclosing platform is equipped with a pair of of guide sleeve, the guide sleeve is adaptedly set on the guide rail, the promotion oil cylinder, which is located at, to be enclosed between platform and bracket, the cylinder body for pushing oil cylinder is located on bracket, the hydraulic stem connection of oil cylinder is pushed to enclose platform, it is located on the bracket so that enclosing platform horizontal anomalous movement.The present invention at work, can adapt to the operation of the overhead line structures on the country road of rural area, improve work efficiency, reduce labor intensity with electro ultrafiltration.
Description
Technical field
The present invention relates to electric power overhaul field more particularly to scissor-type insulation aerial working platform vehicles.
Background technology
Currently, with the expansion of power grid scale, 110KV grades or more of substation, transformer equipment quantity quickly increase, if
There are obvious shortcomings for the inspection platform that standby maintenance workload is multiplied, and uses now：Wherein, inspection platform work is manually built
Work amount is big, time-consuming and laborious, sometimes ten minutes maintenance workloads, and building inspection platform but needs time half a day, after short time maintenance,
It also needs a period of time to dismantle inspection platform, takes, tears in platform process that there is also the wind of personnel's mechanical wounding and personal electric shock injures and deaths open
Danger；Mechanical elevating platform is more heavy, difficult, and personnel injure event by a crashing object and happen occasionally.In short, manually build inspection platform and
Both mode inefficiency of mechanical elevating inspection platform, there are larger security risks, it is difficult to adapt to the maintenance amount being multiplied.
Concurrently there are using aerial lift device with insulated arm carry out working at height, due to aerial lift device with insulated arm volume is larger, by route topography
It influences, the overhead line structures that rural area is much set up along country lane, aerial lift device with insulated arm can not be in place, constrains livewire work
Carry out.
Invention content
The present invention is conveniently operated, improves operating reliability and safety in view of the above problems, provide a kind of simple in structure
Scissor-type insulate aerial working platform vehicle.
The technical scheme is that：Including car body, the car body is equipped with headstock and compartment, is equipped in the compartment logical
The platform assembly of scissors mechanism connection is crossed,
The platform assembly includes bracket, enclose platform and pushes oil cylinder, the bracket and to enclose platform be glass steel material, described
The both sides of bracket are equipped with a pair of guide rails, and the bottom surface both side for enclosing platform is equipped with a pair of of guide sleeve, and the guide sleeve is adaptedly set in institute
It states on guide rail, the promotion oil cylinder, which is located at, to be enclosed between platform and bracket, and the cylinder body for pushing oil cylinder is located on bracket, pushes oil cylinder
Hydraulic stem connection enclose platform so that enclose platform horizontal anomalous movement and be located on the bracket.
The scissors mechanism includes both sides scissor group disposed in parallel, and the scissor group includes several scissors pair, described to cut
Pitch to the scissor arms that are hingedly arranged including a pair of cross, the scissor arms are glass steel material, the scissor arms of adjacent scissor pair it
Between it is hinged, be separately connected bracket positioned at the top both ends of the top scissor pair, the bottom both ends for being located at bottom scissor pair are distinguished
Connect compartment.
It is stretched to being equipped with hydraulic cylinder one, the hydraulic cylinder one towards platform is enclosed positioned at the scissor of the top in the scissors mechanism
The direction for going out bracket tilts, and the cylinder body of the hydraulic cylinder one is located in scissor arms, and platform is enclosed in the hydraulic stem connection of hydraulic cylinder one.
Further include balance weight mechanism, the balance weight mechanism includes hydraulic cylinder two and strut, and two side rails of the bracket are in sky
Heart pipe, the strut take the shape of the letter U bar, and the strut is located at by two horizontal anomalous movement of hydraulic cylinder in the both sides hollow pipe of the bracket,
It is detachably connected equipped with clump weight on the strut；
The hydraulic cylinder two is located on bracket, and the hydraulic cylinder two is opposite with the telescopic direction of oil cylinder is pushed.
Fixed seat is equipped with positioned at the side top surface of cylinder body, the fixed seat and enclose and be equipped with spring between platform on the guide rail.
The platform that encloses includes four cycle side plates and a bottom plate, and the side plate includes the plate body of a pair of parallel setting, a pair of of plate body
Between cavity several elastomers are set.
The section of the guide rail is rounded or rectangular.
The scissors mechanism is connected to by rotating platform in the compartment.
On the car body elevating lever is equipped with positioned at the lower part in compartment.
The present invention at work, using car body as the carrying of scissors mechanism and platform assembly, transhipment and power supplier,
Scissors mechanism is interconnected to form scissor-type using scissor arms, so that platform assembly carries out raising and decline；Platform assembly
In bracket and to enclose platform be glass steel material, the scissor arms in scissors mechanism are glass steel material, high with intensity, insulation property
Can, meanwhile, insulating materials can be taken to be covered in the metal part that may contact electrical body, meet the insulating properties with electro ultrafiltration
Energy.During enclosing stage translation, inclined shore is realized by the way that hydraulic cylinder one is arranged；By the way that balance weight mechanism is arranged, it is flat that platform is enclosed in realization
During shifting, encloses platform and clump weight is located at the both sides of scissors mechanism, realize balance play；By the way that spring is arranged, stage translation is being enclosed
In the process, platform is enclosed for holding；Finally so that for platform in translation motion, translation is reliable, avoids toppling, prevents operating personnel
Falling from high altitude, improve safety, it is relatively reliable.
The present invention at work, can adapt to the operation of the overhead line structures on the country road of rural area, carry with electro ultrafiltration
High working efficiency, reduces labor intensity.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention,
Fig. 2 is the vertical view of Fig. 1,
Fig. 3 is the structural schematic diagram of platform assembly in the present invention,
Fig. 4 is the structural schematic diagram of bracket and promotion oil cylinder in the present invention,
Fig. 5 is the action process figure of Fig. 4,
Fig. 6 is the attachment structure schematic diagram of middle guide and guide sleeve of the present invention,
Fig. 7 is the structural schematic diagram of balance weight mechanism in the present invention,
Fig. 8 is the vertical view of Fig. 7,
Fig. 9 is the structural schematic diagram of hydraulic cylinder one in the present invention,
Figure 10 is the structural schematic diagram of latus inframedium of the present invention,
Figure 11 is the working state figure one of the present invention,
Figure 12 is the working state figure two of the present invention；
1 is car body in figure, and 2 be headstock, and 3 be compartment,
4 be scissors mechanism, and 41 be scissor pair, and 42 be scissor arms,
5 be platform assembly, and 51 be bracket, and 52 be to enclose platform, and 521 be plate body, and 522 be elastomer, and 53 be to push oil cylinder, and 54 are
Guide rail, 55 be guide sleeve,
6 be hydraulic cylinder one, and 7 be balance weight mechanism, and 71 be hydraulic cylinder two, and 72 be strut, and 73 be clump weight, and 8 be fixed seat, 9
It is spring, 10 be rotating platform, and 11 be elevating lever.
Specific implementation mode
As shown in figs. 1-12, including car body 1, the car body is equipped with headstock 2 and compartment 3 to the present invention, is set in the compartment
There is the platform assembly 5 connected by scissors mechanism 4,
The platform assembly 5 includes bracket 51, encloses platform 52 and push oil cylinder 53, the bracket 51 and to enclose platform 52 be glass
The both sides of steel material, the bracket 51 are equipped with a pair of guide rails 54, and the bottom surface both side for enclosing platform 52 is equipped with a pair of of guide sleeve 54, described
Guide sleeve is adaptedly set on the guide rail, and the promotion oil cylinder 53, which is located at, to be enclosed between platform 52 and bracket 51, the promotion oil cylinder
Cylinder body be located on bracket, push oil cylinder hydraulic stem connect enclose platform so that enclose platform horizontal anomalous movement and be located on the bracket.
In work, is combined with translation by enclosing platform lifting, reduce vehicle height, improve operation amplitude so that electrification
Operation Van more minimizes, facilitation.
The scissors mechanism 4 includes both sides scissor group disposed in parallel, and the scissor group includes several scissors pair 41, described
For scissor to the scissor arms 42 being hingedly arranged including a pair of cross, the scissor arms are glass steel material, the scissor of adjacent scissor pair
It is hinged between arm, it is separately connected bracket positioned at the top both ends of the top scissor pair（That is the centre position of bracket）, it is located at most lower
The bottom both ends of square scissor pair are separately connected compartment.
The parallel scissor group in both sides is arranged in scissors mechanism, and the two synchronization action plays reliable support and encloses platform；Scissors mechanism liter
Drop action is the prior art, and lifting action is carried out by included hydraulic cylinder；Scissor arms are glass steel material, have intensity high
And insulating properties, it ensure that the reliability of livewire work.
As shown in figure 9, positioned at the scissor of the top to being equipped with hydraulic cylinder 1, the hydraulic cylinder in the scissors mechanism
One 6 stretch out the direction inclination of bracket towards platform is enclosed, and the cylinder body of the hydraulic cylinder one is located in scissor arms, the hydraulic stem of hydraulic cylinder one
Platform is enclosed in connection；Hydraulic cylinder one is set, and when pushing oil cylinder pushing to enclose platform, hydraulic cylinder one, which plays inclined push and simultaneously supports, encloses platform
Effect avoids enclosing platform and the case where side is toppled over occurs, improves safety；The cylinder body and hydraulic cylinder of hydraulic cylinder one are articulated and connected,
Adapt to action request.
As Figure 7-8, further include balance weight mechanism 7, the balance weight mechanism includes hydraulic cylinder 2 71 and strut 72, the support
Two side rails 54 of frame are in hollow pipe, and the strut 72 takes the shape of the letter U bar, and the strut 72 is located at by 2 71 horizontal anomalous movement of hydraulic cylinder
In the both sides hollow pipe of the bracket, it is detachably connected on the strut equipped with clump weight 73；
The hydraulic cylinder two is located on bracket, and the hydraulic cylinder two is opposite with the telescopic direction of oil cylinder is pushed.
Balance weight mechanism at work, according to enclosing whether platform translates carry out breakdown action, balance weight mechanism and the movement side for enclosing platform
To on the contrary, to ensure the balance of both sides；Clump weight is replaced according to different operating personnel, is adjusted, wider adaptability；
Strut is arranged in hollow pipe, facilitates installation, saves space, operation is reliable.
Fixed seat 8 is equipped with positioned at the side top surface of cylinder body, the fixed seat and enclose and be equipped with spring between platform on the guide rail
9, spring is set, when pushing oil cylinder pushing to enclose platform, plays the role of " pulling " and encloses platform, avoids enclosing platform and the feelings that side is toppled over occurs
Condition improves safety.
At work, collective effect avoids enclosing toppling over for platform, stablizes, is reliable for hydraulic cylinder one, balance weight mechanism and spring.
As shown in Figure 10, the platform 52 that encloses includes four cycle side plates and a bottom plate, and the side plate includes a pair of parallel setting
Several elastomers 522 are arranged in plate body 521, the cavity between a pair of of plate body（Such as spring or cushion）, play the buffering for enclosing platform
Effect plays the role of buffer protection in accidental falling, reduces the damage to operating personnel.
The section of the guide rail 54 is rounded or rectangular, convenient for being configured according to processing request.
The scissors mechanism is connected to by rotating platform 10 in the compartment, makes scissor machine by the way that rotating platform is arranged
Structure can spinning movement, adapt to the processing request of different direction, it is easy to operate, reliable.
It is equipped with elevating lever 11 positioned at the lower part in compartment on the car body, forms supporting leg, coordinates car body itself and positioned at flat
The lower section of platform component forms reliable and stable support, prevents vehicle from toppling.
Claims (7)
- The aerial working platform vehicle 1. a kind of scissor-type insulate, including car body, the car body are equipped with headstock and compartment, and feature exists In, the platform assembly connected by scissors mechanism is equipped in the compartment,The platform assembly includes bracket, enclose platform and pushes oil cylinder, the bracket and to enclose platform be glass steel material, the bracket Both sides be equipped with a pair of guide rails, the bottom surface both side for enclosing platform is equipped with a pair of of guide sleeve, and the guide sleeve is adaptedly set in described lead On rail, the promotion oil cylinder, which is located at, to be enclosed between platform and bracket, and the cylinder body for pushing oil cylinder is located on bracket, pushes the liquid of oil cylinder Platform is enclosed in compression bar connection so that encloses platform horizontal anomalous movement and is located on the bracket；The scissors mechanism includes both sides scissor group disposed in parallel, and the scissor group includes several scissors pair, the scissor pair Including the scissor arms that a pair of cross is hingedly arranged, the scissor arms are glass steel material, are cut with scissors between the scissor arms of adjacent scissor pair It connects, is separately connected bracket positioned at the top both ends of the top scissor pair, is separately connected positioned at the bottom both ends of bottom scissor pair Compartment；Further include balance weight mechanism, the balance weight mechanism includes hydraulic cylinder two and strut, and two side rails of the bracket are in hollow pipe, The strut takes the shape of the letter U bar, and the strut is located at by two horizontal anomalous movement of hydraulic cylinder in the both sides hollow pipe of the bracket, the support It is detachably connected equipped with clump weight on bar；The hydraulic cylinder two is located on bracket, and the hydraulic cylinder two is opposite with the telescopic direction of oil cylinder is pushed.
- The aerial working platform vehicle 2. scissor-type according to claim 1 insulate, which is characterized in that position in the scissors mechanism Scissor in the top stretches out the direction inclination of bracket, the liquid towards platform is enclosed to being equipped with hydraulic cylinder one, the hydraulic cylinder one The cylinder body of cylinder pressure one is located in scissor arms, and platform is enclosed in the hydraulic stem connection of hydraulic cylinder one.
- The aerial working platform vehicle 3. scissor-type according to claim 1 insulate, which is characterized in that be located at cylinder on the guide rail The side top surface of body is equipped with fixed seat, the fixed seat and encloses and is equipped with spring between platform.
- 4. the scissor-type insulate aerial working platform vehicle according to claim 3, which is characterized in that the platform that encloses includes Four cycle side plates and a bottom plate, the side plate include the plate body of a pair of parallel setting, and several bullets are arranged in the cavity between a pair of of plate body Property body.
- 5. scissor-type insulation aerial working platform vehicle according to claim 1, which is characterized in that the guide rail is cut Face is rounded or rectangular.
- 6. according to the scissor-type insulation aerial working platform vehicle described in claim 3 or 4, which is characterized in that the scissor Mechanism is connected to by rotating platform in the compartment.
- 7. according to the scissor-type insulation aerial working platform vehicle described in claim 3 or 4, which is characterized in that the car body The upper lower part positioned at compartment is equipped with elevating lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610225638.4A CN105692513B (en) | 2016-04-12 | 2016-04-12 | A kind of scissor-type insulation aerial working platform vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610225638.4A CN105692513B (en) | 2016-04-12 | 2016-04-12 | A kind of scissor-type insulation aerial working platform vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105692513A CN105692513A (en) | 2016-06-22 |
| CN105692513B true CN105692513B (en) | 2018-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610225638.4A Active CN105692513B (en) | 2016-04-12 | 2016-04-12 | A kind of scissor-type insulation aerial working platform vehicle |
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| Country | Link |
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| CN (1) | CN105692513B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938626A (en) * | 2017-04-24 | 2017-07-11 | 山东七运集团有限公司 | A kind of self-propelled Visual retrieval car |
| CN108190794A (en) * | 2018-03-01 | 2018-06-22 | 南京博蓝奇智能科技有限公司 | Lifting telescopic device and can variant lifting floor truck |
| CN110877878B (en) * | 2018-12-04 | 2020-11-27 | 浙江固雅环境装备有限公司 | Engineering maintenance facility |
| CN110877881B (en) * | 2018-12-04 | 2020-12-11 | 衡阳捷邦科技有限公司 | Engineering construction structure |
| CN111188271B (en) * | 2018-12-04 | 2021-11-30 | 李学波 | Bridge construction structure |
| CN113541038B (en) * | 2021-06-30 | 2023-01-17 | 国网山东省电力公司栖霞市供电公司 | Vehicle-mounted work platform for live working |
| CN114261806B (en) * | 2021-12-23 | 2022-08-26 | 江苏京牧生物技术有限公司 | Safe lift fodder transportation platform |
| CN114873531B (en) * | 2022-05-18 | 2024-06-21 | 国家电网有限公司 | Electric power overhauling device |
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2016
- 2016-04-12 CN CN201610225638.4A patent/CN105692513B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| CN202143760U (en) * | 2011-03-03 | 2012-02-15 | 陈作应 | Hydraulic power and hinge connecting rod type rapid lifting aerial ladder truck |
| CN201971606U (en) * | 2011-03-30 | 2011-09-14 | 程长龙 | On-vehicle hydraulic high-altitude operation device |
| CN202529799U (en) * | 2011-12-09 | 2012-11-14 | 上海立风能源科技有限公司 | An automatic balance device for an overhead working platform |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105692513A (en) | 2016-06-22 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 225009 Weiyang Road, Jiangsu, China, No. 179, No. Applicant after: Yangzhou power supply branch, Jiangsu Electric Power Co., Ltd. Applicant after: Xuzhou Handler Special Vehicle Co., Ltd. Applicant after: State Grid Corporation of China Applicant after: Yangzhou Guangyuan Group Co., Ltd. Address before: 225009 Weiyang Road, Jiangsu, China, No. 179, No. Applicant before: YANGZHOU POWER SUPPLY COMPANY, STATE GRID JIANGSU ELECTRIC POWER COMPANY Applicant before: Xuzhou Handler Special Vehicle Co., Ltd. Applicant before: State Grid Corporation of China Applicant before: Yangzhou Guangyuan Group Co., Ltd. |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Yong Inventor after: Zheng Lei Inventor after: Sun Rong Inventor after: Chen Zhenghua Inventor after: Gao Xiaoning Inventor after: Wu Minxiu Inventor after: Li Jun Inventor after: Bo Yang Inventor after: Li Peipei Inventor after: Yin Yuandong Inventor after: Fan Zhengyong Inventor after: Wang Qiujun Inventor before: Xu Yong Inventor before: Zheng Lei Inventor before: Gao Xiaoning Inventor before: Wu Minxiu Inventor before: Li Jun Inventor before: Bo Yang Inventor before: Li Peipei Inventor before: Yin Yuandong Inventor before: Fan Zhengyong Inventor before: Wang Qiujun |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |