CN112003151A - Power transformer switch cabinet capable of improving impact protection efficiency - Google Patents
Power transformer switch cabinet capable of improving impact protection efficiency Download PDFInfo
- Publication number
- CN112003151A CN112003151A CN202010916627.7A CN202010916627A CN112003151A CN 112003151 A CN112003151 A CN 112003151A CN 202010916627 A CN202010916627 A CN 202010916627A CN 112003151 A CN112003151 A CN 112003151A
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- CN
- China
- Prior art keywords
- buffer
- switch cabinet
- power transformer
- cabinet body
- cubical switchboard
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/54—Anti-seismic devices or installations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
- H02B1/052—Mounting on rails
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention relates to the field of power transformer switch cabinet equipment, in particular to a power transformer switch cabinet for improving impact protection efficiency, which comprises a switch cabinet body and a switch device, wherein buffer cavities are formed in the inner walls of two sides of the switch cabinet body, buffer devices are movably arranged in the buffer cavities, rotating plates are movably arranged on the outer sides of buffer columns movably arranged on two sides in the switch cabinet body, liquid water is filled in the buffer cavities, one end of each buffer device penetrates through the buffer cavities, so that impact can be absorbed when the outer side of the switch cabinet body is impacted, a certain buffer effect is achieved, water is sprayed out from a gap between each buffer device and each buffer cavity to the outside, the absorption efficiency of impact force is further improved, the impact force is prevented from being transmitted to the inside of the switch cabinet body, and an adhesive layer is fixedly arranged on the inner side of one end, which penetrates out of the switch cabinet body, so that the buffer device can be adhered to the outer side of the switch cabinet body at ordinary times, and the sealing performance of the buffer cavity is ensured.
Description
Technical Field
The invention relates to the field of power transformer switch cabinet equipment, in particular to a power transformer switch cabinet capable of improving impact protection efficiency.
Background
The power transformer is a static electric equipment for transforming ac voltage and current to transmit ac energy, and it realizes electric energy transmission according to the principle of electromagnetic induction, and its uses can be divided into power transformer, test transformer, instrument transformer and special purpose transformer, and it is a necessary equipment for power transmission and distribution and power consumer distribution.
The existing power transformer switch device is usually protected by using a cabinet body, so that the cabinet body is not damaged by the external environment, but the inside of the existing power transformer switch cabinet is not provided with a device for protecting the switch device when colliding, so that the outside of the switch cabinet body is easily damaged and leaked by the internal switch device after being collided, and secondary damage is caused.
Disclosure of Invention
The utility model provides an improve power transformer cubical switchboard of striking protection efficiency, the device can receive the striking back to power transformer cubical switchboard, improves the protection to internal switching device, and then reaches the effect of avoiding the impaired electric leakage of switching device to take place the secondary damage.
The utility model provides an improve power transformer cubical switchboard of striking protection efficiency, includes the cubical switchboard body, switching device, the inside cushion chamber of having seted up of cubical switchboard body both sides inner wall, the inside movable mounting of cushion chamber has buffer, the inside both sides movable mounting of the cubical switchboard body has the cushion column the movable mounting in the cushion column outside has the rotor plate.
Preferably, liquid water is filled in the buffer cavity, and one end of the buffer device penetrates out of the buffer cavity.
Preferably, an outer convex arc plate is fixedly installed on one side of the buffer device, and the outer convex arc plate is arranged in a continuously bent wavy manner.
Preferably, a transmission gear is movably mounted inside the inner wall of the switch cabinet body, and gear teeth meshed with the transmission gear are arranged on one side, close to the transmission gear, of the buffer device.
Preferably, sliding grooves are formed in the upper side and the lower side of the interior of the switch cabinet body, a driving belt is movably mounted in the sliding grooves, and sliding rods are fixedly mounted on the upper side and the lower side of the switch device.
Preferably, the rotating plate is movably connected with the inner wall of the switch cabinet body, a movable sleeve is movably mounted inside the buffer column, the upper side and the lower side of the rotating plate penetrate through the inside of the movable sleeve, and a spring cavity is formed in the inner side of the movable sleeve.
Preferably, the middle end of the inside of the buffer column is movably provided with a trigger block, one end of the trigger block in the inside of the buffer column is arranged in a triangular shape, and one end of the movable sleeve, which is close to the trigger block, is obliquely arranged in parallel with the movable sleeve.
Preferably, the inner side of one end of the buffer device penetrating out of the switch cabinet body is fixedly provided with an adhesive layer.
Compared with the prior art, the invention has the following beneficial effects:
1. liquid water is filled in the buffer cavity, one end of the buffer device penetrates out of the buffer cavity, so that impact can be absorbed when the outer side of the switch cabinet body is impacted, a certain buffering effect is achieved, water is sprayed out from the gap between the buffer device and the buffer cavity to the outside, the absorption efficiency of impact force is further improved, the impact force is prevented from being transmitted to the inner part of the switch cabinet body, an outer convex arc plate is fixedly installed on one side of the buffer device, the outer convex arc plate is in a continuously bent wavy arrangement, acting force can be applied to the outer convex arc plate while water in the buffer cavity is sprayed out, the buffer device is taken out together, the outward sprayed water flow needs to be intermittently sprayed along with the gap between the arc wavy surface and the buffer cavity by utilizing the arc surface of the outer convex arc plate, the water flow is limited to be slowly sprayed relatively, and the impact absorption efficiency is further improved, wherein wear out the inboard fixed mounting of one end of the cubical switchboard body through buffer and paste the layer, make buffer can the adhesion in the cubical switchboard body outside at ordinary times, guarantee the leakproofness of cushion chamber.
2. There is drive gear through the inside movable mounting of switch cabinet internal wall, and one side that buffer is close to drive gear is provided with the teeth of a cogwheel rather than the interlock, make buffer can drive gear and rotate when outwards moving, the sliding tray has been seted up to both sides about the internal portion of rethread switch cabinet, and the inside movable mounting of sliding tray has the drive belt, and both sides fixed mounting about the switching device has the slide bar, then be connected with the drive belt interlock when drive gear, just can utilize the drive belt to order about the slide bar that sets up in the sliding tray inside and remove, and then drive switching device and remove to one side of keeping away from the impact, pull open switching device and the distance that receives impact one side, furthest avoids switching device to receive the harm.
3. The inner wall of the switch cabinet body is movably connected with the rotating plate, the movable sleeve is movably arranged in the buffer column, the upper side and the lower side of the rotating plate penetrate through the inner part of the movable sleeve, when the buffer cavity cannot absorb all impact and impact force continues to move towards the inner part of the switch cabinet body to enable the rotating plate to rotate, a spring cavity is formed in the inner side of the movable sleeve, a connecting rod on the outer side of the rotating plate can compress a spring in the spring cavity when the rotating plate rotates, so that kinetic energy is further absorbed, meanwhile, a trigger block is movably arranged at the middle end in the buffer column, one end of the trigger block in the buffer column is arranged in a triangular shape, one end of the movable sleeve, close to the trigger block, is obliquely arranged in parallel with the trigger block, after the switch device applies acting force to the trigger block, the trigger block can move by using the inclined plane movable sleeve, and further the spring cavity is, thereby when switching device drives opposite side bumping post in order to keep away from the impact direction and removes along the shifting chute, just can not receive great resistance to guarantee switching device's removal efficiency, further improve switching device's damage prevention efficiency.
Drawings
FIG. 1 is a front view of a switchgear body of the present invention;
FIG. 2 is a perspective view of the interior of the switchgear body of the present invention;
FIG. 3 is a top perspective view of the switchgear body of the present invention;
FIG. 4 is an enlarged view taken at A of FIG. 3 according to the present invention;
FIG. 5 is an inside perspective view of the sliding sleeve of the present invention;
FIG. 6 is a top view of the spring chamber of the present invention;
FIG. 7 is an internal perspective view of a strut in accordance with the present invention.
In FIGS. 1-7: 1-switch cabinet body, 2-buffer device, 3-buffer cavity, 4-outer convex arc plate, 5-transmission gear, 6-sliding groove, 7-transmission belt, 8-switch device, 9-sliding rod, 10-rotating plate, 11-buffer column, 12-moving sleeve, 13-trigger block, 14-moving groove, 15-sticking layer and 16-spring cavity.
Detailed Description
Referring to fig. 1 to 7, a schematic diagram of a planar structure and a schematic diagram of a three-dimensional structure of a power transformer switch cabinet for improving impact protection efficiency are shown.
The utility model provides an improve power transformer cubical switchboard of striking protection efficiency, includes the cubical switchboard body 1, switching device 8, and 1 both sides inner wall of the cubical switchboard body is inside to have seted up cushion chamber 3, and 3 inside movable mounting in cushion chamber have buffer 2, and 1 inside both sides movable mounting of the cubical switchboard body has 11 buffering posts of cushion post 11 outside movable mounting to have rotor plate 11.
In concrete implementation, the inside packing of cushion chamber 3 has liquid water, and buffer 2 wears out the inside setting of cushion chamber 3 for one end for when the cubical switchboard body 1 outside receives the striking, can absorb the impact, when playing certain cushioning effect, spout outside from the clearance of buffer 2 with cushion chamber 3 through water, thereby further improve the absorption efficiency to the impact and avoid to the inside transmission of cubical switchboard body 1.
In concrete implementation, buffer 2 one side fixed mounting has outer convex arc board 4, outer convex arc board 4 is the wavy setting of buckling in succession, can exert the effort to outer convex arc board 4 when making 3 interior waters of cushion chamber outwards spun, make and take out buffer 2 together outwards, thereby utilize outer convex arc board 4 cambered surface to make outside water current that sprays need carry out intermittent type along with the clearance of arc wave face and cushion chamber 3 and spray restriction rivers slowly relatively, further improve the efficiency of absorbing the impact.
In the specific implementation, a transmission gear 5 is movably mounted inside the inner wall of the switch cabinet body 1, and one side, close to the transmission gear 5, of the buffer device 2 is provided with gear teeth meshed with the transmission gear 5, so that the buffer device 2 can drive the transmission gear 5 to rotate while moving outwards.
In concrete implementation, sliding tray 6 has been seted up to both sides about the cubical switchboard body 1 is inside, the inside movable mounting of sliding tray 6 has drive belt 7, both sides fixed mounting has slide bar 9 about switching device 8, then be connected with the interlock of drive belt 7 when drive gear 5, just can utilize drive belt 7 to order about the slide bar 9 that sets up in sliding tray 6 inside and remove, and then drive switching device 8 and remove to one side of keeping away from the impact, pull open switching device 8 and receive the distance of impact one side, furthest avoids switching device to receive the harm.
In the concrete implementation, rotor plate 10 and the 1 inner wall swing joint of the cubical switchboard body, the inside movable mounting of buffer column 11 has removal cover 12, both sides pass inside removal cover 12 about rotor plate 10, remove the cover 12 inboard and seted up spring chamber 16, then can not absorb whole impacts when buffer chamber 3, when the impact force continues to make rotor plate 10 rotatory to the inside removal of the cubical switchboard body 1, can utilize to remove the cover 12 inboard and seted up spring chamber 16, can let the connecting rod in its outside compress the inside spring of spring chamber 16 when rotor plate 10 is rotatory, thereby further absorb kinetic energy.
In specific implementation, the inside middle-end movable mounting of buffer post 11 has trigger block 13, trigger block 13 is the triangle-shaped setting in the inside one end of buffer post 11, the removal that removes cover 12 and be close to trigger block 13 sets up for the slope rather than being parallel, so that switching device 8 exerts the effort back to trigger block 13, trigger block 13 just can utilize the inclined plane to order about and remove cover 12 and remove, and then make spring chamber 6 keep away from the connecting rod on the rotor plate 10, thereby when switching device 8 orders about in order to keep away from the impact direction that opposite side buffer post 11 moves along moving chute 14, just can not receive great resistance, thereby guarantee switching device 8's removal efficiency, further improve switching device 8's damage-proof efficiency.
In specific implementation, the buffer device 2 penetrates out of the inner side of one end of the switch cabinet body 1 and is fixedly provided with the paste layer 15, so that the buffer device 2 can be adhered to the outer side of the switch cabinet body 1 at ordinary times, and the sealing performance of the buffer cavity 3 is ensured.
The working principle of the power transformer switch cabinet for improving the impact protection efficiency is as follows.
Firstly, buffer cavities 3 are arranged on two sides of a switch cabinet body 1, liquid water is filled in the buffer cavities 3, one end of each buffer device 2 penetrates through the buffer cavity 3, so that impact can be absorbed when the outer side of the switch cabinet body 1 is impacted, a certain buffer effect is achieved, water is sprayed out from the gap between each buffer device 2 and each buffer cavity 3 to the outside through the gap between each buffer device 2 and each buffer cavity 3, the absorption efficiency of impact force is further improved, the impact force is prevented from being transmitted to the inner side of the switch cabinet body 1, an outer convex arc plate 4 is fixedly installed on one side of each buffer device 2, the outer convex arc plate 4 is in a continuously bent wavy arrangement, acting force can be applied to the outer convex arc plate 4 while water in each buffer cavity 3 is sprayed out, the buffer devices 2 are taken out together, the outward sprayed water flow needs to be intermittently sprayed along with the gaps between the arc wavy surfaces and the buffer cavities 3 by utilizing the cambered surfaces of the outer convex arc plates 4, further improving the efficiency of impact absorption, wherein an adhesive layer 15 is fixedly arranged on the inner side of one end of the buffering device 2 penetrating out of the switch cabinet body 1, so that the buffering device 2 can be adhered to the outer side of the switch cabinet body 1 at ordinary times to ensure the sealing performance of the buffer cavity 3, a transmission gear 5 is movably arranged in the inner wall of the switch cabinet body 1, one side of the buffering device 2 close to the transmission gear 5 is provided with gear teeth meshed with the transmission gear 5, so that the buffering device 2 can drive the transmission gear 5 to rotate while moving outwards, sliding grooves 6 are formed in the upper side and the lower side of the switch cabinet body 1, a transmission belt 7 is movably arranged in the sliding grooves 6, and sliding rods 9 are fixedly arranged on the upper side and the lower side of the switch device 8, when the transmission gear 5 is meshed with the transmission belt 7, the sliding rods 9 arranged in the sliding grooves 6, and then drive the switchgear 8 to move to the side far away from the impact, pull open the distance between switchgear 8 and the side impacted, avoid the switchgear to be damaged to the greatest extent, wherein through the swing joint of the rotating plate 10 and the inner wall of the switchgear body 1, and the movable sleeve 12 is installed inside the buffer post 11, and the upper and lower both sides of the swing joint 10 pass through the inside of the movable sleeve 12, then when the buffer chamber 3 can not absorb all impacts, the impact force continues to move to the inside of the switchgear body 1 to make the swing joint 10 rotate, can utilize the inside of the movable sleeve 12 to open up the spring chamber 16, when the swing joint 10 rotates, can let its outside connecting rod compress the spring inside the spring chamber 16, thus while further absorbing kinetic energy, can through the inside middle end movable mounting of the buffer post 11 has the trigger block 13, and the trigger block 13 is set up for the triangle shape at the inside of the buffer post 11, and the end of the movable sleeve 12 close to the trigger block 13 is set up for the slope, so that switching device 8 exerts the effort back to triggering piece 13, trigger piece 13 just can utilize the inclined plane to order about and remove cover 12 and remove, and then make spring chamber 6 keep away from the connecting rod on the rotor plate 10 to when switching device 8 orders about opposite side bumping post 11 to remove along moving chute 14 for keeping away from the impact direction, just can not receive great resistance, thereby guarantee switching device 8's removal efficiency, further improve switching device 8's damage prevention efficiency.
Claims (8)
1. The utility model provides an improve power transformer cubical switchboard of striking protection efficiency, includes the cubical switchboard body (1), switching device (8), its characterized in that: the utility model discloses a cubical switchboard body, including cubical switchboard body (1) both sides inner wall inside have seted up cushion chamber (3), the inside movable mounting of cushion chamber (3) has buffer (2), the cubical switchboard body (1) inside both sides movable mounting have buffer post (11) outside movable mounting has rotor plate (11).
2. A power transformer switchgear for improving efficiency of protection against impacts according to claim 1, characterized in that: the buffer cavity (3) is filled with liquid water, and one end of the buffer device (2) penetrates out of the buffer cavity (3) to be arranged.
3. A power transformer switchgear for improving efficiency of protection against impacts according to claim 1, characterized in that: an outer convex arc plate (4) is fixedly installed on one side of the buffer device (2), and the outer convex arc plate (4) is arranged in a continuously bent wavy mode.
4. A power transformer switchgear for improving efficiency of protection against impacts according to claim 1, characterized in that: a transmission gear (5) is movably mounted inside the inner wall of the switch cabinet body (1), and gear teeth meshed with the transmission gear (5) are arranged on one side, close to the transmission gear (5), of the buffer device (2).
5. A power transformer switchgear with improved impact protection efficiency according to claims 1 and 4, characterized in that: sliding grooves (6) are formed in the upper side and the lower side of the interior of the switch cabinet body (1), a driving belt (7) is movably mounted in the sliding grooves (6), and sliding rods (9) are fixedly mounted on the upper side and the lower side of the switch device (8).
6. A power transformer switchgear for improving efficiency of protection against impacts according to claim 1, characterized in that: the novel switch cabinet is characterized in that the rotating plate (10) is movably connected with the inner wall of the switch cabinet body (1), the buffer column (11) is movably provided with a movable sleeve (12), the upper side and the lower side of the rotating plate (10) penetrate through the movable sleeve (12), and the inner side of the movable sleeve (12) is provided with a spring cavity (16).
7. A power transformer switchgear with improved impact protection efficiency according to claims 1 and 6, characterized in that: buffer column (11) inside middle-end movable mounting has trigger block (13), trigger block (13) are set up for triangle-shaped in buffer column (11) inside one end, the one end that removes cover (12) and is close to trigger block (13) sets up for the slope rather than parallel.
8. A power transformer switchgear for improving efficiency of protection against impacts according to claim 1, characterized in that: and an adhesive layer (15) is fixedly arranged on the inner side of one end of the buffer device (2) penetrating out of the switch cabinet body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010916627.7A CN112003151B (en) | 2020-09-03 | 2020-09-03 | Power transformer switch cabinet capable of improving impact protection efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010916627.7A CN112003151B (en) | 2020-09-03 | 2020-09-03 | Power transformer switch cabinet capable of improving impact protection efficiency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112003151A true CN112003151A (en) | 2020-11-27 |
| CN112003151B CN112003151B (en) | 2023-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010916627.7A Active CN112003151B (en) | 2020-09-03 | 2020-09-03 | Power transformer switch cabinet capable of improving impact protection efficiency |
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| Country | Link |
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| CN (1) | CN112003151B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101515791B1 (en) * | 2014-08-21 | 2015-05-04 | 성보전기공업 주식회사 | Earthquake-proofing distribute & switch board |
| CN206834536U (en) * | 2017-06-12 | 2018-01-02 | 安徽伟合电子科技有限公司 | A kind of anticollision type outdoor electricity distribution cabinet |
| CN109244853A (en) * | 2018-10-18 | 2019-01-18 | 河南锐盛电力科技有限公司 | A kind of electric power construction field electric power installation security protective device |
| CN109451671A (en) * | 2018-12-06 | 2019-03-08 | 奥士康科技股份有限公司 | A kind of plate frame for preventing from falling apart |
| CN110130248A (en) * | 2019-05-21 | 2019-08-16 | 赵艳芹 | A kind of cleaning buffer structure of tide lane isolation water hitching post |
| CN209563009U (en) * | 2018-12-21 | 2019-10-29 | 南京赛曼网络科技发展有限公司 | A kind of energy island terminal system for power industry debugging training |
| CN210720487U (en) * | 2019-08-12 | 2020-06-09 | 博硕科技(江西)有限公司 | Stable support of withstand voltage tester |
-
2020
- 2020-09-03 CN CN202010916627.7A patent/CN112003151B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101515791B1 (en) * | 2014-08-21 | 2015-05-04 | 성보전기공업 주식회사 | Earthquake-proofing distribute & switch board |
| CN206834536U (en) * | 2017-06-12 | 2018-01-02 | 安徽伟合电子科技有限公司 | A kind of anticollision type outdoor electricity distribution cabinet |
| CN109244853A (en) * | 2018-10-18 | 2019-01-18 | 河南锐盛电力科技有限公司 | A kind of electric power construction field electric power installation security protective device |
| CN109451671A (en) * | 2018-12-06 | 2019-03-08 | 奥士康科技股份有限公司 | A kind of plate frame for preventing from falling apart |
| CN209563009U (en) * | 2018-12-21 | 2019-10-29 | 南京赛曼网络科技发展有限公司 | A kind of energy island terminal system for power industry debugging training |
| CN110130248A (en) * | 2019-05-21 | 2019-08-16 | 赵艳芹 | A kind of cleaning buffer structure of tide lane isolation water hitching post |
| CN210720487U (en) * | 2019-08-12 | 2020-06-09 | 博硕科技(江西)有限公司 | Stable support of withstand voltage tester |
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| Publication number | Publication date |
|---|---|
| CN112003151B (en) | 2023-08-25 |
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Effective date of registration: 20230726 Address after: Building 1, Courtyard 2, Juhe Fourth Street, Tongzhou District, Beijing, 101149 Applicant after: BEIJING GAFA ELECTRIC Co.,Ltd. Address before: 338000 Unit 8, Unit 4, Building 6, 21 Changqing South Road, Yushui District, Xinyu City, Jiangxi Province Applicant before: Hou Yanjuan |
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