CN113036607A - Switch board with dust removal and heat radiation structure - Google Patents
Switch board with dust removal and heat radiation structure Download PDFInfo
- Publication number
- CN113036607A CN113036607A CN202110101131.9A CN202110101131A CN113036607A CN 113036607 A CN113036607 A CN 113036607A CN 202110101131 A CN202110101131 A CN 202110101131A CN 113036607 A CN113036607 A CN 113036607A
- Authority
- CN
- China
- Prior art keywords
- flabellum
- power distribution
- fixedly connected
- distribution cabinet
- dust removal
- 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.)
- Granted
Links
- 239000000428 dust Substances 0.000 title claims abstract description 31
- 230000005855 radiation Effects 0.000 title claims abstract description 8
- 241000883990 Flabellum Species 0.000 claims abstract description 48
- 230000017525 heat dissipation Effects 0.000 claims abstract description 14
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 244000309464 bull Species 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Images
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
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- 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
-
- 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
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
Abstract
The invention provides a power distribution cabinet with a dust removal and heat dissipation structure. This switch board with dust removal and heat radiation structure, lateral surface through at the bull stick is equipped with the flabellum, a side through the flabellum is the indent arc and is the setting of forty-five degrees, it makes the wind direction upwards to receive the bottom exhaust fan, thereby the indent cambered surface that the wind direction passes through flabellum one side makes the flabellum rotate, another side through the flabellum is the slope arc and is the setting of one hundred thirty-five degrees, reduce the resistance that the wind direction produced to the flabellum at the rotation in-process through the slope cambered surface, consequently, improve the slew velocity of flabellum, thereby improve the wind-force that the flabellum rotated the production, further improve radiating efficiency and dust removal effect to electronic.
Description
Technical Field
The invention relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet with a dust removal and heat dissipation structure.
Background
The power distribution cabinet (box) is a final-stage device of a power distribution system, is a general name of a motor control center and is used in occasions with dispersed loads and less loops; motor control centers are used in load concentration and loop-rich applications, where they distribute the power from a circuit of a higher level of distribution equipment to nearby loads, which provide protection, monitoring and control of the loads.
The internally mounted of switch board has a large amount of electronic components, use the in-process of circular telegram at the switch board, inside electronic components can produce the resistance, thereby produce a large amount of heats, because the inner space of switch board is less, most switch boards carry out the mode of convection current through casing outside air and quick-witted case rack equipment cabin inside air, but this kind of radiating mode is comparatively slow, simultaneously through outside air convection heat dissipation, wherein outside air contains impurity such as dust, be brought into inside the switch board easily simultaneously, the dust stays electronic components's surface can make electronic components's radiating efficiency reduce and increase electronic components's resistance, thereby lead to electronic components to damage easily.
Disclosure of Invention
In order to solve the technical problems, the invention provides a power distribution cabinet with a dust removal and heat dissipation structure, so as to solve the problems described in the background art.
The invention relates to a power distribution cabinet with a dust removal and heat dissipation structure, which is achieved by the following specific technical means: a power distribution cabinet with a dust removal and heat dissipation structure comprises a power distribution cabinet main body and a baffle plate, wherein the baffle plate is fixedly connected to the left side surface of the power distribution cabinet main body, a connecting plate is fixedly connected to the top of the power distribution cabinet main body, one end, away from the power distribution cabinet main body, of the connecting plate is fixedly connected with a top cover, the bottom of the inner wall of the power distribution cabinet main body is fixedly connected with an exhaust fan, one side of the inner wall of the power distribution cabinet main body is fixedly connected with a fixed plate, one side, away from the inner wall of the power distribution cabinet main body, of the fixed plate is fixedly connected with a rotating rod base, one side, away from the fixed plate, of the rotating rod base is fixedly connected with a rotating rod through a rotating shaft, the outer side surface of the, the left side fixedly connected with spring of connecting block, the spring is kept away from the one end nestification of connecting block and is provided with the sleeve, the fixedly connected with fixed block of center department of sleeve inner wall.
Preferably, the fixing plate is arranged in a wave shape, and a through hole is formed in the surface of the fixing plate.
Preferably, the periphery of the inner wall of the power distribution cabinet main body is provided with a fixing plate.
Preferably, ventilation holes are formed in the left side face, the right side face and the upper surface of the power distribution cabinet main body, and the power distribution cabinet main body is located under the baffle.
Preferably, the left side surface of the fan blade is in an inclined arc shape, and the inclined angle is one hundred thirty five degrees.
Preferably, the right side surface of the fan blade is arranged in an inwards concave arc shape, and the inwards concave radian is forty-five degrees.
Preferably, the two sliding plates and the two connecting blocks are symmetrically arranged at the center of the fan blade auxiliary plate.
Preferably, the length of the top of the fan blade is smaller than that of the bottom of the auxiliary plate of the fan blade.
Has the advantages that:
1. this kind of switch board with remove dust and heat radiation structure, be equipped with through the inside at the switch board main part and be wavy fixed plate, impurity such as dust is brought into inside the switch board main part through the outside air, the exhaust fan operation makes the wind direction upwards, the flabellum rotates the electronic components inside the switch board main part and removes dust and dispel the heat, prevent simultaneously that impurity such as dust from staying electronic components's surface, thereby impurity such as dust falls on the surface of fixed plate, the curved surface landing switch board bottom that the dust can pass through the fixed plate, prevent impurity such as dust from piling up to solidify and be not convenient for clear up.
2. This switch board with dust removal and heat radiation structure, lateral surface through at the bull stick is equipped with the flabellum, a side through the flabellum is the indent arc and is the setting of forty-five degrees, it makes the wind direction upwards to receive the bottom exhaust fan, thereby the indent cambered surface that the wind direction passes through flabellum one side makes the flabellum rotate, another side through the flabellum is the slope arc and is the setting of one hundred thirty-five degrees, reduce the resistance that the wind direction produced to the flabellum at the rotation in-process through the slope cambered surface, consequently, improve the slew velocity of flabellum, thereby improve the wind-force that the flabellum rotated the production, further improve radiating efficiency and dust removal effect to electronic.
3. This switch board with dust removal and heat radiation structure, through being equipped with the flabellum subplate in flabellum inside, the flabellum produces centrifugal force at the rotation in-process, the flabellum subplate is from the inside in-process promotion slide removal of being thrown away of flabellum, the length of flabellum subplate bottom is greater than the length at flabellum top, the flabellum is to behind the flabellum subplate fibre, the flabellum subplate is released the slide completely, thereby will enlarge the area of flabellum, the area of flabellum rotates the wind speed that produces the big more greatly, be convenient for improve the radiating efficiency.
4. This switch board with dust removal and heat radiation structure is equipped with the connecting block through the positive top at the slide, after the flabellum stall, centrifugal force disappears then, inside the inclined plane of flabellum subplate through flabellum subplate both sides was retrieved to the flabellum under the support that does not have the centrifugal force effect, the connecting block is in the effect of spring to the inside shrink removal of flabellum to in the connecting block drives the slide and gets into the flabellum, be favorable to accomodating the slide.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is a partial structural view of a fixing plate according to the present invention;
FIG. 4 is a partial structural view of a fan blade of the present invention;
FIG. 5 is a right side view of the fan blade of the present invention;
FIG. 6 is an enlarged view of the structure at A in FIG. 5 according to the present invention;
FIG. 7 is a schematic cross-sectional view of a fan blade according to the present invention;
FIG. 8 is a schematic view of the fan blade sub-plate of the present invention in an unfolded configuration.
In fig. 1 to 8, the correspondence between the component names and the reference numbers is:
1. a power distribution cabinet main body; 2. an exhaust fan; 3. a connecting plate; 4. a fixing plate; 5. a baffle plate; 6. a top cover; 7. a rotating rod; 8. a fan blade; 9. a rotating rod base; 10. a slide plate; 11. a fan blade subplate; 12. connecting blocks; 13. a spring; 14. a sleeve; 15. and (5) fixing blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
As shown in figures 1 to 8: the invention provides a technical scheme that: a concrete mixing device comprises a power distribution cabinet main body 1 and a baffle 5, wherein the baffle 5 is fixedly connected to the left side surface of the power distribution cabinet main body 1, a connecting plate 3 is fixedly connected to the top of the power distribution cabinet main body 1, one end of the connecting plate 3, which is far away from the power distribution cabinet main body 1, is fixedly connected with a top cover 6, an exhaust fan 2 is fixedly connected to the bottom of the inner wall of the power distribution cabinet main body 1, a fixing plate 4 is fixedly connected to one side of the inner wall of the power distribution cabinet main body 1, a rotating rod base 9 is fixedly connected to one side of the fixing plate 4, which is far away from the fixing plate 9, is fixedly connected with a rotating rod 7 through a rotating shaft, a fan blade 8 is fixedly connected to the outer side surface of the rotating rod 7, a fan blade auxiliary plate 11 is fixedly connected to, the left side face of the connecting block 12 is fixedly connected with a spring 13, one end, far away from the connecting block 12, of the spring 13 is provided with a sleeve 14 in a nested mode, and the center of the inner wall of the sleeve 14 is fixedly connected with a fixing block 15.
Further, fixed plate 4 is the wave setting, and the through-hole has been seted up on the surface of fixed plate 4, and the wave is provided with and does benefit to the back that prevents that the dust from getting into switch board main part 1, falls into inside certain department and piles up solidifying to be not convenient for clear up it, and be convenient for natural wind passes through the inside that the through-hole got into switch board main part 1.
Furthermore, all be equipped with fixed plate 4 around the 1 inner wall of switch board main part.
Further, the ventilation hole has all been seted up to switch board main part 1's left surface, right flank and upper surface, and be located baffle 5 under, be favorable to external natural wind to get into switch board main part 1 through the ventilation hole of switch board main part 1 left surface and right flank inside to the air of switch board main part 1 inside is heated by electronic components heat dissipation, and the air is heated the thermal expansion back density and is reduced, and the volume increases, and inside hot-air rebound passes through the ventilation hole discharge of upper surface.
Furthermore, the left side surface of the fan blade 8 is in the inclined arc shape, and the inclined angle is one hundred thirty five degrees, which is beneficial to the rotation of the fan blade 8, and the resistance of the wind to the fan blade 8 during the rotation is reduced by inclining the fan blade 8 one hundred thirty five degrees.
Furthermore, the right side surface of the fan blade 8 is in an inwards concave arc shape, and the inwards concave radian is forty-five degrees, so that the inwards concave arc surface at the right side of the fan blade 8 is blown by wind power, and rotation is generated.
Furthermore, the two sliding plates 10 and the two connecting blocks 12 are symmetrically arranged at the center of the fan blade auxiliary plate 11, the fan blade auxiliary plate 11 is thrown out from the inside of the fan blade 8 under the action of centrifugal force, and the two sliding plates 10 are pushed to move back to back in the process of throwing out the fan blade auxiliary plate 11.
Further, the length of the top of the fan blade 8 is smaller than that of the bottom of the fan blade auxiliary plate 11, and the length of the bottom of the fan blade auxiliary plate 11 after being thrown out by centrifugal force is larger than that of the top of the fan blade 8, so that the fan blade auxiliary plate 11 is prevented from being separated from the fan blade 8 under the action of the centrifugal force.
The working principle is as follows: the external natural air enters the power distribution cabinet main body 1 through the left side surface and the right side surface thereof, electronic components inside the power distribution cabinet main body 1 generate heat in the operation process to heat the air, so that the air is heated and expanded in volume, small in density and light in weight, the hot air moves upwards, the cold air is low in temperature and large in density and heavy in weight, the cold air moves downwards after entering the power distribution cabinet main body 1, the exhaust fan 2 rotates in operation to blow the cold air entering the bottom of the power distribution cabinet main body 1 upwards, the cold air is blown upwards to cool the electronic components, meanwhile, the wind power blows upwards to the fan blades 8, one side of the fan blades 8 is in an inwards concave arc shape to be rotated by the wind power, the resistance of the wind to the fan blades 8 when the fan blades 8 rotate is reduced by an oblique arc shape through the other side while the fan blades 8 rotate, the fan blades 8 generate centrifugal force, and the fan blade auxiliary plate 11 is thrown out of, flabellum auxiliary plate 11 promotes two slides 10 and removes by the in-process of throwing away, thereby two slides 10 follow flabellum 8's inside roll-off, flabellum auxiliary plate 11 is greater than flabellum 8 top length through bottom length and carries on spacingly, prevent that flabellum auxiliary plate 11 from being thrown away flabellum 8, carry on spacingly to two slides 10 simultaneously, prevent that two slides 10 from receiving the inside of retracting flabellum 8 of spring action, 11 roll-off of flabellum auxiliary plate promote two slides 10 increase flabellum 8's area, thereby the amount of wind that flabellum 8 produced at the rotation in-process is big more, be convenient for to the electronic components of switch board main part 1.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (8)
1. A power distribution cabinet with a dust removal and heat dissipation structure comprises a power distribution cabinet main body (1) and a baffle (5), and is characterized in that the baffle (5) is fixedly connected to the left side face of the power distribution cabinet main body (1), a connecting plate (3) is fixedly connected to the top of the power distribution cabinet main body (1), a top cover (6) is fixedly connected to one end, away from the power distribution cabinet main body (1), of the connecting plate (3), an exhaust fan (2) is fixedly connected to the bottom of the inner wall of the power distribution cabinet main body (1), a fixing plate (4) is fixedly connected to one side of the inner wall of the power distribution cabinet main body (1), a rotating rod base (9) is fixedly connected to one side, away from the fixing plate (4), of the rotating rod base (9), is fixedly connected with a rotating rod (7) through a rotating shaft, and fan blades (8) are fixedly, the bottom fixedly connected with flabellum subplate (11) of flabellum (8) inner wall, there is slide (10) on the right side of flabellum (8) inner wall through spout sliding connection, the positive top fixedly connected with connecting block (12) of slide (10), the left surface fixedly connected with spring (13) of connecting block (12), the one end nestification that connecting block (12) were kept away from in spring (13) is provided with sleeve (14), fixedly connected with fixed block (15) are located at the center of sleeve (14) inner wall.
2. The power distribution cabinet with the dust removal and heat dissipation structure according to claim 1, wherein the fixing plate (4) is disposed in a wave shape, and a through hole is formed in a surface of the fixing plate (4).
3. The switch board with dust removal and heat dissipation structure of claim 1, characterized in that the fixed plates (4) are arranged around the inner wall of the switch board main body (1).
4. The switch board with dust removal and heat radiation structure of claim 1, characterized in that the left side, the right side and the upper surface of the switch board main body (1) are provided with ventilation holes and are located under the baffle (5).
5. The power distribution cabinet with the dust removal and heat dissipation structure according to claim 1, wherein the left side surface of the fan blade (8) is in an inclined arc shape, and the inclined angle is one hundred thirty five degrees.
6. The power distribution cabinet with the dust removal and heat dissipation structure as recited in claim 1, wherein the right side surface of the fan blade (8) is disposed in an inward concave arc shape, and the inward concave arc is forty-five degrees.
7. The switch board with dust removal and heat dissipation structure of claim 1, wherein two sliding plates (10) and two connecting blocks (12) are symmetrically arranged at the center of the auxiliary blade plate (11).
8. The switch board with dust removal and heat dissipation structure of claim 1, characterized in that the length of the top of the fan blade (8) is less than the length of the bottom of the fan blade auxiliary plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110101131.9A CN113036607B (en) | 2021-04-26 | 2021-04-26 | Power distribution cabinet with dust removal and heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110101131.9A CN113036607B (en) | 2021-04-26 | 2021-04-26 | Power distribution cabinet with dust removal and heat radiation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113036607A true CN113036607A (en) | 2021-06-25 |
| CN113036607B CN113036607B (en) | 2024-04-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110101131.9A Active CN113036607B (en) | 2021-04-26 | 2021-04-26 | Power distribution cabinet with dust removal and heat radiation structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN113036607B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1055165A (en) * | 1964-01-02 | 1967-01-18 | Dowty Hydraulic Units Ltd | Improvements in or relating to engine cooling fans |
| US3891349A (en) * | 1972-02-22 | 1975-06-24 | Wallace Murray Corp | Cooling fan construction and method of making same |
| US20070092376A1 (en) * | 2005-10-26 | 2007-04-26 | Malone Christopher G | Electronics cooling fan with collapsible fan blade |
| US20120045331A1 (en) * | 2005-07-13 | 2012-02-23 | Fanaway Technology Hong Kong Ltd | Combined ceiling fan and light fitting |
| TWM447428U (en) * | 2012-07-27 | 2013-02-21 | Tul Corp | Extended blade structure |
| CN103939393A (en) * | 2013-09-26 | 2014-07-23 | 郭圣君 | Ceiling fan with telescopic fan blades |
| CN204357730U (en) * | 2014-12-24 | 2015-05-27 | 段淇迈 | Automatic dust removing ceiling fan |
| CN204795926U (en) * | 2015-07-03 | 2015-11-18 | 南安市德华电子设备厂 | Dustproof and waterproof regulator cubicle |
| CN109687642A (en) * | 2018-11-19 | 2019-04-26 | 盐城唯宏特通用机械有限公司 | A kind of air cooling equipment of machine shaft Synchronous Transmission |
| CN109842040A (en) * | 2017-11-28 | 2019-06-04 | 桂林洁宇环保科技有限责任公司 | The heat radiating type power distribution cabinet of dustproof and rainproof |
| CN110783824A (en) * | 2019-11-13 | 2020-02-11 | 辽东学院 | Moisture-proof electrical cabinet |
| CN210075805U (en) * | 2019-05-15 | 2020-02-14 | 青岛三爱众力新能源科技有限公司 | Self-radiating structure of air conditioner control box |
| CN210723912U (en) * | 2019-07-24 | 2020-06-09 | 兴能电力建设有限公司 | Novel box-type substation |
| CN210926805U (en) * | 2019-11-29 | 2020-07-03 | 程军 | Electric automatization control's heat dissipation formula electric wire netting switch board |
| CN211909375U (en) * | 2020-03-04 | 2020-11-10 | 李延北 | Control cabinet for electronic engineering |
| CN212343059U (en) * | 2020-06-29 | 2021-01-12 | 成都华湖电器设备制造有限公司 | Multifunctional alternating-current low-voltage power distribution cabinet |
-
2021
- 2021-04-26 CN CN202110101131.9A patent/CN113036607B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1055165A (en) * | 1964-01-02 | 1967-01-18 | Dowty Hydraulic Units Ltd | Improvements in or relating to engine cooling fans |
| US3891349A (en) * | 1972-02-22 | 1975-06-24 | Wallace Murray Corp | Cooling fan construction and method of making same |
| US20120045331A1 (en) * | 2005-07-13 | 2012-02-23 | Fanaway Technology Hong Kong Ltd | Combined ceiling fan and light fitting |
| US20070092376A1 (en) * | 2005-10-26 | 2007-04-26 | Malone Christopher G | Electronics cooling fan with collapsible fan blade |
| TWM447428U (en) * | 2012-07-27 | 2013-02-21 | Tul Corp | Extended blade structure |
| CN103939393A (en) * | 2013-09-26 | 2014-07-23 | 郭圣君 | Ceiling fan with telescopic fan blades |
| CN204357730U (en) * | 2014-12-24 | 2015-05-27 | 段淇迈 | Automatic dust removing ceiling fan |
| CN204795926U (en) * | 2015-07-03 | 2015-11-18 | 南安市德华电子设备厂 | Dustproof and waterproof regulator cubicle |
| CN109842040A (en) * | 2017-11-28 | 2019-06-04 | 桂林洁宇环保科技有限责任公司 | The heat radiating type power distribution cabinet of dustproof and rainproof |
| CN109687642A (en) * | 2018-11-19 | 2019-04-26 | 盐城唯宏特通用机械有限公司 | A kind of air cooling equipment of machine shaft Synchronous Transmission |
| CN210075805U (en) * | 2019-05-15 | 2020-02-14 | 青岛三爱众力新能源科技有限公司 | Self-radiating structure of air conditioner control box |
| CN210723912U (en) * | 2019-07-24 | 2020-06-09 | 兴能电力建设有限公司 | Novel box-type substation |
| CN110783824A (en) * | 2019-11-13 | 2020-02-11 | 辽东学院 | Moisture-proof electrical cabinet |
| CN210926805U (en) * | 2019-11-29 | 2020-07-03 | 程军 | Electric automatization control's heat dissipation formula electric wire netting switch board |
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| CN212343059U (en) * | 2020-06-29 | 2021-01-12 | 成都华湖电器设备制造有限公司 | Multifunctional alternating-current low-voltage power distribution cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113036607B (en) | 2024-04-05 |
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Effective date of registration: 20240311 Address after: 063000 West side of Jingshisan Road and south side of Gangcheng Road in Qian'an Economic Development Zone, Tangshan City, Hebei Province Applicant after: TANGSHAN RUIKUO AUTOMATION EQUIPMENT Co.,Ltd. Country or region after: China Address before: 1 No. 211167 Jiangsu city of Nanjing province Jiangning Science Park Hongjing Road Applicant before: Wang Fang Country or region before: China |
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