CN114710918A - Weak current control device based on Internet of things - Google Patents
Weak current control device based on Internet of things Download PDFInfo
- Publication number
- CN114710918A CN114710918A CN202210502972.5A CN202210502972A CN114710918A CN 114710918 A CN114710918 A CN 114710918A CN 202210502972 A CN202210502972 A CN 202210502972A CN 114710918 A CN114710918 A CN 114710918A
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- China
- Prior art keywords
- cabinet body
- rotating
- current control
- weak current
- control device
- 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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- 238000009423 ventilation Methods 0.000 claims abstract description 33
- 230000017525 heat dissipation Effects 0.000 claims abstract description 32
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1401—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means
- H05K7/1402—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20172—Fan mounting or fan specifications
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to the technical field of weak current control, and discloses a weak current control device based on the Internet of things, which comprises a cabinet body, a heat dissipation mechanism and an installation mechanism, wherein a cabinet door is rotatably connected to an opening of the cabinet body; the mounting mechanism comprises a supporting rod fixedly connected with the cabinet body back plate; the heat dissipation mechanism comprises sliding grooves arranged on two sides of a backboard of a cabinet body, sliding grooves are connected with sliding seats in a sliding mode, a lifting assembly for driving the sliding seats to move is arranged on the cabinet body, the sliding seats are connected with a rotating rod in a rotating mode, a driving gear is arranged at the end of the rotating rod, a rack matched with the driving gear is arranged on the backboard of the cabinet body, two ends of a fixed plate fixedly connected with the sliding seats are provided with first ventilation assemblies connected with the rotating rod in a rotating mode, and second ventilation assemblies rotating with the rotating rod in a rotating mode are arranged on the sliding seats. The invention is suitable for a weak current control device based on the Internet of things, and the first ventilation assembly and the second ventilation assembly are driven to move up and down through the lifting assembly, so that the heat dissipation treatment is realized.
Description
Technical Field
The invention relates to the technical field of weak current control, in particular to a weak current control device based on the Internet of things.
Background
The thing networking means through various information sensor, radio frequency identification technology, global positioning system, infrared inductor, various devices and technologies such as laser scanner, and the thing networking need use a large amount of electrical components to control work at the in-process of work, just needs a weak current case to assemble these electrical components this moment.
However, some existing weak current boxes are single in structure and poor in heat dissipation effect, and when the weak current boxes are used for installing electric elements of the internet of things, the whole system is wrong due to insufficient heat dissipation, so that the existing weak current boxes need to be improved.
Disclosure of Invention
The invention provides a weak current control device based on the Internet of things, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a weak current control device based on the Internet of things comprises a cabinet body, a heat dissipation mechanism and an installation mechanism, wherein a cabinet door is rotatably connected to an opening of the cabinet body;
the mounting mechanism comprises a supporting rod fixedly connected with the back plate of the cabinet body, one side of the supporting rod, which is far away from the ground, is rotatably connected with one end of the rotating plate, and the other end of the rotating plate is rotatably connected with the mounting plate;
the heat dissipation mechanism comprises sliding grooves arranged on two sides of a backboard of a cabinet body, sliding grooves are connected with sliding seats in a sliding mode, a lifting assembly for driving the sliding seats to move is arranged on the cabinet body, the sliding seats are connected with a rotating rod in a rotating mode, a driving gear is arranged at the end of the rotating rod, a rack matched with the driving gear is arranged on the backboard of the cabinet body, two ends of a fixed plate fixedly connected with the sliding seats are provided with first ventilation assemblies connected with the rotating rod in a rotating mode, and second ventilation assemblies rotating with the rotating rod in a rotating mode are arranged on the sliding seats.
As a preferable technical scheme of the invention, the side wall and the back plate of the cabinet body are both provided with air holes.
In a preferred embodiment of the present invention, the mounting plate is a perforated plate.
As a preferable technical solution of the present invention, the first ventilation assembly and the second ventilation assembly are matched in air flow direction.
As a preferred technical scheme of the invention, the first ventilation assembly comprises a first rotating shaft rotationally connected with the fixed plate, a first heat dissipation fan is arranged at one end of the first rotating shaft away from the center of the cabinet body, a second bevel gear is arranged at one end of the first rotating shaft close to the center of the cabinet body, the second bevel gear is in meshing connection with a first bevel gear, and the first bevel gear is fixedly connected with the rotating rod.
As a preferred technical scheme of the invention, the second ventilation assembly comprises a second rotating shaft which is rotatably connected with the sliding seat, a driven gear which is meshed with the driving gear is arranged on the second rotating shaft, and a second heat dissipation fan is arranged at the end part of the second rotating shaft.
As a preferred technical scheme of the invention, the lifting assembly comprises a screw rod which is rotatably connected with the cabinet body, and the screw rod is in threaded connection with the sliding seat.
As a preferable technical scheme, the lifting assembly further comprises a driving motor arranged on the cabinet body, an output shaft of the driving motor is fixedly connected with a third bevel gear, two sides of the third bevel gear are meshed and connected with a fourth bevel gear, the fourth bevel gear is fixedly connected with one end of a third rotating shaft, the other end of the third rotating shaft is fixedly connected with a fifth bevel gear, the fifth bevel gear is meshed and connected with a sixth bevel gear, and the sixth bevel gear is fixedly connected with a screw rod.
The invention has the following advantages:
the weak current control device based on the Internet of things is suitable for the weak current control device based on the Internet of things, the first ventilation assembly and the second ventilation assembly are driven to move up and down through the lifting assembly, heat dissipation is achieved, the heat dissipation condition of the interior of the whole cabinet body is good, the mounting plate can extend out of the cabinet body, and therefore electrical components can be mounted more conveniently.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a weak current control device based on the internet of things.
Fig. 2 is a schematic structural diagram of a mounting mechanism in a weak current control device based on the internet of things.
Fig. 3 is a side view of a mounting mechanism in a weak current control device based on the internet of things.
Fig. 4 is a schematic structural diagram of a heat dissipation mechanism in a weak current control device based on the internet of things.
Fig. 5 is a schematic structural diagram of a first ventilation assembly and a second ventilation assembly in a weak current control device based on the internet of things.
Fig. 6 is a top view of a first ventilation assembly and a second ventilation assembly in a weak current control device based on the internet of things.
Fig. 7 is a schematic structural diagram of a lifting assembly in a weak current control device based on the internet of things.
In the figure: 1. a cabinet body; 2. a cabinet door; 3. a heat dissipation mechanism; 4. an installation mechanism; 5. a support bar; 6. a rotating plate; 7. mounting a plate; 8. air holes are formed; 9. a lifting assembly; 10. a chute; 11. a sliding seat; 12. a fixing plate; 13. a first heat dissipation fan; 14. a second bevel gear; 15. a first bevel gear; 16. a second heat dissipation fan; 17. a second rotating shaft; 18. a driven gear; 19. a driving gear; 20. a rack; 21. a screw rod; 22. a first rotating shaft; 23. rotating the rod; 24. a first vent assembly; 25. a second vent assembly; 26. a sixth bevel gear; 27. a fifth bevel gear; 28. a third rotating shaft; 29. a bearing seat; 30. a fourth bevel gear; 31. a third bevel gear; 32. the motor is driven.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In an embodiment, please refer to fig. 1 to 7, a weak current control device based on the internet of things includes a cabinet 1, the side wall and the back plate of the cabinet 1 are both provided with air holes 8, the heat dissipation treatment of the cabinet 1 is realized by the arrangement of the air holes 8, an opening of the cabinet 1 is rotatably connected with a cabinet door 2, the front side of the cabinet 1 is open, the cabinet door 2 can be arranged on both the left and right sides of the cabinet 1, or only one side of the cabinet 1 is provided with the cabinet door 2, the closing of the cabinet 1 is realized by the opening and closing of the cabinet door 2, and the weak current control device further includes a heat dissipation mechanism 3 and an installation mechanism 4;
the mounting mechanism 4 comprises a supporting rod 5 fixedly connected with the back plate of the cabinet body 1, one side of the supporting rod 5 far away from the ground is rotatably connected with one end of a rotating plate 6, the other end of the rotating plate 6 is rotatably connected with a mounting plate 7, the rear end of the supporting rod 5 is fixedly connected with the back plate of the cabinet body 1, the front side above the supporting rod 5 is rotatably connected with the end part of the rotating plate 6, and a magnetic attraction device can be arranged at the front end of the supporting rod 5, when the rotating plate 6 rotates to a vertical state, the mounting plate 7 is attached to the front end of the supporting rod 5, the magnetic attraction device realizes the attraction on the mounting plate 7, the mounting plate 7 stops moving, the weight of the mounting plate 7 at the moment is directly transmitted to the supporting rod 5 through the rotating plate 6, when the mounting plate 7 is pulled forwards, the rotating plate 6 rotates, when the rotating plate 6 rotates to a horizontal state, the mounting plate 7 is positioned at the outer side of the cabinet body 1, the height of the mounting plate 7 is reduced, so that operation of an operator is facilitated, the lower surface of the rotating rod 23 at the moment is attached to the upper surface of the supporting rod 5, so that the rotating rod 23 can only rotate to be in a horizontal state, the mounting plate 7 is a porous plate, on one hand, the porous plate can facilitate fixing of electrical components on the mounting plate 7, and meanwhile, the porous plate can improve the heat dissipation efficiency of the mounting plate 7;
the heat dissipation mechanism 3 comprises sliding chutes 10 arranged at two sides of a back plate of the cabinet body 1, the sliding chutes 10 are slidably connected with a sliding seat 11, the cabinet body 1 is provided with a lifting assembly 9 for driving the sliding seat 11 to move, the sliding seat 11 is rotatably connected with a rotating rod 23, the end part of the rotating rod 23 is provided with a driving gear 19, the back plate of the cabinet body 1 is provided with a rack 20 matched with the driving gear 19, the sliding seat 11 is fixedly connected with two ends of a fixing plate 12, the fixing plate 12 is provided with a first ventilation assembly 24 synchronously rotatably connected with the rotating rod 23, the sliding seat 11 is provided with a second ventilation assembly 25 synchronously rotatable with the rotating rod 23, the airflow directions of the first ventilation assembly 24 and the second ventilation assembly 25 are mutually matched, for example, when the first ventilation assembly 24 blows air into the cabinet body 1, the second ventilation assembly 25 exhausts air to the outside, or vice versa, so that a smooth air duct is formed inside the cabinet body 1, the heat of the cabinet body 1 inside is taken away to the air current of being convenient for, has set up the spout 10 of orientation from top to bottom in the left and right sides of the cabinet body 1 backplate, and spout 10 sliding connection sliding seat 11's rear end, two sliding seat 11 fixed connection fixed plates 12's of the left and right sides both ends about to the middle part of sliding seat 11 rotates the both ends of connecting dwang 23.
In one aspect of the present embodiment, the first ventilation assembly 24 includes a first rotating shaft 22 rotatably connected to the fixing plate 12, a first cooling fan 13 is disposed at an end of the first rotating shaft 22 away from the center of the cabinet 1, a second bevel gear 14 is disposed at an end of the first rotating shaft 22 close to the center of the cabinet 1, the second bevel gear 14 is engaged with the first bevel gear 15, and the first bevel gear 15 is fixedly connected to the rotating rod 23. The rotating rod 23 drives the first rotating shaft 22 to rotate through the first bevel gear 15 and the second bevel gear 14 which are connected in a meshed mode, so that the first heat dissipation fan 13 rotates, the second ventilating assembly 25 comprises a second rotating shaft 17 which is connected with the sliding seat 11 in a rotating mode, a driven gear 18 which is connected with the driving gear 19 in a meshed mode is arranged on the second rotating shaft 17, and a second heat dissipation fan 16 is arranged at the end portion of the second rotating shaft 17. When the sliding seat 11 moves up and down, the driving gear 19 rotates due to the cooperation of the driving gear 19 and the rack 20, and the driving gear 19 drives the driven gear 18 to rotate, so that the second heat dissipation fan 16 rotates.
In one case of the embodiment, the lifting assembly 9 comprises a screw 21 rotatably connected to the cabinet 1, the screw 21 being screwed to the sliding seat 11. The screw rod 21 is also arranged in an up-and-down direction, and the screw rod 21 can drive the two sliding seats 11 at the two sides to synchronously move up and down when rotating. The lifting assembly 9 further comprises a driving motor 32 arranged on the cabinet body 1, an output shaft of the driving motor 32 is fixedly connected with a third bevel gear 31, two sides of the third bevel gear 31 are meshed and connected with a fourth bevel gear 30, the fourth bevel gear 30 is fixedly connected with one end of a third rotating shaft 28, the other end of the third rotating shaft 28 is fixedly connected with a fifth bevel gear 27, the fifth bevel gear 27 is meshed and connected with a sixth bevel gear 26, and the sixth bevel gear 26 is fixedly connected with a screw rod 21. The driving motor 32 drives the third rotating shafts 28 on two sides to rotate through the third bevel gear 31 and the fourth bevel gear 30 which are connected in a meshed manner, the third rotating shafts 28 drive the screw rods 21 to rotate through the fifth bevel gear 27 and the sixth bevel gear 26 which are connected in a meshed manner, and the bearing seat 29 is arranged at the bottom of the cabinet body 1 and is connected with the third rotating shafts 28 in a rotating manner, so that the third rotating shafts 28 are more stable in rotation.
In the implementation process of the present embodiment, the cabinet door 2 is opened, the mounting plate 7 is pulled out to the front side, at this time, the rotating plate 6 rotates to the front side, the mounting plate 7 is pulled out, and the height of the mounting plate 7 is also reduced, at this time, the electrical components to be used can be mounted on the mounting plate 7, and after the mounting is completed, the mounting plate 7 is pushed to the rear side, so that the mounting plate 7 is placed in the cabinet body 1, and the mounting plate 7 can also block the heat dissipation mechanism 3 at the rear side.
The driving motor 32 is started, the third bevel gear 31 and the fourth bevel gear 30 which are connected through meshing are driven by the output shaft of the driving motor 32 to rotate the third rotating shaft 28, the fifth bevel gear 27 and the sixth bevel gear 26 which are connected through meshing are driven by the third rotating shaft 28 to rotate the screw rod 21, so that the sliding seat 11 moves up and down, the driving gear 19 is meshed with the rack 20 at the moment and is connected with the rack 20, so that the driving gear 19 drives the rotating rod 23 to rotate, the rotating rod 23 drives the first heat dissipation fan 13 and the second heat dissipation fan 16 to rotate, thereby the air flow in the fixed direction is formed inside the cabinet body 1, the heat generated during the working of the electrical elements is taken away by the air flow, the first ventilation assembly 24 and the second ventilation assembly 25 move up and down, and the heat dissipation inside the cabinet body 1 is more uniform.
The weak current control device based on the Internet of things is suitable for the weak current control device based on the Internet of things, the first ventilation assembly 24 and the second ventilation assembly 25 are driven to move up and down through the lifting assembly 9, heat dissipation is achieved, the heat dissipation condition of the inside of the whole cabinet body 1 is good, and the mounting plate 7 can extend out of the cabinet body 1, so that the installation of electrical components is more convenient.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A weak current control device based on the Internet of things comprises a cabinet body, wherein an opening of the cabinet body is rotatably connected with a cabinet door, and the weak current control device is characterized by further comprising a heat dissipation mechanism and an installation mechanism;
the mounting mechanism comprises a supporting rod fixedly connected with the back plate of the cabinet body, one side of the supporting rod, which is far away from the ground, is rotatably connected with one end of the rotating plate, and the other end of the rotating plate is rotatably connected with the mounting plate;
the heat dissipation mechanism comprises sliding grooves arranged on two sides of a backboard of a cabinet body, sliding grooves are connected with sliding seats in a sliding mode, a lifting assembly for driving the sliding seats to move is arranged on the cabinet body, the sliding seats are connected with a rotating rod in a rotating mode, a driving gear is arranged at the end of the rotating rod, a rack matched with the driving gear is arranged on the backboard of the cabinet body, two ends of a fixed plate fixedly connected with the sliding seats are provided with first ventilation assemblies connected with the rotating rod in a rotating mode, and second ventilation assemblies rotating with the rotating rod in a rotating mode are arranged on the sliding seats.
2. The Internet of things-based weak current control device as claimed in claim 1, wherein the side wall and the back plate of the cabinet body are provided with air holes.
3. The internet of things-based weak current control device as claimed in claim 1, wherein the mounting plate is a perforated plate.
4. The internet of things-based weak current control device as claimed in claim 1, wherein the airflow directions of the first ventilation assembly and the second ventilation assembly are matched with each other.
5. The Internet of things-based weak current control device is characterized in that the first ventilation assembly comprises a first rotating shaft in rotating connection with the fixing plate, a first heat dissipation fan is arranged at one end, away from the center of the cabinet body, of the first rotating shaft, a second bevel gear is arranged at one end, close to the center of the cabinet body, of the first rotating shaft, the second bevel gear is in meshed connection with the first bevel gear, and the first bevel gear is fixedly connected with the rotating rod.
6. The Internet of things-based weak current control device is characterized in that the second ventilation assembly comprises a second rotating shaft which is rotatably connected with the sliding seat, a driven gear which is in meshed connection with the driving gear is arranged on the second rotating shaft, and a second heat dissipation fan is arranged at the end of the second rotating shaft.
7. The Internet of things-based weak current control device as claimed in claim 1, wherein the lifting assembly comprises a lead screw rotatably connected with the cabinet body, and the lead screw is in threaded connection with the sliding seat.
8. The Internet of things-based weak current control device is characterized in that the lifting assembly further comprises a driving motor arranged on the cabinet body, an output shaft of the driving motor is fixedly connected with a third bevel gear, two sides of the third bevel gear are meshed with fourth bevel gears, the fourth bevel gears are fixedly connected with one end of a third rotating shaft, the other end of the third rotating shaft is fixedly connected with a fifth bevel gear, the fifth bevel gears are meshed with sixth bevel gears, and the sixth bevel gears are fixedly connected with a screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210502972.5A CN114710918B (en) | 2022-05-09 | 2022-05-09 | Weak current control device based on Internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210502972.5A CN114710918B (en) | 2022-05-09 | 2022-05-09 | Weak current control device based on Internet of things |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114710918A true CN114710918A (en) | 2022-07-05 |
| CN114710918B CN114710918B (en) | 2024-01-16 |
Family
ID=82177183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210502972.5A Active CN114710918B (en) | 2022-05-09 | 2022-05-09 | Weak current control device based on Internet of things |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114710918B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116247543A (en) * | 2023-03-08 | 2023-06-09 | 董健 | Intelligent control electric cabinet for weak current of building engineering |
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| CN215681346U (en) * | 2021-08-21 | 2022-01-28 | 汇海电工有限公司 | Outdoor looped netowrk cabinet with aeration cooling function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116247543A (en) * | 2023-03-08 | 2023-06-09 | 董健 | Intelligent control electric cabinet for weak current of building engineering |
| CN116247543B (en) * | 2023-03-08 | 2024-02-27 | 董健 | Weak current control electric cabinet for building engineering |
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| Publication number | Publication date |
|---|---|
| CN114710918B (en) | 2024-01-16 |
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