CN116799582A - Ultra-large caliber space division type conductive slip ring device - Google Patents
Ultra-large caliber space division type conductive slip ring device Download PDFInfo
- Publication number
- CN116799582A CN116799582A CN202310886567.2A CN202310886567A CN116799582A CN 116799582 A CN116799582 A CN 116799582A CN 202310886567 A CN202310886567 A CN 202310886567A CN 116799582 A CN116799582 A CN 116799582A
- Authority
- CN
- China
- Prior art keywords
- slip ring
- conductive slip
- brush
- ultra
- positioning plate
- 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.)
- Pending
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052802 copper Inorganic materials 0.000 claims abstract description 40
- 239000010949 copper Substances 0.000 claims abstract description 40
- 238000003466 welding Methods 0.000 claims abstract description 36
- 229910001369 Brass Inorganic materials 0.000 claims description 12
- 239000010951 brass Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 229910000510 noble metal Inorganic materials 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000009713 electroplating Methods 0.000 abstract description 3
- 239000010970 precious metal Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 239000004484 Briquette Substances 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/08—Slip-rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/38—Brush holders
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
The invention discloses an ultra-large caliber space division type conductive slip ring device, which belongs to the technical field of conductive slip rings and comprises a conductive slip ring body arranged on a base, wherein the conductive slip ring body comprises a ring body assembly and an electric brush assembly, the ring body assembly comprises an insulating cylinder, a copper strip, a pressing block and a screw, the copper strip is wound on the insulating cylinder, and the pressing block is arranged on the insulating cylinder and is pressed by the screw; the electric brush assembly comprises an electric brush bracket, a positioning plate and brush filament bundles arranged on two sides of the positioning plate, one side of the brush filament bundles penetrate through the electric brush bracket and are locked by nuts, the nuts are abutted to the positioning plate, and welding pipes are placed on the positioning plate. The ultra-large caliber space-division conductive slip ring device adopting the structure can meet the requirements of ultra-large diameter and precious metal layer electroplating, has good electrical contact performance, and can meet the requirements of high reliability and long-time work of the conductive slip ring.
Description
Technical Field
The invention relates to the technical field of conductive slip rings, in particular to an ultra-large caliber space division type conductive slip ring device.
Background
The aerospace-level conductive slip ring is a precise rotation transmission device formed by axially superposing a multi-loop sliding friction pair structure consisting of a rotating end (ring body assembly) and a fixed end (electric brush assembly), can realize power and signal transmission between two relative 360-degree unrestricted free rotation devices, and is mainly applied to a system needing signal rotation electric transmission in the fields of aviation and aerospace.
As a space movable part needing long-term on-orbit operation, the reliability and the service life of the space movable part relate to the success and failure of on-orbit flight tasks of aircrafts, and the space movable part is one of a few single-point failure devices on various aircrafts, and once the space movable part fails, energy loss is often caused, and even catastrophic accidents can occur.
The traditional slip ring adopts the technology that a carbon brush abuts against a copper ring. The transmission is generally limited to the transmission of large current, and a large amount of carbon alloy powder is generated due to friction during the transmission process, so that the carbon brush needs to be cleaned or replaced regularly. However, since the outer space is in a vacuum and weightless state, carbon powder is generated when the carbon brush runs, and after the carbon brush is worn to a certain extent, if the inter-loop sealing is poor, short circuit may be caused. Although usable aerospace-grade conductive slip rings exist in the prior art, high-end fields such as aerospace and the like are required to be stable in performance, long in service life, free of maintenance, high in rotating speed and small in structural size, and special requirements of equipment in different application fields are fully met.
Based on the above, an ultra-large caliber space division type conductive slip ring device is provided.
Disclosure of Invention
The invention aims to provide an ultra-large caliber space-division conductive slip ring device, which is characterized in that a ring body component part is manufactured by means of copper strips processed by copper foils with the thickness lower than 1mm, and the ring body component part and a brush component structure formed by brush tows are in sliding friction to realize a rotation transmission function, and the device has the advantages of ultra-large transmission diameter exceeding 2.4m, high transmission reliability, low friction moment, low transmission signal noise and the like, and the ring body component of the conductive slip ring can meet the requirements of ultra-large diameter and precious metal layer electroplating, has good electrical contact performance, and can meet the requirements of high reliability and long-time work of the conductive slip ring.
In order to achieve the above purpose, the invention provides an ultra-large caliber aerospace split conductive slip ring device, which comprises a conductive slip ring body arranged on a base, wherein the conductive slip ring body comprises a ring body assembly and an electric brush assembly, the ring body assembly comprises an insulating cylinder, a copper strip, a pressing block and a screw, the copper strip is wound on the insulating cylinder, and the pressing block is arranged on the insulating cylinder and is pressed by the screw; the electric brush assembly comprises an electric brush bracket, a positioning plate and brush filament bundles arranged on two sides of the positioning plate, one side of the brush filament bundles penetrate through the electric brush bracket and are locked by nuts, the nuts are abutted to the positioning plate, and welding pipes are placed on the positioning plate.
Preferably, the insulating cylinder is made of carbon fiber and glass fiber composite materials, an inner layer structure of the insulating cylinder is composed of an upper flange flanging, a lower flange flanging, an outer circular wall, an inner reinforcing vertical rib and splicing blocks, annular grooves are formed in the side face of a cylinder of the insulating cylinder, the number of the annular grooves is 30, the width of the annular grooves is 3mm, the depth of the annular grooves is 5mm, and the interval between the annular grooves is 2mm.
Preferably, the copper strip is a red copper strip with the width of 3mm, the thickness of 0.5mm and the length of 1.5mm, and the surface of the copper strip is electroplated with noble metal; the material of the pressing block is brass, the pressing block is matched with the connecting block, two threaded holes are formed in the edge of the pressing block, welding holes are formed between the two threaded holes, the outer edge of the pressing block is arc-shaped, and the size of the outer edge of the pressing block is the same as the diameter of the insulating cylinder; the screw is an inner hexagon screw, and the screw connects the pressing block with the connecting block.
Preferably, the brush holder is made of aluminum alloy, the brush holder comprises a fixing plate and a base, the base is arranged on one side of the fixing plate, brush filament bundle mounting holes are formed in the side wall of the fixing plate, the brush filament bundle mounting holes are matched with the annular groove in distance, the distance between every two brush filament bundle mounting holes is 10mm, and locating plate mounting holes are formed in the bottom plate of the fixing plate.
Preferably, the locating plate is made of nonmetallic materials, a plurality of welding pipe placing holes and a plurality of wire passing grooves are formed in the locating plate, the distance between each welding pipe placing hole and each wire passing groove is 10mm, the depth of each welding pipe placing hole is 5mm, and the diameter of each welding pipe placing hole is 3mm.
Preferably, the brush silk bundle comprises 10 noble metal brush silk, the length of brush silk is 150mm, brush silk welding is in the copper pipe, and welding length is 20mm, the material of copper pipe is brass, brass's front end is provided with diameter 1mm, deep 20 mm's blind hole, brush silk welding is in the blind hole, copper pipe's rear end is provided with the external screw thread, the external screw thread with nut looks adaptation, the top of external screw thread is provided with insulating cover.
Preferably, the welding pipe is made of brass, and two through holes are formed in two sides of the welding pipe.
Therefore, the ultra-large caliber space-division conductive slip ring device provided by the invention has the advantages that the ring body component of the conductive slip ring can meet the requirements of ultra-large diameter and precious metal layer electroplating, has good electrical contact performance, and can meet the requirements of high reliability and long-time work of the conductive slip ring, and the rotating transmission function is realized by virtue of sliding friction of a brush component structure formed by brush tows, wherein the ultra-large transmission diameter exceeds 2.4m, the transmission reliability is high, the friction torque is low, the transmission signal noise is low, and the like.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the ring assembly according to an embodiment of the present invention;
FIG. 3 is a schematic view of an insulation cylinder according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a briquette structure according to an embodiment of the invention;
FIG. 5 is a schematic diagram II of a briquette structure according to an embodiment of the invention;
FIG. 6 is a schematic view of a brush assembly according to an embodiment of the present invention;
FIG. 7 is a second schematic view of a brush assembly according to an embodiment of the present invention;
FIG. 8 is a schematic view of a brush-holder structure according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a positioning plate structure according to an embodiment of the present invention;
FIG. 10 is a schematic view of a brush tow structure according to an embodiment of the present invention;
FIG. 11 is a schematic view of a welded pipe structure according to an embodiment of the present invention;
FIG. 12 is a schematic view of a copper tube structure according to an embodiment of the present invention;
reference numerals:
1. a ring assembly; 11. an insulating cylinder; 111. the upper flange and the lower flange are turned; 112. an outer circumferential wall; 113. internal reinforcing vertical ribs; 114. splicing blocks; 12. copper strips; 13. briquetting; 131. a threaded hole; 132. welding holes; 14. a screw; 2. a brush assembly; 21. a brush holder; 211. a base; 212. a fixing plate; 213. brushing a silk bundle mounting hole; 214. positioning plate mounting holes; 22. a positioning plate; 221. welding a pipe placing hole; 222. wire releasing grooves; 23. brushing the filament bundles; 24. a screw cap; 25. copper pipe; 251. a blind hole; 252. an external thread; 26. welding the pipe; 261. a through hole; 27. a silicone rubber; 28. an insulating sleeve.
Detailed Description
The technical scheme of the invention is further described below through the attached drawings and the embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
Examples
As shown in fig. 1-12, the invention provides an ultra-large caliber space split type conductive slip ring device, which comprises a conductive slip ring body arranged on a base, wherein the conductive slip ring body comprises a ring body assembly 1 and a brush assembly 2, the ring body assembly 1 comprises an insulating cylinder 11, a copper strip 12, a pressing block 13 and a screw 14, the copper strip 12 is wound on the insulating cylinder 11, the insulating cylinder 11 is made of carbon fiber and glass fiber composite materials, an inner layer is of a typical carbon fiber composite material cylinder structure, the inner layer structure of the insulating cylinder 11 is composed of an upper flange flanging 111, a lower flange flanging 111, an outer circular wall 112, an inner reinforcing vertical rib 113 and a splicing block 114, and an outer layer is formed by integrally forming a glass fiber composite material layer and the inner layer, so that insulation between a loop and a matrix is realized. The cylindrical side of the insulating cylinder 11 is provided with annular grooves, the number of the annular grooves is 30, the width of the annular grooves is 3mm, the depth of the annular grooves is 5mm, the interval between each annular groove is 2mm, the coaxiality and the circle run-out are controlled within 1mm, and the annular grooves are used for winding copper strips.
Copper strip 12 is a red copper strip with a width of 3mm, a thickness of 0.5mm and a length of 1.5mm, and the surface of copper strip 12 is electroplated with noble metal. The pressing block 13 is arranged on the insulating cylinder 11 and is pressed by a screw 14; the material of briquetting 13 is brass, and briquetting 13 and connecting block 114's recess looks adaptation, and the edge of briquetting 13 is provided with two screw holes 131, is provided with welding hole 132 between two screw holes, and the outward flange of briquetting 13 is the arc, and its size is the same with the diameter of insulating cylinder 11. Screw 14 is a M2 x 5 socket head cap screw, and screw 14 connects press block 13 with connection block 114, thereby compressing the copper strip.
The ring body assembly 1 is formed in the following manner:
1. firstly, winding a copper strip 12 in an annular groove of an insulating cylinder 11 by using AB glue, wherein the copper strip 12 is divided into six sections altogether, the joint position is placed in a splicing block 114, the surface of the wound copper strip 12 is kept smooth in the winding process, no folds exist, and glue solution is not allowed to remain on the outer surface of the copper strip 12;
2. then installing the pressing block 13 into the splicing block, compressing the copper strip 12, and pre-tightening by adopting the screw 14, wherein the position of the pressing block 13 is carefully regulated in the process so that the outer surface of the pressing block 13 is flush with the surface of the copper strip 12;
3. after the 6 pressing blocks 13 are installed, the 1 st pressing block and the 3 rd pressing block 13 need to be welded to lead out wires, and the rest pressing blocks 13 are connected in series.
The brush assembly 2 comprises a brush holder 21, a positioning plate 22 and brush filament bundles 23 arranged on two sides of the positioning plate 22, wherein the brush filament bundles 23 on one side penetrate through the brush holder 21 and are locked by nuts 24, the nuts 24 are abutted on the positioning plate 22, and a welding pipe 26 is arranged on the positioning plate 22.
The brush holder 21 is made of aluminum alloy, the brush holder 21 comprises a fixing plate 212 and a base 211, the base 211 is arranged on one side of the fixing plate 212, brush filament bundle mounting holes 213 are formed in the side wall of the fixing plate 212, the brush filament bundle mounting holes 213 are matched with the annular groove in distance, the distance between each brush filament bundle mounting hole 213 is 10mm, and locating plate mounting holes 214 are formed in the bottom plate of the fixing plate 212.
The positioning plate 22 is made of a nonmetallic material, a plurality of welding pipe placing holes 221 and a plurality of wire passing grooves 222 are formed in the positioning plate 22, the distance between each welding pipe placing hole 221 and each wire passing groove 222 is 10mm, the depth of each welding pipe placing hole 221 is 5mm, and the diameter of each welding pipe placing hole is 3mm. The brush filament bundle 23 is composed of 10 noble metal brush filaments, the length of the brush filaments is 150mm, the brush filaments are welded in the copper tube 25, and the welding length is 20mm. The copper pipe 25 is made of brass, a blind hole 251 with the diameter of 1mm and the depth of 20mm is formed in the front end of the brass, brush wires are welded in the blind hole 251, an external thread 252 is formed in the rear end of the copper pipe 25, and the external thread 252 is matched with the nut 24 and used for locking when the brush wire bundle 23 is installed. The top end of the external thread 252 is provided with an insulating sleeve 28.
The welding pipe 26 is made of brass, two through holes 261 are formed in two sides of the welding pipe 26 and used for perforation welding of wires on two sides, and after the wires are welded, the welding points and the wires are fixed by adopting silicone rubber 27.
The realization mode of the rotation transmission function of the conductive slip ring is as follows;
the ring body assembly 1 is adopted as a rotating body, the electric brush assembly 2 is adopted as a stationary body, and the follow-up shafting drives the conductive ring body to rotate, so that signal transmission between the electric brush assembly 2 and the ring body assembly 1 is realized. Uniformly distributing 8 electric brush assemblies 2 on the circumference, wherein 1-3-5-7 are electric brushes of the same loop with odd numbers according to the sequence; 2-4-6-8 are brushes with even numbers and same loop, and the brushes with the same loop are connected in parallel through cables. The copper strips 12 of the ring body assembly 1 are equally divided into 6 sections, and the joints are crimped by pressing blocks 13 and are also connected in parallel through cables. Through the cooperation of respective parallel networks and 6 pairs 8', even if individual contacts or brushes fail, signals can be effectively transmitted when the electric brushes rotate to any angle, and meanwhile, the stability of circuit contact resistance is guaranteed by the parallel circuit structure.
Therefore, the ultra-large caliber space split conductive slip ring device provided by the invention has the advantages that the ring body component part is manufactured by means of copper strips processed by copper foils with the thickness lower than 1mm, the sliding friction of the ring body component part and the brush component structure formed by brush tows is used for realizing the rotation transmission function, the ultra-large transmission diameter exceeds 2.4m, the transmission is high in reliability, the friction torque is low, the transmission signal noise is low, and the like, and the ultra-large caliber space split conductive slip ring device is especially suitable for the matching requirements of various ultra-large caliber test equipment and space ultra-large caliber telescopes in China.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (7)
1. An ultra-large caliber space division type conductive slip ring device is characterized in that:
the electric conduction slip ring comprises a conductive slip ring body arranged on a base, wherein the conductive slip ring body comprises a ring body assembly and an electric brush assembly, the ring body assembly comprises an insulating cylinder, a copper strip, a pressing block and a screw, the copper strip is wound on the insulating cylinder, and the pressing block is arranged on the insulating cylinder and is pressed by the screw; the electric brush assembly comprises an electric brush bracket, a positioning plate and brush filament bundles arranged on two sides of the positioning plate, one side of the brush filament bundles penetrate through the electric brush bracket and are locked by nuts, the nuts are abutted to the positioning plate, and welding pipes are placed on the positioning plate.
2. The ultra-large caliber aerospace component conductive slip ring device according to claim 1, wherein: the insulating cylinder is made of carbon fiber and glass fiber composite materials, an inner layer structure of the insulating cylinder is composed of an upper flange, a lower flange, an outer circular wall, an inner reinforcing vertical rib and splicing blocks, annular grooves are formed in the side face of a cylinder of the insulating cylinder, the number of the annular grooves is 30, the width of the annular grooves is 3mm, the depth of the annular grooves is 5mm, and the interval between the annular grooves is 2mm.
3. The ultra-large caliber aerospace component conductive slip ring device according to claim 2, wherein: the copper strip is a red copper strip with the width of 3mm, the thickness of 0.5mm and the length of 1.5mm, and noble metals are electroplated on the surface of the copper strip; the material of the pressing block is brass, the pressing block is matched with the connecting block, two threaded holes are formed in the edge of the pressing block, welding holes are formed between the two threaded holes, the outer edge of the pressing block is arc-shaped, and the size of the outer edge of the pressing block is the same as the diameter of the insulating cylinder; the screw is an inner hexagon screw, and the screw connects the pressing block with the connecting block.
4. The ultra-large caliber aerospace component conductive slip ring device according to claim 3, wherein: the brush support is made of aluminum alloy, the brush support comprises a fixing plate and a base, the base is arranged on one side of the fixing plate, brush filament bundle mounting holes are formed in the side wall of the fixing plate, the brush filament bundle mounting holes are matched with the annular groove in distance, and positioning plate mounting holes are formed in the bottom plate of the fixing plate.
5. The ultra-large caliber aerospace component conductive slip ring device according to claim 4, wherein: the positioning plate is made of nonmetallic materials, a plurality of welding pipe placing holes and a plurality of wire passing grooves are formed in the positioning plate, the distance between each welding pipe placing hole and each wire passing groove is 10mm, the depth of each welding pipe placing hole is 5mm, and the diameter of each welding pipe placing hole is 3mm.
6. The ultra-large caliber aerospace component conductive slip ring device according to claim 5, wherein: the brush silk bundle comprises 10 noble metal brush silk, the length of brush silk is 150mm, brush silk welding is in the copper pipe, the material of copper pipe is brass, the front end of brass is provided with diameter 1mm, dark 20 mm's blind hole, brush silk welding is in the blind hole, the rear end of copper pipe is provided with the external screw thread, the external screw thread with nut looks adaptation, the top of external screw thread is provided with insulating cover.
7. The ultra-large caliber aerospace component conductive slip ring device according to claim 6, wherein: the welding pipe is made of brass, and two through holes are formed in two sides of the welding pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310886567.2A CN116799582A (en) | 2023-07-19 | 2023-07-19 | Ultra-large caliber space division type conductive slip ring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310886567.2A CN116799582A (en) | 2023-07-19 | 2023-07-19 | Ultra-large caliber space division type conductive slip ring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116799582A true CN116799582A (en) | 2023-09-22 |
Family
ID=88043737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310886567.2A Pending CN116799582A (en) | 2023-07-19 | 2023-07-19 | Ultra-large caliber space division type conductive slip ring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116799582A (en) |
-
2023
- 2023-07-19 CN CN202310886567.2A patent/CN116799582A/en active Pending
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