CN217250843U - Vibrating sweeper for overhead line insulator - Google Patents

Vibrating sweeper for overhead line insulator Download PDF

Info

Publication number
CN217250843U
CN217250843U CN202220364148.3U CN202220364148U CN217250843U CN 217250843 U CN217250843 U CN 217250843U CN 202220364148 U CN202220364148 U CN 202220364148U CN 217250843 U CN217250843 U CN 217250843U
Authority
CN
China
Prior art keywords
cleaning brush
rod
notch
brush head
insulator
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.)
Active
Application number
CN202220364148.3U
Other languages
Chinese (zh)
Inventor
刘伟
毛云彪
许晓峰
金良勇
姜小军
段盛福
徐蒸政
邱智予
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangshan Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
Jiangshan Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangshan Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical Jiangshan Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority to CN202220364148.3U priority Critical patent/CN217250843U/en
Application granted granted Critical
Publication of CN217250843U publication Critical patent/CN217250843U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Insulators (AREA)

Abstract

The utility model discloses a vibrating type sweeper for insulators of an overhead line, which aims to provide a vibrating type sweeper which is convenient for sweeping the insulators on the overhead line and can improve the sweeping efficiency and effect of the insulators; and the vibration type cleaner for the overhead line insulator can perform live working and clean the insulator on the overhead line. The cleaning brush comprises an insulating operating rod, a cleaning brush head and a vibrator, wherein the cleaning brush head is arranged at the upper end of the insulating operating rod, a cleaning brush groove for accommodating an insulator is formed in the cleaning brush head, the cleaning brush groove penetrates through the cleaning brush head, openings are formed in two ends of the cleaning brush groove, and a plurality of bristles are arranged on two opposite inner side walls of the cleaning brush groove; the vibrator is arranged on the cleaning brush head and used for enabling the cleaning brush head to vibrate.

Description

Vibrating sweeper for overhead line insulator
Technical Field
The utility model relates to an insulator cleaning device, concretely relates to vibrating sweeper that overhead line insulator was used.
Background
At present, the work of cleaning insulators of overhead lines mainly depends on dry cleaning cloth to manually clean the insulators, and the insulators need to be cleaned when the lines are powered off (the insulators are mainly cleaned when the lines are powered off). The dry rag is adopted to wipe the insulator, so that the operation is inconvenient, the efficiency is low, and the cleaning effect is not good; and the cleaning is needed when the line is in power failure, so that the problem that the cleaning of the insulators is inconvenient exists, for example, the insulator pollution phenomenon discovered during line inspection can not be cleaned in time at ordinary times.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cleaning device which is convenient for cleaning the insulator on the overhead line and can improve the cleaning efficiency and effect of the insulator; and the vibration type cleaner for the overhead line insulator can perform live working and clean the insulator on the overhead line.
The technical scheme of the utility model is that:
a vibrating type sweeper for an overhead line insulator comprises an insulating operating rod, a cleaning brush head and a vibrator, wherein the cleaning brush head is arranged at the upper end of the insulating operating rod, a cleaning brush groove used for accommodating the insulator is formed in the cleaning brush head, the cleaning brush groove penetrates through the cleaning brush head, openings are formed in two ends of the cleaning brush groove, and a plurality of bristles are arranged on two opposite inner side walls of the cleaning brush groove; the vibrator is arranged on the cleaning brush head and used for enabling the cleaning brush head to vibrate. The vibrating type sweeper for the overhead line insulator is used specifically as follows, an operator starts the vibrator and then holds the insulating operating rod by hand to lift the sweeping brush head; next, enabling the cleaning brush groove to be close to the insulator, enabling the insulator to enter the cleaning brush groove, and enabling the brush bristles to be distributed on the periphery of the insulator and to be in contact with the insulator; then, an operator moves the cleaning brush head slowly along the axial direction of the insulator through the insulating operating rod, in the process, the vibrator drives the bristles of the cleaning brush head to vibrate, the insulator is cleaned through the vibration of the bristles, and meanwhile, the cleaning brush head moves slowly along the axial direction of the insulator, so that all parts of the insulator are cleaned; the insulator cleaning device can improve the cleaning efficiency and effect of the insulator, and can be used for cleaning the insulator on the overhead line in a live-line mode.
Preferably, the cleaning brush head is fixed to the upper end of the insulated operating rod.
As another preferred mode, the cleaning brush head is rotatably arranged at the upper end of the insulating operating rod through a rotating shaft. So, can adjust the angle of cleaning the brush head as required to the angle of cleaning the brush groove is adjusted, so that during the operation, make the entering that the insulator can be more convenient clean in the brush groove.
The cleaning brush head is provided with a screw rod, the screw rod is provided with a locking nut, the upper end part of the insulating operating rod is provided with a connecting through hole, the screw rod penetrates through the connecting through hole, the cleaning brush head is locked and fixed at the upper end of the insulating operating rod through the locking nut, and the screw rod forms the rotating shaft. Therefore, the angle of the cleaning brush head can be adjusted by loosening the locking nut; after the angle of the cleaning brush head is adjusted, the cleaning brush head can be locked and fixed on the insulating operating rod by screwing the locking nut.
The rotating shaft is parallel to the groove depth direction of the cleaning brush groove.
Preferably, the vibrating type sweeper for the overhead line insulator further comprises a notch cover plate and a cover plate self-triggering closing device, wherein the notch cover plate is used for sealing and covering a notch of the sweeping brush groove, one side of the notch cover plate is rotatably arranged on the sweeping brush head through a shaft rod, a torsion spring is arranged on the shaft rod and used for driving the notch cover plate to rotate around the shaft rod and sealing and covering the notch of the sweeping brush groove, a limiting ring is arranged on one surface of the notch cover plate, and a plurality of bristles are arranged on the other surface of the notch cover plate; the cover plate self-triggering closing device comprises a trigger rod, a guide hole, a guide rod, a linkage rod and a connecting rod, wherein the trigger rod is positioned in a cleaning brush groove, the guide hole is formed in the cleaning brush head, the guide rod slides along the guide hole, the linkage rod is positioned outside the cleaning brush head and is parallel to the guide rod, the connecting rod is used for connecting the guide rod and the linkage rod, the sliding direction of the guide rod is parallel to the groove depth direction of the cleaning brush groove, and one end of the guide rod is connected with the trigger rod. When the linkage rod is inserted into the limiting ring, the notch of the cleaning brush groove is in an opening state, and the insulator can enter the cleaning brush groove from the notch of the cleaning brush groove; when the linkage rod is separated from the limiting ring, the notch cover plate rotates around the shaft rod under the action of the torsion spring and seals and covers the notch of the cleaning brush groove, and the bristles on the other plate surface of the notch cover plate extend into the cleaning brush groove.
This scheme structure can improve the effect of cleaning to the insulator under the condition of the operating procedure when not increasing the vibrating sweeper that overhead line insulator was used and cleaning the insulator, and is specific, when the vibrating sweeper that overhead line insulator was used, got into at the insulator and cleaned the in-process in brush inslot, behind insulator and trigger bar, the insulator will promote the trigger bar and toward the tank bottom direction removal that cleans the brush groove to drive the gangbar through the connecting rod and together remove, so that gangbar and spacing ring separation. When the linkage rod is separated from the limiting ring, the insulator is completely accommodated in the cleaning brush groove, the notch cover plate rotates around the shaft under the action of the torsion spring and covers the notch of the cleaning brush groove in a sealing mode, and bristles of the notch cover plate extend into the cleaning brush groove and are in contact with the insulator; therefore, the brush hair on the notch cover plate can be matched with the brush hair on the groove wall of the cleaning brush groove to clean the insulator so as to improve the cleaning effect; meanwhile, the operation steps of the vibration type cleaner for the overhead line insulator in cleaning the insulator cannot be increased.
Preferably, the trigger lever is parallel to the longitudinal direction of the cleaning brush groove. So, at the in-process that the insulator got into and cleans the brush inslot, after insulator and trigger bar, be favorable to the insulator to promote the trigger bar and move toward the tank bottom direction that cleans the brush groove.
Preferably, the shaft is parallel to the longitudinal direction of the cleaning brush groove.
Preferably, the notch cover plate is further provided with a magnet, the cleaning brush head is also provided with a magnet, and after the notch cover plate rotates around the shaft under the action of the torsion spring and seals and covers the notch of the cleaning brush groove, the magnet on the notch cover plate and the magnet on the cleaning brush head attract each other. Therefore, after the notch cover plate seals and covers the notch of the cleaning brush groove, the magnet on the notch cover plate and the magnet on the cleaning brush head are mutually attracted so as to ensure that the notch cover plate is in a state of sealing and covering the notch of the cleaning brush groove.
Preferably, the bottom wall of the notch of the cleaning brush groove facing the cleaning brush groove is also provided with a plurality of bristles. Therefore, the cleaning effect of the insulator is improved.
Preferably, the lower end of the insulated operating rod is provided with a rubber holding part.
Preferably, the vibrator is a high frequency vibrator. The high-frequency vibrator can drive the bristles of the cleaning brush head to vibrate at high frequency in the working process so as to improve the cleaning effect on the insulator.
The utility model has the advantages that: the insulator cleaning device is convenient for cleaning the insulator on the overhead line, and can improve the cleaning efficiency and effect of the insulator; moreover, live working can be carried out to clean the insulator on the overhead line.
Drawings
Fig. 1 is a schematic structural view of a vibration sweeper for an overhead line insulator according to the present invention.
Fig. 2 is a partial structure diagram in the direction a in fig. 1.
In the figure:
the device comprises an insulating operating rod 1, a rubber holding part 1.1 and a connecting through hole 1.2;
a cleaning brush head 2 and a cleaning brush groove 2.1;
a vibrator 3;
bristles 4;
a screw 5;
a lock nut 6;
the device comprises a notch cover plate 7, a shaft lever 7.1 and a limiting ring 7.2;
the cover plate self-triggering closing device 8, the triggering rod 8.1, the guide rod 8.2, the linkage rod 8.3 and the connecting rod 8.4;
and a magnet 9.
Detailed Description
The first embodiment is as follows: as shown in fig. 1 and 2, a vibration type cleaner for an overhead line insulator includes an insulating operation rod 1, a cleaning head 2, and a vibrator 3. The cleaning brush head is arranged at the upper end of the insulated operating rod. The cleaning brush head is provided with a cleaning brush groove 2.1 for accommodating the insulator, the cleaning brush groove penetrates through the cleaning brush head, and openings are formed in two ends of the cleaning brush groove. Clean all to be equipped with a plurality of brush hairs 4 on two relative inside walls in brush groove, clean on the brush groove promptly and all be equipped with a plurality of brush hairs on two inside walls adjacent with the notch in brush groove. The vibrator is arranged on the cleaning brush head and used for enabling the cleaning brush head to vibrate. In this embodiment, the vibrator is a high frequency vibrator. The high-frequency vibrator can drive the bristles of the cleaning brush head to vibrate at high frequency in the working process.
The vibrating type sweeper for the overhead line insulator is used specifically, an operator starts the vibrator and then holds the insulating operating rod by hand to lift the sweeping brush head; next, enabling the cleaning brush groove to be close to the insulator, enabling the insulator to enter the cleaning brush groove, and enabling the brush bristles to be distributed on the periphery of the insulator and to be in contact with the insulator; then, an operator moves the cleaning brush head slowly along the axial direction of the insulator through the insulating operating rod, in the process, the vibrator drives the bristles of the cleaning brush head to vibrate, the insulator is cleaned through the vibration of the bristles, and meanwhile, the cleaning brush head moves slowly along the axial direction of the insulator, so that all parts of the insulator are cleaned; the insulator cleaning device can improve the cleaning efficiency and effect of the insulator, and can be used for cleaning the insulator on the overhead line in a live-line mode. Of course, the vibrator may be turned on after the insulator enters the cleaning brush groove.
Specifically, as shown in fig. 1, the lower end of the insulated operating rod is provided with a rubber grip 1.1. And a vibrator switch is arranged on the rubber holding part or on the insulating operating rod close to the rubber holding part and is used for controlling the opening and closing of the vibrator.
In one embodiment of this embodiment, the cleaning brush head is fixed to the upper end of the insulated operating rod.
In another embodiment of this embodiment, as shown in fig. 1, the cleaning brush head is rotatably disposed at the upper end of the insulated operating rod through a rotating shaft. Specifically, a screw rod 5 is arranged on the cleaning brush head, and a locking nut 6 is arranged on the screw rod; the upper end part of the insulating operating rod is provided with a connecting through hole 1.2; the screw rod passes through the connecting through hole, the cleaning brush head is locked and fixed at the upper end of the insulating operating rod through the locking nut, and the screw rod forms the rotating shaft. The rotating shaft is parallel to the groove depth direction of the cleaning brush groove and is vertical to the axial direction of the insulating operating rod. In actual operation, the angle of the cleaning brush head can be adjusted by loosening the locking nut; after the angle of the cleaning brush head is adjusted, the cleaning brush head can be locked and fixed on the insulating operating rod by screwing the locking nut. So, can adjust the angle of cleaning the brush head as required to the angle of cleaning the brush groove is adjusted, so that during the operation, make the entering that the insulator can be more convenient clean in the brush groove.
Further, as shown in fig. 1, a plurality of bristles 4 are also arranged on the bottom wall of the notch of the cleaning brush groove facing the cleaning brush groove. Therefore, the cleaning effect of the insulator is improved.
Further, as shown in fig. 1, the vibratory sweeper for overhead line insulators further comprises a notch cover 7 and a cover self-triggering closing device 8. The notch cover plate is used for sealing and covering the notch of the cleaning brush groove. One side of the notch cover plate is rotatably arranged on the cleaning brush head through a shaft lever 7.1. The shaft lever is provided with a torsional spring which is used for driving the notch cover plate to rotate around the shaft lever and sealing and shielding the notch of the cleaning brush groove, one surface of the notch cover plate is provided with a limiting ring 7.2, and the other surface of the notch cover plate is provided with a plurality of brush hairs 4. When the notch cover plate rotates around the shaft under the action of the torsion spring and seals the notch of the cleaning brush groove, and the brush bristles on the other plate surface of the notch cover plate extend into the cleaning brush groove. The cover plate self-triggering closing device 8 comprises a triggering rod 8.1 positioned in a cleaning brush groove, a guide hole arranged on the cleaning brush head, a guide rod 8.2 sliding along the guide hole, a linkage rod 8.3 positioned outside the cleaning brush head and parallel to the guide rod, and a connecting rod 8.4 connecting the guide rod and the linkage rod. The sliding direction of the guide rod is parallel to the groove depth direction of the cleaning brush groove, and one end of the guide rod is connected with the trigger rod. In this embodiment, the trigger bar is parallel to the length direction of the cleaning brush groove. The shaft lever is parallel to the length direction of the cleaning brush groove. The connecting rod is located the outside of cleaning the brush head, and the connecting rod is located the one side of the notch of brush groove is cleaned dorsad. The guide holes are two, and the guide rods correspond to the guide holes one by one. One end of the guide rod in the two guide holes is connected with the trigger rod.
As shown in fig. 1, when the linkage rod is inserted into the limiting ring, the opening of the cleaning brush groove is in an open state, and the insulator can enter the cleaning brush groove from the opening of the cleaning brush groove.
When the linkage rod is separated from the limiting ring, the notch cover plate rotates around the shaft rod under the action of the torsion spring and seals and covers the notch of the cleaning brush groove.
This scheme structure can be under the condition of the operating procedure when not increasing the vibrating sweeper that overhead line insulator was used and cleaning the insulator, improves the effect of cleaning to the insulator, and is concrete, when the vibrating sweeper that overhead line insulator was used, got into the in-process that cleans the brush inslot at the insulator, after insulator and trigger bar, the insulator will promote the trigger bar and remove toward the tank bottom direction that cleans the brush groove to drive the gangbar through the connecting rod and remove together, so that gangbar and spacing ring separation. When the linkage rod is separated from the limiting ring, the insulator is completely accommodated in the cleaning brush groove, the notch cover plate rotates around the shaft rod under the action of the torsion spring and seals and covers the notch of the cleaning brush groove, and bristles of the notch cover plate extend into the cleaning brush groove and are in contact with the insulator; therefore, the brush hair on the notch cover plate can be matched with the brush hair on the groove wall of the cleaning brush groove to clean the insulator so as to improve the cleaning effect; meanwhile, the operation steps of the vibration type cleaner for the overhead line insulator in cleaning the insulator cannot be increased.
Further, as shown in fig. 1, a magnet 9 is also arranged on the notch cover plate, and a magnet is also arranged on the cleaning brush head. When the notch cover plate rotates around the shaft rod under the action of the torsion spring and covers the notch of the cleaning brush groove, the magnet on the notch cover plate and the magnet on the cleaning brush head are attracted mutually. Therefore, after the notch cover plate seals and covers the notch of the cleaning brush groove, the magnet on the notch cover plate and the magnet on the cleaning brush head are mutually attracted so as to ensure that the notch cover plate is in a state of sealing and covering the notch of the cleaning brush groove.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent transformation of doing above embodiment the utility model discloses technical scheme's protection scope.

Claims (10)

1. A vibrating type sweeper for an overhead line insulator is characterized by comprising an insulating operating rod (1), a sweeping brush head (2) and a vibrator (3), wherein the sweeping brush head (2) is arranged at the upper end of the insulating operating rod, a sweeping brush groove (2.1) for accommodating the insulator is formed in the sweeping brush head, the sweeping brush groove penetrates through the sweeping brush head, openings are formed in two ends of the sweeping brush groove, and a plurality of bristles (4) are arranged on two opposite inner side walls of the sweeping brush groove; the vibrator (3) is arranged on the cleaning brush head and is used for enabling the cleaning brush head to vibrate.
2. A vibrating sweeper for an overhead line insulator according to claim 1, wherein the sweeping brush head (2) is fixed to the upper end of an insulated operating rod.
3. A vibratory sweeper for an overhead line insulator as claimed in claim 1, wherein said sweeping brush head (2) is rotatably mounted on the upper end of the insulated operating rod by means of a shaft.
4. A vibrating sweeper for overhead line insulators according to claim 3, wherein the sweeping brush head is provided with a screw rod (5), the screw rod is provided with a locking nut (6), the upper end of the insulating operating rod is provided with a connecting through hole (1.2), the screw rod (5) penetrates through the connecting through hole, the locking nut (6) locks and fixes the sweeping brush head on the upper end of the insulating operating rod, and the screw rod forms the rotating shaft.
5. The vibrating type sweeper for the overhead line insulator is characterized by further comprising a notch cover plate (7) and a cover plate self-triggering closing device (8), wherein the notch cover plate (7) is used for sealing and covering a notch of the cleaning brush groove (2.1), one side of the notch cover plate is rotatably arranged on the cleaning brush head (2) through a shaft rod (7.1), a torsion spring is arranged on the shaft rod and is used for driving the notch cover plate to rotate around the shaft rod and sealing and covering the notch of the cleaning brush groove (2.1), a limiting ring (7.2) is arranged on one plate surface of the notch cover plate (7), and a plurality of bristles (4) are arranged on the other plate surface of the notch cover plate; the cover plate self-triggering closing device (8) comprises a trigger rod (8.1) located in a cleaning brush groove, a guide hole formed in a cleaning brush head, a guide rod (8.2) sliding along the guide hole, a linkage rod (8.3) located on the outer side of the cleaning brush head and parallel to the guide rod, and a connecting rod (8.4) connecting the guide rod and the linkage rod, wherein the sliding direction of the guide rod (8.2) is parallel to the groove depth direction of the cleaning brush groove, and one end of the guide rod is connected with the trigger rod.
6. A vibrating sweeper for overhead line insulators according to claim 5, characterized in that when the linkage rod (8.3) is inserted in the limiting ring (7.2), the notch of the sweeping brush groove (2.1) is in an open state, and the insulator can enter the sweeping brush groove from the notch of the sweeping brush groove.
7. A vibrating sweeper for overhead line insulators according to claim 5, characterized in that when the linkage rod (8.3) is separated from the limit ring (7.2), the notch cover plate (7) rotates around the shaft under the action of the torsion spring and seals the notch of the sweeping brush groove (2.1), and the bristles on the other plate surface of the notch cover plate extend into the sweeping brush groove.
8. A vibrating sweeper for overhead line insulators, as claimed in claim 5, wherein said notch cover is further provided with a magnet, and said cleaning brush head is also provided with a magnet (9), so that when the notch cover is rotated around the shaft by the torsion spring and covers the notch of the cleaning brush slot, the magnet on the notch cover and the magnet on the cleaning brush head attract each other.
9. An oscillating sweeper for overhead line insulators according to claim 1, 2, 3 or 4, characterized in that a plurality of bristles (4) are arranged on the bottom wall of the notch of the sweeping brush groove (2.1) facing the sweeping brush groove.
10. A vibratory sweeper for an overhead line insulator as claimed in claim 1, 2 or 3, characterised in that said vibrator (3) is a high frequency vibrator.
CN202220364148.3U 2022-02-22 2022-02-22 Vibrating sweeper for overhead line insulator Active CN217250843U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220364148.3U CN217250843U (en) 2022-02-22 2022-02-22 Vibrating sweeper for overhead line insulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220364148.3U CN217250843U (en) 2022-02-22 2022-02-22 Vibrating sweeper for overhead line insulator

Publications (1)

Publication Number Publication Date
CN217250843U true CN217250843U (en) 2022-08-23

Family

ID=82856808

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220364148.3U Active CN217250843U (en) 2022-02-22 2022-02-22 Vibrating sweeper for overhead line insulator

Country Status (1)

Country Link
CN (1) CN217250843U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114669516A (en) * 2022-02-22 2022-06-28 国网浙江省电力有限公司江山市供电公司 Live working cleans insulator device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114669516A (en) * 2022-02-22 2022-06-28 国网浙江省电力有限公司江山市供电公司 Live working cleans insulator device

Similar Documents

Publication Publication Date Title
CN217250843U (en) Vibrating sweeper for overhead line insulator
CN106388714A (en) Floor cleaning device
CN111134568A (en) Elevator door gap is with cleaing away debris device
CN110685565B (en) Improved generation fire prevention rolling slats door
CN114669516A (en) Live working cleans insulator device
CN209918392U (en) Inside cleaning device of hand-held type machine case
CN104207734A (en) Intelligent floor mopping machine
CN113042423B (en) Join in marriage automatic sampling device of net twine way insulator
CN211386123U (en) Plasma cleaning device
CN213915211U (en) Ultrasonic cleaning device for culture dish
CN210523188U (en) Ultrasonic medical equipment's belt cleaning device
CN209450446U (en) A kind of hand-held automatic spraying cleaner
CN217251245U (en) Cleaning device for sewage treatment
CN220005035U (en) Ash removal device
CN219048248U (en) Floor brush assembly and floor cleaning device
CN213882161U (en) High-voltage electrified insulation cleaning brush device
CN218251793U (en) Mine ore classification machinery flushing machine
CN217017627U (en) A belt cleaning device for radix hedysari
CN201052123Y (en) Ground handle
CN221657427U (en) Reagent bottle washs device
CN218136923U (en) Device for removing burrs on surface of cable conductor
CN217094888U (en) Ultrasonic cleaning device for cleaning waste paint bucket fragments
US2261738A (en) Dust mop cleaner
CN216854561U (en) Brush head device and dust collector
CN218982597U (en) Milk powder drying tower sweeper

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant