CN108376513B - Winding device and safe winding device - Google Patents

Winding device and safe winding device Download PDF

Info

Publication number
CN108376513B
CN108376513B CN201810386095.3A CN201810386095A CN108376513B CN 108376513 B CN108376513 B CN 108376513B CN 201810386095 A CN201810386095 A CN 201810386095A CN 108376513 B CN108376513 B CN 108376513B
Authority
CN
China
Prior art keywords
rotating shaft
return spring
winding device
tail sleeve
rotary shaft
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
CN201810386095.3A
Other languages
Chinese (zh)
Other versions
CN108376513A (en
Inventor
韩金越
龚演平
张斌斌
胡良山
刘延伟
周俊宏
张健
郭伟逢
刘欢
张焕燊
傅龙伟
刘晓洲
陈正龙
陈慧聪
谢树泳
鄢雨侯
李佳奇
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.)
Guangdong Power Grid Co Ltd
Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Huizhou Power Supply Bureau of Guangdong Power Grid 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 Guangdong Power Grid Co Ltd, Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN201810386095.3A priority Critical patent/CN108376513B/en
Publication of CN108376513A publication Critical patent/CN108376513A/en
Application granted granted Critical
Publication of CN108376513B publication Critical patent/CN108376513B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F7/00Signs, name or number plates, letters, numerals, or symbols; Panels or boards

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Rehabilitation Tools (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)

Abstract

The invention provides a winding device and a safe winding device, and relates to the technical field of transformer substations, wherein the winding device comprises: the rotary shaft and the tail sleeve are arranged at the end part of the rotary shaft, the rotary shaft is hollow, a return spring is arranged in the rotary shaft, and the return spring is connected with the tail sleeve; the marking cloth is wound outside the rotating shaft, and the rotating shaft can be rotatably arranged on the tail sleeve through the return spring. The winding device provided by the invention realizes the rotation of the rotating shaft through the return spring, so that the marking cloth outside the rotating shaft is pulled out or retracted, and the arrangement and recovery of the safety measures are realized through the pulling or retraction, so that the winding device has the advantages of convenience in use, safety, reliability and the like.

Description

Winding device and safe winding device
Technical Field
The invention relates to the technical field of transformer substations, in particular to a winding device and a safe winding device.
Background
The large-scale modification, reconstruction and extension construction of the transformer substation are frequent, the workload on the secondary screen cabinet is rapidly increased, and the phenomenon that constructors open the operation screen cabinet door by mistake occurs. At present, operators mainly utilize ' equipment to inhale with the metal frame region on two sides of the secondary screen cabinet on the back of the red cloth to fix the red cloth, and the ' work here ' sign board is placed on the ground in front of the secondary screen cabinet, so that the warning effect is achieved. However, the equipment arranged by operators often has a falling phenomenon when the equipment runs, the position of the sign board can be moved when the equipment works, so that the site safety measures are disordered, the due warning effect is lost, and the workers risk that the workers walk wrong screen cabinets to touch the running secondary equipment by mistake.
In addition, before the safety measures are arranged, operators must calculate the number of the required red cloths and the required identification plates in advance, then the red cloths and the identification plates with the corresponding number are taken out from the storage tank, and the red cloths and the identification plates are removed one by one and are arranged and replaced. Meanwhile, as the sizes of the existing red cloth and the screen cabinets of partial factories are not matched, the magnets cannot be firmly attracted to the two sides of the screen cabinet, and the red cloth needs to be fixed one by using an insulating tape, so that a large amount of manpower, material resources and time are consumed, and the working efficiency is extremely low.
The back magnet on the red cloth is utilized to fix the red cloth on the secondary screen cabinet, so that the problem that the red cloth is easy to fall off for a long time exists, and meanwhile, the red cloth is required to be fixed one by using an insulating adhesive tape due to the fact that the sizes of the existing red cloth and the screen cabinets of partial factories are not matched. The position of the sign board which is placed on the ground and works at the position can be moved, and the due warning effect is lost, so that the working efficiency is extremely low and a good protection effect cannot be achieved.
When multiple teams work alternately, the equipment runs in red cloth and the nameplates work at the same place in a unified mode, and the equipment is not distinguished, so that the working range of each teams is not clear, and the condition of disordered construction sites exists.
The existing safety measures adopt the red cloth, which has the problems of inconvenient use, time waste, loss of protective effect during movement and the like.
Disclosure of Invention
The invention aims to provide a winding device to solve the technical problems that the existing red cloth adopted by safety measures is inconvenient to use, wastes time, loses protective effect when moving and the like.
The invention further provides a safe winding device, which comprises the winding device.
In order to solve the technical problems, the invention adopts the following technical scheme; the winding device provided by the first aspect of the invention comprises: the rotary shaft and the tail sleeve are arranged at the end part of the rotary shaft, the rotary shaft is hollow, a return spring is arranged in the rotary shaft, and the return spring is connected with the tail sleeve; the marking cloth is wound outside the rotating shaft, and the rotating shaft can be rotatably arranged on the tail sleeve through the return spring.
In the winding device provided by the invention, the rotating shaft is hollow, and a return spring is arranged in the rotating shaft and is connected with the tail sleeve. The rotating shaft is rotated through the return spring, so that the marking cloth outside the rotating shaft is pulled out or retracted, and safety measures are arranged and restored through pulling out or retraction, and the device has the advantages of convenience in use, safety, reliability and the like.
In any of the above technical solutions, further, the number of the rotating shaft and the return spring is at least two, and the return springs are in one-to-one correspondence with the rotating shaft. The two rotating shafts are arranged to facilitate the arrangement of two marking cloths, wherein the two marking cloths are red marking cloth representing that the device is running and transparent marking cloth representing that the device is working.
In any of the above technical solutions, the device further comprises an adjusting piece for driving the tail sleeve to move along the expansion and contraction direction of the return spring. The length of the return spring can be adjusted by the adjusting piece, so that the elastic force of the return spring is adjusted.
In any of the above technical solutions, further, the adjusting member is connected with the tail sleeve through threads.
For convenient use, an internal thread can be arranged in the adjusting piece, and an external thread matched with the internal thread is arranged outside the tail sleeve. The tail sleeve moves up and down along the axial direction of the adjusting piece through the internal thread and the external thread, and then the elasticity of the return spring is adjusted.
In any of the above technical solutions, further, the return spring is fixed to the rotating shaft through a plurality of fixing points.
In any of the above technical solutions, further, the plurality of fixing points are uniformly distributed along the axes of both sides of the rotating shaft.
In order to facilitate rotation of the rotating shaft, in any of the above technical solutions, further, balls are disposed between the tail sleeve and the rotating shaft.
In order to facilitate the display of the working team, in any of the above technical solutions, further, a label bag for placing labels is provided on the label cloth. The tag bag is transparent material, and the personnel of being convenient for look over.
In any of the above technical solutions, the portable electronic device further comprises a housing, wherein the rotating shaft is arranged in the housing, and the housing is provided with a flip.
The safe winding device provided by the second aspect of the present invention is provided with the winding device provided by the first aspect, so that the safe winding device has all the beneficial effects of the winding device provided by the first aspect, and the safe winding device is not described in detail herein.
In any of the above embodiments, further comprising a separator disposed outside the housing.
By adopting the technical scheme, the invention has the following beneficial effects:
in the winding device provided by the invention, the rotating shaft is hollow, and a return spring is arranged in the rotating shaft and is connected with the tail sleeve. The rotating shaft is rotated through the return spring, so that the marking cloth outside the rotating shaft is pulled out or retracted, and safety measures are arranged and restored through pulling out or retraction, and the device has the advantages of convenience in use, safety, reliability and the like.
Further, the number of the rotating shaft and the number of the return springs are at least two, and the return springs are in one-to-one correspondence with the rotating shaft.
Further, the device also comprises an adjusting piece for driving the tail sleeve to move along the expansion and contraction direction of the return spring.
Further, the adjusting piece is connected with the tail sleeve through threads.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the invention and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an internal structure of a winding device according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of an external structure of a security winding device according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a ball in a safety winding device according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a manual operation hole in the safety winding device according to the second embodiment of the present invention.
Reference numerals:
1. a return spring; 2. an adjusting member; third, external threads;
4. a tail sleeve; 5. a rotating shaft; sixthly, fixing points;
7. a manual operation hole; eighth, the ball; 10. a flip cover;
11. a storage tank; 12. a partition board.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The invention is further illustrated with reference to specific embodiments.
Example 1
FIG. 1 is a schematic diagram of an internal structure of a winding device according to a first embodiment of the present invention; fig. 2 is an external structural schematic diagram of a security winding device according to an embodiment of the present invention.
As shown in fig. 1 and fig. 2, a winding device provided by an embodiment of a first aspect of the present invention includes: the rotary shaft 5 and the tail sleeve 4 are arranged at the end part of the rotary shaft 5, the rotary shaft 5 is hollow, a return spring 1 is arranged in the rotary shaft 5, and the return spring 1 is connected with the tail sleeve 4; the marking cloth is wound outside the rotating shaft 5, and the rotating shaft 5 can be rotatably arranged on the tail sleeve 4 through the return spring 1.
In the winding device provided by the invention, the rotating shaft 5 is hollow, the rotating shaft 5 is internally provided with the return spring 1, and the return spring 1 is connected with the tail sleeve 4. The rotating shaft 5 is rotated through the return spring 1, so that the marking cloth outside the rotating shaft 5 is pulled out or retracted, and safety measures are arranged and restored through pulling or retraction, so that the device has the advantages of convenience in use, safety, reliability and the like.
In any of the above technical solutions, further, the number of the rotating shaft 5 and the return spring 1 is at least two, and the return springs 1 are in one-to-one correspondence with the rotating shaft 5. The provision of two shafts 5 facilitates the provision of two marking cloths, namely a red marking cloth representing "there is equipment in operation" and a transparent marking cloth representing "working here".
A plurality of marking cloths may be provided as needed.
In any of the above technical solutions, the device further comprises an adjusting piece 2 for driving the tail sleeve 4 to move along the expansion and contraction direction of the return spring 1. The adjusting piece 2 can adjust the length of the return spring 1, thereby adjusting the elastic force of the return spring 1.
In any of the above solutions, further, the adjusting member 2 is screwed with the tail sleeve 4.
For convenience of use, an internal thread may be provided in the adjusting member 2, and an external thread 3 matching the internal thread is provided outside the tail sleeve 4. The tail sleeve 4 moves up and down along the axial direction of the adjusting piece 2 through the internal thread and the external thread 3, so that the elasticity of the return spring 1 is adjusted.
In any of the above solutions, further, the return spring 1 is fixed to the rotating shaft 5 by a plurality of fixing points 6.
In any of the above technical solutions, further, the fixing points 6 are uniformly distributed along the axis of the two sides of the rotating shaft 5.
The locating points on the two sides are connected to form a Z line, and the structure enables the return spring 1 to be more stably fixed on the rotating shaft 5. The return spring 1 can be fixed on the inner side of the rotating shaft 5 through welding or a clamping piece.
In order to facilitate the display of the working team, in any of the above technical solutions, further, a label bag for placing labels is provided on the label cloth. The tag bag is transparent material, and the personnel of being convenient for look over.
Setting the labels facilitates the definition of the working range of each team during multi-team cross working.
In any of the above technical solutions, the device further comprises a housing, the rotating shaft 5 is disposed in the housing, and the housing is provided with a flip 10.
The structure of the flip cover 10 is arranged, when the flip cover 10 is dismounted, the rotating shaft 5 and the return spring 1 inside the rotating shaft can be taken out only by turning up the flip cover 10, and when the flip cover is replaced, the design of the flip cover 10 is convenient for replacing the rotating shaft 5 and the return spring 1.
The safe winding device provided by the second aspect of the present invention is provided with the winding device provided by the first aspect, so that the safe winding device has all the beneficial effects of the winding device provided by the first aspect, and the safe winding device is not described in detail herein.
In any of the above embodiments, further comprising a separator 12 disposed outside the housing. The partition 12 is used for fixing labels, and a plurality of partition 12 are arranged outside the shell and used for fixing labels printed with different group information.
The storage groove 11 for storing labels is arranged between the adjacent partition plates 12, so that labels of different types can be stored conveniently, and the labels are matched with the label bags on the label cloth for use, so that the cross working range of multiple groups is defined.
The cabinet body of the screen cabinet is provided with the buckle, so that the column can be clamped to mark the cloth, and the mark cloth is leveled and fixed.
In the safety winding device provided by the invention, the traditional mode of hanging the red cloth is changed, and the arrangement and recovery of safety measures can be realized by pulling and winding. The device is dual-purpose, the marking cloth can be pulled and retracted in two directions, and the arrangement and recovery of two safety measures of 'equipment in operation' and 'work in the process' are effectively solved. The device is fixed firmly and reliably, and the risks of falling off and being moved are avoided. For the double-door type screen cabinet, the stretching length of the marking cloth can be adjusted according to the working requirement, the opening and closing of the cabinet door during normal working are not affected, and the double-door type screen cabinet is suitable for screen cabinets of different manufacturers.
Example two
As shown in fig. 3 and 4, in order to facilitate the rotation of the rotating shaft 5, in any of the above technical solutions, a ball 8 is further disposed between the tail sleeve 4 and the rotating shaft 5.
The ball 8 is matched with the two rotating shafts 5, so that the marking cloth can be effectively pulled out and retracted.
In order to prevent the non-return force spring 1 from being used for a long time, the problem that the spring tension is insufficient can be manually solved, a polygonal manual operation hole 7 is formed in the bottom of the rotating shaft 5, and a polygonal wrench is adopted to rotate the rotating shaft 5. The rest of the first embodiment is not described here again.
When the winding device provided by the invention is used, the bidirectional stretching function of the marking cloth can be realized through the two rotating shafts 5, so that the marking cloth can be effectively pulled out and retracted from the left side and the right side of the flip cover 10 during running and working, and mutual interference is avoided. The length of the return spring 1 is adjusted through the thread between the adjusting piece 2 and the tail sleeve 4, so that the elastic force of the spring is controlled.
In summary, in the winding device provided by the invention, the rotating shaft is hollow, and the rotating shaft is internally provided with the return spring, and the return spring is connected with the tail sleeve. The rotating shaft is rotated through the return spring, so that the marking cloth outside the rotating shaft is pulled out or retracted, and safety measures are arranged and restored through pulling out or retraction, and the device has the advantages of convenience in use, safety, reliability and the like.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Claims (5)

1. A safety wrap-up device, comprising: the rotary shaft and the tail sleeve are arranged at the end part of the rotary shaft, the rotary shaft is hollow, a return spring is arranged in the rotary shaft, and the return spring is connected with the tail sleeve; the marking cloth is wound outside the rotating shaft, and the rotating shaft is rotatably arranged on the tail sleeve through the return spring;
the return spring is fixed with the rotating shaft through a plurality of fixed points;
the fixed points are uniformly distributed along the axes of the two sides of the rotating shaft;
the positioning points on two sides of the rotating shaft are connected to form Z rows, so that the return spring is more stably fixed on the rotating shaft;
the label bag for placing labels is arranged on the label cloth;
the rotary shaft is arranged in the shell, and a flip cover is arranged on the shell;
the tag reader is characterized by further comprising a partition plate arranged outside the shell, wherein the partition plate is used for fixing the tag, a plurality of partition plates are arranged outside the shell, and a storage groove for storing the tag is arranged between every two adjacent partition plates.
2. The safety wrap apparatus according to claim 1, wherein the number of the rotational shaft and the return spring is at least two, and the return springs are in one-to-one correspondence with the rotational shaft.
3. The safety wrap device of claim 1 further comprising an adjustment member that moves the tail sleeve in the direction of extension of the return spring.
4. A safety wrap as claimed in claim 3 wherein the adjustment member is threadably connected to the tail sleeve.
5. The safety wrap-up device of claim 1 wherein balls are disposed between the tail sleeve and the spindle.
CN201810386095.3A 2018-04-26 2018-04-26 Winding device and safe winding device Active CN108376513B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810386095.3A CN108376513B (en) 2018-04-26 2018-04-26 Winding device and safe winding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810386095.3A CN108376513B (en) 2018-04-26 2018-04-26 Winding device and safe winding device

Publications (2)

Publication Number Publication Date
CN108376513A CN108376513A (en) 2018-08-07
CN108376513B true CN108376513B (en) 2024-02-13

Family

ID=63033022

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810386095.3A Active CN108376513B (en) 2018-04-26 2018-04-26 Winding device and safe winding device

Country Status (1)

Country Link
CN (1) CN108376513B (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6279639B1 (en) * 1999-06-16 2001-08-28 Bos Gmbh & Co. Separating mechanism with variable pull-back force
CN2493117Y (en) * 2001-06-29 2002-05-29 范富美 Curtain winding structure with rewinding force
CN2674580Y (en) * 2003-12-31 2005-01-26 孙晓球 Under driving rotary show rack
CN1757873A (en) * 2004-10-10 2006-04-12 范富美 Reel of rolling curtain
CN200986793Y (en) * 2006-09-15 2007-12-05 孙晓球 Advertisement coiling picture cylinder with spring self-locking device
CN204538501U (en) * 2015-05-12 2015-08-05 国网黑龙江省电力有限公司鹤岗供电公司 The telescopic false-touch prevention crash device of screen is protected in transformer station's control
CN205302866U (en) * 2016-01-14 2016-06-08 新乡职业技术学院 Cloth cover advertisement spool for marketing
CN208044974U (en) * 2018-04-26 2018-11-02 广东电网有限责任公司 Wrap-up and safe wrap-up

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6279639B1 (en) * 1999-06-16 2001-08-28 Bos Gmbh & Co. Separating mechanism with variable pull-back force
CN2493117Y (en) * 2001-06-29 2002-05-29 范富美 Curtain winding structure with rewinding force
CN2674580Y (en) * 2003-12-31 2005-01-26 孙晓球 Under driving rotary show rack
CN1757873A (en) * 2004-10-10 2006-04-12 范富美 Reel of rolling curtain
CN200986793Y (en) * 2006-09-15 2007-12-05 孙晓球 Advertisement coiling picture cylinder with spring self-locking device
CN204538501U (en) * 2015-05-12 2015-08-05 国网黑龙江省电力有限公司鹤岗供电公司 The telescopic false-touch prevention crash device of screen is protected in transformer station's control
CN205302866U (en) * 2016-01-14 2016-06-08 新乡职业技术学院 Cloth cover advertisement spool for marketing
CN208044974U (en) * 2018-04-26 2018-11-02 广东电网有限责任公司 Wrap-up and safe wrap-up

Also Published As

Publication number Publication date
CN108376513A (en) 2018-08-07

Similar Documents

Publication Publication Date Title
CN201345468Y (en) Power socket with coiling disc
CN206581178U (en) Portable warning enclosing
CN108376513B (en) Winding device and safe winding device
CN206922256U (en) A kind of spliced distribution box
CN202422598U (en) Transformer substation device signboard
CN208044974U (en) Wrap-up and safe wrap-up
CN109687328A (en) A kind of novel secondary safety measure suit
CN209253979U (en) A kind of device that proactive tool falls
CN207663669U (en) A kind of alarming device based on protection screen cabinet
CN101936089B (en) Telescopic safety fence
CN213938581U (en) Coal tower gyration cloth machine control power mounting structure
CN205827721U (en) The displaying teaching aid that a kind of higher education professional teaching uses
CN210909845U (en) 10 KV switch energy storage spring dismounting device
CN205666548U (en) Cable wellhead pulley based on RFID tag
CN212675871U (en) Multipurpose signboard for transformer substation
CN203631064U (en) Protection screen safety warning board of substation protector for electric power system
CN113920851A (en) Sign board suitable for protection screen of transformer substation
CN209571757U (en) A kind of fixed device of high-tension switch cabinet cover bar
CN221002239U (en) Scalable safety purse seine structure
CN214897133U (en) Panel detachable presentation device for electronic information teaching
CN209099019U (en) Turn over socks plate
CN206097744U (en) Instrument marks tablet
CN207781021U (en) A kind of economics teaching aid
CN116092394A (en) Safety measure integrated device of electric screen cabinet containing nameplate
CN112447453B (en) Anti-misoperation device for air switch of relay protection screen

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant