CN111874223A - Be used for surveying and mapping unmanned aerial vehicle that takes photo by plane - Google Patents

Be used for surveying and mapping unmanned aerial vehicle that takes photo by plane Download PDF

Info

Publication number
CN111874223A
CN111874223A CN202010801298.1A CN202010801298A CN111874223A CN 111874223 A CN111874223 A CN 111874223A CN 202010801298 A CN202010801298 A CN 202010801298A CN 111874223 A CN111874223 A CN 111874223A
Authority
CN
China
Prior art keywords
unmanned aerial
aerial vehicle
surveying
mapping
sliding
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.)
Withdrawn
Application number
CN202010801298.1A
Other languages
Chinese (zh)
Inventor
杨帆
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.)
Qinghai Chonglin Surveying And Mapping Technology Co ltd
Original Assignee
Qinghai Chonglin Surveying And Mapping Technology 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 Qinghai Chonglin Surveying And Mapping Technology Co ltd filed Critical Qinghai Chonglin Surveying And Mapping Technology Co ltd
Priority to CN202010801298.1A priority Critical patent/CN111874223A/en
Publication of CN111874223A publication Critical patent/CN111874223A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C27/00Rotorcraft; Rotors peculiar thereto
    • B64C27/04Helicopters
    • B64C27/08Helicopters with two or more rotors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C25/00Alighting gear
    • B64C25/02Undercarriages
    • B64C25/08Undercarriages non-fixed, e.g. jettisonable
    • B64C25/10Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
    • B64C25/12Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like sideways
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C25/00Alighting gear
    • B64C25/02Undercarriages
    • B64C25/08Undercarriages non-fixed, e.g. jettisonable
    • B64C25/10Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
    • B64C25/18Operating mechanisms
    • B64C25/24Operating mechanisms electric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C25/00Alighting gear
    • B64C25/32Alighting gear characterised by elements which contact the ground or similar surface 
    • B64C25/58Arrangements or adaptations of shock-absorbers or springs
    • B64C25/62Spring shock-absorbers; Springs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

The invention discloses an unmanned aerial vehicle for surveying and mapping, which comprises a machine body, wherein first fixing plates are arranged on the front side and the rear side of the machine body, a rotating rod is arranged at the end part of each first fixing plate, the top of the rotating rod is rotatably connected with fan blades, a driving motor is arranged in the middle of the lower surface of the machine body, an output shaft of the driving motor is fixedly connected with a first belt wheel, the first belt wheel is connected with a second belt wheel through a belt, the second belt wheel is fixedly connected with the middle part of a main shaft, first bevel gears are arranged at the left end and the right end of the main shaft, the front side and the rear side of each first bevel gear are engaged and connected with second bevel gears. The invention is suitable for an unmanned aerial vehicle for surveying and mapping, the lead screw is driven to rotate by arranging the driving motor, so that the supporting legs are driven to rotate, when the unmanned aerial vehicle flies, the supporting legs are folded at the lower part of the machine body, the volume of the whole device is reduced, and the airflow resistance received during flying is reduced.

Description

Be used for surveying and mapping unmanned aerial vehicle that takes photo by plane
Technical Field
The invention relates to the technical field of surveying and mapping, in particular to an unmanned aerial vehicle for surveying and mapping aerial photography.
Background
An unmanned aircraft, abbreviated as "drone", and abbreviated in english as "UAV", is an unmanned aircraft that is operated by a radio remote control device and a self-contained program control device, or is operated autonomously, either completely or intermittently, by an onboard computer.
Drones tend to be more suitable for tasks that are too "fool, dirty, or dangerous" than are manned aircraft. Unmanned aerial vehicles can be classified into military and civil applications according to the application field. For military use, unmanned aerial vehicles divide into reconnaissance aircraft and target drone. In the civil aspect, the unmanned aerial vehicle + the industry application is really just needed by the unmanned aerial vehicle; at present, the unmanned aerial vehicle is applied to the fields of aerial photography, agriculture, plant protection, miniature self-timer, express transportation, disaster relief, wild animal observation, infectious disease monitoring, surveying and mapping, news reporting, power inspection, disaster relief, film and television shooting, romantic manufacturing and the like, the application of the unmanned aerial vehicle is greatly expanded, and developed countries actively expand industrial application and develop unmanned aerial vehicle technology.
Chinese patent (publication No. CN 210175120U) discloses an unmanned aerial vehicle for surveying and mapping, the buffering and damping performance to current unmanned aerial vehicle is relatively poor, when falling to ground, collision is easily caused between machine and the landing leg, the problem of influence unmanned aerial vehicle's life, the following scheme is proposed, it includes unmanned aerial vehicle body, the bottom fixed mounting of unmanned aerial vehicle body has the fixing base, and the fixed slot has been seted up to the bottom of fixing base, and slidable mounting has the cushion socket in the fixed slot, is equipped with buffer in the fixed slot, buffer and cushion socket looks adaptation, the bottom fixed mounting of cushion socket has a plurality of landing legs, and the pressure spring groove has all been seted up to the bottom of a plurality of landing legs, and equal slidable mounting has the buffer beam in a plurality of pressure spring grooves, and the top of a plurality of buffer beams all has welded first pressure spring. The device simple structure, convenient operation, the buffering damping performance of this unmanned aerial vehicle body is better, can not cause the collision between machine and the landing leg, has increased unmanned aerial vehicle's life, but the device's landing leg can't draw in at the in-process of flight, leads to using inconveniently, consequently needs improve the device.
Disclosure of Invention
The invention provides an unmanned aerial vehicle for surveying and mapping, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an unmanned aerial vehicle for surveying and mapping aerial photography comprises a machine body, wherein first fixing plates are arranged on the front side and the rear side of the machine body, rotating rods are arranged at the end parts of the first fixing plates, blades are rotatably connected to the top parts of the rotating rods, a driving motor is arranged in the middle of the lower surface of the machine body, an output shaft of the driving motor is fixedly connected with a first belt wheel, the first belt wheel is connected with a second belt wheel through a belt, the second belt wheel is fixedly connected with the middle part of a main shaft, first bevel gears are arranged at the left end and the right end of the main shaft, the front side and the rear side of the first bevel gears are meshed and connected with second bevel gears, the second bevel gears are fixedly connected with one end of a lead screw close to the main shaft, the middle part of the lead screw is in threaded connection with the middle part of a nut, the lower part of the nut, the upper end of the supporting leg is rotatably connected with the fixing block, and the upper part of the fixing block is fixedly connected with the lower surface of the machine body.
As a preferred technical scheme of the invention, the lower part of the supporting leg is provided with a limiting plate, and a first spring is arranged between the limiting plate and the supporting plate.
As a preferred technical solution of the present invention, the left and right sides of the lower surface of the machine body are provided with third fixing plates, and the third fixing plates are rotatably connected to the left and right sides of the main shaft.
As a preferable technical scheme of the invention, the left end and the right end of the lower surface of the machine body are provided with second fixing plates, and the second fixing plates are rotatably connected with the front side and the rear side of the screw rod.
As a preferable technical scheme of the invention, a sliding cavity is arranged inside the sliding sleeve, the sliding cavity is connected with a sliding plate in a sliding mode, and the middle part of the sliding plate is fixedly connected with the end part of the sliding rod.
As a preferable technical solution of the present invention, a second spring is provided between the sliding plate and the sliding chamber.
As a preferable technical scheme of the invention, the left end of the machine body is provided with a camera.
As a preferred technical scheme of the invention, the right end of the machine body is provided with a storage battery which is detachably connected with the inside of the machine body.
The invention has the following advantages:
the invention is suitable for an unmanned aerial vehicle for surveying and mapping, the screw rod is driven to rotate by arranging the driving motor, so that the supporting legs are driven to rotate, when the unmanned aerial vehicle flies, the supporting legs are folded at the lower part of the machine body, the volume of the whole device is reduced, the airflow resistance received during flying is reduced, the flying speed is improved, the flying energy consumption is reduced, the cruising duration of the whole device can be improved, and the unmanned aerial vehicle is suitable for popularization and use.
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 an unmanned aerial vehicle for mapping aerial photography.
Fig. 2 is a front view of an unmanned aerial vehicle for mapping aerial images.
Fig. 3 is a right side view of a drone for mapping aerial imagery.
Fig. 4 is a bottom view of a drone for mapping aerial photographs.
FIG. 5 is a schematic diagram that is arranged in surveying and mapping unmanned aerial vehicle sliding sleeve and slide bar to be connected.
In the figure: 1. a body; 2. a first fixing plate; 3. rotating the rod; 4. a fan blade; 5. a camera; 6. a fixed block; 7. supporting legs; 8. a rotating seat; 9. a support plate; 10. a limiting plate; 11. a first spring; 12. a storage battery; 13. a slide bar; 14. a sliding sleeve; 15. a second fixing plate; 16. a nut; 17. a screw rod; 18. a second bevel gear; 19. a first bevel gear; 20. a drive motor; 21. a first pulley; 22. a belt; 23. a second pulley; 24. a main shaft; 25. a third fixing plate; 26. a sliding cavity; 27. a second spring; 28. a sliding plate.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-5, an unmanned aerial vehicle for surveying and mapping includes a main body 1, a camera 5 is disposed at the left end of the main body 1, first fixing plates 2 are disposed at the front and rear sides of the main body 1, a rotating rod 3 is disposed at the end of the first fixing plate 2, a fan blade 4 is rotatably connected to the top of the rotating rod 3, a driving motor 20 is disposed at the middle of the lower surface of the main body 1, an output shaft of the driving motor 20 is fixedly connected to a first belt pulley 21, the first belt pulley 21 is connected to a second belt pulley 23 through a belt 22, the second belt pulley 23 is fixedly connected to the middle of a main shaft 24, third fixing plates 25 are disposed at the left and right sides of the lower surface of the main body 1, the third fixing plates 25 are rotatably connected to the left and right sides of the main shaft 24, first bevel gears 19 are disposed at the left and right ends of the main shaft 24, the, the left end and the right end of the lower surface of the machine body 1 are provided with second fixing plates 15, and the second fixing plates 15 are rotatably connected with the front side and the rear side of the screw rod 17.
The middle part of lead screw 17 threaded connection nut 16, the upper end of the lower part of nut 16 rotates and connects sliding sleeve 14, the lower part sliding connection slide bar 13's of sliding sleeve 14 upper end, sliding sleeve 14's inside is equipped with sliding chamber 26, sliding chamber 26 sliding connection sliding plate 28, the tip of sliding bar 13 of the middle part fixed connection of sliding plate 28, be equipped with second spring 27 between sliding plate 28 and the sliding chamber 26, the lower extreme of sliding bar 13 rotates the middle part of connecting supporting leg 7, the lower extreme of supporting leg 7 is equipped with rotates seat 8, the lower part of rotating seat 8 rotates and connects backup pad 9, the upper end of supporting leg 7 rotates and connects fixed block 6, the lower surface of the upper portion fixed connection organism 1 of fixed block 6, and the lower part of supporting leg 7 is equipped with limiting plate 10, is equipped with first spring 11 between limiting.
Example two
Referring to fig. 1, the other contents of the present embodiment are the same as those of the first embodiment, except that: the right end of the machine body 1 is provided with a storage battery 12, and the storage battery 12 is detachably connected with the inside of the machine body 1. Because the time spent that the survey and drawing needs is longer, ordinary unmanned aerial vehicle is in order to reduce organism 1's weight, can't do the battery 12 very big usually, this has just also led to unmanned aerial vehicle can't accomplish the survey and drawing work of a whole day after being full of the electricity, design into detachable with battery 12 this moment, after a battery exhausts, can directly make the work that unmanned aerial vehicle can last through the mode of battery 12 who changes new to unmanned aerial vehicle's operating duration has been improved.
In the implementation process of the invention, wireless communication and control components are arranged in the unmanned aerial vehicle, so that the specific way of data transmission between the unmanned aerial vehicle and the ground and the way of operating the unmanned aerial vehicle by an operator belong to common methods, which is not described in detail in the description, starting the unmanned aerial vehicle, enabling fan blades 4 of the unmanned aerial vehicle to rotate, enabling the unmanned aerial vehicle to start to take off under the action of a reaction force, when the unmanned aerial vehicle flies into the air, the unmanned aerial vehicle does not need the action of supporting legs 7, and can drive a driving motor 20, the driving motor 20 drives a main shaft 24 to rotate through a first belt pulley 21, a belt 22 and a second belt pulley 23, the main shaft 24 drives a screw rod 17 to rotate through a first bevel gear 19 and a second bevel gear 18 which are meshed and connected, the screw rod 17 moves towards the middle in the rotating process, two opposite nuts 16 move close to each other, and, thereby rotating the support leg 7 in a direction approaching the machine body 1. Thereby make supporting leg 7 be drawn in the lower part at organism 1, and at this moment under the effect of first spring 11, backup pad 9 rotates towards the direction of organism 1, thereby make supporting leg 7 and backup pad 9 all draw in the lower part at organism 1 with the lower part of organism 1 is parallel, the volume of whole organism 1 has been reduced, thereby make the air current resistance that organism 1 received when flying reduce, the speed of flight has been improved, the energy consumption has also been reduced, when unmanned aerial vehicle needs to land, reverse start driving motor 20, thereby make lead screw 17 reversal, nut 16 moves far away from each other this moment, thereby promote supporting leg 7 to remove towards the direction of keeping away from organism 1, when unmanned aerial vehicle descends, backup pad 9 at first contacts with ground, thereby make backup pad 9 rotate around rotating seat 8, when backup pad 9 finally laminates with ground, unmanned aerial vehicle descends the action of accomplishing, at the moment, if the ground shakes, the first spring 11 can deform to achieve a shock absorption effect, and meanwhile, the second spring 27 inside the sliding sleeve 14 can also deform to achieve a shock absorption effect, so that the unmanned aerial vehicle can stably stay on the ground; the unmanned aerial vehicle for surveying and mapping is suitable for the unmanned aerial vehicle, the screw rod 17 is driven to rotate by the driving motor 20, so that the supporting legs 7 are driven to rotate, when the unmanned aerial vehicle flies, the supporting legs 7 are folded at the lower part of the machine body 1, the volume of the whole device is reduced, airflow resistance received during flying is reduced, flying speed is improved, flying energy consumption is reduced, endurance of the whole device can be improved, and the unmanned aerial vehicle is suitable for popularization and use.
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. The utility model provides an unmanned aerial vehicle for surveying and mapping aerial photography, includes organism (1), the front and back both sides of organism (1) are equipped with first fixed plate (2), the tip of first fixed plate (2) is equipped with dwang (3), the top of dwang (3) is rotated and is connected flabellum (4), a serial communication port, the lower surface middle part of organism (1) is equipped with driving motor (20), the output shaft fixed connection first band pulley (21) of driving motor (20), first band pulley (21) passes through belt (22) and connects second band pulley (23), the middle part of second band pulley (23) fixed connection main shaft (24), both ends are equipped with first bevel gear (19) about main shaft (24), second bevel gear (18) is connected in the meshing of both sides around first bevel gear (19), the one end that is close to main shaft (24) of second bevel gear (18) fixed connection lead screw (17), the middle part of the middle part threaded connection nut (16) of lead screw (17, the lower part of nut (16) rotates the upper end of connecting sliding sleeve (14), the upper end of the lower part sliding connection slide bar (13) of sliding sleeve (14), and the lower extreme of slide bar (13) rotates the middle part of connecting supporting leg (7), and the lower extreme of supporting leg (7) is equipped with rotates seat (8), rotates the lower part of seat (8) and rotates and connect backup pad (9), the upper end of supporting leg (7) is rotated and is connected fixed block (6), the lower surface of the upper portion fixed connection organism (1) of fixed block (6).
2. Unmanned aerial vehicle for surveying and mapping of claim 1, characterized in that the lower part of the supporting leg (7) is provided with a limiting plate (10), and a first spring (11) is provided between limiting plate (10) and supporting plate (9).
3. Unmanned aerial vehicle for surveying and mapping of claim 1, wherein the body (1) is provided with third fixing plates (25) on left and right sides of the lower surface, and the third fixing plates (25) are rotatably connected with left and right sides of the main shaft (24).
4. The unmanned aerial vehicle for surveying and mapping of aerial photography according to claim 1, wherein the lower surface of the body (1) is provided with second fixing plates (15) at the left and right ends, and the second fixing plates (15) are rotatably connected with the front and rear sides of the screw rod (17).
5. Unmanned aerial vehicle for surveying and mapping according to claim 1, characterized in that the inside of the sliding sleeve (14) is provided with a sliding cavity (26), the sliding cavity (26) is slidably connected with a sliding plate (28), and the middle part of the sliding plate (28) is fixedly connected with the end of the sliding rod (13).
6. Unmanned aerial vehicle for surveying and mapping according to claim 5, characterized in that a second spring (27) is provided between the sliding plate (28) and the sliding chamber (26).
7. Unmanned aerial vehicle for surveying and mapping according to claim 1, characterized in that the left end of the body (1) is provided with a camera (5).
8. Unmanned aerial vehicle for surveying and mapping of claim 1, characterized in that the right end of the body (1) is provided with a battery (12), the battery (12) being detachably connected to the inside of the body (1).
CN202010801298.1A 2020-08-11 2020-08-11 Be used for surveying and mapping unmanned aerial vehicle that takes photo by plane Withdrawn CN111874223A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010801298.1A CN111874223A (en) 2020-08-11 2020-08-11 Be used for surveying and mapping unmanned aerial vehicle that takes photo by plane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010801298.1A CN111874223A (en) 2020-08-11 2020-08-11 Be used for surveying and mapping unmanned aerial vehicle that takes photo by plane

Publications (1)

Publication Number Publication Date
CN111874223A true CN111874223A (en) 2020-11-03

Family

ID=73203623

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010801298.1A Withdrawn CN111874223A (en) 2020-08-11 2020-08-11 Be used for surveying and mapping unmanned aerial vehicle that takes photo by plane

Country Status (1)

Country Link
CN (1) CN111874223A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113236941A (en) * 2021-05-17 2021-08-10 广东电网有限责任公司 Anti-toppling device and electric power base station
CN113277075A (en) * 2021-07-02 2021-08-20 宁波阿瑞斯自动化技术有限公司 Collapsible many rotor unmanned aerial vehicle
CN113879554A (en) * 2021-11-04 2022-01-04 山东建筑大学 Camera lens adjustment mechanism is used in unmanned aerial vehicle survey and drawing
CN116080943A (en) * 2023-03-13 2023-05-09 余涛 Highway inspection unmanned aerial vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113236941A (en) * 2021-05-17 2021-08-10 广东电网有限责任公司 Anti-toppling device and electric power base station
CN113277075A (en) * 2021-07-02 2021-08-20 宁波阿瑞斯自动化技术有限公司 Collapsible many rotor unmanned aerial vehicle
CN113879554A (en) * 2021-11-04 2022-01-04 山东建筑大学 Camera lens adjustment mechanism is used in unmanned aerial vehicle survey and drawing
CN113879554B (en) * 2021-11-04 2023-07-07 山东建筑大学 Unmanned aerial vehicle survey and drawing is with camera lens adjustment mechanism
CN116080943A (en) * 2023-03-13 2023-05-09 余涛 Highway inspection unmanned aerial vehicle

Similar Documents

Publication Publication Date Title
CN111874223A (en) Be used for surveying and mapping unmanned aerial vehicle that takes photo by plane
CN106892097B (en) A kind of vehicle-mounted unmanned aerial vehicle for road condition monitoring
CN210852883U (en) Four rotor unmanned aerial vehicle of collapsible arm
CN211167458U (en) Remote control unmanned aerial vehicle high altitude anti-wind anti-shake device
CN211618110U (en) Diaxon VTOL unmanned aerial vehicle
CN213892889U (en) Optical lens for unmanned aerial vehicle
CN205059986U (en) Glide flies aircraft that wafts
CN215285259U (en) Unmanned aerial vehicle is used in specialty inspection
CN210822779U (en) Parachute device for preventing unmanned aerial vehicle from being out of control and crashing
CN213649889U (en) Unmanned aerial vehicle
CN211630857U (en) Unmanned aerial vehicle mows
CN209336998U (en) A kind of unmanned plane and its system of taking photo by plane
CN205906229U (en) Unmanned aerial vehicle with multiple rotor wings
CN210133299U (en) Unmanned aerial vehicle carrying type high-altitude emergency searchlighting device
CN213502878U (en) Unmanned aerial vehicle stabilizer blade structure that rises and falls
CN111661318A (en) Unmanned aerial vehicle buffering landing gear
CN212448120U (en) Unmanned aerial vehicle is used in plant protection reconnaissance convenient to change battery
CN209795817U (en) Unmanned aerial vehicle undercarriage with stabilizer blade structure
CN214084723U (en) Novel unmanned aerial vehicle horn subassembly
CN220243573U (en) Unmanned aerial vehicle with protection architecture
CN215399357U (en) Remote control unmanned aerial vehicle based on zigBee
CN214608078U (en) Novel be used for topography survey's unmanned vehicles aerial photograph device
CN211685649U (en) Aircraft with good protection effect
CN211364985U (en) Integrative multipurpose diaxon cloud platform unmanned aerial vehicle with two three-dimensional cameras
CN217496922U (en) Commodity circulation goods fixing device for unmanned aerial vehicle

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
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20201103