CN205707301U - A kind of pulp distance varying mechanism - Google Patents
A kind of pulp distance varying mechanism Download PDFInfo
- Publication number
- CN205707301U CN205707301U CN201620333982.0U CN201620333982U CN205707301U CN 205707301 U CN205707301 U CN 205707301U CN 201620333982 U CN201620333982 U CN 201620333982U CN 205707301 U CN205707301 U CN 205707301U
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- oar
- axle
- varying mechanism
- distance varying
- pulp distance
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Abstract
This utility model belongs to aircraft feather technical field, discloses a kind of pulp distance varying mechanism.Pulp distance varying mechanism is arranged on rotating oar axle, and the upper end of oar axle is provided with propeller hub, and the circumference of propeller hub is provided with the clamping dead axle of multiple oar, and the oar that the clamping dead axle of each oar is provided with for fixed blades by bearing presss from both sides；Pulp distance varying mechanism includes being set in the rotation that can isolate oar axle outside oar axle, and the isolated location that can move up and down along oar axle, and isolated location comprises rotary inner ring and do not rotates outer ring；Being evenly arranged with the oar folder pull bar of multiple corresponding connection of axle sidepiece with oar folder on rotary inner ring, the axle sidepiece that oar folder pull bar and rotary inner ring, oar press from both sides is and is rotationally connected；Do not rotate and on outer ring, be provided with the driver element driving isolated location to move up and down in overall.This pulp distance varying mechanism solves the problem that the dynamic rotorcraft control system requirement dynamical system response speed of oil present in prior art is sufficiently fast；And this apparatus structure is simple, easy to use.
Description
Technical field
This utility model belongs to aircraft feather technical field, particularly to a kind of pulp distance varying mechanism.
Background technology
Airscrewpiston i.e. propeller blade rotates a circle the height of formed spiral, according to air force
The knowledge learned, within the specific limits, pitch is linear with the wing setting angle of propeller blade.Root
According to aerodynamic knowledge, the different wing setting angle of propeller blade correspond to different lift systems
Number, say, that under identical rotating speed, different wing setting angles can make propeller produce size
Different lift, even negative lift.Theoretically, as long as making the change speed of wing setting angle enough
The most just can realize the control to aircraft flight attitude.
The flight attitude of rotor craft is that the lift of each propeller by regulating each rotor is controlled
System, for electronic rotor craft, directly change the rotating speed of brushless electric machine, and response speed
Spend sufficiently fast.But for the dynamic gyroplane of oil, its dynamical system is a petrol engine, passes through transmission
Power is assigned on each propeller of each rotor by system, if realized by mechanical variable speed device
Adjustable screw oar lift, should increase too much weight, and response speed not reach requirement, even if
Using a petrol engine as dynamical system on each rotor, the response of petrolic throttle is fast
Degree is the farthest not by far up to the mark.Therefore, for oil moves rotor craft, the control of constant pitch variable speed
The feasibility of scheme processed is the least, is more suitable for using the control mode determining rotating speed feather.
The pitch-changing mechanism of helicopter screw propeller mainly has two functions: one is the blade changing propeller blade
Established angle, adjustable screw oar produces the size of lift；Two is the inclination angle changing oar dish, so that propeller
Rotate the lift produced and produce the component of a horizontal direction, it is achieved the forward direction flight etc. of unmanned plane.For
Rotor wing unmanned aerial vehicle, it is only necessary to change propeller lift size, the control of its flight attitude is by same
Time regulate each rotor the lift of 16 propellers realize.
Utility model content
The purpose of this utility model is to provide a kind of pulp distance varying mechanism, and this pulp distance varying mechanism solves existing skill
Present in art, the dynamic rotorcraft control system of oil requires the problem that dynamical system response speed is sufficiently fast；
And this apparatus structure is simple, easy to use.
For reaching object above, this utility model is achieved by the following technical solutions.
A kind of pulp distance varying mechanism, it is characterised in that: it is arranged on rotating oar axle, edge on described oar axle
Its even circumferential distributing installation has multiple level the most logical on the clamping dead axle of oar, each clamping dead axle of described oar
Cross bearing and the oar folder for fixed blades is installed；
Pulp distance varying mechanism include can along oar axle move up and down isolated location, described isolated location include with
The rotary inner ring of described oar axle synchronous axial system and outside being arranged on not rotating outside described rotary inner ring
Circle, described rotary inner ring connects and has multiple oar to press from both sides pull bar, and the other end correspondence of described each oar folder pull bar is even
Being connected on the sidepiece of each oar folder, the axle sidepiece that described oar folder pull bar and rotary inner ring, oar press from both sides is and is rotationally connected；
Described do not rotate on outer ring connect have driver element, described driver element to be used for driving isolated location edge
When oar axle moves up and down, drive each oar folder pull bar to synchronize to move up and down, and then drive each oar folder clamping around oar
Fixed-axis rotation.
The feature of technique scheme and further improvement:
Further, described driver element includes the power source being fixed on horn, and described power source sets
Being equipped with the rocking arm that can rotate around it, the outer end of described rocking arm is rotatably connected to multiple pitch-change-link, described change
Away from pull bar with do not rotate outer ring and be connected.
Further, described pitch-change-link is two, passes through rudder between described rocking arm and two pitch-change-links
Machine rocking arm connecting rod connects, and said two pitch-change-link correspondence is connected to the two ends of steering wheel rocking arm connecting rod,
Described rocking arm is connected to the middle part of steering wheel rocking arm connecting rod.
Further, horn is provided with the through hole passed for pitch-change-link, the medial wall of described through hole with
Linear bearing it is provided with between pitch-change-link.
Further, described rotary inner ring and do not rotate between outer ring by bearing isolation rotate, described turn
Move and be provided with sliding bearing between inner ring and oar axle.
Further, the clamping dead axle of described oar is connected by propeller hub between oar axle, the clamping dead axle of described oar
One end be set to helicitic texture and be connected with propeller hub, its other end is pressed from both sides with oar by bearing and is connected.
Further, the top of described propeller hub is provided with fairing cap.
Further, described oar axle is provided with the spacing of restriction isolated location up and down motion position limit
Block.
Further, the clamping dead axle of described oar, oar folder is four, and described oar folder pull bar corresponds to four.
Pulp distance varying mechanism of the present utility model, is moved up and down in overall by drive unit drives isolated location,
By isolated location, the rotation of oar axle is isolated with driver element again, then by moving down on oar folder pull bar
The dynamic rotation promoting oar folder, thus realize the angle adjustment of blade, this pulp distance varying mechanism uses steering wheel conduct
Power source solves oil dynamic rotorcraft control system requirement dynamical system sound present in prior art
Answer the problem that speed is sufficiently fast；And this apparatus structure is simple, easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of pulp distance varying mechanism of the present utility model；
Fig. 2 is the perspective view of Fig. 1；
In figure: 1, oar folder；2, fairing cap；3, nose spinner；4, propeller hub；5, oar axle；6, slide
Bearing；7, copper bush；8, steering wheel rocking arm connecting rod；9, rocking arm；10, steering wheel；11, displacement draws
Bar；12, clip；14, outer ring is not rotated；15, rotary inner ring；16, oar folder pull bar；17、
Propeller hub fixes bolt；18, the clamping dead axle of oar；19, linear bearing；20, horn upper plate；21, horn
Lower plate；22 lower limit platforms.
Detailed description of the invention
With detailed description of the invention, this utility model is described in detail below in conjunction with the accompanying drawings.
With reference to Fig. 1, Fig. 2, for the structural representation of a kind of pulp distance varying mechanism of the present utility model；This change
Pitch mechanism is arranged on rotating oar axle 5, and oar axle 5 has multiple along its even circumferential distributing installation
Level is all provided with for fixing oar by bearing on the clamping dead axle of oar 18, the clamping dead axle of each oar 18
The oar folder 1 of leaf.Oar folder 1 can rotate relative to the clamping dead axle of oar 18, thus drives blade to rotate.
Pulp distance varying mechanism includes the isolated location that can move up and down along oar axle 5, and isolated location includes and oar
The rotary inner ring 15 of axle 5 synchronous axial system and be arranged on and do not rotate outer ring 14 outside rotary inner ring 15,
Connecting on rotary inner ring 15 and have multiple oar to press from both sides pull bar 16, the other end correspondence of each oar folder pull bar 16 is connected to
The sidepiece of each oar folder 1, in the present embodiment, the other end correspondence of oar folder pull bar 16 is connected to each oar folder 1
Axial sidepiece, oar folder pull bar 16 and rotary inner ring 15, oar press from both sides the axle sidepiece of 1 and are and are rotationally connected.
Not rotating to connect on outer ring 14 has driver element, driver element to be used for driving isolated location along oar axle 5
During up and down motion, drive each oar folder pull bar 16 to synchronize to move up and down, and then drive each oar folder 1 to press from both sides around oar
Fixing axle 18 rotates, thus drives blade to rotate and realize feather.
In the present embodiment, the clamping dead axle of oar 18, oar folder 1 is four, corresponding oar folder pull bar 16
Also it is four.
Driver element includes the power source being fixed on horn, and power source is provided with shaking of can rotating around it
Arm 9, the outer end of rocking arm 9 is rotatably connected to multiple pitch-change-link 11, pitch-change-link 11 with do not rotate outside
Circle 14 connection.Power source uses steering wheel 10.Swung by steering wheel 10 band motion rocker arm 9, the pendulum of rocking arm 9
Dynamic promotion pitch-change-link 11 moves up and down, thus promotes isolated location to move up and down in overall.
Pitch-change-link 11 is two, is connected by steering wheel rocking arm between rocking arm 9 with two pitch-change-links 11
Bar 8 connects, and two pitch-change-link 11 correspondences are connected to the two ends of steering wheel rocking arm connecting rod 8, rocking arm 9
It is connected to the middle part of steering wheel rocking arm connecting rod 8.Two pitch-change-links 11 can balance thrust, prevent every
Stuck from unit.
The through hole passed for pitch-change-link 11, the medial wall of through hole and pitch-change-link 11 it is provided with on horn
Between be provided with linear bearing 19, horn includes horn upper plate 20 and horn lower plate 21, in the present embodiment
It is provided with linear bearing 19 in horn upper plate 20 and horn lower plate 21 are provided with through hole and through hole.
Through hole and installation linear bearing 19 within it are that pitch-change-link 11 provides the effect guided, and prevent two
The isolated location that unbalance stress between individual pitch-change-link 11 causes stuck.
Rotary inner ring 15 and not rotating is rotated by bearing isolation between outer ring 14, rotary inner ring 15 with
Being vertically disposed with sliding bearing 6 and copper bush 7 between oar axle 5, copper bush 7 is a kind of sliding bearing,
When machinery rotation ratio relatively low, clearance requirement comparatively speaking compare the highest in the environment of can carry out generation with copper bush
Operate for rolling bearing.Copper bush has wearability, it is possible to the time of use is more permanent.Slide
Bearing 6 decreases the friction between rotary inner ring 15 and oar axle 5, prevents rotary inner ring 15 and oar axle 5
Between the generation of stuck phenomenon.
Being connected by propeller hub 4 between the clamping dead axle of oar 18 and oar axle 5, one end of the clamping dead axle of oar 18 sets
Being set to helicitic texture be connected with propeller hub 4, its other end is connected with oar folder 1 by bearing.
The top of propeller hub 4 is provided with fairing cap 2.Because blade job demand good flow field environment, and
Propeller hub 4 upper end does not meets pneumatic requirement, so needing to carry out rectification plus fairing cap 2.
The limited block limiting isolated location up and down motion position limit it is provided with, in the present embodiment on oar axle 5
Limited more than the diameter of oar axle 5 by the diameter in the axle portion of propeller hub 4 and most go up movement position, by oar
Arrange lower limit platform 22 on axle 5 to limit and most descend movement position.
Pulp distance varying mechanism of the present utility model, is moved up and down in overall by drive unit drives isolated location,
By isolated location, the rotation of oar axle 5 is isolated with driver element again, then by oar folder pull bar 16
Moving up and down the rotation promoting oar folder 1, thus realize the angle adjustment of blade, this pulp distance varying mechanism uses
Steering wheel solves the dynamic rotorcraft control system requirement of oil present in prior art as power source and moves
The problem that Force system response speed is sufficiently fast；And this apparatus structure is simple, easy to use.
Although being described embodiment of the present utility model above in association with accompanying drawing, but this practicality is new
Type is not limited to above-mentioned specific embodiments and applications field, and above-mentioned specific embodiments is only
Schematically, directiveness rather than restrictive.Those of ordinary skill in the art is in description
Under enlightenment, in the case of without departing from this utility model scope of the claimed protection, it is also possible to make
A variety of forms, these belong to the row of this utility model protection.
Claims (9)
1. a pulp distance varying mechanism, it is characterised in that: it is arranged on rotating oar axle (5), described
Multiple level is had to the clamping dead axle of oar (18), Mei Gesuo along its even circumferential distributing installation on oar axle (5)
State the oar being all provided with for fixed blades by bearing on the clamping dead axle of oar (18) and press from both sides (1)；
Pulp distance varying mechanism includes the isolated location that can move up and down, described isolated location along oar axle (5)
Including with the rotary inner ring (15) of described oar axle (5) synchronous axial system and be arranged on described rotary inner ring
(15) outside not rotating outer ring (14), the upper connection of described rotary inner ring (15) has multiple oar folder to draw
Bar (16), the other end correspondence of described each oar folder pull bar (16) is connected to the sidepiece of each oar folder (1),
The axle sidepiece that described oar folder pull bar (16) presss from both sides (1) with rotary inner ring (15), oar is and is rotationally connected；
Described do not rotate the upper connection in outer ring (14) and have driver element, described driver element to be used for driving isolation
Unit along oar axle (5) move up and down time, drive each oar folder pull bar (16) synchronize move up and down, and then
Each oar folder (1) is driven to rotate around the clamping dead axle of oar (18).
2. a kind of pulp distance varying mechanism as claimed in claim 1, it is characterised in that: described driver element
Including the power source being fixed on horn, described power source is provided with the rocking arm (9) that can rotate around it,
The outer end of described rocking arm (9) is rotatably connected to multiple pitch-change-link (11), described pitch-change-link (11)
It is connected with not rotating outer ring (14).
3. a kind of pulp distance varying mechanism as claimed in claim 2, it is characterised in that: described pitch-change-link
(11) it is two, between described rocking arm (9) and two pitch-change-links (11) by steering wheel rocking arm even
Extension bar (8) connects, and said two pitch-change-link (11) correspondence is connected to steering wheel rocking arm connecting rod (8)
Two ends, described rocking arm (9) is connected to the middle part of steering wheel rocking arm connecting rod (8).
4. a kind of pulp distance varying mechanism, it is characterised in that: set on horn
Be equipped with for pitch-change-link (11) through hole that passes, the medial wall of described through hole and pitch-change-link (11) it
Between be provided with linear bearing (19).
5. a kind of pulp distance varying mechanism as described in any one of claims 1 to 3, it is characterised in that: described
Rotary inner ring (15) and do not rotate between outer ring (14) by bearing isolation rotate, described rotary inner ring
And between oar axle (5), be provided with sliding bearing (6) (15).
6. a kind of pulp distance varying mechanism as described in any one of claims 1 to 3, it is characterised in that: described
It is connected by propeller hub (4) between the clamping dead axle of oar (18) with oar axle (5), the clamping dead axle of described oar (18)
One end be set to helicitic texture and be connected with propeller hub (4), its other end is by bearing with oar folder (1) even
Connect.
7. a kind of pulp distance varying mechanism as described in any one of claim 6, it is characterised in that: described oar
The top of hub (4) is provided with fairing cap (2).
8. a kind of pulp distance varying mechanism as described in any one of claims 1 to 3, it is characterised in that: described
The limited block limiting isolated location up and down motion position limit it is provided with on oar axle (5).
9. a kind of pulp distance varying mechanism as described in any one of claims 1 to 3, it is characterised in that: described
The clamping dead axle of oar (18), oar folder (1) are four, and described oar folder pull bar (16) corresponds to four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620333982.0U CN205707301U (en) | 2016-04-20 | 2016-04-20 | A kind of pulp distance varying mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620333982.0U CN205707301U (en) | 2016-04-20 | 2016-04-20 | A kind of pulp distance varying mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205707301U true CN205707301U (en) | 2016-11-23 |
Family
ID=57298020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620333982.0U Active CN205707301U (en) | 2016-04-20 | 2016-04-20 | A kind of pulp distance varying mechanism |
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| CN (1) | CN205707301U (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106553768A (en) * | 2016-11-30 | 2017-04-05 | 中国直升机设计研究所 | A kind of main oar steering wheel benchmark method of adjustment |
| CN106741857A (en) * | 2017-03-02 | 2017-05-31 | 南京那尔朴电子有限公司 | A kind of propeller that can be adjusted with thrust |
| CN106741929A (en) * | 2017-01-19 | 2017-05-31 | 西安天问智能科技有限公司 | Pitch-variable system and rotor craft |
| CN106741860A (en) * | 2016-12-30 | 2017-05-31 | 中航维拓（天津）科技有限公司 | A kind of oil based on composite moves many rotor flexible rotor systems |
| CN106741859A (en) * | 2016-12-12 | 2017-05-31 | 惠阳航空螺旋桨有限责任公司 | The constantly monitoring device of propeller blade angle |
| CN106892094A (en) * | 2017-01-22 | 2017-06-27 | 南京航空航天大学 | A kind of individually controllable four rotor unmanned aircraft of space six degree of freedom and its control method |
| CN107856854A (en) * | 2017-09-22 | 2018-03-30 | 珠海佰家科技有限公司 | A kind of unmanned plane propeller and its unmanned plane |
| CN108032993A (en) * | 2017-12-15 | 2018-05-15 | 惠阳航空螺旋桨有限责任公司 | A kind of narrow spacing locks stop device |
| CN108263610A (en) * | 2018-03-14 | 2018-07-10 | 长沙市云智航科技有限公司 | A kind of tilting rotor for the vehicle that carries people to fly |
| CN108313284A (en) * | 2018-03-14 | 2018-07-24 | 长沙市云智航科技有限公司 | Rotor for the vehicle that carries people to fly |
| CN108372927A (en) * | 2018-02-07 | 2018-08-07 | 渤海大学 | Six degree of freedom based on displacement paddle controls eight-rotary wing aircraft entirely |
| CN109278985A (en) * | 2018-11-20 | 2019-01-29 | 西安君晖航空科技有限公司 | A kind of variable propeller pitch device and its installation method |
| CN109436299A (en) * | 2018-11-06 | 2019-03-08 | 珠海隆华直升机科技有限公司 | Helicopter tail rotor star pitch-changing mechanism and helicopter |
| CN109466746A (en) * | 2018-11-06 | 2019-03-15 | 珠海隆华直升机科技有限公司 | Helicopter tail rotor displacement drive system and helicopter |
| CN109502010A (en) * | 2018-11-06 | 2019-03-22 | 珠海隆华直升机科技有限公司 | Helicopter tail rotor displacement displacement disc assembly and helicopter |
| CN110758718A (en) * | 2019-12-05 | 2020-02-07 | 江西洪都航空工业集团有限责任公司 | Variable pitch propeller and variable pitch propeller system of small aircraft |
| CN112389636A (en) * | 2020-11-10 | 2021-02-23 | 成都云尘科技有限责任公司 | Built-in integral type propeller hub and control method |
| WO2023142204A1 (en) * | 2022-01-27 | 2023-08-03 | 南京航空航天大学 | Helicopter rotor manipulation device based on pitch varying of hydraulic torsion tube |
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2016
- 2016-04-20 CN CN201620333982.0U patent/CN205707301U/en active Active
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106553768B (en) * | 2016-11-30 | 2018-10-02 | 中国直升机设计研究所 | A kind of main paddle steering engine benchmark method of adjustment |
| CN106553768A (en) * | 2016-11-30 | 2017-04-05 | 中国直升机设计研究所 | A kind of main oar steering wheel benchmark method of adjustment |
| CN106741859A (en) * | 2016-12-12 | 2017-05-31 | 惠阳航空螺旋桨有限责任公司 | The constantly monitoring device of propeller blade angle |
| CN106741860B (en) * | 2016-12-30 | 2023-09-29 | 重庆驼航科技有限公司 | Oil-driven multi-rotor flexible rotor system based on composite material |
| CN106741860A (en) * | 2016-12-30 | 2017-05-31 | 中航维拓（天津）科技有限公司 | A kind of oil based on composite moves many rotor flexible rotor systems |
| CN106741929A (en) * | 2017-01-19 | 2017-05-31 | 西安天问智能科技有限公司 | Pitch-variable system and rotor craft |
| CN106892094A (en) * | 2017-01-22 | 2017-06-27 | 南京航空航天大学 | A kind of individually controllable four rotor unmanned aircraft of space six degree of freedom and its control method |
| CN106741857A (en) * | 2017-03-02 | 2017-05-31 | 南京那尔朴电子有限公司 | A kind of propeller that can be adjusted with thrust |
| CN107856854A (en) * | 2017-09-22 | 2018-03-30 | 珠海佰家科技有限公司 | A kind of unmanned plane propeller and its unmanned plane |
| CN108032993A (en) * | 2017-12-15 | 2018-05-15 | 惠阳航空螺旋桨有限责任公司 | A kind of narrow spacing locks stop device |
| CN108032993B (en) * | 2017-12-15 | 2024-04-09 | 惠阳航空螺旋桨有限责任公司 | Small-distance lock stop device |
| CN108372927A (en) * | 2018-02-07 | 2018-08-07 | 渤海大学 | Six degree of freedom based on displacement paddle controls eight-rotary wing aircraft entirely |
| CN108313284A (en) * | 2018-03-14 | 2018-07-24 | 长沙市云智航科技有限公司 | Rotor for the vehicle that carries people to fly |
| CN108263610A (en) * | 2018-03-14 | 2018-07-10 | 长沙市云智航科技有限公司 | A kind of tilting rotor for the vehicle that carries people to fly |
| CN109436299A (en) * | 2018-11-06 | 2019-03-08 | 珠海隆华直升机科技有限公司 | Helicopter tail rotor star pitch-changing mechanism and helicopter |
| CN109466746A (en) * | 2018-11-06 | 2019-03-15 | 珠海隆华直升机科技有限公司 | Helicopter tail rotor displacement drive system and helicopter |
| CN109502010A (en) * | 2018-11-06 | 2019-03-22 | 珠海隆华直升机科技有限公司 | Helicopter tail rotor displacement displacement disc assembly and helicopter |
| CN109436299B (en) * | 2018-11-06 | 2023-11-07 | 珠海隆华直升机科技有限公司 | Star-shaped pitch-changing mechanism of helicopter tail rotor and helicopter |
| CN109278985A (en) * | 2018-11-20 | 2019-01-29 | 西安君晖航空科技有限公司 | A kind of variable propeller pitch device and its installation method |
| CN109278985B (en) * | 2018-11-20 | 2023-09-29 | 西安君晖航空科技有限公司 | Pitch variable device and installation method thereof |
| CN110758718A (en) * | 2019-12-05 | 2020-02-07 | 江西洪都航空工业集团有限责任公司 | Variable pitch propeller and variable pitch propeller system of small aircraft |
| CN112389636B (en) * | 2020-11-10 | 2022-12-09 | 成都云尘科技有限责任公司 | Built-in integral type propeller hub and control method |
| CN112389636A (en) * | 2020-11-10 | 2021-02-23 | 成都云尘科技有限责任公司 | Built-in integral type propeller hub and control method |
| WO2023142204A1 (en) * | 2022-01-27 | 2023-08-03 | 南京航空航天大学 | Helicopter rotor manipulation device based on pitch varying of hydraulic torsion tube |
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Effective date of registration: 20170112 Address after: 710077 Xi'an, Lianhu District, Shaanxi Road, No. 32 Patentee after: Cheng Jing Patentee after: Lv Jingzhao Patentee after: Zuo Panfei Patentee after: Wang Xinsheng Patentee after: Liu Xilong Patentee after: Feng Linzhi Patentee after: Liu Yazhuo Patentee after: Li Haorong Address before: 710077 Xi''an, Lianhu District, Shaanxi Road, No. 32 Patentee before: Cheng Jing |
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Effective date of registration: 20180930 Address after: 5 floor, building 2, 6 Rongxin Road, Yanta District, Xi'an, Shaanxi Patentee after: Xi'an Tianwen Intelligent Technology Co. Ltd. Address before: 710077 No. 32 labor South Road, Lianhu District, Xi'an, Shaanxi Co-patentee before: Lv Jingzhao Patentee before: Cheng Jing Co-patentee before: Zuo Panfei Co-patentee before: Wang Xinsheng Co-patentee before: Liu Xilong Co-patentee before: Feng Linzhi Co-patentee before: Liu Yazhuo Co-patentee before: Li Haorong |
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