CN107994320B - Vehicle-mounted equipment antenna combination protection casing - Google Patents
Vehicle-mounted equipment antenna combination protection casing Download PDFInfo
- Publication number
- CN107994320B CN107994320B CN201610901989.2A CN201610901989A CN107994320B CN 107994320 B CN107994320 B CN 107994320B CN 201610901989 A CN201610901989 A CN 201610901989A CN 107994320 B CN107994320 B CN 107994320B
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- hook
- protective cover
- frame
- scraping
- upper cover
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
- H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Details Of Aerials (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The invention discloses a vehicle-mounted equipment antenna combined protective cover which comprises four side frames, namely a front side frame, a rear side frame, a left side frame and a right side frame, an upper cover, a protective cover mounting flange and positioning sealing frames, wherein the positioning sealing frames are fixed on the protective cover mounting flange, the four side frames are fixedly connected with the protective cover mounting flange along four edges of the positioning sealing frames through spring hinges and can realize overturning actions in horizontal and vertical positions around the spring hinges, and the adjacent side frames, the upper cover and the left and right side frames are connected through quick clamps. The invention realizes the original-place expansion of the protective cover in the limited space of the car roof, thereby not only avoiding the shielding of the protective cover on the antenna, but also avoiding the integral moving of the protective cover between the car roof and the ground, and a celebrity can finish the dismounting operation of the protective cover, thereby greatly improving the dismounting efficiency of the protective cover.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted equipment antenna protection, in particular to a combined protective cover for a vehicle-mounted equipment antenna.
Background
In the past, the antenna protective cover of the vehicle-mounted equipment is placed on the roof of a vehicle, and is mostly in a spherical, helmet-shaped or cylindrical integral thin-shell structure, and the antenna protective cover is covered on the antenna in a buckling manner, so that the antenna is protected.
Because the space of the car roof is limited, and the protective cover is usually made higher and larger, in order to avoid the shielding of the protective cover on the useful information of the antenna, when the antenna works, the protective cover needs to be carried to the ground from the car roof; after the antenna works, the protective cover needs to be moved back to the roof from the ground to complete installation and fixation.
The antenna protective cover with the existing integral structure has the following defects:
1. generally, the volume of an antenna protective cover with an integral structure is made to be larger, and the protective cover is required to be unfolded in situ in a limited space of a vehicle roof, so that the antenna is necessarily shielded, and the normal work of the antenna is influenced, therefore, the protective cover is generally moved up and down from the vehicle roof and the ground, which is a common weakness of the traditional protective cover;
2. in a field environment, people need to stand on the roof when the antenna protective cover is disassembled, assembled and moved, and the protective cover is more difficult to integrally move and has potential safety hazards when the severe weather of storm occurs;
3. the disassembly, assembly and movement of the protective cover can be completed by the cooperation of several persons, which is time-consuming, labor-consuming, low in efficiency and difficult to adapt to the requirements of convenient and quick operation of equipment.
Disclosure of Invention
The invention aims to realize the in-situ expansion of the protective cover in the limited space of the car roof under the condition of not shielding the work of the antenna, thereby avoiding the integral moving of the antenna protective cover between the car roof and the ground; the disassembly and assembly efficiency of the protective cover is improved to the maximum extent; and the effective protection of the antenna is realized.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a mobile unit antenna combination protection casing, includes four side frames in front, back, left and right, upper cover, protection casing mounting flange and location sealing frame, the location sealing frame is fixed on protection casing mounting flange, and four sides frames pass through spring hinge and protection casing mounting flange fixed connection along the four limits of location sealing frame to can realize the upset action of level, vertical position around the spring hinge, between the adjacent side frame, the upper cover passes through the active grab with left and right side frame and is connected, is equipped with on the active grab of connecting left and right side frame and upper cover and prevents the hook component, preceding, left side frame and back, all be equipped with between the right side frame and prevent the hook component.
Preferably, the upper cover is buckled on the four side frames which are vertically erected, downward flanges are arranged at the edges of the upper cover, steps which are recessed inwards are arranged on the left side surface and the right side surface of the outer portion of the upper cover, a sealing groove is arranged on the contact surface of the inner side of the upper cover and the side frames, and ethylene-propylene-diene monomer sealing strips are pasted in the sealing groove.
Preferably, the quick clamp comprises a quick clamp flange and a quick clamp hook seat, the adjacent side frames are fixed through the quick clamp flange and are arranged on the inner side of one side frame, the quick clamp hook seat is arranged on the inner side of the other adjacent side frame, the quick clamp mounting surfaces of the adjacent side frames are positioned on the same plane, and the adjacent side frames are fixedly connected through the tensioning action of the quick clamp; fixed between left and right side face frame and the upper cover, through the mounting of quick-operation clamp flange on left and right side face frame, its hook piece is installed in the outside left and right side of upper cover to inboard recessed step department for left and right side face frame outer end face and the step of upper cover inboard recessed are located the coplanar, and left and right side face frame passes through quick-operation clamp's take-up effect fixed connection with the upper cover.
Preferably, prevent the hook subassembly including prevent scraping the hook, prevent scraping the hook seat, prevent scraping the hook round pin axle, prevent scraping hook torsional spring, split pin, prevent scraping the hook round pin axle and pass and prevent scraping the hook, prevent scraping the hook seat, prevent scraping the hook torsional spring, the split pin is fixed prevents scraping the hook round pin axle.
Preferably, one arm of the anti-scraping hook torsion spring is hooked at the anti-scraping hook seat, and the other arm abuts against the vertical surface of the anti-scraping hook.
Preferably, prevent wind the hook subassembly and include double-screw bolt A, prevent wind hook and two double-screw bolts B, double-screw bolt A, prevent wind hook and double-screw bolt B install at a side frame, install another double-screw bolt B on adjacent side frame, prevent that wind hook's one end is equipped with the opening slot of two opposite directions, and the other end is long waist shape hole, prevent wind the hook and install on double-screw bolt A through long waist shape hole, prevent that wind hook can slide around the double-screw bolt A in long waist shape is downthehole.
Preferably, the side end faces of the front side frame, the rear side frame and the left side frame are respectively provided with a groove and a boss, the side end faces of the right side frame are all provided with grooves, the grooves and the bosses of the adjacent side frames are arranged in a staggered mode and matched with each other, and ethylene-propylene-diene monomer sealing strips are pasted in the grooves.
Preferably, the location sealing frame is the square frame structure that hot rolling equilateral angle steel processing formed, including horizontal frame and vertical frame, installation thickness is 8 mm's rubber slab between location sealing frame and the protection casing mounting flange.
The antenna protective cover is different from the traditional protective cover overall design idea, creatively adopts a square box split type combined structure, and has the following advantages:
by adopting the split type combined structure, after the protective cover is disassembled, all the components of the protective cover are horizontally arranged on the roof, the original expansion of the protective cover is realized in the limited space of the roof, the shielding of the protective cover on the antenna is avoided, the integral moving of the protective cover between the roof and the ground is also avoided, and the application of the rapid clamp in the fixed connection of each component of the protective cover is realized, so that a celebrity can finish the dismounting operation of the protective cover, and the dismounting efficiency of the protective cover is greatly improved.
Drawings
FIG. 1 is a schematic view of an assembled antenna shield;
FIG. 2 is an expanded view of the side frames;
FIG. 3 is a schematic view of the use of the quick clamp in securing adjacent side frames together;
FIG. 4 is a schematic view of the application of the quick clamp in the fixed connection of the side frame and the upper cover;
FIG. 5 is a schematic view of a scratch hook assembly;
FIG. 6 is a schematic view showing the state of the windproof hook when the side frame is retracted;
FIG. 7 is a schematic view of the side frame in a horizontal spread-out position to prevent the wind from falling off;
FIG. 8 is a schematic view of the seal between adjacent side frames of the shield;
FIG. 9 is a schematic view of the sealing of the upper cover;
fig. 10 is a schematic structural view of the positioning sealing frame.
In the figure: 1 front side frame, 2 rear side frame, 3 left side frame, 4 right side frame, 5 upper covers, 6 location sealing frame, 7 spring hinges, 8 rapid clamp, 9 protection casing mounting flanges, 10 rapid clamp hook seats, 11 rapid clamp flanges, 12 wind-proof hook, 13 wind-proof hook component, 14 concave steps, 15 wind-proof hook, 16 wind-proof hook pin shaft, 17 wind-proof hook torsion spring, 18 wind-proof hook seats, 19 split pins, 20 split grooves, 21 stud A, 22 stud B, 23 ethylene propylene diene monomer sealing strip, 24 grooves, 25 bosses, 26 sealing grooves, 27 horizontal frame, 28 vertical frame.
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.
Fig. 1 shows an assembled state of an antenna protection cover for vehicle-mounted equipment. The antenna protective cover adopts a square box split type combined dismounting structure, and comprises a front side frame 1, a rear side frame 2, a left side frame 3, a right side frame 4, an upper cover 5, a protective cover mounting flange 9 and a positioning sealing frame 6, wherein the positioning sealing frame 6 is fixed on the protective cover mounting flange 9, the four side frames are fixedly connected with the protective cover mounting flange 9 through spring hinges 7 along four edges of the positioning sealing frame 6, horizontal and vertical overturning actions can be realized around the spring hinges 7, the upper cover 5 and the left and right side frames are connected through quick clamps 8, the quick clamps 8 connecting the left and right side frames and the upper cover 5 are provided with anti-scraping hook assemblies 13, and the windproof hook assemblies are respectively arranged between the front and left side frames and between the rear and right side frames.
By adopting the split type combined structure, after the protective cover is disassembled, all the components of the protective cover are flatly placed on the vehicle roof, and the protective cover is unfolded in situ in the limited space of the vehicle roof, so that the protective cover can not only prevent the antenna from being shielded, but also prevent the protective cover from being moved integrally on the vehicle roof and the ground.
Referring to fig. 1, the shield assembling operation is: firstly, vertically erecting four side frames, and connecting and fixing the adjacent side frames by using a quick clamp 8; covering the upper cover 5, and connecting and fixing the upper cover 5 with the left side frame and the right side frame by using a quick clamp 8; finally, the anti-scraping hook 15 is pulled, so that the anti-scraping hook 15 firmly presses the handle of the quick clamp 8.
Referring to fig. 2, the shield deployment operation is: firstly, the scratch-proof hook 15 is poked, the quick clamp 8 connecting the upper cover 5 with the left side frame and the right side frame is opened, the upper cover 5 is taken down, and the vehicle is horizontally placed on the vehicle roof; then, opening the quick clamps 8 connected with the adjacent side frames, and horizontally spreading each side frame on the roof; finally, the two adjacent side frames are fixedly connected together by the windproof hook 12.
The rapid clamp 8 is a rapid locking device, has a self-locking function in a compression state, is simple and rapid to operate, and greatly improves the efficiency of dismounting the protective cover when being applied to the antenna protective cover.
Referring to fig. 3, the use of the quick clamp 8 in the secure attachment of adjacent side frames is illustrated. The quick clamp flange 11 is arranged on the inner side of one side frame, the quick clamp hook seat 10 is arranged on the inner side of the other adjacent side frame, the quick clamp mounting surfaces of the two side frames are positioned on the same plane, and the two side frames are fixedly connected through the tensioning effect of the quick clamp 8.
As shown in fig. 4, the quick clamp flange 11 is installed on the left and right side frames, and its hook is installed at the outer left and right side surfaces of the upper cover 5 toward the inner recessed step 14, so that the outer end surfaces of the side frames and the upper cover 5 toward the inner recessed step 14 are on the same plane, and the fixed connection between the left and right side frames and the upper cover 5 is realized through the quick clamp 8.
Although the quick clamp has a self-locking function, in the process of traveling of a vehicle, the situation that a foreign object such as a tree branch is scraped inevitably occurs, so that the quick clamp 8 connecting the left side surface frame and the right side surface frame with the upper cover 5 can be scraped, and a scraping-preventing hook assembly 13 is added, and is shown in fig. 5, and comprises a scraping-preventing hook 15, a scraping-preventing hook seat 18, a scraping-preventing hook pin shaft 16, a scraping-preventing hook torsion spring 17 and a split pin 19. The anti-scraping hook pin shaft 16 penetrates through the anti-scraping hook 15, the anti-scraping hook seat 18 and the anti-scraping hook torsion spring 17, the anti-scraping hook pin shaft 16 is fixed by the cotter pin 19, and all parts are connected into a whole.
The anti-scraping hook torsion spring 17 is an N VI type torsion spring, one arm of the torsion spring is hooked at the anti-scraping hook seat 18, the other arm of the torsion spring is propped against the vertical surface of the anti-scraping hook 15, the torsion spring is pre-tightened to a certain degree at the moment, and the anti-scraping hook 15 firmly presses the quick clamp handle by depending on the restoring action of the torsion spring to prevent the quick clamp 8 from being lifted.
The use of the scratch-resistant hook component 13 plays a role in double insurance in the fixed connection of the left and right side frames and the upper cover of the protective cover.
When the vehicle-mounted equipment antenna works, the four side frames of the protective cover need to be horizontally unfolded, and strong wind can be blown up at any time in field operation, so that the wind-proof hook assembly is added for preventing the protective cover and the equipment from being damaged. As shown in fig. 6, the assembly consists of a stud a 21, a wind hook 12 and two studs B22. The stud a 21, the wind-proof hook 12, and one stud B22 are attached to one side frame, and the other stud B22 is attached to the adjacent side frame. One end of the windproof hook 12 is designed into two opening grooves 20 in opposite directions, and the other end is designed into a long waist-shaped hole. The windproof hook is arranged on the stud A21 through the long kidney-shaped hole and can slide back and forth in the long kidney-shaped hole along the stud A21. Fig. 6 shows the protective cover side frame in the retracted state, and the wind-proof hook is hung on the stud B22 of the same side frame.
In fig. 7, when the side frames of the hood are horizontally spread, the wind-break hook 12 is rotated about the stud a 21, the wind-break hook opening enters the stud B22, and the wind-break hook 12 is pushed along the long kidney-shaped hole, so that the opening groove 20 is hooked on the stud B22 of the adjacent side frame. Therefore, the two side frames connected together can resist the disturbance of strong wind, and the effective protection of the antenna equipment is realized.
The structures are combined together to form a unified whole of the protective cover, and the protective cover plays an important role in realizing the functions of the protective cover.
The antenna protective cover has the requirements of rain prevention and dust prevention. The sealing of the protective cover mainly comprises three parts, namely sealing between the side frames, sealing between the side frames and the upper cover 5 and sealing for positioning the sealing frame 6.
1. Sealing of side frames
The sealing principle between the adjacent side frames is the same, and the sealing design between the adjacent side frames will be described below by taking only the sealing surface between the left side frame 3 and the front side frame 1 as an example. As shown in fig. 8, a groove 24 and a boss 25 are processed on the side end face of the left side frame 3, a groove 24 is processed on the side end face of the front side frame 1, and a foamed ethylene propylene diene monomer sealing strip 23 with good weather resistance is adhered on the end face of the groove 24.
The side frames are designed into a labyrinth seal structure, so that the structural forms of the four side frames are different: the left side frame 3 has the shortest length, the front and the back side frames have symmetrical shapes, the length is in the middle, and the right side frame 4 has the longest length. The structure determines the folding and unfolding of the protective cover, and the folding and unfolding are carried out according to a certain sequence:
when the protective cover is folded, the left side frame 3 is vertically erected, the front side frame and the rear side frame are vertically erected, the right side frame 4 is vertically erected, and the adjacent side frames are connected into a whole through the quick clamp 8; then the upper cover 5 is buckled on the side frames which are vertically erected, and the left and right side frames are connected with the upper cover 5 through the quick clamp 8.
The unfolding operation of the protective cover can be completed according to the reverse sequence.
2. Sealing of upper cover
In order to prevent rainwater from leaking into the protective cover, the upper cover 5 is buckled on the side frame which is erected vertically, so that downward flanging similar to eave is formed. As shown in fig. 9, a sealing groove 26 is formed on the contact surface between the inner side of the upper cover 5 and the side frame, and a foamed epdm sealing strip is adhered to achieve effective sealing.
3. Sealing of the positioning sealing frame 6
The positioning sealing frame 6 shown in fig. 10 is a square frame structure processed by hot-rolled equal angle steel, and includes a horizontal frame 27 and a vertical frame 28, which are important parts for starting, supporting, and rotating, and the functions of which are:
1. the positioning function is as follows: when the side frames are in the vertical position, the vertical side frames of the positioning sealing frame 6 have a positioning effect on the side frames, and the side frames are prevented from further inclining inwards;
2. the sealing function is as follows: the vertical frame of the positioning sealing frame 6 forms a threshold effect, can prevent rainwater from flowing backwards to the internal equipment of the protective cover, and has a certain sealing and blocking effect.
In addition, in fig. 2, a rubber plate with the thickness of 8mm is arranged between the positioning sealing frame 6 and the shield mounting flange 9, so that the reliability of shield sealing is further enhanced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a mobile unit antenna combination protection casing which characterized in that: the wind-proof shield installation flange comprises four side frames, an upper cover, a shield installation flange and positioning sealing frames, wherein the positioning sealing frames are fixed on the shield installation flange, the four side frames are fixedly connected with the shield installation flange through spring hinges along four edges of the positioning sealing frames and can realize horizontal and vertical overturning actions around the spring hinges, the adjacent side frames and the upper cover are connected with the left and right side frames through quick clamps, the quick clamps connecting the left and right side frames with the upper cover are provided with a wind-proof hook assembly, and wind-proof hook assemblies are arranged between the front and left side frames and between the rear and right side frames; the combined protective cover of the vehicle-mounted equipment antenna adopts a split type combined structure, after the protective cover is disassembled, all the components of the protective cover are horizontally placed on the roof, and the protective cover is unfolded in situ in the limited space of the roof.
2. The combined protective cover for the antenna of the vehicle-mounted equipment according to claim 1, characterized in that: the upper cover is buckled on the four vertical side frames, downward flanges are arranged at the edges of the upper cover, steps which are recessed inwards are arranged on the left side surface and the right side surface outside the upper cover, a sealing groove is arranged on the contact surface of the inner side of the upper cover and the side frames, and an ethylene propylene diene monomer sealing strip is pasted in the sealing groove.
3. The combined protective cover for the antenna of the vehicle-mounted equipment according to claim 1, characterized in that: the rapid clamp comprises a rapid clamp flange and a rapid clamp hook seat, the fixation between adjacent side frames is arranged on the inner side of one side frame through the rapid clamp flange, the rapid clamp hook seat is arranged on the inner side of the other adjacent side frame, the rapid clamp mounting surfaces of the adjacent side frames are positioned on the same plane, and the adjacent side frames are fixedly connected through the tensioning action of the rapid clamp; fixed between left and right side face frame and the upper cover, through the mounting of quick-operation clamp flange on left and right side face frame, its hook piece is installed in the outside left and right side of upper cover to inboard recessed step department for left and right side face frame outer end face and the step of upper cover inboard recessed are located the coplanar, and left and right side face frame passes through quick-operation clamp's take-up effect fixed connection with the upper cover.
4. The combined protective cover for the antenna of the vehicle-mounted equipment according to claim 1, characterized in that: prevent the hook subassembly including preventing scraping the hook, preventing scraping the hook seat, preventing scraping the hook round pin axle, preventing scraping hook torsional spring, split pin, prevent scraping the hook round pin axle and pass and prevent scraping the hook, prevent scraping the hook seat, prevent scraping the hook torsional spring, the split pin is fixed prevents scraping the hook round pin axle.
5. The combined protective cover for the antenna of the vehicle-mounted equipment according to claim 4, wherein: one arm of the anti-scraping hook torsion spring is hooked at the anti-scraping hook seat, and the other arm abuts against the vertical surface of the anti-scraping hook.
6. The combined protective cover for the antenna of the vehicle-mounted equipment according to claim 1, characterized in that: prevent wind hook component includes double-screw bolt A, prevent wind hook and two double-screw bolts B, double-screw bolt A, prevent wind hook and double-screw bolt B install at a side frame, install another double-screw bolt B on adjacent side frame, prevent wind hook's one end is equipped with the opening slot of two opposite directions, and the other end is long waist shape hole, prevent wind hook through long waist shape hole and install on double-screw bolt A, prevent wind hook can slide along double-screw bolt A front and back in long waist shape is downthehole.
7. The combined protective cover for the antenna of the vehicle-mounted equipment according to claim 1, characterized in that: the side end face of preceding, back, three side frame on a left side all is equipped with recess and boss, the side end face of right side frame all is equipped with the recess, the recess and the boss of adjacent side frame set up and mutually support in a staggered way, it has the EPT sealing strip to paste in the recess.
8. The combined protective cover for the antenna of the vehicle-mounted equipment according to claim 1, characterized in that: the positioning sealing frame is a square frame structure formed by processing hot-rolled equal-edge angle steel and comprises a horizontal frame and a vertical frame, and a rubber plate with the thickness of 8mm is installed between the positioning sealing frame and the protective cover installation flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610901989.2A CN107994320B (en) | 2016-10-17 | 2016-10-17 | Vehicle-mounted equipment antenna combination protection casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610901989.2A CN107994320B (en) | 2016-10-17 | 2016-10-17 | Vehicle-mounted equipment antenna combination protection casing |
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| Publication Number | Publication Date |
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| CN107994320A CN107994320A (en) | 2018-05-04 |
| CN107994320B true CN107994320B (en) | 2020-12-29 |
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| CN201610901989.2A Active CN107994320B (en) | 2016-10-17 | 2016-10-17 | Vehicle-mounted equipment antenna combination protection casing |
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| US7595764B2 (en) * | 2007-02-07 | 2009-09-29 | Wallace Technologies | Enclosed mobile/transportable satellite antenna system |
| CN201721702U (en) * | 2010-07-05 | 2011-01-26 | 陈尚松 | Folding toolbox |
| CN202509908U (en) * | 2011-12-06 | 2012-10-31 | 三一重机有限公司 | Wind hook for door and excavator |
| CN202979522U (en) * | 2012-11-09 | 2013-06-05 | 天津市亚安科技股份有限公司 | Upper flip outdoor shield with waterproofness |
| CN203318850U (en) * | 2013-05-30 | 2013-12-04 | 天津市顺通带钢有限公司 | Packing box for steel transshipment |
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| CN204805982U (en) * | 2015-06-26 | 2015-11-25 | 陈嫩俤 | Foldable lantern |
| CN205349035U (en) * | 2015-11-13 | 2016-06-29 | 广东澳利坚建筑五金有限公司 | Stop device is opened to window |
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| CN103682549A (en) * | 2013-11-29 | 2014-03-26 | 西安空间无线电技术研究所 | Folding and unfolding device of satellite-borne offset framed reflector |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180424 Address after: 100024 Beijing city Chaoyang District eight Bridge North East Junzhuang No. 1 Applicant after: China Institute of Aeronautical Manufacturing Technology Address before: 100024 Beijing city Chaoyang District eight Bridge North East Junzhuang No. 1 Applicant before: Beijing Aviation Manufacturing Engineering Institute of China Aviation Industry Group Company |
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