CN207834551U - The tree-shaped millimeter wave antenna of combined type - Google Patents
The tree-shaped millimeter wave antenna of combined type Download PDFInfo
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- CN207834551U CN207834551U CN201721541632.4U CN201721541632U CN207834551U CN 207834551 U CN207834551 U CN 207834551U CN 201721541632 U CN201721541632 U CN 201721541632U CN 207834551 U CN207834551 U CN 207834551U
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Abstract
The utility model belongs to communication and field of antenna, and in particular to a kind of tree-shaped millimeter wave antenna of combined type, including pot cover shape antenna body, it is characterised in that：Further include antenna holder, which is tree, and at least one antenna body is equipped on the outer surface of the antenna holder, the water inlet pipe and outlet pipe of cooling water are respectively equipped with inside the antenna holder；Each antenna body is equipped with water outlet water pipe and water inlet water pipe, and the water outlet water pipe is connect equipped with connector with the branch pipe of the outlet pipe, and the water inlet water pipe is connect equipped with connector with the branch pipe of the water inlet pipe.The beneficial effects of the utility model are：Antenna gain is greatly improved, improves network capacity, and time delay can be greatly lowered；Signal range of receiving is increased, and has saved antenna floor space；The replacement of convenient antenna simultaneously.
Description
Technical field
The utility model belongs to communication and antenna technical field, and in particular to a kind of tree-shaped millimeter wave antenna of combined type.
Background technology
Currently, the reflecting surface of rotational-symmetric form is widely used while ensureing antenna performance because easily manufactured,
Its deficiency is：The electromagnetic wave part that reflecting surface gives off enters feed, enables to the impedance operator of feed to deteriorate, in turn
The more or less support construction of feed also can shield portions electromagnetic wave, reduce the radiation efficiency of antenna, affect reflecting surface day
The gain of line；In order to overcome rotational-symmetric form reflector antenna weakness, offset reflector antenna improves reflecting surface
Structure intercepts an oval part from rotational symmetry parabola antenna with circular cone, has just obtained offset parabolic antenna, this
Biasing reflecting surface dexterously avoids blocking for feed and its strut, special so as to the input standing wave that improves sidelobe level and feed
Property, but the asymmetry of this bias structure can result in cross polarization level rising and beam tilt, especially work as feed
When the scanning for needing defocus to realize assigned direction, this defect will can not be ignored；In order to overcome offset parabolic antenna not
Foot, in actual use, defocusing reflector antenna comes into being, i.e., by feed defocusing certain distance so that wave beam can be small
It is scanned back and forth in angular range, realizes that the search and tracking to target, deficiency are：This side for causing reflecting surface by defocus
Deteriorate to figure；And the signal source receiving point of traditional parabola antenna is all arranged in concave surface, has ignored convex surface and has to signal source receiving
Have a gain effect, especially concave surface can not face information source when, waste the effect that convex surface receives information source.
Meanwhile for small space, antenna has a very limited distribution, with general mode install antenna it will cause
Space waste is also difficult to reach ideal reception；Since antenna is in running order for a long time, and long-term work at high temperature
Make, it is easy to damage, then design focal point will be become by how being convenient for changing the antenna damaged.
To sum up, it designs and a kind of largely increasing antenna gain, saving floor occupying area and the combined type being convenient for changing is tree-shaped
Millimeter wave antenna necessitates.
Utility model content
Largely increasing antenna gain in order to solve the above technical problems, the utility model provides one kind, save and take up an area
Area and the tree-shaped millimeter wave antenna of the combined type being convenient for changing.
The technical solution of the utility model is as follows：
A kind of tree-shaped millimeter wave antenna of combined type, including pot cover shape antenna body, it is characterised in that：It further include antenna branch
Frame, which is tree, including trunk portion and limb part, in the antenna holder trunk and limb part
At least one antenna body is installed on outer surface, the water inlet pipe of cooling water is respectively equipped with inside the antenna holder and is gone out
Water pipe；
Each antenna body is equipped with water outlet water pipe and water inlet water pipe, the water outlet water pipe be equipped with connector with
The branch pipe of the outlet pipe connects, and the water inlet water pipe is connect equipped with connector with the branch pipe of the water inlet pipe.
Using the above scheme, antenna is distributed on the holder of tree, is not only reduced floor space, is enhanced antenna
Reception, moreover it is possible to millimeter wave in all directions is received comprehensively；The setting of connector makes inside antenna and antenna holder
It is installed at combined type, conveniently can replace antenna body at any time, the work without influencing entire tree-shaped antenna.
The connection type of the water outlet water pipe and outlet pipe branch pipe, the company with the water inlet water pipe and water inlet pipe branch pipe
Connect that mode is consistent, wherein water outlet water pipe and the connection type of outlet pipe branch pipe is：
It is equipped with a circle flanging in the upper end of the outlet pipe branch pipe, the lower end of the connector is equipped with a circle in-flanges,
The flanging of the outlet pipe and the in-flanges of the connector interlock；
It is provided with external screw thread in the end of the water outlet water pipe, the upper end of the connector is provided with internal thread.
The contact position of the water outlet water pipe and outlet pipe branch pipe is equipped with rubber sheet gasket, and the rubber sheet gasket is annulus, institute
The centre for stating rubber sheet gasket is equipped with the hollow boss of a circle.
Using the above scheme, the boss of gasket stretches into the inside of connector one end water pipe, and the annulus outside gasket is placed on
The pipe of connector both ends water pipe is along upper, the protrusion of nut bottom and the protrusion split-phase button of branch pipe connecting pin, at the same by water outlet/
The screw thread of water inlet water pipe connecting pin outer surface is slowly tightened with the screw thread inside nut upper end, just completes two parts water pipe
Combination；Gasket is rubber material, not only prevents leak, certain deformation can be also generated under the extruding of both ends water pipe, is strengthened
The leakproofness of two water pipes connection.
Entering water electromagnetic valve is installed on the branch pipe of the water inlet pipe, outlet valve is installed on the branch pipe of the outlet pipe.
The antenna holder is internally provided with control system, and the control system includes control processor, the water inlet electromagnetism
For valve at least provided with one, the output end of the control processor connects the entering water electromagnetic valve.
Using the above scheme, outlet valve belongs to normally opened setting, can be turned off manually before replacing antenna, in order to avoid water outlet
Cooling water in pipe overflows；Entering water electromagnetic valve is set, the circulation of cooling water is uniformly controlled convenient for control processor, successively to antenna
Carry out cooling treatment；Processing method is：Control processor presets a time delay, and first time time delay opens the first water inlet electromagnetism
Valve is then shut off；Second of time delay opens the second entering water electromagnetic valve, is then shut off；And so on, opening the last one water inlet
After solenoid valve, and started the cycle over from first solenoid valve.
The outlet pipe connection water outlet pond, the flow pipe connection water inlet pond in the water outlet pond, the water inlet pond
Equipped with water pump, the water pump connects water inlet pipe.
The water outlet basin bottom is equipped with water outlet discharge outlet, equipped with outlet discharge valve at the water outlet discharge outlet, it is described into
Water basin bottom is equipped with water inlet discharge outlet, water inlet drain valve is equipped at the water inlet discharge outlet, the water outlet pond is higher than described
Intake pond, and the flow pipe in the water outlet pond, which is equipped with, send water solenoid valve.
Using the above scheme, two ponds are set, is conducive to cooling water and is fully cooled used again, make into Shui Shui
Pond is connected to water outlet pond by flow pipe, and the state for sending water solenoid valve to maintain a normally open ensure that the recycling of cooling water；Its
The design higher than water inlet pond of middle water outlet pond, can make cooling water keep nature circulation status, and drain valve is arranged in basin bottom,
Its discharge can be controlled when cooling water is unqualified.
The water inlet pond and water outlet pond are equipped with water quality detection system, and the water quality detection system includes water outlet detection dress
It sets, the water outlet detection device is located in the water outlet pond, the output end connecting detection processor of the water outlet detection device
Water outlet input terminal, the water outlet draining output end of the measurement processor connects the outlet discharge valve, the measurement processor
Send water output end connect described in send water solenoid valve；
The water inlet pond is provided with water inlet detecting device, and the output end of the water inlet detecting device connects at the detection
Manage the water inlet input terminal of device, the water inlet draining output end of the measurement processor connects the water inlet drain valve, at the detection
The water pump output end for managing device connects the water pump.
Using the above scheme, water quality detection system is at any time detected the water quality in pond, when water outlet detection device inspection
Measure cooling water in water outlet pond it is unqualified when, transmit a signal to water quality treater, water outlet is opened in water quality treater control
Tank drain valve, simultaneously closes off and send water solenoid valve, and contaminated cooling water is prevented to be flowed into water pond；When water inlet detection dress
Set when detecting that cooling water into water pond is unqualified, transmit a signal to water quality treater, water quality treater control open into
Water tank drain valve, while water pump being allowed to stop the work of transmission cooling water, until all cooling waters are discharged.
The inner surface of the antenna body is provided with strip protrusion, and the strip cam surface is equipped with intensive millimeter
Wave antenna patch also is provided with millimeter wave antenna patch, the antenna sheet in the gully between adjacent two strip protrusions
The outer surface of body is equipped with a circle patch band, and for the patch band close to the opening of antenna body, the bandwidth of the patch band is antenna sheet
The one third of external surface width, the patch band are equipped with intensive millimeter wave antenna patch, and the antenna body is covered with absolutely
Edge protective film, the insulating protective film cover all millimeter wave antenna patches.
Using the above structure, strip cam surface is densely covered with element antenna patch, and each patch is equivalent to one instead
Face is penetrated, the gain of antenna is greatly increased, along with the patch band of outer surface is arranged, dramatically expands connecing for antenna
Receive area.
The strip protrusion is double-spiral structure, and the double-spiral structure interconnects, and the strip protrusion is from institute
The outer for stating the inner surface center inner surface of antenna body extends, the trapezoidal structure in cross section of the strip protrusion, institute
The cooling-water duct for hollow structure inside strip protrusion is stated, the water outlet and water inlet of the cooling-water duct are positioned at described
At the inner surface center of antenna body, the cooling-water duct inner wall posts millimeter wave antenna patch.
Using the above scheme, since most of millimeter wave antenna patch is all for a long time by sunlight, operating ambient temperature
It is very high, meanwhile, for millimeter wave antenna patch greatly all in 24 hours non-stop run states, chip heat is higher to reduce antenna
Service life will be arranged cooling-water duct inside strip projective structure, can cool down in time to chip, improves antenna and use the longevity
Life.
Osculum is provided at the center of the antenna body inner surface, the osculum is connected with downwards drainpipe, institute
The inner wall for stating drainpipe top posts millimeter wave antenna patch, and water outlet and the water inlet of the cooling-water duct are located at osculum
It is interior.
The water outlet of the cooling-water duct connects the water outlet water pipe, and the water inlet of the cooling-water duct connects institute
State water inlet water pipe.
Using the above scheme, the presence of osculum, can be after the pollutants such as the dust of cleaning antenna body receiving plane
Discharge increases day since most millimeter wave is introduced osculum by spiral strip projective structure in osculum inner wall
Line patch can fully receive millimeter wave；Double-stranded strip protrusion is set, water inlet and the water outlet of cooling-water duct are made
Mouth is all disposed at the center of antenna inner surface, convenient for being connect with water inlet pipe, outlet pipe.
It has the beneficial effect that：Compared with prior art, antenna gain is greatly improved in the utility model, improves network appearance
Amount, and time delay can be greatly lowered；Antenna installation is in tree-shaped, increases signal range of receiving, and saved antenna floor space；
Knockdown installation method simultaneously, facilitates the replacement of antenna.
Description of the drawings
Fig. 1 is the installation site figure of connector.
Fig. 2 is the structural schematic diagram of connector.
Fig. 3 is the antenna scheme of installation of the utility model.
Fig. 4 is the cycle schematic diagram of cooling water.
Fig. 5 is water quality detection system schematic diagram.
Fig. 6 system schematics in order to control.
Fig. 7 is antenna body vertical view.
Fig. 8 is the internal structure schematic diagram of strip protrusion.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and embodiments：
As shown in figure 3, a kind of tree-shaped millimeter wave antenna of combined type, including pot cover shape antenna body 1, it is characterised in that：Also
Including antenna holder 4, which is tree, including trunk portion and limb part, is led in the antenna holder 4
At least one antenna body 1 is installed on the dry outer surface with limb part, is respectively equipped with inside the antenna holder 4 cold
But the water inlet pipe 5 and outlet pipe 6 of water；
Such as Fig. 1 as can be seen that antenna body 1 is equipped with water outlet water pipe and water inlet water pipe, the water outlet as described in each
Water pipe is connect equipped with connector 14 with the branch pipe of the outlet pipe 6, and the water inlet water pipe is equipped with connector 14 and the water inlet
The branch pipe of pipe 5 connects.Entering water electromagnetic valve 11 is installed on the branch pipe of the water inlet pipe 5, is equipped on the branch pipe of the outlet pipe 6
Outlet valve 15.
As shown in fig. 6, the antenna holder 4 is internally provided with control system, the control system includes control processor 10,
For the entering water electromagnetic valve 11 at least provided with one, the output end of the control processor 10 connects the entering water electromagnetic valve 11.
As shown in Fig. 2, the connection type of the water outlet water pipe and 6 branch pipe of outlet pipe, with the water inlet water pipe with into
The connection type of 5 branch pipe of water pipe is consistent, and wherein water outlet water pipe and the connection type of 6 branch pipe of outlet pipe is：
It is equipped with a circle flanging in the connecting pin of the outlet pipe 6, the lower end of the connector 14 is equipped with a circle in-flanges,
The flanging of the outlet pipe 6 and the in-flanges of the connector 14 interlock；It is provided with outer spiral shell in the end of the water outlet water pipe
The upper end of line, the connector 14 is provided with internal thread, and the internal thread and external screw thread are engaged；The water outlet water pipe with
The contact position of 6 branch pipe of outlet pipe is equipped with rubber sheet gasket 16, and the rubber sheet gasket 16 is annulus, and the centre of the rubber sheet gasket 16 is set
The boss for having a circle hollow.
As shown in figure 4, the connection water outlet of the outlet pipe 6 pond 7, the flow pipe connection water inlet pond in the water outlet pond 7
8, the water inlet pond 8 is equipped with water pump 13, and the water pump 13 connects water inlet pipe 5.7 bottom of water outlet pond is equipped with water outlet and arranges
The mouth of a river, is equipped with outlet discharge valve 71 at the water outlet discharge outlet, and 8 bottom of water inlet pond is equipped with discharge outlet of intaking, it is described into
Water inlet drain valve 81 is equipped at water discharge outlet, the water outlet pond 7 is higher than the water inlet pond 8, and water is sent in the water outlet pond 7
Pipe is equipped with and send water solenoid valve 12.
As shown in figure 5, the water inlet pond 8 and water outlet pond 7 are equipped with water quality detection system 9, the water quality detection system 9
Including being discharged detection device 91, the water outlet detection device 91 is located in the water outlet pond 7, the water outlet detection device 91
The water outlet input terminal of output end connecting detection processor 93, the water outlet of the measurement processor 93 drains to go out described in output end connection
Water drain valve 71, sending for the measurement processor 93 send water solenoid valve 12 described in the connection of water output end；The water inlet pond 8 is arranged
There are water inlet detecting device 92, the output end of the water inlet detecting device 92 to connect the water inlet input terminal of the measurement processor 93,
The water inlet draining output end of the measurement processor 93 connects the water inlet drain valve 81, the water pump of the measurement processor 93
Output end connects the water pump 13.
As shown in fig. 7, the inner surface of the antenna body 1 is provided with strip protrusion 2, the strip protrusion 2 is double
Helical structure, the double-spiral structure interconnect, the strip protrusion 2 from the inner surface center of the antenna body 1 to
The outer of inner surface extends；
As shown in Figure 1,2 surface of strip protrusion be equipped with intensive millimeter wave antenna patch 3, described adjacent two
Millimeter wave antenna patch 3 also is provided in gully between strip protrusion 2, the outer surface of the antenna body 1 is equipped with a circle and pastes
Piece band, for the patch band close to the opening of antenna body 1, the bandwidth of the patch band is three points of 1 outer surface width of antenna body
One of, which is equipped with intensive millimeter wave antenna patch 3, and the antenna body 1 is covered with insulating protective film, the insulation
Protective film covers all millimeter wave antenna patches 3.
As shown in figure 8, the trapezoidal structure in cross section of the strip protrusion 2,2 inside of the strip protrusion is hollow
The cooling-water duct of structure, the water outlet 1a and water inlet 1c of the cooling-water duct are located at the inner surface of the antenna body 1
At center, the cooling-water duct inner wall posts millimeter wave antenna patch 3.
Such as Fig. 1 as can be seen that being provided with osculum 1b, the osculum 1b at the center of 1 inner surface of the antenna body
It is connected with drainpipe downwards, the inner wall on the drainpipe top posts millimeter wave antenna patch 3, the water outlet of the cooling-water duct
Mouth 1a and water inlet 1c is located in osculum 1b；The water outlet 1a connections water outlet water pipe of the cooling-water duct, it is described
The water inlet 1c connections water inlet water pipe of cooling-water duct.
Claims (10)
1. a kind of tree-shaped millimeter wave antenna of combined type, including pot cover shape antenna body (1), it is characterised in that：It further include antenna branch
Frame (4), the antenna holder (4) are tree, including trunk portion and limb part, the antenna holder (4) trunk with
At least one antenna body (1) is installed on the outer surface of limb part, is respectively equipped with inside the antenna holder (4) cold
But the water inlet pipe (5) and outlet pipe (6) of water；
Each antenna body (1) is equipped with water outlet water pipe and water inlet water pipe, and the water outlet water pipe is equipped with connector
(14) it is connect with the branch pipe of the outlet pipe (6), the water inlet water pipe is equipped with the branch of connector (14) and the water inlet pipe (5)
Pipe connects.
2. the tree-shaped millimeter wave antenna of combined type according to claim 1, it is characterised in that：The water outlet water pipe and water outlet
Manage the connection type of (6) branch pipe, wherein water outlet consistent with the connection type of water inlet pipe (5) branch pipe with the water inlet water pipe
The connection type of water pipe and outlet pipe (6) branch pipe is：
It is equipped with a circle flanging in the upper end of the outlet pipe (6) branch pipe, the lower end of the connector (14) is equipped with a circle varus
The in-flanges on side, the flanging and the connector (14) of the outlet pipe (6) interlocks；
It is provided with external screw thread in the end of the water outlet water pipe, the upper end of the connector (14) is provided with internal thread.
3. the tree-shaped millimeter wave antenna of combined type according to claim 2, it is characterised in that：The water outlet water pipe with go out
The contact position of water pipe (6) branch pipe is equipped with rubber sheet gasket (16), and the rubber sheet gasket (16) is annulus, the rubber sheet gasket (16)
Centre is equipped with the hollow boss of a circle.
4. the tree-shaped millimeter wave antenna of combined type according to claim 1, it is characterised in that：The branch pipe of the water inlet pipe (5)
On entering water electromagnetic valve (11) is installed, outlet valve (15) is installed on the branch pipe of the outlet pipe (6)；
Outlet pipe (6) connection water outlet pond (7), flow pipe connection water inlet pond (8) of water outlet pond (7) are described
Pond (8) are intake equipped with water pump (13), water pump (13) the connection water inlet pipe (5).
5. the tree-shaped millimeter wave antenna of combined type according to claim 4, it is characterised in that：The antenna holder (4) is internal
Equipped with control system, the control system includes control processor (10), and the entering water electromagnetic valve (11) is at least provided with one, institute
The output end for stating control processor (10) connects the entering water electromagnetic valve (11).
6. the tree-shaped millimeter wave antenna of combined type according to claim 5, it is characterised in that：Water outlet pond (7) bottom
Equipped with water outlet discharge outlet, outlet discharge valve (71) is equipped at the water outlet discharge outlet, water inlet pond (8) bottom is equipped with water inlet
Discharge outlet, is equipped with water inlet drain valve (81) at the water inlet discharge outlet, the water outlet pond (7) higher than the water inlet pond (8),
The flow pipe of water outlet pond (7), which is equipped with, send water solenoid valve (12).
7. the tree-shaped millimeter wave antenna of combined type according to claim 6, it is characterised in that：The water inlet pond (8) and go out
Water pond (7) is equipped with water quality detection system (9), and the water quality detection system (9) includes water outlet detection device (91), the water outlet
Detection device (91) is located in the water outlet pond (7), the output end connecting detection processor of the water outlet detection device (91)
(93) the water outlet draining output end of water outlet input terminal, the measurement processor (93) connects the outlet discharge valve (71), institute
It states sending for measurement processor (93) and send water solenoid valve (12) described in the connection of water output end；
The water inlet pond (8) is provided with water inlet detecting device (92), and the output end of the water inlet detecting device (92) connects institute
The water inlet input terminal of measurement processor (93) is stated, the water inlet draining output end of the measurement processor (93) connects the water inlet row
The water pump output end of water valve (81), the measurement processor (93) connects the water pump (13).
8. the tree-shaped millimeter wave antenna of combined type according to claim 1, it is characterised in that：The antenna body (1) it is interior
Surface is provided with strip protrusion (2), and strip protrusion (2) surface is equipped with intensive millimeter wave antenna patch (3), described
Also is provided with millimeter wave antenna patch (3) in gully between adjacent two strip protrusions (2), the antenna body (1) it is outer
Surface is equipped with a circle patch band, and for the patch band close to the opening of antenna body (1), the bandwidth of the patch band is antenna body
(1) one third of outer surface width, the patch band are equipped with intensive millimeter wave antenna patch (3), and the antenna body (1) is covered
It is stamped insulating protective film, the insulating protective film covers all millimeter wave antenna patches (3).
9. the tree-shaped millimeter wave antenna of combined type according to claim 8, it is characterised in that：The strip protrusion (2) is
Double-spiral structure, the double-spiral structure interconnect, inner surface of the strip protrusion (2) from the antenna body (1)
The outer of center inner surface extends, the trapezoidal structure in cross section of the strip protrusion (2), the strip protrusion (2)
Inside is the cooling-water duct of hollow structure, and water outlet (1a) and the water inlet (1c) of the cooling-water duct are located at the antenna
At the inner surface center of ontology (1), the cooling-water duct inner wall posts millimeter wave antenna patch (3)；
Osculum (1b), the downward row of being connected with of the osculum (1b) are provided at the center of antenna body (1) inner surface
Water pipe, the inner wall on the drainpipe top post millimeter wave antenna patch (3), the water outlet (1a) of the cooling-water duct with into
The mouth of a river (1c) is located in osculum (1b).
10. the tree-shaped millimeter wave antenna of combined type according to claim 9, it is characterised in that：The cooling-water duct goes out
The mouth of a river (1a) connects the water outlet water pipe, and the water inlet (1c) of the cooling-water duct connects the water inlet water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721541632.4U CN207834551U (en) | 2017-11-17 | 2017-11-17 | The tree-shaped millimeter wave antenna of combined type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721541632.4U CN207834551U (en) | 2017-11-17 | 2017-11-17 | The tree-shaped millimeter wave antenna of combined type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207834551U true CN207834551U (en) | 2018-09-07 |
Family
ID=63386378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721541632.4U Active CN207834551U (en) | 2017-11-17 | 2017-11-17 | The tree-shaped millimeter wave antenna of combined type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207834551U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018485A (en) * | 2020-08-26 | 2020-12-01 | 宣城顺心信息技术服务有限公司 | Communication antenna suitable for big environment of difference in temperature round clock |
-
2017
- 2017-11-17 CN CN201721541632.4U patent/CN207834551U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018485A (en) * | 2020-08-26 | 2020-12-01 | 宣城顺心信息技术服务有限公司 | Communication antenna suitable for big environment of difference in temperature round clock |
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Effective date of registration: 20201117 Address after: 402246, Jiangjin District, Chongqing, Fu New District Patentee after: CHONGQING VOCATIONAL College OF TRANSPORTATION Patentee after: ARMY ENGINEERING UNIVERSITY OF CHINA PLA Address before: 402247, No. 7, College Road, Fu Fu New District, Jiangjin District, Chongqing Patentee before: CHONGQING VOCATIONAL College OF TRANSPORTATION |