CN106441937A - Desk-type detection assisting and restraining device for braking force of full-time four-wheel-drive vehicles - Google Patents
Desk-type detection assisting and restraining device for braking force of full-time four-wheel-drive vehicles Download PDFInfo
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- CN106441937A CN106441937A CN201610977571.XA CN201610977571A CN106441937A CN 106441937 A CN106441937 A CN 106441937A CN 201610977571 A CN201610977571 A CN 201610977571A CN 106441937 A CN106441937 A CN 106441937A
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- cylinder
- desk
- telescopic arm
- shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0072—Wheeled or endless-tracked vehicles the wheels of the vehicle co-operating with rotatable rolls
- G01M17/0074—Details, e.g. roller construction, vehicle restraining devices
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- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a desk-type detection assisting and restraining device for braking force of full-time four-wheel-drive vehicles. The desk-type detection assisting and restraining device comprises two movable horizontal-restraining roller mechanisms, two extension and swing mechanisms, a control system and four free roller groups. The extension and swing mechanisms are horizontally arranged in foundation grooves. The free roller groups are arranged on the foundation. Two of the free roller groups in pair are arranged parallelly on the foundation in front of a counter-force type brake detection platform along the advancing direction of wheels, and the other two free roller groups in pair are arranged parallelly on the foundation in back of the counter-force type brake detection platform along the advancing direction of wheels. Each extension and swing mechanism comprises an extension mechanism and a self-locking swing mechanism. The front ends of the extension mechanisms are rotationally connected with two ends of the movable horizontal-restraining roller mechanisms. The rear ends of the extension mechanisms are fixedly connected with the self-locking swing mechanisms. The movable horizontal-restraining roller mechanisms and the extension and swing mechanisms are positioned between the counter-force type brake detection platform and the free roller groups behind thereof after being assembled. The desk-type detection assisting and restraining device has the advantages that the braking force of different models of the full-time four-wheel-drive vehicles can be detected, the device is convenient to mount and demount, cost is low, efficiency is high, and detection needs of assembly lines of detection stations can be met.
Description
Technical field
The present invention relates to a kind of auxiliary device of the desk-top testing equipment of automobile braking force, specially a kind of AWD car system
Dynamic testing supplemental restraint system.
Background technology
At present, the detection of automobile braking force generally adopts anti-force type drum braking laboratory table, and the laboratory table can only be to single shaft
The vehicle braking performances of driving are detected, AWD car is due to its unique power drive system, it is impossible in existing detection
The detection of braking ability being carried out on equipment, relying only on the examination of road of poor efficiency, the examination of road method is easily subject to various natural conditions
Impact.
Content of the invention
The purpose of the present invention brake force of AWD car cannot be carried out for the desk-top testing equipment of current brake force
Detection, provides a kind of AWD car braking forces measuring supplemental restraint system.
The present invention is achieved through the following technical solutions：
A kind of desk-top detection supplemental restraint system of AWD car brake force, before and after being arranged on anti-force type brake detection table, bag
Include two movable horizontal restraint cylinder mechanisms, two flexible wabbler mechanisms being horizontally installed in the ground groove, control system
System, four free cylinder groups being arranged on ground, the free cylinder group is put down in pairs respectively along wheel direction of advance
Row be arranged on anti-force type brake detection table front and back ground on, the flexible wabbler mechanism include telescoping mechanism and from
Locking-type wabbler mechanism, the front end of the telescoping mechanism and movable horizontal restraint cylinder mechanism two ends rotate and are connected, rear end and self-locking
Formula wabbler mechanism is fixedly connected, and brakes positioned at anti-force type after the movable horizontal restraint cylinder mechanism and the assembling of flexible wabbler mechanism
Between monitor station and its free cylinder group at rear, described control device is by circuit and telescoping mechanism and self-locking wobbler
Structure is connected.
Further, described movable horizontal restraint cylinder mechanism includes to constrain cylinder, is fixedly installed on constraint cylinder two
The constraint drum shaft of end endoporus, front end of the constraint drum shaft by the second deep groove ball bearing with the telescoping mechanism rotates even
Connect.
Further, between described constraint drum shaft and constraint cylinder endoporus, constraint drum sleeve is additionally provided with.
Further, described telescoping mechanism includes the slide nested upper telescopic arm for arranging and lower telescopic arm, two ends difference
The upper telescopic arm and the hydraulic cylinder on lower telescopic arm is fixedly connected on, described lower telescopic arm rear end connects self-locking wobbler
Structure.
Further, T-flange is provided with along its length, along long on described lower telescopic arm on described upper telescopic arm
Degree direction is provided with the T-shaped groove for matching with the T-flange, it is ensured that the good guidance of device and rigidity.
Further, described self-locking wabbler mechanism includes that the turbine on turbine wheel shaft is mutually nibbled with the turbine
The worm shaft of conjunction, by the motor of shaft coupling and described worm shaft one end drive connection, the two ends of the turbine wheel shaft pass through
Worm-wheel shaft firm banking is in the groove of the ground, and the two ends of the worm shaft are fixed on by worm shaft firm banking
In the groove of the ground.
Further, the lower telescopic arm is connected with turbine wheel shaft by interference fit, and spacing by the shaft shoulder.
Further, it is provided with the groove of described ground above the self-locking wabbler mechanism and thickness ensures
Vehicle can normal through steel plate.
Further, described free cylinder group includes the two free roller seats be arrangeding in parallel, two ends by the first zanjon
Ball bearing is rotatably arranged on some free cylinder between two free roller seats.
Further, described free cylinder includes bored roll, is fixedly installed on the cylinder axle at the bored roll two ends,
The inner ring of first deep groove ball bearing is fixedly connected with cylinder axle, and outer ring is fixedly connected with the dead eye on free roller seat.
With respect to prior art, the invention has the advantages that：
1）This supplemental restraint system is using guidance quality and the rigidity of T-slot, it is ensured that the synchronous lifting of left and right hydraulic cylinder, control dress
Put simple easily enforcement.
2）Using the self-locking performance of worm and gear, in wheel braking force detection process, the constraint cylinder that contacts with tested wheel
Shift in position will not occur, be that wheel provides reliable horizontal restraint power.
3）Install additional on the basis of anti-force type drum braking power monitor station, can moving constraint according to different wheel size adjustment
The position of cylinder, provides horizontal restraint power to tested wheel, realizes being braked the AWD car of different model the inspection of power
Survey.
4）This is reusable, easy installation and removal, low cost, high efficiency, can meet the detection need of measuring station streamline
Ask.
Description of the drawings
Fig. 1 is the axonometric drawing of the supplemental restraint system with desk-top braking forces measuring equipment of normal operating conditions.
Fig. 2 is the enlarged axonometric map of the supplemental restraint system after removing steel plate and desk-top braking forces measuring equipment.
Fig. 3 is the axonometric drawing of in running order braking forces measuring supplemental restraint system.
Fig. 4 is the sectional arrangement drawing of horizontal restraint cylinder and upper telescopic arm.
Fig. 5 is the overall assembly structure figure of free cylinder group.
Fig. 6 is free cylinder group cross-sectional view.
Fig. 7 is the structure chart of upper and lower telescopic arm.
In figure show：1- is by free cylinder group；The free roller seat of 11-；12- bored roll；13- cylinder axle；14- first is deep
Ditch ball bearing；2- anti-force type brake detection table；The movable horizontal restraint cylinder mechanism of 3-；31- constrains cylinder；The upper telescopic arm of 32-；
321-T type flange；33- hydraulic cylinder；Telescopic arm under 34-；341-T type groove；35- worm-wheel shaft firm banking；36- turbine wheel shaft；37-
Turbine；38- motor；39- shaft coupling；310- worm shaft firm banking；311- worm shaft；The second deep groove ball bearing of 312-；
313- constrains drum sleeve；314- constrains drum shaft；4- steel plate；5- ground；6- groove.
Specific embodiment
For a better understanding of the present invention, below in conjunction with the accompanying drawings this device is described further.
As shown in figure 1, a kind of desk-top detection supplemental restraint system of AWD car brake force, is arranged on anti-force type braking inspection
Before and after scaffold tower 2, stretch including two movable horizontal restraint cylinder mechanisms 3, be horizontally installed in 5 groove 6 of the ground two
Contracting wabbler mechanism, control system, the free cylinder group 1 of four for being arranged on ground 5, the free cylinder group 1 is advanced along wheel
Direction is set in parallel on the ground 5 of the front and back of anti-force type brake detection table 2 in pairs respectively, AWD car
Detection when, non-test wheel is placed in one on a pair free cylinder group 1, freely can be rolled.The flexible wabbler mechanism bag
Telescoping mechanism and self-locking wabbler mechanism is included, the front end of the telescoping mechanism is rotated with movable 3 two ends of horizontal restraint cylinder mechanism
Connection, rear end is fixedly connected with self-locking wabbler mechanism, and the movable horizontal restraint cylinder mechanism 3 and flexible wabbler mechanism are assembled
Afterwards Wei Yu anti-force type brake detection table 2 and its free cylinder group 1 at rear between, described control device passes through circuit and stretches
Mechanism and self-locking wabbler mechanism are connected.
Specifically, as shown in figure 4, described movable horizontal restraint cylinder mechanism 3 includes to constrain cylinder 31, is fixedly installed
In the constraint drum shaft 314 of constraint 31 two ends endoporus of cylinder, the constraint drum shaft 314 by the second deep groove ball bearing 312 with
The front end of the telescoping mechanism rotates connection, meanwhile, also set up between described constraint drum shaft 314 and constraint 31 endoporus of cylinder
Constrained drum sleeve 313.
Specifically, as shown in Figure 3 and Figure 7, described telescoping mechanism include to slide the nested upper telescopic arm 32 for arranging and
Lower telescopic arm 34, two ends is respectively fixedly connected with the hydraulic cylinder 33 on described on telescopic arm 32 and lower telescopic arm 34, described under
34 rear end of telescopic arm connects self-locking wabbler mechanism, is provided with for respectively on described upper telescopic arm 32 and lower telescopic arm 34
The hanger at 33 two ends of connection liquid cylinder pressure, upper telescopic arm 32 and lower telescopic arm 34 can pass through the driving of hydraulic cylinder 33 and realize stretching motion.
Meanwhile, it is provided with T-flange 321 on described upper telescopic arm 32 along its length, along length side on described lower telescopic arm 34
To being provided with the T-shaped groove 341 that matches with the T-flange 321, it is ensured that the good guidance of device and rigidity.
Specifically, as shown in figure 3, described self-locking wabbler mechanism include turbine 37 on turbine wheel shaft 36,
The worm shaft 311 that is meshed with the turbine 37, by the stepping electricity of shaft coupling 39 and 311 one end drive connection of the worm shaft
Machine 38, motor 38 by rotating drive telescoping mechanism rotate around turbine wheel shaft 36, in realizations telescopic arm 32 and lower stretch
The swing of arm 34.The two ends of the turbine wheel shaft 36 are arranged on by worm-wheel shaft firm banking 35 in the groove 6 of the ground 5, institute
The two ends for stating worm shaft 311 are fixed in the groove 6 of the ground 5 by worm shaft firm banking 310.The lower telescopic arm 34
It is connected with turbine wheel shaft 36 by interference fit, and spacing by the shaft shoulder.
In addition, being provided with the groove 6 of described ground 5 above the self-locking wabbler mechanism and thickness guarantee car
Can normal through steel plate 4.Both vehicle passed through respectively, while the convenient maintenance to device, if necessary, only need to raise steel plate
4, you can the equipment in groove is safeguarded.
Specifically, as it can be seen in figures 5 and 6, described free cylinder group 1 include the two free roller seats 11 be arrangeding in parallel,
Two ends are rotatably arranged on some free cylinder between two free roller seats 11 by the first deep groove ball bearing 14.Described freedom
Cylinder includes bored roll 12, is fixedly installed on the cylinder axle 13 at 12 two ends of the bored roll, first deep groove ball bearing 14
Inner ring be fixedly connected with cylinder axle 13, outer ring is fixedly connected with the dead eye on free roller seat 11.
The present embodiment provide AWD car braking forces measuring auxiliary constraint restraint device, be in single shaft anti-force type cylinder
On the basis of laboratory table, increase a movable horizontal restraint cylinder mechanism 3 under control of the control device as single-chip microcomputer, moveable water
The position adjustments of flat constraint cylinder mechanism 3 are by reality under hydraulic system and turbine and worm mechanism collective effect.Described hydraulic pressure system
The operation of system and motor 38 is realized by Single-chip Controlling.Sensor receives vehicle and puts in place after signal, according to different
4-wheel driven car model obtains the elongation of described hydraulic cylinder and 38 rotating cycle of motor, then the control of single-chip microcomputer output signal
Motor is rotated to required angle, and controls hydraulic cylinder to extend to Len req, using turbine and worm single-direction transmission characteristic,
Constraint is detected wheel and completes braking forces measuring.
The first parameter such as the model of input test vehicle, chassis height in a computer before detection, then calculates described
The elongation of hydraulic cylinder 33 and the anglec of rotation of turbine, so as to calculate length and the stepping of the opening/closing time of hydraulic system electromagnetic valve
The rotating cycle of motor 38, while calculating the thrust size needed for hydraulic cylinder 33, and stores in systems.Constraint cylinder 31 exists
In the groove 6 at anti-force type roller test stand rear, the preparation of test is carried out.
During detection, detection vehicle drives into detection line along fixed route, when front-wheel is parked on anti-force type brake detection table 2
Afterwards, single-chip microcomputer makes constraint cylinder 31 exist according to the data for storing before, first control motor 38 according to the number of turns rotation of storage
Turn an angle under the drive of 37 worm shaft 311 of worm gear disengaging groove 6；Then Single-chip Controlling hydraulic system causes telescopic machine
Structure extends certain length in the presence of hydraulic cylinder 33, until keeping good contact with wheel, and by controlling hydraulic cylinder
Thrust so that constraint cylinder 31 produces restraining forceies to wheel.Now, the device that driving restraint cylinder 31 moves stops fortune
Dynamic, due to the self-locking action of worm and gear, constrain cylinder 31 and can only be close to tested vehicle wheel rotation, its rotary shaft can not occur position
Change, so as to constrain the wheel of movement tendency backward.
During detection front-wheel, trailing wheel is freely rotated in two free cylinder groups 1 at 2 rear of anti-force type brake detection table.Before
After wheel has been tested, constraint cylinder 31 is returned in groove, forward travel so that trailing wheel is located on anti-force type brake detection table 2,
And front-wheel is located in two free cylinder groups 1 in 2 front of anti-force type brake detection table, repeat the test operation step of front-wheel
Suddenly, you can complete the brake force to vehicle rear wheel and test.After the completion of test, constraint cylinder 31 is returned in the groove 6 of ground 5, just
Detection line is rolled away from detection vehicle, be that the detection of next car is ready.
The above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and be not to the present invention
Embodiment restriction.For those of ordinary skill in the field, can also make on the basis of the above description
The change of other multi-forms or variation.There is no need to be exhaustive to all of embodiment.All the present invention's
Any modification, equivalent and improvement that is made within spirit and principle etc., should be included in the protection of the claims in the present invention
Within the scope of.
Claims (10)
1. the desk-top detection supplemental restraint system of a kind of AWD car brake force, before being arranged on anti-force type brake detection table (2)
Afterwards, it is characterised in that：Including two movable horizontal restraint cylinder mechanisms (3), it is horizontally installed in the ground (5) groove (6)
Two flexible wabbler mechanisms, control system, four free cylinder group (1) being arranged on ground (5), the free cylinder group
(1) ground of the front and back of anti-force type brake detection table (2) is set in parallel in pairs respectively along wheel direction of advance
On base (5), the flexible wabbler mechanism includes telescoping mechanism and self-locking wabbler mechanism, the front end of the telescoping mechanism with movable
Horizontal restraint cylinder mechanism (3) two ends rotate connection, and rear end is fixedly connected with self-locking wabbler mechanism, the movable horizontal restraint
Free cylinder group (1) at anti-force type brake detection table (2) and its rear is located at after cylinder mechanism (3) and the assembling of flexible wabbler mechanism
Between, described control device is connected with telescoping mechanism and self-locking wabbler mechanism by circuit.
2. the desk-top detection supplemental restraint system of AWD car brake force according to claim 1, it is characterised in that：Described
Movable horizontal restraint cylinder mechanism (3) include constraint cylinder (31), be fixedly installed on the pact of constraint cylinder (31) two ends endoporus
Bundle drum shaft (314), constraint drum shaft (314) passes through the front end of the second deep groove ball bearing (312) and the telescoping mechanism
Rotate connection.
3. the desk-top detection supplemental restraint system of AWD car brake force according to claim 2, it is characterised in that：Described
Constraint drum shaft (314) and constraint cylinder (31) endoporus between be additionally provided with constraint drum sleeve (313).
4. the desk-top detection supplemental restraint system of AWD car brake force according to claim 1, it is characterised in that：Described
Telescoping mechanism include to slide the nested upper telescopic arm (32) for arranging and lower telescopic arm (34), two ends are respectively fixedly connected with described
Hydraulic cylinder (33) on upper telescopic arm (32) and lower telescopic arm (34), described lower telescopic arm (34) rear end connection self-locking is waved
Mechanism.
5. the desk-top detection supplemental restraint system of AWD car brake force according to claim 4, it is characterised in that：Described
Upper telescopic arm (32) on be provided with T-flange (321) along its length, set on described lower telescopic arm (34) along its length
It is equipped with the T-shaped groove (341) for matching with the T-flange (321).
6. the desk-top detection supplemental restraint system of AWD car brake force according to claim 4, it is characterised in that：Described
Self-locking wabbler mechanism include worm shaft that the turbine (37) on turbine wheel shaft (36) is meshed with the turbine (37)
(311) motor (38) of shaft coupling (39) and the worm shaft (311) one end drive connection, the turbine wheel shaft, are passed through
(36) groove (6) of the two ends by worm-wheel shaft firm banking (35) installed in ground (5) is interior, worm shaft (311)
Two ends be fixed in the groove (6) of the ground (5) by worm shaft firm banking (310).
7. the desk-top detection supplemental restraint system of AWD car brake force according to claim 6, it is characterised in that：Described
Lower telescopic arm (34) are connected with turbine wheel shaft (36) by interference fit, and spacing by the shaft shoulder.
8. the desk-top detection supplemental restraint system of AWD car brake force according to claim 1, it is characterised in that：Described
Ground (5) groove (6) on be provided with above the self-locking wabbler mechanism and thickness ensures that vehicle being capable of just normal open
The steel plate (4) that crosses.
9. the desk-top detection supplemental restraint system of AWD car brake force according to claim 1, it is characterised in that：Described
Free cylinder group (1) including two be arranged in parallel free roller seat (11), two ends by the first deep groove ball bearing (14) rotate
The some free cylinder being arranged between two free roller seat (11).
10. the desk-top detection supplemental restraint system of AWD car brake force according to claim 9, it is characterised in that：Institute
The free cylinder that states includes bored roll (12), is fixedly installed on the cylinder axle (13) at the bored roll (12) two ends, and described
The inner ring of one deep groove ball bearing (14) is fixedly connected with cylinder axle (13), and the dead eye on outer ring and free roller seat (11) is fixed even
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610977571.XA CN106441937B (en) | 2016-11-08 | 2016-11-08 | A kind of desk-top detection supplemental restraint system of full-time four-wheel drive vehicle brake force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610977571.XA CN106441937B (en) | 2016-11-08 | 2016-11-08 | A kind of desk-top detection supplemental restraint system of full-time four-wheel drive vehicle brake force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106441937A true CN106441937A (en) | 2017-02-22 |
| CN106441937B CN106441937B (en) | 2018-10-09 |
Family
ID=58207406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610977571.XA Active CN106441937B (en) | 2016-11-08 | 2016-11-08 | A kind of desk-top detection supplemental restraint system of full-time four-wheel drive vehicle brake force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106441937B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782483A (en) * | 2017-11-01 | 2018-03-09 | 广州华工机动车检测技术有限公司 | A kind of servicing unit suitable for the desk-top detection of AWD car brake force |
| CN110887672A (en) * | 2019-11-23 | 2020-03-17 | 同济大学 | Whole car of intelligence car is at ring test system |
| CN107782483B (en) * | 2017-11-01 | 2024-07-16 | 广州华工机动车检测技术有限公司 | Auxiliary device suitable for desktop detection of full-time four-wheel drive braking force |
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| JPH09297081A (en) * | 1996-05-02 | 1997-11-18 | Banzai:Kk | Brake tester for vehicle |
| JP2009222582A (en) * | 2008-03-17 | 2009-10-01 | Honda Motor Co Ltd | Chassis dynamometer |
| CN202075133U (en) * | 2011-03-04 | 2011-12-14 | 成都成保发展股份有限公司 | Counterforce roller brake inspection bench for special vehicle |
| CN203241245U (en) * | 2013-05-28 | 2013-10-16 | 吉林大学 | Wheel restraining device for automobile bench braking force detection |
| JP5450141B2 (en) * | 2010-02-05 | 2014-03-26 | 安全自動車株式会社 | Brake tester with thrust load detection |
| CN205384147U (en) * | 2016-02-22 | 2016-07-13 | 浙江江兴汽车检测设备有限公司 | Two drive general braking checkout stand of 4 wheel driven car |
| CN206223447U (en) * | 2016-11-08 | 2017-06-06 | 华南理工大学 | A kind of desk-top detection supplemental restraint system of AWD car brake force |
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2016
- 2016-11-08 CN CN201610977571.XA patent/CN106441937B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09297081A (en) * | 1996-05-02 | 1997-11-18 | Banzai:Kk | Brake tester for vehicle |
| JP2009222582A (en) * | 2008-03-17 | 2009-10-01 | Honda Motor Co Ltd | Chassis dynamometer |
| JP5450141B2 (en) * | 2010-02-05 | 2014-03-26 | 安全自動車株式会社 | Brake tester with thrust load detection |
| CN202075133U (en) * | 2011-03-04 | 2011-12-14 | 成都成保发展股份有限公司 | Counterforce roller brake inspection bench for special vehicle |
| CN203241245U (en) * | 2013-05-28 | 2013-10-16 | 吉林大学 | Wheel restraining device for automobile bench braking force detection |
| CN205384147U (en) * | 2016-02-22 | 2016-07-13 | 浙江江兴汽车检测设备有限公司 | Two drive general braking checkout stand of 4 wheel driven car |
| CN206223447U (en) * | 2016-11-08 | 2017-06-06 | 华南理工大学 | A kind of desk-top detection supplemental restraint system of AWD car brake force |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782483A (en) * | 2017-11-01 | 2018-03-09 | 广州华工机动车检测技术有限公司 | A kind of servicing unit suitable for the desk-top detection of AWD car brake force |
| CN107782483B (en) * | 2017-11-01 | 2024-07-16 | 广州华工机动车检测技术有限公司 | Auxiliary device suitable for desktop detection of full-time four-wheel drive braking force |
| CN110887672A (en) * | 2019-11-23 | 2020-03-17 | 同济大学 | Whole car of intelligence car is at ring test system |
| CN110887672B (en) * | 2019-11-23 | 2021-09-03 | 同济大学 | Whole car of intelligence car is at ring test system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106441937B (en) | 2018-10-09 |
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Effective date of registration: 20210208 Address after: No.43 Anping Road, Hecheng street, Gaoming District, Foshan City, Guangdong Province 528500 Patentee after: FOSHAN XIANGXIN AUTOMOBILE ARTICLES Co.,Ltd. Address before: 510640 No. 381 Wushan Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: SOUTH CHINA University OF TECHNOLOGY |