CN109211590B - A kind of shift fork system test tooling - Google Patents

A kind of shift fork system test tooling Download PDF

Info

Publication number
CN109211590B
CN109211590B CN201811159705.2A CN201811159705A CN109211590B CN 109211590 B CN109211590 B CN 109211590B CN 201811159705 A CN201811159705 A CN 201811159705A CN 109211590 B CN109211590 B CN 109211590B
Authority
CN
China
Prior art keywords
cylinder sleeve
shift fork
fork system
piston
fixing pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201811159705.2A
Other languages
Chinese (zh)
Other versions
CN109211590A (en
Inventor
丁兆福
胡禅
王文浩
张亚楠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Jianghuai Automobile Group Corp
Original Assignee
Anhui Jianghuai Automobile Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Jianghuai Automobile Group Corp filed Critical Anhui Jianghuai Automobile Group Corp
Priority to CN201811159705.2A priority Critical patent/CN109211590B/en
Publication of CN109211590A publication Critical patent/CN109211590A/en
Application granted granted Critical
Publication of CN109211590B publication Critical patent/CN109211590B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00Testing of vehicles
    • G01M17/007Wheeled or endless-tracked vehicles
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts

Abstract

The invention discloses a kind of shift fork system test toolings, comprising: pedestal is arranged at intervals with first support and second support on pedestal;First cylinder sleeve fixing pipe is fixed in first support, and the first cylinder sleeve is fixed in the first accommodating chamber in the first cylinder sleeve fixing pipe;And first is provided with the first cylinder sleeve cavity on cylinder sleeve, first piston is slidably matched with the first cylinder sleeve cavity, and first piston offsets with shift fork axle;The first oil duct connector is provided in first cylinder sleeve fixing pipe;Second cylinder sleeve fixing pipe is fixed on the secondary support bracket, and the second cylinder sleeve is fixed in the second accommodating chamber in the second cylinder sleeve fixing pipe;And second is provided with the second cylinder sleeve cavity on cylinder sleeve, second piston is slidably matched with the second cylinder sleeve cavity;And second piston shift fork axle offsets;The second oil duct connector is provided in second cylinder sleeve fixing pipe;Compared with prior art, the embodiment of the present invention can be realized the efficient detection of shift fork system performance.

Description

A kind of shift fork system test tooling
Technical field
The present invention relates to gear shift fork detection field, especially a kind of shift fork system test tooling.
Background technique
In fluid drive box assembly, shift fork system is to realize that complete machine hangs the power mechanism of shelves and lower gear, whole in gearbox In machine operational process, gear switch is constantly carried out, working condition is constantly in so as to cause shift fork system, in order to preferably The reliability and fatigue resistance for verifying shift fork system, need the moving displacement to shift fork system, gear shifting force and Oil shocking The performances such as position carry out experimental study.
The research of the reliability and fatigue resistance of shift fork system is mainly tested after complete machine installation in the prior art, If carrying out the research of above-mentioned performance in complete machine, need to take a substantial amount of time the dismounting and test that complete machine is carried out with energy The debugging of equipment causes entire experiment work to change cumbersome and inefficiency.
Summary of the invention
The object of the present invention is to provide a kind of shift fork system test toolings, and to solve deficiency in the prior art, it can Realize the efficient detection of shift fork system performance.
The present invention provides a kind of shift fork system test toolings, comprising: pedestal, the first cylinder sleeve fixing pipe, the first cylinder sleeve, One piston, the second cylinder sleeve fixing pipe, the second cylinder sleeve, second piston and displacement sensor;
First support and second support are arranged at intervals on the pedestal;
The first cylinder sleeve fixing pipe is fixed in the first support, and first cylinder sleeve is fixed on first cylinder sleeve In the first accommodating chamber in fixing pipe;And the first cylinder sleeve cavity is provided on first cylinder sleeve, the first piston with it is described First cylinder sleeve cavity is slidably matched, and the first piston and the first end of the shift fork axle of shift fork system to be detected offset;
The first oil duct connector is provided in the first cylinder sleeve fixing pipe, the first oil duct of the first oil duct fittings turns Adapter tube and the first cylinder sleeve cavity, the first oil duct transfer tube are connect with oil-control mechanism;
The second cylinder sleeve fixing pipe is fixed in the second support, and second cylinder sleeve is fixed on second cylinder sleeve In the second accommodating chamber in fixing pipe;And the second cylinder sleeve cavity is provided on second cylinder sleeve, the second piston with it is described Second cylinder sleeve cavity is slidably matched;And the second end of the second piston and the shift fork axle of shift fork system to be detected offsets;
The second oil duct connector, the second oil duct connector the second oil duct of connection are provided in the second cylinder sleeve fixing pipe Transfer tube and the second cylinder sleeve cavity, the second oil duct transfer tube are connect with oil-control mechanism;
Institute's displacement sensors are fixed on the pedestal, for detecting the movement of shift fork system to be detected.
A kind of shift fork system test tooling as described above, wherein optionally, first adapter is provided with more It is a;Second adapter is provided with multiple.
A kind of shift fork system test tooling as described above, wherein optionally, the bottom end of the first support passes through spiral shell Bolt is fixed on the base, and the top of the first support is provided with mounting portion, and the mounting portion and first cylinder sleeve are solid Determine pipe to match.
A kind of shift fork system test tooling as described above, wherein optionally, institute's displacement sensors are fixed on displacement On sensor mount, institute's displacement sensors mounting rack is fixed on the base.
A kind of shift fork system test tooling as described above, wherein optionally, on institute's displacement sensors mounting rack also It is provided with travel limiter, the travel limiter with the groove on the shift fork of shift fork system for matching, to realize to dialling The limitation of fork system moving displacement.
A kind of shift fork system test tooling as described above, wherein optionally, the pedestal is arranged in the first rotating frame On frame, the both ends of the pedestal are symmetrically arranged with the first turn hole, are provided on first rotating frame and described first turn First rotary shaft of hole cooperation.
A kind of shift fork system test tooling as described above, wherein optionally, first rotating frame is arranged in institute It states on the second rotating frame, the monosymmetric of first rotating frame is provided with the second turn hole, second rotating frame On be provided with second turn hole cooperation the second rotary shaft;And the central axis of second rotary shaft and described first rotates The central axis of axis.
A kind of shift fork system test tooling as described above, wherein optionally, the extending direction of second rotary shaft It is vertical with the extending direction of the first cylinder sleeve fixing pipe.
A kind of shift fork system test tooling as described above, wherein optionally, the pedestal is rectangular configuration, and institute The first turn hole is stated to be located on the symmetry axis of the pedestal.
A kind of shift fork system test tooling as described above, wherein optionally, be provided on first rotating frame Angle measuring mechanism.
Compared with prior art, oil pressure is added in the first cylinder sleeve cavity to push by the present invention by the first oil duct connector The sliding of first piston, and oil pressure is added in the second cylinder sleeve cavity to push second piston by the second oil duct connector Sliding, since first piston and second piston offset respectively at the both ends of shift fork axle, it is achieved that pushing the reciprocal of shift fork axle Movement is equipped with the movement of displacement sensor shift fork axle to simulate the gear shift operation of shift fork system, thus by shift fork system The information of the displacement of work, pressure is achieved detection completely in the same tooling, facilitates the work of shift fork system test It carries out, improves test efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of shift fork system experimentation tooling provided in an embodiment of the present invention;
Fig. 2 is the explosive view of Fig. 1.
Description of symbols: 1- pedestal, 11- first support, 12- second support, the first turn hole of 13-, the first cylinder sleeve of 2- are solid Fixed pipe, 21- the first oil duct connector, the first cylinder sleeve of 3-, 31- the first cylinder sleeve cavity, 4- first piston, 5- the second cylinder sleeve fixing pipe, 51- the second oil duct connector, the second cylinder sleeve of 6-, 61- the second cylinder sleeve cavity, 7- second piston, 8- displacement sensor, 9- displacement sensing Device mounting rack, 91- locating piece,
10- the first oil duct transfer tube, 20- the second oil duct transfer tube, the first rotating frame of 30-, the second turn hole of 301-, 40- Second rotating frame, the second rotary shaft of 401-, 50- angle measuring mechanism, 60- shift fork axle.
Specific embodiment
The embodiments described below with reference to the accompanying drawings are exemplary, for explaining only the invention, and cannot be construed to Limitation of the present invention.
The embodiment of the present invention: as depicted in figs. 1 and 2, disclosing a kind of shift fork system test tooling, including pedestal 1, the One cylinder sleeve fixing pipe 2, the first cylinder sleeve 3, first piston 4, the second cylinder sleeve fixing pipe 5, the second cylinder sleeve 6, second piston 7 and displacement pass Sensor 8;
First support 11 and second support 12 are arranged at intervals on the pedestal 1;The bottom end of first support 11 passes through bolt It is fixed on the pedestal 1, first support 11 is for fixing the first cylinder sleeve fixing pipe 2.The bottom end of the second support 12 It is bolted on the pedestal 1, second support 12 is for fixing the second cylinder sleeve fixing pipe 2.
The first cylinder sleeve fixing pipe 2 is fixed in the first support 11, and first cylinder sleeve 3 is fixed on described first In the first accommodating chamber in cylinder sleeve fixing pipe 2, the first accommodating chamber is provided in the first cylinder sleeve fixing pipe 2,3 interference of the first cylinder sleeve is matched It closes in the first accommodating chamber.The first cylinder sleeve cavity 31, the first piston 4 and described first are provided on first cylinder sleeve 3 Cylinder sleeve cavity 31 is slidably matched, and the first piston 4 and the first end of the shift fork axle 60 of shift fork system to be detected offset;First Piston 4 blocks the first cylinder sleeve cavity 31, and the part of the cylinder sleeve cavity 31 after being blocked forms the first push chamber, by changing Become air pressure in the first push chamber and changes position of the first piston 4 in cylinder sleeve cavity 31, and first piston 4 and 60 phase of shift fork axle It supports, so shift fork axle 60 can be pushed mobile when first piston 4 is to close to the movement of the position of shift fork axle 60.
The first oil duct connector 21, the connection of the first oil duct connector 21 first are provided in the first cylinder sleeve fixing pipe 2 Oil duct transfer tube 10 and the first cylinder sleeve cavity 31, the first oil duct transfer tube 10 are connect with oil-control mechanism;First transfer tube 10 The hydraulic oil of oil-control mechanism is moved in the first cylinder sleeve cavity 31 by the first oil duct connector 21 to push the first cylinder sleeve cavity First piston 4 in 31 does the movement close to shift fork axle 60.
The second cylinder sleeve fixing pipe 5 is fixed in the second support 12, and second cylinder sleeve 6 is fixed on described second In the second accommodating chamber in cylinder sleeve fixing pipe 5, the second cylinder sleeve 6 is interference fitted with second accommodating chamber, and second cylinder sleeve 6 On be provided with the second cylinder sleeve cavity 61, the second piston 7 is slidably matched with the second cylinder sleeve cavity 61, second piston 7 will The second cylinder sleeve cavity 61 blocks, and the second cylinder sleeve cavity 61 after being blocked forms the second push chamber, is pushed away by changing second Move promotion of the intracavitary pressure realization to second piston 7;And the second piston 7 and the shift fork axle 60 of shift fork system to be detected Second end offsets, described to can be realized the promotion movement of shift fork axle 60 of second piston 7 by increasing the pressure in the second push chamber.This Sample, which is provided with piston at the both ends of shift fork axle 60, realizes the movement of flexible modulation shift fork axle 60 or so, to simulate shift The movement of shift fork axle 60 in the process, can fatigue resistance to shift fork axle 60, push the performances such as piston operating status to test.
And how to change the pressure in the second push chamber and then need by second be located in the second cylinder sleeve fixing pipe 5 Oil duct connector 51, the second oil duct transfer tube of 5 one end of the second oil duct connector connection 20 are connected to the second cylinder sleeve chamber with the other end Body 61, the second oil duct transfer tube 20 are connect with oil-control mechanism;Second oil duct transfer tube 20 leads to the hydraulic oil of oil-control mechanism Crossing second has connector 5 to be transported to the pressure for changing the second push chamber in the second cylinder sleeve cavity 61.
Institute's displacement sensors 8 are fixed on the pedestal 1, detect shift fork system to be detected by displacement sensor 8 The amount of movement that shift fork axle 6 is realized during simulating gearing movement.
Further, first adapter 21 is provided with multiple;Second adapter 51 is provided with multiple.It is arranged more A first adapter 21 can be such that the oil liquid pressure of oil-control mechanism enters in the first cylinder sleeve cavity 31 by different angles, equally Multiple second adapters 51 of setting purpose be also that the oil liquid pressure of oil-control mechanism is made to enter the second cylinder at different angles It covers in cavity 61, to test influence of the oil inlet of different angle to shift performance.In shift fork system work process, oil liquid pressure In be often mingled with portion gas, and the gas will will lead to the unstability of the oil liquid pressure acted on piston, in turn result in The phenomenon that piston is tumbled during the motion.The present embodiment is by being arranged multiple first adapters 21 and the second adapter 51 To reach the oil inlet angle of transformation oil inlet pressure, make to act on piston have it is hydraulic also occur unstable, simulate and actually answer The case where with causing piston to turn on one's side in the process, demonstrates influence of the impact position of shift oil duct to gear shifting force and range piston.
Specifically, the bottom end of the first support 11 is bolted on the pedestal 1, the first support 11 Top is provided with mounting portion, and the mounting portion matches with the first cylinder sleeve fixing pipe 2.The first mounting portion, which is arranged, to be facilitated First support 11 and the installation of the first cylinder sleeve fixing pipe 2 are fixed, and are played preferably limit to the first cylinder sleeve fixing pipe 2 and fixed.
Specifically, institute's displacement sensors 8 are fixed on displacement sensor mounting rack 9, institute's displacement sensors mounting rack 9 It is fixed on the pedestal 1.Travel limiter 91, the travel limiter are additionally provided on institute's displacement sensors mounting rack 9 91 with the groove on the shift fork of shift fork system for matching, to realize the limitation to shift fork system moving displacement.In shift fork system The sensor to match with displacement sensor 8 is provided on the shift fork of system, for being monitored to the displacement of shift fork system motion.It moves Dynamic 91 moving range of locating part is limited in the groove of shift fork, is realized by the limitation to shift fork shift position entire The limitation of 60 moving range of shift fork axle avoids the excessive damage for causing component of 60 amount of movement of shift fork axle.
Further, the pedestal 1 is arranged on the first rotating frame 30, and the both ends of the pedestal 1 are symmetrically arranged with First turn hole 13 is provided with the first rotary shaft with first turn hole 13 cooperation on first rotating frame 30.The bottom Seat 1 is rectangular configuration, and first turn hole 13 is located on the symmetry axis of the pedestal 1.Pedestal 1 passes through the first turn hole 13 and the The cooperation of one rotary shaft realizes the rotation around the first rotating frame 30, to simulate the impact of different angle oil duct to shift fork The influence of system.
First rotating frame 30 is arranged on second rotating frame 40, the two sides of first rotating frame 30 It is symmetrically arranged with the second turn hole 301, second with second turn hole 301 cooperation is provided on second rotating frame 40 Rotary shaft 401;And the central axis of the central axis of second rotary shaft 401 and first rotary shaft.Second rotation The extending direction of shaft 401 is vertical with the extending direction of the first cylinder sleeve fixing pipe 2.The purpose designed in this way is to enable pedestal The rotation for enough realizing left-right and front-back direction, can simulate influence of the oil shock of more perspective to shift fork system.
Further, angle measuring mechanism 50 is provided on first rotating frame 30.For measure pedestal 1 relative to The angle for the rotation that first rotating frame 30 occurs.
Structure, feature and effect of the invention, the above institute are described in detail based on the embodiments shown in the drawings Only presently preferred embodiments of the present invention is stated, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention Think made change or equivalent example modified to equivalent change, when not going beyond the spirit of the description and the drawings, It should all be within the scope of the present invention.

Claims (8)

1. a kind of shift fork system test tooling characterized by comprising pedestal, the first cylinder sleeve fixing pipe, the first cylinder sleeve, first Piston, the second cylinder sleeve fixing pipe, the second cylinder sleeve, second piston and displacement sensor;
First support and second support are arranged at intervals on the pedestal;
The first cylinder sleeve fixing pipe is fixed in the first support, and first cylinder sleeve is fixed on first cylinder sleeve and fixes In the first accommodating chamber on pipe;And the first cylinder sleeve cavity is provided on first cylinder sleeve, the first piston and described first Cylinder sleeve cavity is slidably matched, and the first piston and the first end of the shift fork axle of shift fork system to be detected offset;
The first oil duct connector, the first oil duct fittings the first oil duct transfer tube are provided in the first cylinder sleeve fixing pipe With the first cylinder sleeve cavity, the first oil duct transfer tube is connect with oil-control mechanism;
The second cylinder sleeve fixing pipe is fixed in the second support, and second cylinder sleeve is fixed on second cylinder sleeve and fixes In the second accommodating chamber on pipe;And the second cylinder sleeve cavity is provided on second cylinder sleeve, the second piston and described second Cylinder sleeve cavity is slidably matched;And the second end of the second piston and the shift fork axle of shift fork system to be detected offsets;
The second oil duct connector, the second oil duct connector connection the second oil duct switching are provided in the second cylinder sleeve fixing pipe Pipe and the second cylinder sleeve cavity, the second oil duct transfer tube are connect with oil-control mechanism;
Institute's displacement sensors are fixed on the pedestal, for detecting the movement of shift fork system to be detected;
The pedestal is arranged on the first rotating frame, and the both ends of the pedestal are symmetrically arranged with the first turn hole, and described first The first rotary shaft with first turn hole cooperation is provided on rotating frame;
First rotating frame is arranged on the second rotating frame, and the monosymmetric of first rotating frame is provided with the Two turn holes are provided with the second rotary shaft with second turn hole cooperation on second rotating frame;And second rotation The central axis of the central axis of axis and first rotary shaft.
2. shift fork system test tooling according to claim 1, it is characterised in that: first adapter is provided with more It is a;Second adapter is provided with multiple.
3. shift fork system test tooling according to claim 1, it is characterised in that: the bottom end of the first support passes through spiral shell Bolt is fixed on the base, and the top of the first support is provided with mounting portion, and the mounting portion and first cylinder sleeve are solid Determine pipe to match.
4. shift fork system test tooling according to claim 1, it is characterised in that: institute's displacement sensors are fixed on displacement On sensor mount, institute's displacement sensors mounting rack is fixed on the base.
5. shift fork system test tooling according to claim 4, it is characterised in that: on institute's displacement sensors mounting rack also It is provided with travel limiter, the travel limiter with the groove on the shift fork of shift fork system for matching, to realize to dialling The limitation of fork system moving displacement.
6. shift fork system test tooling according to claim 1, it is characterised in that: the extending direction of second rotary shaft It is vertical with the extending direction of the first cylinder sleeve fixing pipe.
7. according to any shift fork system test tooling of claim 6, it is characterised in that: the pedestal is rectangular configuration, And first turn hole is located on the symmetry axis of the pedestal.
8. shift fork system test tooling according to claim 1, it is characterised in that: be provided on first rotating frame Angle measuring mechanism.
CN201811159705.2A 2018-09-30 2018-09-30 A kind of shift fork system test tooling Active CN109211590B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811159705.2A CN109211590B (en) 2018-09-30 2018-09-30 A kind of shift fork system test tooling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811159705.2A CN109211590B (en) 2018-09-30 2018-09-30 A kind of shift fork system test tooling

Publications (2)

Publication Number Publication Date
CN109211590A CN109211590A (en) 2019-01-15
CN109211590B true CN109211590B (en) 2019-09-24

Family

ID=64982672

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811159705.2A Active CN109211590B (en) 2018-09-30 2018-09-30 A kind of shift fork system test tooling

Country Status (1)

Country Link
CN (1) CN109211590B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112729812B (en) * 2020-12-16 2022-12-09 金华市詹士汽车配件有限公司 Detection device for automobile shifting fork and application method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205246335U (en) * 2015-12-26 2016-05-18 江西省广蓝传动科技股份有限公司 Shift fork fatigue test platform of shifting
CN205333307U (en) * 2016-01-27 2016-06-22 长城汽车股份有限公司 A experimental frock for shift fork capability test
CN206206568U (en) * 2016-09-20 2017-05-31 上海汽车变速器有限公司 Speed changer electromechanical execution system
CN206132389U (en) * 2016-11-02 2017-04-26 安徽江淮汽车集团股份有限公司 Derailleur shift fork assembly detection device
CN206339191U (en) * 2016-12-26 2017-07-18 重庆越发机械制造有限公司 Shift shift fork concentricity detection frock

Also Published As

Publication number Publication date
CN109211590A (en) 2019-01-15

Similar Documents

Publication Publication Date Title
CN109211590B (en) A kind of shift fork system test tooling
CN207502127U (en) A kind of camshaft air-tightness and oilhole plug compressive property detection device
CN204556408U (en) A kind of composite bimetal pipe bend test device
CN105372174B (en) A kind of packaged type coefficient of frictional resistance test device
CN104197879A (en) Displacement sensor following mechanism for testing thickness of sliding boot pair oil film
CN103398826B (en) A kind of valve seal detection device and valve seal detection device group
CN214310300U (en) Pipeline magnetic leakage internal detector
CN112284221A (en) Utensil of examining that machining multi-field was used
CN116481709B (en) Pressure sensor accuracy detection device
CN207556722U (en) It is a kind of for the pretightning force of oil connection and friction torque measuring device
CN204115973U (en) A kind of air tightness detection apparatus of automobile exhaust pipe
CN104454490B (en) Device for measuring the stroke of the rod of a hydraulic cylinder
CN103486999B (en) High-precision angle under a kind of hot vacuum environment and torsion-testing apparatus
CN207858206U (en) Differential carrier assembles detection device
CN108387375A (en) A kind of bearing mnanufacture experimental rig
CN113092023A (en) Special air tightness detection device for ultra-thin long pipe
CN107271114A (en) Automobile engine crankshaft damper air-tightness detection device of shell body
CN207779649U (en) A kind of recoil rebound test device of car clutch pedal
CN206470336U (en) One kind is used for the quick locating and detecting device of frequency converter high accuracy
CN202708599U (en) Pipeline detection conveying device
CN202083409U (en) Protective box of test bench in environmental test chamber
CN206515027U (en) Gas examines frock and gas check system
CN219082585U (en) Pipeline inner wall detection robot
CN206223435U (en) Variable-angle electric-machine directly-driven shaft coupling life test machine
CN110925604B (en) Pipeline joint pressure detection device capable of preventing leakage

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province

Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd

Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province

Applicant before: Anhui Jianghuai Automobile Group Limited by Share Ltd

GR01 Patent grant
GR01 Patent grant