CN206665477U - Guide wheel group and mobile device - Google Patents
Guide wheel group and mobile device Download PDFInfo
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- CN206665477U CN206665477U CN201720421671.4U CN201720421671U CN206665477U CN 206665477 U CN206665477 U CN 206665477U CN 201720421671 U CN201720421671 U CN 201720421671U CN 206665477 U CN206665477 U CN 206665477U
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- guide wheel
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- wheel group
- wheel
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Abstract
This application discloses guide wheel group and mobile device.The guide wheel group includes：Adjust guide wheel group, stator wheel group and support frame；Regulation guide wheel group is located at the side of support frame, and adjusts regulation directive wheel of the guide wheel group including regulation guide wheel shaft and on regulation guide wheel shaft, regulation guide wheel shaft and support frame elastic connection, adjusts the wheel face of directive wheel and is contacted with the first side of track；Stator wheel group is located at the opposite side of support frame, and stator wheel group includes fixed guide wheel shaft and the stator wheel on fixed guide wheel shaft, fixed guide wheel shaft is fixedly connected with support frame, the wheel face of stator wheel contacts with the second side of track, wherein, first side and second side are two sides relative in track.The embodiment can make the wheel face of the directive wheel in the guide wheel group contacts side surfaces with track all the time, with ensure along the equipment of rail running rollover or deflection do not occur while, reduce the abrasion of directive wheel.
Description
Technical field
The application is related to automated warehousing technical field, and in particular to guide wheel group and mobile device.
Background technology
At present, in order to ensure the running wheel in the equipment that moves along track is without departing from track, generally require to ensure equipment
There is good centering between track.Ensure that the scheme of equipment and track centering mainly has in the prior art：When
Running wheel both sides increase wheel rim, and roller edge and track side surfaces carry out spacing；Second, matching somebody with somebody using special-shaped wheel and special-shaped track
Close (such as V-arrangement wheel and V-arrangement rail) coordinate it is spacing；Third, increase side guide wheel, directive wheel is fixed on car body in pairs, along rail
It is spacing that road two sides roll progress.
However, these schemes all use rigid limit substantially.Among actual motion, due to the reason such as track is not straight, if
It is standby that deflection occurs in moving process.Huge friction is so produced between wheel and track, causes wheel gnawing rail or directive wheel
Stress is stuck or even damages.
Utility model content
In view of drawbacks described above of the prior art, the embodiment of the present application provides a kind of improved guide wheel group and movement is set
It is standby, to solve the technical problem that background section above is mentioned.
To achieve these goals, in a first aspect, the embodiment of the present application provides a kind of guide wheel group, the guide wheel group bag
Include：Adjust guide wheel group, stator wheel group and support frame；Regulation guide wheel group is located at the side of support frame, and adjusts and be oriented to
Wheel group includes regulation guide wheel shaft and the regulation directive wheel on regulation guide wheel shaft, regulation guide wheel shaft and support frame bullet
Property connection, adjust the wheel face of directive wheel and contacted with the first side of track；Stator wheel group is located at the opposite side of support frame, and
Stator wheel group includes fixed guide wheel shaft and the stator wheel on fixed guide wheel shaft, fixed guide wheel shaft with
Support frame is fixedly connected, and the wheel face of stator wheel contacts with the second side of track, wherein, first side and second side are
Two relative sides in track.
In certain embodiments, regulation guide wheel group includes movable rod, and regulation directive wheel is arranged at regulation guide wheel shaft
One end, regulation guide wheel shaft is connected with movable rod, movable rod and support frame elastic connection.
In certain embodiments, adjust directive wheel to be connected by self-aligning bearing with regulation guide wheel shaft, adjust guide wheel shaft
It is hinged with one end of movable rod, the other end of movable rod realizes elastic connection, and elasticity with support frame by elastomeric element
Part and regulation directive wheel are located at the not homonymy of support frame.
In certain embodiments, the other end of movable rod is provided with screw thread, and elastomeric element is set on movable rod, and
Fixed by nut, so that elastomeric element is in compressive state.
In certain embodiments, sleeve pipe is additionally provided between elastomeric element and nut, as nut is screwed into movable rod, set
Pipe extrudes elastomeric element.
In certain embodiments, the other end of movable rod is provided with screw thread, and elastomeric element is set on movable rod, and
Fixed by threaded sleeve, so that elastomeric element is in compressive state.
In certain embodiments, elastomeric element includes following at least one：Disk spring, flat spring, helical spring or rubber
Glue spring.
In certain embodiments, adjusting guide wheel group also includes fixed connecting rod, adjusts the other end and the fixation of guide wheel shaft
One end of connecting rod is hinged, and the other end of fixed connecting rod is fixedly connected with support frame.
Second aspect, the embodiment of the present application provide a kind of mobile device, and the mobile device includes any in first aspect
The guide wheel group of implementation description.
In certain embodiments, mobile device includes multiple wheels, and each wheel is along rail running；Along same rail running
Each wheel at least two wheels at be provided with guide wheel group, and guide wheel group passes through support frame and fixed with mobile device and connects
Connect.
The guide wheel group and mobile device that the embodiment of the present application provides, pass through the regulation directive wheel positioned at the side of support frame
Regulation guide wheel shaft and support frame elastic connection in group, the wheel of regulation directive wheel being arranged on regulation guide wheel shaft can be made
Gap between face and the first side of track is adjustable.Fixation in the stator wheel group of the opposite side of support frame simultaneously
Guide wheel shaft is fixedly connected with support frame, can make the wheel face and track of stator wheel being arranged on fixed guide wheel shaft
Gap between second side is fixed.So, when occur track it is not straight when, can be automatically adjusted and led by elastic connection
The stress between regulation directive wheel and stator wheel into wheel group, so as to ensure have well between equipment and track
While centering, the wheel face of directive wheel and the friction of track side surfaces are reduced, advantageously reduces the abrasion or stuck of directive wheel.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the application's is other
Feature, objects and advantages will become more apparent upon：
The structural representation of the one embodiment for the equipment of the prior art moved along track that Fig. 1 (a) is；
The structural representation of another embodiment of the equipment of the prior art moved along track that Fig. 1 (b) is；
The structural representation of another embodiment of the equipment of the prior art moved along track that Fig. 1 (c) is；
Fig. 1 (d) is the structure top view of the equipment moved along track shown in Fig. 1 (c)；
Fig. 2 is the structural representation of the one embodiment for the guide wheel group that the application provides；
Fig. 3 is the structural representation of another embodiment of the guide wheel group that the application provides；
Fig. 4 is the structural representation of the one embodiment for the mobile device that the application provides；
Fig. 5 is the structure top view of the mobile device shown in Fig. 4.
Embodiment
The principle and feature of the application are described in further detail with reference to the accompanying drawings and examples.It is appreciated that
It is that specific embodiment described herein is used only for explaining relevant utility model, rather than the restriction to the utility model.In addition
It should also be noted that, for the ease of describing, the part related to utility model is illustrate only in accompanying drawing.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 (a)-(c) is referred to, it illustrates the knot of three kinds of embodiments of the equipment of the prior art moved along track
Structure schematic diagram.
As shown in Fig. 1 (a), the dolly travelled along track 10 can include car body 11, common wheel 12 and with wheel flange wheel
13.Wherein, band wheel flange wheel 13 is along same rail running.Now, the radius size of wheel rim is typically larger than the radius size of wheel.
So coordinated by the side of wheel rim and track 10, so as to carry out spacing control to the dolly of traveling.
For another example shown in Fig. 1 (b), car body 11, common wheel 12 and special-shaped wheel 13 can be included along the dolly of rail running.
Wherein, special-shaped wheel 13 is equally along same rail running.And the track 10 that special-shaped wheel 13 is travelled also is abnormity.It is so logical
The cooperation of special-shaped wheel and special-shaped track is crossed, so as to carry out spacing control to the dolly of traveling.
Due to being spacing by wheel and track cooperation in Fig. 1 (a) and Fig. 1 (b), so when dolly is because of a variety of causes
When deflection traveling occurs in (track deformation is not straight or load-bearing is unequal), produced between band wheel flange wheel or special-shaped wheel meeting and track
Huge friction, while produce harsh noise.Long-play will cause the heavy wear of wheel and track, that is, gnaw rail and show
As.On the other hand, transmission mechanism need to overcome bigger resistance when deflection is walked, and can reduce the drive efficiency of motor.
The dolly for continuing as shown in Fig. 1 (c), to travel along track 10, which can include car body 11, common wheel 12 and fixation, leads
To wheel 13.Side of the stator wheel 13 along track 10 rotates.It was found from from the top view shown in Fig. 1 (d), stator wheel 13
Generally it is arranged in pairs, and is symmetrically installed relative to dolly travel direction.So by the cooperation of stator wheel and track side surfaces,
So as to carry out spacing control to the dolly of traveling.
However, the gap between stator wheel and track side surfaces is difficult to adjust.If gap is excessive, pair of dolly and track
Neutrality cannot be guaranteed, and easily glance off.If gap is too small or does not stay gap, when run into that track is not straight or two parallel track degree not
When good, stator wheel is easily stuck by the active force of track side surfaces or even crowded bad.Therefore, present applicant proposes one kind to change
The guide wheel group entered, while the centering of dolly and track is ensured, reduce the abrasion between directive wheel and track.
Fig. 2 is referred to, the structural representation of one embodiment of the guide wheel group provided it illustrates the application.Such as Fig. 2
Shown, the guide wheel group of the application can include regulation guide wheel group, stator wheel group and support frame 20.
In the present embodiment, regulation guide wheel group is located at the side of support frame 20.And regulation guide wheel group can include adjusting
Save guide wheel shaft 211 and the regulation directive wheel 212 on regulation guide wheel shaft 211.Adjusting guide wheel shaft 211 can be with branch
The elastic connection of support 20.The wheel face for adjusting directive wheel 212 simultaneously contacts with the first side of track 23.
In addition, stator wheel group is located at the opposite side of support frame 20.And stator wheel group can include fixed guide
Wheel shaft 221 and the stator wheel 222 on fixed guide wheel shaft 221.Fixed guide wheel shaft 221 can be with support frame 20
It is fixedly connected and (such as passes through screw bolt and nut).The wheel face of stator wheel 222 contacts with the second side of track 23 simultaneously.Its
In, first side and second side is two sides relative in track 23, i.e., the plane phase travelled with wheel 24 along track 23
Two adjacent sides.It is understood that the shape of support frame is not limited to U-shaped shown in figure, can enter according to the actual requirements
Row is set.And adjust guide wheel group and stator wheel group not limit equally relative to the position relationship of support frame.
From figure 2 it can be seen that when track bends, directive wheel 212 is either adjusted by the first of track 23
The active force to the left of side, or stator wheel 222 are eventually passed through by the active force to the right of the second side of track 23
The elastic connection between guide wheel shaft 211 and support frame 20 is adjusted and adjusted, to enter row buffering to suffered active force
And discharge.So ensure regulation directive wheel wheel face and stator wheel wheel face respectively with the first side of track and second
While contacts side surfaces, the frictional force between regulation directive wheel and stator wheel and track is advantageously reduced, is led so as to reduce
Abrasion to wheel group and track.
The present embodiment some alternatively in implementation, regulation guide wheel group can also include movable rod 213.From
Understood in Fig. 2, regulation directive wheel 212 can be arranged at one end of regulation guide wheel shaft 211.Simultaneously adjust guide wheel shaft 211 with
Movable rod 213 connects, and movable rod 213 can be with the elastic connection of support frame 20.As an example, regulation directive wheel 212 is with adjusting
Section guide wheel shaft 211 can be connected by self-aligning bearing.So, when regulation guide wheel shaft 211 is because stress is bent or is tilted so that
When the inner ring center line of bearing is no more than 1 °~2.5 ° with outer ring center line relative tilt, bearing remains to work, so as to protect
Card regulation directive wheel 212 runs well.One end of regulation guide wheel shaft 211 and movable rod 213 is hinged, so that regulation directive wheel
Axle 211 can rotate relative to movable rod 213.The other end of movable rod 213 passes through elastomeric element 214 with support frame 20 simultaneously
Realize elastic connection.And elastomeric element 214 and regulation directive wheel 212 are located at the not homonymy of support frame 20.It can so ensure
Elastomeric element plays a part of adjustment effect power.It should be noted that installation position of the regulation directive wheel on regulation guide wheel shaft
Putting can be configured according to actual conditions.And the position relationship of elastomeric element and stator wheel group is in this application not
Limitation.
Alternatively, the other end of movable rod 213 can be provided with screw thread.Now, elastomeric element 214 can be set in work
On dynamic connecting rod 213, and fixed by nut, so that elastomeric element 214 is in compressive state.That is, make elastomeric element 214
With certain pretightning force.So when active force of the guide wheel group by track, it can be acted in the pretightning force of elastomeric element
Under be eliminated release.It is understood that when movable rod 213 is longer, and the screw thread on movable rod 213 is shorter, it is
It is poor to make up length dimension, between elastomeric element 214 and nut is also provided with sleeve pipe.As nut is along movable rod 213
Movable rod 213 is threaded on one end, sleeve pipe can extrude elastomeric element 214, to make it have certain pretightning force.This
When, in the case of meet demand, the length of elastomeric element can also be reduced.
As an example, because the other end of movable rod 213 is provided with screw thread, elastomeric element 214 is set in movable rod
, can also be by being fixed with female threaded sleeve, so that elastomeric element 214 is in compressive state on 213.So exist
While meet demand, the quantity of parts is advantageously reduced, so as to reduce production cost.
In addition, in order to ensure to adjust the stability that is connected with support frame of guide wheel group, adjusting guide wheel group can also include
Fixed connecting rod 215.The one end for adjusting the other end and fixed connecting rod 215 of guide wheel shaft 211 is hinged, and fixed connecting rod 215 is another
One end is fixedly connected with support frame 20.It is solid by nut and support frame 20 such as the other end of fixed connecting rod 215 is provided with screw thread
It is fixed.
It is understood that elastomeric element can be including but not limited to following at least one：Disk spring, flat spring,
Helical spring or rubber spring.In addition, from figure 2 it can be seen that because movable rod 213 and fixed connecting rod 215 have screw thread
One end be respectively positioned on the inside of support frame 20, can be in the opposite side (fixed guide of support frame so for the ease of fixing nut
Side where wheel group) open up hole.In addition, can be relative to movable rod 213 and fixation in order to ensure to adjust guide wheel shaft 211
Connecting rod 215 rotates, and adjusting between guide wheel shaft 211 and support frame 20 has certain gap.Machine can also be used in the application
Being fixedly connected between the implementation progress parts commonly used in tool structure, such as would generally be put into before nut is screwed into bolt
Pad etc., here is omitted.
With continued reference to Fig. 3, it is the structural representation of another embodiment of the guide wheel group that the application provides.
It is that the guide wheel group in the present embodiment also includes regulation directive wheel with the guide wheel group identical in Fig. 2 embodiments
Group, stator wheel group (not shown) and support frame 20.Regulation guide wheel shaft 211 can be included, adjust by adjusting guide wheel group
Save directive wheel 212, movable rod 213, elastomeric element 214, fixed connecting rod 215.Stator wheel group includes fixed guide wheel shaft
And stator wheel.Position relationship between regulation guide wheel group, stator wheel group and support frame 20 may refer to Fig. 2 implementations
Associated description in example, here is omitted.
Unlike the guide wheel group in Fig. 2 embodiments, for the ease of movable rod 213 and/or fixed connecting rod 215 with
Being fixedly connected between support frame 20, movable rod 213 and/or fixed connecting rod 215 in the present embodiment can penetrate support frame
20.So nut is located at the outside easy disassembly of support frame 20.Now, still can (but not limiting) by sleeve pipe and nut by bullet
Property part 214 is fixed on the inside of support frame 20.As an example, elastomeric element 214 can also be fixed on the another of support frame 20
Side (i.e. with stator wheel group homonymy).
Present invention also provides a kind of mobile device.The mobile device can include the guiding described in the various embodiments described above
Wheel group.The display device can be the various equipment along rail running, the shuttle (shuttle) in such as automated warehousing.
Can be with further reference to Fig. 4, it is the structural representation of the one embodiment for the mobile device that the application provides.
In the present embodiment, mobile device can include multiple wheels, and each wheel is along rail running.Along same track row
Guide wheel group is provided with least two wheels in each wheel sailed, and guide wheel group is fixed by support frame and mobile device
Connection.As shown in figure 4, the mobile device travelled along two parallel orbits 40 can include car body 41, wheel 42 and guide wheel group
43.Guide wheel group 43 is fixedly connected by support frame with car body 41.And at two wheels 42 travelled along same track 40
It is provided with guide wheel group 43.Fig. 5 specifically is may refer to, it illustrates the structure top view of the mobile device.
From figure 5 it can be seen that in order to avoid being interfered in structure, the regulation guide wheel group in guide wheel group 43 is with consolidating
Determine guide wheel group to be not symmetrical arranged.It is understood that the relative position of guide wheel group and stator wheel group is adjusted in figure
Relation, guide wheel group 43 and the relative position relation of wheel 42 are only schematical.Meanwhile in order to preferably play directive wheel
Group effect, when exist three and with last wheel along same rail running when, can be at least in first and last
Guide wheel group is set at wheel, so advantageously ensures that stable traveling.
When installing guide wheel group, first support frame and car body 41 can be fixed；Then fixation is loaded onto on support frame to lead
To wheel group, the wheel face of stator wheel is set to press close to the side of track 40；The installation and adjustment guide wheel group on support frame again afterwards, makes
The wheel face of regulation directive wheel presses close to the another side of track 40；Finally by the nut tightened on movable rod, make elastomeric element
In compressive state.In the presence of elastomeric element and movable rod, the wheel face of stator wheel and the wheel face of regulation directive wheel
The two sides of track 40 can be close to, so as to ensure that the good centering of wheel 42 and track 40.Due in the application
Flexible limit is used between guide wheel group and track, so when track is not straight, regulation guide wheel group can be movable therewith, such two
The wheel face of kind directive wheel can be close to track side surfaces all the time, nor stuck situation occurs.When dolly is by lateral impact,
Elastomeric element can play cushioning effect, will not damage two kinds of directive wheels.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that utility model scope involved in the application, however it is not limited to what the particular combination of above-mentioned technical characteristic formed
Technical scheme, while should also cover in the case where not departing from utility model design, by above-mentioned technical characteristic or its equivalent feature
The other technical schemes for being combined and being formed.Such as features described above has class with (but not limited to) disclosed herein
The technical scheme replaced mutually and formed like the technical characteristic of function.
Claims (10)
1. a kind of guide wheel group, it is characterised in that the guide wheel group includes：Adjust guide wheel group, stator wheel group and branch
Support；
The regulation guide wheel group be located at the side of support frame as described above, and the regulation guide wheel group include regulation guide wheel shaft with
Regulation directive wheel on the regulation guide wheel shaft, the regulation guide wheel shaft and support frame as described above elastic connection, institute
The wheel face for stating regulation directive wheel contacts with the first side of track；
The stator wheel group is located at the opposite side of support frame as described above, and the stator wheel group includes fixed guide wheel shaft
With the stator wheel on the fixed guide wheel shaft, the fixed guide wheel shaft is fixedly connected with support frame as described above,
The wheel face of the stator wheel contacts with the second side of the track, wherein, the first side and the second side
For two sides relative in the track.
2. guide wheel group according to claim 1, it is characterised in that the regulation guide wheel group includes movable rod, institute
One end that regulation directive wheel is arranged at the regulation guide wheel shaft is stated, the regulation guide wheel shaft is connected with the movable rod,
The movable rod and support frame as described above elastic connection.
3. guide wheel group according to claim 2, it is characterised in that the regulation directive wheel and the regulation guide wheel shaft
Connected by self-aligning bearing, it is described regulation guide wheel shaft and the movable rod one end be hinged, the movable rod it is another
Elastic connection is realized in end with support frame as described above by elastomeric element, and the elastomeric element and the regulation directive wheel are positioned at described
The not homonymy of support frame.
4. guide wheel group according to claim 3, it is characterised in that the other end of the movable rod is provided with screw thread,
The elastomeric element is set on the movable rod, and fixed by nut, so that the elastomeric element is in compressive state.
5. guide wheel group according to claim 4, it is characterised in that also set up between the elastomeric element and the nut
There is sleeve pipe, as the nut is screwed into the movable rod, described sleeve pipe extrudes the elastomeric element.
6. guide wheel group according to claim 3, it is characterised in that the other end of the movable rod is provided with screw thread,
The elastomeric element is set on the movable rod, and fixed by threaded sleeve, so that the elastomeric element is in compression
State.
7. guide wheel group according to claim 3, it is characterised in that the elastomeric element includes following at least one：Dish
Shape spring, flat spring, helical spring or rubber spring.
8. according to the guide wheel group described in one of claim 2-7, it is characterised in that the regulation guide wheel group also includes fixing
Connecting rod, one end of the other end and the fixed connecting rod of the regulation guide wheel shaft is hinged, and the other end of the fixed connecting rod
It is fixedly connected with support frame as described above.
9. a kind of mobile device, it is characterised in that the mobile device includes the directive wheel as described in one of claim 1-8
Group.
10. mobile device according to claim 9, it is characterised in that the mobile device includes multiple wheels, each described
Wheel is along rail running；
The guide wheel group, and the directive wheel are provided with least two wheels in each wheel along same rail running
Group is fixedly connected by support frame with the mobile device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720421671.4U CN206665477U (en) | 2017-04-20 | 2017-04-20 | Guide wheel group and mobile device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720421671.4U CN206665477U (en) | 2017-04-20 | 2017-04-20 | Guide wheel group and mobile device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206665477U true CN206665477U (en) | 2017-11-24 |
Family
ID=60375609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720421671.4U Active CN206665477U (en) | 2017-04-20 | 2017-04-20 | Guide wheel group and mobile device |
Country Status (1)
| Country | Link |
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| CN (1) | CN206665477U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649981A (en) * | 2018-12-29 | 2019-04-19 | 铜陵天奇蓝天机械设备有限公司 | A kind of automation carrying roller handling system for belt feeder |
| CN111217097A (en) * | 2020-01-09 | 2020-06-02 | 湘潭大学 | Guide wheel device with adjustable wheel rail compression degree |
| CN115140469A (en) * | 2022-05-25 | 2022-10-04 | 山东蓝帆化工有限公司 | Stereoscopic warehouse tunnel stacker |
-
2017
- 2017-04-20 CN CN201720421671.4U patent/CN206665477U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649981A (en) * | 2018-12-29 | 2019-04-19 | 铜陵天奇蓝天机械设备有限公司 | A kind of automation carrying roller handling system for belt feeder |
| CN111217097A (en) * | 2020-01-09 | 2020-06-02 | 湘潭大学 | Guide wheel device with adjustable wheel rail compression degree |
| CN115140469A (en) * | 2022-05-25 | 2022-10-04 | 山东蓝帆化工有限公司 | Stereoscopic warehouse tunnel stacker |
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Effective date of registration: 20210308 Address after: Room a1905, 19 / F, building 2, No. 18, Kechuang 11th Street, Daxing Economic and Technological Development Zone, Beijing 100176 Patentee after: Beijing Jingdong Qianshi Technology Co.,Ltd. Address before: 101, 1st floor, building 2, yard 20, Suzhou street, Haidian District, Beijing 100080 Patentee before: Beijing Jingbangda Trading Co.,Ltd. Effective date of registration: 20210308 Address after: 101, 1st floor, building 2, yard 20, Suzhou street, Haidian District, Beijing 100080 Patentee after: Beijing Jingbangda Trading Co.,Ltd. Address before: 100080 Haidian District, Beijing, 65 Xing Shu Kou Road, 11C, west section of the western part of the building, 1-4 stories West 1-4 story. Patentee before: BEIJING JINGDONG SHANGKE INFORMATION TECHNOLOGY Co.,Ltd. Patentee before: BEIJING JINGDONG CENTURY TRADING Co.,Ltd. |