CN102745226A - Electric sedan with swing door and capable of turning fixedly - Google Patents
Electric sedan with swing door and capable of turning fixedly Download PDFInfo
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- CN102745226A CN102745226A CN201210255069XA CN201210255069A CN102745226A CN 102745226 A CN102745226 A CN 102745226A CN 201210255069X A CN201210255069X A CN 201210255069XA CN 201210255069 A CN201210255069 A CN 201210255069A CN 102745226 A CN102745226 A CN 102745226A
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Abstract
The invention discloses an electric sedan with a swing door and capable of turning fixedly. The electric sedan comprises a shell frame, a power driving device, a turning device and a power supplying device; and the turning device comprises a steering wheel, a rotating shaft, a turning limiting device, a universal joint, a chain wheel, a transmission chain, a front wheel bracket, a direction adjusting handle and a bound chain wheel. According to the creativity of the invention, a wheel shaft between front wheels is canceled, and the direction adjusting handle is additionally arranged at one side and used for independently adjusting a turning angle of the front wheel at one side, so that the two front wheels are unnecessary to obey the rule that the traditional front wheels must be in parallel in the process of turning a large angle, but the front wheels turn fixedly in a manner of being tangent to a circle which uses the middle point of a rear wheel axis as a circle center and uses the distance from the middle point of the rear wheel axis to the geometric center of the front wheels as a radius, therefore the space required for turning and turning round is furthest reduced, and the time of a driver is saved.
Description
Technical field:
The present invention relates to electric automobiles, particularly a kind of pivot stud revolving door electrocar.
Background technology:
Along with popularizing of automobile, battery-driven car; Road is more and more crowded; Especially run into traffic congestion, on and off duty and last morning market, car and car, car and people suffer very closely, or in residential quarters, compare on the narrow lane; General vehicle is lost time thereby when running into said circumstances, can only wait or turn to slowly owing to can't accomplish pivot stud, turn around or be similar to pivot stud.
Summary of the invention:
In view of this, be necessary to provide a kind of pivot stud revolving door electrocar.
A kind of pivot stud revolving door electrocar comprises: casing frame, Power Drive Unit, steering hardware, energy generator; Wherein Power Drive Unit is positioned at the casing frame bottom; Casing frame is used for fixing, places other device provides placement simultaneously for chaufeur, goods place; Steering hardware is positioned on the front end, Power Drive Unit of casing frame, and energy generator is positioned on the rear, Power Drive Unit of casing frame; Steering hardware comprises: bearing circle, rotating shaft, limiting steering device, universal-joint, sprocket wheel, messenger chain, front-wheel support, direction regulating handle, constraint sprocket wheel; Power Drive Unit comprises: the near front wheel and off front wheel; On each front-wheel, be provided with front-wheel support; Front-wheel support is shaped as is with a bonded assembly flat-bed of one three openings front fork; And platform is parallel to the ground, and the end that front-wheel support stretches to the front-wheel wheel shaft is connected with front-wheel through bearing, on platform, welds one section vertical pivot perpendicular to platform and perpendicular to the position of front-wheel geometric centre; Vertical pivot is provided with two pressure bearings coaxial with it up and down; Be the counterpart of casing frame between two pressure bearings, front-wheel support and casing frame fixed, make front-wheel support opposite shell framework can only do to horizontally rotate through two pressure bearings; Be welded with the sprocket wheel parallel with platform in the position near the vertical pivot top, the sprocket wheel specification on two front-wheel supports is in full accord, but coplane not; Be with the direction regulating handle on a vertical pivot therein; Handle end stretches to operator's compartment; Axle head is a crank; But with the vertical pivot is center of circle left-right rotation, and the constraint sprocket wheel of former and later two horizontal positioned is set on the face of the side in crank leans on car, and the sprocket wheel coplane on the vertical pivot at constraint sprocket wheel and its place; The end of the rotating shaft of universal-joint one end closure dish, the other end is perpendicular to ground and be fixed on the correspondence position of casing frame, and is fixed with two sprocket wheels up and down on its vertical end, they respectively be positioned at two sprocket wheel coplanes on the front-wheel support; Article two, messenger chain meshes with pair of sprocket respectively; This comprises sprocket wheel and a sprocket wheel on front-wheel support on the universal-joint to sprocket wheel; Wherein the messenger chain in direction regulating handle one side passes between two constraint sprocket wheels, and with two the constraint sprocket engagement, rotate around vertical pivot through making these two constraint sprocket wheels; Thereby the drive messenger chain, and then the front-wheel that drives this side can obtain an extra corner when pivot stud.
Preferably, be fixed in the sprocket wheel on the universal-joint, near the sprocket wheel coplane on the front-wheel support in ground-surface sprocket wheel and operator's compartment left side, they link with a messenger chain; Away from the sprocket wheel coplane on the front-wheel support on ground-surface sprocket wheel and operator's compartment right side, they are with another messenger chain link.
Preferably, Power Drive Unit includes two trailing wheels, and two trailing wheels connect through hind axle.
Preferably; The direction regulating handle is positioned at the operator's compartment left side, and when battery-driven car was in cruising or non-pivot stud, the direction regulating handle was in the shelves that go; The mid point of two constraint centre of sprocket lines is positioned on the axis of sprocket wheel B and sprocket wheel C; The chain A that is positioned at the outside is in relative tension, be positioned at inboard chain B and be in relative relaxation state, this moment only direction of passage dish control front-wheel towards; When battery-driven car is wanted left face, first steering wheel rotation drive two front-wheels parallel turn over an angle A, at this moment; The line of segment axis center-point and the dead in line of off front wheel between the geometric centre of off front wheel and two trailing wheels; Forward the direction regulating handle to the pivot stud shelves again, in this process, two constraint sprocket wheels rotate counterclockwise around vertical pivot; Make chain B be in tension; Chain A is in relative relaxation state, rotates counterclockwise an angle B thereby make chain B drive sprocket wheel A along the tension direction, even the near front wheel conter clockwise turns over angle B; And no longer with off front wheel keeping parallelism, the line of segment axis center-point and the dead in line of the near front wheel between geometric centre of the near front wheel and two trailing wheels; At this moment; Battery-driven car is by f-w-d, trailing wheel as flower wheel with the center-point of segment axis between two trailing wheels be center of circle left-handed turning to, in particular; Two front-wheels and two trailing wheels rotate with two concentrically ringed tracks respectively, and the concentric circles radius at two front-wheels place is greater than two trailing wheels place concentric circles radius.
Preferably, through in rotating shaft or vertical pivot place the limiting steering device being set, the maximum angle that the moving front-wheel of direction of passage dribbling is rotated just is angle A.
Preferably, the rotating shaft of bearing circle and closure dish and universal-joint is positioned at the centre of operator's compartment.
Preferably, between open end of front-wheel support one side platform and front wheel spindle bearing sleeve, be provided with bumper.
Preferably, Power Drive Unit comprises two cover DC machine, output shaft; Wherein a cover is used for driving trailing wheel, another set ofly is used for driving front-wheel, and two cover DC machine, output shaft can be worked simultaneously, also can work independently.
Preferably, casing frame is metal all-closed band vehicle window, car door, preceding bonnet structure, and left-hand door is revolving door, its bottom be welded with parallel at the bottom of the car and be positioned at car at the bottom of above swinging mounting, the rotating shaft end of swinging mounting links to each other with at the bottom of the car through rotating shaft; Right door is a clamshell doors.
Preferably, energy generator can be storage battery or solar power.
The cancellation of the invention property the wheel shaft between the front-wheel; And set up the corner of direction regulating handle in order to independent adjusting one side front-wheel in a side, make and carrying out wide-angle when turning to that two front-wheels no longer receive traditional front-wheel must parallel constraint; But with later wheel axis mid point be the center of circle; To be that the garden of radius is tangent to the distance of front-wheel geometric centre carry out pivot stud to trailing wheel axis mid point, thereby reduce the needed space that turns to, turns around to greatest extent, and then save the time of chaufeur.In addition, left-hand door adopts the mode that rear side rotates in car, when making things convenient for the chaufeur turnover, does not take up room, and is adapted at crowded places such as parking area is got on or off the bus; In addition, when it is warm, opens the left-hand door driving and also be convenient to breathe freely, dispel the heat.
Description of drawings:
Accompanying drawing 2 is schematic perspective views of the left-hand door turn-off of a preferred embodiments pivot stud revolving door electrocar.
Accompanying drawing 3 is the Power Drive Unit of a preferred embodiments pivot stud revolving door electrocar and the schematic perspective view of steering hardware.
Accompanying drawing 4 is the steering hardware of a preferred embodiments pivot stud revolving door electrocar and the local enlarged diagram of part Power Drive Unit.
Accompanying drawing 5 is local enlarged diagrams of the strap drive chain of a preferred embodiments pivot stud revolving door electrocar.
Accompanying drawing 6 is principle schematic of carrying out pivot stud of a preferred embodiments pivot stud revolving door electrocar.
Among the figure: casing frame 1; Steering hardware 2; Power Drive Unit 4; Left-hand door 11; Swinging mounting 12; Rotating shaft end 12a; Bearing circle 21; Rotating shaft 22; Universal-joint 23; Sprocket wheel A24; Sprocket wheel B25; Front-wheel support 26; Platform 26a; Vertical pivot 27; Sprocket wheel D28; Bumper 29; Vertical pivot 31; Sprocket wheel C32; Messenger chain 33; Direction regulating handle 34; Constraint sprocket wheel 35; Constraint sprocket wheel 36; Messenger chain 37; Chain A37a; Chain B37b; Downforce bearing 38; Off front wheel 41; The near front wheel 42; Off hind wheel 43; Left rear wheel 44; Hind axle 45; Bearing carrier ring 46; Bearing 47; Axis 51; Angle A 52; Angle B 53; Axis 54; Axis 55; Circular trace 56; Circular trace 58
The specific embodiment:
As shown in Figure 1, a kind of pivot stud revolving door electrocar comprises: casing frame 1, Power Drive Unit 4, steering hardware 2, energy generator (not shown); Medium power actuating device 4 is positioned at casing frame 1 bottom; Casing frame 1 is used for fixing, places other device provides placement simultaneously for chaufeur, goods place; Steering hardware 2 is positioned on the front end, Power Drive Unit 4 of casing frame 1, and energy generator is positioned on the rear, Power Drive Unit 4 of casing frame 1.
Like Fig. 3, shown in Figure 4, steering hardware 2 comprises: bearing circle 21, rotating shaft 22, limiting steering device (not shown), universal-joint 23, sprocket wheel (comprising: sprocket wheel A24, sprocket wheel B25, sprocket wheel C32, sprocket wheel D28), messenger chain 33, messenger chain 37, front-wheel support 26, direction regulating handle 34, constraint sprocket wheel 35, constraint sprocket wheel 36.Power Drive Unit 4 comprises: the near front wheel and 42 off front wheel 41.On each front-wheel, be provided with front-wheel support 26; Front-wheel support 26 is shaped as the front fork with a bonded assembly platform of one three openings 26a; And platform 26a is parallel to the ground; The end that front-wheel support 26 stretches to the front-wheel wheel shaft is connected with front-wheel through bearing 47, on platform 26a, welds one section vertical pivot 27 perpendicular to platform 26a and perpendicular to the position of front-wheel geometric centre, and vertical pivot 27 is provided with two pressure bearings coaxial with it up and down; Be upward pressure bearing (not shown) and downforce bearing 38; Be the counterpart of casing frame 1 between two pressure bearings, front-wheel support 26 and casing frame 1 fixed, make front-wheel support 26 opposite shell frameworks 1 can only do to horizontally rotate through two pressure bearings; Be welded with sprocket wheel C32 and the sprocket wheel D28 parallel with platform 26a in the position near vertical pivot 27 tops, the sprocket wheel----on two front-wheel supports 26 is that sprocket wheel C32 and sprocket wheel D28 specification are in full accord, but coplane not; Be with direction regulating handle 34 on a vertical pivot 27 therein; Handle end stretches to operator's compartment; Axle head is a crank; But with vertical pivot 27 is center of circle left-right rotation, and the constraint sprocket wheel----that former and later two horizontal positioned are set on the face of the side in crank leans on car promptly fetters sprocket wheel 35 and constraint sprocket wheel 36, and sprocket wheel C32 or sprocket wheel D28 coplane on the vertical pivot 27 at constraint sprocket wheel 35 and constraint sprocket wheel 36 and its place; The end of the rotating shaft 22 of universal-joint 23 1 end closure dishes 21; The other end is perpendicular to ground and be fixed on the correspondence position of casing frame 1; And be fixed with two sprocket wheels up and down on its vertical end; Be respectively sprocket wheel A24 and sprocket wheel B25, they respectively be positioned at two sprocket wheel C32 or sprocket wheel D28 coplanes on the front-wheel support 26; Article two, messenger chain meshes with pair of sprocket respectively; This comprises sprocket wheel and a sprocket wheel on front-wheel support 26 on the universal-joint to sprocket wheel; Wherein the messenger chain 37 in direction regulating handle 34 1 sides passes from fettering between sprocket wheel 35 and the constraint sprocket wheel 36, and meshes with constraint sprocket wheel 35 and constraint sprocket wheel 36, rotates around vertical pivot 27 through making these two constraint sprocket wheels; Thereby drive messenger chain 37, and then the front-wheel that drives this side can obtain an extra corner when pivot stud.
In the present embodiment, be fixed in the sprocket wheel on the universal-joint 23, near the sprocket wheel C32 coplane on the front-wheel support 26 in ground-surface sprocket wheel B25 and operator's compartment left side, they are with 37 links of a messenger chain; Away from the sprocket wheel D28 coplane on the front-wheel support 26 on ground-surface sprocket wheel A24 and operator's compartment right side, they are with another messenger chain 33 links.
In the present embodiment, Power Drive Unit comprises 4 two trailing wheels----are arranged is that left rear wheel 44 connects through hind axle 45 with 43, two trailing wheels of off hind wheel.
In the present embodiment; Direction regulating handle 34 is positioned at the operator's compartment left side, and when battery-driven car was in cruising or non-pivot stud, direction regulating handle 34 was in the shelves that go; The mid point of two constraint centre of sprocket lines is positioned on the axis of sprocket wheel B25 and sprocket wheel C32; The chain A37a that is positioned at the outside is in relative tension, be positioned at inboard chain B37b and be in relative relaxation state, this moment only direction of passage dish 21 control front-wheels towards.Like Fig. 5, shown in Figure 6, when battery-driven car is wanted left face, first steering wheel rotation 21 drive two front-wheels parallel turn over an angle A 52; At this moment, the line of segment axis 51 center-points overlaps with the axis 54 of off front wheel between the geometric centre of off front wheel 41 and two trailing wheels, forwards direction regulating handle 34 to the pivot stud shelves again; In this process; Two constraint sprocket wheels rotate counterclockwise around vertical pivot 27, make chain B37b be in tension, and chain A37a is in relative relaxation state; Thereby make chain B37b drive sprocket wheel C32 and rotate counterclockwise an angle B 53 along the tension direction; Even the near front wheel 42 conter clockwises turn over angle B 53, and no longer with off front wheel 41 keeping parallelisms, the line of segment axis 51 center-points overlaps with the axis 55 of the near front wheel 42 between the geometric centre of the near front wheel 42 and two trailing wheels; At this moment; Battery-driven car is by f-w-d; Trailing wheel as flower wheel with the center-point of segment axis between two trailing wheels be center of circle left-handed turning to, promptly the near front wheel 42 rotates counterclockwise along circular trace 58 with off front wheel 41, left rear wheel 44 rotates counterclockwise along circular trace 56 with off hind wheel 43.
In the present embodiment, through in rotating shaft 22 or vertical pivot 27 places the limiting steering device being set, the maximum angle that makes direction of passage dish 21 drive the front-wheel rotation just is angle A 52.The rotating shaft 22 of bearing circle 21 and closure dish 21 and universal-joint 23 is positioned at the centre of operator's compartment.Between open end of front-wheel support 26 1 side platform 26a and front wheel spindle bearing sleeve 46, be provided with bumper 29.Power Drive Unit 4 comprises two cover DC machine, output shaft; Wherein a cover is used for driving trailing wheel, another set ofly is used for driving front-wheel, and two cover DC machine, output shaft can be worked simultaneously, also can work independently.Casing frame 1 is metal all-closed band vehicle window, car door, preceding bonnet structure; And left-hand door 11 is a revolving door; Its bottom be welded with parallel at the bottom of the car and be positioned at car at the bottom of above swinging mounting 12, the rotating shaft end 12a of swinging mounting 12 links to each other with at the bottom of the car through rotating shaft, when needs are opened left-hand door; It is pulled back, go to position as shown in Figure 2 and get final product.Right door is a clamshell doors.Energy generator can be storage battery or solar power.
Claims (10)
1. a pivot stud revolving door electrocar comprises: casing frame, Power Drive Unit, steering hardware, energy generator; Wherein Power Drive Unit is positioned at the casing frame bottom; Casing frame is used for fixing, places other device provides placement simultaneously for chaufeur, goods place; Steering hardware is positioned on the front end, Power Drive Unit of casing frame, and energy generator is positioned on the rear, Power Drive Unit of casing frame; Steering hardware comprises: bearing circle, rotating shaft, limiting steering device, universal-joint; Power Drive Unit comprises: the near front wheel and off front wheel;
It is characterized in that: steering hardware also comprises: sprocket wheel, messenger chain, front-wheel support, direction regulating handle, constraint sprocket wheel; On each front-wheel, be provided with front-wheel support; Front-wheel support is shaped as is with a bonded assembly flat-bed of one three openings front fork; And platform is parallel to the ground, and the end that front-wheel support stretches to the front-wheel wheel shaft is connected with front-wheel through bearing, on platform, welds one section vertical pivot perpendicular to platform and perpendicular to the position of front-wheel geometric centre; Vertical pivot is provided with two pressure bearings coaxial with it up and down; Be the counterpart of casing frame between two pressure bearings, front-wheel support and casing frame fixed, make front-wheel support opposite shell framework can only do to horizontally rotate through two pressure bearings; Be welded with the sprocket wheel parallel with platform in the position near the vertical pivot top, the sprocket wheel specification on two front-wheel supports is in full accord, but coplane not; Be with the direction regulating handle on a vertical pivot therein; Handle end stretches to operator's compartment; Axle head is a crank; But with the vertical pivot is center of circle left-right rotation, and the constraint sprocket wheel of former and later two horizontal positioned is set on the face of the side in crank leans on car, and the sprocket wheel coplane on the vertical pivot at constraint sprocket wheel and its place; The end of the rotating shaft of universal-joint one end closure dish, the other end is perpendicular to ground and be fixed on the correspondence position of casing frame, and is fixed with two sprocket wheels up and down on its vertical end, they respectively be positioned at two sprocket wheel coplanes on the front-wheel support; Article two, messenger chain meshes with pair of sprocket respectively; This comprises sprocket wheel and a sprocket wheel on front-wheel support on the universal-joint to sprocket wheel; Wherein the messenger chain in direction regulating handle one side passes between two constraint sprocket wheels, and with two the constraint sprocket engagement, rotate around vertical pivot through making these two constraint sprocket wheels; Thereby the drive messenger chain, and then the front-wheel that drives this side can obtain an extra corner when pivot stud.
2. pivot stud revolving door electrocar as claimed in claim 1 is characterized in that: be fixed in the sprocket wheel on the universal-joint, near the sprocket wheel coplane on the front-wheel support in ground-surface sprocket wheel and operator's compartment left side, they link with a messenger chain; Away from the sprocket wheel coplane on the front-wheel support on ground-surface sprocket wheel and operator's compartment right side, they are with another messenger chain link.
3. pivot stud revolving door electrocar as claimed in claim 1 is characterized in that: Power Drive Unit includes two trailing wheels, and two trailing wheels connect through hind axle.
4. pivot stud revolving door electrocar as claimed in claim 3; It is characterized in that: the direction regulating handle is positioned at the operator's compartment left side, and when battery-driven car was in cruising or non-pivot stud, the direction regulating handle was in the shelves that go; The mid point of two constraint centre of sprocket lines is positioned on the axis of sprocket wheel B and sprocket wheel C; The chain A that is positioned at the outside is in relative tension, be positioned at inboard chain B and be in relative relaxation state, this moment only direction of passage dish control front-wheel towards; When battery-driven car is wanted left face, first steering wheel rotation drive two front-wheels parallel turn over an angle A, at this moment; The line of segment axis center-point and the dead in line of off front wheel between the geometric centre of off front wheel and two trailing wheels; Forward the direction regulating handle to the pivot stud shelves again, in this process, two constraint sprocket wheels rotate counterclockwise around vertical pivot; Make chain B be in tension; Chain A is in relative relaxation state, rotates counterclockwise an angle B thereby make chain B drive sprocket wheel A along the tension direction, even the near front wheel conter clockwise turns over angle B; And no longer with off front wheel keeping parallelism, the line of segment axis center-point and the dead in line of the near front wheel between geometric centre of the near front wheel and two trailing wheels; At this moment, battery-driven car is by f-w-d, trailing wheel as flower wheel with the center-point of segment axis between two trailing wheels be center of circle left-handed turning to.
5. pivot stud revolving door electrocar as claimed in claim 4 is characterized in that: through in rotating shaft or vertical pivot place the limiting steering device being set, the maximum angle that the moving front-wheel of direction of passage dribbling is rotated just is angle A.
6. pivot stud revolving door electrocar as claimed in claim 1 is characterized in that: the rotating shaft of bearing circle and closure dish and universal-joint is positioned at the centre of operator's compartment.
7. pivot stud revolving door electrocar as claimed in claim 1 is characterized in that: between open end of front-wheel support one side platform and front wheel spindle bearing sleeve, be provided with bumper.
8. pivot stud revolving door electrocar as claimed in claim 1 is characterized in that: Power Drive Unit comprises two cover DC machine, output shaft; Wherein a cover is used for driving trailing wheel, another set ofly is used for driving front-wheel, and two cover DC machine, output shaft can be worked simultaneously, also can work independently.
9. pivot stud revolving door electrocar as claimed in claim 1; It is characterized in that: casing frame is metal all-closed band vehicle window, car door, preceding bonnet structure; And left-hand door is a revolving door; Its bottom be welded with parallel at the bottom of the car and be positioned at car at the bottom of above swinging mounting, the rotating shaft end of swinging mounting links to each other with at the bottom of the car through rotating shaft; Right door is a clamshell doors.
10. pivot stud revolving door electrocar as claimed in claim 1, it is characterized in that: energy generator can be storage battery or solar power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210255069.XA CN102745226B (en) | 2012-07-23 | 2012-07-23 | Electric sedan with swing door and capable of turning fixedly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210255069.XA CN102745226B (en) | 2012-07-23 | 2012-07-23 | Electric sedan with swing door and capable of turning fixedly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102745226A true CN102745226A (en) | 2012-10-24 |
| CN102745226B CN102745226B (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210255069.XA Expired - Fee Related CN102745226B (en) | 2012-07-23 | 2012-07-23 | Electric sedan with swing door and capable of turning fixedly |
Country Status (1)
| Country | Link |
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| CN (1) | CN102745226B (en) |
Cited By (6)
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| CN103192692A (en) * | 2013-04-11 | 2013-07-10 | 孙兆文 | Rotatable hybrid car |
| CN105151116A (en) * | 2015-09-25 | 2015-12-16 | 江苏大学 | Pure-rolling and in-situ-steering four-wheel walking device |
| WO2016193937A1 (en) * | 2015-06-03 | 2016-12-08 | P-Gevs S.R.L. | Electric traction car, usable in particular as taxi |
| CN110775142A (en) * | 2018-07-31 | 2020-02-11 | Trw有限公司 | Steering column assembly |
| CN110816695A (en) * | 2019-10-31 | 2020-02-21 | 招念祖 | Multifunctional small car |
| CN115370875A (en) * | 2022-08-25 | 2022-11-22 | 芜湖高昌液压机电技术有限公司 | Hydraulic contraction type electromechanical equipment auxiliary moving assembly |
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| US5390751A (en) * | 1993-11-19 | 1995-02-21 | Deere & Company | Planetary steering system for a skid-steered vehicle |
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| WO2016193937A1 (en) * | 2015-06-03 | 2016-12-08 | P-Gevs S.R.L. | Electric traction car, usable in particular as taxi |
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| CN115370875B (en) * | 2022-08-25 | 2024-08-13 | 芜湖高昌液压机电技术有限公司 | Hydraulic contraction type electromechanical equipment auxiliary moving assembly |
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| Publication number | Publication date |
|---|---|
| CN102745226B (en) | 2014-06-04 |
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