CN104715943A - Disengagement and engagement mechanism for energy storage device and gas-insulated breaker comprising disengagement and engagement mechanism - Google Patents
Disengagement and engagement mechanism for energy storage device and gas-insulated breaker comprising disengagement and engagement mechanism Download PDFInfo
- Publication number
- CN104715943A CN104715943A CN201310689597.0A CN201310689597A CN104715943A CN 104715943 A CN104715943 A CN 104715943A CN 201310689597 A CN201310689597 A CN 201310689597A CN 104715943 A CN104715943 A CN 104715943A
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- CN
- China
- Prior art keywords
- clutch
- push rod
- ping
- gear
- gear shaft
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
- H01H3/58—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts using friction, toothed, or other mechanical clutch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/42—Driving mechanisms
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- Gear Transmission (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention relates to a disengagement and engagement mechanism for an energy storage device. The disengagement and engagement mechanism comprises a loading gear, a drive gear, two bearings and a gear shaft comprising a gear portion and a disengagement and engagement portion. The gear shaft comprises a plurality of cylinders, a plurality of disengagement and engagement rods corresponding to the cylinders, a plurality of first elastic elements, a push rod and a second elastic element, wherein the push rod and the second elastic element are located in a cavity of the gear shaft; the push rod comprises a disengagement and engagement groove and can slide in the axial direction; the drive gear is fixedly provided with a pressing block, and the pressing block can push the push rod to slide in the axial direction, so a lining and the gear shaft can be unlocked or locked. The invention further relates to a gas-insulated breaker comprising the disengagement and engagement mechanism. Mechanical separation between a power device and the energy storage device is achieved simply, conveniently and reliably while energy storage is completed through the disengagement and engagement mechanism and the gas-insulated breaker at low cost.
Description
Technical field
The present invention relates to a kind of clutch, particularly relate to a kind of clutch for energy storage device.In addition, the invention still further relates to the gas insulation breaker adopting this clutch.
Background technology
Multiple energy storage device must coordinate to gather strength with clutch and release energy when needed.These energy storage devices can be such as utilize spring to gather potential energy, and make when energy accumulation completes clutch be in can the state of Double-directional rotary to release energy.
The multiple existing gas insulation breaker for high voltage power transmission all adopts energy storage device and the clutch that is mated, can only energy storage device can be gathered and storage power the clutch under the state of one-directional rotation.When clutch be in can under the state of Double-directional rotary time, power set will be separated with energy storage device machinery, and then the energy gathered in energy storage device is released, thus be kinetic energy by potential energy stored in energy storage device, and then the operating mechanism promoted in gas insulation breaker disconnects or the closed circuit being connected with gas insulation breaker.Existing clutch adopts a form for ratchet mechanism, and wherein ratchet and ratchet cooperatively interact, can only one-directional rotation state bottom ratchet wheel along with gathering of energy can only one-directional rotation, therefore the energy gathered can not run off.When energy storage device completes energy accumulation, ratchet is separated realizing power set with the arc surface on ratchet with the machinery of energy storage device, and releases energy when needed.
Korean Patent KR100841649B1 discloses a kind of switch cabinet handcart for medium-voltage distribution, wherein in order to switch between manual operation handcart and electric operating handcart two kinds of different modes, have employed a kind of clutch.This clutch comprises driving gear, driven gear and screw mandrel, and wherein the moment of torsion of driven gear can be delivered to the transmission of moment of torsion to screw mandrel of screw mandrel or isolation driven gear by switch unit.Switch unit comprises one and is located at trip(ping) lever that handle inserts into the mouth and is located at the clutch ball and elastomeric element that ball inserts into the mouth.
Summary of the invention
The invention provides a kind of clutch for energy storage device, comprise the gear shaft that loads gear, a driven wheel, two bearings and comprise gear part and clutch part, wherein said loading gear is by described bearing and described clutch part can Double-directional rotary ground be coaxial is connected, and described driven wheel and described gear part external toothing.Described gear shaft comprises several cylinder, the several trip(ping) lever corresponding with described cylinder and several first flexible member and is positioned at a push rod of cavity and second flexible member of described gear shaft, wherein said clutch part has circumferentially corresponding with described cylinder several stopper slots, and described cylinder is arranged in described stopper slot.Described trip(ping) lever is movably through the wall of described clutch part, and described clutch part is fixed in one end of described first flexible member, and the other end extrudes described trip(ping) lever.Described push rod comprises a clutch slot and can slide axially, and wherein said second flexible member engages one end of described push rod and extrudes described push rod.Described driven wheel is fixed with a briquetting, and described briquetting can contact the other end of described push rod and promote described push rod and slide axially.When described briquetting promotes described push rod, described push rod promotes by described trip(ping) lever the bottom that described cylinder enters described stopper slot, thus makes described loading gear and described gear shaft can Double-directional rotary.When described briquetting departs from described push rod, described first flexible member radially promotes described trip(ping) lever towards the axis of described gear shaft, thus makes described loading gear and described gear shaft can only one-directional rotation.Clutch of the present invention with lower cost to achieve when energy storage completes easy between power set with energy storage device and reliably machinery be separated.
According to one aspect of the present invention, described first flexible member is eyelet.
According to another aspect of the present invention, described clutch also comprises the several pins corresponding with described first flexible member, described pin is positioned at described clutch part and is fixed on the axis side away from described gear shaft between the two ends of described first flexible member, makes described first flexible member produce elastic deformation when described trip(ping) lever promotes described cylinder.
According to another aspect of the invention, described clutch also comprises several three flexible members corresponding with described cylinder, described 3rd flexible member is installed on the described stopper slot side relative with described trip(ping) lever, and can be clamped between described loading gear and described gear shaft for promoting described cylinder.
According to another aspect of the present invention, described briquetting comprises an inclined-plane that can contact with described push rod.
According to another aspect of the present invention, described stopper slot is " V " type groove.
According to another aspect of the present invention, one end that described trip(ping) lever contacts with described push rod has inclined-plane, can leave or enter described clutch slot with trip(ping) lever described when described push rod slides axially.
According to another aspect of the present invention, the side that described clutch slot contacts with described trip(ping) lever has inclined-plane, can leave or enter described clutch slot with trip(ping) lever described when described push rod slides axially.
According to another aspect of the present invention, described push rod has a fairlead between one end that it contacts with described briquetting and described gear shaft.
The present invention also provides a kind of gas insulation breaker, comprise power set, powder operation device, energy storage device and the clutch described in above-mentioned arbitrary claim, wherein said loading gear is connected with power set, described driven wheel is connected with energy storage device, and described gear shaft is connected with powder operation device.Gas insulation breaker of the present invention because adopting above-mentioned clutch with lower cost to achieve when energy storage completes easy between power set with energy storage device and reliably machinery be separated.
Hereafter by clearly understandable mode, accompanying drawings preferred embodiment, is further described above-mentioned characteristic of the present invention, technical characteristic, advantage and implementation thereof.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein,
Fig. 1 schematically illustrate energy storage device release after can only one-directional rotation time clutch of the present invention stereogram;
Fig. 2 schematically illustrate energy storage device release moment or gather strength complete time can Double-directional rotary time clutch of the present invention stereogram;
Fig. 3 schematically illustrates the stereogram of interconnective loading gear and gear shaft;
What Fig. 4 schematically illustrated that the loading gear of Fig. 3 and gear shaft be in Fig. 2 can axial cutaway view under the state of Double-directional rotary and radial cross-section B-B;
What Fig. 5 schematically illustrated that the loading gear of Fig. 3 and gear shaft be in Fig. 1 can only axial cutaway view under the state of one-directional rotation and radial cross-section B-B;
Fig. 6 schematically illustrates the bevelled briquetting of band.
Main device symbol description
21 push rods 25 load gear
22 driven wheel 26 briquettings
23 bearing 261 inclined-planes
24 gear shaft 28 cylinders
241 gear part 242 clutch part
243 stopper slot 20 second flexible members
29 trip(ping) levers 31 the 3rd flexible member
30 first flexible member 33,244 holes
211 clutch slot 212 fairleads
27 chocks
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.Label identical in the drawings represents identical or structural similarity but the identical parts of function, and wherein has the parts of same structure or function, only schematically depict one of them, or has only marked one of them.For making simplified form, only schematically show part related to the present invention in figure, they do not represent its practical structures as product.Herein " connection " or " fixing " represent directly " connection " or " fixing ", or via " connection " or " fixing " of the third party.
As shown in Fig. 1 to 5, a kind of clutch for energy storage device comprises one and loads gear 25, driven wheel, 22, two bearing 23(such as deep groove ball bearing etc.) and a gear shaft 24 comprising gear part 241 and clutch part 242, wherein load gear 25 by bearing 23 and clutch part 242 can Double-directional rotary ground be coaxial is connected, and driven wheel 22 and gear part 241 external toothing.Gear shaft 24 comprises five cylinders 28, corresponding with cylinder 28 five trip(ping) levers 29 and five the first flexible members 30 and is positioned at the push rod 21 of cavity and second flexible member 20 of gear shaft 24, wherein clutch part 242 has the stopper slot 243 of five circumferentially corresponding with cylinder 28 " V " types, and cylinder 28 is arranged in " V " type groove.It will be appreciated by those skilled in the art that, although illustrated execution mode have employed five cylinders, but adopt as required and be less than or be also fine, as long as the selection of quantity can meet design requirement more than the cylinder of five and the trip(ping) lever corresponding with it, the first flexible member and stopper slot.In addition, also can adopt the stopper slot of other shape beyond " V " type, such as, be with acclive dovetail groove.Trip(ping) lever 29 is movably through the wall of clutch part 242, and clutch part 242 is fixed on by the hole 33 in clutch part 242 in one end of the first flexible member 30, other end extruding trip(ping) lever 29.Clutch also can comprise five pins 32 corresponding with the first flexible member 30.Pin 32 is positioned at clutch part 242 and is arranged on the axis side away from gear shaft 24 between the two ends of the first flexible member 30 vertically, makes the first flexible member 30 produce elastic deformation when trip(ping) lever 29 promotes cylinder 28.It will be understood by those skilled in the art that when one end of the first flexible member 30 is fixed in hole 26 un-rotatably, pin 32 not necessarily, but pin 32 be provided be beneficial to strengthen extruding trip(ping) lever 29 effect.Those skilled in the art also will understand, and the first flexible member 30 can be eyelet, but also can be other known metal or non-metallic component.The various parameters of the stopper slot 243 of " V " type can be selected by those skilled in the art according to the designing requirement of existing freewheel clutch.In the present invention, the intersection of gear part 241 and clutch part 242 not only refers to the line of demarcation of the two but also comprises near marginal position.It will be appreciated by those skilled in the art that.After " axis ", " radial direction " and " circumference " in the present invention refers to clutch assembling, each parts are relative to the direction of the axis of gear shaft 24, and " axis " refers to the axis of gear shaft 24.
Push rod 21 comprises a clutch slot 211 can sliding axially, and wherein the second flexible member 20 engages one end of push rod 21 and pressure-ram 21.Second flexible member 20 can as shown in Figures 4 and 5, be fixed in the cavity of gear shaft 24 by a chock 27, also fixes by other unshowned locating part.Driven wheel 22 is fixed with a briquetting 26, and the inclined-plane 261 of briquetting 26 can contact the other end of push rod 21 and promote push rod 21 and slide axially.When storage power completes, briquetting 26 turns to position shown in Fig. 2 and Fig. 4 and promotes push rod 21.In the process, push rod 21 slides axially and makes one end of trip(ping) lever 29 radially leave clutch slot 211, and its other end stretches into stopper slot 243, thus promotes the bottom that cylinder 28 enters stopper slot 243.The cylinder 28 be arranged in bottom stopper slot 243 can at both direction (clockwise direction and counter clockwise direction) the upper Mechanical Contact departing from and load gear 25 as shown in Fig. 4 cutaway view B-B, can not be clamped at and load between gear 25 and gear shaft 24, and then make to load gear 25 and gear shaft 24 can Double-directional rotary.Now, trip(ping) lever 29 extrudes the first flexible member 30, makes it that elastic deformation occur.Simultaneously, cylinder 28 extrudes the 3rd flexible member 31, wherein the 3rd flexible member 31 can be the combination (not shown) of spring and pin or be a spring as shown in Figures 4 and 5, and one end of the 3rd flexible member 31 is arranged on hole 244(Figure 4 and 5 respectively illustrates two holes 244, corresponding 3rd flexible member 31 in each hole 244) in.In the process, the energy of storage can carry out releasing operation.In energy release process, driven wheel 22 and briquetting 26 synchronous axial system, driven gear axle 24 rotates clockwise by driven wheel 22 (as shown in Fig. 4 cutaway view B-B).Because loading gear 25 is now actionless, then cylinder 28 cannot be clamped in and load between gear 25 and gear shaft 24, and gear shaft 24 will be rotated further until whole fault offset completes, and finally impel powder operation device closed circuit.
When the briquetting 26 be fixed on driven wheel 22 turns over suitable angle, briquetting 26 will depart from push rod 21, now push rod 21 appropriate location that slides axially under the effect of the second flexible member 20 resets, first flexible member 30 is radially towards axis extruding trip(ping) lever 29 simultaneously, thus as shown in Fig. 5 midship section figure B-B, cylinder 28 is got back in clutch slot 211.In the process, the 3rd flexible member 31 being positioned at stopper slot 243 side relative with trip(ping) lever 29 promotes cylinder 28 and leaves bottom stopper slot 243.Now, rotate clockwise around Fig. 5 midship section figure B-B relative to gear shaft 24 if load gear 25, then cylinder 28 will be clamped between driven wheel 22 and gear shaft 24, thus driven wheel 22 and gear shaft 24 cannot be locked rotationally.It will be understood by those skilled in the art that briquetting 26 is fixed on position on driven wheel 22 and size can be selected according to the needs of design parameter.Clutch of the present invention and gas insulation breaker thereof with lower cost to achieve when energy storage completes between power set with energy storage device easy and reliably machinery be separated.One end that trip(ping) lever 29 contacts with push rod 21 or the side that clutch slot 211 contacts with trip(ping) lever 29 or the two there is inclined-plane simultaneously, can leave or enter clutch slot 211 with the trip(ping) lever 29 when push rod 21 slides axially.Inclined-plane facilitates the relative motion of trip(ping) lever 29 and clutch slot 211.In addition, push rod 21 has a fairlead 212 between one end that it contacts with briquetting 26 and gear shaft 24.Fairlead is conducive to the guiding of push rod 21.Those skilled in the art also will understand, driven wheel 22 correspondingly can be selected according to the various actual parameters of power set, powder operation device and energy storage device with the gearratio of gear part 241, and the first flexible member 20 is preferably a spring, but also can be the element that other can engage also pressure-ram 21.As shown in Figure 6, briquetting 26 comprises an inclined-plane 261 that can contact with push rod 21, thus is beneficial to the easy contact between briquetting 26 and push rod 21.
According to unshowned a kind of execution mode, gas insulation breaker of the present invention comprises power set, powder operation device, energy storage device and above-mentioned clutch, wherein load gear 25 to be connected with power set, driven wheel 22 is connected with energy storage device, and gear shaft 24 is connected with operating means.After the fault offset that energy storage device gathers, clutch is in the locked position shown in Fig. 2 and Fig. 5, and flexible member 20 engages one end of push rod 21 and pressure-ram 21, and push rod 21 is resisted against on the inwall of the cavity of gear shaft 24.In the process, trip(ping) lever 29 radially slides towards axis direction, and loading gear 25 and gear shaft 24 can only one-directional rotation.At this moment, use the power source of such as motor to rotate and load gear 25 by driven gear axle 24 synchronous axial system, and then be potential energy in the energy storage device that is connected with driven wheel 22 by kinetic transformation, wherein the design of one-directional rotation can only ensure that the energy of storage can not be released in loading procedure.Meanwhile, driven wheel 22 is because engaging also by synchronous axial system with gear part 241, and briquetting 26 is owing to being fixed on driven wheel 22 also by synchronous axial system.
Be to be understood that, although this specification describes according to each execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, technical scheme in each execution mode also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
In this article, " schematically " expression " serves as example, example or explanation ", not should by being described to any diagram of " schematically " in this article, execution mode is interpreted as a kind of preferred or have more the technical scheme of advantage.
The foregoing is only the schematic embodiment of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present invention and principle, amendment and combination, all should belong to the scope of protection of the invention.
Claims (10)
1. the clutch for energy storage device, comprise the gear shaft (24) that loads gear (25), a driven wheel (22), two bearings (23) and comprise gear part (241) and clutch part (242), wherein said loading gear (25) is by described bearing (23) and described clutch part (242) can Double-directional rotary ground be coaxial is connected, and described driven wheel (22) and described gear part (241) external toothing;
Described gear shaft (24) comprises several cylinder (28), the several trip(ping) levers (29) corresponding with described cylinder (28) and several first flexible member (30) and be positioned at a push rod (21) of cavity and second flexible member (20) of described gear shaft (24), wherein said clutch part (242) has circumferentially corresponding with described cylinder (28) several stopper slots (243), described cylinder (28) is arranged in described stopper slot (243), described trip(ping) lever (29) is movably through the wall of described clutch part (242), described clutch part (242) is fixed in one end of described first flexible member (30), the other end extrudes described trip(ping) lever (29),
Described push rod (21) comprises a clutch slot (211) and can slide axially, and wherein said second flexible member (20) engages one end of described push rod (21) and extrudes described push rod (21);
Described driven wheel (22) is fixed with a briquetting (26), and described briquetting (26) can contact the other end of described push rod (21) and promote described push rod (21) and slide axially;
When described briquetting (26) promotes described push rod (21), described push rod (21) promotes by described trip(ping) lever (29) bottom that described cylinder (28) enters described stopper slot (243), thus makes described loading gear (25) and described gear shaft (24) can Double-directional rotary; When described briquetting (26) departs from described push rod (21), described first flexible member (30) radially promotes described trip(ping) lever (29) towards the axis of described gear shaft (24), thus makes described loading gear (25) and described gear shaft (24) can only one-directional rotation.
2. clutch as claimed in claim 1, wherein said first flexible member (30) is eyelet.
3. clutch as claimed in claim 1, wherein said clutch also comprises the several pins (32) corresponding with described first flexible member (30), described pin (32) is positioned at described clutch part (242) and is fixed on the axis side away from described gear shaft (24) between the two ends of described first flexible member (30), makes described first flexible member (30) produce elastic deformation when described trip(ping) lever (29) promotes described cylinder (28).
4. clutch as claimed in claim 1, wherein said clutch also comprises several three flexible members (31) corresponding with described cylinder (28), described 3rd flexible member (31) is installed on described stopper slot (243) side relative with described trip(ping) lever (29), and can be clamped between described loading gear (25) and described gear shaft (24) for promoting described cylinder (28).
5. clutch as claimed in claim 1, wherein said briquetting (26) comprises an inclined-plane (261) that can contact with described push rod (21).
6. clutch as claimed in claim 1, wherein said stopper slot (243) is " V " type groove.
7. clutch as claimed in claim 1, one end that wherein said trip(ping) lever (29) contacts with described push rod (21) has inclined-plane, can leave or enter described clutch slot (211) with the described trip(ping) lever (29) when described push rod (21) slides axially.
8. clutch as claimed in claim 1, the side that wherein said clutch slot (211) contacts with described trip(ping) lever (29) has inclined-plane, can leave or enter described clutch slot (211) with the described trip(ping) lever (29) when described push rod (21) slides axially.
9. clutch as claimed in claim 1, wherein said push rod (21) has a fairlead (212) between one end that it contacts with described briquetting (26) and described gear shaft (24).
10. a gas insulation breaker, comprise power set, powder operation device, energy storage device and the clutch described in above-mentioned arbitrary claim, wherein said loading gear (25) is connected with power set, described driven wheel (22) is connected with energy storage device, and described gear shaft (24) is connected with powder operation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310689597.0A CN104715943B (en) | 2013-12-16 | 2013-12-16 | Disengagement and engagement mechanism for energy storage device and gas-insulated breaker comprising disengagement and engagement mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310689597.0A CN104715943B (en) | 2013-12-16 | 2013-12-16 | Disengagement and engagement mechanism for energy storage device and gas-insulated breaker comprising disengagement and engagement mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104715943A true CN104715943A (en) | 2015-06-17 |
| CN104715943B CN104715943B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310689597.0A Expired - Fee Related CN104715943B (en) | 2013-12-16 | 2013-12-16 | Disengagement and engagement mechanism for energy storage device and gas-insulated breaker comprising disengagement and engagement mechanism |
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| Country | Link |
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| CN (1) | CN104715943B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428112A (en) * | 2015-12-23 | 2016-03-23 | 无锡江南奕帆电力传动科技股份有限公司 | One-way clutch |
| CN111108575A (en) * | 2017-09-22 | 2020-05-05 | 西门子股份公司 | Tensioning transmission mechanism for tensioning energy storage spring of spring energy storage driving device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068697C (en) * | 1997-04-17 | 2001-07-18 | 三菱电机株式会社 | Energy storage device of circuit breaker |
| JP2006086066A (en) * | 2004-09-17 | 2006-03-30 | Mitsubishi Electric Corp | Switching device |
| CN102931002A (en) * | 2012-11-14 | 2013-02-13 | 博耳(无锡)电力成套有限公司 | Energy storing device of breaker |
-
2013
- 2013-12-16 CN CN201310689597.0A patent/CN104715943B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068697C (en) * | 1997-04-17 | 2001-07-18 | 三菱电机株式会社 | Energy storage device of circuit breaker |
| JP2006086066A (en) * | 2004-09-17 | 2006-03-30 | Mitsubishi Electric Corp | Switching device |
| CN102931002A (en) * | 2012-11-14 | 2013-02-13 | 博耳(无锡)电力成套有限公司 | Energy storing device of breaker |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428112A (en) * | 2015-12-23 | 2016-03-23 | 无锡江南奕帆电力传动科技股份有限公司 | One-way clutch |
| CN111108575A (en) * | 2017-09-22 | 2020-05-05 | 西门子股份公司 | Tensioning transmission mechanism for tensioning energy storage spring of spring energy storage driving device |
| CN111108575B (en) * | 2017-09-22 | 2022-07-01 | 西门子能源全球有限公司 | Tensioning transmission mechanism for tensioning energy storage spring of spring energy storage driving device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104715943B (en) | 2017-04-12 |
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