CN105387064A - Unfolding hinge for quick connection and separation - Google Patents
Unfolding hinge for quick connection and separation Download PDFInfo
- Publication number
- CN105387064A CN105387064A CN201510757175.1A CN201510757175A CN105387064A CN 105387064 A CN105387064 A CN 105387064A CN 201510757175 A CN201510757175 A CN 201510757175A CN 105387064 A CN105387064 A CN 105387064A
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- China
- Prior art keywords
- centre drawer
- hinge
- drawer hinge
- locking
- locking fork
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/12—Pivotal connections incorporating flexible connections, e.g. leaf springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
The invention discloses an unfolding hinge for quick connection and separation. The unfolding hinge can unfold a solar wing box board within a certain angle range and achieve in-orbit quick connection and separation of a solar wing. The unfolding hinge comprises a male hinge assembly, a female hinge assembly and a connection and separation device. When the hinge is unfolded, drive force stored by a volute spiral spring when the hinge is in the folded state is transmitted to a female hinge from a male hinge through a shaft, and meanwhile, a flat head screw in the female hinge assembly and a round head screw in the male hinge assembly conduct limiting in the unfolding direction; and an impact load is reduced through a damper in the last period of unfolding. When the solar wing box board and a sleeve are located in the connection state, a locking pin shaft in the female hinge assembly is locked into a locking pin shaft locating hole in a connection and separation base through locking swing rods in the connection and separation device; in the separation state, locking pins on the locking swing rods are located at the locked ends of locating grooves of the locking swing rods; and the female hinge assembly is separated from the connection and separation device.
Description
Technical field
The present invention relates to solar wing boxboard launch and change technical field in-orbit, be specifically related to the expansion hinge that a kind of quick connection is separated.
Background technique
Along with the continuous increase of astrovehicle kind, astrovehicle proposes new requirement to solar wing configuration, expansion rigidity, in-orbit replacing etc.Tradition solar wing adopts hook locking type or pin axle type hinge to carry out expansion and fixes, its expanded angle is fixed, flexible solar wing boxboard volume due to the present invention's application comparatively large and in dimensional chain link more, the accumulation of error is larger, the expansion hinge of this fixing expanded angle can not eliminate this error, and then causes solar wing Planar Mechanisms.Meanwhile, this expansion hinge is fixedly connected on solar wing, does not have the ability changed in-orbit, once solar wing breaks down or to end of lifetime, cannot change.
Summary of the invention
In view of this, the invention provides the expansion hinge that a kind of quick connection is separated, solar wing boxboard can be realized and launch within the scope of several angle, and the connecting fast in-orbit of solar wing can be realized, be separated.
The expansion hinge that quick connection of the present invention is separated, comprise centre drawer hinge bracket assembly, centre drawer hinge assembly and be connected segregating unit, peripheral unit is solar wing sleeve and solar wing boxboard;
Wherein, centre drawer hinge bracket assembly comprises centre drawer hinge bracket, round head bolt, axle, flat key and spiral spring; Wherein, one end of centre drawer hinge bracket is fixedly mounted on solar wing sleeve, the other end installation shaft; The inner of spiral spring is arranged on axle, and outer end is fixedly mounted on centre drawer hinge bracket; Round head bolt is arranged on centre drawer hinge bracket, and the axis perpendicular of the axis of round head bolt and axle; Flat key is fixedly mounted on axle;
Centre drawer hinge assembly comprises centre drawer hinge, thread screw, square nut, splined nut and locking bearing pin, and wherein, one end of centre drawer hinge is installed with locking bearing pin, and the other end is provided with thread screw; Splined nut, square nut lay respectively at the two ends of thread screw, and splined nut is towards centre drawer hinge;
Connect segregating unit and comprise locking fork, locating cones, torsion spring, torsion spring rotating shaft, positioning dowel and connection detachable base; Wherein, connect detachable base and be arranged on solar wing boxboard, and be provided with locking bearing pin positioning hole and the axially oriented groove of stop pin; Connect on detachable base and be also provided with locking fork locating slot; Locking fork locating slot is positioned at the side of the axially oriented groove of stop pin, and perpendicular with the axially oriented groove of stop pin; Torsion spring rotating shaft is fixedly mounted on and connects on detachable base; Locking fork is positioned at the axially oriented groove of stop pin, and one end is socketed in torsion spring rotating shaft, and the other end installs positioning dowel; Locking fork locating slot by from lower width gradual change, its bottom is keyed end; Positioning dowel is positioned at locking fork locating slot; One end is fixed in torsion spring rotating shaft, and the other end is fixed on locking fork;
During rounding state, spiral spring is compressive state; The outer end of flat key is connected with centre drawer hinge;
During deployed condition, the thread screw in centre drawer hinge assembly is coaxial with the round head bolt in centre drawer hinge bracket assembly and contact;
During coupled condition, the locking bearing pin in centre drawer hinge assembly is locked in the locking bearing pin positioning hole connected on detachable base by the locking fork connected in segregating unit;
During separated state, the positioning dowel be arranged on locking fork is positioned at the keyed end of locking fork locating slot; Centre drawer hinge assembly be connected segregating unit and separate.
Further, the upper-end surface of spiral spring is provided with viscous damper, and the shell of viscous damper and centre drawer hinge bracket fixedly mount.
Further, there is gap between described square nut and thread screw.
Further, the end face that connection detachable base contacts with centre drawer hinge is provided with locating cones, and centre drawer hinge corresponding position is provided with taper hole.
Further, the lower end surface locking fork is provided with boss.
Beneficial effect:
The expansion that the present invention adopts the method for pure machinery to achieve hinge be connected fast, separation function, reduce the anxiety of the astrovehicle resource using the modes such as motor to bring; Adopt locking fork Placement, locking after utilize locking fork fork curve make lock shaft deviate from power locking fork self-locking circle in, power will be deviate from and be converted into self-lock force, and provide and be rigidly connected reliably.Disengaging of the present invention and lock mode simple, astronaut only needs new equipment to push specified position, and without the need to re-using tool operation, the modes such as fastening screw trip bolt are fixedly connected with, reduce astronaut in the difficulty of too aerial operation and time, thus high degree reduces the cost and risk of astronaut's extravehicular activity.
Accompanying drawing explanation
Fig. 1 is the plan view of the present invention when solar wing spreading state.
Fig. 2 is the A-A sectional view of the present invention when solar wing spreading state.
Fig. 3 is the B-B sectional view of the present invention when solar wing spreading state.
Fig. 4 is the shaft side figure of the present invention when solar wing spreading state.
Fig. 5 is that the present invention connects segregating unit structural representation.
Wherein, 1-centre drawer hinge bracket, 2-spring fitting post, 3-spiral spring, 4-damper connects spline, 5-damper mounting flange, 6-centre drawer hinge, 7-locks bearing pin, and 8-connects detachable base, 9-axle, 10-spring fitting post screw, 11-flat key, 12-round head bolt, 13-thread screw, 14-square nut, 15-splined nut, the right torsion spring of 16-, the right locking fork of 17-, the right positioning dowel of 18-, 19-pad, the left locating cones of 20-, the left positioning dowel of 21-, the left locking fork of 22-, the left torsion spring of 23-, the rotating shaft of 24-torsion spring, the right locating cones of 25-.
Embodiment
To develop simultaneously embodiment below in conjunction with accompanying drawing, describe the present invention.
The invention provides the expansion hinge that a kind of quick connection is separated, as shown in Figure 2, comprise centre drawer hinge bracket assembly, centre drawer hinge assembly and be connected segregating unit, wherein, centre drawer hinge bracket assembly is arranged on solar wing sleeve, connecting segregating unit is arranged on solar wing boxboard, and centre drawer hinge assembly is arranged on and connects on segregating unit, and centre drawer hinge assembly and centre drawer hinge bracket assembly coordinate to be installed.
As shown in Figure 1, centre drawer hinge bracket assembly is made up of centre drawer hinge bracket 1, spring fitting post 2, spiral spring 3, damper connection spline 4, damper mounting flange 5, axle 9, spring fitting post screw 10, flat key 11, round head bolt 12., wherein, one end of centre drawer hinge bracket 1 is fixedly mounted on solar wing sleeve, axle 9 is vertically mounted on the other end of centre drawer hinge bracket 1 by bearing, the inner of spiral spring 3 is arranged on axle 9, outer end is fixedly mounted on spring fitting post 2, spring fitting post 2 is arranged on centre drawer hinge bracket 1 by spring fitting post screw 10, damper connects spline 4 and is arranged on axle 9, be positioned at the top of spiral spring 3, viscous damper is arranged on damper and connects on spline 4, its shell is arranged on damper mounting flange 5, round head bolt 12 is arranged on centre drawer hinge bracket 1, be positioned at the rear of axle 9, the axis of round head bolt 12 and the axis perpendicular of axle 9, flat key 11 is fixedly mounted on axle 9, and its outer end is connected with centre drawer hinge 6, and on axle 9, flat key 11 and centre drawer hinge 6 realize the transmission of hinge driving force.When hinge launches, the driving force that under hinge rounding state, spiral spring stores passes to centre drawer hinge 6 by axle 9 by centre drawer hinge bracket 1, drives hinge to launch, and adopts damper to reduce to launch the impulsive load of hinge in latter stage, avoids large impact to the damage of boxboard.
Centre drawer hinge assembly is made up of centre drawer hinge 6, thread screw 13, square nut 14, splined nut 15, locking bearing pin 7 etc.Wherein, one end of centre drawer hinge 6 is arranged on and connects on segregating unit, the other end is provided with thread screw 13, splined nut 15, square nut 14 lay respectively at the two ends of thread screw 13, splined nut 15 is towards centre drawer hinge 6, and by tightening square nut 14, splined nut 15 makes thread screw 13 fix on centre drawer hinge 6.Under hinge deployed condition, thread screw 13 is coaxial with the round head bolt 12 in centre drawer hinge bracket assembly and contact, and provides the spacing of expansion direction.By regulating the gap between square nut 14 and thread screw 13, regulate the contact angle of thread screw and centre drawer hinge bracket round head bolt, namely the expanded angle launching hinge is regulated, thus realize the adjustment of hinge expanded angle within the scope of 85 ° ~ 95 °, and then the error in flexible solar wing assembly process can be applicable to; Locking bearing pin 7 is fixedly mounted on centre drawer hinge, matches with the locking bearing pin positioning hole being connected segregating unit.
Connect segregating unit to be made up of left locating cones 20, left locking fork 22, left torsion spring 23, torsion spring rotating shaft 24, left positioning dowel 21, right locating cones 25, right locking fork 17, right torsion spring 16, right positioning dowel 18, connection detachable base 8 etc.Connecting detachable base 8 is arranged on solar wing boxboard, connect detachable base 8 and be provided with locking bearing pin positioning hole and the axially oriented groove of stop pin, left and right locking fork 22,17 is positioned at the axially oriented groove of stop pin, its one end is socketed in torsion spring rotating shaft 24, the other end is installed left and right positioning dowel 21,18; Left and right torsion spring 23,16 one end is fixed in torsion spring rotating shaft 24, and the other end is fixed on left and right locking fork 22,17; Pad 19 is provided with between left and right torsion spring 23,16; Torsion spring rotating shaft 24 is fixedly mounted on and connects on detachable base 8; Left and right locking fork interlock, and be in the lock state under the effect of left and right torsion spring 23,16, locking bearing pin 7 by centre drawer hinge assembly is stuck in positioning hole, locking bearing pin departs from the power connecting detachable base 8 direction, in the self-locking circle scope of left and right locking fork, the accident that segregating unit can not occur to connect departs from situation.Connect detachable base 8 and be also provided with the locking fork locating slot of 2 width gradual changes, locking fork locating slot lays respectively at the both sides of the axially oriented groove of stop pin, and locking fork locating slot and the axially oriented groove of stop pin perpendicular, its bottom is keyed end; Left positioning dowel 21 one end connects firmly on left locking fork 22, and the other end is arranged in the locking fork locating slot on the left of connection detachable base 8; Right positioning dowel 18 one end connects firmly on right locking fork 17, and the other end is arranged in the locking fork locating slot on the right side of connection detachable base 8.Left and right positioning dowel coordinates with locking fork locating slot, when locking auto lock when the positioning dowel on fork moves to the keyed end of locking fork locating slot, left and right locking fork is in released state, realizes the locking bearing pin 7 of centre drawer hinge assembly and being separated of connection detachable base 8.That is, when needs solar wing boxboard is separated with sleeve, make left locking fork 22 by frock, right locking fork 17 moves to separation extreme position (namely left positioning dowel 21, right positioning dowel 18 move to the keyed end locking fork locating slot).Now, the positioning dowel on locking fork, by the locking fork locating slot that is still under the effect of frictional force, prevents fork to be back to locked position at the effect bottom of torsion spring.Second hand cases plate can directly push away by astronaut.
Connecting the locating cones 20,25 that the end face that detachable base contacts with centre drawer hinge is arranged, match with the taper hole that centre drawer hinge corresponding position is arranged, thus realize quick, the precise positioning of the torsional direction connected between segregating unit and centre drawer hinge.
During replacing, new boxboard is also furnished with the connection segregating unit of same structure.Its left locking fork 22, right locking fork 17 are in unlocked state.Connect segregating unit when the locking bearing pin 7 of centre drawer hinge assembly is pushed into by astronaut and in the process of locking, connects segregating unit first under the effect of left locating cones 20, right locating cones 25, navigate to tram.In push-on process, locking bearing pin 7 on centre drawer hinge 3 can slide along the inclined-plane of left locking fork 22, right locking fork 17, left locking fork 22, right locking fork 17 are pushed away unlocked position, now left positioning dowel 21, right positioning dowel 18 can be free to slide in locking fork locating slot, do not rub with locking fork locating slot.After locking bearing pin 7 enters locking bearing pin positioning hole, left locking fork 22, right locking fork 17 have the trend being turned back to unlocked state under the effect of torsion spring, are stuck in by locking bearing pin 7 in locking bearing pin positioning hole.Now, left locking fork 22, right locking fork 17 and locking bearing pin 7 are in self-locking state, and locking bearing pin 7 cannot be deviate from from connection segregating unit.Thus the quick linkage function of the rigidity achieving solar wing boxboard.
Wherein, a boss can also be set in the bottom of locking fork, thus can, by using the pole frock matched with boss shape, utilize fulcrum effect to realize locking the unblock of fork quickly and easily.
In the present invention, hinge launches driving element is spiral spring 3, belongs to a kind of plane scroll spring, and other springs also can be adopted if cylinder torsion spring, constant torque spring etc. are as launching driving element.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. connect fast the expansion hinge be separated, it is characterized in that, comprising: centre drawer hinge bracket assembly, centre drawer hinge assembly be connected segregating unit, peripheral unit is solar wing sleeve and solar wing boxboard;
Wherein, centre drawer hinge bracket assembly comprises centre drawer hinge bracket (1), round head bolt (12), axle (9), flat key (11) and spiral spring (3); Wherein, one end of centre drawer hinge bracket (1) is fixedly mounted on solar wing sleeve, the other end installation shaft (9); The inner of spiral spring (3) is arranged on axle (9), and outer end is fixedly mounted on centre drawer hinge bracket (1); Round head bolt (12) is arranged on centre drawer hinge bracket (1), and the axis perpendicular of the axis of round head bolt (12) and axle (9); Flat key (11) is fixedly mounted on axle (9);
Centre drawer hinge assembly comprises centre drawer hinge (6), thread screw (13), square nut (14), splined nut (15) and locking bearing pin (7), wherein, one end of centre drawer hinge (6) is installed with locking bearing pin (7), and the other end is provided with thread screw (13); Splined nut (15), square nut (14) lay respectively at the two ends of thread screw (13), and splined nut (15) is towards centre drawer hinge (6);
Connect segregating unit and comprise locking fork, locating cones, torsion spring, torsion spring rotating shaft (24), positioning dowel and connection detachable base (8); Wherein, connect detachable base (8) and be arranged on solar wing boxboard, and be provided with locking bearing pin positioning hole and the axially oriented groove of stop pin; Connect on detachable base (8) and be also provided with locking fork locating slot; Locking fork locating slot is positioned at the side of the axially oriented groove of stop pin, and perpendicular with the axially oriented groove of stop pin; Torsion spring rotating shaft is fixedly mounted on and connects on detachable base (8); Locking fork is positioned at the axially oriented groove of stop pin, and one end is socketed in torsion spring rotating shaft, and the other end installs positioning dowel; Locking fork locating slot by from lower width gradual change, its bottom is keyed end; Positioning dowel is positioned at locking fork locating slot; One end is fixed in torsion spring rotating shaft (24), and the other end is fixed on locking fork;
During rounding state, spiral spring (3) is compressive state; The outer end of flat key (11) is connected with centre drawer hinge (6);
During deployed condition, the thread screw (13) in centre drawer hinge assembly is coaxial with the round head bolt (12) in centre drawer hinge bracket assembly and contact;
During coupled condition, the locking bearing pin (7) in centre drawer hinge assembly is locked in the locking bearing pin positioning hole connected on detachable base (8) by the locking fork connected in segregating unit;
During separated state, the positioning dowel be arranged on locking fork is positioned at the keyed end of locking fork locating slot; Centre drawer hinge assembly be connected segregating unit and separate.
2. the expansion hinge connecting separation fast as claimed in claim 1, it is characterized in that, the upper-end surface of spiral spring (3) is provided with viscous damper, and the shell of viscous damper and centre drawer hinge bracket (1) fixedly mount.
3. the expansion hinge connecting separation fast as claimed in claim 1, is characterized in that there is gap between described square nut (14) and thread screw (13).
4. the expansion hinge connecting separation fast as claimed in claim 1, is characterized in that, the end face that connection detachable base contacts with centre drawer hinge is provided with locating cones, and centre drawer hinge corresponding position is provided with taper hole.
5. the expansion hinge connecting separation fast as claimed in claim 1, is characterized in that, the lower end surface of locking fork is provided with boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510757175.1A CN105387064B (en) | 2015-11-09 | 2015-11-09 | A kind of expansion hinge of quick connection separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510757175.1A CN105387064B (en) | 2015-11-09 | 2015-11-09 | A kind of expansion hinge of quick connection separation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105387064A true CN105387064A (en) | 2016-03-09 |
| CN105387064B CN105387064B (en) | 2017-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510757175.1A Active CN105387064B (en) | 2015-11-09 | 2015-11-09 | A kind of expansion hinge of quick connection separation |
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| CN (1) | CN105387064B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730325B (en) * | 2018-07-02 | 2019-09-17 | 上海卫星工程研究所 | A kind of low impact applied to deployable structure is from locking hinge |
| CN110525688A (en) * | 2019-08-06 | 2019-12-03 | 北京空间飞行器总体设计部 | A kind of in-orbit restructural expansible satellite system |
| CN111336175A (en) * | 2018-12-18 | 2020-06-26 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Wing hinge for a field device housing and field device housing with a wing hinge |
| CN113002804A (en) * | 2021-03-26 | 2021-06-22 | 上海宇航系统工程研究所 | Solar wing hinge driven by elastic force |
| CN113734472A (en) * | 2021-11-05 | 2021-12-03 | 北京微焓科技有限公司 | Satellite battery plate unfolding device |
| CN113958597B (en) * | 2021-10-18 | 2022-08-23 | 北京微纳星空科技有限公司 | Triggering locking hinge device |
| CN114992231A (en) * | 2022-08-03 | 2022-09-02 | 银河航天(北京)网络技术有限公司 | Adjustable locking mechanism and use method |
| CN116605421A (en) * | 2023-07-20 | 2023-08-18 | 银河航天(北京)网络技术有限公司 | Solar wingspan opening time sequence linkage control device and solar wingspan opening method |
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| US5911536A (en) * | 1996-11-30 | 1999-06-15 | Daimler-Benz Aerospace Ag | Joint for deploying and locking a solar panel or a reflection |
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| CN204355286U (en) * | 2014-10-31 | 2015-05-27 | 北京空间飞行器总体设计部 | One is inserted into locking type solar wing hinge |
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Patent Citations (5)
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| US5911536A (en) * | 1996-11-30 | 1999-06-15 | Daimler-Benz Aerospace Ag | Joint for deploying and locking a solar panel or a reflection |
| US6158088A (en) * | 1999-04-05 | 2000-12-12 | Lockheed Martin Corporation | Deployable hinge assembly providing end of travel damping |
| CN103267098A (en) * | 2013-05-16 | 2013-08-28 | 北京空间飞行器总体设计部 | Hinge for locking four-bar mechanism |
| CN204355286U (en) * | 2014-10-31 | 2015-05-27 | 北京空间飞行器总体设计部 | One is inserted into locking type solar wing hinge |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730325B (en) * | 2018-07-02 | 2019-09-17 | 上海卫星工程研究所 | A kind of low impact applied to deployable structure is from locking hinge |
| CN111336175A (en) * | 2018-12-18 | 2020-06-26 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Wing hinge for a field device housing and field device housing with a wing hinge |
| CN110525688A (en) * | 2019-08-06 | 2019-12-03 | 北京空间飞行器总体设计部 | A kind of in-orbit restructural expansible satellite system |
| CN113002804A (en) * | 2021-03-26 | 2021-06-22 | 上海宇航系统工程研究所 | Solar wing hinge driven by elastic force |
| CN113958597B (en) * | 2021-10-18 | 2022-08-23 | 北京微纳星空科技有限公司 | Triggering locking hinge device |
| CN113734472A (en) * | 2021-11-05 | 2021-12-03 | 北京微焓科技有限公司 | Satellite battery plate unfolding device |
| CN113734472B (en) * | 2021-11-05 | 2022-02-11 | 北京微焓科技有限公司 | Satellite battery plate unfolding device |
| CN114992231A (en) * | 2022-08-03 | 2022-09-02 | 银河航天(北京)网络技术有限公司 | Adjustable locking mechanism and use method |
| CN114992231B (en) * | 2022-08-03 | 2022-10-25 | 银河航天(北京)网络技术有限公司 | Adjustable locking mechanism and use method |
| CN116605421A (en) * | 2023-07-20 | 2023-08-18 | 银河航天(北京)网络技术有限公司 | Solar wingspan opening time sequence linkage control device and solar wingspan opening method |
| CN116605421B (en) * | 2023-07-20 | 2023-10-20 | 银河航天(北京)网络技术有限公司 | Solar wingspan opening time sequence linkage control device and solar wingspan opening method |
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| CN105387064B (en) | 2017-12-08 |
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