CN112758358A - Spring steel band unlocking device applied to satellite-borne yagi antenna unfolding mechanism - Google Patents
Spring steel band unlocking device applied to satellite-borne yagi antenna unfolding mechanism Download PDFInfo
- Publication number
- CN112758358A CN112758358A CN202110146866.3A CN202110146866A CN112758358A CN 112758358 A CN112758358 A CN 112758358A CN 202110146866 A CN202110146866 A CN 202110146866A CN 112758358 A CN112758358 A CN 112758358A
- Authority
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- China
- Prior art keywords
- antenna
- connecting rod
- bandage
- unlocking
- spring steel
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- 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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Links
- 229910000639 Spring steel Inorganic materials 0.000 title claims abstract description 50
- 230000007246 mechanism Effects 0.000 title claims abstract description 47
- 230000000452 restraining effect Effects 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000004698 Polyethylene Substances 0.000 description 16
- 239000000835 fiber Substances 0.000 description 16
- -1 polyethylene Polymers 0.000 description 16
- 229920000573 polyethylene Polymers 0.000 description 16
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/222—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles for deploying structures between a stowed and deployed state
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Details Of Aerials (AREA)
Abstract
The invention provides a spring steel band unlocking device applied to a satellite-borne yagi antenna unfolding mechanism, which comprises a support base, a connecting rod, an antenna, a connecting rod unlocking device for restraining the connecting rod and an antenna unlocking device for restraining the antenna, wherein the connecting rod unlocking device is arranged on the support base, the antenna unlocking device is arranged on the connecting rod, the connecting rod unlocking device comprises a connecting rod binding band locking part for locking the connecting rod and a connecting rod unlocking and cutting part for cutting the connecting rod binding band locking part, and the antenna unlocking device comprises an antenna binding band locking part for locking the antenna and an antenna unlocking and cutting part for cutting the antenna binding band locking part. The invention has the beneficial effects that: the compact and extremely light compressing and unlocking device is realized, reliable compressing, unlocking and unfolding under the condition of space navigation application scene force and heat are realized, the antenna unlocking device is separated from the connecting rod unlocking device, and the connecting rod and the antenna can be unfolded step by step.
Description
Technical Field
The invention relates to a satellite-borne antenna, in particular to a spring steel band unlocking device applied to a satellite-borne yagi antenna unfolding mechanism.
Background
The foldable mechanism is the most common mechanism because it can be folded to a smaller envelope size, which is more convenient for transportation and storage, and can obtain a larger electrical performance size after being unfolded. In the later period of the 20 th century and the 60 th year, along with the vigorous development of aerospace technology in each country, the foldable mechanism is rapidly developed into a novel aerospace mechanism due to the advantages of high specific strength, high specific stiffness, ultralow thermal expansion coefficient and high geometric stability, and is widely applied to aerospace by each country. Due to the limitation of the installation space and the carrying capacity of the satellite, the antenna needs to be folded to the minimum size before being launched into the space, and after the antenna enters a preset orbit of the space, the antenna is unfolded according to the design requirement through command control.
The unlocking device of the satellite-borne yagi antenna unfolding mechanism is a key part of a foldable antenna, and has strict requirements on the size, weight, reliability, freedom degree, safety and the like of the unlocking device of the antenna unfolding mechanism in the application of a satellite platform and the like, so that the unlocking device is urgently needed to be designed and can realize the step-by-step unfolding of a connecting rod and an antenna.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a spring steel belt unlocking device applied to a satellite-borne yagi antenna unfolding mechanism.
The invention provides a spring steel band unlocking device applied to a satellite-borne yagi antenna unfolding mechanism, which comprises a support base, a connecting rod, an antenna, a connecting rod unlocking device for restraining the connecting rod and an antenna unlocking device for restraining the antenna, wherein the connecting rod unlocking device is arranged on the support base, the antenna unlocking device is arranged on the connecting rod, the connecting rod unlocking device comprises a connecting rod binding band locking part for locking the connecting rod and a connecting rod unlocking and cutting part for cutting the connecting rod binding band locking part, and the antenna unlocking device comprises an antenna binding band locking part for locking the antenna and an antenna unlocking and cutting part for cutting the antenna binding band locking part.
As a further improvement of the present invention, the connecting rod band locking part comprises a connecting rod band for tightly binding the connecting rod, a connecting rod band mounting frame and a connecting rod band locking rope, wherein connecting rod band connecting pieces are respectively connected to two ends of the connecting rod band, the connecting rod band connecting pieces are respectively longitudinally locked and connected with the connecting rod band mounting frame, and the connecting rod band locking rope is used for tightly binding the connecting rod band connecting pieces and the connecting rod band mounting frame, so that the transverse locking connection of the connecting rod band connecting pieces and the connecting rod band mounting frame is realized.
As a further improvement of the present invention, the link unlocking cut portion includes a link strap cutter for cutting the link strap locking string, thereby releasing the restraint of the link strap on the link.
As a further improvement of the present invention, the link belt cutter is a heating cutter, a mechanical cutter, or an electromagnetic cutter.
As a further improvement of the invention, the link strap cutter is preferably a low impact cutter, low impact cutter and the link strap locking cord is preferably a high strength polyethylene fiber cord, high strength polyethylene fiber cord.
The connecting rod bandage is a spring steel belt, and the connecting rod bandage connecting piece and the connecting rod bandage mounting frame are longitudinally locked and connected through a trapezoidal structure.
As a further improvement of the invention, the connecting rod bandage is connected with a connecting rod bandage pre-tightening mechanism, the connecting rod bandage locking rope is connected with a connecting rod bandage locking rope pre-tightening mechanism, and the connecting rod bandage pre-tightening mechanism and the connecting rod bandage locking rope pre-tightening mechanism are both screw adjusting pre-tightening mechanisms.
As a further improvement of the present invention, the antenna strap locking portion includes an antenna strap for fastening an antenna, a cross support frame, and an antenna strap locking cord, one end of the antenna strap is connected to a bottom end of the cross support frame, the other end of the antenna strap is fixed to a top end of the cross support frame by the antenna strap locking cord, the antenna is fastened to the cross support frame by the antenna strap, the antenna unlocking cutting portion is an antenna unlocking cutter, and the antenna unlocking cutter is configured to cut off the antenna strap locking cord, so that the antenna is unlocked by the antenna strap.
As a further improvement of the present invention, the left and right ends and the top end of the cross-shaped support frame are provided with bosses, the end of each boss is provided with a groove for accommodating an antenna strap, an elastic ejection mechanism is arranged in the groove at the top end of the cross-shaped support frame, the elastic force of the elastic ejection mechanism acts on the antenna strap, and when the antenna unlocking cutter cuts off the antenna strap locking rope, the elastic ejection mechanism ejects the antenna strap.
As a further improvement of the invention, one end of the antenna binding belt locking rope is fixed on the groove at the top end of the cross-shaped support frame, and the other end of the antenna binding belt locking rope penetrates through the hollow stud and is fixed at the bottom end of the cross-shaped support frame.
As a further improvement of the invention, the antenna bandage is a spring steel belt, and the end part of the spring steel belt is provided with a through hole for the antenna bandage locking rope to pass through.
As a further improvement of the invention, a helve button is arranged on the through hole.
As a further improvement of the present invention, the antenna unlock cutter is a heating cutter, a mechanical cutter, or an electromagnetic cutter.
As a further improvement of the present invention, the antenna delatch cutter is preferably a low impact cutter, and the antenna strap locking cord is preferably a high strength polyethylene fiber cord.
As a further improvement of the present invention, the link strap locking cord and the antenna strap locking cord are both cords that meet the requirements of characteristics, such as having characteristics in a space environment, and trained to avoid creep.
As a further improvement of the invention, the spring steel strip is used for opening the restraint of the antenna and the connecting rod under the action of self restoring force after the restraint is relieved, and becomes a rigid structure after being stabilized, thus being suitable for aerospace environment.
The invention has the beneficial effects that: by the scheme, the antenna unlocking device is separated from the connecting rod unlocking device, so that the connecting rod and the antenna can be unfolded step by step.
Drawings
Fig. 1 is a schematic drawing of a furled state of a spring steel band unlocking device applied to a satellite-borne yagi antenna unfolding mechanism.
Fig. 2 is a schematic diagram of a connecting rod unlocking device of a spring steel belt unlocking device applied to a satellite-borne yagi antenna unfolding mechanism.
Fig. 3 is a drawing schematic view of an antenna unlocking device of a spring steel band unlocking device applied to a satellite-borne yagi antenna unfolding mechanism.
Fig. 4 is a schematic diagram of an antenna unlocking device of a spring steel band unlocking device applied to a satellite-borne yagi antenna unfolding mechanism.
Detailed Description
The invention is further described with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1, a schematic drawing of a furled state of a spring steel band unlocking device applied to a satellite-borne yagi antenna unfolding mechanism is shown. As shown in the drawings, the present invention mainly includes link unlocking devices 100 and 110 and antenna unlocking devices 200 and 220, which are respectively mounted on support bases 303 and 304 and links 402 and 403, and also includes support bases 301 and 302 and a link 401.
Referring to fig. 2, a schematic diagram of a link unlocking device of a satellite-borne yagi antenna unfolding mechanism is shown. As shown, the link unlocking device of the present invention includes a low impact cutter 101, a spring steel band 102, a spring steel band connector 103, a low impact cutter mounting bracket 104, a fixed tripod 105, and a high strength polyethylene fiber wire 106. The spring steel strap connector 103 is engaged with the low impact cutter mounting bracket 104 by a trapezoidal configuration, with lateral restraint provided by high strength polyethylene fiber strands 106 so that the spring steel strap connector is restrained with the low impact cutter mounting bracket. When the connecting rod unlocking device works, the low impact cutter 101 is electrified, the low impact cutter cuts high-strength polyethylene fiber wires, and the spring steel belt 102 and the spring steel belt connecting piece 103 are released from constraint and opened, so that the constraint on the connecting rod is released.
Preferably, the spring steel band 102 of the present invention is used for opening the antenna and the link under the action of self-restoring force after the constraint is released, and is stable and rigid, so that the antenna and the link are suitable for aerospace environment.
Preferably, the present invention further designs a pre-tightening structure of the spring steel band 102 and the high strength polyethylene fiber 106, the low impact cutter mounting bracket 104 is connected to the fixed tripod 105, and the low impact cutter mounting bracket 104 can be moved downward by the adjusting screw 107, thereby tightening the spring steel band 102. One end of the high-strength polyethylene fiber wire 106 is fixed on the low impact cutter mounting frame 104, the other end of the high-strength polyethylene fiber wire passes through the hollow screw 108 and is clamped by a rope head, the hollow screw 108 is mounted on the low impact cutter mounting frame 104 through threads, and the pre-tightening of the high-strength polyethylene fiber wire 106 can be realized by rotating the position of the hollow screw 108.
Referring to fig. 3 and 4, schematic diagrams of the antenna unlocking device of the satellite-borne yagi antenna unfolding mechanism are shown. As shown in the figure, the antenna unlocking device of the present invention includes a cross support 201, a plurality of spring steel bands 202, a low impact cutter 203, a low impact cutter mounting seat 204, a high strength polyethylene fiber wire 205, a plurality of springs 206, an externally threaded hollow stud 207, an internally threaded hollow pin 208, a eyelet 209, and a spring top 210. When the antenna unlocking device works, the low-impact cutter is electrified, the low-impact cutter cuts the rope, the spring steel belt 202 is released from constraint and opened under the action of the spring 206, so that the constraint on the antenna 501 is released, and the antenna is unfolded under the action of self restoring force.
Preferably, in the present invention, the spring steel band 202 is fixed at the lower end of the cross support 201 and wound around 180 ° to wrap the antenna 501 on the middle annular boss of the cross support, and the spring steel band is sleeved in the cylindrical boss at the upper part of the cross support, so as to ensure the reliable restraint of the antenna. The cylindrical spring 206 structure is further designed at the cylindrical boss at the upper part of the cross support frame fixed with the spring steel belt and is positioned at the lower part of the spring steel belt 202, and the auxiliary spring steel belt 202 is separated from the cylindrical boss of the cross support frame 201. The installation mode of the cylindrical spring 206 adopts a mode of first installation and then pre-tightening, the lower part of the cylindrical spring 206 is connected with the spring top piece 210, and the position of the spring top piece 210 can be adjusted through a screw arranged at the lower part of the cross-shaped support frame 201 so as to pre-tighten the cylindrical spring 206.
Preferably, one end of the high-strength polyethylene fiber 206 of the present invention is fixed in the middle groove of the upper column-shaped boss of the cross brace 201 to prevent the knot from affecting the opening of the spring steel band 202, and the other end is fixed at the lower end of the cross brace 201 through the connecting rod and the external thread hollow screw 207. The structure of the external thread hollow stud 207, the internal thread hollow pin 208 and the cylindrical spring 206 is designed, when the high-strength polyethylene fiber wire 205 is pre-tightened, the mode of half turn of the external thread hollow stud 207 and half turn of the internal thread hollow pin 208 can be adopted, and the phenomenon that the high-strength polyethylene fiber wire 205 is cut by the low-impact cutter 203 due to too much rotation is prevented. Here, the cylindrical spring 206 serves to secure a pre-tension when the high-strength polyethylene fiber 205 is subject to creep.
Preferably, according to the present invention, the eyelet 209 is installed on the spring steel band 202, so as to prevent the problem of excessive friction between the spring steel band 202 and the upper cylindrical boss of the cross support 201, and simultaneously, the round structure thereof reduces the friction between the spring steel band 202 and the high strength polyethylene fiber 206.
The spring steel band unlocking device applied to the satellite-borne yagi antenna unfolding mechanism provided by the invention separates the antenna unlocking device from the connecting rod unlocking device, creates conditions for unfolding the satellite-borne yagi antenna unfolding mechanism by adopting a mode of unfolding an antenna and a connecting rod step by step, and can avoid the uncertain problem in an aerospace weightlessness environment by fixing and unlocking the spring steel band.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. The utility model provides a be applied to spring steel band unlocking device of satellite-borne yagi antenna deployment mechanism which characterized in that: the device comprises a support base, a connecting rod, an antenna, a connecting rod unlocking device for restricting the connecting rod and an antenna unlocking device for restricting the antenna; the antenna unlocking device comprises an antenna strap locking part for locking the antenna and an antenna unlocking and cutting part for cutting the antenna strap locking part.
2. The spring steel band unlocking device applied to the satellite-borne yagi antenna unfolding mechanism is characterized in that: the connecting rod bandage locking part comprises a connecting rod bandage, a connecting rod bandage mounting frame and a connecting rod bandage locking rope, wherein the connecting rod bandage, the connecting rod bandage mounting frame and the connecting rod bandage locking rope are used for tightly binding the connecting rod, connecting rod bandage connecting pieces are connected to two ends of the connecting rod bandage respectively, the connecting rod bandage connecting pieces are longitudinally locked and connected with the connecting rod bandage mounting frame respectively, the connecting rod bandage locking rope is tightly bound, the connecting rod bandage connecting pieces are connected with the connecting rod bandage mounting frame, and therefore the connecting rod bandage connecting pieces are transversely locked and connected with.
3. The spring steel band unlocking device applied to the satellite-borne yagi antenna unfolding mechanism is characterized in that: the link unlocking cutting part includes a link strap cutter for cutting the link strap locking string, thereby releasing the link strap from restraining the link.
4. The spring steel band unlocking device applied to the satellite-borne yagi antenna unfolding mechanism is characterized in that: the connecting rod bandage cutter is a heating cutter, a mechanical cutter or an electromagnetic cutter.
5. The spring steel band unlocking device applied to the satellite-borne yagi antenna unfolding mechanism is characterized in that: the connecting rod bandage is a spring steel belt, and the connecting rod bandage connecting piece and the connecting rod bandage mounting frame are longitudinally locked and connected through a trapezoidal structure.
6. The spring steel band unlocking device applied to the satellite-borne yagi antenna unfolding mechanism is characterized in that: the connecting rod bandage is connected with a connecting rod bandage pre-tightening mechanism, the connecting rod bandage locking rope is connected with a connecting rod bandage locking rope pre-tightening mechanism, and the connecting rod bandage pre-tightening mechanism and the connecting rod bandage locking rope pre-tightening mechanism are screw adjusting pre-tightening mechanisms.
7. The spring steel band unlocking device applied to the satellite-borne yagi antenna unfolding mechanism is characterized in that: the antenna binding band locking part comprises an antenna binding band for tightly binding an antenna, a cross-shaped support frame and an antenna binding band locking rope, one end of the antenna binding band is connected with the bottom end of the cross-shaped support frame, the other end of the antenna binding band is fixed to the top end of the cross-shaped support frame through the antenna binding band locking rope, the antenna is tightly bound on the cross-shaped support frame through the antenna binding band, the antenna unlocking cutting part is an antenna unlocking cutter, and the antenna unlocking cutter is used for cutting off the antenna binding band locking rope, so that the restraint of the antenna binding band on the antenna is released.
8. The device for unlocking the spring steel strip applied to the unfolding mechanism of the satellite-borne yagi antenna as claimed in claim 7, wherein: both ends and top all are equipped with the boss about the cross support frame, every the end of boss all is equipped with the recess of holding antenna bandage, be equipped with elasticity back-off mechanism within the recess on the top of cross support frame, elasticity back-off mechanism's elasticity acts on the antenna bandage, work as antenna unblock cutterbar cuts off during antenna bandage locking rope, elasticity back-off mechanism will the antenna bandage backs off.
9. The device for unlocking the spring steel strip applied to the unfolding mechanism of the satellite-borne yagi antenna as claimed in claim 7, wherein: one end of the antenna binding band locking rope is fixed on the groove at the top end of the cross-shaped support frame, and the other end of the antenna binding band locking rope penetrates through the hollow stud and is fixed at the bottom end of the cross-shaped support frame.
10. The device for unlocking the spring steel strip applied to the unfolding mechanism of the satellite-borne yagi antenna as claimed in claim 7, wherein: the antenna bandage is a spring steel belt, a through hole for the antenna bandage locking rope to pass through is formed in the end portion of the spring steel belt, and the antenna unlocking cutter is a heating cutter, a mechanical cutter or an electromagnetic cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110146866.3A CN112758358B (en) | 2021-02-03 | 2021-02-03 | Spring steel band unlocking device applied to satellite-borne yagi antenna unfolding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110146866.3A CN112758358B (en) | 2021-02-03 | 2021-02-03 | Spring steel band unlocking device applied to satellite-borne yagi antenna unfolding mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112758358A true CN112758358A (en) | 2021-05-07 |
| CN112758358B CN112758358B (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110146866.3A Active CN112758358B (en) | 2021-02-03 | 2021-02-03 | Spring steel band unlocking device applied to satellite-borne yagi antenna unfolding mechanism |
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| CN (1) | CN112758358B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115473053A (en) * | 2022-09-22 | 2022-12-13 | 深圳航天东方红卫星有限公司 | Folding and unfolding satellite-borne yagi antenna locked in encircling mode |
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| CN206134948U (en) * | 2016-10-20 | 2017-04-26 | 上海航天测控通信研究所 | Light -duty deployable antenna of high rate of accomodating |
| CN207398325U (en) * | 2017-11-21 | 2018-05-22 | 上海航天测控通信研究所 | A kind of light-duty deployable VDES array antennas |
| CN108945529A (en) * | 2018-06-15 | 2018-12-07 | 上海卫星工程研究所 | A kind of compression release device of spaceborne deployment rod |
| CN211789492U (en) * | 2020-04-17 | 2020-10-27 | 航天行云科技有限公司 | Satellite antenna unfolding device |
-
2021
- 2021-02-03 CN CN202110146866.3A patent/CN112758358B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100215424A1 (en) * | 2009-02-24 | 2010-08-26 | Hr Textron Inc. | Locking device with a shape memory alloy actuator and method of use |
| CN206134948U (en) * | 2016-10-20 | 2017-04-26 | 上海航天测控通信研究所 | Light -duty deployable antenna of high rate of accomodating |
| CN207398325U (en) * | 2017-11-21 | 2018-05-22 | 上海航天测控通信研究所 | A kind of light-duty deployable VDES array antennas |
| CN108945529A (en) * | 2018-06-15 | 2018-12-07 | 上海卫星工程研究所 | A kind of compression release device of spaceborne deployment rod |
| CN211789492U (en) * | 2020-04-17 | 2020-10-27 | 航天行云科技有限公司 | Satellite antenna unfolding device |
Non-Patent Citations (1)
| Title |
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| 张慧芳: "空间机械臂锁紧装置设计与分析", 《中国优秀硕士学位论文全文数据库-信息科技辑》 * |
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| CN115473053A (en) * | 2022-09-22 | 2022-12-13 | 深圳航天东方红卫星有限公司 | Folding and unfolding satellite-borne yagi antenna locked in encircling mode |
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| Publication number | Publication date |
|---|---|
| CN112758358B (en) | 2022-07-29 |
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