CN108974393B - Four-point linkage type ejection device - Google Patents
Four-point linkage type ejection device Download PDFInfo
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- CN108974393B CN108974393B CN201810006323.XA CN201810006323A CN108974393B CN 108974393 B CN108974393 B CN 108974393B CN 201810006323 A CN201810006323 A CN 201810006323A CN 108974393 B CN108974393 B CN 108974393B
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- separation
- connecting rod
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- hinge
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- 238000000926 separation method Methods 0.000 claims abstract description 86
- 230000006835 compression Effects 0.000 claims abstract description 3
- 238000007906 compression Methods 0.000 claims abstract description 3
- 238000005056 compaction Methods 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 108091092878 Microsatellite Proteins 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- 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
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
- B64G1/645—Separators
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Adornments (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a four-point linkage type ejection device which comprises a compression flange (10), a base (11), a linkage rod (15), a separation connecting rod C (16), a separation connecting rod B (17), a separation connecting rod A (18), a separation push rod (19), a separation spring (20) and an L-shaped connecting rod (21). The separation push rod synchronously acts, so that the stability of the load posture in the ejection process is ensured, and meanwhile, the strict requirement on the load center position is not met. The connecting mode of the separation push rod, the separation connecting rod and the linkage rod is adopted to be arranged on the base. In the ejection state, the 4 groups of ejection devices synchronously act, so that the stability of the load posture in the ejection process is ensured, and the reliability of load ejection is improved.
Description
Technical Field
The invention relates to an ejection device, in particular to a four-point linkage type ejection device.
Background
In the aerospace field, the connection and release of payloads to vehicles is widespread, such as multi-rocket stages and stages, satellite and launch vehicles, satellite and spacecraft, solar wing and spacecraft, deployment antennas and spacecraft, and the like. When the effective load is separated, the effective load is required to be stably pushed away from the carrier, the currently adopted mode is that an ejection device for directly pushing the load is based on a single spring or a spring array, in order to ensure the stable posture of the load in the ejection process, the parameters of the spring or the position of a load interface are required to be balanced according to the position of the mass center of the load, so that the resultant moment generated by the ejection force on the satellite is zero, if the mass center of the load is not in the geometric center of the spring array, the position of the mass center is generally required to be adjusted by installing a balancing weight, and the load quality is increased. And an ejection device which restrains the freedom degree of the effective load through the guide rail, such as 201510777309.6, and a modularized low-impact linkage type microsatellite separation device, when the separation device is in a separation state, 4 pressure springs are used for pushing the guide rods, and the 4 guide rods respectively push the buckling surfaces on the satellite to push the satellite to be separated from the base. The proposal ensures the gesture though the guide rail, if the ejection force is larger to the resultant moment generated by the satellite, the risk of satellite blocking on the guide rail or unsmooth unlocking or insufficient initial ejection speed still exists, thus the accurate measurement of the load mass center is required as well, and the elastic accuracy of each spring is strictly required. For the ejection device without the guide rail, in order to stabilize the load gesture in the ejection process, the thrust overload centroid is required, so that strict requirements are imposed on the thrust-deformation curve of each spring.
Disclosure of Invention
The invention aims to provide a four-point linkage type ejection device, which overcomes the defects of the prior art and realizes the stable ejection of a load through 4 push rods which synchronously act.
The technical scheme of the invention is as follows: a four-point linkage type ejection device comprises a compression flange, a base, a linkage rod, a separation connecting rod C, a separation connecting rod B, a separation connecting rod A, a separation push rod, a separation spring and an L-shaped connecting rod.
The base is a rectangular open cavity piece, a hinge hole is formed in the cavity, and 4 corner points on the inner side of the cavity are provided with hinge shafts;
the compaction flange is a block body with a compaction surface and a mounting hole, the upper end of the compaction flange is provided with the mounting hole, and the lower part of the compaction flange is L-shaped;
the separation push rod is a cylindrical rod piece, and the lower end of the separation push rod is provided with a hinge shaft;
the compaction flange is arranged at the upper end of the base and is compacted by another compaction unlocking device;
the separation connecting rod A is a bar-shaped block body with hinge holes at two ends;
the separating connecting rod B is a block-shaped body with a hinge shaft respectively arranged at the upper side, the lower left and the lower right, and a hinge hole is arranged at the center;
the separation connecting rod C is a bar-shaped block body with a hinge shaft at one side and a hinge hole at one side;
the linkage rod is a bar-shaped block body with hinge holes on two sides, the hinge holes are arranged at the positions close to one end, and the direction of the opening is perpendicular to the other two holes;
the L-shaped connecting rod is an L-shaped block body with hinge holes at two sides and corners;
in the unlocking state, the pressing flange is pressed against the base by the pressing mechanism (not shown in the drawing), the upper end face of the separation push rod is pressed against the lower surface of the pressing flange, the lower end of the separation push rod is hinged with the upper end of the separation connecting rod A, the lower end of the separation connecting rod A is hinged with the right side of the separation connecting rod B, the upper end of the separation connecting rod B is hinged with the right end of the separation spring, the left end of the separation connecting rod B is hinged with the right end of the separation connecting rod C, the hinge hole in the center of the separation connecting rod B is hinged with the hinge hole in the base, the left end of the separation spring is hinged with the hinge hole in the base, the left end of the separation connecting rod C is hinged with the linkage rod, the hinge holes at the two ends of the linkage rod are respectively hinged with two L-shaped connecting rods, and the hinge hole at the inflection point of the L-shaped connecting rod is hinged with the hinge shaft of the base.
The ejection mechanisms are arranged at 4 groups of corner points of the base in a central symmetry mode.
The unlocking spring is a tension spring.
The invention has the advantages that:
1. according to the four-point linkage type ejection device, due to the synchronous action of the separation push rod, the stability of the load posture in the ejection process is ensured, and meanwhile, the strict requirement on the load center position is not met.
2. According to the four-point linkage type ejection device, due to linkage of the separation push rod, the consistency of spring parameters is not strictly required.
Drawings
FIG. 1 is a partial cross-sectional view of a four-point linked ejector in a compressed state;
FIG. 2 is a partial cross-sectional view of a four-point linked ejector in an ejected state;
FIG. 3 is a schematic diagram of the coordinated operation of the four-point coordinated catapult in a compressed state;
FIG. 4 is a schematic diagram of the coordinated operation of the four-point coordinated catapulting device in the catapulting state;
fig. 5 is an external view of a four-point linkage type ejection device.
Detailed Description
As shown in fig. 1, 2, 3, 4 and 5, a four-point linkage type ejection device is characterized by comprising a pressing flange 10, a base 11, a linkage rod 15, a separation connecting rod C16, a separation connecting rod B17, a separation connecting rod a18, a separation push rod 19, a separation spring 20 and an L-shaped connecting rod 21;
the base 11 is a square central symmetry open cavity piece, hinge holes 11-6 and 11-7 are formed in the cavity, and hinge shafts 11-8 are arranged at 4 corner points on the inner side of the cavity;
the compaction flange 10 is a block body with a compaction surface and a mounting hole, the upper end of the compaction flange is provided with the mounting hole, the lower part of the compaction flange is L-shaped, and the transverse surface of the lower end of the compaction flange is a compaction surface;
the separation push rod 19 is a cylindrical rod piece, and the lower end of the separation push rod is provided with a hinge shaft;
the pressing flange 10 is arranged at the upper end of the base 11 and is pressed by another pressing and unlocking device;
the separation connecting rod A18 is a bar-shaped block body with hinge holes at two ends;
the separation connecting rod B17 is a square block body with a hinge shaft respectively arranged at the upper side, the lower left and the lower right, and a hinge hole is arranged at the center;
the separation connecting rod C16 is a bar-shaped block body with a hinge shaft at one side and a hinge hole at one side;
the linkage rod 15 is a bar-shaped block body with hinging holes on two sides, the hinging holes are arranged at the position close to one end, and the direction of the hole opening is perpendicular to the other two holes;
the L-shaped connecting rod 21 is an L-shaped block body with hinge holes at two sides and corners;
in the unlocking state, the pressing flange 10 is pressed against the base 11 by a pressing mechanism (not shown in the drawing), the upper end surface of the separation push rod 19 is pressed against the lower surface of the pressing flange 10, the lower end of the separation push rod is hinged to the upper end of the separation link A18, the lower end of the separation link A18 is hinged to the right side of the separation link B17, the upper end of the separation link B17 is hinged to the right end of the separation spring 20, the left end of the separation link B17 is hinged to the right end of the separation link C16, the hinge hole in the center of the separation link B17 is hinged to the hinge hole 11-6 on the base, the left end of the separation spring 20 is hinged to the hinge hole 11-7 on the base, the left end of the separation link C16 is hinged to the linkage rod 15, the hinge holes at the two ends of the linkage rod are hinged to the inflection points of the two L-shaped links 21 respectively, and the hinge hole at the L-shaped link 21 is hinged to the hinge shaft 11-8 of the base 11.
The working process comprises the following steps:
as shown in fig. 1, in the compressed state, the separation spring 20 is in a stretched state.
As shown in fig. 2, after the pressing flange 10 is unlocked, the separation spring 20 pulls the separation link B17 to rotate counterclockwise about the hinge hole 11-6 on the base 11, the separation link B17 pushes the separation link a18 and the separation push rod 19 to move upward, and the separation link B17 pulls the separation link C16 to move rightward.
As shown in fig. 3 and 4, when any one of the above-mentioned ejector mechanisms is operated, the separating link C16 drives the linkage rod 15 and the L-shaped link 21 to move counterclockwise, wherein the L-shaped link 21 rotates around the hinge shaft 11-8 on the base.
Claims (3)
1. A four-point linkage type ejection device is characterized in that: the device comprises a compression flange (10), a base (11), a linkage rod (15), a separation connecting rod C (16), a separation connecting rod B (17), a separation connecting rod A (18), a separation push rod (19), a separation spring (20) and an L-shaped connecting rod (21); the base (11) is a square central symmetry open cavity piece, hinge holes (11-6, 11-7) are formed in the cavity, and hinge shafts (11-8) are arranged at 4 corner points on the inner side of the cavity;
the compaction flange (10) is a block body with a compaction surface and a mounting hole, the upper end of the compaction flange is provided with the mounting hole, the lower part of the flange is L-shaped, and the transverse surface of the lower end of the compaction flange is a compaction surface;
the separation push rod (19) is a cylindrical rod piece, and the lower end of the separation push rod is provided with a hinge shaft;
the compaction flange (10) is arranged at the upper end of the base (11) and is compacted by another compaction unlocking device;
the separation connecting rod A (18) is a bar-shaped block body with hinge holes at two ends;
the separation connecting rod B (17) is an inverted T-shaped block body with an upper side, a left lower side and a right lower side provided with hinge shafts respectively, and a hinge hole is arranged in the center position;
the separation connecting rod C (16) is a bar-shaped block body with a hinge shaft at one side and a hinge hole at one side;
the linkage rod (15) is a bar-shaped block body with hinged holes on two sides, the position close to one end is provided with the hinged holes, and the direction of the hole opening is perpendicular to the other two holes;
the L-shaped connecting rod (21) is an L-shaped block body with hinge holes at two sides and corners;
in the unlocking state, the pressing mechanism presses the pressing flange (10) and the base (11), the upper end face of the separation push rod (19) is pressed with the lower surface of the pressing flange (10), the lower end of the separation push rod is hinged with the upper end of the separation connecting rod A (18), the lower end of the separation connecting rod A (18) is hinged with the right side of the separation connecting rod B (17), the upper end of the separation connecting rod B (17) is hinged with the right end of the separation spring (20), the left end of the separation connecting rod B (17) is hinged with the right end of the separation connecting rod C (16), the hinge hole in the center of the separation connecting rod B (17) is hinged with the hinge hole (11-6) in the base, the left end of the separation spring (20) is hinged with the hinge hole (11-7) in the base, the left end of the separation connecting rod C (16) is hinged with the linkage rod (15), the hinge holes at two ends of the linkage rod are respectively hinged with the two L-shaped connecting rods (21), and the hinge hole at the inflection point of the L-shaped connecting rod (21) is hinged with the hinge shaft (11-8) of the base (11).
2. A four-point linked ejector as in claim 1, wherein the L-shaped link (21) has an "L" angle of 90 °.
3. The four-point linkage ejection device according to claim 1, wherein the separating spring (20) is a tension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006323.XA CN108974393B (en) | 2018-01-04 | 2018-01-04 | Four-point linkage type ejection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006323.XA CN108974393B (en) | 2018-01-04 | 2018-01-04 | Four-point linkage type ejection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108974393A CN108974393A (en) | 2018-12-11 |
| CN108974393B true CN108974393B (en) | 2024-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810006323.XA Active CN108974393B (en) | 2018-01-04 | 2018-01-04 | Four-point linkage type ejection device |
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| Country | Link |
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| CN (1) | CN108974393B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304547B (en) * | 2020-08-31 | 2023-04-14 | 中国空间技术研究院 | Free collision adsorption test device |
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| CN101157388A (en) * | 2007-11-21 | 2008-04-09 | 航天东方红卫星有限公司 | Mechanism for separating stars or star-arrow |
| RU2396191C1 (en) * | 2009-03-18 | 2010-08-10 | Федеральное государственное унитарное предприятие "Государственный космический научно-производственный центр имени М.В. Хруничева" | Payload separation system |
| CN105659747B (en) * | 2010-10-20 | 2014-05-28 | 北京空间飞行器总体设计部 | A kind of belt for power transmission shaft compresses releasing device |
| CN104527997A (en) * | 2015-01-20 | 2015-04-22 | 浙江大学 | Synchronizing device used for being connected with and unlocking satellite |
| KR20150047076A (en) * | 2013-10-22 | 2015-05-04 | 고려대학교 산학협력단 | Torque-free linkage unit |
| CN104677199A (en) * | 2015-01-21 | 2015-06-03 | 浙江理工大学 | Single-drive synchronous unfolding mechanism provided with multiple folding control planes |
| CN105346736A (en) * | 2015-11-12 | 2016-02-24 | 哈尔滨工业大学 | Modular low-impact linkage type microsatellite separating unit |
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| CN207791197U (en) * | 2018-01-04 | 2018-08-31 | 北京微分航宇科技有限公司 | A kind of four point-linked catapult-launching gears |
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| KR101117100B1 (en) * | 2009-09-03 | 2012-02-22 | 국방과학연구소 | Separation device of ejector motor for portable missile |
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| CN101157388A (en) * | 2007-11-21 | 2008-04-09 | 航天东方红卫星有限公司 | Mechanism for separating stars or star-arrow |
| RU2396191C1 (en) * | 2009-03-18 | 2010-08-10 | Федеральное государственное унитарное предприятие "Государственный космический научно-производственный центр имени М.В. Хруничева" | Payload separation system |
| CN105659747B (en) * | 2010-10-20 | 2014-05-28 | 北京空间飞行器总体设计部 | A kind of belt for power transmission shaft compresses releasing device |
| KR20150047076A (en) * | 2013-10-22 | 2015-05-04 | 고려대학교 산학협력단 | Torque-free linkage unit |
| CN104527997A (en) * | 2015-01-20 | 2015-04-22 | 浙江大学 | Synchronizing device used for being connected with and unlocking satellite |
| CN104677199A (en) * | 2015-01-21 | 2015-06-03 | 浙江理工大学 | Single-drive synchronous unfolding mechanism provided with multiple folding control planes |
| CN105346736A (en) * | 2015-11-12 | 2016-02-24 | 哈尔滨工业大学 | Modular low-impact linkage type microsatellite separating unit |
| CN106742081A (en) * | 2016-11-29 | 2017-05-31 | 航天东方红卫星有限公司 | A kind of separating mechanism based on rotation pressure ring unblock |
| CN207791197U (en) * | 2018-01-04 | 2018-08-31 | 北京微分航宇科技有限公司 | A kind of four point-linked catapult-launching gears |
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| CN108974393A (en) | 2018-12-11 |
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