CN108183307B - Large-diameter umbrella-shaped antenna unfolding mechanism - Google Patents
Large-diameter umbrella-shaped antenna unfolding mechanism Download PDFInfo
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- CN108183307B CN108183307B CN201810169146.7A CN201810169146A CN108183307B CN 108183307 B CN108183307 B CN 108183307B CN 201810169146 A CN201810169146 A CN 201810169146A CN 108183307 B CN108183307 B CN 108183307B
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- connecting rod
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- 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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- 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
- H01Q1/084—Pivotable antennas
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Abstract
The invention discloses a large-caliber umbrella-shaped antenna unfolding mechanism which comprises a driver, a bevel gear set, a support, a lead screw, a sliding block, a connecting rod, a rib assembly, a spring and a stop pin, wherein the bevel gear set is arranged on the support; the support is of a hollow cylinder structure, one end of the support is provided with a driver for providing power, the inner side of the support is provided with a plurality of lead screws for transmitting power, the driver is connected with the lead screws through a bevel gear set, and the lead screws are provided with slide blocks which only translate along the axial direction of the lead screws; the rib subassembly that is used for joining in marriage the dress antenna is installed to the support other end, and the rib subassembly passes through the connecting rod and is articulated with the slider, and the support outside is equipped with the backing pin that is used for locking rib subassembly through spring pressure. According to the invention, through the matching of the driver, the bevel gear set, the support, the lead screw, the sliding block, the connecting rod, the rib component, the spring and the stop pin, the umbrella-shaped antenna is synchronously unfolded, the unfolding moment is enhanced, the volume of the device is reduced, the safety and reliability of the unfolding process are ensured, and the defects of the traditional umbrella-shaped antenna unfolding mechanism are overcome.
Description
Technical Field
The invention relates to a large-caliber umbrella-shaped antenna unfolding mechanism, and belongs to the technical field of satellite antenna unfolding structures.
Background
The large-aperture umbrella antenna mainly comprises an antenna rib, a metal net, a power unfolding mechanism, a feed source and the like, is an important effective load of a truss structure satellite in China, is in a folded state in a launching stage due to the limitation of a rocket fairing, and is unfolded only by an unfolding telemetering signal after the satellite is in orbit, and the antenna unfolding mechanism provides power for unfolding the large-aperture umbrella antenna and is an important component of the antenna.
The traditional umbrella-shaped antenna unfolding mechanism mainly has the problems of poor synchronism, small moment, overlarge volume and low reliability.
Disclosure of Invention
The technical problem solved by the invention is as follows: the invention overcomes the defects of the prior art, and provides a large-diameter umbrella-shaped antenna unfolding mechanism, which realizes the synchronous unfolding of umbrella-shaped antennas, enhances the unfolding moment, reduces the volume of the device, ensures the safety and reliability of the unfolding process and makes up the defects of the traditional umbrella-shaped antenna unfolding mechanism by matching a driver, a bevel gear set, a support, a lead screw, a sliding block, a connecting rod, a rib assembly, a spring and a stop pin.
The technical solution of the invention is as follows:
a large-caliber umbrella-shaped antenna unfolding mechanism comprises a driver, a bevel gear set, a support, a lead screw, a sliding block, a connecting rod, a rib assembly, a spring and a stop pin; the support is of a hollow cylinder structure, one end of the support is provided with a driver for providing power, the inner side of the support is provided with a plurality of lead screws for transmitting power, the driver is connected with the lead screws through a bevel gear set, and the lead screws are provided with slide blocks which only translate along the axial direction of the lead screws; the rib subassembly that is used for joining in marriage the dress antenna is installed to the support other end, and the rib subassembly passes through the connecting rod and is articulated with the slider, and the support outside is equipped with the backing pin that is used for locking rib subassembly through spring pressure.
In the above deployment mechanism for a large-aperture umbrella antenna, the driver includes a motor, a rotary transformer and a speed reducer; the motor adopts a brushless torque motor, and the speed reducer adopts a harmonic gear speed reducer; a rotary transformer is connected in series between the motor and the speed reducer.
In the above-mentioned large-aperture umbrella-shaped antenna deployment mechanism, the bevel gear set includes a first bevel gear and a second bevel gear; the first bevel gear is connected with the driver and meshed with the plurality of second bevel gears; the second bevel gear is connected with the screw rod.
In the above-mentioned large-caliber umbrella-shaped antenna deployment mechanism, the side wall of the support is provided with a plurality of through holes for penetrating the connecting rod, and the inner side of the support is provided with a plurality of reinforcing ribs for reinforcing the structure.
In the above-mentioned large-caliber umbrella-shaped antenna unfolding mechanism, the lead screw is a ball screw, an external thread for matching with the slider is arranged on the outer side of the lead screw, and the end face of the lead screw is fixedly connected with the bevel gear set.
In the large-caliber umbrella-shaped antenna unfolding mechanism, the sliding block is of a hollow cube structure, an internal thread used for being matched with the lead screw is tapped on the inner side of the sliding block, and a flange used for being hinged to the connecting rod is arranged on the outer side of the sliding block.
In the above-mentioned large-aperture umbrella-shaped antenna deployment mechanism, one end of the connecting rod is provided with a flange for hinging, and the other end of the connecting rod is provided with an external thread for assembling a nut.
In the deployment mechanism of the large-aperture umbrella-shaped antenna, the rib assembly includes a hinge, a rib plate, and a stopper; the rib plate adopts a solid rectangular plate-shaped structure, and a large-caliber umbrella-shaped antenna is arranged on the rib plate; one end of the ribbed plate is hinged with the support through a hinge, and the other end of the ribbed plate is hinged with the connecting rod through a hinge; the hinged position of the rib plate and the support is provided with a stop block for locking the antenna in place when the antenna is unfolded, and the stop block is provided with a pin hole for matching with a stop pin.
In the above-mentioned large-aperture umbrella-shaped antenna deployment mechanism, the spring is a coil spring.
In the above-mentioned large-aperture umbrella-shaped antenna deployment mechanism, the stop pin is a cylindrical pin or a conical pin.
Compared with the prior art, the invention has the beneficial effects that:
【1】 The invention effectively solves the problems of unfolding and folding of the large-caliber umbrella-shaped antenna by utilizing the bevel gear group, so that the antenna ribs are synchronously unfolded, safe and reliable, and can bear larger moment.
【2】 The driver of the invention has large output torque, large reduction ratio, small volume and light weight, and realizes the real-time monitoring of the rotating speed of the motor by installing the rotary transformer.
【3】 According to the invention, through the matching of the connecting rod, the lead screw and the sliding block, the antenna rib is unfolded under a large span, and the weight of the whole unfolding mechanism is greatly reduced.
【4】 The invention has compact integral structure, relatively long service life, wide application range and good market application prospect, is suitable for various working environments, and can still well run under complex working conditions.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic view of the invention in a closed state
FIG. 2 is a schematic view of the present invention in an expanded state
FIG. 3 is a schematic structural diagram of the present invention
FIG. 4 is a structural view of a connecting rod of the present invention
Wherein: 1, a driver; 2 a bevel gear set; 3, a support; 4, a lead screw; 5, a sliding block; 6, connecting rods; 7 a rib assembly; 8, a spring; 9, a stop pin; 10 a microswitch; 11, a motor; 12 a rotary transformer; 13 a reducer; 21 a first bevel gear; 22 a second bevel gear; 71 a hinge; 72 ribs; 73, a stop block;
Detailed Description
In order that the manner in which the invention is worked will become more apparent, the invention will be further described with reference to the following description and specific examples taken in conjunction with the accompanying drawings in which:
as shown in fig. 1 to 4, a large-caliber umbrella-shaped antenna unfolding mechanism comprises a driver 1, a bevel gear set 2, a support 3, a screw rod 4, a slider 5, a connecting rod 6, a rib assembly 7, a spring 8 and a stop pin 9; the support 3 is of a hollow cylinder structure, one end of the support 3 is provided with a driver 1 for providing power, the inner side of the support 3 is provided with a plurality of lead screws 4 for transmitting power, the driver 1 is connected with the lead screws 4 through a bevel gear set 2, and the lead screws 4 are provided with slide blocks 5 which only translate along the axial directions of the lead screws 4; the other end of the support 3 is provided with a rib component 7 used for assembling an antenna, the rib component 7 is hinged with the sliding block 5 through a connecting rod 6, and the outer side of the support 3 is provided with a stop pin 9 used for locking the rib component 7 through a spring 8 in a pressing mode.
Preferably, the drive 1 comprises a motor 11, a resolver 12 and a reducer 13; the motor 11 adopts a brushless torque motor, and the reducer 13 adopts a harmonic gear reducer; a resolver 12 is connected in series between the motor 11 and the reduction gear 13.
Preferably, the bevel gear set 2 comprises a first bevel gear 21 and a second bevel gear 22; the first bevel gear 21 is connected with the driver 1 and meshed with a plurality of second bevel gears 22; the second bevel gear 22 is connected to the lead screw 4.
Preferably, the side wall of the support 3 is provided with a plurality of through holes for penetrating the connecting rod 6, and the inner side of the support 3 is provided with a plurality of reinforcing ribs for reinforcing the structure.
Preferably, lead screw 4 adopts ball, and 4 outsides of lead screw are equipped with the external screw thread that is used for cooperating slider 5, 4 terminal surfaces of lead screw and bevel gear set 2 fixed connection.
Preferably, the sliding block 5 is of a hollow cubic structure, an internal thread for matching the screw rod 4 is tapped on the inner side of the sliding block 5, and a flange for hinging the connecting rod 6 is arranged on the outer side of the sliding block 5.
Preferably, one end of the connecting rod 6 is provided with a flange for hinging, and the other end of the connecting rod 6 is provided with an external thread for fitting a nut.
Preferably, the rib assembly 7 comprises a hinge 71, a rib 72 and a stop 73; the ribbed plate 72 adopts a solid rectangular plate-shaped structure, and a large-caliber umbrella-shaped antenna is arranged on the ribbed plate 72; one end of the ribbed plate 72 is hinged with the support 3 through a hinge 71, and the other end of the ribbed plate 72 is hinged with the connecting rod 6 through the hinge 71; the hinged part of the rib plate 72 and the support 3 is provided with a stop 73 for locking the antenna in place when the antenna is unfolded, and the stop 73 is provided with a pin hole for matching with the stop pin 9.
Preferably, the spring 8 is a coil spring.
Preferably, the stop pin 9 is a cylindrical pin or a conical pin.
Preferably, a rib 72 is associated with a screw 4 and a slider 5.
Preferably, the number of the first bevel gears 21 is set to be one, the number of the second bevel gears 22 is set to be nine, and the nine second bevel gears 22 are uniformly distributed along the circumferential direction of the support 3.
Preferably, the large-caliber umbrella-shaped antenna unfolding mechanism further comprises a microswitch 10, and the microswitch 10 is installed in the support 3 and used for transmitting an antenna unfolding in-place signal.
The working principle of the invention is as follows:
starting the driver 1, driving the screw rod 4 to rotate through the bevel gear set 2, driving the sliding block 5 to translate, further pushing the connecting rod 6 to move, and synchronously unfolding the ribbed plates 72; when the ribbed plates 72 are unfolded in place, the ribbed plates 72 are locked by the aid of the stop blocks 73, and the spring 8 pushes the stop pins 9 to enter the stop blocks 73, so that synchronous unfolding and locking of the ribbed plates 72 can be realized, and synchronous unfolding and locking of the large-caliber umbrella-shaped antenna can be realized.
Those skilled in the art will appreciate that the details not described in the present specification are well known.
Claims (4)
1. The utility model provides an umbrella-shaped antenna deployment mechanism of heavy-calibre which characterized in that: the bevel gear mechanism comprises a driver (1), a bevel gear group (2), a support (3), a screw rod (4), a sliding block (5), a connecting rod (6), a rib component (7), a spring (8) and a stop pin (9); the support (3) adopts a hollow cylinder structure, a driver (1) for providing power is installed in the support (3), a plurality of lead screws (4) for transmitting power are arranged on the inner side of the support (3), the driver (1) is connected with the lead screws (4) through a bevel gear set (2), and a sliding block (5) which only translates along the axial direction of the lead screws (4) is installed on the lead screws (4); a rib component (7) used for assembling an antenna is installed at one end of the support (3), the rib component (7) is hinged with the sliding block (5) through a connecting rod (6), and a stop pin (9) used for locking the rib component (7) is installed on the outer side of the support (3) in a pressing mode through a spring (8);
the bevel gear set (2) comprises a first bevel gear (21) and a second bevel gear (22); the first bevel gear (21) is connected with the driver (1) and meshed with a plurality of second bevel gears (22); the second bevel gear (22) is connected with the screw rod (4);
the side wall of the support (3) is provided with a plurality of through holes for penetrating the connecting rod (6), and the inner side of the support (3) is provided with a plurality of reinforcing ribs for reinforcing the structure;
the lead screw (4) adopts a ball lead screw, the outer side of the lead screw (4) is provided with an external thread used for matching with the sliding block (5), and the end surface of the lead screw (4) is fixedly connected with the bevel gear set (2);
the sliding block (5) is of a hollow cubic structure, an internal thread used for being matched with the lead screw (4) is tapped on the inner side of the sliding block (5), and a flange used for being hinged with the connecting rod (6) is arranged on the outer side of the sliding block (5);
one end of the connecting rod (6) is provided with a flange for hinging, and the other end of the connecting rod (6) is provided with an external thread for assembling a nut;
the rib assembly (7) comprises a hinge (71), a rib plate (72) and a stop block (73); the rib plate (72) adopts a solid rectangular plate-shaped structure, and a large-caliber umbrella-shaped antenna is arranged on the rib plate (72); one end of the ribbed plate (72) is hinged with the support (3) through a hinge (71), and the other end of the ribbed plate (72) is hinged with the connecting rod (6) through the hinge (71); a stop block (73) used for locking the antenna in place when the antenna is unfolded is arranged at the hinged position of the rib plate (72) and the support (3), and a pin hole used for being matched with the stop pin (9) is formed in the stop block (73).
2. The deployment mechanism of a large-aperture umbrella antenna of claim 1, wherein: the driver (1) comprises a motor (11), a rotary transformer (12) and a speed reducer (13); the motor (11) adopts a brushless torque motor, and the reducer (13) adopts a harmonic gear reducer; a rotary transformer (12) is connected in series between the motor (11) and the speed reducer (13).
3. The deployment mechanism of a large-aperture umbrella antenna of claim 1, wherein: the spring (8) is a spiral spring.
4. The deployment mechanism of a large-aperture umbrella antenna of claim 1, wherein: the stop pin (9) adopts a cylindrical pin or a conical pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810169146.7A CN108183307B (en) | 2018-02-28 | 2018-02-28 | Large-diameter umbrella-shaped antenna unfolding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810169146.7A CN108183307B (en) | 2018-02-28 | 2018-02-28 | Large-diameter umbrella-shaped antenna unfolding mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108183307A CN108183307A (en) | 2018-06-19 |
| CN108183307B true CN108183307B (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810169146.7A Active CN108183307B (en) | 2018-02-28 | 2018-02-28 | Large-diameter umbrella-shaped antenna unfolding mechanism |
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| CN (1) | CN108183307B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504521B (en) * | 2019-08-14 | 2021-06-11 | 西安空间无线电技术研究所 | Unfolding mechanism for high-precision umbrella-shaped antenna |
| CN113381161B (en) * | 2021-05-24 | 2022-08-23 | 西安电子科技大学 | Single-folding umbrella antenna unfolding mechanism capable of being unfolded and folded repeatedly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5264863A (en) * | 1993-01-29 | 1993-11-23 | The United States Of America As Represented By The Secretary Of The Air Force | Mobile cylindrical antenna |
| US7385147B2 (en) * | 2002-03-13 | 2008-06-10 | Pioneer Energy Products, Llc | Articulated mast |
| CN103872422A (en) * | 2014-03-24 | 2014-06-18 | 上海交通大学 | Umbrella-shaped unfoldable antenna system |
| CN108401568B (en) * | 2012-08-24 | 2015-01-21 | 西安空间无线电技术研究所 | A kind of umbrella antenna locking releasing device and its dynamometry scaling method for locking load |
| CN104617369A (en) * | 2014-11-27 | 2015-05-13 | 西安空间无线电技术研究所 | Novel rib unfolding mechanism of high precision umbrella type antenna |
| WO2017151689A1 (en) * | 2016-02-29 | 2017-09-08 | L'garde, Inc. | Compactable rf membrane antenna |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205053449U (en) * | 2015-10-19 | 2016-03-02 | 长安大学 | Deployable or pack up bear device |
| CN106785480B (en) * | 2016-11-14 | 2019-08-23 | 上海宇航系统工程研究所 | A kind of radial direction ribbed reflecting surface unfolding mechanism |
-
2018
- 2018-02-28 CN CN201810169146.7A patent/CN108183307B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5264863A (en) * | 1993-01-29 | 1993-11-23 | The United States Of America As Represented By The Secretary Of The Air Force | Mobile cylindrical antenna |
| US7385147B2 (en) * | 2002-03-13 | 2008-06-10 | Pioneer Energy Products, Llc | Articulated mast |
| CN108401568B (en) * | 2012-08-24 | 2015-01-21 | 西安空间无线电技术研究所 | A kind of umbrella antenna locking releasing device and its dynamometry scaling method for locking load |
| CN103872422A (en) * | 2014-03-24 | 2014-06-18 | 上海交通大学 | Umbrella-shaped unfoldable antenna system |
| CN104617369A (en) * | 2014-11-27 | 2015-05-13 | 西安空间无线电技术研究所 | Novel rib unfolding mechanism of high precision umbrella type antenna |
| WO2017151689A1 (en) * | 2016-02-29 | 2017-09-08 | L'garde, Inc. | Compactable rf membrane antenna |
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| Publication number | Publication date |
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| CN108183307A (en) | 2018-06-19 |
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