CN110667823A - Two-way automatic folding device - Google Patents
Two-way automatic folding device Download PDFInfo
- Publication number
- CN110667823A CN110667823A CN201910960122.8A CN201910960122A CN110667823A CN 110667823 A CN110667823 A CN 110667823A CN 201910960122 A CN201910960122 A CN 201910960122A CN 110667823 A CN110667823 A CN 110667823A
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- bevel gear
- reducing motor
- shaft
- teeth
- automatic folding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/38—Adjustment of complete wings or parts thereof
- B64C3/56—Folding or collapsing to reduce overall dimensions of aircraft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U30/00—Means for producing lift; Empennages; Arrangements thereof
- B64U30/10—Wings
- B64U30/12—Variable or detachable wings, e.g. wings with adjustable sweep
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
The utility model provides a two-way automatic folding device, the device includes mounting panel (1), first gear motor (2), first gear motor seat (3), shaft coupling (4), linear guide (5), slip table (6), second gear motor (7), second gear motor seat (8), first bevel gear (9), second bevel gear (10), driving shaft (11), left bearing frame (12), right bearing frame (13), centre wheel (14), planet carrier (15), driven shaft (16), planet wheel (17), third bevel gear (18), fourth bevel gear (19) and round pin axle (20). The device utilizes three power sources to realize the automatic folding and unfolding of the device, and the device ensures the synchronization and the symmetry of the movement of the folded objects on the left side and the right side by using a speed reducing motor with left and right bidirectional output and a special structure of linear guide rails with opposite rotation directions on the two sides.
Description
Technical Field
The invention relates to a folding device, in particular to a bidirectional automatic folding device, and belongs to the technical field of mechanical engineering.
Background
Along with the development of science and technology, the application of automatic folding device in daily production and life is increasing gradually, brings a lot of facilities to certain extent for people's work and life. Most folding devices in the market are one-way automatic folding devices, the two-way automatic folding devices are relatively few, the application is complex in some occasions, the convenience and the speed are not high enough, and the working efficiency of the process is greatly reduced. For example, in the application of the automatic folding wing of the unmanned aerial vehicle, the aileron needs to be folded towards the side of the body; some two-sided devices require a synchronous rotary folding device. Therefore, it is necessary to design a bidirectional automatic folding device to solve the above problems.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides a bidirectional automatic folding device, which can realize bidirectional automatic folding of a folding object.
The invention discloses a bidirectional automatic folding device which comprises a mounting plate 1, a first speed reducing motor 2, a first speed reducing motor base 3, a coupler 4, a linear guide rail 5, a sliding table 6, a second speed reducing motor 7, a second speed reducing motor base 8, a first bevel gear 9, a second bevel gear 10, a driving shaft 11, a left bearing base 12, a right bearing base 13, a central wheel 14, a planet carrier 15, a driven shaft 16, a planet wheel 17, a third bevel gear 18, a fourth bevel gear 19 and a pin shaft 20.
The entire apparatus is generally symmetrical to the left and right along the axis of the first reduction motor 2, and here, the bidirectional automatic folding apparatus will be described by taking the automatic folding apparatus for right-folding the object 21 as an example.
The mounting plate 1, the first speed reduction motor 2, the first speed reduction motor base 3, the coupler 4 and the linear guide rail 5 form a separating mechanism. The sliding table 6, the second speed reducing motor 7, the second speed reducing motor base 8, the first bevel gear 9, the second bevel gear 10, the driving shaft 11, the left bearing seat 12, the right bearing seat 13, the central gear 14, the planet carrier 15, the driven shaft 16, the planet gear 17, the third bevel gear 18, the fourth bevel gear 19 and the pin shaft 20 form a folding mechanism.
The mounting plate 1 is the base of the whole bidirectional automatic folding device. The first speed reducing motor 2 and the mounting plate 1 are fixedly mounted in the middle of the mounting plate 1 through the first speed reducing motor base 3 in a threaded connection mode, a speed reducer of the first speed reducing motor 2 is used for outputting left-right double-shaft synchronous rotation, a right output shaft of the speed reducer is connected with an automatic folding device part of a right folding object 21, and a left output shaft of the speed reducer is connected with an automatic folding device part of a left folding object 22. The output shaft of the first speed reducing motor 2 is connected with the lead screw of the linear guide rail 5 through the coupler 4 and ensures synchronous rotation, the linear guide rail 5 is fixedly installed on the installation plate 1, and the sliding table 6 is fixed on the sliding block of the linear guide rail 5 through threaded connection. The automatic folding device for the right folding object 21 and the automatic folding device for the left folding object 22 are bilaterally symmetrical, but the screw-nut pairs of the linear guide 5 are oppositely rotated. The left and right output shafts of the reducer of the first speed reducing motor 2 synchronously rotate, and the screw nut pairs of the linear guide rails 5 on the left and right sides rotate in opposite directions, so that the sliding tables 6 on the left and right sides generate opposite or opposite linear motions, and the separation or combination of folding objects is realized.
The sliding table 6 is a frame part of the folding mechanism, the second speed reducing motor 7 is perpendicular to the axis direction of the first speed reducing motor 2 and is fixedly installed on the sliding table 6 through a second speed reducing motor base 8, the first bevel gear 9 is fixedly installed on an output shaft of the second speed reducing motor 7, the second bevel gear 10 is fixedly installed on a driving shaft 11, and the driving shaft 11 and the output shaft of the first speed reducing motor 2 are in the same direction. Two sides of the driving shaft 11 are fixedly arranged on the sliding table 6 through a left bearing seat 12 and a right bearing seat 13. The planet carrier 15 is fixedly mounted on the drive shaft 11. The central wheel 14 is an incomplete gear, the lower part of the central wheel 14 is a mounting seat, the central wheel is fixedly mounted on the sliding table 6 through the mounting seat, and the driving shaft 11 penetrates through an inner hole of the central wheel 14. The left end of the driven shaft 16 is fixedly arranged with the planet wheel 17, and the right end of the driven shaft 16 is fixedly arranged with the third bevel gear 18. The driven shaft 16 is arranged at the end of the planetary carrier 15 in parallel with the driving shaft 11. The centre wheel 14, the planet carrier 15 and the planet wheels 17 constitute an epicyclic gear train. The fourth bevel gear 19 is fixedly installed on a pin shaft 20, and the pin shaft 20 is perpendicular to the axis of the driving shaft 11. The connecting block on the right folding object 21 is fixedly connected with the pin shaft 20 to ensure synchronous rotation. The planet carrier 15 is connected with the pin shaft 20 in a clearance fit manner. The driving shaft 11 and the pin shaft 20 rotate at the same speed.
The folding movement of the folding object of the bidirectional automatic folding device needs strict transmission ratio calculation, so that the right folding object 21 and the left folding object 22 move synchronously and are completely folded, and the conversion between the working state and the folding state is realized.
n2The rotational speed, n, of the drive shaft 113The rotational speed of the center wheel 14, n4Is the rotational speed, n, of the planet wheel 175Is the rotational speed, n, of the third bevel gear 186The rotational speed, n, of the fourth bevel gear 19HThe rotational speed of the carrier 15. z is a radical of1Number of teeth, z, of the first bevel gear 92The number of teeth of the second bevel gear 10, z3Number of teeth of the sun gear 14, z4Number of teeth, z, of the planet wheel 175Is the number of teeth of the third bevel gear 18, z6Is as followsThe number of teeth of the four bevel gears 19.
The transmission ratio of the central wheel 14 and the planet wheels 17 relative to the planet carrier 15, i56The gear ratio of the third bevel gear 18 and the fourth bevel gear 19.
The bidirectional automatic folding device of the invention needs the same rotating speed of the driving shaft 11 and the pin shaft 20 when working. I.e. n2＝n6. An epicyclic gear train consists of a central wheel 14, a planet carrier 15 and a planet wheel 17, and the calculation formula of the epicyclic gear train is
In the formula
The rotational speeds of the input shaft 11 and the planet carrier 15 are the same, i.e. n2＝nH；
The centre wheel 14 being stationary, i.e. n3＝0。
Calculating the formula (1):
the third bevel gear 18 and the fourth bevel gear 19 form an ordinary gear train, and the calculation formula of the ordinary gear train is as follows
In the formula
Since the planet gears 17 and the third bevel gear 18 rotate at the same speed, i.e. n4＝n5。
Calculating the formula (2):
the tooth number relation among the gears is obtained according to the formula (1) and the formula (2):
z6×z4-z5×(z3+z4)＝0 (3)
number of teeth of the sun gear 14z3Number of teeth z of planet wheel 174The number z of teeth of the third bevel gear 185And the number z of teeth of the fourth bevel gear 196The formula (3) must be satisfied to ensure that the rotation speeds of the driving shaft 11 and the pin shaft 20 are the same.
The beneficial technical effects of the invention are as follows: the automatic folding and unfolding of the bidirectional automatic folding device are realized by utilizing three power sources, and the bidirectional automatic folding device ensures the synchronization and symmetry of the movement of the folded objects on the left side and the right side by using a speed reducing motor with left and right bidirectional output and a special structure of linear guide rails with opposite rotation directions on two sides.
Drawings
FIG. 1 is a top view of the operating state of a bi-directional automatic folding apparatus of the present invention;
FIG. 2 is a top view of the bi-directional automatic folding device of the present invention in a separated state;
FIG. 3 is a top view of a folded state of the bi-directional automatic folding device of the present invention;
FIG. 4 is a left side view of a folded state of the bi-directional automatic folding device of the present invention;
FIG. 5 is a partial front view of a bi-directional automatic folding device of the present invention;
fig. 6 is a view a-a of a bi-directional automatic folding device of the present invention.
Detailed Description
The contents and operation of the present invention will be described with reference to fig. 1-6.
The invention discloses a bidirectional automatic folding device which comprises a mounting plate 1, a first speed reducing motor 2, a first speed reducing motor base 3, a coupler 4, a linear guide rail 5, a sliding table 6, a second speed reducing motor 7, a second speed reducing motor base 8, a first bevel gear 9, a second bevel gear 10, a driving shaft 11, a left bearing base 12, a right bearing base 13, a central wheel 14, a planet carrier 15, a driven shaft 16, a planet wheel 17, a third bevel gear 18, a fourth bevel gear 19 and a pin shaft 20.
The entire apparatus is generally symmetrical to the left and right along the axis of the first reduction motor 2, and here, the bidirectional automatic folding apparatus will be described by taking the automatic folding apparatus for right-folding the object 21 as an example.
The mounting plate 1, the first speed reduction motor 2, the first speed reduction motor base 3, the coupler 4 and the linear guide rail 5 form a separating mechanism. The sliding table 6, the second speed reducing motor 7, the second speed reducing motor base 8, the first bevel gear 9, the second bevel gear 10, the driving shaft 11, the left bearing seat 12, the right bearing seat 13, the central gear 14, the planet carrier 15, the driven shaft 16, the planet gear 17, the third bevel gear 18, the fourth bevel gear 19 and the pin shaft 20 form a folding mechanism.
The mounting plate 1 is the base of the whole bidirectional automatic folding device. The first speed reducing motor 2 and the mounting plate 1 are fixedly mounted in the middle of the mounting plate 1 through the first speed reducing motor base 3 in a threaded connection mode, a speed reducer of the first speed reducing motor 2 is used for outputting left-right double-shaft synchronous rotation, a right output shaft of the speed reducer is connected with an automatic folding device part of a right folding object 21, and a left output shaft of the speed reducer is connected with an automatic folding device part of a left folding object 22. The output shaft of the first speed reducing motor 2 is connected with the lead screw of the linear guide rail 5 through the coupler 4 and ensures synchronous rotation, the linear guide rail 5 is fixedly installed on the installation plate 1, and the sliding table 6 is fixed on the sliding block of the linear guide rail 5 through threaded connection. The automatic folding device for the right folding object 21 and the automatic folding device for the left folding object 22 are bilaterally symmetrical, but the screw-nut pairs of the linear guide 5 are oppositely rotated. The left and right output shafts of the reducer of the first speed reducing motor 2 synchronously rotate, and the screw nut pairs of the linear guide rails 5 on the left and right sides rotate in opposite directions, so that the sliding tables 6 on the left and right sides generate opposite or opposite linear motions, and the separation or combination of folding objects is realized.
The sliding table 6 is a frame part of the folding mechanism, the second speed reducing motor 7 is perpendicular to the axis direction of the first speed reducing motor 2 and is fixedly installed on the sliding table 6 through a second speed reducing motor base 8, the first bevel gear 9 is fixedly installed on an output shaft of the second speed reducing motor 7, the second bevel gear 10 is fixedly installed on a driving shaft 11, and the driving shaft 11 and the output shaft of the first speed reducing motor 2 are in the same direction. Two sides of the driving shaft 11 are fixedly arranged on the sliding table 6 through a left bearing seat 12 and a right bearing seat 13. The planet carrier 15 is fixedly mounted on the drive shaft 11. The central wheel 14 is an incomplete gear, the lower part of the central wheel 14 is a mounting seat, the central wheel is fixedly mounted on the sliding table 6 through the mounting seat, and the driving shaft 11 penetrates through an inner hole of the central wheel 14. The left end of the driven shaft 16 is fixedly arranged with the planet wheel 17, and the right end of the driven shaft 16 is fixedly arranged with the third bevel gear 18. The driven shaft 16 is arranged at the end of the planetary carrier 15 in parallel with the driving shaft 11. The centre wheel 14, the planet carrier 15 and the planet wheels 17 constitute an epicyclic gear train. The fourth bevel gear 19 is fixedly installed on a pin shaft 20, and the pin shaft 20 is perpendicular to the axis of the driving shaft 11. The connecting block on the right folding object 21 is fixedly connected with the pin shaft 20 to ensure synchronous rotation. The planet carrier 15 is connected with the pin shaft 20 in a clearance fit manner. The driving shaft 11 and the pin shaft 20 rotate at the same speed.
The best transmission scheme of the embodiment is as follows: the central gear 14 and the planet gear 17 are respectively provided with a straight gear with a modulus of 0.5mm and a tooth number of 24 teeth, the third bevel gear 18 is provided with a bevel gear with a modulus of 0.5mm and a tooth number of 20 teeth, and the fourth bevel gear 19 is provided with a bevel gear with a modulus of 0.5mm and a tooth number of 40 teeth. The first reduction motor 2 and the second reduction motor 7 are servo motors.
The operation modes of the bidirectional automatic folding device of the invention are divided into two types, namely folding operation and unfolding operation, which are respectively explained below.
The specific working process of the folding operation of the bidirectional automatic folding device is as follows:
(1) the folding object is separated from the first speed reduction double-output-shaft motor 2 to start, the linear guide rail 5 drives the screw rod on the linear guide rail 5 to rotate through coupling, the linear guide rail 5 drives the sliding table 6 to move, at the moment, the left folding object 22 and the right folding object 21 move in the direction away from the first speed reduction motor 2, and the first speed reduction motor 2 stops working after the sliding table 6 moves to a specified position.
(2) When the folding object is folded, the second speed reducing motor 7 starts to rotate and drives the first bevel gear 9 to rotate, the first bevel gear 9 drives the second bevel gear 10 to rotate through meshing transmission, so as to drive the driving shaft 11 and the planet carrier 15 to rotate, since the planetary carrier 15, the drive shaft 11, the planetary gears 17 and the center gear 14 constitute an epicyclic gear train, the drive shaft 11 rotates while the planetary gears 17 revolve around the center gear 14, thereby driving the third bevel gear 18 to rotate, the third bevel gear 18 drives the fourth bevel gear 19 to rotate through meshing transmission, the fourth bevel gear 19 and the pin shaft 20 are fixed and synchronously rotate, as the pin shaft 20 is connected with the right folding object 21 through a flat key, therefore, the right folding object 21 and the pin shaft 20 rotate synchronously, the second speed reduction motor 7 stops working after rotating for a specified angle, and at the moment, the folding object is in a folding state, and the left folding object 22 and the right folding object 21 are parallel to the side edge of the mounting plate 1.
The specific working process of the unfolding operation of the bidirectional automatic folding device is as follows:
(1) the folding object unfolding second speed reducing motor 7 starts to rotate reversely and drives the first bevel gear 9 to rotate, the first bevel gear 9 drives the second bevel gear 10 to rotate through meshing transmission, so that the driving shaft 11 and the planet carrier 15 are driven to rotate, the planet carrier 15, the driving shaft 11, the planet gear 17 and the central wheel 14 form an epicyclic gear train, so that the driving shaft 11 rotates when the planet gear 17 revolves around the central wheel 14, the third bevel gear 18 rotates synchronously with the driving shaft 11, the third bevel gear 18 drives the fourth bevel gear 19 to rotate through meshing transmission, the right folding object 21 rotates synchronously with the pin shaft 20, and the second speed reducing motor 7 stops working after rotating for a specified angle.
(2) The folding object starts to rotate reversely in combination with the first reducing motor 2, the screw rod on the linear guide rail 5 is driven to rotate through coupling, the nut screw rod pair on the linear guide rail 5 drives the sliding table 6 to move, at the moment, the left folding object 22 and the right folding object 21 move towards the direction close to the first reducing motor 2, the first reducing motor 2 stops working after rotating for a specified time, and at the moment, the bidirectional automatic folding device is in a completely unfolded state.
Claims (4)
1. A bidirectional automatic folding device comprises a mounting plate (1), a first reducing motor (2), a first reducing motor base (3), a coupler (4), a linear guide rail (5), a sliding table (6), a second reducing motor (7), a second reducing motor base (8), a first bevel gear (9), a second bevel gear (10), a driving shaft (11), a left bearing base (12), a right bearing base (13), a central wheel (14), a planet carrier (15), a driven shaft (16), a planet wheel (17), a third bevel gear (18), a fourth bevel gear (19) and a pin shaft (20), and is characterized in that the device is generally bilaterally symmetrical along the axis of the first reducing motor (2), and the mounting plate (1), the first reducing motor (2), the first reducing motor base (3), the coupler (4) and the linear guide rail (5) form a separating mechanism, a folding mechanism consists of a sliding table (6), a second reducing motor (7), a second reducing motor base (8), a first bevel gear (9), a second bevel gear (10), a driving shaft (11), a left bearing seat (12), a right bearing seat (13), a central wheel (14), a planet carrier (15), a driven shaft (16), a planet wheel (17), a third bevel gear (18), a fourth bevel gear (19) and a pin shaft (20), a mounting plate (1) is a base of the whole device, a first reducing motor (2) and the mounting plate (1) are fixedly arranged in the middle of the mounting plate (1) through a first reducing motor base (3), a reducer of the first reducing motor (2) is synchronously rotated and output by a left shaft and a right shaft, a right output shaft of the reducer is connected with an automatic folding device part of a right folding object (21), and a left output shaft of the reducer is connected with an automatic folding device part of a left folding object (, the output shaft of the first reducing motor (2) is connected with the lead screw of the linear guide rail (5) through a coupler (4) and ensures synchronous rotation, the linear guide rail (5) is fixedly installed on the installation plate (1), the sliding tables (6) are fixedly installed on the sliding block of the linear guide rail (5), the automatic folding device of the right folding object (21) and the automatic folding device of the left folding object (22) are bilaterally symmetrical, but the screw nut pairs of the linear guide rails (5) on the left side and the right side are opposite in rotating direction, the left output shaft and the right output shaft of the reducer of the first reducing motor (2) synchronously rotate, because the screw nut pairs of the linear guide rails (5) on the left side and the right side are opposite in rotating direction, the sliding tables (6) on the left side and the right side generate opposite or opposite linear motion, so as to realize the separation or combination of the folding objects, the sliding tables (6) are a frame part of the folding mechanism, and the second reducing motor (7) is perpendicular to the axial direction On a platform (6), a first bevel gear (9) is fixedly arranged on an output shaft of a second speed reducing motor (7), a second bevel gear (10) is fixedly arranged on a driving shaft (11), the driving shaft (11) is in the same direction with the output shaft of the first speed reducing motor (2), two sides of the driving shaft (11) are fixedly arranged on the sliding platform (6) through a left bearing seat (12) and a right bearing seat (13), a planet carrier (15) is fixedly arranged on the driving shaft (11), a central wheel (14) is an incomplete gear, the lower part of the central wheel (14) is an installation seat and is fixedly arranged on the sliding platform (6) through the installation seat, the driving shaft (11) penetrates through an inner hole of the central wheel (14), the left end of a driven shaft (16) is fixedly arranged with a planet wheel (17), the right end of the driven shaft (16) is fixedly arranged with a third bevel gear (18), and the driven shaft (16) is arranged at the tail end, The folding mechanism is parallel to the driving shaft (11), a center wheel (14), a planet carrier (15) and a planet wheel (17) form an epicyclic gear train, a fourth bevel gear (19) is fixedly installed on a pin shaft (20), the pin shaft (20) is perpendicular to the axis of the driving shaft (11), a connecting block on a right folding object (21) is fixedly connected with the pin shaft (20) to ensure synchronous rotation, and the planet carrier (15) is in clearance fit connection with the pin shaft (20).
2. A bi-directional automatic folding device according to claim 1, characterized in that the number of teeth z of the central wheel (14)3The number of teeth z of the planet wheel (17)4The number of teeth z of the third bevel gear (18)5And the number z of teeth of the fourth bevel gear (19)6Must satisfy the relation z6×z4-z5×(z3+z4)＝0。
3. A bi-directional automatic folding device according to claim 1, characterized in that the centre wheel (14) and the planet wheel (17) each select a straight gear with a module of 0.5mm and a number of teeth of 24 teeth, the third bevel gear (18) selects a bevel gear with a module of 0.5mm and a number of teeth of 20 teeth, and the fourth bevel gear (19) selects a bevel gear with a module of 0.5mm and a number of teeth of 40 teeth.
4. A bi-directional automatic folding device according to claim 1, characterized in that the first reduction motor (2) and the second reduction motor (7) are servomotors.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910960122.8A CN110667823B (en) | 2019-10-10 | 2019-10-10 | Two-way automatic folding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910960122.8A CN110667823B (en) | 2019-10-10 | 2019-10-10 | Two-way automatic folding device |
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| CN110667823A true CN110667823A (en) | 2020-01-10 |
| CN110667823B CN110667823B (en) | 2022-09-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889806A (en) * | 2022-05-16 | 2022-08-12 | 河北科技大学 | Two-way automatic folding device |
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| CN102837820A (en) * | 2012-10-09 | 2012-12-26 | 河北科技大学 | Small-size wing-foldable unmanned aerial vehicle with Z-shaped wing layout |
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| KR101688951B1 (en) * | 2016-07-29 | 2016-12-22 | 국방과학연구소 | Wing symmetrical deploying apparatus and flight vehicle having the same |
| CN107933881A (en) * | 2017-11-15 | 2018-04-20 | 安徽工程大学 | A kind of outer wing folding and unfolding mechanism of aircraft |
| CN207523919U (en) * | 2017-11-01 | 2018-06-22 | 成都飞亚航空设备应用研究所有限公司 | There is the dual output rotary actuator being manually entered |
| CN208585375U (en) * | 2018-08-08 | 2019-03-08 | 王韵棠 | A kind of electric foldable handlebar |
| US20190248468A1 (en) * | 2018-02-09 | 2019-08-15 | Airbus Operations Gmbh | Actuation unit for actuating a foldable wing tip portion of a wing for an aircraft |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837820A (en) * | 2012-10-09 | 2012-12-26 | 河北科技大学 | Small-size wing-foldable unmanned aerial vehicle with Z-shaped wing layout |
| CN105058421A (en) * | 2015-08-26 | 2015-11-18 | 北京航空航天大学 | Compact type mechanical arm joint module integrating two degrees of freedom |
| KR101688951B1 (en) * | 2016-07-29 | 2016-12-22 | 국방과학연구소 | Wing symmetrical deploying apparatus and flight vehicle having the same |
| CN207523919U (en) * | 2017-11-01 | 2018-06-22 | 成都飞亚航空设备应用研究所有限公司 | There is the dual output rotary actuator being manually entered |
| CN107933881A (en) * | 2017-11-15 | 2018-04-20 | 安徽工程大学 | A kind of outer wing folding and unfolding mechanism of aircraft |
| US20190248468A1 (en) * | 2018-02-09 | 2019-08-15 | Airbus Operations Gmbh | Actuation unit for actuating a foldable wing tip portion of a wing for an aircraft |
| CN208585375U (en) * | 2018-08-08 | 2019-03-08 | 王韵棠 | A kind of electric foldable handlebar |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114889806A (en) * | 2022-05-16 | 2022-08-12 | 河北科技大学 | Two-way automatic folding device |
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