CN113665792B - Folding wing and locking mechanism suitable for high bearing state of folding wing - Google Patents
Folding wing and locking mechanism suitable for high bearing state of folding wing Download PDFInfo
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- CN113665792B CN113665792B CN202110921491.3A CN202110921491A CN113665792B CN 113665792 B CN113665792 B CN 113665792B CN 202110921491 A CN202110921491 A CN 202110921491A CN 113665792 B CN113665792 B CN 113665792B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 103
- 241001290198 Dicliptera Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
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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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- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The application relates to a folding wing and a locking mechanism suitable for a high bearing state of the folding wing, which comprises a sliding block in sliding connection with an inner wing, wherein a connecting rod is hinged to the sliding block, one end of the connecting rod, which is far away from the sliding block, is used for being hinged with an outer wing, and two hinge shafts of the connecting rod are parallel to each other; the sliding block is provided with a sliding block lock hole and also comprises a folding main lock pin which is in sliding connection with the inner wing, and the outer wing is positioned in a folding state; the folding state main lock pin is inserted into the lock hole of the sliding block to realize the locking of the outer wing rotation by limiting the sliding of the sliding block, the rotating rod is rotationally connected to the inner wing, one end of the rotating rod can apply acting force to the folding state main lock pin, the other end of the rotating rod interacts with the output shaft of the linear stepping motor, and the distance from the acting point of the rotating rod and the output shaft of the linear stepping motor to the rotating rod rotating shaft is larger than the distance from the acting point of the rotating rod and the folding state main lock pin to the rotating rod rotating shaft. The application has the effect of reducing the acting force applied to the pin on the thin folding wing for limiting the folding state of the folding wing.
Description
Technical Field
The application relates to the field of ultra-high-speed folding wings, in particular to a folding wing and a locking mechanism suitable for a high-bearing state of the folding wing.
Background
Wings are a main source of lift force of an aircraft, the area of the wings is increased to obtain higher lift force, but after the wing span of the aircraft is increased, the storage and transportation of the aircraft are difficult, and the difficulty can be solved by replacing the whole wings with folding wings. The folding wing folding forms can be divided into in-plane folding and out-of-plane folding, and the folding wing discussed in the application belongs to the out-of-plane folding forms.
When the aircraft is transported, stored and flown, the wings of the aircraft are in a folded state, and the wings enter an unfolded state and are locked during or after taking off. The locking mechanism of the folding wing varies with the thickness of the wing, and for thicker wings, such as fighter aircraft and civil aircraft, crank links or gear mechanisms are often used for locking.
The existing thin folding wing is folded and unfolded by a motor, a locking mechanism in a wing folding state is characterized in that a pair of aligned lock holes are formed in an axially projected overlapping part of an inner wing and an outer wing around a rotating shaft and are locked by pins, and when the motor drives the wing to be unfolded, the pins are pulled out of the lock holes in advance.
In view of the above related art, the inventor considers that when the folding wing is in the folded state, when the folding wing adopts an energy storage type driving scheme such as a spring, the outer wing receives a larger driving moment action when the folding wing is in the folded state, and the action moment arm of the pin is too small, so that the applied shearing force is very large; on one hand, the pin is easy to deform and block or even break, on the other hand, the direct pressure between the pin and the lock hole is too large, the friction resistance is increased, and the pin is pulled out in a pushing way, so that the power requirement on an unlocking motor is large, the size of the motor is increased, the size of the thin folding wing is strongly restrained, and the accommodated motor generally cannot provide enough power.
Disclosure of Invention
In order to reduce the acting force applied to pins on the thin folding wing for limiting the folding state of the folding wing, the application provides the folding wing and a locking mechanism suitable for the high bearing state of the folding wing.
In a first aspect, the present application provides a locking mechanism suitable for a high-load-bearing state of a folding wing, which adopts the following technical scheme:
the locking mechanism suitable for the high bearing state of the folding wing comprises a sliding block which is in sliding connection with the inner wing, wherein a connecting rod is hinged to the sliding block, one end of the connecting rod, which is far away from the sliding block, is used for being hinged with the outer wing, and two hinge shafts of the connecting rod are parallel to each other;
the sliding block is provided with a sliding block lock hole and also comprises a folding main lock pin which is in sliding connection with the inner wing, and the outer wing is positioned in a folding state; the folding main lock pin is inserted into the lock hole of the sliding block, and the outer wing is locked by limiting the sliding of the sliding block.
Through adopting above-mentioned technical scheme, the connecting rod slider structure transmission is applyed the preload on the outer wing, and the slider can slide in the spout of inner wing, turns into the slip of slider in the inner wing with outer wing pivoted stroke, and when the wing was in the folded condition, through folding state main lock pin locking slider, the prevention slider slides to realize the fixed to the outer wing, rationally increase the distance of lug to the pivot, increase the arm of force reduces the extrusion force of slider to folding state main lock pin, thereby reduces the required pulling force of pulling out folding state main lock pin.
Preferably, the folding type sliding block locking mechanism further comprises a switching mechanism of an outer wing folding state locking mechanism arranged on the inner wing, wherein the switching mechanism of the outer wing folding state locking mechanism comprises a linear stepping motor, and an output shaft of the linear stepping motor applies acting force for pulling out the folding state main lock pin from a sliding block locking hole to the folding state main lock pin.
By adopting the technical scheme, the linear stepping motor acts on the folding main lock pin, so that the switch mechanism of the outer wing folding locking mechanism acts on the limiting of the sliding block with respect to controlling the contact of the folding main lock pin.
Preferably, the inner wing is rotatably connected with a rotating rod, one end of the rotating rod can apply acting force to the folding state main lock pin, the other end of the rotating rod interacts with the output shaft of the linear stepping motor, and the distance from the acting point of the rotating rod and the output shaft of the linear stepping motor to the rotating rod rotating shaft is larger than the distance from the acting point of the rotating rod and the folding state main lock pin to the rotating rod rotating shaft.
By adopting the technical scheme, the actuating arm of force of the output end of the linear stepping motor is increased, the thrust requirement of the linear stepping motor is reduced, and therefore, the motor size is reduced, and the locking mechanism can be applied to the locking mechanism of the thin folding wing.
Preferably, the lock further comprises a folding state pressure spring, and the folding state pressure spring applies a force for moving towards the inside of the lock hole of the sliding block to the folding state main lock pin.
By adopting the technical scheme, the folding state pressure spring keeps the folding state main lock pin embedded in the lock hole of the sliding block stable.
Preferably, the locking mechanism of the sliding block when the outer wing is fully unfolded is further included, the locking mechanism of the sliding block when the outer wing is fully unfolded comprises an unfolded state main lock pin and a main lock pressure spring which applies acting force to the unfolded state main lock pin, and when the outer wing is in a fully unfolded state, the main lock pressure spring drives the unfolded state main lock pin to partially move into a locking hole of the sliding block.
By adopting the technical scheme, the locking mechanism of the sliding block further increases the stability of the outer wing in the fully unfolded state when the outer wing is fully unfolded.
Preferably, a rotating shaft is arranged between the outer wing and the inner wing, and the outer wing is rotationally connected with the inner wing around the rotating shaft;
the unfolding-state main lock pin is in sliding connection with the inner wing, one side, which can be inserted into one end of the lock hole of the sliding block and faces the direction of the rotating shaft, of the unfolding-state main lock pin is a smooth arc surface, one side, which faces away from the direction of the rotating shaft, of the unfolding-state main lock pin is a straight surface, and the straight surface of the unfolding-state main lock pin is in contact with the side surface of the lock hole of the sliding block to limit the sliding block to move towards the direction of the rotating shaft.
Through adopting above-mentioned technical scheme, when the outer wing is expanded and is rotated, the slider promotes the motion of expansion state main lock pin through the smooth circular arc face of expansion state main lock pin, and when the outer wing was expanded completely, main lock pressure spring drove expansion state main lock pin part and moved into the slider lockhole, and the rotation of outer wing is restricted to the straight face of expansion state main lock pin.
Preferably, the locking mechanism of the outer wing when the outer wing is fully unfolded comprises an unfolding state auxiliary lock pin, an auxiliary lock pressure spring for applying acting force to the unfolding state auxiliary lock pin and an outer wing lock hole formed in the outer wing, and when the outer wing is in a fully unfolded state, the auxiliary lock pressure spring drives the unfolding state auxiliary lock pin to partially move into the outer wing lock hole.
By adopting the technical scheme, the locking mechanism of the outer wing further increases the stability of the outer wing in the fully unfolded state when the outer wing is fully unfolded.
Preferably, the auxiliary locking pin in the unfolded state is in sliding connection with the inner wing, the auxiliary locking pin in the unfolded state can be inserted into one end of the outer wing locking hole, one side of the auxiliary locking pin in the unfolded state, which faces the outward direction, is a smooth arc surface, one side of the auxiliary locking pin in the unfolded state, which faces away from the outward direction, is a straight surface, and the straight surface of the auxiliary locking pin in the unfolded state contacts with the side surface of the outer wing locking hole to limit the rotation of the outer wing.
By adopting the technical scheme, when the outer wing is unfolded and rotated, the outer wing pushes the unfolded auxiliary locking pin to move through the smooth circular arc surface of the unfolded auxiliary locking pin, and when the outer wing is completely unfolded, the auxiliary locking spring drives the unfolded auxiliary locking pin to partially move into the outer wing locking hole, and the straight surface of the unfolded auxiliary locking pin limits the rotation of the outer wing.
Preferably, the connecting rod is hinged with a limiting plate fixedly connected with the outer wing, and the limiting plate covers the sliding groove when the outer wing rotates to the unfolding state;
or the connecting rod is hinged with a limiting plate fixedly connected with the outer wing, the inner wing is fixedly provided with a chute skin, and when the outer wing rotates to an unfolding state, the limiting plate and the chute skin cover the chute.
Through adopting above-mentioned technical scheme, after the outer wing exhibition flat, the limiting plate covers the spout opening or limiting plate and spout covering jointly with the spout, guarantees the integrality of wing upper surface, does not change pneumatic appearance.
In a second aspect, the present application provides a folding wing, which adopts the following technical scheme:
the folding wing comprises an inner wing and an outer wing, wherein a locking mechanism in the scheme is arranged between the inner wing and the outer wing.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the connecting rod sliding block structure is adopted to transfer the preload applied to the outer wing, the sliding block can slide in the sliding groove of the inner wing, the rotating stroke of the outer wing is converted into the sliding of the sliding block in the inner wing, when the wing is in a folding state, the sliding block is locked through the folding state main lock pin, the sliding block is prevented from sliding, the fixing of the outer wing is realized, the distance from the lug to the rotating shaft is reasonably increased, the force arm is increased, the extrusion force of the sliding block to the folding state main lock pin is reduced, and the pulling force required by pulling out the folding state main lock pin is reduced;
2. through the lever action of the rotary rod, the action force arm of the output end of the linear stepping motor is increased, and the thrust requirement of the linear stepping motor is reduced, so that the motor size is reduced, and the locking mechanism can be applied to the locking mechanism of the thin folding wing below 30 mm;
3. the locking mechanism of the sliding block and the locking mechanism of the outer wing lock the outer wing in the unfolded state when the outer wing is completely unfolded, so that the stability of the unfolded outer wing is maintained;
4. after the outer wings are flattened, the sliding blocks slide to the limit positions, and the connecting rods are flattened and are retracted into the inner cavities of the sliding grooves; the limiting plate covers the opening of the sliding groove, and the upper part of the sliding groove, which is not swept by the connecting rod, is covered by the sliding groove skin, so that the integrity of the upper surface of the wing is ensured, and the pneumatic appearance is not changed.
Drawings
FIG. 1 is a schematic top view of a first embodiment in a folded wing deployed state;
FIG. 2 is a schematic illustration of a locked state of a folded wing in a first embodiment;
FIG. 3 is a schematic illustration of the force transfer mechanism of the link and slider of the locking mechanism of the first embodiment;
FIG. 4 is a schematic view showing a structure of a locking mechanism in a folded state of a folding wing in the first embodiment;
FIG. 5 is a schematic structural view of a locking mechanism of an outer wing of a folding wing when the outer wing is fully unfolded in the first embodiment;
FIG. 6 is a schematic view showing the movement of the locking mechanism of the slider when the outer wing of the folding wing is fully unfolded in the first embodiment;
fig. 7 is a partial schematic view of the locking mechanism when the folding wings are fully unfolded in the first embodiment.
Reference numerals illustrate: 1. an inner wing; 2. an outer wing; 3. an axis of the rotating shaft; 4. a rotating shaft; 5. a locking mechanism; 6. a link slider mechanism; 7. an outer wing folding state locking mechanism; 8. a switch mechanism of the outer wing folding state locking mechanism; 9. the locking mechanism of the sliding block when the outer wing is completely unfolded; 10. a locking mechanism for the outer wing when the outer wing is fully deployed; 11. a limiting plate; 12. a slide block; 13. a first pin; 14. a connecting rod; 15. a second pin; 16. a lug; 17. a chute; 18. a sliding block lock hole; 19. a folding main lock hole; 20. an expanded auxiliary lock hole; 21. an inner wing lock hole; 22. an outer wing lock hole; 23. a folding main lock frame; 24. a connecting bolt; 25. a linear stepper motor; 26. a screw; 27. a rotating rod; 28. a rotary rod support; 29. a pin hook; 30. a folding main lock pin; 31. a first barrel locking frame; 32. a folded state pressure spring; 33. locking a barrel; 34. a bolt; 35. an expanded auxiliary locking pin; 36. an auxiliary lock pressure spring; 37. a main lock barrel frame; 38. a bolt; 39. a main lock compression spring; 40. an unfolded state main lock pin; 41. an expanded state secondary lock region; 42. a rotating shaft bearing placement area; 43. the rotating shaft is fixedly connected with the outer wing in the mechanism placing area.
Detailed Description
The application is described in further detail below with reference to fig. 1-7.
The embodiment of the application discloses a folding wing and a locking mechanism suitable for a high bearing state of the folding wing.
Example 1
The direction of the connecting line from the left wing to the right wing of the airplane is the X-axis direction and the wingspan direction; the direction pointed by the aircraft nose, namely the direction of a connecting line from the aircraft tail to the aircraft nose or the longitudinal axis of the aircraft body is the Y-axis direction, and the direction is the aircraft body direction; the normal line of the plane of the aircraft fuselage, i.e. the vertical direction is the Z axis and is the vertical direction.
Referring to fig. 1, a slim type folding wing includes an inner wing 1 connected to a fuselage at one end in a spanwise direction, and an outer wing 2 connected to the other end of the inner wing 1 in the spanwise direction, the inner wing 1 being a fixed part of the folding wing, and the inner wing 2 being a rotatable part of the folding wing. The inner wing 1 and the outer wing 2 are rotatably connected through a rotating shaft 4, the axis of the rotating shaft 4 is along the direction of the machine body in the embodiment, and the inner wing 1 is fixedly connected with the machine body in the embodiment. The rotating shaft 4 is fixed on the outer wing 2 in the embodiment and is rotationally connected with the inner wing 1, the rotating shaft 4 is fixedly connected with the outer wing 2 through a key, the rotating shaft 4 is a cylindrical shaft, the installation is convenient, the rotating shaft 4 can be guaranteed to rotate in other embodiments, the outer wing 2 can be driven to rotate, the axial line shape of the rotating shaft 4 is a straight line, and the cross section shape of the rotating shaft 4 is not limited. In other embodiments, the rotating shaft 4 is fixed on the inner wing 1, and the rotating shaft 4 is rotatably connected with the outer wing 2. The center line of the rotating shaft 4 is the axis 3 of the rotating shaft.
Regarding the connection of the inner wing 1 to the fuselage, in another embodiment, it is sufficient to ensure that the state of the inner wing 1 is fixed relative to the state of the entire wing, and the inner wing 1 rotates relative to the fuselage.
Referring to fig. 1, a lock mechanism 5 is provided between the inner wing 1 and the outer wing 2, and the lock mechanism 5 is used to restrict relative rotation between the outer wing 2 and the inner wing 1 when acting on the outer wing 2.
Referring to fig. 2, the embodiment of the application also discloses a locking mechanism suitable for the high bearing state of the folding wing, which comprises a connecting rod sliding block mechanism 6, an outer wing folding state locking mechanism 7, a switch mechanism 8 of the outer wing folding state locking mechanism, a locking mechanism 9 of a sliding block when the outer wing is fully unfolded, and an outer wing locking mechanism 10 when the outer wing is fully unfolded.
The outer wing folded state locking mechanism 7 locks the outer wing 2 in the folded state by locking the link slider mechanism 6. The switch mechanism 8 of the outer wing folding state locking mechanism applies an urging force to the outer wing folding state locking mechanism 7, and the locking of the link slider mechanism 6 by the outer wing folding state locking mechanism 7 is released. The locking mechanism 9 of the slide block when the outer wing is fully unfolded restricts the locking of the outer wing 2 by locking the link slide mechanism 6. The outer wing locking mechanism 10 directly locks the outer wing 2 when the outer wing is fully deployed.
Referring to fig. 3, a chute 17 is formed on the surface of the inner wing 1, and the chute 17 is a chute body with a length along a direction perpendicular to the rotating shaft 4. The limiting plate 11 is fixedly arranged on the outer wing 2, and when the outer wing 2 rotates from a folded state to an unfolded state, the limiting plate 11 rotates around the rotating shaft 4 to cover the sliding groove 17. In other embodiments, the inner wing 1 has a chute skin fixed at one end of the chute 17 far away from the rotating shaft 4, and the chute skin and the limiting plate 11 jointly cover the chute slot, so that the surface of the wing is flat. In other embodiments, the angle between the length direction of the chute 17 and the rotation shaft 4 is 80 °, and the length direction of the chute 17 and the rotation shaft are not parallel to each other.
Referring to fig. 3, the link slider mechanism 6 includes a slider 12 disposed in a chute 17, the slider 12 is connected to one end of a link 14 through a first pin 13, the other end of the link 14 is connected to a lug 16 on a limiting plate 11 through a second pin 15, and the lug 16 is two parallel triangular lugs fixed on the limiting plate 11. The slide block 12 can slide along the length direction of the slide groove 17 under the limit of the slide groove 17, when the outer wing 2 rotates from the folded state to the unfolded state, the slide block 12 slides in the slide groove 17 along the direction far away from the rotating shaft 4 until the slide block 12 is locked by the locking mechanism 9 of the slide block when the outer wing is fully unfolded, and the connecting rod 14 is completely positioned in the slide groove 17.
The sliding block 12 is provided with a lock hole 18, the axis of the lock hole 18 is parallel to the axis 3 of the rotating shaft, and the inner wing 1 is provided with a folding main lock hole 19 and an unfolding auxiliary lock hole 20. When the outer wing 2 is in the folded state, the locking hole 18 on the sliding block 12 coaxially corresponds to the folding state main locking hole 19, and when the outer wing 2 is in the unfolded state, the locking hole 18 on the sliding block 12 coaxially corresponds to the unfolding state auxiliary locking hole 20 after the sliding block 12 moves.
Referring to fig. 4, the outer wing folding state locking mechanism 7 includes a first locking barrel frame 31 fixed on the inner wing 1, wherein the first locking barrel frame 31 includes a riser and a sleeve welded to each other, the first locking barrel frame 31 is provided with a folding state main locking pin 30 in a penetrating manner, and the folding state main locking pin 30 is slidably connected with the first locking barrel frame 31, and the sliding direction is along the axial direction of the folding state main locking hole 19.
The folding main lock pin 30 includes a plug post that can pass through the folding main lock hole 19, and the plug post is inserted into the lock hole 18 on the slider 12 to restrict the sliding of the slider 12. When the folding main lock pin 30 moves, the plug-in column can be driven to move and separate from the lock hole 18, and at the moment, the sliding block 12 can slide in the sliding groove 17. The folding main lock pin 30 further comprises a connecting column integrally formed with the plug-in column at one end far away from the sliding groove 17, wherein the connecting column is a column coaxial with the plug-in column, a sliding column is integrally formed on the connecting column, the sliding column is a column with the diameter smaller than that of the connecting column, the sliding column penetrates through the first barrel locking frame 31, and two ends of the sliding column are respectively located at two ends of the first barrel locking frame 31.
The outer wing folding state locking mechanism 7 further comprises a folding state pressure spring 32 sleeved on the outer side of the sliding column of the folding state main lock pin 30 and located between the first lock barrel frame 31 and the connecting column of the folding state main lock pin 30, and the folding state pressure spring 32 keeps exerting acting force on the folding state main lock pin 30, so that the connecting column of the folding state main lock pin 30 has a trend of moving towards the folding state main lock hole 19.
Referring to fig. 4, the switch mechanism 8 of the outer wing folding state locking mechanism includes a folding state main lock frame 23 fixed on the inner wing 1 by using a connecting bolt 24, the folding state main lock frame 23 is a thin plate with a flanging at one side, a linear stepping motor 25 is fixed on the folding state main lock frame 23, the linear stepping motor 25 adopts an existing motor, and the output end of the linear stepping motor 25 is a stepping screw 26. The outer wing folding state locking mechanism 8 also comprises a rotary rod support 28 fixed on the folding state main lock frame 23, a rotary rod 27 rotationally connected with the rotary rod support 28, and a pin hook 29 fixedly connected with a sliding column of the folding state main lock pin 30; one end of the rotation rod 27 is abutted against the side face of the pin hook 29, and the other end is abutted against the side face of the stepping screw 26, and the distance from the connection position of the rotation rod 27 and the pin hook 29 to the rotation rod support 28 is smaller than the distance from the connection position of the rotation rod 27 and the stepping screw 26 to the rotation rod support 28, in this embodiment, four times the distance from the connection position of the rotation rod 27 and the pin hook 29 to the rotation rod support 28 is set to be equal to the distance from the connection position of the rotation rod 27 and the stepping screw 26 to the rotation rod support 28.
When the linear stepping motor 25 rotates, the stepping screw 26 is driven to move towards the direction of the folding main lock hole 19, the stepping screw 26 pushes the rotary rod 27, the rotary rod 27 rotates anticlockwise around the rotary rod support 28, the rotary rod 27 toggles the pin hook 29 to move along the direction away from the folding main lock hole 19, and when the pin hook 29 is toggled, the folding main lock pin 30 is pulled out, so that unlocking of the outer wing folding locking mechanism 7 is realized.
In the present embodiment, the first barrel lock frame 31 is welded to the folded state main lock frame 23.
Referring to fig. 5, the locking mechanism 10 of the outer wing when the outer wing is fully unfolded includes a second barrel locking frame 33, the second barrel locking frame 33 includes a bending plate and a sleeve welded to each other, and the bending plate of the second barrel locking frame 33 is detachably connected with the inner wing 1 by a screw 34. The inner wing 2 is provided with an inner wing lock hole 21, and the inner wing lock hole 21 is a square hole.
The locking mechanism 10 of the outer wing also comprises an unfolding-state auxiliary locking pin 35 when the outer wing is fully unfolded, the unfolding-state auxiliary locking pin 35 can freely slide in the inner wing locking hole 21, the unfolding-state auxiliary locking pin 35 comprises a sliding block sliding in the inner wing locking hole 21, four side surfaces of the sliding block are contacted with four side surfaces of the inner wing locking hole 21, and the sliding block is in clearance fit with the inner wing locking hole 21; the auxiliary locking pin 35 in the unfolded state also comprises a sliding rod fixed at one end of the sliding block facing the second barrel locking frame 33, and the sliding rod penetrates through a sleeve of the second barrel locking frame 33; the unfolding-state auxiliary lock pin 35 also comprises a smooth arc surface which is arranged at one end of the sliding block, which is opposite to the sliding rod, and faces one side of the opening direction of the sliding groove 17; the auxiliary locking pin 35 in the unfolded state also comprises a limiting piece, the limiting piece is not shown in the drawing, the limiting piece is a protrusion fixedly arranged on the sliding rod, and the limiting piece limits the moving distance of the sliding block of the auxiliary locking pin 35 in the unfolded state along the direction far away from the second barrel locking frame 33, so that the smooth arc surface of the auxiliary locking pin 35 in the unfolded state stretches out of the inner wing locking hole 21, and then the auxiliary locking pin 35 in the unfolded state stops moving.
The locking mechanism 10 of the outer wing further comprises an auxiliary locking spring 36 sleeved on the sliding rod of the auxiliary locking pin 35 in the unfolded state when the outer wing is completely unfolded, two ends of the auxiliary locking spring 36 are respectively in low pressure with the sleeve of the second barrel locking frame 33 and the sliding block of the auxiliary locking pin 35 in the unfolded state, and the auxiliary locking spring 36 always applies a force towards the rotating shaft 4 to the auxiliary locking pin 35 in the unfolded state.
The outer wing 2 is provided with an outer wing lock hole 22 corresponding to the inner wing lock hole 21, and when the outer wing 2 rotates to an unfolding state in a folding state, the separating surface of the outer wing 2 pushes the unfolding state auxiliary lock pin 35 to move by applying an acting force to the smooth arc surface of the unfolding state auxiliary lock pin 35; when the outer wing 2 is fully unfolded, the outer wing lock hole 22 is aligned with the inner wing lock hole 21, the unfolded auxiliary lock pin 35 is pushed into the outer wing lock hole 22 under the action of the auxiliary lock pressure spring 36, when the unfolded auxiliary lock pin 35 is in pressing contact with the bottom surface of the outer wing lock hole 22, the auxiliary lock pressure spring 36 is still in a compressed state, and at the moment, the sliding blocks of the unfolded auxiliary lock pin 35 are simultaneously positioned in the inner wing lock hole 21 and the outer wing lock hole 22, and the unfolded auxiliary lock pin 35 is prevented from sliding off when the wing rotates by providing a pretightening force.
Referring to fig. 6, the locking mechanism 9 of the slider when the outer wing is fully extended is similar to the locking mechanism 10 of the outer wing when the outer wing is fully extended, the inner wing 1 is provided with an extended state auxiliary locking hole 20, when the outer wing 2 rotates to the extended state, the outer wing 2 drives the slider 12 to move until the slider 12 moves to the slider locking hole 18 corresponding to the extended state auxiliary locking hole 20 when the outer wing 2 is in the extended state.
The locking mechanism 9 of the slide block when the outer wing is fully unfolded comprises an unfolded state main lock pin 40, a main lock compression spring 39 sleeved on the outer side of the unfolded state main lock pin 40, and a main lock barrel frame 37 in sliding connection with the unfolded state main lock pin 40. The main lock barrel holder 37 includes a bending plate fixedly connected with the inner wing using bolts and a sleeve fixed to the bending plate. The deployed state main lock pin 40 includes integrally formed and coaxial first and second cylindrical rods, the first cylindrical rod having a larger diameter than the second cylindrical rod. The first cylindrical rod passes through the expanded state auxiliary locking hole 20, the side surface of the first cylindrical rod is in contact with the inner side surface of the expanded state auxiliary locking hole 20 and is in clearance fit, and the expanded state main locking pin 40 is provided with a smooth arc surface facing the rotating shaft 4 at one end of the first cylindrical rod, which is far away from the second cylindrical rod. The guide block is fixedly arranged on the outer side of the second cylindrical rod, the guide groove which accommodates the guide block and guides the guide block to slide along the axis direction of the sleeve is formed in the inner side of the sleeve of the main lock barrel frame 37, the guide groove penetrates through one end of the sleeve, which is far away from the first cylindrical rod, and one end, which is not penetrated through the sleeve and is close to the first cylindrical rod, is formed in the guide groove, and stops after being far away from one end of the guide groove, which faces the direction of the first cylindrical rod, the smooth arc surface of the first cylindrical rod just extends out of the unfolding-state auxiliary lock hole 20 completely, so that the smooth arc surface of the first cylindrical rod always faces the rotating shaft 4, the guide groove and the guide block are not shown in the drawing, in other embodiments, the sleeve is provided with a square tube, the second cylindrical rod is used for guaranteeing that the unfolding-state main lock pin 40 stops after sliding along a fixed track for a fixed distance.
The locking mechanism 9 of the sliding block when the outer wing is fully unfolded further comprises a main lock pressure spring 39 sleeved on the outer side of the second cylindrical rod of the unfolded state main lock pin 40, two ends of the main lock pressure spring 39 respectively abut against and press the main lock barrel frame 37 and the end face of the first cylindrical rod, and the main lock pressure spring 39 applies acting force towards the sliding groove direction to the unfolded state main lock pin 40.
When the sliding block 12 moves away from the direction of the rotating shaft 4, the expanding-state main lock pin 40 is impacted to enable the expanding-state main lock pin 40 to slide along the axis of the expanding-state auxiliary lock hole 20 and away from the sliding block 12, when the outer wing is flattened, the sliding block lock hole 18 is aligned with the inner wing lock hole 20 when the sliding block 12 moves to the limit position, the expanding-state main lock pin 40 is pushed into the sliding block lock hole 18 under the action of the main lock pressure spring 39, so that the position of the sliding block 12 is locked, and the pressure spring 39 is also in a compressed state to provide a pretightening force to prevent the pins from falling off when the wing rotates.
Referring to fig. 7, the rotary shaft 4 and the outer wing 2 of the present application are fixed together by a key, the fixing mechanism between the rotary shaft 4 and the outer wing 2 is placed in the groove 43, the rotary shaft 4 and the inner wing 1 are connected by a bearing, and the bearing mechanism is placed in the groove 42. The area on the inner wing 1 comprises an unfolding state auxiliary lock area 41, a rotating shaft bearing placing area 42 and a rotating shaft and outer wing fixing mechanism placing area 43.
The locking mechanism in the groove cavity containing scheme is arranged on the inner wing 1, and the cover plate is fixedly arranged on the inner wing 1 to cover the groove cavity containing the locking mechanism, so that the surface smoothness of the wing is ensured. In the embodiment, the parts of the locking mechanism are fixed on the inner wing 1 through screws, so that the processing requirement on the inner wing 1 is reduced, the installation and the part replacement are facilitated, and in other embodiments, the compression spring in the scheme can be replaced by using an extension spring.
The implementation principle of the locking mechanism suitable for the high bearing state of the folding wing provided by the embodiment of the application is as follows:
when the outer wing 2 is in a folded state, the folding state pressure spring 32 applies acting force to the folding state main lock pin 30, and keeps the folding state main lock pin 30 to be partially positioned in the folding state main lock hole 19 and partially positioned in the sliding block lock hole 18, so that the locking of the outer wing folding state locking mechanism 7 to the sliding block 12 is realized;
when the outer wing 2 needs to be unfolded, the screw 26 of the linear stepping motor 25 moves to be abutted against the rotary rod 27 and drives the rotary rod 27 to rotate, the rotary rod 27 drives the pin hook 29 to move away from the sliding block 12, and the pin hook 29 drives the folding main lock pin 30 to move to be separated from the sliding block locking hole 18;
the driving mechanism of the outer wing 2 drives the outer wing 2 to rotate around the rotating shaft 4, and the rotation of the outer wing 2 applies acting force to the sliding block 12 through the connecting rod 14, so that the sliding block 12 slides in the sliding groove 17 until the outer wing 2 is in a fully unfolded state.
In the unfolding process of the outer wing 2, the outer wing 2 pushes the unfolding auxiliary locking pin 35 to move along the direction away from the rotating shaft 4 by abutting and pressing the unfolding auxiliary locking pin 35; the sliding block 12 presses the unfolded state main lock pin 40 in a pushing manner to push the unfolded state main lock pin 40 to move along the direction away from the sliding groove 17;
when the outer wing 2 is in the fully unfolded state, the auxiliary lock spring 36 pushes the unfolded state auxiliary lock pin 35 to move partially into the outer wing lock hole 22, and the main lock spring 39 pushes the unfolded state main lock pin 40 to move partially into the slider lock hole 18.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (7)
1. The utility model provides a locking mechanical system suitable for folding wing high bearing state which characterized in that: the sliding block (12) is in sliding connection with the inner wing (1), a connecting rod (14) is hinged to the sliding block (12), one end, far away from the sliding block (12), of the connecting rod (14) is used for being hinged to the outer wing (2), and two hinge shafts of the connecting rod (14) are parallel to each other;
the sliding block (12) is provided with a sliding block lock hole (18) and also comprises a folding main lock pin (30) which is in sliding connection with the inner wing (1); when the outer wing (2) is in a folding state, the folding state main lock pin (30) is inserted into the sliding block lock hole (18) to realize the locking of the rotation of the outer wing (2) by limiting the sliding of the sliding block (12);
the locking mechanism (9) of the sliding block when the outer wing is fully unfolded is further included, and the locking mechanism (9) of the sliding block when the outer wing is fully unfolded comprises an unfolded main lock pin (40) and a main lock pressure spring (39) which applies acting force to the unfolded main lock pin (40); when the outer wing (2) is in a fully unfolded state, the main lock pressure spring (39) drives the unfolded main lock pin (40) to partially move into the sliding block lock hole (18);
the folding mechanism further comprises a switch mechanism (8) of an outer wing folding state locking mechanism arranged on the inner wing (1), and the switch mechanism (8) of the outer wing folding state locking mechanism comprises a linear stepping motor (25);
the folding type main lock pin (30) is characterized by further comprising a rotating rod (27) which is rotationally connected with the inner wing (1), wherein one end of the rotating rod (27) can apply acting force to the folding type main lock pin (30), the other end of the rotating rod interacts with an output shaft of the linear stepping motor (25), and the distance from an acting point of the rotating rod (27) and the output shaft of the linear stepping motor (25) to a rotating shaft of the rotating rod (27) is larger than the distance from the acting point of the rotating rod (27) and the folding type main lock pin (30) to the rotating shaft of the rotating rod (27).
2. A locking mechanism adapted for a high load carrying condition of a folding wing as claimed in claim 1, wherein: the lock further comprises a folding state pressure spring (32), and the folding state pressure spring (32) applies a force for moving towards the inside of the lock hole (18) of the sliding block to the folding state main lock pin (30).
3. A locking mechanism adapted for a high load carrying condition of a folding wing as claimed in claim 1, wherein: a rotating shaft (4) is arranged between the outer wing (2) and the inner wing (1), and the outer wing (2) is rotationally connected with the inner wing (1) around the rotating shaft (4);
the unfolding state main lock pin (40) is in sliding connection with the inner wing (1), the unfolding state main lock pin (40) can be inserted into one end of the sliding block lock hole (18), one side facing the direction of the rotating shaft (4) is a smooth arc surface, one side facing away from the direction of the rotating shaft (4) is a straight surface, and the straight surface of the unfolding state main lock pin (40) is in contact with the side surface of the sliding block lock hole (18) to limit the sliding block (12) to move towards the direction of the rotating shaft (4).
4. A locking mechanism for a high load carrying condition of a folding wing according to any one of claims 1 to 3, wherein: the outer wing locking mechanism (10) is characterized by further comprising an outer wing locking mechanism (10) when the outer wing is fully unfolded, wherein the outer wing locking mechanism (10) comprises an unfolded state auxiliary locking pin (35), an auxiliary locking pressure spring (36) for applying acting force to the unfolded state auxiliary locking pin (35) and an outer wing locking hole (22) formed in the outer wing (2), and when the outer wing (2) is in a fully unfolded state, the auxiliary locking pressure spring (36) drives the unfolded state auxiliary locking pin (35) to partially move into the outer wing locking hole (22).
5. A locking mechanism for a high load carrying fold wing according to claim 4, wherein: the auxiliary locking pin (35) in the unfolded state is in sliding connection with the inner wing (1), the auxiliary locking pin (35) in the unfolded state can be inserted into one end of the outer wing locking hole (22) and is a smooth arc surface on one side facing the direction when the auxiliary locking pin is unfolded towards the outer wing (2), and is a straight surface on one side facing the direction when the auxiliary locking pin is unfolded away from the outer wing (2), and the straight surface of the auxiliary locking pin (35) in the unfolded state is contacted with the side surface of the outer wing locking hole (22) to limit the rotation of the outer wing (2).
6. A locking mechanism according to claim 1 or 3 or 5 adapted for a high load carrying condition of a folding wing, wherein: the sliding block (12) is accommodated on the inner wing (1) to slide, a limiting plate (11) fixedly connected with the outer wing (2) is hinged on the connecting rod (14), and when the outer wing (2) rotates to a unfolding state, the limiting plate (11) covers the sliding block (17);
or the connecting rod (14) is hinged with a limiting plate (11) fixedly connected with the outer wing (2), and the sliding slot (17) cover fixedly arranged on the inner wing (1) is further included, and when the outer wing (2) rotates to an unfolding state, the limiting plate (11) and the sliding slot cover the sliding slot (17).
7. A folding wing, characterized in that: comprising an inner wing (1) and an outer wing (2), between which inner wing (1) and outer wing (2) a locking mechanism according to any one of claims 1-6 is arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110921491.3A CN113665792B (en) | 2021-08-11 | 2021-08-11 | Folding wing and locking mechanism suitable for high bearing state of folding wing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110921491.3A CN113665792B (en) | 2021-08-11 | 2021-08-11 | Folding wing and locking mechanism suitable for high bearing state of folding wing |
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| CN113665792B true CN113665792B (en) | 2023-12-05 |
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| GB635259A (en) * | 1948-01-15 | 1950-04-05 | Blackburn Aircraft Ltd | Improvements in or relating to folding wings of aircraft |
| EP0013096A1 (en) * | 1978-12-29 | 1980-07-09 | The Commonwealth Of Australia | Deployable wing mechanism |
| CN105620721A (en) * | 2016-01-30 | 2016-06-01 | 邢永安 | Small wing face folding mechanism of unmanned aerial vehicle |
| CN205686604U (en) * | 2016-06-01 | 2016-11-16 | 中电科（德阳广汉）特种飞机系统工程有限公司 | A kind of telescopic folding wings of the span |
| CN109606633A (en) * | 2018-11-22 | 2019-04-12 | 成都飞机工业（集团）有限责任公司 | A kind of single axle wingfold mechanism |
| WO2021069156A1 (en) * | 2019-10-08 | 2021-04-15 | Volare Gmbh | Aircraft and folding wing system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100051742A1 (en) * | 2008-07-22 | 2010-03-04 | Terrafugia, Inc,; | Folding Wing & Locking Mechanism |
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2021
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB635259A (en) * | 1948-01-15 | 1950-04-05 | Blackburn Aircraft Ltd | Improvements in or relating to folding wings of aircraft |
| EP0013096A1 (en) * | 1978-12-29 | 1980-07-09 | The Commonwealth Of Australia | Deployable wing mechanism |
| CN105620721A (en) * | 2016-01-30 | 2016-06-01 | 邢永安 | Small wing face folding mechanism of unmanned aerial vehicle |
| CN205686604U (en) * | 2016-06-01 | 2016-11-16 | 中电科（德阳广汉）特种飞机系统工程有限公司 | A kind of telescopic folding wings of the span |
| CN109606633A (en) * | 2018-11-22 | 2019-04-12 | 成都飞机工业（集团）有限责任公司 | A kind of single axle wingfold mechanism |
| WO2021069156A1 (en) * | 2019-10-08 | 2021-04-15 | Volare Gmbh | Aircraft and folding wing system |
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| CN113665792A (en) | 2021-11-19 |
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