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CN-121990156-A - Telescopic transverse folding wing surface and unfolding and locking mechanism

CN121990156ACN 121990156 ACN121990156 ACN 121990156ACN-121990156-A

Abstract

The invention discloses a telescopic transverse folding airfoil surface and an unfolding and locking mechanism, and relates to the technical field of aerospace. The wing surface body comprises a first wing surface and a second wing surface, the first wing surface is in running fit with the second wing surface through a torsion bar component, when the wing surface body is unfolded, the side surface of the second wing surface is flush with the side surface of the first wing surface, when the wing surface body is folded, the second wing surface is perpendicular to the first wing surface, an unfolding locking mechanism is connected with the bottom of the first wing surface at the telescopic end of the unfolding locking mechanism, and a baffle plate component is sleeved on the outer side of the telescopic end of the unfolding locking mechanism and is in contact with the bottom of the first wing surface. According to the invention, the first airfoil surface and the second airfoil surface are arranged as transverse folding airfoil surfaces, the airfoil surface body is folded towards the circumferential direction of the aircraft, the space outside the aircraft is reasonably utilized, and the appearance envelope of the airfoil surface body when the aircraft is filled is further reduced.

Inventors

  • LI ZHAOKAI
  • Duan Zunyi
  • CHENG ZHENG
  • HUANG CAN
  • CAI LIN
  • TANG XUDONG
  • DI YU
  • HAN FEI
  • ZHOU CHANGCONG
  • HU RONGCHUN

Assignees

  • 北京机械设备研究所
  • 西北工业大学

Dates

Publication Date
20260508
Application Date
20260410

Claims (10)

  1. 1. A retractable transverse fold airfoil and deployment and locking mechanism comprising: The wing surface body comprises a first wing surface (1) and a second wing surface (2), the first wing surface (1) is in running fit with the second wing surface (2) through a torsion bar assembly (3), when the wing surface body is unfolded, the side surface of the second wing surface (2) is flush with the side surface of the first wing surface (1), and when the wing surface body is folded, the second wing surface (2) is perpendicular to the first wing surface (1); The expansion locking mechanism is connected with the bottom of the first airfoil surface (1) at the telescopic end; And the baffle plate assembly (4) is sleeved on the outer side of the telescopic end of the unfolding locking mechanism and is in contact with the bottom of the first airfoil surface (1).
  2. 2. The telescopic transverse folding airfoil and unfolding and locking mechanism according to claim 1, characterized in that the unfolding and locking mechanism comprises a telescopic transmission shaft (5), a shaft sleeve (6) and an electric explosion tube (7), wherein the telescopic transmission shaft (5) is connected to the bottom of the first airfoil (1); the telescopic transmission shaft (5) comprises a first column (51), a second column (52), a third column (53) and a fourth column (54) which are sequentially and axially connected from top to bottom, and the outer diameter of the telescopic transmission shaft (5) is gradually decreased from the first column (51) to the fourth column (54); The shaft sleeve (6) comprises a first shaft cavity (61) and a second shaft cavity (62), the second column (52), the third column (53) and the fourth column (54) are located in the first shaft cavity (61), the electric explosion tube (7) is arranged in the second shaft cavity (62), a communication hole (63) is formed between the first shaft cavity (61) and the second shaft cavity (62), and axial locking components (8) for locking the shaft sleeve (6) are symmetrically arranged on the side wall of the fourth column (54).
  3. 3. The telescopic transverse folding wing surface and unfolding and locking mechanism according to claim 2, wherein an annular groove (511) is formed on the outer wall of the bottom of the first column (51) close to the second column (52), two arc limiting blocks (521) are symmetrically arranged on the outer wall of the bottom of the second column (52) close to the third column (53), two flat keys (531) are symmetrically arranged on the outer wall of the third column (53), the flat keys (531) correspond to the arc limiting blocks (521), two second mounting holes (541) are symmetrically formed on the outer wall of the fourth column (54), two groups of axial locking assemblies (8) are respectively arranged in the two second mounting holes (541), and an annular sealing groove (542) for mounting a sealing ring is formed on the outer wall of the bottom of the fourth column (54); the first shaft cavity (61) comprises an upper cavity (611) and a lower cavity (612) from top to bottom, the inner diameter of the upper cavity (611) is larger than that of the lower cavity (612), the inner diameter of the lower cavity (612) is matched with the outer diameter of the third column (53), two limiting arc rings (613) used for limiting the position of the arc limiting block (521) are symmetrically arranged on the inner wall of the top of the upper cavity (611), and two key grooves (614) matched with the flat keys (531) are symmetrically arranged on the inner wall of the lower cavity (612) close to the upper cavity (611).
  4. 4. A telescopic laterally folded airfoil and an unfolding and locking mechanism according to claim 3, characterized in that the axial locking assembly (8) comprises a first spring (81) mounted in the second mounting hole (541), and an axial pin (82) connected to the first spring (81), the inner wall of the lower chamber (612) being provided with an axial positioning hole (615) corresponding and matching to the axial pin (82).
  5. 5. A telescopic transverse folding wing surface and unfolding and locking mechanism according to claim 3, characterized in that the baffle assembly (4) comprises a bearing (41) sleeved on the outer wall of the first column (51), a clamp spring (42) installed in the annular groove (511) and located below the bearing (41), a baffle (43) sleeved on the outer side of the bearing (41) and contacted with the bottom of the bearing, and two fixing blocks (44) located on the top of the baffle (43) and respectively clamped with two sides of the top of the bearing (41), wherein the fixing blocks (44) are connected with the baffle (43) through screws (45), and the top of the fixing blocks (44) is contacted with the bottom of the first wing surface (1).
  6. 6. The retractable transverse folding airfoil and unfolding and locking mechanism according to claim 5, wherein said baffle (43) comprises an arc-shaped ring (431) located at the bottom of said bearing (41), and transverse plates (432) symmetrically disposed on both sides of said arc-shaped ring (431) and in contact with the outer wall of said bearing (41), said transverse plates (432) being in one-to-one correspondence with said fixed blocks (44), and said fixed blocks (44) being located at the top of said transverse plates (432); The bottom one side of first airfoil (1) has been seted up and has been dodged groove (11), one diaphragm (432) keep away from the terminal surface of arc ring (431) with the terminal surface of first airfoil (1) flushes, another diaphragm (432) keep away from the terminal surface of arc ring (431) with dodge the lateral wall in groove (11) flushes.
  7. 7. The telescopic transverse folding wing and unfolding and locking mechanism according to claim 2, characterized in that the outer side of the shaft sleeve (6) is provided with two double forks (9) which are vertically symmetrical.
  8. 8. The retractable transverse fold airfoil and deployment and locking mechanism according to any one of claims 1 to 7, wherein said torsion bar assembly (3) comprises a resilient torsion bar (31) and a torsion bar locking screw (32), said resilient torsion bar (31) having a first end outer wall milled symmetrically with two first flat surfaces (311) and a second end outer wall milled with a second flat surface (312), respectively; The top of the first airfoil (1) is provided with a groove (12), one side of the top of the first airfoil (1) is provided with a mounting groove (13), the side wall of the groove (12) away from the mounting groove (13) is provided with a positioning hole (121) matched with the first end of the elastic torsion bar (31), and the side wall of the groove (12) close to the mounting groove (13) is provided with a first shaft hole (122) matched with the rod part of the elastic torsion bar (31); The bottom of second airfoil (2) is provided with respectively at intervals with recess (12) and mounting groove (13) matched first boss (21) and second boss (22), the first end of elasticity torsion bar (31) passes in proper order second boss (22), first shaft hole (122) and first boss (21) and insert in locating hole (121), torsion bar locking screw (32) pass the outer wall of second boss (22) and with second plane (312) are connected.
  9. 9. The telescopic transverse folding airfoil and unfolding and locking mechanism according to claim 8, characterized in that a first mounting hole (14) is respectively formed in the bottom wall of the groove (12) and the bottom wall of the mounting groove (13), a second spring (15) is arranged in the bottom wall of the first mounting hole (14), an airfoil positioning pin (16) is connected to the top of the second spring (15), and airfoil positioning holes (23) corresponding to and matched with the airfoil positioning pins (16) are respectively formed in the bottoms of the first boss (21) and the second boss (22); When the airfoil body is unfolded, the top of the airfoil positioning pin (16) is inserted into the corresponding airfoil positioning hole (23), when the airfoil body is folded, the second spring (15) is compressed, and the airfoil positioning pin (16) is in contact with the surface of the second airfoil (2).
  10. 10. The telescopic transverse folding airfoil and unfolding and locking mechanism according to claim 9, characterized in that the side wall of the first airfoil (1) is respectively provided with a first through groove (17) which is in one-to-one correspondence and communication with the two first mounting holes (14), the side wall of the first airfoil (1) is provided with a second through groove (18) which is vertical to and communicated with the first through groove (17), and the outer diameter of the top of the airfoil positioning pin (16) is matched with the groove diameter of the second through groove (18); the top side of first airfoil (1) is equipped with first fillet, first boss (21) and second boss (22) are equipped with the second fillet that corresponds with first fillet respectively.

Description

Telescopic transverse folding wing surface and unfolding and locking mechanism Technical Field The invention relates to the technical field of aerospace, in particular to a telescopic transverse folding airfoil surface and an unfolding and locking mechanism. Background The aerofoil is a controllable aerodynamic surface arranged outside an aircraft (such as an aircraft, a rocket and other spacecrafts or an aircraft), and has the main function of changing the flight attitude, the track or the stability of the aircraft by generating aerodynamic force during deflection. The air wing surface is generally protruded out of the outer surface of the aircraft, so that the air wing surface is often required to be folded and filled for launching and then unfolded, the space utilization is improved, and the volume and the weight of a launching box (barrel) are reduced. Depending on the form of the fold, the common arrangements of fold airfoils can generally be divided into longitudinal folds and transverse folds. The longitudinal folding is suitable for the wing surface with the aspect ratio larger than 1, the space inside the cabin body is utilized by the longitudinal folding, an opening is reserved on the cabin body in the longitudinal folding scheme, the wing surface is folded towards the longitudinal direction of the cabin body along the wing surface shaft, the wing surface is partially or completely arranged inside the cabin body after folding, but the opening of the cabin body is easily influenced by air flow after unfolding, the folding angle of the longitudinal folding is limited by the space of an unfolding locking mechanism, and most of folding angles are controlled to be 90 degrees. The transverse folding has no requirement on the aspect ratio, the wing surface is folded transversely along the wing surface axis by the transverse folding, and the wing surface is still outside the cabin after folding. The transverse folding has been developed to the airfoil multistage folding at present, and it is unblocked through control command, and expansion and locking structure are more complicated, and control is loaded down with trivial details to the airfoil is still outside the cabin after folding, takes very big space. The installation space outside the aircraft is reduced after the existing longitudinal folding and transverse folding wing surfaces are folded, but the wing surfaces cannot realize telescopic movement along the wing surface axial direction (radial direction of the cabin body), and the space inside the cabin body cannot be fully utilized to further reduce the appearance installation envelope of the aircraft. From the aspects of unfolding and locking modes, the traditional unfolding and locking modes comprise unfolding by adopting a initiating explosive device, locking by adopting a compression spring unfolding matched locking mechanism, locking by adopting a torsion spring unfolding matched cam mechanism and locking by adopting a torsion bar unfolding matched locking mechanism. The initiating explosive device is adopted to perform unfolding, the unfolding force is large, the structure is complex, and if the airfoil surface needs to be repeatedly folded, the initiating explosive device needs to be added for many times, so that the cost is greatly increased. The torsion spring is unfolded and matched with the locking mode of the cam mechanism, the torsion moment of the torsion spring is lower, the unfolding time of the wing surface is reduced, the cam mechanism is easily locked, and the wing surface still moves after locking. The pre-tightening force of the pressure spring is limited, so that the pressure spring occupies a large installation space for realizing the rapidity of expansion. The torsion bar is required to be processed and installed in deep holes corresponding to the airfoil surface, and the manufacturability is poor. The existing locking mechanism generally adopts a cylinder wall electromagnetic lock, a spring pin and the like, the electromagnetic lock needs to be powered on, the structure is complex, and the spring pin is simple in structure and is easy to be influenced by unfolding impact, so that the electromagnetic lock cannot be normally inserted into a locking hole. Disclosure of Invention The invention aims to provide a telescopic transverse folding wing surface and an unfolding and locking mechanism, which are used for solving the problems of the background technology. The technical scheme for solving the technical problems is as follows: a retractable transverse fold airfoil and deployment and locking mechanism comprising: the wing surface body comprises a first wing surface and a second wing surface, the first wing surface is in running fit with the second wing surface through the torsion bar component, when the wing surface body is unfolded, the side surface of the second wing surface is flush with the side surface of the first wing surface, and when the wing surface body is folded