Full-sealed linkage folding and unfolding mechanism with double folding wings

Abstract

A double-folding-wing full-sealing linkage folding and unfolding mechanism comprises a double-folding deformation wing, a hinge mechanism, a steel wire rope assembly, a 90-degree reverse screw mechanism, a 180-degree reverse screw mechanism and a rope mechanism. The 90-degree reverse screw mechanism is mounted in the middle of the fixed inner wing 1a and the folding middle wing 1b, and is rotationally supported by a middle wing hinge 2a; the 180-degree reverse screw mechanism is mounted in the middle of the folding middle wing 1b and the folding outer wing 1c, and is rotationally supported by an outer wing hinge 2b; the rope mechanism rotates and outputs, an inner wing steel wire rope 3a is pulled to move in a reciprocating mode, a middle wing steel wire rope 3b and an outer wing steel wire rope 3c are in reciprocating linkage, and then a right-handed moving rod 4c, a left-handed moving rod 5c1 and a right-handed moving rod 5c2 are forced to be engaged in a linear variable-rotation rolling mode, so that a folding middle wing 1b rotates by 90 degrees, and a folding outer wing 1c rotates by 180 degrees; the full-unfolding and full-folding effects of the double-folding deformation wing under the conditions of a single driving source and power transmission sealing are achieved.

Description

Technical Field

[0001] The invention relates to a folding and unfolding mechanism, in particular to a double-folding-wing fully sealed linkage folding and unfolding mechanism, belonging to the field of machinery. Background Art

[0002] Folding the wing surface of an aircraft can reduce the external installation space, and unfolding it can obtain a large lift area. It is a common large-scale deformation method. The folded volume is smaller and the unfolded area is larger. Using double folding wings is one of the effective ways to solve this problem, but double folding wings have the following key difficulties in driving:

[0003] (1) The folding wing has high thickness and high torque.

[0004] For example, in the Chinese patent CN103129735A-three-section double folding wing, the middle section folding wing is driven by a crank-connecting rod mechanism, and the outer wing folding drive is achieved by a torsion spring. If the crank-connecting rod achieves a 90° rotation angle, the movement space requirement of the rod is relatively large, and the torsion spring achieves high torque rotation, which has relatively large requirements for the diameter, number of turns, height, etc. of the spring coil. Therefore, this patent is for the application of low-speed drones and aircraft cars, and cannot adapt to the flat wing requirements of high Mach number aircraft.

[0005] (2) Flat and thin space, the driving mechanism is difficult to fold repeatedly

[0006] For example, Chinese patent CN106839897B - a linear spiral unfolding folding wing mechanism. The folding wing mechanism adopts a linear spiral unfolding mechanism, which is realized by an actuator push. The two are coaxially arranged at the hinge joint. The article mentions that the double folding wing linkage can be pulled in a single direction by rope, but cannot be folded repeatedly, and the actuator causes the wing surface thickness to increase significantly.

[0007] (3) The driving mechanism is exposed and power transmission sealing is difficult

[0008] For example, Chinese patent CN117302587A - A folding wing deployment mechanism for a UAV, mentions the use of torsion springs and locking springs to drive the folding wings to unfold; Chinese patent CN115056966B - Z-type folding wing unmanned aerial vehicle wing folding structure and its working method, mentions the use of a servo hinge block mechanism to achieve folding. Both typical cases show that the folding mechanism must ensure external leakage and cannot be sealed. Double folding usually adopts a dual-drive setting, and power transmission and linkage in a single-drive case are difficult to achieve. Summary of the invention

[0009] The technical problem solved by the present application is: to overcome the deficiencies of the prior art and provide a double-folding wing fully sealed linkage folding and unfolding mechanism, so as to achieve a continuous wing surface structure, a small rotation gap, and a continuous thickness change, thereby obtaining a benefit level of this invention that cannot be achieved by a traditional single folding wing; and to achieve an ultra-large unfolding area and an ultra-small folding volume of the folding wing surface under fully sealed, single-drive, linkage conditions.

[0010] The technical solutions provided by this application are as follows:

[0011] A double-folding wing fully sealed linkage folding and unfolding mechanism, comprising a double-folding deformable wing, a first steel wire rope assembly and a 90° reverse spiral mechanism; the double-folding deformable wing comprises a cabin section 1d, a fixed inner wing 1a, a folding middle wing 1b and a folding outer wing 1c, the cabin section 1d and the fixed inner wing 1a are fixedly connected, the fixed inner wing 1a, the folding middle wing 1b and the folding outer wing 1c are sequentially rotatably connected to each other along the extension direction through a hinge mechanism; the 90° reverse spiral mechanism comprises a spline seat 4a, a rotating arm 4b and a right-handed moving rod 4c, the spline seat 4a is fixedly connected to the fixed inner wing 1a, the rotating arm 4b is fixedly connected to the folding middle wing 1b, the right-handed moving rod 4c is slidably connected to the spline seat 4a along the direction of the rotation axis between the fixed inner wing 1a and the folding middle wing 1b, the outer wall surface of the right-handed moving rod 4c is provided with an annular protrusion, the right-handed moving rod 4c is threadedly matched with the annular protrusion of the right-handed moving rod 4c, and the first steel wire rope assembly is used to drive the right-handed moving rod 4c to move relative to the spline seat 4a;

[0012] The 180° reverse spiral mechanism further comprises a second steel wire rope assembly, a third steel wire rope assembly and a 180° reverse spiral mechanism, wherein the 180° reverse spiral mechanism comprises a spline seat 5a, a rotating arm 5b, a left-handed moving rod 5c1 and a right-handed moving rod 5c2, wherein the spline seat 5a is fixedly connected to the folding middle wing 1b, the rotating arm 5b is fixedly connected to the folding outer wing 1c, the left-handed moving rod 5c1 and the right-handed moving rod 5c2 are both slidably connected to the spline seat 5a along the direction of the rotating axis between the folding middle wing 1b and the folding outer wing 1c, and the rotating arm 5b is provided with a left-handed spiral hole and a right-handed spiral hole, so that the rotating arm 5b is an 8-shaped structure, and the left-handed moving rod 5c1 and the right-handed moving rod 5c2 are both slidably connected to the spline seat 5a along the direction of the rotating axis between the folding middle wing 1b and the folding outer wing 1c. The moving rod 5c1 passes through the left-handed spiral hole of the rotating arm 5b, and the right-handed moving rod 5c2 passes through the right-handed spiral hole of the rotating arm 5b, and the annular protrusions in the middle of the left-handed moving rod 5c1 and the right-handed moving rod 5c2 are both threadedly connected to the rotating arm 5b; the third wire rope assembly is used to drive the left-handed moving rod 5c1 and the right-handed moving rod 5c2 to move relative to the spline seat 5a, and the moving directions of the left-handed moving rod 5c1 and the right-handed moving rod 5c2 are opposite, and the first wire rope assembly drives the third wire rope assembly through the second wire rope assembly to drive the left-handed moving rod 5c1 and the right-handed moving rod 5c2 to move.

[0013] The first steel wire rope assembly includes an inner wing steel wire rope 3a with an annular structure. The inner wing steel wire rope 3a passes through the cavity of the right-handed moving rod 4c and is fixedly connected to the right-handed moving rod 4c through the inner wing rope joint 3d. The fixed inner wing 1a is rotatably connected to a pulley 4f at each end of the spline seat 4a. The part of the inner wing steel wire rope 3a passing through the two ends of the right-handed moving rod 4c bypasses the pulley 4f and extends to the side of the cabin section 1d away from the fixed inner wing 1a. The part of the inner wing steel wire rope 3a extending outside the cabin section 1d is connected to a driving structure for driving the inner wing steel wire rope 3a to rotate, so that the inner wing steel wire rope 3a drives the right-handed moving rod 4c to move.

[0014] The driving structure includes a shell 6a and a drum 6b. The shell 6a is located on the side of the cabin section 1d away from the fixed inner wing 1a. The drum 6b is rotatably connected to the inside of the circular mounting hole of the shell 6a. A servo motor is installed at one end of the drum 6b, and an end tensioner 6c is installed at the other end. The two end joints of the inner wing steel wire rope 3a are fixed inside the drum 6b through the end tensioner 6c. The shell 6a is threadedly connected with a center tensioner 6d, which is a screw. The end of the screw is pressed against the cabin section 1d. The screw is rotated to change the center distance of the shell 6a relative to the cabin section 1d.

[0015] The third steel wire rope assembly includes a ring-shaped outer wing steel wire rope 3c, and hinge pulleys 2c are arranged at both ends of the spline seat 5a. The outer wing steel wire rope 3c passes through the middle part of the left-handed moving rod 5c1 and the right-handed moving rod 5c2 and is fixedly connected to the left-handed moving rod 5c1 and the right-handed moving rod 5c2, and the outer wing steel wire rope 3c bypasses the hinge pulley 2c. The rotation of the outer wing steel wire rope 3c drives the left-handed moving rod 5c1 and the right-handed moving rod 5c2 to move in the opposite direction.

[0016] The second steel wire rope assembly includes a middle wing steel wire rope 3b, one end of the middle wing steel wire rope 3b is connected to the inner wing steel wire rope 3a, and the other end is connected to the outer wing steel wire rope 3c.

[0017] The middle wing steel wire rope 3b is a two-section structure, and the two sections are connected by the external thread of the middle wing joint screw 3f and the internal thread of the middle wing joint screw sleeve 3g to achieve length adjustment and tensioning of the middle wing steel wire rope 3b.

[0018] The spline seat 4a includes two cylindrical structures fixedly connected to the fixed inner wing 1a, with a gap of a set distance between the two cylindrical structures, and the annular protrusion on the outer circumferential surface of the right-handed moving rod 4c is located in the gap; a ball spline groove is provided inside the cylindrical structure, and the outer surfaces of the right-handed moving rod 4c standing on both sides of the annular protrusion are provided with ball spline grooves, and balls 4d are filled between the ball spline grooves of the cylindrical structure and the ball spline grooves of the right-handed moving rod 4c; a spiral groove is provided inside the rotating arm 4b, and a spiral groove is provided on the annular protrusion surface of the right-handed moving rod 4c; balls 4d are filled between the spiral groove of the right-handed moving rod 4c and the spiral groove of the outer wall of the cylinder.

[0019] The hinge mechanism includes a middle wing hinge 2a, which is connected between the fixed inner wing 1a and the folding middle wing 1b; the middle wing hinge 2a is a T-shaped structure, including a first cylindrical part and a second cylindrical part that are perpendicular to each other, and the first cylindrical part and the second cylindrical part are both provided with through holes in the axial direction. The position where the through holes of the first cylindrical part and the second cylindrical part in the middle wing hinge 2a are connected is rotatably connected to a hinge pulley 2c through a hinge pin shaft 2d, the first cylindrical part is fixedly connected to the folding middle wing 1b, and the second cylindrical part is rotatably connected to the fixed inner wing 1a.

[0020] The hinge mechanism includes an outer wing hinge 2b, which is connected between the folding middle wing 1b and the folding outer wing 1c; the outer wing hinge 2b is an I-shaped structure, including a third cylindrical part, a fourth cylindrical part and a fifth cylindrical part with a through hole at the axial position, the fourth cylindrical part is perpendicular to the third cylindrical part and the fifth cylindrical part, the third cylindrical part is rotatably connected to the folding middle wing 1b, and the fifth cylindrical part is rotatably connected to the folding outer wing 1c, and a hinge pulley 2c is rotatably connected in the through hole of the outer wing hinge 2b.

[0021] The advantages of the present invention compared with the prior art are:

[0022] (1) The present invention proposes a double-folding wing fully sealed linkage folding and unfolding mechanism, in which the fixed wing and the two-section folding wing are composed of three sections to form a complete triangular wing surface. The rotational gap between the two wing surfaces is small and the thickness direction changes continuously. Through the folding action of the two-section folding wing, an ultra-large wingspan area can be obtained when fully unfolded, and the lift effect is the best. When fully folded, a compact volume can be obtained with the minimum resistance. Compared with the traditional single folding wing, the benefit level of this invention cannot be achieved.

[0023] (2) The double-folding wing fully sealed linkage folding and unfolding mechanism proposed in the present invention adopts a special hinge mechanism and a pulley combination, which can allow the wire rope to pass through the hinge cavity and then penetrate the inside of the wing surface. Compared with gear linkage and other methods, it realizes a transmission system that is leak-proof and fully sealed, which is particularly suitable for the airflow environment of aircraft and greatly reduces the disturbance to the wing surface.

[0024] (3) The present invention proposes a double-folding wing fully sealed linkage folding and unfolding mechanism, in which the inner wing steel wire rope 3a, the middle wing steel wire rope 3b, and the outer wing steel wire rope 3c are connected by the same crimping joint and driven by a single rope mechanism, thereby ensuring that the three groups of steel wire ropes are linked and saving space.

[0025] (4) The present invention proposes a double-folding wing fully sealed linkage folding and unfolding mechanism, which provides an external opening on the wing surface to tighten the screws and screw sleeves of the middle wing wire rope 3b and the outer wing wire rope 3c to ensure the tightness of the wire rope. This method occupies a small space and is particularly suitable for flat wing surface structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional diagram of the internal structure of a double-folding-wing fully sealed linkage folding and unfolding mechanism provided by an embodiment of the present invention;

[0027] Figure 2 This is an axial view of a double-folding-wing fully sealed linkage folding and unfolding mechanism provided by an embodiment of the present invention;

[0028] Figure 3 This is a side view of a double-folding-wing fully sealed linkage folding and unfolding mechanism provided by an embodiment of the present invention when fully unfolded at 0°;

[0029] Figure 4 It is a side view of a double folding wing fully sealed linkage folding and unfolding mechanism linked to 30° folding provided by an embodiment of the present invention;

[0030] Figure 5 It is a side view of a double-folding-wing fully sealed linkage folding and unfolding mechanism linked to 60° folding provided by an embodiment of the present invention.

[0031] Figure 6 It is a side view of a double-folding-wing fully sealed linkage folding and unfolding mechanism linked to 90° folding provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments disclosed in the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] like Figure 1 As shown, an embodiment of the present application discloses a double-folding wing fully sealed linkage folding and unfolding mechanism, including: double-folding deformable wings, a hinge mechanism, a wire rope assembly, a 90° reverse spiral mechanism, a 180° reverse spiral mechanism, and a rope mechanism.

[0034] The 90° reverse spiral mechanism is installed at the middle position of the fixed inner wing 1a and the folding middle wing 1b, and is supported by the middle wing hinge 2a for rotation; the 180° reverse spiral mechanism is installed at the middle position of the folding middle wing 1b and the folding outer wing 1c, and is supported by the outer wing hinge 2b for rotation; the rope mechanism rotates and outputs, pulling the inner wing steel wire 3a to move back and forth, and making the middle wing steel wire 3b and the outer wing steel wire 3c reciprocate, thereby forcing the right-handed moving rod 4c, the left-handed moving rod 5c1, and the right-handed moving rod 5c2 to rotate 90° and the folding outer wing 1c through linear-rotational rolling engagement, so that the folding middle wing 1b rotates 90° and the folding outer wing 1c rotates 180°, thereby achieving the full unfolding and folding effects of the double folding deformable wings under a single driving source and sealed conditions.

[0035] Furthermore, the double folding deformable wing comprises: a fixed inner wing 1a, a folding middle wing 1b, a folding outer wing 1c, and a cabin section 1d; Figure 2 shown.

[0036] The fixed inner wing 1a, the folding middle wing 1b, and the folding outer wing 1c are rotated and connected to each other in sequence along the span direction, and the three sections form a complete triangular wing surface. The sweep angles of the edges on both sides of the wing surface are different, and the thickness gradually decreases along the span direction, which conforms to the appearance characteristics of the aircraft;

[0037] The cabin section 1d is an arc-shaped structure, with a rope mechanism installed on the inner side and a fixed inner wing 1a installed on the outer side. The cabin section 1d is provided with two rectangular windows for the wire rope 3a to pass through; three sets of hinge mechanisms are installed between the fixed inner wing 1a and the folding middle wing 1b, and the two can rotate 90° relative to each other; two sets of hinge mechanisms are installed between the folding middle wing 1b and the folding outer wing 1c, and the two can rotate 180° relative to each other;

[0038] Furthermore, the hinge mechanism includes: a middle wing hinge 2a and an outer wing hinge 2b, and the middle wing hinge 2a and the outer wing hinge 2b are both rotatably connected to a hinge pulley 2c via a hinge pin 2d.

[0039] The middle wing hinge 2a is a T-shaped structure, including two cylindrical parts perpendicular to each other. The two cylindrical parts are rotating structures, namely the first cylindrical part and the second cylindrical part. The end of the first cylindrical part is integrally connected to the middle part of the second cylindrical part; the cylindrical parts are axially provided with through holes for passing the steel wire rope; a rectangular blind hole is provided inside the middle wing hinge 2a, and intersects with the circular hole, which is used to install a set of pulley structures and pass the steel wire rope; the middle wing hinge 2a is installed in the relative rotation position of the fixed inner wing 1a and the folding middle wing 1b, and the middle wing hinge 2a is provided with a square flange part for connecting with the folding middle wing 1b, so that the first cylindrical part is fixedly connected to the folding middle wing 1b, and the second cylindrical part is rotatably connected to the fixed inner wing 1a; the number of installed middle wing hinges 2a is 3, of which the two on the right pass the steel wire rope to form a sealing effect.

[0040] The outer wing hinge 2b is an I-shaped structure, and its appearance is a symmetrical combination of two middle wing hinges 2a. It consists of three cylindrical parts, specifically including a third cylindrical part, a fourth cylindrical part and a fifth cylindrical part. The fourth cylindrical part is perpendicular to the third cylindrical part and the fifth cylindrical part, and the ends of the fourth cylindrical part are respectively connected to the middle parts of the third cylindrical part and the fifth cylindrical part; a through hole is provided in the middle of the cylindrical part for passing the steel wire rope; the middle connecting part (i.e. the fourth cylindrical part) is provided with a rectangular hole for installing two sets of pulley structures and passing the steel wire rope; the outer wing hinge 2b is installed at the relative rotation position of the folding middle wing 1b and the folding outer wing 1c, the third cylindrical part is rotationally connected to the folding middle wing 1b, and the fifth cylindrical part is rotationally connected to the folding outer wing 1c; the number of outer wing hinges 2b installed is 2, which constitutes a sealing effect.

[0041] Furthermore, the wire rope assembly includes: an inner wing wire rope 3a, a middle wing wire rope 3b, an outer wing wire rope 3c, an inner wing rope joint 3d, an outer wing rope joint 3e, a middle wing joint screw 3f, a middle wing joint nut 3g, an outer wing joint screw 3h, and an outer wing joint nut 3i.

[0042] The inner wing steel wire rope 3a is a one-section structure, and the inner wing steel wire rope 3a is an annular structure, with a cylindrical threaded joint 3d crimped at the middle position of the rope and rectangular joints crimped at both ends of the rope; the inner wing steel wire rope 3a passes through the cavity of the right-handed moving rod 4c, and is fixedly connected to the right-handed moving rod 4c through the inner wing rope joint 3d; the inner wing steel wire rope 3a passes around the pulley 4f and the pulley support 4g, is wound around the drum 6b, and the rectangular joint is installed on the end tensioning 6c.

[0043] The middle wing steel wire rope 3b is a two-section structure, one end of the middle wing steel wire rope 3b is connected to the inner wing steel wire rope 3a through a cylindrical threaded joint 3d, and the other end is fixedly connected to the outer wing steel wire rope 3c through an outer wing rope joint 3e. One section of the middle wing steel wire rope 3b is connected in parallel and overlapped with the steel wire rope 3a, sharing the joint 3d, and the other section is connected in parallel and overlapped with the outer wing steel wire rope 3c, sharing the outer wing rope joint 3e. Specifically, a total of four outer wing rope joints 3e are arranged on the outer wing steel wire rope 3c, and the two outer wing rope joints 3e are used to connect with the two middle wing steel wire ropes. The ends of the wing steel wire rope 3b are connected to the outer wing steel wire rope 3c, and the two outer wing rope joints 3e are fixedly connected to the left-handed moving rod 5c1, and the other two outer wing rope joints 3e are fixedly connected to the right-handed moving rod 5c2. The middle wing steel wire rope 3b passes through the rotating shaft cavity of the middle wing hinge 2a, and bypasses the hinge pulley 2c and the hinge pin 2d. In the narrow cavity of the folded middle wing 1b, the external thread of the middle wing joint screw 3f is connected to the internal thread of the middle wing joint screw sleeve 3g to achieve length adjustment and tensioning of the middle wing steel wire rope 3b.

[0044] The outer wing steel wire rope 3c is a two-section structure, and two sections of the steel wire rope are passed between them. One section of the steel wire rope passes through the rotating shaft cavity of the outer wing hinge 2b and passes through the middle of the left-handed moving rod 5c1, and bypasses the hinge pulley 2c, and both ends extend into the cavity of the folded outer wing 1c. The other section of the steel wire rope is located in the cavity of the folded outer wing 1c and passes through the middle of the right-handed moving rod 5c2. The two sections of the steel wire rope are connected end to end through two adjustment components to form the outer wing steel wire rope 3c. The adjustment component includes an outer wing joint screw 3h and an outer wing joint nut 3i. The outer thread of the outer wing joint screw 3h is connected with the inner thread of the outer wing joint nut 3i to achieve the length adjustment and tensioning of the outer wing steel wire rope 3c.

[0045] Further, the 90° reverse spiral mechanism comprises: a spline seat 4a, a rotating arm 4b, a right-handed moving rod 4c, a ball 4d, a pin 4e, a pulley 4f, and a pulley support 4g;

[0046] The spline seat 4a has an elongated cylindrical appearance and a first square flange, specifically including a cylindrical structure and a first square flange connected to the outside of the cylindrical structure, and the cylindrical structure is fixedly connected to the fixed inner wing 1a through the first square flange. A plurality of ball spline grooves are arranged inside the cylindrical structure, and the number of the cylindrical structures is two. There is a gap of a set distance between the two cylindrical structures, and an annular protrusion is arranged in the middle of the outer circumferential surface of the right-handed moving rod 4c, and the annular protrusion is located in the gap. The right-handed moving rod 4c is inserted into the inside of the cylindrical structure, and a plurality of ball spline grooves are arranged at both ends of the outer surface of the right-handed moving rod 4c, and balls 4d are filled between the ball spline grooves of the cylindrical structure and the ball spline grooves of the right-handed moving rod 4c, so that the right-handed moving rod 4c and the spline seat 4a can slide relative to each other in a straight line direction. The right-handed moving rod 4c is a hollow rod structure for the inner wing wire rope 3a to pass through. The rotating arm 4b is a short cylindrical body and a square flange structure, specifically including a cylindrical body and a second square flange connected to the outside of the cylindrical body. The cylindrical body is sleeved on the outside of the right-handed moving rod 4c, and the cylindrical body is fixedly connected to the folded middle wing 1b through the second square flange. A plurality of spiral grooves are provided inside the cylindrical body; a plurality of spiral grooves are provided on the annular raised surface in the middle of the right-handed moving rod 4c; balls 4d are filled between the spiral grooves of the right-handed moving rod 4c and the spiral grooves on the outer wall of the cylinder to reduce friction, so that when the right-handed moving rod 4c is driven by the inner wing wire rope 3a to move in a straight line, the rotating arm 4b is driven to rotate through the spiral grooves and the balls 4d; the balls 4d are blocked by the cylindrical structures at both ends and will not fall out of the spiral grooves.

[0047] The right-handed moving rod 4c makes a reciprocating linear movement, and uses the ball spline groove of the spline seat 4a to squeeze the ball 4d and circulate it, limiting the relative rotation of the two and only allowing them to move; the right-handed moving rod 4c and the spiral groove of the spline seat 4a squeeze the ball 4d and circulate it to reduce the friction, forcing the rotating arm 4b to rotate around a fixed axis, and the rotation angle is 0-90°.

[0048] The first square flange is provided with a circular pin hole, and the spline seat 4a uses four pin shafts 4e to connect its own first square flange with the corresponding holes of the fixed inner wing 1a for bearing bending moment; the second square flange is provided with a circular pin hole, and the rotating arm 4b uses two pin shafts 4e to connect its own second square flange with the corresponding holes of the folded middle wing 1b for bearing bending moment.

[0049] Further, the 180° reverse spiral mechanism comprises: a spline seat 5a, a rotating arm 5b, a left-handed moving rod 5c1, a right-handed moving rod 5c2, a ball 5d, a pin 5e, a pulley 5f, and a pulley support 5g;

[0050] The spline seat 5a is identical to the spline seat 4a in appearance, geometric parameters, and installation method; specifically, the spline seat 5a is fixedly connected to the folding middle wing 1b, and the number of spline seats 5a is 2, wherein the hollow parts of two groups are installed with left-handed moving rods 5c1, and the hollow parts of the other two groups are installed with right-handed moving rods 5c2, and the left-handed moving rods 5c1 and the right-handed moving rods 5c2 are both slidably connected to the spline seat 5a along a straight line direction; the rotating arm 5b is fixedly connected to the folding outer wing 1c, and the rotating arm 5b is provided with a left-handed spiral hole and a right-handed spiral hole, so that the rotating arm 5b is an 8-shaped structure, the left-handed moving rod 5c1 passes through the left-handed spiral hole of the rotating arm 5b, and the right-handed moving rod 5c2 passes through the right-handed spiral hole of the rotating arm 5b, and the left-handed moving rod 5c1 and the right-handed moving rod 5c2 are both threadedly connected to the rotating arm 5b. The spiral groove geometric parameters of the rotating arm 5b are the same as those of the rotating arm 4b, except that the rotating arm 5b is a combination of left-handed and right-handed.

[0051] The spline seat 5a is connected to the corresponding holes of the folding middle wing 1b by four pins 5e to bear the bending moment; the rotating arm 5b is connected to the corresponding holes of the folding outer wing 1c by four pins 5e to bear the bending moment.

[0052] The 180° reverse spiral mechanism has a similar working principle to the 90° reverse spiral mechanism, and under the cyclic pulling of the steel wire rope 3c, the relative rotation angle of the folding middle wing 1b and the folding outer wing 1c can be 0-180°.

[0053] The pulley support 5g is fixedly connected to the folding middle wing 1b, and a spline seat 5a is fixed outside each of the two ends of the spline seat 5a, and the pulley 5f is rotatably connected to the spline seat 5a. After one end of the middle wing wire rope 3b is connected to the inner wing wire rope 3a, it passes around the hinge pulley 2c connected to the middle wing hinge 2a, passes around the pulley 5f, and then is connected to the outer wing wire rope 3c.

[0054] Furthermore, the rope mechanism includes: a housing 6a, a drum 6b, an end tensioner 6c, and a center tensioner 6d.

[0055] The housing 6a is a flange structure with a circular mounting hole. The drum 6b is rotatably connected to the circular mounting hole of the housing 6a. A servo motor is installed at one end of the drum 6b, and an end tensioner 6c is installed at the other end. The two end joints of the wire rope 3a are fixed inside the drum 6b through the end tensioner 6c. The servo motor drives the drum 6b to rotate, and the wire rope 3a is pulled around its surface to achieve reciprocating winding and releasing movements. The center tensioner 6d includes a screw with an external thread structure. The screw and the flange of the housing 6a are matched through internal threads. Since the housing 6a is tightened to the cabin section 1d through the inner wing wire rope 3a, and the end of the screw is pressed against the cabin section 1d, the screw is rotated, and the screw drives the distance between the housing 6a and the cabin section 1d to change, so that the housing 6a can change the center distance relative to the cabin section 1d, thereby adjusting the tensioning effect of the wire rope 3a.

[0056] Furthermore, the geometric parameters such as the profile, lead, lift angle, number, and stroke of the spiral grooves of the right-handed moving rod 4c, the left-handed moving rod 5c1, and the right-handed moving rod 5c2 are all the same. Except for the different rotation directions, the rest of the structural settings are consistent; the moving directions of the right-handed moving rod 4c and the left-handed moving rod 5c1 are always opposite, and the moving directions of the left-handed moving rod 5c1 and the right-handed moving rod 5c2 are always the same; therefore, the full unfolding and full folding effects of the double-folding deformable wings can be achieved.

[0057] Working principle:

[0058] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the fixed inner wing 1a, the folding middle wing 1b, and the folding outer wing 1c are arranged in sequence along the direction of extension, and the three sections form a complete triangular wing surface. The hinge mechanism is located between the two sections, so that they can maintain relative rotational motion; the rope mechanism is driven by the servo motor to drive the drum 6b to rotate and pull the wire rope 3a, and at the same time, the middle wing wire rope 3b and the outer wing wire rope 3c are linked to pass through the pulley group of the hinge mechanism respectively to form a closed loop motion rope system; the wire rope 3a pulls the right-handed moving rod 4c to reciprocate, and the ball 4d is engaged with the spiral groove, and the rotating arm 4b is forced to rotate a maximum of 90° through linear-rotation rolling engagement; the middle wing wire rope 3b pulls the left-handed moving rod 5c1 to reciprocate, and the outer wing wire rope 3c pulls the right-handed moving rod 5c2 to reciprocate, and the ball 4d is engaged with the spiral groove, and the rotating arm 5b is forced to rotate a maximum of 180° through linear-rotation rolling engagement, so as to realize the full unfolding and full folding linkage effect of the double folding deformable wings under a single driving source and sealed conditions.

[0059] The contents not described in detail in this application specification belong to the common knowledge of those skilled in the art.

[0060] The present application is described in detail above in conjunction with specific implementation methods and exemplary examples, but these descriptions cannot be understood as limiting the present application. Those skilled in the art understand that, without departing from the spirit and scope of the present application, a variety of equivalent replacements, modifications or improvements can be made to the technical solution of the present application and its implementation methods, all of which fall within the scope of the present application. The scope of protection of the present application shall be subject to the attached claims.

Claims

1. A double-folding wing fully sealed linkage folding and unfolding mechanism, characterized in that: It includes double folding deformable wings, a first steel wire rope assembly and a 90° reverse spiral mechanism; The double foldable deformable wing includes a cabin section 1d, a fixed inner wing 1a, a foldable middle wing 1b and a foldable outer wing 1c. The cabin section 1d and the fixed inner wing 1a are fixedly connected. The fixed inner wing 1a, the foldable middle wing 1b and the foldable outer wing 1c are rotatably connected to each other in sequence along the direction of extension through a hinge mechanism. The 90° reverse spiral mechanism includes a spline seat 4a, a rotating arm 4b and a right-handed moving rod 4c, the spline seat 4a is fixedly connected to the fixed inner wing 1a, the rotating arm 4b is fixedly connected to the folded middle wing 1b, the right-handed moving rod 4c is slidably connected to the spline seat 4a along the direction of the rotation axis between the fixed inner wing 1a and the folded middle wing 1b, the outer wall surface of the right-handed moving rod 4c is provided with an annular protrusion, the right-handed moving rod 4c is threadedly matched with the annular protrusion of the right-handed moving rod 4c, and the first wire rope assembly is used to drive the right-handed moving rod 4c to move relative to the spline seat 4a.

2. A double-folding-wing fully sealed linkage folding and unfolding mechanism according to claim 1, characterized in that: It also includes a second steel wire rope assembly, a third steel wire rope assembly and a 180° reverse spiral mechanism, the 180° reverse spiral mechanism includes a spline seat 5a, a rotating arm 5b, a left-handed moving rod 5c1 and a right-handed moving rod 5c2, the spline seat 5a is fixedly connected to the folding middle wing 1b, the rotating arm 5b is fixedly connected to the folding outer wing 1c, the left-handed moving rod 5c1 and the right-handed moving rod 5c2 are both slidably connected to the spline seat 5a along the direction of the rotating axis between the folding middle wing 1b and the folding outer wing 1c, the rotating arm 5b is provided with a left-handed spiral hole and a right-handed spiral hole, so that the rotating arm 5b is an 8-shaped structure, the left-handed moving rod 5c1 passes through the left-handed spiral hole of the rotating arm 5b, the right-handed moving rod 5c2 passes through the right-handed spiral hole of the rotating arm 5b, and the annular protrusions in the middle of the left-handed moving rod 5c1 and the right-handed moving rod 5c2 are both threadedly connected to the rotating arm 5b; The third wire rope assembly is used to drive the left-handed moving rod 5c1 and the right-handed moving rod 5c2 to move relative to the spline seat 5a, and the movement directions of the left-handed moving rod 5c1 and the right-handed moving rod 5c2 are opposite. The first wire rope assembly drives the third wire rope assembly through the second wire rope assembly to drive the left-handed moving rod 5c1 and the right-handed moving rod 5c2 to move.

3. A double-folding-wing fully sealed linkage folding and unfolding mechanism according to claim 1 or 2, characterized in that: The first steel wire rope assembly includes an inner wing steel wire rope 3a with an annular structure. The inner wing steel wire rope 3a passes through the cavity of the right-handed moving rod 4c and is fixedly connected to the right-handed moving rod 4c through the inner wing rope joint 3d. The fixed inner wing 1a is rotatably connected to a pulley 4f at each end of the spline seat 4a. The part of the inner wing steel wire rope 3a passing through the two ends of the right-handed moving rod 4c bypasses the pulley 4f and extends to the side of the cabin section 1d away from the fixed inner wing 1a. The part of the inner wing steel wire rope 3a extending outside the cabin section 1d is connected to a driving structure for driving the inner wing steel wire rope 3a to rotate, so that the inner wing steel wire rope 3a drives the right-handed moving rod 4c to move.

4. A double-folding-wing fully sealed linkage folding and unfolding mechanism according to claim 3, characterized in that: The driving structure includes a shell 6a and a drum 6b. The shell 6a is located on the side of the cabin section 1d away from the fixed inner wing 1a. The drum 6b is rotatably connected to the inside of the circular mounting hole of the shell 6a. A servo motor is installed at one end of the drum 6b, and an end tensioner 6c is installed at the other end. The two end joints of the inner wing steel wire rope 3a are fixed inside the drum 6b through the end tensioner 6c. The shell 6a is threadedly connected with a center tensioner 6d, which is a screw. The end of the screw is pressed against the cabin section 1d. The screw is rotated to change the center distance of the shell 6a relative to the cabin section 1d.

5. The double-folding-wing fully sealed linkage folding and unfolding mechanism according to claim 2, characterized in that: The third steel wire rope assembly includes a ring-shaped outer wing steel wire rope 3c, and hinge pulleys 2c are arranged at both ends of the spline seat 5a. The outer wing steel wire rope 3c passes through the middle part of the left-handed moving rod 5c1 and the right-handed moving rod 5c2 and is fixedly connected to the left-handed moving rod 5c1 and the right-handed moving rod 5c2, and the outer wing steel wire rope 3c bypasses the hinge pulley 2c. The rotation of the outer wing steel wire rope 3c drives the left-handed moving rod 5c1 and the right-handed moving rod 5c2 to move in the opposite direction.

6. A double-folding-wing fully sealed linkage folding and unfolding mechanism according to claim 3, characterized in that: The second steel wire rope assembly includes a middle wing steel wire rope 3b, one end of the middle wing steel wire rope 3b is connected to the inner wing steel wire rope 3a, and the other end is connected to the outer wing steel wire rope 3c.

7. A double-folding-wing fully sealed linkage folding and unfolding mechanism according to claim 6, characterized in that: The middle wing steel wire rope 3b is a two-section structure, and the two sections are connected by the external thread of the middle wing joint screw 3f and the internal thread of the middle wing joint screw sleeve 3g to achieve length adjustment and tensioning of the middle wing steel wire rope 3b.

8. The double-folding-wing fully sealed linkage folding and unfolding mechanism according to claim 2, characterized in that: The spline seat 4a includes two cylindrical structures fixedly connected to the fixed inner wing 1a, with a gap of a set distance between the two cylindrical structures, and the annular protrusion on the outer circumferential surface of the right-handed moving rod 4c is located in the gap; a ball spline groove is provided inside the cylindrical structure, and the outer surfaces of the right-handed moving rod 4c standing on both sides of the annular protrusion are provided with ball spline grooves, and balls 4d are filled between the ball spline grooves of the cylindrical structure and the ball spline grooves of the right-handed moving rod 4c; a spiral groove is provided inside the rotating arm 4b, and a spiral groove is provided on the annular protrusion surface of the right-handed moving rod 4c; balls 4d are filled between the spiral groove of the right-handed moving rod 4c and the spiral groove of the outer wall of the cylinder.

9. The double-folding-wing fully sealed linkage folding and unfolding mechanism according to claim 1, characterized in that: The hinge mechanism comprises a middle wing hinge 2a, the middle wing hinge 2a being connected between the fixed inner wing 1a and the folding middle wing 1b; The middle wing hinge 2a is a T-shaped structure, including a first cylindrical part and a second cylindrical part perpendicular to each other. The first cylindrical part and the second cylindrical part are both provided with through holes in the axial direction. The position where the through holes of the first cylindrical part and the second cylindrical part in the middle wing hinge 2a are connected is rotatably connected to the hinge pulley 2c through the hinge pin shaft 2d. The first cylindrical part is fixedly connected to the folding middle wing 1b, and the second cylindrical part is rotatably connected to the fixed inner wing 1a.

10. The double-folding-wing fully sealed linkage folding and unfolding mechanism according to claim 1, characterized in that: The hinge mechanism includes an outer wing hinge 2b, which is connected between the folding middle wing 1b and the folding outer wing 1c; the outer wing hinge 2b is an I-shaped structure, including a third cylindrical part, a fourth cylindrical part and a fifth cylindrical part with a through hole at the axial position, the fourth cylindrical part is perpendicular to the third cylindrical part and the fifth cylindrical part, the third cylindrical part is rotatably connected to the folding middle wing 1b, and the fifth cylindrical part is rotatably connected to the folding outer wing 1c, and a hinge pulley 2c is rotatably connected in the through hole of the outer wing hinge 2b.

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