A high aspect ratio longitudinal folding wing locking and unlocking device

Abstract

The application relates to a large-aspect-ratio longitudinal folding wing locking and unlocking device, which comprises a piston cylinder, a piston device, an initial locking mechanism, an in-place locking mechanism, a transmission adapter and a driving mechanism; the piston device is slidably arranged in the piston cylinder; the initial locking mechanism is arranged on the side of the piston cylinder body and is used for initially locking the piston device; the in-place locking mechanism adopts a steel ball type locking structure and is arranged at the rear end of a piston rod; the transmission adapter is arranged at the front end of the piston rod and is connected to a wing; and the driving mechanism provides driving force for the piston device, so as to drive the transmission adapter to drive the wing to unfold. The application has the characteristics of simple structure, reliable function, large initial constraint force, small unlocking force and large locking force; the application integrates multiple functions such as wing initial locking and unlocking, driving movement and in-place locking. Meanwhile, the application can realize the functions of manual unlocking of the locking and unlocking device, driving movement and in-place automatic locking, and is convenient to install, debug and maintain.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of aircraft structure design, in particular to a large-aspect-ratio longitudinal folding wing locking and unlocking device. BACKGROUND

[0002] To meet the combat requirements of modern war outside the defense zone, the range of cruise missiles is required to be continuously improved. At the same time, the missile is limited by the strict constraints of the space envelope of the carrier aircraft, and is required to reduce the lateral length, adapt to the carrier platform and launching device, and further improve the carrying capacity of the carrier aircraft to have high-density strike capability. The wing folding technology has become the key technology to solve the contradiction between the long range of cruise missiles and the mounting space of the carrier aircraft.

[0003] The commonly used folding mechanisms for missile wings are horizontal folding and longitudinal folding, and the longitudinal folding is mostly used for large-aspect-ratio missile wings. In the storage, transportation and combat readiness state, the missile wing is in a folded state, reducing the wing span, and after the missile is launched, the wing is automatically unfolded. The locking and unlocking device plays the role of reliably locking the wing in the folded state, and after receiving the control system command, it can automatically unlock and drive the wing to unfold, and after the wing is unfolded to the position, it can be reliably locked again.

[0004] Through prior art retrieval, it is found that Chinese patent publication No. CN103644782A discloses a powder actuator unlocking device, which realizes the functions of large initial locking force of the missile wing and small unlocking force during work. However, it has single function and does not have the function of locking the wing after unfolding to the position, and an additional locking mechanism needs to be set; after the piston moves to the position, it does not have the function of position buffer, and the unlocking impact force is large; the unlocking device is installed and used once, and does not have the function of folding adjustment of the missile wing. At the same time, the Y-shaped layout form of the powder actuator output thrust driving the wing surface will cause the layout of the wing assembly to be too long, occupy more space in the direction of the missile axis, and affect the aerodynamic performance of the whole missile.

[0005] Therefore, it is urgent to develop a large-aspect-ratio longitudinal folding wing locking and unlocking device with combined structure and function, high space utilization, small unlocking impact force, and convenient installation, adjustment and service processing. SUMMARY

[0006] In view of the above defects or improvement needs of the prior art, the present application provides a large-aspect-ratio longitudinal folding wing locking and unlocking device, which has the characteristics of large initial constraint force, small unlocking force and large locking force, and is simple in mechanism composition, reliable in function, and convenient in installation, adjustment and service processing. Thus, the technical problems of single structure and function, low space utilization and large unlocking impact force in the prior art are solved.

[0007] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0008] A large aspect ratio longitudinal folding wing locking and unlocking device, comprising a piston cylinder, a piston device, an initial locking mechanism, a position locking mechanism, a transmission adapter component and a driving mechanism;

[0009] The piston cylinder comprises a piston cylinder body, a first sealing structure and a cylinder cover, the first sealing structure is arranged in the piston cylinder body, and the cylinder cover is installed at one end of the piston cylinder body;

[0010] The piston device is slidably arranged in the piston cylinder and comprises a piston rod, a second sealing structure and a limiting block, the second sealing structure is arranged on the piston rod, and the limiting block is arranged at one end of the piston rod in the piston cylinder body;

[0011] The initial locking mechanism comprises a locking pin, a first compression spring, a third sealing structure and a baffle, the third sealing structure is arranged on the locking pin, one end of the first compression spring abuts against the locking pin, and the other end abuts against the baffle; the baffle is installed on the side surface of the piston cylinder body; and the piston rod is provided with a locking pin hole matched with the locking pin;

[0012] The initial locking mechanism adopts a spring locking pin type structure, is unlocked by driving the locking pin to move through gunpowder gas, avoids using a shearing pin mechanism, reduces the initial unlocking force, further reduces the charge amount of the gunpowder, and achieves the purposes of large initial locking force and small unlocking impact force.

[0013] The position locking mechanism comprises a floating piston, a second compression spring and a steel ball, one end of the piston rod is provided with a second cylinder, the position locking mechanism is arranged in the second cylinder, one end of the second compression spring abuts against the piston rod, and the other end abuts against the floating piston, the steel ball is slidably arranged on the circumferential side of the floating piston, and the position locking mechanism is limited by the limiting block;

[0014] The transmission adapter component is connected to one end of the piston rod outside the piston cylinder body;

[0015] The driving mechanism is connected to the side surface of the piston cylinder body.

[0016] Preferably, a round hole is formed in the side wall of the piston cylinder body, the locking pin is fixed in the piston cylinder body through the round hole, and the baffle is installed on the side wall of the piston cylinder body through a screw.

[0017] Preferably, the locking pin is a hollow column, a first guide rod is arranged in the hollow cavity, the first compression spring is sleeved on the first guide rod, one end of the first compression spring abuts against the rear end of the locking pin, and the other end abuts against the baffle; and a locking pin shaft is arranged at the front end of the locking pin.

[0018] Preferably, the bottom of the piston-cylinder is provided with a square boss, and the driving mechanism is arranged in the square boss; the first sealing structure is arranged at the outlet of the piston-cylinder, a limiting surface is arranged near the outlet in the piston-cylinder, and a steel ball locking ring groove is arranged at one end near the cylinder cover. The piston-cylinder is the installation body of the locking and unlocking device, and provides an installation interface and a bearing support for other structure modules.

[0019] Preferably, the front section of the piston rod is sequentially provided with a first external thread and a positioning boss, and the rear section includes a first cylindrical section and a second cylindrical section coaxial with each other; the second cylindrical section has a diameter greater than that of the first cylindrical section.

[0020] The lock pin hole transversely penetrates the second cylindrical section, one end of the lock pin hole is connected with the locking pin, and the other end is connected with a gas passage;

[0021] The outer surface of the second cylindrical section is further provided with a second sealing ring groove and a plurality of steel ball holes, the second cylindrical section is internally provided with an internal thread, and the limiting block is provided with a second external thread and is threadedly connected with the second cylindrical section.

[0022] Preferably, the in-place locking mechanism is arranged in the second cylindrical section of the piston rod, and the floating piston includes a cylindrical guide section and a conical inclined section.

[0023] The cylindrical guide section is a hollow cylindrical structure, internally provided with a second guide rod, and the second compression spring is sleeved on the second guide rod.

[0024] The steel ball is placed on the conical inclined section and is embedded in the steel ball hole of the piston rod.

[0025] The limiting block constrains the in-place locking mechanism in the piston rod.

[0026] The in-place locking mechanism adopts a steel ball type locking structure, has the characteristics of simple structure, small locking gap and large locking force. At the same time, through reasonable structural design, the function of manual unlocking can be realized, the unlocking force is small, and the unlocking operation is convenient.

[0027] Preferably, a metal buffer pad is arranged between the cylinder cover and the piston rod, and a trapezoidal weakening groove is arranged around the side of the metal buffer pad, which is beneficial to material deformation and energy absorption under the action of impact load, and significantly reduces the collision impact force at the moment when the locking and unlocking device moves to the position.

[0028] Preferably, the transmission adapter component includes a connecting rod and a nut assembly.

[0029] A square positioning hole is arranged in the middle of the connecting rod, the connecting rod is installed and matched with the positioning boss of the piston rod through the square positioning hole, and ears with rotating shaft holes are arranged on both sides of the connecting rod.

[0030] The nut assembly is connected with the first external thread of the piston rod.

[0031] Preferably, the driving mechanism is a gas generator;

[0032] The gas generator is arranged in the middle of the square boss and is connected to the gas channel. The gas generator is the power source for releasing the initial locking mechanism and driving the piston device. The driving energy source is selected as a gas generator, which has the advantages of small volume and large unlocking force, avoiding the use of large and complex mechanisms such as motors, electromagnets or hydraulic cylinders. The number of gas generators is one group, which can simultaneously achieve the functions of unlocking the initial locking device and driving the piston device.

[0033] Preferably, the installation cavities of the first compression spring and the second compression spring are isolated from the gas action cavities, and the spring force is not affected by the high-temperature gas pressure.

[0034] Preferably, the first guide rod is provided with an unlocking hole at the end, which is used for realizing the manual unlocking function of the initial locking mechanism.

[0035] Preferably, the first sealing structure, the second sealing structure and the third sealing structure all adopt the form of sealing ring and sealing groove cooperation to realize the sealing in the piston cylinder.

[0036] Compared with the prior art, the above technical solutions based on the inventive concept can achieve the following

[0037] Beneficial effects:

[0038] 1. The locking and unlocking device implements the integrated design idea, the structure function combination, and the combination of multiple functions such as initial locking and unlocking of the wing, driving movement and in-place locking, solves the problem of single function of the current locking device. At the same time, it can also realize the functions of manual unlocking, driving movement and automatic locking in place of the locking and unlocking device, and the installation, debugging and service processing are convenient.

[0039] 2. The initial locking mechanism adopts a spring locking pin structure, which is driven by the gas to unlock the locking pin, avoiding the use of shear pins and other mechanisms, reducing the initial unlocking force, further reducing the charge amount of the powder, and achieving the purpose of large initial locking force and small unlocking impact force.

[0040] 3. The metal buffer pad in-place buffer device is provided, and a trapezoidal weakening groove is arranged on the side of the metal buffer pad, which is beneficial to the material deformation and energy absorption under the impact load, significantly reduces the collision impact force at the moment when the locking and unlocking device moves to the position, and is beneficial to maintaining the stability of the missile flight attitude.

[0041] 4. The locking and unlocking device is arranged in the same direction as the folding direction of the wing assembly and located on the same plane, and adopts the form of tension to drive the wing to unfold, which does not occupy the internal space of the missile body, shortens the installation space of the wing assembly in the axial direction of the missile body, and improves the aerodynamic performance of the missile.

[0042] 5. The folding wing locking and unlocking device has simple structure, compact size, easy operation, and easy realization of manual or automatic unlocking, driving and locking functions, and small wing unfolding locking gap. It is especially suitable for locking and unlocking device of large aspect ratio folding wing of cruise missile. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 is the exploded view of the folding wing locking and unlocking device in the embodiment of the present application;

[0044] Figure 2 is the front view of the folding wing locking and unlocking device in the initial locking state in the embodiment of the present application;

[0045] Figure 3 is the partial sectional view of the folding wing locking and unlocking device in the initial locking state in the embodiment of the present application;

[0046] Figure 4 is the partial sectional view of the folding wing locking and unlocking device in the initial locking state in the embodiment of the present application;

[0047] Figure 5 is the exploded view of the folding wing locking and unlocking device and the wing assembly in the embodiment of the present application;

[0048] In all the drawings, the same reference signs are used to represent the same elements or structures, wherein:

[0049] 1 - piston cylinder, 1a - screw hole, 1c - first sealing ring groove, 1d - limiting surface, 1e - steel ball locking ring groove, 2 - first sealing ring, 3 - metal buffer pad, 4 - cylinder cover, 5 - set screw, 6 - piston rod, 6a - positioning boss, 6b - first external thread, 6c - first cylindrical section, 6d - second cylindrical section, 6e - locking pin hole, 6f - limiting plane, 6g - gas passage, 6h - second sealing ring groove, 6i - steel ball hole, 6j - internal thread, 7 - second sealing ring, 8 - limiting nut, 9 - locking pin, 9a - locking pin shaft, 9b - third sealing ring groove, 9c - first guide rod, 9d - unlocking hole, 10 - first compression spring, 11 - third sealing ring, 12 - baffle, 13 - countersunk screw, 14 - floating piston, 14a - conical inclined section, 14b - cylindrical guide section, 14c - second guide rod, 15 - second compression spring, 16 - steel ball, 17 - connecting rod, 17a - lug, 17b - square positioning hole, 18 - nut assembly, 19 - gas generator, 20 - wing, 21 - connecting rod, 22 - rotating shaft mechanism. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0051] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and the "head", "front end", "front" of a component are on the left, and the "tail", "tail end", "rear" are on the right, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms "first", "second", "third" and "fourth" in the specification and claims of the present application are used to distinguish different objects, not to describe a particular order.

[0052] As shown in Figures 1-4 , an embodiment of the present application is a large aspect ratio longitudinal folding wing locking and unlocking device, which comprises a piston cylinder, a piston device, an initial locking mechanism, a position locking mechanism, a transmission adapter component and a driving mechanism.

[0053] As shown in Figure 1 , 3 , specifically, the piston cylinder comprises a piston cylinder body 1, a first sealing structure (a first sealing ring 2 and a first sealing ring groove 1c), a metal buffer pad 3, a cylinder cover 4 and a tight screw 5. The screw hole 1a and the square boss provided on the piston cylinder body 1 are the mechanical interface for connecting the piston cylinder and the projectile, and the square boss cooperates with the corresponding hole position on the projectile to play the role of installation positioning, bearing and transmitting the impact load generated by the propellant gas;

[0054] The cylinder cover 4 is installed at one end of the piston cylinder body 1, and the other end of the piston cylinder body 1 is an opening. The first sealing ring groove 1c is provided at the opening, and the first sealing ring 2 is arranged in the first sealing ring groove 1c on the piston cylinder body 1. The first sealing ring 2 is in contact with the piston rod 6 to achieve sealing.

[0055] A limiting surface 1d is provided on the middle annular cavity of the piston cylinder body 1, and a steel ball locking ring groove 1e is provided in the rear end annular cavity. The metal buffer pad 3 is made of aluminum alloy and is transitionally fitted on the inside of the cylinder cover 4. A trapezoidal weakening groove is provided on one side of the metal buffer pad 3, which is beneficial to the material deformation and energy absorption under the action of impact load. The cylinder cover 4 is installed at the end of the piston cylinder body 1 by the tight screw 5.

[0056] The piston device is a driving mechanism of the locking and unlocking device, which is slidingly installed in the piston cylinder, and a specific movement stroke is designed according to the unfolding angle of the wing 20.

[0057] As shown in Figure 1 , 3 , specifically, the piston device comprises a piston rod 6, a second sealing structure (a second sealing ring 7 and a second sealing ring groove 6h) and a limiting block. The front end of the piston rod 6 is provided with a positioning boss 6a and a first external thread 6b, and the main body part is composed of a first cylindrical segment 6c and a second cylindrical cylinder 6d, which are coaxial, and the diameter of the second cylindrical cylinder 6d is larger than that of the first cylindrical segment 6c. The front end of the second cylindrical cylinder 6d is transversely provided with a locking pin hole 6e, one end of which is connected with the locking pin 9, and the end is provided with a limiting plane 6f, and the other end is connected with a gas passage 6g;

[0058] The middle part of the second cylindrical cylinder 6d is provided with the second sealing ring groove 6h and a plurality of steel ball holes 6i, and the rear end is provided with an internal thread 6j in the cylindrical inner cavity. The second sealing ring 7 is installed in the second sealing ring groove 6h on the piston rod 6. The limiting block is specifically a limiting nut 8, which is installed at the rear end internal thread 6j of the piston rod 6 through the second external thread thereon.

[0059] Because the diameter of the second cylindrical cylinder 6d is large, it is limited by the limiting plane 1d in the piston cylinder body 1, and the piston rod 6 cannot slide forward after reaching the limiting position.

[0060] The function of the initial locking mechanism is to lock the piston rod 6 in the initial state, and to release the constraint on the piston rod 6 under the action of gas pressure, which has the characteristics of large locking force and small unlocking force.

[0061] As shown in Figure 1 , 3 , specifically, the initial locking mechanism comprises a locking pin 9, a first compression spring 10, a third sealing structure (a third sealing ring 11 and a third sealing ring groove 9b), a baffle 12 and a countersunk screw 13. The front end of the locking pin 9 is provided with a locking pin shaft 9a, the middle part is hollow columnar, the outer surface is provided with a third sealing ring groove 9b, the inner cavity is provided with a first guide rod 9c, and the end of the first guide rod 9c is provided with an unlocking hole 9d. The third sealing ring 11 is installed in the third sealing ring groove 9b on the locking pin 9. The first compression spring 10 is arranged in the cavity of the locking pin 9, is sleeved on the first guide rod 9c, is guided and supported by the first guide rod 9c, one end of which acts on the rear end of the locking pin 9, and the other end acts on the baffle 12, which is installed on the side wall of the piston cylinder body 1 through a plurality of countersunk screws 13.

[0062] The function of the in-place locking mechanism is to reliably lock the piston rod 6 after the piston rod 6 moves to the position, which adopts a steel ball 16 type locking mechanism and has the characteristic of large locking force.

[0063] like Figure 1 , 3 As shown in Figure 4, specifically, the locking mechanism includes a floating piston 14, a second compression spring 15, and a steel ball 16. The floating piston 14 includes a cylindrical guide section 14b and a tapered inclined section 14a. The cylindrical guide section 14b has a hollow cylindrical structure inside and is provided with a second guide rod 14c. The second compression spring 15 is sleeved on the second guide rod 14c.

[0064] The steel ball 16 is placed on the tapered inclined section 14a and simultaneously fitted into the steel ball hole 6i of the piston rod 6, and is squeezed and constrained by the inner wall of the piston cylinder 1.

[0065] The locking mechanism is located inside the second cylindrical tube 6d at the rear end of the piston rod 61. The second compression spring 15, the floating piston 14, and the steel ball 16 are installed in sequence, and the locking mechanism is constrained inside the piston rod 6 by the limit nut 8.

[0066] like Figure 1 , 3 As shown in Figure 4, the transmission transition component is the connection interface between the locking / unlocking device and the projectile wing 20, and consists of a connecting rod 17 and a nut assembly 18. The connecting rod 17 is installed and engaged with the positioning boss 6a at the front end of the piston rod 6 through the square positioning hole 17b in its middle, which serves to position and restrict the rotation of the connecting rod 17. Finally, it is pre-tightened to the first external thread 6b on the piston rod 6 by the nut assembly 18. The connecting rod 17 is hinged to the connecting rod 21 through the lugs 17a with pivot holes at both ends.

[0067] The drive mechanism is specifically the gas generator 19, such as Figure 2 , 3 As shown, Figure 3 for Figure 2 The image is a top-down view, specifically a cross-sectional view of surface AA. The gas generator 19 is directly connected to the gas passage 6g, which in turn connects to the locking pin hole 6e, allowing the gas generated by the gas generator 19 to enter the locking pin hole 6e. The gas generator 19 is threaded onto the center of the square boss on the bottom side of the piston cylinder 1, serving as the power source for releasing the initial locking mechanism and driving the piston device. The gas generator 19 is a pyrotechnic component; upon receiving an ignition signal, the gunpowder in the chamber ignites, generating high-temperature, high-pressure gas. The gas generator 19 is connected to the gas passage 6g, and the high-temperature, high-pressure gas first enters the gas passage 6g and then enters the locking pin hole 6e. The locking mechanism is located in the inner cavity of the rear end of the piston rod 6, and then together with the piston device, it is located in the inner cavity of the piston cylinder, forming a sliding pair connection. The initial locking mechanism is located on the left side of the piston cylinder. The gas generator 19 is located on the bottom side of the front end of the piston cylinder. The transmission adapter is located at the front end of the piston device. Various structural components with different functions are modularly arranged on the piston cylinder, resulting in a simple and compact structure.

[0068] Referring to Figure 5 , the layout of the large-aspect-ratio longitudinal unfolding wings of the embodiment of the application is shown in the figure, and the wings 20 are unfolded in the direction opposite to the wind. The wings 20 are hinged to the front end transmission adapter of the locking and unlocking device through the connecting rod 21, and when the piston rod 6 moves, the two wings 20 are simultaneously pulled to rotate around the rotating shaft mechanism 22 through the connecting rod 21. After the wings 20 are unfolded to the position, the in-position locking mechanism locks the piston rod 6, and the movement of the piston rod 6 is restricted to constrain the wings 20, and no additional locking mechanism needs to be arranged.

[0069] The locking and unlocking device is arranged in the same direction as the folding direction of the wing assembly and located on the same plane, and adopts the form of tension to drive the wings to unfold, does not occupy the internal space of the missile body, and has high utilization rate of the height and axial space of the missile body and good aerodynamic performance of the missile.

[0070] The working principle of the folding wing locking and unlocking device provided by the application is as follows:

[0071] In the storage and transportation state and the state of hanging on the machine, the inside of the locking and unlocking device constitutes a sealed cavity through the first sealing ring 2, the second sealing ring 7 and the third sealing ring 11. The locking pin 9 is inserted into the corresponding locking pin hole 6e of the piston rod 6 and is limited by the limiting surface 6f, so that the piston rod 6 is in the initial state of being stretched out and locked. Under the pre-tightening force of the first compression spring 10, the locking pin 9 will not exit the locking pin hole 6e. At this time, the steel ball 16 is constrained by the inner wall of the piston cylinder 1 and contacts the conical inclined section 14a of the floating piston 14, thereby limiting the axial movement of the floating piston 14, so that the second compression spring 15 is in the state of being compressed and stored energy, and the movement stroke of the second compression spring 15 is reserved between the floating piston 14 and the limiting nut 8.

[0072] When the missile is launched, the control system sends a wing 20 unlocking instruction, the gas generator 19 works to generate high-pressure gas, the high-pressure gas enters the locking pin hole 6e through the gas passage 6g, acts on the front end surface of the locking pin 9, pushes the locking pin 9 to move backward against the force of the first compression spring 10, and releases the constraint on the piston rod 6. At the same time, the high-pressure gas enters the piston cylinder cavity to drive the piston rod 6 to move backward at high speed until the piston rod 6 collides with the metal buffer pad 3. At the same time, the steel ball 16 moves to the steel ball locking ring groove 1e in the piston cylinder 1, the steel ball 16 gradually enters the ring groove, the pressure on the conical inclined section 14a begins to decrease, the second compression spring 15 begins to release the pre-tightening pressure, and the floating piston 14 is pushed to move, and then the steel ball 16 is extruded into the steel ball locking ring groove 1e through the steel ball hole 6i, so that the piston rod 6 and the piston cylinder 1 are locked in position.

[0073] When manual unlocking is needed in daily installation, debugging or service treatment, the locking pin 9 is pulled out of the locking pin hole 6e on the piston rod 6 from the unlocking hole 9d at the rear end of the locking pin 9 by using a wire hook, and then the piston rod 6 is manually pushed to move. After locking in place, the radial constraint of the steel ball 16 is removed by pushing the floating piston 14 from the center circular hole of the cylinder cover 4 using a tool, and then the connecting rod 17 is manually pulled to move. The locking and unlocking device can simply realize initial unlocking and in-place unlocking, and is convenient for ground debugging multiple times.

[0074] Those skilled in the art will easily understand that the above description is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high aspect ratio longitudinal fold wing locking and unlocking device, characterized by, The piston cylinder, piston device, initial locking mechanism, in-place locking mechanism, transmission adapter component and driving mechanism are included. The piston cylinder includes a piston cylinder body, a first sealing structure and a cylinder cover, the first sealing structure is arranged in the piston cylinder body, and the cylinder cover is installed at one end of the piston cylinder body. The piston device is slidably arranged in the piston cylinder and includes a piston rod, a second sealing structure and a limiting block, the second sealing structure is arranged on the piston rod, and the limiting block is arranged at one end of the piston rod in the piston cylinder body. The initial locking mechanism includes a locking pin, a first compression spring, a third sealing structure and a baffle, the third sealing structure is arranged on the locking pin, one end of the first compression spring is abutted against the locking pin, and the other end is abutted against the baffle, the baffle is fixedly installed on the side wall of the piston cylinder body, and the piston rod is provided with a locking pin hole matched with the locking pin. The in-place locking mechanism includes a floating piston, a second compression spring and a steel ball, one end of the piston rod is provided with a second cylinder, the in-place locking mechanism is arranged in the cavity of the second cylinder, one end of the second compression spring is abutted against the piston rod, and the other end is abutted against the floating piston, the steel ball is slidably arranged on the side of the floating piston, and the limiting block limits the in-place locking mechanism, and the piston cylinder body is provided with a steel ball locking ring groove at one end close to the cylinder cover. The transmission adapter component is connected to one end of the piston rod outside the piston cylinder body. The driving mechanism is connected to the side wall of the piston cylinder body.

2. A high aspect ratio longitudinal folding wing locking and unlocking device according to claim 1, characterized in that, A round hole is formed in the side wall of the piston cylinder body, the locking pin is fixed in the piston cylinder body through the round hole, and the baffle is installed on the side wall of the piston cylinder body through a screw.

3. A high aspect ratio longitudinal folding wing locking and unlocking device according to claim 2, characterized in that, The locking pin is a hollow column, a first guide rod is arranged in the hollow cavity, the first compression spring is sleeved on the first guide rod, one end of the first compression spring is abutted against the rear end of the locking pin, and the other end is abutted against the baffle, and a locking pin shaft is arranged at the front end of the locking pin.

4. A high aspect ratio longitudinal folding wing locking and unlocking device according to claim 1, characterized in that, A square boss is arranged at the bottom of the piston cylinder body, the driving mechanism is arranged in the square boss, the first sealing structure is arranged at the outlet of the piston cylinder body, and a limiting surface is arranged in the piston cylinder body.

5. A high aspect ratio longitudinal folding wing locking and unlocking device according to claim 1, characterized in that, A first external thread and a positioning boss are sequentially arranged on the front section of the piston rod, and a first cylinder section and a second cylinder are sequentially arranged on the rear section of the piston rod, the diameter of the second cylinder is greater than that of the first cylinder section. The locking pin hole transversely penetrates the second cylinder, one end of the locking pin hole is connected with the locking pin, and the other end is connected with a gas channel. A second sealing ring groove and a plurality of steel ball holes are further arranged on the outer surface of the second cylinder, the second cylinder is provided with an internal thread, the limiting block is provided with a second external thread, and the limiting block is threadedly connected with the second cylinder.

6. A high aspect ratio longitudinal folding wing locking and unlocking device according to claim 5, characterized in that The in-place locking mechanism is arranged in the second cylinder of the piston rod, and the floating piston includes a cylindrical guide section and a conical inclined section. The cylindrical guide section is a hollow cylindrical structure, a second guide rod is arranged in the cylindrical guide section, and the second compression spring is sleeved on the second guide rod. The steel ball is arranged on the conical inclined section, and the steel ball is embedded in the steel ball hole of the piston rod. The limiting block restricts the in-place locking mechanism in the piston rod.

7. A high aspect ratio longitudinal folding wing locking and unlocking device according to claim 1, characterized in that, A metal buffer pad is arranged between the cylinder cover and the piston rod, and a trapezoidal weakening groove is arranged around the side of the metal buffer pad.

8. A high aspect ratio longitudinal folding wing locking and unlocking device according to claim 5, characterized in that, The transmission adapter component includes a connecting rod and a nut assembly. The connecting rod middle part is provided with a square positioning hole, the connecting rod is installed and matched with the positioning boss of the piston rod through the square positioning hole; the connecting rod two sides are provided with the supporting lug with the rotating shaft hole; The nut assembly is connected to the first external thread of the piston rod.

9. A high aspect ratio longitudinal folding wing locking and unlocking device according to claim 4, characterized in that, The driving mechanism is a gas generator. The gas generator is arranged in the middle part of the square boss, and the gas generator is connected to the gas passage.

10. A high aspect ratio longitudinal folding wing locking and unlocking device according to claim 3, characterized in that, The first guide rod end is provided with an unlocking hole.

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