CN115367099A - Lockpin linear driving device for aircraft wing folding system - Google Patents

Abstract

This application discloses a lock pin linear drive device for the aircraft wing folding system. The other end of the pin protrudes out of the housing, and the housing is provided with a locking mechanism, which is used to lock the limit position of the lock pin. This application has the advantages of increased locking function, double insurance, and improved safety.

Description

A locking pin linear drive device for aircraft wing folding system

technical field

The present application relates to the technical field of aircraft wing folding systems, in particular to a locking pin linear drive device used in the aircraft wing folding system.

Background technique

The footprint of an aircraft on the ground largely depends on the size of the wings. In order to save space, it has become a conventional engineering solution to design the wings in a foldable form. Wing folding technology can effectively shorten the The wingspan of the aircraft and the improvement of its storage and transportation performance are not only of great significance for the use of carrier-based aircraft, but also have potential value for the daily maintenance and storage of some civil aircraft. During the folding process of the aircraft wing, the movable section and the fixed section of the wing are connected by hinges and can be rotated relatively. The movable section and the fixed section make the whole wing a whole, so as to ensure the realization of various functions of the wing during flight.

The locking pin linear drive device is the main part of the locking pin mechanism in the aircraft wing folding system. Its main function is to drive the locking pin to extend and retract, so as to realize the position locking and unlocking movement between the wing parts. However, the existing lock pin linear drive device only relies on the drive mechanism to lock the limit position of the lock pin, which places a heavy burden on the drive mechanism. If the drive mechanism breaks down, the locking function will easily fail, lacking the insurance function, and posing safety hazards.

Contents of the invention

The main purpose of the present application is to provide a lock pin linear drive device for the aircraft wing folding system, aiming at solving the technical problems that the existing lock pin linear drive device is prone to failure of the locking function and low safety when the fault occurs.

In order to achieve the above purpose, the application provides a lock pin linear drive device for the aircraft wing folding system, including a housing, a lock pin is arranged in the housing, and a drive mechanism is connected to one end of the lock pin, and the drive mechanism is used to drive the lock pin Linear movement, the other end of the lock pin moves out of the housing, the housing is provided with a locking mechanism, the locking mechanism is used to lock the limit position of the lock pin.

Optionally, the locking mechanism includes an extension shell arranged on the outer wall of the housing, and a stop pin perpendicular to the axis of the lock pin is arranged in the extension shell, and positioning pins that cooperate with the stop pin are respectively provided at the two extreme positions of the lock pin on the outer wall of the lock pin. The pin hole, a control assembly is also arranged in the extension shell, and the control assembly is used to control the stop pin to be inserted into or pulled out of the corresponding positioning pin hole.

Optionally, the control assembly includes an electromagnet movably sleeved on the stop pin, the end of the stop pin away from the lock pin is connected with an armature, and the armature is used to generate magnetic attraction with the electromagnet, and the other end of the armature is connected with a tension spring to stretch The other end of the spring is connected to the inner wall of the extension shell on the side away from the lock pin.

Optionally, a first accommodating chamber and a second accommodating chamber are provided in the extension shell, the first accommodating chamber is located between the lock pin and the second accommodating chamber, the electromagnet is located in the first accommodating chamber, the armature and the extension spring are both located in the In the second accommodating cavity, the stop pin moves through the first accommodating cavity and the second accommodating cavity.

Optionally, a sliding guide sleeve is provided on the inner wall of the housing, and the sliding guide sleeve is movably sleeved on the lock pin, and a retaining ring is also movably sleeved on the locking pin, and the retaining ring is attached to an end of the sliding guide sleeve close to the opening of the housing; Wherein, the opening of the housing is used for the locking pin to protrude.

Optionally, the drive mechanism includes a drive motor arranged on the housing, the drive motor is connected to a worm and worm gear assembly located in the housing, the worm and worm gear assembly is connected to a conversion assembly, the other end of the conversion assembly is connected to the lock pin, and the conversion assembly is used to convert the worm The rotary motion of the worm gear assembly is converted into linear motion of the locking pin.

Optionally, the conversion assembly includes a screw that can move linearly in the housing. A connecting pin is connected between one end of the screw and one end of the locking pin. The inner wall of the housing is provided with a guiding linear groove that cooperates with the connecting pin. The length direction of the guiding linear groove is In the same direction as the length of the screw, a nut is threaded on the other side of the screw, and the nut is connected with the worm and worm gear assembly.

Optionally, the worm and worm gear assembly includes a worm shaft. One end of the worm shaft is connected to the output shaft of the drive motor through a coupling. The worm shaft is meshed with a worm gear. The worm gear is movably connected to the inner wall of the housing, and the worm gear is fixedly sleeved on the nut.

Optionally, the worm shaft is connected with an extension rod, and the extension rod moves out of the casing.

Optionally, the extension rod has a polygonal cross section.

The beneficial effect that this application can realize is as follows:

This application adds a locking mechanism, which can lock the limit position of the lock pin, and cooperates with the limit locking function of the driving mechanism itself to improve the reliability of the locking structure. Even if the driving mechanism breaks down and loses the self-locking function, it can Relying on the locking mechanism to continue to maintain the locking function of the lock pin, thus having the effect of double insurance and improving safety. At the same time, only the locking mechanism can be used to lock the lock pin. Power state, thereby reducing the burden on the drive mechanism when it needs to maintain power when it realizes self-locking, thereby reducing the failure rate of the drive mechanism and improving system security.

Description of drawings

In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the specific implementation modes or the prior art. Throughout the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, elements or parts are not necessarily drawn in actual scale.

Fig. 1 is a schematic structural view of a locking pin linear drive device used in an aircraft wing folding system in an embodiment of the present application;

FIG. 2 is a structural schematic diagram of another cross-sectional direction of a locking pin linear drive device used in an aircraft wing folding system in an embodiment of the present application.

Reference signs:

110-housing, 111-guiding linear groove, 120-lock pin, 121-locating pin hole, 130-locking mechanism, 131-extension shell, 132-stop pin, 133-control assembly, 1331-electromagnet, 1332-armature , 1333-tension spring, 140-guide sleeve, 150-retaining ring, 160-drive motor, 170-worm gear assembly, 171-worm shaft, 172-worm gear, 173-extension rod, 180-conversion assembly, 181- Screw, 182-connecting pin, 183-nut, 190-coupling, 210-flat key, 220-upper bearing, 230-lower bearing, 240-bearing end cover, 250-front bearing, 260-rear bearing, 270- Back cover, 280-sealing ring.

The realization, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement between the various components in a certain posture Situations, etc., if the specific posture changes, the directional indication also changes accordingly.

In this application, unless otherwise clearly specified and limited, the terms "connection" and "fixation" should be interpreted in a broad sense, for example, "fixation" can be a fixed connection, a detachable connection, or an integral body; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes, and cannot be interpreted as indications or hints Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of "and/or" appearing in the whole text includes three parallel schemes, taking "A and/or B" as an example, including scheme A, scheme B, or schemes that both A and B satisfy. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present application.

Example

Referring to Fig. 1-Fig. 2, the present embodiment provides a lock pin linear drive device for the aircraft wing folding system, including a housing 110, a lock pin 120 is arranged in the housing 110, and one end of the lock pin 120 is connected with a drive mechanism , the driving mechanism is used to drive the lock pin 120 to move linearly, and the other end of the lock pin 120 extends out of the housing 110. The housing 110 is provided with a locking mechanism 130, which is used to lock the limit position of the lock pin 120.

Since the prior art adopts the self-locking effect of the driving mechanism to keep the lock pin 120 locked, it needs the driving mechanism to keep the energized state continuously, which is a big burden on the driving mechanism, thus increasing its failure rate. Once the driving mechanism If a failure occurs, causing the locking function of the locking pin 120 to fail, it will easily lead to safety problems during the operation of the aircraft wing folding system. Therefore, in this embodiment, by adding the locking mechanism 130, the limit position of the lock pin 120 can be locked, and in conjunction with the limit locking function of the driving mechanism itself, the reliability of the locking structure is improved. Failure to lose the self-locking function can also rely on the locking mechanism 130 to continue to maintain the locking function of the lock pin 120, thereby having the effect of double insurance and improving safety. When locked, the driving mechanism can be in a power-off state, thereby reducing the burden on the driving mechanism when it needs to keep the power on when it realizes self-locking, thereby reducing the failure rate of the driving mechanism and improving system security.

It should be noted that the end of the locking pin 120 protruding from the housing 110 is provided with a tapered surface, and the tapered surface acts as a guide when inserted into the locking hole of the wing folding mechanism.

As an optional embodiment, the locking mechanism 130 includes an extension shell 131 arranged on the outer wall of the housing 110, and a stop pin 132 perpendicular to the axis of the lock pin 120 is arranged inside the extension shell 131, and the outer wall of the lock pin 120 corresponds to two sides of the lock pin 120. Positioning pin holes 121 cooperating with stop pins 132 are opened at each limit position, and a control assembly 133 is also provided in the extension shell 131, and the control assembly 133 is used to control the stop pin 132 to be inserted into or pulled out of the corresponding positioning pin holes 121.

In this embodiment, the stop pins 132 can be respectively inserted into the positioning pin holes 121 at the corresponding limit positions of the two lock pins 120, so that the lock pins 120 can be locked when they are stretched out to the limit position or retracted to the limit position. The assembly 133 is used to control the insertion or extraction of the stop pin 132 , which is efficient in operation and easy to operate, thereby realizing the locking and unlocking functions of the position of the locking pin 120 .

As an optional embodiment, the control assembly 133 includes an electromagnet 1331 movably sleeved on the stop pin 132, and the end of the stop pin 132 away from the lock pin 120 is connected with an armature 1332, and the armature 1332 is used to generate magnetism with the electromagnet 1331. Adsorption, the other end of the armature 1332 is connected to a tension spring 1333 , and the other end of the tension spring 1333 is connected to the inner wall of the extension shell 131 away from the locking pin 120 .

In this embodiment, the electromagnet 1331 is a device that generates electromagnetism when it is energized. A conductive winding that matches its power is wound outside the iron core. , when the electromagnet 1331 is energized, it will generate magnetic attraction to the armature 1332, so that the armature 1332 is close to the electromagnet 1331, thereby driving the stop pin 132 to move towards the direction close to the lock pin 120, until the stop pin 132 is inserted into the positioning pin hole of the lock pin 120 Inside 121, the automatic locking of the lock pin 120 is realized. When it needs to be unlocked, the electromagnet 1331 is powered off and loses its magnetic force, and the armature 1332 and the stop pin 132 reset under the tension of the tension spring 1333, thereby pulling out the lock pin 120. The positioning pin hole 121 realizes the automatic unlocking of the locking pin 120, so that the locking pin 120 can freely extend or shrink on the housing 110, and the operation is convenient and quick. Here tension spring 1333 (also called tension spring, referred to as tension spring) is a helical spring bearing axial tension. Tension spring 1333 is generally made of a circular cross-section material. There are generally no gaps between them. In addition, the electromagnet 1331 here is a circular sleeve structure. When it is movably sleeved on the stop pin 132, it does not affect the movement of the stop pin 132. At the same time, it has a guiding effect on the movement of the stop pin 132, so that the stop pin 132 can be stabilized. To do linear motion, kill two birds with one stone. Here, the stop pin 132 should be made of a material that does not generate magnetic attraction with the electromagnet 1331, so as to ensure its normal operation.

It should be noted that the electromagnet 1331 and the driving mechanism can be powered separately by the power supply system on the aircraft. When the driving mechanism breaks down, the locking and unlocking of the locking pin 120 can also be controlled by turning on and off the electromagnet 1331. Therefore, Here the control assembly 133 adopts the electromagnet 1331 structure instead of using ordinary telescopic oil cylinders or other telescopic parts to drive the linear movement of the stop pin 132, because the ordinary telescopic parts need to reserve the stroke space when the moving parts move, which increases the volume of the device , it is inconvenient to assemble with the aircraft wing, and the assembly is difficult. Therefore, the control assembly 133 with a compact electromagnet 1331 structure has a short movement stroke and a small overall volume, which is more conducive to the adaptability of the aircraft wing system; at the same time, When a power failure occurs, the electromagnet 1331 will automatically cut off the power to unlock the lock pin 120 to prevent locking, and when a failure occurs with an ordinary telescopic component, it will directly cause locking and affect normal operation. Therefore, this embodiment uses an electromagnet The control assembly 133 with 1331 structure has better adaptability.

As an optional implementation, the extension shell 131 is provided with a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is located between the lock pin 120 and the second accommodating cavity, and the electromagnet 1331 is located in the first accommodating cavity , the armature 1332 and the tension spring 1333 are located in the second accommodation chamber, and the stop pin 132 moves through the first accommodation chamber and the second accommodation chamber.

In this embodiment, by setting the electromagnet 1331 in the first accommodation chamber, the armature 1332 and the tension spring 1333 in the second accommodation chamber, and the first accommodation chamber and the second accommodation chamber are independent of each other, so that the armature 1332 can slide in the second accommodating cavity, which is equivalent to the movement of the piston, and improves the guiding effect on the stop pin 132 .

It should be noted that the extension shell 131 here can be a detachable assembly mechanism, that is, the extension shell 131 includes a first shell integrally connected with the shell, and the other end of the first shell is detachably connected with a second shell through bolts, then the first accommodating cavity Then in the first shell, the second accommodating cavity is in the second shell, which is convenient for assembly and disassembly, and reduces manufacturing difficulty.

As an optional embodiment, the inner wall of the housing 110 is provided with a sliding guide sleeve 140, the sliding guide sleeve 140 is movably sleeved on the lock pin 120, and a retaining ring 150 is movably sleeved on the lock pin 120, and the retaining ring 150 is attached to The sliding guide sleeve 140 is close to the opening end of the housing 110 ; wherein, the opening of the housing 110 is used for the locking pin 120 to protrude.

In this embodiment, when the locking pin 120 moves linearly, it can slide stably under the guidance of the sliding guide sleeve 140 to ensure stable and reliable movement and accurate positioning. It should be noted that the sliding guide sleeve 140 is made of copper alloy or other wear-resistant materials. The sliding guide sleeve 140 can be installed in a through hole in the front of the housing 110 through its outer circle. There is a through hole in the middle of the sliding guide sleeve 140. The diameter of the outer circle of the lock pin 120 is the same as the diameter of the inner through hole of the guide sleeve 140, and the lock pin 120 passes through the hole to form a clearance fit. When working, the lock pin 120 can move forward and backward in the middle through hole of the guide sleeve 140. There is an annular groove at the front end of the hole, and a built-in sealing ring 280 to prevent the leakage of lubricating oil in the housing 110. There are steps on the inner wall of the housing 110 to limit the displacement of the guide sleeve 140. At the same time, a stopper is installed at the front end of the guide sleeve 140. The ring 150 is used for position limiting, the structure is compact, and the operation is stable.

It should be noted that the sliding guide bush 140 can be a ball guide bush, which has low friction, small resistance, stable operation and good guiding performance.

Because the drive part of the lock pin linear drive device in the prior art adopts hydraulic cylinder technology, not only need to arrange hydraulic pipelines and valves on the wing, the installation and maintenance of the system is complicated; and due to the structural characteristics of the hydraulic cylinder, the piston return The power of the lock pin 120 is relatively small, so the thrust and pull force for driving the lock pin 120 to stretch out and retreat are inconsistent, and the phenomenon that the lock pin 120 cannot be retracted is prone to occur during operation.

Therefore, as an optional embodiment, the driving mechanism includes a driving motor 160 disposed on the housing 110, the driving motor 160 is connected with a worm and worm gear assembly 170 located in the housing 110, and the worm and worm gear assembly 170 is connected with a conversion assembly 180 , the other end of the conversion assembly 180 is connected to the lock pin 120 , and the conversion assembly 180 is used to convert the rotary motion of the worm gear assembly 170 into the linear motion of the lock pin 120 . The conversion assembly 180 includes a screw rod 181 that can move linearly in the housing 110. A connecting pin 182 is connected between one end of the screw rod 181 and one end of the lock pin 120. The inner wall of the housing 110 is provided with a guiding linear groove 111 that matches the connecting pin 182. The length direction of the guide linear groove 111 is the same as the length direction of the screw rod 181 , and the other side of the screw rod 181 is threaded with a nut 183 , and the nut 183 is connected with the worm gear assembly 170 . The worm and worm gear assembly 170 includes a worm shaft 171. One end of the worm shaft 171 is connected to the output shaft of the drive motor 160 through a coupling 190. The worm shaft 171 is meshed with a worm wheel 172. The worm wheel 172 is movably connected to the inner wall of the housing 110, and the worm wheel 172 is fixed. Sleeve on the nut 183 .

In this embodiment, during operation, when the output shaft of the drive motor 160 rotates, the coupling 190 drives the worm shaft 171 to rotate, and the worm shaft 171 drives the worm wheel 172 to rotate through gear meshing transmission, thereby driving the nut fixedly connected to the worm wheel 172 183 rotation, when the nut 183 rotates, because the screw rod 181 will not rotate thereupon under the limiting effect of the connecting pin 182, thereby converting the rotational motion of the nut 183 into the linear motion of the screw rod 181, at this moment, the connecting pin 182 is in the The guide slides in the linear groove 111 to realize the linear movement of the locking pin 120 . The advantages of worm and worm gear transmission are compact structure and large transmission ratio, which can increase the motor speed and reduce the volume of the device; at the same time, worm and worm gear transmission has self-locking characteristics, and the lock pin 120 will not move due to external factors such as vibration after it is in place. It can improve the working reliability of the lock pin 120; compared with the hydraulic cylinder, the extension and retraction power of the lock pin 120 is the same, ensuring that the lock pin 120 has a reliable retraction driving force, and the worm gear 172 worm drive can realize self-locking and system reliability high.

It should be noted that the driving motor 160 is a DC motor with a power of 250 watts and a rotation speed of 3000 rpm, which rotates and outputs power when the power supply of the aircraft is driven by the controller;

The output shaft of the DC motor is connected as a whole with the worm shaft 171 below by two flat keys 210 through the coupling 190. The axes of the two shafts are collinear and rotate synchronously during operation, while upper and lower bearings are respectively installed on the worm shaft 171. 220 and the lower bearing 230, the two bearings are supported on a vertical bearing hole of the housing 110 through the outer ring of the bearing, the lower end of the bearing hole is an opening, the opening is provided with a bearing end cover 240, and the bearing end cover 240 is fixed by a spring washer and a bolt At the opening position of the lower end of the housing 110, there is a boss in the middle of the bearing end cover 240, and the outer ring of the lower bearing 230 is in contact with the upper surface of the bearing end cover 240 boss, so the structure is compact and the operation is reliable;

The two ends of the nut 183 are respectively supported on a horizontal bearing hole of the casing 110 through the front bearing 250 and the rear bearing 260. The rear end of the bearing hole is an opening, and the opening is provided with a rear cover 270. The rear cover 270 is installed on At the opening position of the rear end of the bearing hole, there is a through hole in the center of the nut 183. The front part of the through hole has a section of internal thread. There is a hole in the middle of the worm wheel. It is installed on the outer circular surface of the middle part of the nut 183 through the flat key 210. Perpendicular to the axis of the worm shaft 171, the teeth of the worm gear mesh with the worm to transmit motion and drive the nut 183 to rotate;

The screw rod 181 has an external thread on the surface, and the external thread is screwed into the internal thread hole on the nut 183 to form a screw motion pair. The lock pin 120 is cylindrical, and the axis of the lock pin 120 coincides with the axis of the screw rod 181. The lock pin 120 is located in the housing One end in 110 is provided with a counterbore, and screw rod 181 front end has a cylinder, and cylinder is inserted in the counterbore of lock pin 120, and the cylinder of screw rod 181 front end and the counterbore of lock pin 120 rear end all have a The radial hole of the wire, the axes of the two holes coincide, the connecting pin 182 is inserted from the radial hole and passes through the screw rod 181 and the locking pin 120, the lower end surface of the connecting pin 182 is flush with the outer surface of the locking pin 120, and the connecting pin The upper part of 182 protrudes from the outer circular surface of the lock pin 120 and extends into the guide straight groove 111 , the width of the guide straight groove 111 is equal to the diameter of the connecting pin 182 .

In the case of system failure, it is difficult to realize the manual operation of inserting and pulling out the lock pin 120 by using the hydraulic cylinder solution, so that the wings cannot be folded or unfolded, and the folding mechanism must be disassembled as a whole. Therefore, as an optional embodiment, The worm shaft 171 is connected with an extension rod 173, and the extension rod 173 moves out of the casing.

In this embodiment, when the system fails, the extension rod 173 can be rotated from the outside to drive the worm shaft 171 to rotate, and the manual operation of inserting and removing the locking pin 120 can be realized, so as to improve the safety of the system.

As an optional implementation manner, the cross section of the extension rod 173 is polygonal, generally hexagonal, which facilitates cooperation with tools such as wrenches and facilitates operation.

The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structures or equivalent process transformations made by using the description of the application and the accompanying drawings are directly or indirectly used in other related technical fields. , are all included in the patent protection scope of the present application in the same way.

Claims (10)

1. A lock pin linear drive device for the aircraft wing folding system, characterized in that it comprises a housing, the housing is provided with a lock pin, and one end of the lock pin is connected with a drive mechanism, and the drive mechanism is used In order to drive the lock pin to move linearly, the other end of the lock pin moves out of the housing, and the housing is provided with a locking mechanism for locking the limit position of the lock pin. 2. A lock pin linear drive device for an aircraft wing folding system as claimed in claim 1, wherein the locking mechanism comprises an extension shell arranged on the outer wall of the housing, and the inside of the extension shell is A stop pin perpendicular to the axis of the lock pin is provided, and the outer wall of the lock pin is respectively provided with positioning pin holes matching with the stop pin at the two extreme positions of the lock pin, and the extension shell is also provided with A control assembly, the control assembly is used to control the insertion or withdrawal of the stop pin from the corresponding positioning pin hole. 3. A lock pin linear drive device for an aircraft wing folding system as claimed in claim 2, wherein said control assembly includes an electromagnet movably sleeved on said stop pin, said stop pin An armature is connected to the end of the moving pin far away from the lock pin, and the armature is used to generate magnetic adsorption with the electromagnet, and the other end of the armature is connected to a tension spring, and the other end of the tension spring is connected to the extension shell The inner wall on the side away from the locking pin. 4. A lock pin linear drive device for an aircraft wing folding system according to claim 3, wherein a first accommodating cavity and a second accommodating cavity are arranged in the extension shell, and the first accommodating cavity The accommodating cavity is located between the lock pin and the second accommodating cavity, the electromagnet is located in the first accommodating cavity, the armature and the tension spring are both located in the second accommodating cavity, so The stop pin moves through the first accommodation chamber and the second accommodation chamber. 5. A lock pin linear drive device for an aircraft wing folding system according to any one of claims 1 to 4, characterized in that, the inner wall of the housing is provided with a guide slide sleeve, and the guide slide The sleeve is movably sleeved on the lock pin, and a retaining ring is also movably sleeved on the lock pin, and the retaining ring is attached to the end of the sliding guide sleeve close to the opening of the housing; wherein, the housing An opening in the body for the locking pin to protrude from. 6. A lock pin linear drive device for an aircraft wing folding system according to any one of claims 1 to 4, wherein the drive mechanism comprises a drive motor arranged on the housing , the drive motor is connected with a worm and worm gear assembly located in the housing, the worm and worm gear assembly is connected with a conversion assembly, the other end of the conversion assembly is connected with the lock pin, and the conversion assembly is used to convert the worm and worm gear The rotational motion of the assembly is converted into linear motion of the locking pin. 7. A lock pin linear drive device for an aircraft wing folding system as claimed in claim 6, wherein the conversion assembly includes a screw that can move linearly in the housing, one end of the screw and A connecting pin is connected between one end of the lock pin, and the inner wall of the housing is provided with a guiding linear groove that cooperates with the connecting pin. The length direction of the guiding linear groove is the same as the length direction of the screw rod. A nut is threaded on the other side of the screw, and the nut is connected with the worm and worm gear assembly. 8. A lock pin linear drive device for an aircraft wing folding system as claimed in claim 7, wherein said worm and worm gear assembly comprises a worm shaft, and one end of said worm shaft is connected to said worm shaft through a coupling. The output shaft of the drive motor is connected, and the worm shaft is meshed with a worm wheel, the worm wheel is movably connected to the inner wall of the housing, and the worm wheel is fixedly sleeved on the nut. 9 . The locking pin linear drive device for the aircraft wing folding system according to claim 8 , wherein the worm shaft is connected with an extension rod, and the extension rod movably protrudes out of the casing. 10 . 10. A locking pin linear drive device for an aircraft wing folding system according to claim 8, wherein the cross section of the extension rod is polygonal.

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