Cross-moving device for short-distance movement of unmanned aerial vehicle in hangar and transfer method thereof

Abstract

Provided are a horizontal moving device for short-distance movement of a UAV in a hangar and a transfer method thereof, comprising a bracket for accommodating and limiting the wheels of the UAV, both ends of the bracket being fixed with mounting racks, one of the mounting racks being provided with a traction device for pulling or pushing the device, the bottom of each mounting rack being provided with a heavy load caster for supporting movement of the device, and the mounting rack being provided with a direction locking mechanism, and the heavy load caster being connected or separated from the direction locking mechanism by controlling the state of the direction locking mechanism, so as to limit or release the rotation freedom of the heavy load caster. By means of the V-shaped clamping groove and the caster capable of quickly switching the locking mode, the UAV can be stably placed on the device after being jacked up, flexible turning, directional movement and rotation in place of the UAV in a narrow space are realized, and the problems of damage to the UAV and low transfer efficiency in the process of traditional manual pushing or simple tool movement are effectively solved. The device has the advantages of simple structure, easy operation, reliable bearing, high safety, etc.

Description

Technical Field

[0001] This invention belongs to the technical field of UAV ground support equipment, specifically relating to a lateral movement device and its transfer method for short-distance movement of UAVs within a hangar. Background Technology

[0002] In existing technologies, when drones are parked or maintained in hangars, short-distance position adjustments (such as forward / backward, left / right, or rotation) are required. Due to the weight of drones and the limited space in hangars, traditional moving methods rely on large traction equipment or pushing, which suffers from complex operation, low efficiency, and poor safety. Furthermore, large equipment occupies a lot of space and is difficult to adapt to confined environments, while pushing can easily cause wheel wear or drone tilting, posing safety hazards. Therefore, there is an urgent need for a compact, easy-to-operate lateral movement device adapted to the characteristics of drone wheels to solve the problem of efficient and safe movement of drones within hangars. Summary of the Invention

[0003] The technical problem solved by this invention is to provide a lateral movement device and its transfer method for short-distance movement of drones in a hangar. By setting V-shaped slots and casters that can quickly switch locking modes, the drone can be stably placed on the device after being lifted, enabling the drone to flexibly turn, move in a direction, and rotate in place in a confined space. This effectively solves the problems of drone damage and low transfer efficiency that occur when moving drones manually or with simple tools. The device has a simple structure, is easy to operate, has reliable load-bearing capacity, and is highly safe.

[0004] The technical solution adopted in this invention is a transfer method for short-distance movement of drones within a hangar, comprising the following steps: 1) Use a jack to lift the drone so that the height of the wheels off the ground is greater than the height of the lateral movement device; wherein, the lateral movement device includes a bracket and a mounting frame with heavy-duty casters installed at the bottom and fixed to both ends of the bracket. The heavy-duty casters are either directional wheels or omnidirectional wheels and are controlled by a directional locking mechanism on the mounting frame. 2) Based on the desired direction of drone movement, analyze and determine the required movement mode of the drone. According to the required movement mode, lock or unlock the heavy-duty casters at the bottom of the lateral movement device by adjusting the locking mechanisms of each direction on the lateral movement device, and adjust the heavy-duty casters to the directional wheel mode or omnidirectional wheel mode of the corresponding mode. 3) Push the same number of lateral movement devices as the drone wheels under the corresponding wheels, and align the wheels with the V-shaped slots in the middle of the bracket on the lateral movement device below, ensuring that the rolling direction of the heavy-duty casters is consistent with the desired movement direction; 4) Use the jack to slowly lower the drone until the wheels are fully supported by the lateral movement device, and ensure that the wheels are in the center of the V-shaped slot; 5) By using the traction device on the traverse device, push or pull the traverse device to move the UAV in the desired direction.

[0005] In step 2) above, the direction locking mechanism includes a fixed plate fixed to the outer edge of the middle of the mounting bracket, a rocker arm rotatably mounted on the fixed plate, an elliptical cam coaxially connected to the inner end of the rocker arm, a handle mounted on the outer end of the rocker arm, and a pin axially sliding and elastically mounted on the bottom vertical plate of the mounting bracket. The end of the pin facing the cam is adapted to the U-shaped groove on the cam wheel surface, while the end of the pin facing the heavy-duty caster is inserted into the positioning hole on the heavy-duty caster. A spring I is fitted on the handle against the rocker arm and the fixed plate, and a spring II is fitted on the pin against the upper end of the heavy-duty caster. The locking or unlocking process of the direction locking mechanism for the heavy-duty caster is as follows: 21) When the heavy-duty caster is in directional wheel mode, pull the handle outward until the end of the handle is disengaged from the unlocking positioning hole on the fixed plate. Then, rotate the rocker arm with the handle until the end of the handle corresponds to the locking positioning hole. Release the handle, and the end of the handle will be inserted into the locking positioning hole under the rebound force of spring I. During this process, the cam rotates from a horizontal position on the short shaft to a horizontal position on the long shaft, so that the cam pushes the pins on both sides to slide axially in the positioning hole until the rotating shaft inside the heavy-duty caster is pressed. At this time, spring II is compressed, and the rotation direction of the heavy-duty caster is locked in directional wheel mode. 22) When the heavy-duty caster is in swivel wheel mode, pull the handle outward until the end of the handle disengages from the locking positioning hole on the fixed plate. Then, rotate the rocker arm with the handle until the end of the handle aligns with the unlocking positioning hole. Release the handle, and the end of the handle will be inserted into the unlocking positioning hole under the return force of spring I. During this process, the cam rotates from a horizontal position on the long axis to a horizontal position on the short axis. Under the return force of spring II, the pin slides axially in the positioning hole to a position away from the pivot inside the heavy-duty caster. At this time, spring II returns to its original position, and the rotation direction of the heavy-duty caster is locked in swivel wheel mode.

[0006] In step 2) above, the required movement modes include straight-line movement mode and flexible turning mode; when the drone needs to rotate in place or make a small-radius turn, the heavy-duty casters corresponding to each wheel are unlocked to omnidirectional wheel mode; when the drone needs to move in a fixed direction, some or all of the heavy-duty casters are locked to directional wheel mode.

[0007] A lateral movement device for short-distance movement of drones within a hangar includes a bracket for accommodating and limiting the drone's wheels. Mounting frames are fixed at both ends of the bracket, and one of the mounting frames is equipped with a traction device for pulling or pushing the device. Heavy-duty casters for supporting the movement of the device are installed at the bottom of each mounting frame, and a directional locking mechanism is provided on the mounting frame. By controlling the connection or separation of the directional locking mechanism with the heavy-duty casters, the rotational freedom of the heavy-duty casters can be restricted or released.

[0008] The direction locking mechanism includes a pin, a cam, a fixed plate, and a rocker arm. The fixed plate is L-shaped and its upper end is mounted and fixed to the middle of the outer wall of the mounting frame. The cam is located below the mounting frame and is coaxially connected to the inner end of the rocker arm, which is rotatably mounted on the fixed plate. A vertical plate on the outer side of the cam is fixed to the bottom of the mounting frame. The middle part of the pin slides axially and is elastically mounted on the vertical plate. One end of the pin slides into a U-shaped groove on the cam wheel surface, while the other end of the pin is fitted into a positioning hole on the heavy-duty caster. The rocker arm has an L-shaped shaft structure and drives the cam to rotate by rotating the rocker arm, whose vertical section is located outside the mounting frame. The cam drives the pin to extend and press against the rotating shaft inside the heavy-duty caster or retract to its original position, thereby locking the rotation direction of the heavy-duty caster.

[0009] Furthermore, the cam is an elliptical wheel. When the major axis of the cam is in a horizontal state, the cam drives the pin to extend and press against the rotating shaft inside the heavy-duty caster. When the minor axis of the cam is in a horizontal state, the pin retracts and moves away from the rotating shaft inside the heavy-duty caster.

[0010] Furthermore, both sides of the lower end of the vertical section of the rocker arm are provided with milled planes, and the small diameter section of the handle is provided through the through hole on the milled plane. The spring I provided on the inner side of the vertical section of the rocker arm is fitted onto the small diameter section of the handle, and the two ends of the spring I abut against the milled plane on the inner side of the lower end of the vertical section of the rocker arm and the stepped surface of the inner end of the convex ring of the small diameter section of the handle, respectively. The vertical plate of the fixing plate is provided with locking positioning holes and unlocking positioning holes distributed at 90° with the rocker arm rotation axis as the center. When the cam is locked or unlocked, the convex ring at the inner end of the small diameter section of the handle is adapted to the locking positioning hole or the unlocking positioning hole.

[0011] Furthermore, the pin has a stepped structure with a central diameter larger than the diameters at both ends, and the end of the pin that fits into the U-shaped groove has a spherical structure. A spring II is fitted on the small diameter section of the pin away from the U-shaped groove, which abuts against the vertical plate.

[0012] Furthermore, the bracket is a welded structure formed by welding rectangular tubes on both sides and V-shaped steel plates with folded edges on both sides, with a V-shaped groove in the middle. The bottom of the steel plate is provided with multiple reinforcing ribs that are fixedly connected to the folded edges.

[0013] Furthermore, the traction device is an automatically retractable tensioner.

[0014] Advantages of this invention compared to existing technologies: 1. This technical solution uses a bracket with a V-shaped groove in the middle, which can form a reliable constraint on the drone wheels with automatic centering and double-sided limiting, avoiding wheel deviation, tipping or local stress wear during transportation. At the same time, the overall bending resistance and load-bearing capacity are improved by the rectangular tube frame and the bottom reinforcing ribs of the steel plate, which can be adapted to the stable bearing of drones, are not easily deformed after long-term use, and significantly improve transportation safety and structural durability. 2. This technical solution uses the rotation of an elliptical cam to drive the rotation of a pin, which in turn drives the heavy-duty casters to switch between directional and omnidirectional modes. This allows the casters to maintain a stable direction of travel and avoid deviation when moving in a straight line, while also enabling small-radius turning and rotation in place within a confined hangar space. This meets the multi-directional adjustment needs of drones in small spaces and significantly improves the flexibility and applicability of short-distance transport within the hangar. 3. This technical solution only requires a 90° rotation of the rocker arm to lock and unlock the heavy-duty casters. It is simple and labor-saving to operate and responds quickly. By setting locking and unlocking positioning holes that are adapted to the inner end of the handle that is elastically installed on the rocker arm, it can effectively prevent accidental loosening or mis-switching of the equipment during movement and vibration. The locked state is stable and reliable, which greatly improves the safety of use. 4. This technical solution has a simple structure and reasonable design. The retractable pull rope does not occupy extra space and does not interfere with hangar operations. The equipment can be easily pushed under the wheels for use. A single person can control the movement direction of the drone. The layout is flexible and the operation is efficient, which significantly reduces the manpower and equipment costs of drone ground transportation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram showing the positional relationship of the directional locking mechanism of the present invention when locking the heavy-duty caster; Figure 3 This is a schematic diagram showing the positional relationship of the directional locking mechanism of the present invention when unlocking the heavy-duty caster; Figure 4 This is a structural schematic diagram of the handle position of the present invention; Figure 5 This is a schematic diagram of the pin and cam structure of the present invention; Figure 6 This is a schematic diagram of the operation process of the present invention. Detailed Implementation

[0016] The following will be based on embodiments of the present invention. Figure 1-6The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0017] It should be noted that, unless otherwise stated herein, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0019] A transfer method for short-distance movement of drones within a hangar includes the following steps: 1) Use a jack to lift the drone until the height of the wheels 6 off the ground is greater than the height of the lateral movement device; wherein, the lateral movement device includes a bracket 2 and a mounting frame 5 with heavy-duty casters 4 fixed at both ends of the bracket 2 and installed at the bottom. The directional or omnidirectional casters 4 are controlled by a directional locking mechanism 3 provided on the mounting frame 5. 2) Based on the desired direction of drone movement, analyze and determine the required movement mode of the drone. According to the required movement mode, lock or unlock the heavy-duty casters 4 at the bottom of the lateral movement device by adjusting the locking mechanisms 3 of each direction on the lateral movement device, and adjust the heavy-duty casters 4 to the directional wheel mode or the universal wheel mode of the corresponding mode. The directional locking mechanism 3 includes a fixed plate 303 fixed to the outer edge of the middle part of the mounting bracket 5, a rocker arm 304 rotatably mounted on the fixed plate 303, an elliptical cam 302 coaxially connected to the inner end of the rocker arm 304, a handle 306 mounted on the outer end of the rocker arm 304, and a pin 301 axially sliding and elastically mounted on the bottom vertical plate 305 of the mounting bracket 5. The end of the pin 301 facing the cam 302 is adapted to the U-shaped groove 311 on the wheel surface of the cam 302, while the end of the pin 301 facing the heavy-duty caster 4 is inserted into the positioning hole 401 on the heavy-duty caster 4. A spring I 307 is fitted on the handle 306 to abut against the rocker arm 304 and the fixed plate 303, and a spring II 310 is fitted on the pin 301 to abut against the upper end of the heavy-duty caster 4. The locking or unlocking process of the directional locking mechanism 3 for the heavy-duty caster 4 is as follows: 21) When the heavy-duty caster 4 is in the fixed wheel mode, after pulling the handle 306 outward until the end of the handle 306 is disengaged from the unlocking positioning hole 309 on the fixed plate 303, rotate the rocker arm 304 through the handle 306 until the end of the handle 306 corresponds to the position of the locking positioning hole 308. Release the handle 306, and the end of the handle 306 is inserted into the locking positioning hole 308 under the rebound force of the spring I 307. During this process, the cam 302 rotates from the state where the short shaft is in the horizontal position to the state where the long shaft is in the horizontal position, so that the cam 302 pushes the pins 301 on both sides to slide axially in the positioning hole 401 until the rotating shaft inside the heavy-duty caster 4 is pressed. At this time, the spring II 310 is compressed, and the rotation direction of the heavy-duty caster 4 is locked in the fixed wheel mode. 22) When the heavy-duty caster 4 is in swivel wheel mode, pull the handle 306 outward until the end of the handle 306 disengages from the locking positioning hole 308 on the fixed plate 303. Then, rotate the rocker arm 304 through the handle 306 until the end of the handle 306 corresponds to the unlocking positioning hole 309. Release the handle 306, and the end of the handle 306 is inserted into the unlocking positioning hole 309 under the restoring force of the spring I 307. During this process, the cam 302 rotates from a horizontal position on the long axis to a horizontal position on the short axis. Under the restoring force of the spring II 310, the pin 301 slides axially in the positioning hole 401 away from the pivot inside the heavy-duty caster 4. At this time, the spring II 310 returns to its original position, and the rotation direction of the heavy-duty caster 4 is locked in swivel wheel mode. The spring I 307 is used to apply a spring force to the handle 306 so that it is engaged in the corresponding positioning hole, while the spring II 310 is used to return the pin 301 to its original position. The required movement modes include a straight-line movement mode and a flexible turning mode; when the drone needs to rotate in place or make a small-radius turn, the heavy-duty casters 4 corresponding to each wheel 6 are unlocked into omnidirectional wheel mode; when the drone needs to move in a fixed direction, some or all of the heavy-duty casters 4 are locked into directional wheel mode. 3) Push the same number of lateral movement devices as the drone wheels 6 under the corresponding wheels 6, and align the wheels 6 with and let them fall into the V-shaped slots 203 in the middle of the bracket 2 on the lower lateral movement device, ensuring that the rolling direction of the heavy-duty casters 4 is consistent with the desired movement direction; 4) Operate the jack to slowly lower the drone until the wheel 6 is fully supported by the lateral movement device, and ensure that the wheel 6 falls into the center of the V-shaped slot 203; 5) By using the traction device on the traverse device, push or pull the traverse device to move the UAV in the desired direction.

[0020] A lateral movement device for short-distance movement of drones within a hangar includes a bracket 2 for accommodating and limiting the drone's wheels 6. Mounting frames 5 are fixed to both ends of the bracket 2, and one of the mounting frames 5 is equipped with a traction device 1 for pulling or pushing the device. Each mounting frame 5 has heavy-duty casters 4 mounted at its bottom to support the movement of the device. A directional locking mechanism 3 is also provided on each mounting frame 5. By controlling the connection or separation of the directional locking mechanism 3 with the heavy-duty casters 4, the rotational freedom of the heavy-duty casters 4 can be restricted or released. At least three heavy-duty casters 4 are provided; however, in this embodiment, two heavy-duty casters 4 are symmetrically arranged at the bottom of the mounting frame 5, for a total of four. The direction locking mechanism 3 includes a pin 301, a cam 302, a fixing plate 303, and a rocker arm 304. The fixing plate 303 is an L-shaped plate, and its upper end is hung and fixed to the middle of the outer wall of the mounting frame 5. The cam 302 is located below the mounting frame 5 and is coaxially connected to the inner end of the rocker arm 304, which is rotatably mounted on the fixing plate 303. A bushing is fixed in the through hole on the surface of the fixing plate 303, and the rocker arm 304 is rotatably connected to the fixing plate 303 through a bearing installed in the bushing. The square head of the inner end of the rocker arm 304 is adapted to connect with the square hole in the center of the cam 302. A vertical plate 305 is provided on the outer side of the cam 302 and fixed to the bottom of the mounting frame 5. The middle part of the pin 301 slides axially and is elastically mounted on the vertical plate 305. One end of the pin 301 slides into the U-shaped groove 311 on the wheel surface of the cam 302, while the other end of the pin 301 is fitted into the positioning hole 401 on the heavy-duty caster 4. The rocker arm 304 has an L-shaped shaft structure, and the cam 302 is driven to rotate by rotating the rocker arm 304, whose vertical section is located outside the mounting bracket 5. The cam 302 drives the pin 301 to extend and press against the rotating shaft inside the heavy-duty caster 4 or retract to return to its original position, thereby locking the rotation direction of the heavy-duty caster 4. In the above structure, when the pin 301 is inserted into the positioning hole 401 and presses against the rotating shaft inside the heavy-duty caster 4, it restricts the rotational freedom of the corresponding heavy-duty caster 4, making it a directional wheel. When the pin 301 moves away from the rotating shaft, it releases the rotational freedom of the corresponding heavy-duty caster 4, making it a swivel wheel. The cam 302 is an elliptical wheel. When the major axis of the cam 302 is in a horizontal state, the cam 302 drives the pin 301 to extend and press against the rotating shaft inside the heavy-duty caster 4. When the minor axis of the cam 302 is in a horizontal state, the pin 301 retracts away from the rotating shaft inside the heavy-duty caster 4. In the above structure, the rotation of the elliptical cam 302 drives the pin 301 to switch the heavy-duty caster 4 between the directional wheel and the universal wheel mode. This can maintain a stable direction of travel and prevent deviation when moving in a straight line, and can also achieve small-radius turning and rotation in place in a narrow hangar space. This meets the multi-directional adjustment needs of UAVs in small spaces and greatly improves the flexibility and applicability of short-distance transportation in the hangar. The lower side walls of the vertical section of the rocker arm 304 are provided with milled surfaces, and the small-diameter section of the handle 306 passes through a through hole on the milled surface. A spring I 307, located inside the vertical section of the rocker arm 304, is fitted onto the small-diameter section of the handle 306, with both ends of the spring I 307 abutting against the milled surface on the inner side of the lower end of the vertical section of the rocker arm 304 and the stepped surface of the inner end ring of the small-diameter section of the handle 306, respectively. The vertical plate of the fixing plate 303 has locking and unlocking positioning holes 308 and 309 distributed at 90° intervals around the rotation axis of the rocker arm 304. When the cam 302 is locked or unlocked, the handle 306... The convex ring at the inner end of the small diameter section is adapted to the locking positioning hole 308 or the unlocking positioning hole 309; the pin 301 is always tangent to the U-shaped groove 306 under the action of the spring I 307; in the above structure, the locking and unlocking of the heavy-duty caster 4 can be completed by rotating the rocker arm 304 by only 90°. The operation is simple and labor-saving, and the action response is fast. By setting the locking positioning hole 308 and the unlocking positioning hole 309 adapted to the inner end of the handle 306 elastically installed on the rocker arm 304, the accidental loosening or mis-switching of the equipment during movement and vibration can be effectively avoided. The locking state is stable and reliable, which greatly improves the safety of use. The pin 301 has a stepped structure with a central diameter larger than the diameters at both ends. The end of the pin 301 that fits into the U-shaped groove 311 is spherical. A spring II 310 is fitted on the small diameter section of the pin 301 away from the U-shaped groove 311, abutting against the vertical plate 305. In the above structure, when the handle 306 is in the vertical position, the pin 301 moves away from the internal shaft of the heavy-duty caster 4 under the action of the spring I 307, releasing the rotational freedom of the corresponding heavy-duty caster 4 and putting it in omnidirectional wheel mode. When the handle 306 rotates from the vertical position to the horizontal position, the pin 301 abuts against the internal shaft of the heavy-duty caster 4 under the action of the cam 302, restricting the rotational freedom of the corresponding heavy-duty caster 4 and putting it in directional wheel mode, ensuring the accuracy of linear movement.

[0021] The bracket 2 is a welded structure consisting of rectangular tubes 201 on both sides and V-shaped steel plates 202 with folded edges on both sides, forming a V-shaped groove 203 in the middle. The bottom of the steel plate is provided with multiple reinforcing ribs that are fixedly connected to the folded edges. In the above structure, the bracket with a V-shaped groove 203 in the middle can form a reliable constraint for the drone's wheels, which can automatically center and limit the movement on both sides, avoiding problems such as wheel deviation, tipping, or localized stress and wear during transportation. At the same time, the overall bending resistance and load-bearing capacity are improved by the rectangular tube frame 201 and the bottom reinforcing ribs of the steel plate 202. It can be adapted to the stable bearing of the drone, is not easily deformed after long-term use, and significantly improves the transportation safety and structural durability. The traction device 1 is an automatically retractable tensioner, specifically an automatic retraction tensioner or a wire rope tensioner. The automatic retraction tensioner or wire rope tensioner (which is a finished product and will not be described in detail here) is fixed to the mounting frame 5 by a support. When in use, the pull rope is adjusted to the required length and then fixed. The device is moved by pulling the pull rope. When not in use, it can be unlocked and automatically retracted.

[0022] This technical solution has a simple structure and reasonable design. The retractable pull rope 101 does not occupy extra space and does not interfere with hangar operations. The equipment can be easily pushed under the wheels for use. A single person can control the movement direction of the drone. The layout is flexible and the operation is efficient, significantly reducing the manpower and equipment costs of drone ground transportation.

[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A transfer method for short-distance movement of unmanned aerial vehicles (UAVs) within a hangar, characterized in that... Includes the following steps: 1) Use a jack to lift the drone until the height of the wheels (6) above the ground is greater than the height of the lateral movement device; wherein, the lateral movement device includes a bracket (2) and a mounting frame (5) with heavy-duty casters (4) fixed at both ends of the bracket (2). The directional wheel or omnidirectional wheel mode of the heavy-duty casters (4) is controlled by a direction locking mechanism (3) provided on the mounting frame (5); 2) Based on the desired direction of drone movement, analyze and determine the required movement mode of the drone. Based on the required movement mode, lock or unlock the heavy-duty casters (4) at the bottom of the lateral movement device by adjusting the locking mechanisms (3) of each direction on the lateral movement device, and adjust the heavy-duty casters (4) to the directional wheel mode or the universal wheel mode of the corresponding mode. 3) Push the same number of lateral movement devices as the drone wheels (6) under the corresponding wheels (6), and make the wheels (6) align and fall into the V-shaped slot (203) in the middle of the bracket (2) on the lateral movement device below, to ensure that the rolling direction of the heavy-duty casters (4) is consistent with the desired movement direction; 4) Operate the jack to slowly lower the drone until the wheel (6) is fully supported by the lateral movement device, and ensure that the wheel (6) falls into the center of the V-shaped slot (203) for positioning of the wheel (6); 5) By using the traction device on the traverse device, push or pull the traverse device to move the UAV in the desired direction.

2. The transfer method for short-distance movement of UAVs within a hangar according to claim 1, characterized in that: In step 2) above, the direction locking mechanism (3) includes a fixed plate (303) fixed to the outer edge of the middle part of the mounting bracket (5), a rocker arm (304) rotatably mounted on the fixed plate (303), an elliptical cam (302) coaxially connected to the inner end of the rocker arm (304), a handle (306) mounted on the outer end of the rocker arm (304), and a pin (301) axially sliding and elastically mounted on the bottom vertical plate (305) of the mounting bracket (5). The pin (301) faces the cam (302). One end of the cam (302) is fitted with the U-shaped groove (311) on the wheel surface, and the pin (301) is inserted into the positioning hole (401) on the heavy-duty caster (4) facing the heavy-duty caster (4); a spring I (307) is fitted on the handle (306) and abuts against the rocker arm (304) and the fixing plate (303), and a spring II (310) is fitted on the pin (301) and abuts against the upper end of the heavy-duty caster (4). The locking or unlocking process of the direction locking mechanism (3) on the heavy-duty caster (4) is as follows: 21) When the heavy-duty caster (4) is in the fixed wheel mode, hold the handle (306) and pull it outward until the end of the handle (306) is disengaged from the unlocking positioning hole (309) on the fixed plate (303). Then, rotate the rocker arm (304) through the handle (306) until the end of the handle (306) corresponds to the position of the locking positioning hole (308). Release the handle (306), and the end of the handle (306) is inserted into the locking positioning hole (308) under the rebound force of the spring I (307). During this process, the cam (302) rotates from the state where the short axis is in the horizontal position to the state where the long axis is in the horizontal position, so that the cam (302) pushes the pins (301) on both sides to slide axially in the positioning hole (401) until the rotating shaft inside the heavy-duty caster (4) is pressed. At this time, the spring II (310) is compressed, and the rotation direction of the heavy-duty caster (4) is locked in the fixed wheel mode. 22) When the heavy-duty caster (4) is in universal wheel mode, hold the handle (306) and pull it outward until the end of the handle (306) is disengaged from the locking positioning hole (308) on the fixed plate (303). Then, rotate the rocker arm (304) through the handle (306) until the end of the handle (306) corresponds to the position of the unlocking positioning hole (309). Release the handle (306), and the end of the handle (306) is inserted into the unlocking positioning hole (309) under the rebound force of spring I (307). During this process, the cam (302) rotates from the state where the long axis is in a horizontal position to the state where the short axis is in a horizontal position. Under the rebound force of spring II (310), the pin (301) slides axially in the positioning hole (401) away from the pivot inside the heavy-duty caster (4). At this time, spring II (310) resets, and the rotation direction of the heavy-duty caster (4) is locked in universal wheel mode.

3. The transfer method for short-distance movement of UAVs within a hangar according to claim 1, characterized in that: In step 2) above, the required movement mode includes a straight movement mode and a flexible turning mode; when the UAV needs to rotate in place or turn with a small radius, the heavy-duty casters (4) corresponding to each wheel (6) are unlocked to the universal wheel mode; when the UAV needs to move in a fixed direction, some or all of the heavy-duty casters (4) are locked to the directional wheel mode.

4. A lateral movement device for short-distance movement of unmanned aerial vehicles (UAVs) within a hangar, characterized in that: The device includes a bracket (2) for accommodating and limiting the wheels (6) of the drone. The bracket (2) has mounting frames (5) fixed at both ends. One of the mounting frames (5) is equipped with a traction device (1) for pulling or pushing the device. The bottom of each mounting frame (5) is equipped with heavy-duty casters (4) for supporting the movement of the device. The mounting frame (5) is equipped with a directional locking mechanism (3). By controlling the connection or separation state between the directional locking mechanism (3) and the heavy-duty casters (4), the rotational freedom of the heavy-duty casters (4) can be restricted or released.

5. The lateral movement device for short-distance movement of UAVs within a hangar according to claim 4, characterized in that: The direction locking mechanism (3) includes a pin (301), a cam (302), a fixing plate (303), and a rocker arm (304). The fixing plate (303) is an L-shaped plate, and its upper end is hung and fixed to the middle of the outer wall of the mounting bracket (5). The cam (302) is located below the mounting bracket (5) and is coaxially connected to the inner end of the rocker arm (304) which is rotatably mounted on the fixing plate (303). The vertical plate (305) provided on the outer side of the cam (302) is fixed to the bottom of the mounting bracket (5). The middle part of the pin (301) slides axially and springs back. The pin (301) is mounted on the vertical plate (305), and one end of the pin (301) is slidably adapted to the U-shaped groove (311) on the wheel surface of the cam (302), while the other end of the pin (301) is adapted to the positioning hole (401) on the heavy-duty caster (4). The rocker arm (304) has an L-shaped shaft structure, and the cam (302) is driven to rotate by rotating the rocker arm (304) located outside the mounting bracket (5). The cam (302) drives the pin (301) to extend and press against the rotating shaft inside the heavy-duty caster (4) or retract to return to its original position, thereby locking the rotation direction of the heavy-duty caster (4).

6. The lateral movement device for short-distance movement of UAVs within a hangar according to claim 5, characterized in that: The cam (302) is an elliptical wheel. When the major axis of the cam (302) is in a horizontal state, the cam (302) drives the pin (301) to extend and press against the rotating shaft inside the heavy-duty caster (4). When the minor axis of the cam (302) is in a horizontal state, the pin (301) retracts away from the rotating shaft inside the heavy-duty caster (4).

7. The lateral movement device for short-distance movement of UAVs within a hangar according to claim 6, characterized in that: The lower end of the vertical section of the rocker arm (304) is provided with milled surfaces on both sides, and the small diameter section of the handle (306) passes through the through hole on the milled surface. The spring I (307) provided on the inner side of the vertical section of the rocker arm (304) is fitted onto the small diameter section of the handle (306), and the two ends of the spring I (307) abut against the milled surface on the inner side of the lower end of the vertical section of the rocker arm (304) and the stepped surface of the inner end of the convex ring of the small diameter section of the handle (306), respectively. The vertical plate of the fixing plate (303) is provided with locking positioning holes (308) and unlocking positioning holes (309) distributed at 90° with the rotation axis of the rocker arm (304) as the center. When the cam (302) is locked or unlocked, the convex ring of the inner end of the small diameter section of the handle (306) is adapted to the locking positioning hole (308) or the unlocking positioning hole (309).

8. The lateral movement device for short-distance movement of UAVs within a hangar according to claim 7, characterized in that: The pin (301) has a stepped structure with a diameter in the middle larger than that at both ends. The end of the pin (301) that is adapted to the U-shaped groove (311) is a spherical structure. A spring II (310) is fitted on the small diameter section of the pin (301) away from the U-shaped groove (311) and abuts against the vertical plate (305).

9. The lateral movement device for short-distance movement of UAVs within a hangar according to claim 4, characterized in that: The bracket (2) is a welded structure formed by welding rectangular tubes (201) on both sides and V-shaped steel plates (202) with folded edges on both sides, with a V-shaped groove (203) in the middle. The bottom of the steel plate is provided with multiple reinforcing ribs that are fixedly connected to the folded edges.

10. The lateral movement device for short-distance movement of UAVs within a hangar according to claim 4, characterized in that: The traction device (1) is an automatically retractable tensioner.

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