Convenient puller based on sliding type unmanned aerial vehicle

Abstract

The application discloses a convenient dragging device based on a sliding take-off type unmanned plane, and particularly relates to the field of unmanned plane dragging equipment. The device comprises two load-bearing beams arranged in parallel, universal wheels connected to the two ends of the load-bearing beams, and a roller assembly connected to the load-bearing beams; a rack is fixed at one end of one of the load-bearing beams, and the other end of the rack is sleeved with a sleeve pipe; the sleeve pipe is fixed to the other load-bearing beam, and a through hole is formed in the surface of the sleeve pipe in contact with the teeth of the rack; one end of the sleeve pipe is hingedly connected with a rocking arm with a U-shaped cross section through a first rotating shaft; the sleeve pipe is connected with a torsional spring sleeved on the first rotating shaft through a connecting seat; one end of the torsional spring abuts against the sleeve pipe, and the other end abuts against the rocking arm; a second rotating shaft is rotationally connected with the rocking arm; a connecting arm is connected at one end to the second rotating shaft, and the other end of the connecting arm is connected with a claw hook matched with the rack, and the claw hook is located above the through hole; and a locking mechanism is connected to the second rotating shaft. Through the above-mentioned dragging device, the impact force generated during the dragging process can be reduced to affect the unmanned plane.

Description

Technical Field

[0001] This application relates to the field of drone towing equipment, and more particularly to a convenient towing device for gliding drones. Background Technology

[0002] Runway-type drones accelerate and glide along a runway, resulting in significant tire wear. Once sufficient speed is reached, lift will propel them off the ground. Therefore, protective measures for the drone's tires are crucial to minimize wear. This method is suitable for larger drones, especially fixed-wing drones, as they require sufficient speed to generate lift. Runway-type takeoffs require suitable runways and are therefore typically used in civilian or commercial applications, such as agricultural plant protection and power line inspection.

[0003] Current methods involve using a transport vehicle to connect the drone to a tow bar for ground movement or transport. Traditional tow bars typically require manual connection to specific points on the drone, a cumbersome process involving multiple steps such as insertion, removal, and tightening. During connection and towing, uneven stress on the connection points between the tow bar and the drone can cause pulling, twisting, and other damage to the connection points and surrounding structures. When using a traditional tow bar to tow a drone on uneven surfaces or during emergency braking, the impact force is directly transmitted to the drone, potentially affecting its internal precision electronic equipment or causing structural deformation. Utility Model Content

[0004] The main purpose of this application is to provide a convenient towing device for gliding drones, which aims to solve the problem that existing towing methods are prone to generating impact forces that affect drones during the towing process.

[0005] To achieve the above objectives, this application provides a convenient towing device for a gliding-type unmanned aerial vehicle (UAV), comprising: two parallel load-bearing beams, each end of which is connected to a caster wheel, and roller assemblies connected to the load-bearing beams; a rack, one end of which is fixed to one of the load-bearing beams, and the other end of which is fitted with a sleeve, the sleeve being fixed to the other load-bearing beam, the surface of the sleeve in contact with the teeth of the rack having a through hole; the sleeve can reciprocate along the rack, driving the two roller assemblies to move closer and further apart; one end of the sleeve passes through a first... A rocker arm with a U-shaped cross-section is hinged to a rotating shaft; a torsion spring is sleeved on the first rotating shaft through a connecting seat, with one end of the torsion spring abutting the sleeve and the other end abutting the rocker arm; a second rotating shaft is rotatably connected to the two side walls of the rocker arm at both ends; a connecting arm is connected at one end to the second rotating shaft and located inside the rocker arm, and at the other end is connected to a pawl hook adapted to the rack, with the pawl hook located above the through hole; a locking mechanism is connected to the second rotating shaft, and the locking mechanism drives the pawl hook through the through hole to move closer to or away from the rack.

[0006] Optionally, the roller assembly includes a first roller, which is fixed parallel to the load-bearing beam and connected parallel to a second roller via a connecting rod. The second roller is located below the first roller, and the distance between the two second rollers is less than the distance between the two first rollers.

[0007] Optionally, the sleeve is provided with teeth that mesh with the rack, and the teeth of the sleeve and the rack form a ratchet mechanism, so that the sleeve moves along the rack in a first direction, wherein the first direction is the direction in which the two roller assemblies move away from each other; an elastic layer is provided between the bottom surface of the sleeve and the rack, and the compression distance of the elastic layer is equal to the meshing depth of the sleeve and the rack.

[0008] Optionally, a limit rod rotates on the first rotating shaft. One end of the limit rod is located inside the rocker arm, and the other end is connected to a pawl. The pawl passes through a through hole and forms a ratchet mechanism with the rack. The pawl can move along the rack in the first direction.

[0009] Optionally, the locking mechanism includes a paddle, one end of which is connected to the second rotating shaft and the other end extends out of the bottom of the rocker arm; the paddle drives the second rotating shaft to rotate, causing the pawl to move closer to or away from the rack.

[0010] Optionally, a positioning pin is fixed on the rocker arm, and a retaining ring adapted to the positioning pin is provided on the paddle. When the retaining ring is sleeved on the positioning pin, the pawl hook engages with the rack.

[0011] Optionally, a spring connects the connecting arm and the rocker arm.

[0012] Optionally, a positioning rod is fixed on the outer wall of the sleeve, one end of the torsion spring is connected to the positioning rod, and the other end abuts against the inner side of the rocker arm.

[0013] Optionally, a foot pedal is connected to the free end of the rocker arm.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: This utility model discloses a convenient tower for gliding drones, featuring a rack and pinion and a rocker arm. A claw hook adapted to the rack is mounted on the rocker arm. Through the engagement and release of the teeth, combined with a sleeve, the downward pressure of the rocker arm is converted into linear displacement of the tower, thereby adjusting the lifting and towing state of the roller assembly on the drone tire. The progressive transmission method of the rack and pinion and the claw hook can buffer and absorb some impact force to a certain extent, reducing the impact on the drone. By controlling the movement of the sleeve on the rack through the rocker arm, the roller assembly can be moved closer and further away. Simply pressing down the rocker arm and the locking mechanism to rotate the second shaft is sufficient to support and lower the drone wheels. The operation logic is clear and easy to understand, requiring no complex training; a single person can easily operate it. By using the roller assembly to lift the drone tire, the overall force on the drone is more evenly distributed, maximizing the protection of the drone's original structure from damage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a portable towing device based on a gliding drone according to this application; Figure 2 This is a schematic diagram of the support state of a portable tow device for a gliding UAV according to this application; Figure 3 This is a schematic diagram of the closed state of a convenient tow device based on a gliding drone according to this application.

[0016] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] An embodiment of this utility model provides a convenient towing device based on a gliding drone, such as... Figure 1 As shown, it includes: two parallel load-bearing beams 1, each end of which is connected to a caster wheel 2, and a roller assembly 3 connected to the load-bearing beam 1; a rack 4, one end of which is fixed to one of the load-bearing beams 1, and the other end of which is fitted with a sleeve 5, which is fixed to the other load-bearing beam 1, and the surface of the sleeve 5 in contact with the teeth of the rack 4 has a through hole 6; the sleeve 5 can move along the rack 4 to allow the two roller assemblies 3 to move closer and further apart; one end of the sleeve 5 is hinged to a U-shaped rocker arm 8 via a first rotating shaft 7; the second... A torsion spring 9 is sleeved on a rotating shaft 7. One end of the torsion spring 9 abuts against the sleeve 5, and the other end abuts against the rocker arm 8. A second rotating shaft 10 is rotatably connected to the two side walls of the rocker arm 8 at both ends. A connecting arm 11 is connected to the second rotating shaft 10 at one end and located inside the rocker arm 8. The other end is connected to a claw hook 12 that is adapted to the rack 4. The claw hook 12 can pass through the through hole 6 and engage with the rack 4. A locking mechanism is connected to the second rotating shaft 10. The locking mechanism drives the claw hook 12 to move closer to or away from the rack 4 through the second rotating shaft 10.

[0019] In this embodiment, a telescopic rod mechanism is formed by a rack 4 and a sleeve 5. A roller assembly 3 is connected to the fixed end and the movable end of the telescopic rod, respectively. The extension and retraction of the telescopic rod are controlled by a rocker arm 8, allowing the roller assembly 3 to move closer and further away. Simply pressing down the rocker arm 8 and the locking mechanism to rotate the second rotating shaft 10 is sufficient to support and lower the drone wheels. The operation logic is clear and easy to understand, requiring no complex training, and can be easily operated by a single person. Movement is achieved through omnidirectional wheels, which improves dragging efficiency and saves manpower compared to manual dragging. The toothed design on the rack 4 cooperates with the claw hook 12. Through the engagement and release of the teeth, the pressing action of the rocker arm 8 is converted into the linear displacement of the dragger, thereby adjusting the lifting and dragging state of the roller on the drone tires. The progressive transmission method of the mechanical rack 4 and the claw hook 12 can buffer and absorb some of the impact force to a certain extent, reducing the impact on the drone. A torsion spring 9 is set between the rocker arm 8 and the sleeve 5 to provide tension to the rocker arm 8, allowing the rocker arm 8 to return to its original position. In use, press down on the rocker arm 8 to bring it closer to the sleeve 5, so that the claw hook 12 engages with the rack 4. The claw hook 12 pushes the sleeve 5 to move along the rack 4 in the second direction, so that the two roller assemblies 3 are close together, and the wheels are lifted, thereby achieving stable support and preparation for dragging the UAV.

[0020] It is worth noting that the load-bearing beam 1 includes a first connecting rod 101. The two ends of the first connecting rod 101 are respectively connected to a third connecting rod 103 via a second connecting rod 102. The second connecting rod forms an obtuse angle with the first connecting rod 101 and the third connecting rod 103, that is, the second connecting rod 102 is an inclined rod. The horizontal plane where the third connecting rod 103 is located is higher than the horizontal plane where the first connecting rod 101 is located. The caster wheel 2 is connected below the third connecting rod 103. The rack 4 and the sleeve 5 are both fixed on the second connecting rod 102. The roller assembly 3 is fixed on the first connecting rod 101, which can avoid the influence of the rack 4 and the sleeve 5 on the machine wheel.

[0021] In an exemplary embodiment, the roller assembly 3 includes a first roller 31, which is fixed parallel to the load-bearing beam 1 and connected parallel to a second roller 33 via a connecting rod 32. The second roller is located below the first roller 31, and the distance between the two second rollers 33 is less than the distance between the two first rollers 31. The rocker arm 8 includes a first rocker arm and a second rocker arm. The first rocker arm has a U-shaped cross-section, and both the first rotating shaft 7 and the second rotating shaft 10 are connected to the first rocker arm. The first rocker arm and the second rocker arm form an obtuse angle.

[0022] In this embodiment, the roller assembly 3 supports the drone tire, resulting in more even force distribution on the drone. Combined with the omnidirectional wheels, it provides the tow unit with flexible steering capabilities, adapting to different ground environments and towing direction requirements, facilitating drone movement in confined spaces or complex terrains. The optimized design of the lengths of the first roller 31 and the second roller 33 prevents collisions and wear with protruding parts such as the drone's brake control box, maximizing the protection of the drone's original structure. By gradually bringing the two roller assemblies 3 closer to support the drone tire, the drone is placed in a stable, suspended state, enabling stable towing without the need for additional fixing devices.

[0023] Furthermore, the sleeve 5 is connected to the first rotating shaft 7 via a connecting seat. A positioning rod 13 is fixed on the outer wall of the sleeve 5, and one end of the torsion spring 9 is connected to the positioning rod 13, while the other end abuts against the inner side of the rocker arm 8. The positioning rod 13 ensures the stability of the connection between the torsion spring 9 and the sleeve 5. A foot pedal 14 is connected to the free end of the rocker arm 8, and further, the foot pedal 14 is connected to the second rocker arm. The rocker arm 8 is pressed down by the operator stepping on the foot pedal 14, further saving manpower. A spring is connected between the connecting arm 11 and the rocker arm 8 to further ensure the return of the rocker arm 8.

[0024] Furthermore, the sleeve 5 is provided with teeth that mesh with the rack 4, and the teeth of the sleeve 5 and the rack 4 form a ratchet mechanism, allowing the sleeve 5 to move along the rack 4 in a second direction, which is opposite to the first direction. An elastic layer is provided between the bottom surfaces of the sleeve 5 and the rack 4, and the compression distance of the elastic layer is equal to the engagement depth of the sleeve 5 and the rack 4. The ratchet mechanism formed by the teeth in the sleeve 5 and the rack 4 ensures the accurate displacement of the sleeve 5 along the rack 4 in the first direction, preventing the sleeve 5 from continuing to move in the first direction when the rocker arm 8 returns to its original position under the action of the torsion spring 9. The elastic layer, when the pawl 12 meshes with the rack 4, causes the downward force of the rocker arm 8 to separate the teeth in the sleeve 5 from the rack 4, enabling the sleeve 5 to move along the rack 4 in the second direction.

[0025] Based on the above embodiment, a limiting rod 16 rotates on the first rotating shaft 7. One end of the limiting rod 16 is located inside the rocker arm 8, and the other end is connected to a pawl 17. The pawl 17 passes through the through hole 6 and forms a ratchet mechanism with the rack 4. The pawl 17 can move along the rack 4 in the second direction. The length of the limiting rod 16 is less than the length of the connecting arm 11. When the locking mechanism does not lock the connecting arm 11, that is, when the pawl hook 12 is in a relaxed state and not engaged with the rack 4, it prevents the rocker arm 8 from falling and causing the pawl hook 12 to contact the rack 4, thus preventing the sleeve 5 from moving along the rack 4 in the first direction.

[0026] For example, the locking mechanism includes a lever 15, one end of which is connected to the second rotating shaft 10, and the other end extends out of the bottom end of the rocker arm 8. The lever 15 drives the second rotating shaft 10 to rotate, causing the pawl hook 12 to move closer to or away from the rack 4. When the lever 15 is in the first position (locked state), the pawl hook 12 engages with the rack 4. When the lever 15 is in the second position (unlocked state), the pawl hook 12 disengages from the rack 4. Furthermore, a positioning pin 18 is fixed on the rocker arm 8, and a retaining ring adapted to the positioning pin 18 is provided on the lever 15. When the retaining ring is sleeved on the positioning pin 18, the pawl hook 12 engages with the rack 4.

[0027] The working principle of this utility model's portable towing device based on a gliding-type drone is as follows: I. Reverse Movement (Drum Assembly 3 Opening / Resetting Stage) When it is necessary to initially place the tow unit under the drone's tires, or to adjust the relative position of the tow unit to the drone (such as releasing the support from the tires), perform a backward motion: When the lever 15 is moved to the second position, the pawl 12 is in the "relaxed state" and the pawl 12 is separated from the rack 4. Since the teeth of the sleeve 5 and the rack 4 form a ratchet mechanism, when an external force is applied to the two roller assemblies 3, the teeth of the sleeve 5 and the rack 4 will not mesh when they separate. As a result, the sleeve 5 will move along the rack 4 in the first direction, causing the two roller assemblies 3 to separate. At this time, by stepping on the foot pedal, the pawl 12 is engaged with the rack 4, preventing the sleeve 5 from moving along the rack 4 in the first direction, thereby achieving precise control of the separation of the roller assembly 3. After multiple movements, the roller assembly 3 gradually opens (or returns to the initial state) by retracting, providing operating space for placing the drone tire or adjusting its position, making it convenient to place the drone tire stably on top of the roller assembly 3.

[0028] (ii) Forward movement (closing / lifting stage of roller assembly 3) When the drone tires are properly positioned and the drone needs to be towed (e.g., for relocation, moving to a takeoff position, etc.), a forward motion is executed, causing the rollers to gradually close and lift the tires. Move the control lever 15 to the first position. At this time, the second rotating shaft 10 is locked by the lever 15, so that when the rocker arm 8 is in its initial state, the pawl 12 engages with the rack 4, entering the "locked and ready to drive" state. When the operator steps on the pedal 14, the force of stepping on the pedal 14 is transmitted to the pawl 12. Since the pawl 12 is already engaged with the rack 4, each time the pedal 14 is stepped on, the rack 4 is pressed down, causing the rack 4 to separate from the teeth inside the sleeve 5. And since the length of the limit rod 16 is less than the length of the connecting arm 11, the pawl 17 does not contact the rack 4, so it will move along the rack 4 in the second direction, driving the roller assembly 3 to gradually close. As the roller continues to close, the drone tire is gradually lifted to a suspended state, realizing stable support and preparation for dragging the drone.

[0029] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A convenient towing device based on a gliding-type unmanned aerial vehicle, characterized in that, include: Two load-bearing beams are arranged in parallel, with casters connected to both ends of the load-bearing beams and roller assemblies connected to the load-bearing beams; The rack has one end fixed to one of the load-bearing beams and the other end fitted with a sleeve, which is fixed to another load-bearing beam. The surface of the sleeve that contacts the teeth of the rack has through holes. The sleeve can reciprocate along the rack, causing the two roller assemblies to move closer and further apart. One end of the sleeve is hinged to a rocker arm with a U-shaped cross section via a first rotating shaft; the sleeve is connected to a torsion spring on the first rotating shaft via a connecting seat, one end of the torsion spring abuts against the sleeve, and the other end abuts against the rocker arm. The second rotating shaft is rotatably connected to the two side walls of the rocker arm at both ends; the connecting arm is connected at one end to the second rotating shaft and located inside the rocker arm, and at the other end is connected to a claw hook that matches the rack and pinion, with the claw hook located above the through hole. The locking mechanism is connected to the second rotating shaft. The locking mechanism drives the claw hook to pass through the through hole and move closer to or away from the rack.

2. The portable towing device for gliding unmanned aerial vehicles according to claim 1, characterized in that, The roller assembly includes a first roller, which is fixed parallel to the load-bearing beam and connected parallel to a second roller via a connecting rod. The second roller is located below the first roller, and the distance between the two second rollers is less than the distance between the two first rollers.

3. The portable towing device for gliding unmanned aerial vehicles according to claim 1, characterized in that, The sleeve is provided with teeth that mesh with the rack, and the teeth of the sleeve and the rack form a ratchet mechanism, which causes the sleeve to move along the rack in a first direction, wherein the first direction is the direction in which the two roller assemblies move away from each other; An elastic layer is provided between the bottom surface of the sleeve and the rack, and the compression distance of the elastic layer is equal to the meshing depth of the sleeve and the rack.

4. The portable towing device for gliding unmanned aerial vehicles according to claim 1, characterized in that, A limit rod rotates on the first rotating shaft. One end of the limit rod is located inside the rocker arm, and the other end is connected to a pawl. The pawl passes through the through hole and forms a ratchet mechanism with the rack. The pawl can move along the rack in the first direction.

5. The portable towing device for gliding unmanned aerial vehicles according to claim 1, characterized in that, The locking mechanism includes a paddle, one end of which is connected to the second rotating shaft and the other end extends out of the bottom of the rocker arm; the paddle drives the second rotating shaft to rotate, causing the pawl to move closer to or away from the rack.

6. The portable towing device for gliding unmanned aerial vehicles according to claim 5, characterized in that, A positioning pin is fixed on the rocker arm, and a retaining ring that matches the positioning pin is provided on the paddle. When the retaining ring is sleeved on the positioning pin, the claw hook engages with the rack.

7. The portable towing device for gliding unmanned aerial vehicles according to claim 1, characterized in that, A spring connects the connecting arm and the rocker arm.

8. The portable towing device for gliding unmanned aerial vehicles according to claim 1, characterized in that, A positioning rod is fixed on the outer wall of the sleeve. One end of the torsion spring is connected to the positioning rod, and the other end abuts against the inner side of the rocker arm.

9. The portable towing device for gliding unmanned aerial vehicles according to claim 1, characterized in that, The free end of the rocker arm is connected to a foot pedal.

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