Landing rod, locking device and unmanned aerial vehicle

Abstract

The utility model discloses a kind of landing lever, locking catch device and unmanned aerial vehicle, including unmanned aerial vehicle body, unmanned aerial vehicle body configuration landing and taking off landing assembly, landing assembly adopts locking catch device, it is arranged on unmanned aerial vehicle body by electromagnetic chuck up and down extension.This utility model's landing lever, locking catch device and unmanned aerial vehicle, with electromagnetic chuck and conductive slip ring, utilize electromagnetic chuck and landing lever adsorption effect, to gradually fixed when landing, reduce impact, and then adopt conductive slip ring to drive rotating sleeve rotation to make locking protrusion card into locking groove face, to lock landing lever.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a landing rod, a locking device, and an UAV. Background Technology

[0002] A typical drone on the market includes a fuselage, frame, tripod, tow arm, and rotor, and is equipped with a control system and power supply. It can be remotely controlled by a remote control or mobile phone to take off, then cruise in the air to work or cruise to a preset location to land and work on the ground. When the work is completed or the power supply needs to be replaced, it returns to home and lands.

[0003] For example, in the Chinese patent document "Landing Rod Locking Device and UAV, CN223116646U", a locking box is arranged on the UAV body, and the landing rod is slidably connected to the locking hole and sliding lock hole of the locking box. The inner wall of the locking hole is adapted to the outer wall of the landing rod. When driven by the driver, the slider can be radially inserted into the landing rod. The locking segment is inserted and locked onto the outer wall of the landing rod. The landing rod can be locked by simply driving the slider to move to the right.

[0004] As mentioned above, the locking device inserts into and locks onto the outer wall of the landing bar. Due to the impact of the drone landing, the locking segment and the outer wall of the landing bar are easily damaged by impact after multiple landings. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned problems by providing a landing boom, a locking device, and a drone that can be gradually fixed and then locked during landing.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The drone includes the drone body, which is equipped with a take-off and landing assembly. The take-off and landing assembly uses a locking device and is arranged on the drone body by extending vertically via electromagnetic chucks.

[0007] The locking device includes an electromagnetic chuck, a conductive slip ring, and a lifting rod. The lifting rod includes a lifting rod with an axially extending magnetic surface on its outer side wall to attract the electromagnetic chuck. The outer side wall of the lifting rod also has an axially extending locking groove to lock it securely with the locking device. The electromagnetic chuck has a through-hole with the lifting rod inserted through it. The electromagnetic chuck has a magnetically conductive panel that matches the magnetic surface and is located on the inner side wall of the magnetic hole. The conductive slip ring has a rotating sleeve on its inner side wall with a locking protrusion that matches the locking groove. The lifting rod is inserted into the rotating sleeve. The conductive slip ring is positioned below the electromagnetic chuck and can rotate the rotating sleeve to engage the locking protrusion with the locking groove.

[0008] The locking groove surface of the landing boom has a circular or elliptical arc cross-section and is equipped with axially spirally extending internal threads; the magnetic suction surface is an axially extending rectangular plane. The locking protrusion of the rotating sleeve is an axially spirally extending external thread that matches the internal threads. The spiral structure allows for vertical adjustment of the locking device at the landing boom height.

[0009] As mentioned above, it is equipped with an electromagnetic chuck and a conductive slip ring. The electromagnetic chuck attracts the landing bar to gradually fix it during landing, reducing impact. Then, the conductive slip ring drives the rotating sleeve to rotate, so that the locking protrusion engages with the locking groove to lock the landing bar.

[0010] Based on the aforementioned solution, in an improved version, the landing boom of the UAV further includes an electrically telescopic boom. The landing boom has an axially extending hollow hole, the actuator of the electrically telescopic boom is installed at the upper end of the landing boom, and the telescopic tube of the electrically telescopic boom is installed in the hollow hole of the landing boom and extends downward. This forms a two-stage landing structure, which is activated after landing for balance adjustment or upward lifting.

[0011] Based on the aforementioned solution, in an improved version, the locking device of the UAV further includes an electric actuator. A conductive slip ring is radially slidable on the landing stick, and the electric actuator extends radially on the landing stick, capable of pushing the conductive slip ring radially inward or outward on the landing stick. This retracts the external thread, exposing the vertical sliding space and preventing contact, while ensuring stable locking during locking.

[0012] By adopting the above technical solution, this utility model has the following beneficial effects: This invention relates to a landing boom, locking device, and drone, equipped with an electromagnetic chuck and a conductive slip ring. The electromagnetic chuck attracts the landing boom, gradually securing it during landing and reducing impact. The conductive slip ring then drives a rotating sleeve to engage a locking protrusion in a locking groove, thus locking the landing boom. An electrically telescopic boom forms a two-stage landing structure with the landing boom, which is activated after landing for balance adjustment or upward lifting. Attached Figure Description

[0013] Figure 1 This is a side view of the present invention. Figure 2 Yes, this is a partial structural diagram. Figure 3 yes Figure 2 Another perspective on the partial structure diagram. Figure 4 yes Figure 2 Another perspective on the partial structure diagram. Figure 5 yes Figure 2 Another perspective on the partial structure diagram. Figure 6 yes Figure 2 Another perspective on the partial structure diagram. Figure 7 yes Figure 2Another perspective on the partial structure diagram. Figure 8 yes Figure 2 Another perspective on the partial structure diagram. Figure 9 yes Figure 2 Another perspective on the partial structure diagram. Figure 10 Yes, yes Figure 2 A schematic diagram of the locking device structure. Figure 11 yes Figure 10 Another perspective structural diagram. Figure 12 yes Figure 10 A schematic diagram of the connection structure between the electromagnetic chuck and the lifting rod. Figure 13 yes Figure 12 Another perspective structural diagram. Figure 14 yes Figure 12 A schematic diagram of the internal structure of the electromagnetic chuck. Figure 15 yes Figure 10 A schematic diagram of the connection structure between the conductive slip ring and the landing bar. Figure 16 yes Figure 15 Another perspective structural diagram. Figure 17 yes Figure 15 Another perspective structural diagram. Figure 18 yes Figure 15 A schematic diagram of the internal structure of a conductive slip ring.

[0014] In the attached diagram, 1 is the fuselage, 2 is the frame, 3 is the support arm, 4 is the rotor, 5 is the landing gear, and 6 is the locking device. Detailed Implementation Example

[0015] As mentioned above, this application includes basic solutions and improved solutions, such as an improved solution including an electric telescopic pole solution, etc. The feature combinations of each application example can be combined according to actual needs. The following will use examples of preferred combinations of all features to illustrate the application.

[0016] See Figures 1-17 The drone in this embodiment includes a drone body, which is equipped with a take-off and landing assembly. The take-off and landing assembly adopts a locking device and is arranged on the drone body by extending vertically via an electromagnetic chuck.

[0017] Taking a rotary-wing drone as an example, the drone body includes a fuselage 1, a frame 2, landing gear, a support arm 3, and rotors 4. The power motor and drive shaft can be solid or hollow. The fuselage 1 houses a lithium battery pack and a controller circuit board, which are connected and control the rotors via standard cables. The drone body and its control system are existing technologies and will not be elaborated upon here; for example, DJI drones on the market. This application aims to improve the take-off and landing structure of existing drones, specifically the landing bar and locking structure. This will be explained in detail below with reference to the accompanying drawings. For other details not covered herein, please refer to existing technologies, such as the Chinese patent document "Landing Bar Locking Device and Drone, CN223116646U," etc.

[0018] The locking device 6 includes an electromagnetic chuck 63, a conductive slip ring 61, and a lifting rod 5. The lifting rod 5 includes a lifting rod 51, the outer wall of which is provided with an axially extending magnetic attraction surface to allow it to attract the electromagnetic chuck. The outer wall of the lifting rod 51 is also provided with an axially extending locking groove surface to allow it to be locked and fixed with the locking device. As shown in the figure, the cross-section of the lifting rod is a rectangular structure with one side arc. The arc surface is provided with the locking groove surface, and the other three planes can all be used as magnetic attraction surfaces. Preferably, the plane directly opposite the locking groove surface is used as the magnetic attraction surface. Figure 14 The central area shown is a magnetic suction surface, and the areas on both sides are welded or integrally formed areas. The electromagnetic chuck 63 is provided with a magnetic suction hole that runs vertically through it. The lifting rod 51 passes through the magnetic suction hole. The electromagnetic chuck 63 is provided with a magnetically conductive panel that matches the magnetic suction surface, and the magnetically conductive panel is arranged on the inner wall of the magnetic suction hole. As shown in the figure, the vertically through magnetic suction hole structure can play a guiding and limiting role while performing magnetic attraction. The inner wall of the conductive slip ring 61 is provided with a rotating sleeve. The inner wall of the rotating sleeve is provided with a locking protrusion that matches the locking groove surface. The lifting rod 51 passes through the rotating sleeve. The conductive slip ring 61 is arranged below the electromagnetic chuck 63 so that it is supported at the bottom of the electromagnetic chuck in terms of force. The conductive slip ring can drive the rotating sleeve to rotate so that the locking protrusion is engaged with the locking groove surface.

[0019] The locking mechanism can employ radially extending or helically extending groove-like structures, such as the wall of a bellows. Taking this threaded structure as an example, the locking groove surface of the landing boom has a circular or elliptical arc cross-section and is equipped with axially helically extending internal threads; the magnetic suction surface is an axially extending rectangular plane. The locking protrusion of the rotating sleeve is an axially helically extending external thread that matches the internal thread. Furthermore, the helical structure using both internal and external threads allows for vertical adjustment of the locking device at the landing boom height.

[0020] The drone's landing boom also includes an electrically telescopic boom. The landing boom has an axially extending hollow hole. The actuator 53 of the electrically telescopic boom is installed at the upper end of the landing boom, and the telescopic tube 52 of the electrically telescopic boom is installed in the hollow hole of the landing boom and extends downward. This forms a two-stage landing structure, which is activated after landing for balance adjustment or upward lifting.

[0021] The locking device of this drone also includes an electric push rod 62. A conductive slip ring can slide radially on the landing stick. The electric push rod extends radially on the landing stick and can push the conductive slip ring to move radially inward or outward on the landing stick. In this way, the retracted external thread exposes the upper and lower sliding space, avoiding contact, while ensuring stable locking during locking. As mentioned above, an electromagnetic chuck and a conductive slip ring are configured. The electromagnetic chuck attracts the landing stick to gradually fix it during landing, reducing impact. Then, the conductive slip ring drives the rotating sleeve to rotate, causing the locking protrusion to engage with the locking groove surface to lock the landing stick.

[0022] As mentioned above, it is equipped with an electromagnetic chuck and a conductive slip ring. The electromagnetic chuck attracts the landing bar to gradually fix it during landing, reducing impact. Then, the conductive slip ring drives the rotating sleeve to rotate, so that the locking protrusion engages with the locking groove to lock the landing bar.

[0023] When the drone lands, the landing stick (a square tube with curved surfaces and internal threads) 51 will contact the ground. At this time, the landing stick 51 is not locked, and the drone will continue to descend under the influence of gravity. At this point, the electromagnetic chuck (a chuck composed of embedded electromagnetic coils) 63 will be energized and will attract the landing stick 51. Its attraction force gradually stops the drone's descent. After the drone stops descending, the electric actuator (pen-type electric actuator, with the stroke direction in the same direction as the free direction of the conductive slip ring) 62 will push the conductive slip ring (which has a free direction perpendicular to the arm and is equipped with a rotating sleeve) 61 radially towards the center of the landing stick, so that the external threads of the sleeve and the internal threads of the landing stick are engaged. This action locks the sleeve and the landing stick together. The final action is that the conductive slip ring 61 starts to work, driving the sleeve to rotate, causing the drone to move up and down on the square landing stick 51 for leveling.

[0024] For example, when a drone lands, the landing stick touches the ground, the electromagnet activates, and the drone stops falling. The drone weighs 60kg. Assuming the landing stick and suction cup are made of 45# steel with a coefficient of friction of 0.2, the required magnetic force is 60 / 0.2 = 300, meaning a single magnet needs to provide a force of 300 / 4 = 75kgf. Table 1 shows products on the market that can provide this force, including model number, voltage, current, power, and suction force.

[0025] Table 1. Electromagnetic Chuck Coil Configuration Table

[0026] After the drone lands, the electric actuator pulls back the conductive slip ring, causing the sleeve to engage with the square tube. At this point, the conductive slip ring operates, diverting the current to the electromagnetic chuck. The electromagnetic chuck's suction force decreases (or even stops working), bringing the landing boom and electromagnetic chuck to the critical point of static and dynamic friction. The conductive slip ring then drives the sleeve to rotate, gradually adjusting the drone's level and altitude. Furthermore, power is supplied to the drive motor 53 of the electric telescopic boom, pushing the telescopic tube 52 outward to further adjust the drone's altitude, adapting to different operational needs.

[0027] As mentioned above, the aforementioned drone solution includes a landing boom solution and a locking device solution, which have basic and improved solutions respectively. For the feature combinations of each application example, please refer to the above, and will not be elaborated here.

[0028] It should be noted that the examples of the above embodiments can preferably be combined with one or more of each other according to actual needs, and the accompanying drawings of multiple examples adopt a set of combined technical features, which will not be described in detail here.

[0029] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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.

[0030] The above description is a detailed explanation and illustration of the preferred embodiments of the present utility model. However, these descriptions are not intended to limit the scope of protection claimed by the present utility model. All equivalent changes or modifications made under the technical teachings of the present utility model shall fall within the patent protection scope covered by the present utility model.

Claims

1. A landing boom assembly, comprising a landing boom, characterized in that: The outer side wall of the landing bar is provided with an axially extending magnetic suction surface so that it can form an adsorption effect with the electromagnetic chuck; the outer side wall of the landing bar is also provided with an axially extending locking groove surface so that it can be locked and fixed with the locking device.

2. The lifting boom according to claim 1, characterized in that: It also includes an electric telescopic boom, the boom having an axially extending hollow hole, the driver of the electric telescopic boom being installed at the upper end of the boom, and the telescopic tube of the electric telescopic boom being installed in the hollow hole of the boom and extending downward therefrom.

3. The lifting boom according to claim 1, characterized in that: The locking groove of the lifting rod has a cross-section in the shape of a circular arc or an elliptical arc, and is provided with an axially spirally extending internal thread; the magnetic suction surface is an axially extending rectangular plane.

4. A locking device, characterized in that: The device includes an electromagnetic chuck, a conductive slip ring, and a lifting rod as described in any one of claims 1-3. The electromagnetic chuck has a through magnetic hole, and the lifting rod passes through the magnetic hole. The electromagnetic chuck has a magnetically conductive panel adapted to the magnetic surface, and the magnetically conductive panel is arranged on the inner wall of the magnetic hole. The inner wall of the conductive slip ring has a rotating sleeve, and the inner wall of the rotating sleeve has a locking protrusion adapted to the locking groove surface. The lifting rod passes through the rotating sleeve, and the conductive slip ring is arranged below the electromagnetic chuck. The conductive slip ring can drive the rotating sleeve to rotate so that the locking protrusion engages with the locking groove surface.

5. The locking device according to claim 4, characterized in that: It also includes an electric actuator, a conductive slip ring that can slide radially on the landing bar, the electric actuator extending radially on the landing bar, and the electric actuator capable of pushing the conductive slip ring to move radially inward or outward on the landing bar.

6. The locking device according to claim 4, characterized in that: The locking protrusion of the rotating sleeve is an axially spirally extending external thread.

7. A drone, comprising a drone body, wherein the drone body is equipped with a take-off and landing assembly, characterized in that: The landing assembly employs the locking device as described in any one of claims 4-6, which is arranged vertically on the UAV body via an electromagnetic chuck.

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