Falling stabilizing device for surveying and mapping unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicle safe landing, in particular to a surveying and mapping unmanned aerial vehicle falling stabilizing device, a main body of the device comprises a fuselage connecting table, a buffer piece and buffer supporting legs, the fuselage connecting table is installed on the lower side of a fuselage of an unmanned aerial vehicle, and rotating seats are fixedly installed on the two sides of the bottom of the fuselage connecting table respectively; two rotating seats are arranged at the bottom of the fuselage connecting table, buffer supporting legs are rotatably arranged on the two rotating seats respectively, torsion positioning parts are arranged between rotating shafts of the buffer supporting legs and the rotating seats, and buffer parts which can abut against the ground are arranged on the middle side of the bottom of the fuselage connecting table. Buffer protection is provided for the unmanned aerial vehicle in the landing process, and the stability of the surveying and mapping unmanned aerial vehicle in the landing process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of safe landing of unmanned aerial vehicles, in particular to a landing stabilizing device for a surveying and mapping unmanned aerial vehicle. Background Art

[0002] In order to meet the needs of large-scale surveying and mapping operations, the surveying and mapping UAV needs to increase the battery capacity, the number of lidar sensors and camera modules of the UAV, which will lead to a larger overall weight of the UAV body, thereby increasing the risk of collision and damage of the surveying and mapping UAV during landing. Therefore, it is necessary to improve the landing stability of the surveying and mapping UAV;

[0003] The existing application number is CN202221422170.5, which is a kind of surveying and mapping UAV that can land stably. The patent document discloses a structure that uses a parachute that can be opened to achieve the buffering purpose of the UAV during the forced landing process. Specifically: the surveying and mapping UAV is fixedly connected to the left and right sides of the machine arm, and the outer side of the machine arm is fixedly connected to the fixed column, and the upper end face of the fixed column is fixedly connected to the parachute compartment, and the lower left and right sides of the inside of the parachute compartment are fixedly connected to the umbrella rope, and the other end of the umbrella rope is fixedly connected to the umbrella cloth, and the middle lower part of the parachute compartment is fixedly connected to the hollow shell, and the lower part of the hollow shell is fixedly connected to the second compression spring, and the upper end face of the second compression spring is fixedly connected to the push rod, and the upper end face of the push rod is fixedly connected to the sliding plate, and the upper outer side of the hollow shell is fixedly connected to the hollow block, and the inner and outer sides of the hollow block are fixedly connected to the electric spring block, and the other end of the electric spring block is fixedly connected to the card block;

[0004] However, when the above solution is adopted, in order for the parachute to open normally, the parachute needs to have a larger opening range, which will increase the weight and volume of the parachute-related accessories, increase the wind resistance of the drone during flight, and have an adverse effect on the drone's mapping work. In addition, the parachute is set above the drone and cannot provide protection for the drone when it lands. Utility Model Content

[0005] In order to solve the deficiencies in the above-mentioned prior art, the purpose of the utility model is to provide a surveying and mapping UAV landing stabilization device, which provides buffering protection for the UAV during landing on the basis of reducing the influence of wind resistance caused by its own structure on the UAV surveying and mapping operation, thereby increasing the stability of the surveying and mapping UAV during the falling process.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A device for stabilizing the fall of a surveying and mapping UAV is provided. The main body of the device comprises a fuselage connecting platform, a buffer component and buffer legs.

[0008] The fuselage connecting platform is installed on the lower side of the fuselage of the drone, and rotating seats are fixedly installed on both sides of the bottom of the fuselage connecting platform, and buffer legs are rotatably installed on the two rotating seats. A torsion positioning component is installed between the rotating shaft of the buffer leg and the rotating seat. A buffer part that can abut against the ground is installed on the middle side of the bottom of the fuselage connecting platform, and the buffer part is a solid rubber ball or a hollow rubber ball.

[0009] The torsion positioning component can use a torsion spring, which is directly welded and fixedly connected between the rotating shaft of the buffer leg and the rotating seat.

[0010] Furthermore, a positioning ring and a sleeve ring can be welded and fixedly connected at both ends of the torsion spring, and the positioning ring can be detachably fixedly mounted on the rotating shaft of the buffer leg through fasteners, and the sleeve ring can be detachably fixedly mounted on the rotating seat through fasteners, so that the buffer leg is easy to disassemble and maintain.

[0011] Furthermore, the rotating shaft of the buffer leg is connected to an elastic pad with a bent structure through a connecting rod, and the bottom of the elastic pad has two contact planes;

[0012] When the UAV is placed naturally on the ground, the contact plane of the elastic pad located on the outside is in contact with the ground;

[0013] When the UAV is subjected to downward pressure from the vertical ground, the buffer legs rotate toward the outside of the fuselage connecting platform, and the contact plane of the elastic pad located on the inside contacts the ground.

[0014] Furthermore, the elastic pad may be provided with a hollow groove to reduce the weight of the elastic pad.

[0015] Furthermore, the elastic pad and buffer can be made of silicone or rubber materials. The elastic material is used as the component that the bottom of the drone contacts the ground in advance, which provides buffering protection for the drone during landing and increases the stability of the surveying and mapping drone during the falling process.

[0016] Furthermore, the lower end of the connecting rod is extended toward the outer side of the bottom of the fuselage connecting platform;

[0017] When the UAV falls to the ground, the direction of the reaction force applied by the ground to the elastic pad is at a certain angle to the extension direction of the connecting rod, making it easier for the connecting rod to drive the elastic pad to rotate toward the outside of the fuselage connecting platform, and converting part of the vertical reaction force applied by the ground to the buffer leg into a driving force for driving the buffer leg to rotate outward, further increasing the stability of the surveying and mapping UAV during landing.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The surveying and mapping UAV descent stabilization device of the utility model example, the main body of the device is composed of a fuselage connecting platform, a buffer part and a buffer leg. The overall number of components of the device is small and the structure is simple. It can reduce the impact of wind resistance on the surveying and mapping operation of the UAV, ensure the endurance of the long-term shooting operation of the surveying and mapping UAV, and improve the operation efficiency.

[0020] 2. The surveying and mapping UAV falling stabilization device of the utility model example uses elastic material as the component of the bottom of the UAV that contacts the ground in advance, provides buffering protection for the UAV during landing, increases the stability of the surveying and mapping UAV during the falling process, and avoids impact damage to the UAV when it falls.

[0021] 3. In the surveying and mapping UAV landing stabilization device of the utility model example, the lower end of the connecting rod extends toward the outside of the bottom of the fuselage connecting platform. During the landing of the UAV, part of the vertical reaction force applied by the ground to the buffer legs is converted into a driving force for driving the buffer legs to rotate outward, so as to achieve a buffering protection effect on the landing of the UAV and further increase the stability of the surveying and mapping UAV during the landing process.

[0022] 4. The surveying and mapping UAV landing stabilization device of the utility model example is also provided with a buffer part at the middle side of the bottom of the fuselage connecting platform, and the buffer part is in contact with the ground to further increase the buffering protection effect on the landing of the UAV. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the descent stabilization device for surveying and mapping UAV of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the fuselage connecting platform and the buffer legs in the first embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the buffer member in the second embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the buffer component in the third embodiment of the present utility model.

[0028] Figure 5 It is a schematic diagram of the bottom of the buffer member of the utility model protruding downward from the bottom of the elastic pad.

[0029] Figure 6 It is a schematic diagram of the structure of the buffer leg in the fourth embodiment of the utility model.

[0030] Figure 7This is a schematic diagram of the structure of the buffer member in the fifth embodiment of the present utility model.

[0031] Figure 8 The structure of the buffer leg and the pressure-bearing arm in the fifth embodiment of the utility model is shown in FIG. Figure 1 .

[0032] Fig. 9 The structure of the buffer leg and the pressure-bearing arm in the fifth embodiment of the utility model is shown in FIG. Figure 2 .

[0033] Fig.10 It is a structural schematic diagram of the fuselage connecting platform in the fifth embodiment of the present utility model.

[0034] Fig.11 It is a partial enlarged view of the fuselage connecting platform in the fifth embodiment of the present utility model.

[0035] In the figure: 11 body connecting platform, 12 rotating seat, 13 sleeve, 14 air chamber, 15 air hole I, 16 receiving groove, 21 buffer leg, 22 positioning ring, 23 sleeve ring, 24 pressure handle, 31 ejection terminal, 32 buffer member, 33 pressure arm, 34 plunger, 35 air hole II. DETAILED DESCRIPTION

[0036] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0037] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0038] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0039] In the description of the present invention, 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 drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. It should also be noted that, for ease of description, only the parts related to the utility model are shown in the drawings. Example

[0042] like Figure 1 and Figure 2 As shown, this embodiment provides a surveying and mapping UAV landing stabilization device, including a fuselage connecting platform 11, a rotating seat 12 and two buffer legs 21. The fuselage connecting platform 11 is detachably fixed on the lower side of the UAV fuselage by fasteners such as screws, and the two buffer legs 21 are rotatably mounted on both sides of the bottom of the fuselage connecting platform 11 through separate rotating seats 12.

[0043] In order to achieve buffering protection for the UAV during landing, a torsion positioning component is installed between the rotating seat 12 and the buffer leg 21, and the torsion positioning component is used to limit the initial position of the buffer leg 21.

[0044] The torsion positioning component can use a torsion spring, which is directly welded and fixedly connected between the rotating shaft of the buffer leg 21 and the rotating seat 12; the positioning ring 22 and the sleeve ring 23 can also be welded and fixedly connected at both ends of the torsion spring, and the positioning ring 22 can be detachably fixedly installed on the rotating shaft of the buffer leg 21 by fasteners, and the sleeve ring 23 can be detachably fixedly installed on the rotating seat 12 by fasteners, so that the buffer leg is easy to disassemble and maintain.

[0045] When the UAV lands, the ground exerts a reaction force on the buffer legs 21, driving the two buffer legs 21 to rotate outward, and the two buffer legs 21 flip open, converting part of the vertical reaction force exerted by the ground on the buffer legs 21 into a driving force for driving the buffer legs 21 to rotate outward, so as to achieve a cushioning effect on the landing of the UAV;

[0046] After the UAV takes off again, the torsion positioning component drives the buffer legs 21 to reset, and the two buffer legs 21 rotate inwards again and close to reset.

[0047] In this embodiment, the rotating shaft of the buffer leg 21 is connected to an elastic pad with a bent structure through a connecting rod, and the bottom of the elastic pad has two contact planes;

[0048] When the UAV is placed naturally on the ground, the contact plane of the elastic pad located on the outside is in contact with the ground;

[0049] When the UAV is subjected to downward pressure from the vertical ground, the buffer legs 21 rotate toward the outside of the fuselage connecting platform 11, and the contact plane of the elastic pad located on the inner side contacts the ground.

[0050] Since the shortest distance between the outer contact plane of the elastic pad and the rotating shaft of the buffer leg 21 is greater than the shortest distance between the inner contact plane of the elastic pad and the rotating shaft of the buffer leg 21; therefore, when the two contact planes at the bottom of the elastic pad switch to the contact state with the ground, the distance between the fuselage connecting platform 11 and the ground can be actively reduced to increase the stability of the drone during landing and prevent the drone fuselage from being overturned by strong winds.

[0051] Furthermore, the connecting rod, which is used to connect the rotating shaft of the buffer leg 21 and the elastic pad, has its lower end extending toward the outer side of the bottom of the fuselage connecting platform 11;

[0052] When the UAV falls to the ground, the direction of the reaction force applied by the ground to the elastic pad is at a certain angle to the extension direction of the connecting rod, making it easier for the connecting rod to drive the elastic pad to rotate toward the outside of the fuselage connecting platform 11, and converting part of the vertical reaction force applied by the ground to the buffer leg 21 into a driving force for driving the buffer leg 21 to rotate outward, so as to achieve a buffering effect on the landing of the UAV. Example

[0053] The features common to the first embodiment of this embodiment are not described in detail. The technical solutions different between the first embodiment of this embodiment and the first embodiment are as follows: Figure 3 As shown, in this embodiment, a sleeve 13 is fixedly installed on the middle side of the bottom of the fuselage connecting platform 11 , and a buffer member 32 is fixedly installed on the lower end of the sleeve 13 .

[0054] Among them, the elastic pad and the buffer member 32 can both be made of silicone or rubber materials. The elastic material is used as a component that the bottom of the drone contacts the ground in advance, which provides buffering protection for the drone during landing and increases the stability of the surveying and mapping drone during the falling process.

[0055] In this embodiment, the buffer 32 is a solid or hollow bulging rubber ball or silicone ball. After the two buffer legs 21 are flipped outward, the lower end of the buffer 32 begins to contact the ground. The buffer legs 21 and the buffer 32 together play a role in providing buffering protection for the UAV during the landing process, thereby increasing the stability of the surveying and mapping UAV during the falling process. Example

[0056] The features common to the second embodiment of this embodiment are not described in detail. The technical solutions different between the second embodiment of this embodiment and the second embodiment are as follows: Figure 4 and Figure 5 As shown, in this embodiment, an ejection terminal 31 is vertically slidably installed in the sleeve 13 , and a buffer member 32 is fixedly installed at the lower end of the ejection terminal 31 .

[0057] After freely adjusting the position of the ejection terminal 31 in the sleeve 13, use fasteners to lock the two in position, change the position of the buffer 32 on the lower side of the fuselage connecting platform 11, and adjust the contact performance between the buffer 32 and the ground during the landing of the UAV to cope with surveying and mapping UAV models of different weights. Example

[0058] The features common to the third embodiment of this embodiment are not described in detail. The technical solutions different between the third embodiment of this embodiment and the third embodiment are as follows: Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment, the ejection terminal 31 can slide freely in the sleeve 13, and a pressure arm 33 with two ends bent downward is fixedly installed on the upper side of the ejection terminal 31. A pressure handle 24 is fixedly installed on the rotating shaft of the buffer leg 21, and the side plane of the pressure handle 24 is in contact with the arc surface of the end of the pressure arm 33.

[0059] When the two buffer legs 21 are flipped and rotated toward the outside of the fuselage connecting platform 11, the two pressure handles 24 press the two ends of the pressure arm 33 respectively, so that the ejection terminal 31 can drive the buffer member 32 to actively extend downward, further increasing the effect of providing buffer protection for the drone during landing, and preventing debris such as stones on the ground from puncturing and damaging the middle side of the bottom of the fuselage connecting platform 11. Example

[0060] The features common to the fourth embodiment are not described in detail. The technical solutions different between the fourth embodiment and the present embodiment are as follows: Figure 7-Figure 11 As shown, in this embodiment, the buffer member 32 can be retracted at the bottom of the sleeve 13 when the two buffer legs 21 are closed together, thereby reducing the problem of increased wind resistance of the UAV caused by the expansion of the buffer member 32 itself.

[0061] In this embodiment, the buffer 32 is a hollow rubber ball or a silicone ball. Two plungers 34 are fixedly installed at the bottom of the pressure-bearing arm 33. The plungers 34 are slidably installed with the gas chamber 14 in the sleeve 13. The side of the plunger 34 fits with the inner wall of the gas chamber 14. The bottom of the gas chamber 14 is connected with an air hole I 15, and the top of the buffer 32 is connected with an air hole II 35. The air hole I 15 and the air hole II 35 are connected through a hose. The bottom of the sleeve 13 is provided with a receiving groove 16 for accommodating the hose.

[0062] During the process of the two buffer legs 21 flipping and rotating toward the outside of the fuselage connecting platform 11, the two pressure handles 24 respectively press the two ends of the pressure-bearing arm 33, so that the ejection terminal 31 can drive the buffer member 32 to actively extend downward. At the same time, the plunger 34 moves downward in the air chamber 14, squeezing air into the buffer member 32 to make it swell. The swollen and downwardly extended buffer member 32 contacts the ground, providing buffer protection for the drone during landing.

[0063] After the UAV leaves the ground, the two buffer legs 21 retract and close inward again. Due to the elastic material characteristics of the buffer 32, under the action of the external atmospheric pressure, the air in the buffer 32 re-enters the air chamber 14, driving the plunger 34 to move upward and reset. The buffer 32 becomes deflated, reducing the wind resistance of the UAV flight, ensuring the endurance of the surveying and mapping UAV's long-term shooting operations, and improving operating efficiency.

[0064] Furthermore, a disc-shaped structure protruding outward may be provided at the bottom of the plunger 34;

[0065] The side wall of the disc-shaped structure and the inner wall of the gas bin 14 form a closed space. When the plunger 34 slides vertically in the gas bin 14, only the disc-shaped structure abuts against the inner wall of the gas bin 14, thereby reducing the friction resistance of the plunger 34 and increasing the smoothness of the ejection terminal 31 driving the buffer 32 to eject downward.

[0066] When a disc-shaped structure is provided at the bottom of the plunger 34, the upper end of the disc-shaped structure is connected to the external atmosphere, and a breathable filter is installed on the upper side of the air bin 14 to block dust from entering the air and reduce the maintenance cost of the equipment.

[0067] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

[0068] Except for the technical features described in the specification, the other technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present utility model, the other technical features will not be described in detail here.

Claims

1. A device for stabilizing the fall of a surveying and mapping UAV, comprising a fuselage connection platform (11) mounted on the lower side of the UAV fuselage, and buffer legs (21) are rotatably mounted on rotating seats (12) on both sides of the bottom of the fuselage connection platform (11), characterized in that: A torsion positioning component is installed between the rotating shaft of the buffer support leg (21) and the rotating seat (12), and a buffer component (32) capable of abutting against the ground is also installed on the middle side of the bottom of the fuselage connecting platform (11).

2. The falling stabilization device for surveying and mapping UAV according to claim 1 is characterized in that: The rotating shaft of the buffer leg (21) is connected to an elastic pad with a bent structure via a connecting rod, and the bottom of the elastic pad has two contact planes; When the UAV is placed naturally on the ground, the contact plane of the elastic pad located on the outside is in contact with the ground; When the drone is subjected to downward pressure from the vertical ground, the buffer legs (21) rotate toward the outside of the fuselage connection platform (11), and the contact plane of the elastic pad located on the inside contacts the ground.

3. The falling stabilization device for surveying and mapping UAV according to claim 1 is characterized in that: A sleeve (13) is fixedly mounted on the middle side of the bottom of the fuselage connection platform (11), and a buffer component (32) is fixedly mounted on the lower end of the sleeve (13).

4. The falling stabilization device for a surveying and mapping UAV according to claim 1 is characterized in that: A sleeve (13) is fixedly mounted on the middle side of the bottom of the fuselage connection platform (11), an ejection terminal (31) is vertically slidably mounted in the sleeve (13), and a buffer member (32) is fixedly mounted on the lower end of the ejection terminal (31).

5. The falling stabilization device for a surveying and mapping UAV according to any one of claims 3-4, characterized in that: The buffer component (32) is a solid rubber ball.

6. The falling stabilization device for a surveying and mapping UAV according to claim 4 is characterized in that: The buffer component (32) is a hollow rubber ball.

7. The falling stabilization device for a surveying and mapping UAV according to claim 6 is characterized in that: A pressure-bearing arm (33) with two ends bent downward is fixedly mounted on the upper side of the ejection terminal (31), and a pressure handle (24) is fixedly mounted on the rotating shaft of the buffer leg (21), and the side plane of the pressure handle (24) abuts against the end arc surface of the pressure-bearing arm (33).

8. The falling stabilization device for surveying and mapping UAV according to claim 7 is characterized in that: Two plungers (34) are fixedly mounted at the bottom of the pressure-bearing arm (33). The plungers (34) are slidably mounted on the air chamber (14) in the sleeve (13). The side of the plunger (34) fits the inner wall of the air chamber (14). The bottom of the air chamber (14) is connected to an air hole I (15). The top of the buffer (32) is connected to an air hole II (35). The air hole I (15) and the air hole II (35) are connected via a hose.

9. The falling stabilization device for a surveying and mapping UAV according to claim 8 is characterized in that: The bottom of the sleeve (13) is provided with a receiving groove (16) for receiving a hose.

10. The falling stabilization device for a surveying and mapping UAV according to claim 1 is characterized in that: The torsion positioning component comprises a positioning ring (22) and a sleeve ring (23); the positioning ring (22) is fixedly mounted on the rotating shaft of the buffer leg (21); the positioning ring (22) and the sleeve ring (23) are connected via a torsion spring; and the sleeve ring (23) is detachably fixedly mounted on the rotating seat (12).

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