Take-off and landing vibration reduction structure of unmanned aerial vehicle

Abstract

The utility model provides an unmanned aerial vehicle takeoff and landing vibration reduction structure and belongs to the technical field of unmanned aerial vehicles. Comprising a damping base assembled at the bottom of the unmanned aerial vehicle, a pair of foot rods are assembled at the bottom of the damping base side by side, and a plurality of conical thorns are uniformly arranged at the bottoms of the pair of foot rods; the foot rod comprises a horizontally-arranged upper foot plate, a lower foot plate arranged below the upper foot plate and a rubber block clamped between the lower foot plate and the upper foot plate, the conical thorn is fixed to the lower surface of the lower foot plate, a first pressure relief hole and a second pressure relief hole are formed in the rubber block, the first pressure relief hole penetrates through the rubber block in the width direction of the rubber block, and the second pressure relief hole penetrates through the rubber block in the width direction of the rubber block. The second pressure relief hole penetrates through the rubber block in the length direction of the rubber block. The unmanned aerial vehicle has good damping and buffering effects and ground gripping performance, and the phenomenon that the unmanned aerial vehicle is damaged due to the fact that the landing impact force of the unmanned aerial vehicle is too large or the unmanned aerial vehicle slides and rolls on the ground can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, and particularly relates to a landing shock absorption structure for an unmanned aerial vehicle. Background Art

[0002] With the continuous progress of artificial intelligence technology, as well as the continuous development of computer technology and automatic control technology, unmanned aerial vehicles have higher autonomous flight capabilities and stability, and can perform diverse tasks in complex environments, being widely used in military, civilian, and commercial fields, etc. Since a relatively large impact force will be generated when an unmanned aerial vehicle lands, it accelerates the wear of the unmanned aerial vehicle. Furthermore, the unmanned aerial vehicle needs to be equipped with shock-absorbing landing gears.

[0003] In the prior art, the utility model with the application number 202322352590.1 provides a landing shock absorption structure for an unmanned aerial vehicle, including a shock absorption mechanism. When the unmanned aerial vehicle lands, the shock absorption mechanism will sense vibration signals, monitor the vibration intensity through a pressure sensor and an accelerometer, can quickly respond to the landing situation, reduce the impact and vibration during the landing process, convert the vibration energy of the airframe into kinetic energy through a piston shock absorption mechanism to achieve effective utilization of energy, and disperse and consume it through the coordinated action of a slider and a balance rod. The rubber head will deform under the pressure of the piston head, and a part of the vibration energy is stored during this deformation process, thus achieving the effect of vibration energy absorption. When the piston head moves upward, the elasticity of the rubber head will release the energy stored previously, and the release of this energy gradually weakens during the landing process, thus playing a role of buffering and shock absorption.

[0004] However, it is found in the actual application process of unmanned aerial vehicles that the surfaces of the support rods in direct contact with the ground at the bottom of existing unmanned aerial vehicle frames, including this technical solution, are generally smooth, and the ground gripping performance is weak. When the unmanned aerial vehicle lands in a forward state, although it has a shock absorption and buffering effect, the unmanned aerial vehicle has a certain forward inertia, and there will be a phenomenon that the unmanned aerial vehicle slides on the ground or even causes the unmanned aerial vehicle to roll over, resulting in damage to components such as the wings of the unmanned aerial vehicle. Therefore, this application provides a landing shock absorption structure for an unmanned aerial vehicle to meet the requirements. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a landing shock absorption structure for an unmanned aerial vehicle to solve the existing problems.

[0006] To solve the above technical problems, the utility model provides the following technical solutions:

[0007] A landing shock absorption structure for an unmanned aerial vehicle, including a shock absorption base assembled at the bottom of the unmanned aerial vehicle. A pair of foot rods are assembled side by side at the bottom of the shock absorption base, and a plurality of conical spikes are arranged at the bottom of each of the pair of foot rods, and the conical spikes are evenly arranged.

[0008] Optionally, the foot rod includes an upper foot plate arranged horizontally, a lower foot plate arranged below the upper foot plate, and a rubber block clamped between the lower foot plate and the upper foot plate, and the conical spike is fixed on the lower surface of the lower foot plate.

[0009] Optionally, a first pressure relief hole and a second pressure relief hole are formed in the rubber block. The first pressure relief hole penetrates through the rubber block along the width direction of the rubber block, and the second pressure relief hole penetrates through the rubber block along the length direction of the rubber block.

[0010] Optionally, a plurality of the first pressure relief holes are uniformly arranged, and the second pressure relief hole communicates with the plurality of first pressure relief holes.

[0011] Optionally, the conical spike is made of rubber, and a convex column for embedding the conical spike is arranged at the bottom of the lower foot plate.

[0012] Optionally, the shock-absorbing base includes an upper mounting plate and a lower mounting plate arranged below the upper mounting plate. A shock absorber is connected between the corners of the lower mounting plate and the upper mounting plate. A spring is sleeved on the shock absorber, and a mounting hole is formed in the upper mounting plate.

[0013] Optionally, a pair of support main rods are arranged on both sides of the bottom of the lower mounting plate opposite to the foot rod. One ends of the two pairs of support main rods away from the lower mounting plate are respectively connected to a pair of foot rods.

[0014] Optionally, a connecting ear block is arranged at one end of the support main rod away from the lower mounting plate, and the connecting ear block is bolted to the upper foot plate.

[0015] Optionally, a first support sub-rod is connected between a pair of support main rods connecting the same foot rod.

[0016] Optionally, the support main rod is hinged to the lower mounting plate. The two teams of support main rods expand towards the side away from the lower mounting plate, and a second support sub-rod is connected between the two teams of support main rods. The second support sub-rod is equally divided into two sections, and a double-headed damping pull rod is assembled between the two sections of the second support sub-rod.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] In the above solution, through the cooperation of the shock absorber and the spring assembled between the corners of the upper mounting plate and the lower mounting plate, when the drone lands on the ground, it can play an effective role in buffering and shock absorption, avoiding the phenomenon that the drone is damaged due to excessive landing impact force.

[0019] By setting a number of cone spikes at the bottom of the foot rod, the grip performance is enhanced. When the UAV lands, the phenomenon of sliding and rolling on the ground to cause damage to the UAV can be avoided as much as possible. In addition, the foot rod is composed of an upper foot plate, a rubber block and a lower foot plate, and the first pressure relief hole and the second pressure relief hole are opened on the rubber block. This special structural design can also play a buffering and unloading effect at the moment of landing of the UAV, thereby reducing the impact force on the UAV body.

[0020] Through the design of two pairs of supporting main rod expansion structures, the hinged connection between the supporting main rod and the lower mounting plate, and the double-headed damping pull rod set in the middle of the second supporting auxiliary rod, it is not only conducive to the smooth landing of the UAV, but also can further play a buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the present invention.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the UAV landing and vibration reduction structure;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 It is a schematic diagram of the partial cross-section structure of the foot rod;

[0025] Figure 4 is a schematic diagram of the partial structure of the second supporting auxiliary rod;

[0026] Figure 5 This is a schematic diagram of the structure used in UAVs.

[0027] [reference numerals]

[0028] 1. Shock-absorbing base; 2. Foot rod; 3. Support main rod; 4. Connecting ear block; 5. First supporting auxiliary rod; 6. Second supporting auxiliary rod; 7. Upper mounting plate; 8. Lower mounting plate; 9. Mounting hole; 10. Shock absorber; 11. Spring; 12. Upper foot plate; 13. Rubber block; 14. Lower foot plate; 15. First pressure relief hole; 16. Second pressure relief hole; 17. Cone spike; 18. Boss; 19. Double-head damping rod.

[0029] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. Detailed implementation mode

[0030] The following will combine the accompanying drawings and specific embodiments to describe in detail a drone landing and vibration damping structure provided by the present utility model. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present utility model.

[0031] It should be pointed out that in the specification, when referring to "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc., it indicates that the described embodiment may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, when combining an embodiment to describe a specific feature, structure or characteristic, implementing such a feature, structure or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge scope of those skilled in the relevant art.

[0032] Generally, the terms can be understood at least in part from their use in the context. For example, at least in part depending on the context, the term "one or more" used herein can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. In addition, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, allowing for the existence of other factors that are not necessarily explicitly described.

[0033] It can be understood that the meanings of "on...", "above...", and "overhead of..." in the present utility model should be interpreted in the broadest manner, so that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intermediate features or layers therebetween, and "above..." or "overhead of..." not only means "above" or "overhead of" something, but also can include the meaning of being "above" or "overhead of" something with no intermediate features or layers therebetween.

[0034] In addition, spatial relative terms such as "beneath...", "below...", "lower part", "above...", "upper part", etc. are used herein for convenience of description to describe the relationship between one element or feature and another or more elements or features, as shown in the accompanying drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device other than the orientation depicted in the accompanying drawings. The device can be oriented in other ways, and the spatial relative descriptive words used herein can be correspondingly interpreted similarly.

[0035] AsFigure 1 and Figure 2 As shown, the embodiment of the utility model provides a UAV landing vibration reduction structure, including a shock absorbing base 1 assembled at the bottom of the UAV, the shock absorbing base 1 includes an upper mounting plate 7 and a lower mounting plate 8 arranged below the upper mounting plate 7, a shock absorber 10 is connected between the lower mounting plate 8 and the corner of the upper mounting plate 7, a spring 11 is mounted on the shock absorber 10, and a mounting hole 9 is provided on the upper mounting plate 7. The mounting hole 9 is used to assemble the upper mounting plate 7 at the bottom of the UAV. Through the cooperation of the shock absorber 10 and the spring 11 assembled between the corners of the upper mounting plate 7 and the lower mounting plate 8, when the UAV lands on the ground, it can play an effective buffering and shock absorbing role, avoiding the phenomenon that the UAV is damaged due to excessive impact force when landing. Further, a pair of foot rods 2 are arranged side by side at the bottom of the shock absorbing base 1, and the bottom of the pair of foot rods 2 are both provided with cone spikes 17, which enhance the grip performance. When the UAV lands, it can avoid the phenomenon that the UAV slides and rolls on the ground and causes damage to the UAV as much as possible.

[0036] like Figures 1 to 3 As shown, there are several cone thorns 17 evenly arranged, the foot rod 2 includes a horizontally arranged upper foot plate 12, a lower foot plate 14 arranged below the upper foot plate 12, and a rubber block 13 sandwiched between the lower foot plate 14 and the upper foot plate 12, the cone thorn 17 is fixed to the lower surface of the lower foot plate 14, and the rubber block 13 is provided with a first pressure relief hole 15 and a second pressure relief hole 16. The first pressure relief hole 15 penetrates the rubber block 13 along the width direction of the rubber block 13, and the second pressure relief hole 16 penetrates the rubber block 13 along the length direction of the rubber block 13. There are multiple first pressure relief holes 15 evenly arranged, and the second pressure relief hole 16 is connected to multiple first pressure relief holes 15. The special structural design can play a buffering and unloading effect at the moment of the UAV landing, thereby improving the safety of the UAV landing. Among them, the cone spike 17 is made of rubber material, and a convex column 18 embedded in the cone spike 17 is set at the bottom of the bottom plate 14. The cone spike 17 made of rubber material can play a certain buffering effect to avoid hard collision with the ground. The setting of the convex column 18 can improve the strength of the connection between the cone spike 17 and the bottom plate 14.

[0037] like Figure 1 and Figure 4As shown, a pair of supporting main rods 3 are provided on both sides of the bottom of the lower mounting plate 8 opposite to the foot rod 2, and the ends of the two pairs of supporting main rods 3 away from the lower mounting plate 8 are respectively connected to a pair of foot rods 2, and the ends of the supporting main rods 3 away from the lower mounting plate 8 are provided with connecting ear blocks 4, and the connecting ear blocks 4 are bolted to the upper foot plate 12. A first supporting secondary rod 5 is connected between the pair of supporting main rods 3 connected to the same foot rod 2, which can improve the strength of the supporting main rod 3. The supporting main rod 3 is hinged to the lower mounting plate 8, and the two teams of supporting main rods 3 are expanded toward the side away from the lower mounting plate 8, and a second supporting secondary rod 6 is connected between the two teams of supporting main rods 3, and the second supporting secondary rod 6 is divided into two sections, and a double-headed damping pull rod 19 is installed between the two sections of the second supporting secondary rod 6. Through this structural method, it is beneficial to the smooth landing of the drone and can also play a buffering effect.

[0038] The working principle of the technical solution provided by the utility model is as follows:

[0039] When in use, the shock absorber 10 and the spring 11 assembled between the corners of the upper mounting plate 7 and the lower mounting plate 8 cooperate to play an effective buffering and shock absorbing role when the drone lands on the ground, avoiding the phenomenon that the drone is damaged due to excessive impact force when landing. Furthermore, by arranging a plurality of cone spikes 17 at the bottom of the foot rod 2, the grip performance is enhanced. When the drone lands, the phenomenon that the drone slides and rolls on the ground and causes damage to the drone can be avoided as much as possible. In addition, the foot rod 2 is composed of an upper foot plate 12, a rubber block 13 and a lower foot plate 14, and the first pressure relief hole 15 and the second pressure relief hole 16 are opened on the rubber block 13. This special structural design can also play a buffering and unloading effect at the moment of the drone landing. Furthermore, the expansion structure design of the two pairs of supporting main rods 3, the hinged connection between the supporting main rod 3 and the lower mounting plate 8, and the double-headed damping pull rod 19 arranged in the middle of the second supporting auxiliary rod 6 are not only conducive to the smooth landing of the drone, but also can further play a buffering effect to ensure the safe landing of the drone.

[0040] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A shock - absorbing structure for the take - off and landing of an unmanned aerial vehicle, comprising a shock - absorbing base assembled at the bottom of the unmanned aerial vehicle, characterized in that: A pair of foot rods are assembled side by side at the bottom of the shock - absorbing base, and a plurality of conical spikes are provided at the bottom of each of the pair of foot rods, and the conical spikes are evenly arranged.

2. The drone landing and takeoff shock absorption structure according to claim 1, wherein, The foot rod includes an upper foot plate arranged horizontally, a lower foot plate arranged below the upper foot plate, and a rubber block clamped between the lower foot plate and the upper foot plate, and the conical spike is fixed on the lower surface of the lower foot plate.

3. The drone landing vibration damping structure according to claim 2, characterized in that, The rubber block is provided with a first pressure - relief hole and a second pressure - relief hole. The first pressure - relief hole penetrates the rubber block along the width direction of the rubber block, and the second pressure - relief hole penetrates the rubber block along the length direction of the rubber block.

4. The drone landing vibration damping structure according to claim 3, wherein A plurality of the first pressure - relief holes are evenly arranged, and the second pressure - relief hole communicates with the plurality of first pressure - relief holes.

5. The drone landing and takeoff shock absorption structure according to claim 2, characterized in that, The conical spike is made of rubber material, and a convex column for embedding the conical spike is provided at the bottom of the lower foot plate.

6. The drone landing and takeoff shock absorption structure according to claim 2, characterized in that, The shock - absorbing base includes an upper mounting plate and a lower mounting plate arranged below the upper mounting plate. A shock absorber is connected between the corners of the lower mounting plate and the upper mounting plate. A spring is sleeved on the shock absorber, and mounting holes are provided on the upper mounting plate.

7. The drone landing vibration damping structure according to claim 6, characterized in that A pair of main support rods are provided on both sides of the bottom of the lower mounting plate opposite to the foot rods, and the ends of the two pairs of main support rods away from the lower mounting plate are respectively connected to a pair of foot rods.

8. The drone landing and takeoff shock absorption structure according to claim 7, wherein, The end of the main support rod away from the lower mounting plate is provided with a connecting ear block, and the connecting ear block is bolt - connected to the upper foot plate.

9. The drone landing vibration damping structure according to claim 7, wherein, A first auxiliary support rod is connected between the pair of main support rods connecting the same foot rod.

10. The drone landing and takeoff shock absorption structure according to claim 7, characterized in that, The main support rod is hinged to the lower mounting plate. The two pairs of main support rods expand towards the side away from the lower mounting plate, and a second auxiliary support rod is connected between the two pairs of main support rods. The second auxiliary support rod is equally divided into two sections, and a double - end damping pull rod is assembled between the two sections of the second auxiliary support rod.

Images