Inspection unmanned aerial vehicle with good damping effect

Abstract

The invention discloses an inspection unmanned aerial vehicle with a good damping effect, and relates to the technical field of damping of unmanned aerial vehicles. The unmanned aerial vehicle comprises an unmanned aerial vehicle body, two supporting frames are fixedly connected to the two sides of the unmanned aerial vehicle body correspondingly, connecting plates are fixedly connected to the bottom ends of the supporting frames correspondingly, supporting plates are arranged below the two supporting frames correspondingly, and buffering assemblies are arranged between the connecting plates and the supporting plates and used for damping the unmanned aerial vehicle body; when impact force vertically acts on the top end of the connecting plate, the first damping spring rapidly absorbs the impact force by means of the elastic deformation characteristic of the first damping spring, high-frequency vibration generated by impact of the unmanned aerial vehicle body is effectively reduced, meanwhile, the residual impact force is stably transmitted to the first mounting base, and the second damping spring is promoted to be compressed; the impact energy is secondarily absorbed through elastic deformation of the two-stage spring, the double damping effect is achieved through the linkage damping mechanism of the two-stage spring, the protection performance of the unmanned aerial vehicle is further enhanced, and the overall damping efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration reduction of unmanned aerial vehicles (UAVs), and in particular to an inspection UAV with good vibration reduction effect. Background Art

[0002] In the field of modern industry and infrastructure maintenance, drone inspections have become an important means of ensuring the safe operation of facilities in many industries such as electricity, oil, and transportation due to their advantages of high efficiency, convenience, and the ability to operate in dangerous areas. By being equipped with high-definition cameras, infrared sensors, lidars and other detection equipment, drones can quickly obtain high-precision data and conduct comprehensive and detailed inspections of target facilities, greatly improving inspection efficiency and reducing labor costs and safety risks. Especially in complex terrain or high-altitude operation scenarios, their flexible maneuverability and real-time data feedback function provide more reliable technical support for hidden danger detection.

[0003] However, during take-off and landing, traditional inspection drones usually use simple fixed brackets or rubber foot pads as shock-absorbing devices. When the drone takes off and lands on uneven ground, roofs and other complex sites, the traditional shock-absorbing structure cannot effectively buffer the impact caused by the height difference and the ground reaction force. The large impact force will directly act on the drone body and internal precision electronic components and cause damage. In addition, the shock-absorbing performance of traditional shock-absorbing devices is often fixed and cannot be adaptively adjusted according to the impact force of different take-off and landing scenarios, further weakening its shock-absorbing effect. In response to the above problems, the inventors proposed an inspection drone with good shock-absorbing effect to solve the above problems. Summary of the Invention

[0004] In order to solve the problem of poor shock absorption effect of inspection drones, the purpose of the present invention is to provide an inspection drone with good shock absorption effect.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a patrol drone with good shock absorption effect, including a drone body, two support frames are fixedly connected on both sides of the drone body, the bottom ends of the support frames are fixedly connected with connecting plates, and support plates are arranged below the two support frames. A buffer assembly is arranged between the connecting plate and the support plate, and the buffer assembly is used to reduce shock for the drone body. A preload adjustment assembly and a height adjustment assembly are arranged on the side of the top of the support plate close to the buffer assembly. The preload adjustment assembly is used to adjust the preload of the buffer assembly, and the height adjustment assembly is used to adjust the center of gravity height of the drone body.

[0006] The top end face of said sliding arm is fixedly provided with a toothed connecting strip which is cooperatively connected with said toothed connecting strip, and the toothed connecting strip is connected with said toothed connecting strip to form a bottom surface.

[0007] Preferably, the preload adjustment assembly includes several plates, which are fixedly connected to the top of the drone body, and the bottom end of the inner wall of the several plates is rotatably connected to an adjustment knob, the internal thread of the adjustment knob is connected to a threaded rod, and the bottom end of the threaded rod is fixedly connected to the second mounting seat, and a through hole is opened in the middle of the top of the several plates, and the top end of the threaded rod movably passes through the through hole.

[0008] Preferably, thread grooves are provided on the outer sides of both ends of the rotating rod, and the two thread grooves are symmetrically distributed. The slide plate is threadedly connected to the outer sides of the thread grooves, and one end of the thread groove extends to one side of the fixed plate and is fixedly connected to the turning handle.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. When an impact force acts vertically on the top of the connecting plate, damping spring 1 quickly absorbs the impact force through its own elastic deformation characteristics, effectively reducing the high-frequency vibration of the drone body caused by the impact. At the same time, it stably transmits the residual impact force to mounting base 1, causing damping spring 2 to be compressed and utilize its elastic deformation to absorb the impact energy for a second time. This dual-stage spring linkage shock absorption mechanism achieves a dual shock absorption effect, further strengthening the protection performance of the drone and significantly improving the overall shock absorption efficiency.

[0011] 2. Slowly turn the adjustment knob while holding the second mounting base steadily with one hand to force the threaded rod to move vertically along the inside of the adjustment knob. With the help of the plate limiting the adjustment knob, push the second mounting base toward or away from the second damping spring, compressing the second damping spring. Accurately adjust the preload of the second damping spring according to the weight of the drone body to effectively improve the shock absorption effect.

[0012] 3. By rotating the rotating rod clockwise or counterclockwise, the principle of thread transmission is used to synchronously drive the two slides to move symmetrically along the outside of the thread groove, causing them to slide away from or towards each other. During this process, the slides will synchronously push the two connecting plates on one side to move vertically, thereby accurately adjusting the center of gravity height of the drone body, effectively enhancing the stability of the device when placed, and ensuring that it can remain stable in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the local structure of the present invention.

[0016] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0017] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle.

[0018] Figure 5 It is a schematic diagram of the partial split structure of the present invention.

[0019] In the figure: 1. UAV body; 2. Support frame; 3. Connecting plate; 4. Support plate; 5. Buffer assembly; 51. Fixed plate; 52. Rotating rod; 53. Slider; 54. Connecting rod 1; 55. Damping rod; 56. Slide plate; 57. Damping spring 1; 58. Connecting rod 2; 59. Mounting seat 1; 510. Mounting seat 2; 511. Damping spring 2; 6. Preload adjustment assembly; 61. Plate; 62. Adjustment knob; 63. Threaded rod; 64. Through hole; 7. Height adjustment assembly; 71. Threaded groove; 72. Turn handle. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example: Figure 1-5 As shown, the present invention provides an inspection drone with good shock absorption effect, including a drone body 1, two support frames 2 are fixedly connected to both sides of the drone body 1, the bottom ends of the support frames 2 are fixedly connected to connecting plates 3, support plates 4 are arranged below the two support frames 2, and a buffer assembly 5 is arranged between the connecting plate 3 and the support plate 4. The buffer assembly 5 is used to reduce shock for the drone body 1, and a preload adjustment assembly 6 and a height adjustment assembly 7 are arranged on the side of the top of the support plate 4 close to the buffer assembly 5. The preload adjustment assembly 6 is used to adjust the preload of the buffer assembly 5, and the height adjustment assembly 7 is used to adjust the center of gravity height of the drone body 1.

[0022] The buffer assembly 5 includes two fixed plates 51, which are fixedly connected to the top of the support plate 4. A rotating rod 52 is rotatably connected between the two fixed plates 51. Two symmetrically distributed sliders 53 are movably provided on the outer side of the rotating rod 52. The top of the slider 53 is rotatably connected to two connecting rods 54. The top of the connecting rod 54 is rotatably connected to the corresponding connecting plate 3. A damping rod 55 is rotatably connected to one side of the bottom end of the connecting plate 3. A slide plate 56 is slidably engaged with the side of the top of the support plate 4 close to the slide plate 53. The bottom end of the damping rod 55 is rotatably connected to the slide plate 56, and a damping spring 57 is movably sleeved on the outer side of the damping rod 55.

[0023] When the drone body 1 encounters ground reaction force during takeoff and landing, the force will be transmitted to the top of the connecting plate 3 through the body structure, pushing it to move downward along the guide track. During this process, the connecting plate 3 synchronously compresses the piston structure of the damping rod 55 and the damping spring 57: the damping rod 55 consumes impact energy through the throttling effect of hydraulic oil or gas, while the damping spring 57 relies on the elastic deformation of the spiral steel ring to absorb kinetic energy, converting the mechanical impact into the elastic potential energy of the spring. When this dual damping structure works together, the linear elastic deformation of the damping spring 57 can quickly buffer high-frequency vibrations, and cooperate with the nonlinear damping force of the damping rod 55 to suppress low-frequency and large-scale impacts. Through the dual mechanisms of energy dissipation and elastic buffering, the vibration amplitude of the device itself is effectively reduced, avoiding damage to the core components of the drone caused by impact loads, and at the same time ensuring the stable operation of the onboard equipment during takeoff and landing.

[0024] The top of the slider 53 is rotatably connected to the side of the connecting rod 1 54, and the top of the two connecting rods 2 58 is rotatably connected to the mounting seat 1 59. A mounting seat 2 510 is provided above the mounting seat 1 59, and a damping spring 2 511 is fixedly connected between the mounting seat 1 59 and the mounting seat 2 510.

[0025] By adopting the above technical solution, when the connecting plate 3 moves downward along the guide structure, the connecting rod 2 58 hinged at its lower end will form a lever transmission structure with the hinge point as the fulcrum, and the impact force will be transmitted to the force-bearing end face of the mounting seat 1 59 through the rigidity of the rod body. A sliding guide rail is provided at the bottom of the mounting seat 1 59, which moves horizontally along the guide rail to the side where the damping spring 2 511 is located under the action of the impact force. At this time, the fixed supports at both ends of the spring and the mounting seat 1 59 form a relative compression stroke. The damping spring 2 511 adopts a spiral cylindrical spring structure. During the compression process, the steel wire produces The impact kinetic energy is absorbed by the storage of elastic potential energy, and its linear elastic characteristics can provide stable buffering force for medium and low frequency impacts. In this process, the rigid transmission of the connecting rod 2 58 ensures that the impact force is efficiently transmitted to the secondary shock absorbing unit, and the deformation buffering of the damping spring 2 511 and the primary shock absorption of the previous damping rod 55 and the damping spring 1 57 form a series shock absorption chain. Through the sequential energy dissipation of the dual elastic elements, the impact load is gradually attenuated, effectively avoiding structural damage to key components or failure of electronic components due to rigid impact.

[0026] The preload force adjustment assembly 6 includes a plate 61, which is fixedly connected to the top of the drone body 1. The bottom end of the inner wall of the plate 61 is rotatably connected to an adjustment knob 62. The internal thread of the adjustment knob 62 is connected to a threaded rod 63. The bottom end of the threaded rod 63 is fixedly connected to the mounting seat 510. A through hole 64 is opened in the middle of the top of the plate 61, and the top of the threaded rod 63 movably passes through the through hole 64.

[0027] By adopting the above technical solution, when the weight of the drone body 1 changes due to the addition or removal of modules, its center of gravity and load distribution will change synchronously. At this time, the adaptive preload adjustment mechanism can be triggered by rotating the adjustment knob 62. The adjustment knob 62 has an internal threaded hole that matches the threaded rod 63. When the knob is turned, the threaded rod 63 is constrained by the limit groove of the plate 61 and can only move axially in the vertical direction. The lower end of the threaded rod 63 is connected to the second mounting seat 510 via a ball joint. Its vertical displacement is converted into lateral movement of the second mounting seat 510 on the horizontal guide rail. When the drone gains weight, turning the knob clockwise presses the threaded rod downward, pushing the second mounting seat 510 towards the second damping spring 511, compressing the spring and increasing its preload. When the drone loses weight, turning the knob counterclockwise pulls the threaded rod upward, driving the second mounting seat 510 away from the spring, thereby reducing the preload. The initial compression of the second damping spring 511 is dynamically matched to the actual weight of the drone, adjusting the spring stiffness to the optimal shock absorption range, ensuring that the shock absorption system maintains efficient buffering performance throughout the full load range.

[0028] Thread grooves 71 are formed on the outer sides of both ends of the rotating rod 52 . The two thread grooves 71 are symmetrically distributed, and the slide plate 56 is threadedly connected to the outer sides of the thread grooves 71 .

[0029] By adopting the above technical solution, when the center of gravity position of the drone changes, the operator can activate the adjustment mechanism by rotating the rotating rod 52. The rotating rod 52 forms a linkage structure with the thread groove 71. When it rotates, it will drive the two slides 56 to move symmetrically along the outer side of the thread groove 71. When the rotating rod rotates clockwise, the two slides slide to the side away from each other; when it rotates counterclockwise, they move closer to each other. During the movement of the slide, the push block at its front end will synchronously act on the connecting plate 3, pushing the two connecting plates on one side to move vertically through the connecting rod mechanism, thereby accurately adjusting the center of gravity height of the drone body 1. For example, when the drone carries heavy equipment and causes the center of gravity to shift, the center of gravity can be readjusted to the ideal range by raising or lowering the position of the connecting plate 3. This mechanism can not only maintain a stable posture during flight, but also enhance the balance of the bottom support by optimizing the center of gravity height when the equipment is placed, effectively avoiding the risk of rollover caused by center of gravity shift, and significantly improving the stability of the drone when it is statically placed.

[0030] One end of the thread groove 71 extends to one side of the fixing plate 51 and is fixedly connected to a turning handle 72 .

[0031] By adopting the above technical solution, by setting the turning handle 72, a convenient force point is provided for rotating the adjusting thread groove 71. The operator can directly hold the turning handle 72 to apply torque, which is more labor-saving than directly rotating the thread groove 71, and can accurately control the rotation angle, thereby improving adjustment efficiency and operational convenience.

[0032] The lengths of the two corresponding connecting rods 54 are equal and they are distributed in parallel.

[0033] By adopting the above technical solution, by setting the corresponding two connecting rods 54 to be equal in length and distributed in parallel, a stable parallelogram linkage structure is constructed. When the connecting plate 3 moves vertically, the equal-length parallel connecting rods 54 will synchronously transmit the displacement, ensuring that the connecting plate 3 always maintains a parallel posture with the support plate 4 during the lifting process.

[0034] Working principle: During the take-off and landing process of the inspection UAV, when the UAV body 1 encounters a ground reaction force during the take-off and landing process, the force will be transmitted to the top of the connecting plate 3 through the body structure, pushing it to move downward along the guide track. During this process, the connecting plate 3 synchronously compresses the piston structure of the damping rod 55 and the damping spring 57: the damping rod 55 consumes the impact energy through the throttling effect of the hydraulic oil or gas, while the damping spring 57 relies on the elastic deformation of the spiral steel ring to absorb kinetic energy, and converts the mechanical impact into the elastic potential energy of the spring. When this dual damping structure works together, the linear elastic deformation of the damping spring 57 can quickly buffer high-frequency vibrations, and cooperate with the nonlinear damping force of the damping rod 55 to suppress low-frequency and large-scale impacts. Through the dual mechanisms of energy dissipation and elastic buffering, the vibration amplitude of the device itself is effectively reduced, and the impact load is prevented from causing damage to the core components of the UAV, while ensuring the stable operation of the carried equipment during take-off and landing.

[0035] The second damping spring 511 is a spring loaded element which is pivotally connected to the first damping spring 511 and which is pivotally connected to the second damping spring 511. The second damping spring 511 is a spring loaded element which is pivotally connected to the first damping spring 511 and which is pivotally connected to the second damping spring 511.

[0036] When the weight of the drone body 1 changes due to the addition or removal of modules, its center of gravity and load distribution will change synchronously. At this time, the adaptive preload adjustment mechanism can be triggered by rotating the adjustment knob 62. An internal threaded hole matching the threaded rod 63 is provided inside the adjustment knob 62. When the knob is turned, the threaded rod 63 is constrained by the limit groove of the plate 61 and can only move axially in the vertical direction. The lower end of the threaded rod 63 is connected to the second mounting seat 510 through a ball joint. Its vertical displacement will be converted into a lateral movement of the second mounting seat 510 on the horizontal guide rail. When the drone gains weight, the knob is turned clockwise to press the threaded rod downward, pushing the second mounting seat 510 close to the second damping spring 511, compressing the spring to increase its preload; when the weight is reduced, the knob is turned counterclockwise, the threaded rod is lifted and drives the second mounting seat away from the spring, and the preload is reduced accordingly, so that the initial compression of the second damping spring 511 is dynamically matched with the actual weight of the drone, and the spring stiffness is adjusted to the optimal shock absorption range, ensuring that the shock absorption system maintains efficient buffering performance within the full load range;

[0037] In addition, when the center of gravity of the drone changes, the operator can activate the adjustment mechanism by rotating the rotating rod 52. The rotating rod 52 forms a linkage structure with the thread groove 71. When it rotates, it will drive the two slides 56 to move symmetrically along the outer side of the thread groove 71. When the rotating rod rotates clockwise, the two slides slide to the side away from each other; when it rotates counterclockwise, they move closer to each other. During the movement of the slide, the push block at its front end will synchronously act on the connecting plate 3, pushing the two connecting plates on one side to move vertically through the connecting rod mechanism, thereby accurately adjusting the center of gravity height of the drone body 1. For example, when the drone carries heavy equipment and causes the center of gravity to shift, the center of gravity can be readjusted to the ideal range by raising or lowering the position of the connecting plate 3. This mechanism can not only maintain a stable posture during flight, but also enhance the balance of the bottom support by optimizing the center of gravity height when the equipment is placed, effectively avoiding the risk of rollover caused by center of gravity shift, and significantly improving the stability of the drone when it is statically placed.

[0038] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A patrol drone with good shock absorption effect, comprising a drone body (1), characterized in that: Two support frames (2) are fixedly connected to both sides of the unmanned aerial vehicle (1), and the bottom ends of the support frames (2) are fixedly connected to connecting plates (3). Support plates (4) are provided below the two corresponding support frames (2), and a buffer assembly (5) is provided between the connecting plates (3) and the support plates (4). The buffer assembly (5) is used to reduce shock for the unmanned aerial vehicle (1). A preload adjustment assembly (6) and a height adjustment assembly (7) are provided on the top of the support plate (4) near the side of the buffer assembly (5). The preload adjustment assembly (6) is used to adjust the preload of the buffer assembly (5), and the height adjustment assembly (7) is used to adjust the center of gravity height of the unmanned aerial vehicle (1).

2. The inspection drone with good shock absorption effect according to claim 1, characterized in that: The buffer assembly (5) includes two fixed plates (51), the fixed plates (51) are fixedly connected to the top ends of the support plates (4), a rotating rod (52) is rotatably connected between the two fixed plates (51), two symmetrically distributed sliders (53) are movably provided on the outer sides of the rotating rod (52), the top ends of the sliders (53) are rotatably connected to two connecting rods (54), the top ends of the connecting rods (54) are rotatably connected to the corresponding connecting plates (3), a damping rod (55) is rotatably connected to one side of the bottom end of the connecting plate (3), a slide plate (56) is slidably engaged on the side of the top end of the support plate (4) close to the slide plate (53), the bottom end of the damping rod (55) is rotatably connected to the slide plate (56), and a damping spring (57) is movably sleeved on the outer side of the damping rod (55).

3. The inspection drone with good shock absorption effect as claimed in claim 2, characterized in that: The top of the slider (53) is rotatably connected to the side of the connecting rod 1 (54) by the connecting rod 2 (58), and the tops of the two connecting rods 2 (58) are rotatably connected to the mounting seat 1 (59). The mounting seat 2 (510) is arranged above the mounting seat 1 (59), and the damping spring 2 (511) is fixedly connected between the mounting seat 1 (59) and the mounting seat 2 (510).

4. The inspection drone with good shock absorption effect according to claim 1, characterized in that: The preload force adjustment assembly (6) includes a plate (61) fixedly connected to the top of the drone body (1); the bottom end of the inner wall of the plate (61) is rotatably connected to an adjustment knob (62); the internal thread of the adjustment knob (62) is connected to a threaded rod (63); the bottom end of the threaded rod (63) is fixedly connected to the second mounting seat (510); a through hole (64) is opened in the middle of the top of the plate (61); the top end of the threaded rod (63) movably passes through the through hole (64).

5. The inspection drone with good shock absorption effect as claimed in claim 2, characterized in that: The outer sides of both ends of the rotating rod (52) are provided with thread grooves (71), the two thread grooves (71) are symmetrically distributed, and the slide plate (56) is threadedly connected to the outer sides of the thread grooves (71).

6. The inspection drone with good shock absorption effect as claimed in claim 5, characterized in that: One end of the thread groove (71) extends to one side of the fixed plate (51) and is fixedly connected to a turning handle (72).

7. The inspection drone with good shock absorption effect as claimed in claim 2, characterized in that: The lengths of the two corresponding connecting rods (54) are equal and distributed in parallel.

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