Protective device for surveying instrument of unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle surveying instrument protection device which comprises a protection device body arranged on an unmanned aerial vehicle body, the protection device body comprises a driving assembly, a protection assembly and a plurality of supporting assemblies, and the supporting assemblies are connected with the unmanned aerial vehicle body and the output end of the driving assembly respectively. The supporting assembly is in a supporting / non-supporting state along with the movement of the output end of the driving assembly; the output end of the driving assembly is further provided with a cradle head, and a surveying instrument is installed on the cradle head. When the unmanned aerial vehicle flies for surveying and mapping, the driving assembly drives the holder and the surveying and mapping instrument to descend and extend out of the protection assembly for surveying and mapping, and meanwhile, the driving assembly drives the supporting assembly to be in a non-supporting state, so that interference to the viewing angle of the surveying and mapping instrument is avoided; when the unmanned aerial vehicle lands after surveying and mapping are completed, the driving assembly drives the holder and the surveying instrument to ascend and retract into the protection assembly, meanwhile, the driving assembly drives the supporting assembly to be in a supporting state, and the surveying instrument is prevented from being damaged during landing.

Description

Technical Field

[0001] The utility model relates to the technical field of UAV mapping, in particular to a protection device for a UAV mapping instrument. Background Technique

[0002] UAV mapping is a powerful supplement to traditional aerial photogrammetry means, with the characteristics of being flexible, efficient, fast, precise, low operation cost, wide application range, short production cycle, etc.

[0003] During the UAV mapping process, in order to ensure that comprehensive and accurate mapping data can be obtained, the UAV needs to hover at a specific position and control the mapping device to rotate 360 degrees around its center point through the pan-tilt system. However, existing UAVs are all equipped with landing support frames, resulting in possible shooting dead angles of the mapping device and affecting the accuracy of mapping data. In addition, most existing UAV mapping devices are of an exposed structure. When the UAV lands after mapping, when the landing support is relatively hard, there may be a landing rebound, causing damage to the mapping device.

[0004] Therefore, it is necessary to provide a protection device for a UAV mapping instrument to solve the problems mentioned in the above background technique. Content of the Utility Model

[0005] To achieve the above object, the utility model provides the following technical solution: A protection device for a UAV mapping instrument, the protection device is arranged on the body of the UAV, and a plurality of arms are evenly distributed on the periphery of the body;

[0006] The protection device includes a driving component, a protection component and a plurality of support components. The driving component is installed in the body, the protection component is located at the lower end of the body and below the driving component; a through hole is opened on the side of the body, and the through hole is located between adjacent arms. The support components are correspondingly arranged at the through holes, and each support component is respectively connected to the body and the output end of the driving component, so that the support component is in a supported / non-supported state as the output end of the driving component moves; a pan-tilt is further arranged at the output end of the driving component, and a mapping instrument is installed on the pan-tilt.

[0007] Wherein, when the UAV is flying for mapping, the driving component drives the pan-tilt and the mapping instrument to descend and extend out of the protection component for mapping. At the same time, the driving component drives the support component to be in a non-supported state to avoid interfering with the viewing angle of the mapping instrument; when the UAV lands after mapping, the driving component drives the pan-tilt and the mapping instrument to rise and retract into the protection component. At the same time, the driving component drives the support component to be in a supported state to avoid damage to the mapping instrument during landing.

[0008] Preferably, the driving component includes:

[0009] A housing installed at the top of the body, a motor is installed on the top of the housing, the housing is in communication with the inside of the body, a lead screw is rotatably arranged inside the housing and extends into the body, the upper end of the lead screw extends out of the housing and is connected to the output end of the motor, and a lifting cylinder is threadedly connected to the lead screw;

[0010] Longitudinal guide grooves are correspondingly provided on the outer peripheral side of the lifting cylinder and the support assembly, and one end of the support assembly is slidably and limitably installed in the guide grooves, and the support assembly can limit the rotation of the lifting cylinder;

[0011] The lower end of the lifting cylinder is provided with a mounting plate for mounting the pan-tilt, a through hole for the pan-tilt to extend out of the body is provided at the bottom end of the body, and the protection assembly is located at the through hole.

[0012] Preferably, the support assembly includes:

[0013] A support arm, the upper part of the support arm is rotatably arranged at the through hole;

[0014] One end of an elastic telescopic rod is hinged to one end of the support arm located inside the body, the other end of the elastic telescopic rod is rotatably provided with a limit block, and the limit block is adapted to the guide groove and can slide up and down along the guide groove.

[0015] Preferably, a limit card slot is provided at the bottom of the guide groove, and the limit card slot is structurally adapted to the limit block for locking the position of the support assembly.

[0016] Preferably, the support arm includes a lower support arm and an upper support arm. One end of the upper support arm located inside the housing is hinged to the end of the elastic telescopic rod. The side surface of the arm body of the upper support arm is rotatably connected to the two side surfaces of the through hole through a rotating shaft. A plurality of sliding cavities are provided on the lower end surface of the upper support arm. The upper end surface of the lower support arm is correspondingly provided with sliding rods, and the sliding rods are slidably and limitably arranged in the sliding cavities;

[0017] A spring is sleeved outside the sliding rod, and the spring is supported between the upper end surface of the lower support arm and the lower end surface of the upper support arm.

[0018] Preferably, the protection assembly includes: a protection cylinder, the protection cylinder is installed at the lower end of the body and is in communication with the inside of the body;

[0019] Sealing plates are hinged to both sides of the lower end of the protection cylinder. Installation seats are correspondingly arranged at intervals between the inner sides of the sealing plates and the inner side of the protection cylinder, and a tension spring is arranged between the installation seats to provide closing power for the two sealing plates.

[0020] Preferably, a flexible layer is adhered to the upper end surface of the sealing plate.

[0021] Preferably, a stopper is provided at the lower end of the lead screw inside the lifting cylinder.

[0022] Compared with the prior art, the utility model provides a protection device for a drone mapping instrument, which has the following beneficial effects:

[0023] In the utility model, a driving component, a protection component and several support components are arranged in the protection mechanism. While controlling the lifting of the mapping instrument through the driving component, the support components are linked to switch between the support state and the non-support state. On the one hand, it can avoid the interference of the support components on the mapping angle of the mapping instrument and improve the mapping accuracy of the mapping instrument; on the other hand, when the protection mechanism protects the mapping instrument during the landing of the drone, the support components can be linked to control the landing buffer, improving the protection ability of the protection mechanism for the mapping instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a protection device for a drone mapping instrument in the mapping state;

[0025] Figure 2 It is a schematic diagram of the main sectional view structure of a protection device for a drone mapping instrument in the mapping state;

[0026] Figure 3 It is a schematic diagram of the structure of a protection device for a drone mapping instrument in the protection state;

[0027] In the figure: 1, airframe; 11, through hole; 2, arm; 3, protection mechanism; 31, housing; 32, lead screw; 33, lifting cylinder; 34, mounting plate; 35, protection cylinder; 36, sealing plate; 37, tension spring; 38, support component; 331, guide groove; 332, limit card slot; 381, elastic telescopic rod; 382, limit block; 383, lower support arm; 384, upper support arm; 385, slide bar; 386, spring; 4, mapping instrument; 5, pan-tilt head. DETAILED DESCRIPTION OF THE INVENTION

[0028] Please refer to Figures 1-3 , the utility model provides a protection device for a drone mapping instrument, including an upper protection device arranged on the airframe 1 of the drone, and a plurality of arms 2 are evenly distributed on the periphery of the airframe 1;

[0029] The protection device includes a driving component, a protection component, and a plurality of support components 38. The driving component is installed in the body 1, and the protection component is located at the lower end of the body 1 and below the driving component. A through hole 11 is formed in the side surface of the body 1, and the through hole 11 is located between adjacent arms 2. The support components 38 are correspondingly arranged at the through hole 11, and each of the support components 38 is respectively connected to the body 1 and the output end of the driving component, so that the support component 38 is in a supported / unsupported state as the output end of the driving component moves. A pan-tilt head 5 is further provided at the output end of the driving component, and a mapping instrument 4 is installed on the pan-tilt head 5.

[0030] Wherein, when the drone is flying for mapping, the driving component drives the pan-tilt head 5 and the mapping instrument 4 to descend and extend out of the protection component for mapping. At the same time, the driving component drives the support component 38 to be in an unsupported state to avoid interfering with the viewing angle of the mapping instrument 4. When the drone finishes mapping and lands, the driving component drives the pan-tilt head 5 and the mapping instrument 4 to rise and retract into the protection component. At the same time, the driving component drives the support component 38 to be in a supported state to avoid damage to the mapping instrument 4 during landing.

[0031] It should be noted that a mobile power source is also configured in the body 1 to supply energy to the driving component and the power device. In the initial state, the support component 38 is in a supported state, the pan-tilt head 5 and the mapping instrument 4 are located in the protection component, and the protection component protects the mapping instrument 4. When controlling the drone to hover for high-precision mapping, the driving component drives the support component 38 to be in an unsupported state to avoid interfering with the viewing angle of the mapping instrument 4. When the mapping is completed and the drone lands, the driving component drives the pan-tilt head 5 and the mapping instrument 4 to rise and retract into the protection component. At the same time, the driving component drives the support component 38 to be in a supported state to avoid accidental damage to the mapping instrument 4 due to impact during landing.

[0032] Specifically, a power device is provided at the end of the arm. The power device at least includes: a propeller and a servo motor for driving the propeller to rotate. The pan-tilt head 5 is a conventional structure and can drive the mapping instrument 4 to adjust at any angle for convenient mapping.

[0033] Further, the driving component includes: a housing 31 installed at the top end of the body 1. A motor is installed on the top of the housing 31. The housing 31 is in communication with the inside of the body 1. A lead screw 32 is rotatably arranged inside the housing 31 and extends into the body 1. The upper end of the lead screw 32 extends out of the housing 31 and is connected to the output end of the motor. A lifting cylinder 33 is threadedly connected to the lead screw 32.

[0034] A guiding groove 331 is longitudinally provided on the outer peripheral side of the lifting cylinder 33 corresponding to the support assembly 38, and one end of the support assembly 38 is slidably and limitedly installed in the guiding groove 331, and the support assembly 38 can limit the rotation of the lifting cylinder 33;

[0035] A mounting plate 34 is arranged at the lower end of the lifting cylinder 33, and the mounting plate 34 is used to mount the pan-tilt 5. A through hole for the pan-tilt 5 to extend out of the body 1 is arranged at the bottom end of the body 1, and the protection assembly is located at the through hole.

[0036] That is to say, the rotation of the lifting cylinder 33 is limited by the support assembly 38, and then the lifting cylinder 33 is driven to move up and down by the rotation of the motor driving the lead screw 32. By adjusting the position of the surveying instrument 4, the protection of the surveying instrument 4 or the adjustment of the surveying state is carried out.

[0037] Preferably, the inner diameter of the mounting plate 34 is adapted to the inner diameter of the protection cylinder 35.

[0038] Further, the support assembly 38 includes:

[0039] A support arm, the upper part of the support arm is rotatably arranged at the through hole 11;

[0040] One end of the support arm located inside the body 1 is hinged to one end of an elastic telescopic rod 381, and the other end of the elastic telescopic rod 381 is rotatably provided with a limit block 382, and the limit block 382 is adapted to the guiding groove 331 and can slide up and down along the guiding groove 331.

[0041] Further, a limit card slot 332 is opened at the bottom of the guiding groove 331, and the limit card slot 332 is structurally adapted to the limit block 382 for locking the position of the support assembly 38.

[0042] Further, the support arm includes a lower support arm 383 and an upper support arm 384. One end of the upper support arm 384 located inside the housing 31 is hinged to the end of the elastic telescopic rod 381. The side surface of the arm body of the upper support arm 384 is rotatably connected to the two side surfaces of the through hole 11 through a rotating shaft. A plurality of sliding cavities are opened on the lower end surface of the upper support arm 384, and sliding rods 385 are correspondingly arranged on the upper end surface of the lower support arm 383. The sliding rods 385 are slidably and limitedly arranged in the sliding cavities;

[0043] A spring 386 is sleeved outside the sliding rod 385, and the spring 386 is supported between the upper end surface of the lower support arm 383 and the lower end surface of the upper support arm 384.

[0044] It should be noted that when the drone is in the surveying and mapping state (the lifting cylinder 33 is at the lower limit position), at this time, each support arm is in a horizontal state, and affected by the guide groove 331 and the limit block 382, the elastic telescopic rod 381 inclines downward, and the support assembly 38 will not affect the surveying and mapping perspective of the surveying instrument 4.

[0045] When the drone lands after the surveying and mapping is completed, the protection component protects the surveying instrument 4. Its driving component drives the surveying instrument 4 to rise into the protection component (the lifting cylinder 33 is at the upper limit position). At this time, each support arm is in a downward inclined support state, the elastic telescopic rod 381 is in a compressed state, and the limit block 382 is located in the limit card slot 332 to lock the support angle of each support assembly 38. Among them, the spring 386 and the elastic telescopic rod 381 constitute a two-stage buffer to improve the anti-impact ability of the drone when landing and the protection ability of the surveying instrument 4.

[0046] Furthermore, the protection component includes:

[0047] A protection cylinder 35, which is installed at the lower end of the fuselage 1 and is in communication with the inside of the fuselage 1;

[0048] Sealing plates 36 are hinged on both sides of the lower end of the protection cylinder 35. Installation seats are correspondingly arranged at intervals between the inner sides of the sealing plates 36 and the inner side of the protection cylinder 35, and a tension spring 37 is arranged between the installation seats to provide closing power to the two sealing plates 36.

[0049] Specifically, avoidance grooves are correspondingly opened on the periphery of the mounting plate 34 and the installation seats. When the surveying instrument 4 enters the protection cylinder 35, the sealing plates 36 automatically close to isolate the surveying instrument 4 from the outside world and improve the protection ability.

[0050] Furthermore, a flexible layer is adhered to the upper end surface of the sealing plate 36.

[0051] Furthermore, a stop block is arranged at the lower end of the lead screw 32 inside the lifting cylinder 33 to limit the lifting cylinder 33.

[0052] During specific implementation, when the drone is in the surveying and mapping state, the driving component drives the pan-tilt and the surveying instrument to descend and extend out of the protection component for surveying and mapping. At the same time, the driving component drives the support component to be in a non-support state to avoid interfering with the surveying and mapping perspective of the surveying instrument; when the drone lands after the surveying and mapping is completed, the driving component drives the pan-tilt and the surveying instrument to rise and retract into the protection component. At the same time, the driving component drives the support component to be in a support state to avoid accidental damage to the surveying instrument due to impact during landing.

[0053] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A protective device for an unmanned aerial vehicle surveying instrument, characterized in that: The protective device is arranged on a body (1) of the drone, and a plurality of arms (2) are evenly distributed around the body (1); The protective device comprises a driving component, a protective component and a plurality of supporting components (38), wherein the driving component is installed in the machine body (1), and the protective component is located at the lower end of the machine body (1) and below the driving component; a through hole (11) is provided on the side of the machine body (1), and the through hole (11) is located between adjacent machine arms (2); the supporting components (38) are correspondingly arranged at the through hole (11), and each of the supporting components (38) is respectively connected to the machine body (1) and the output end of the driving component, so that the supporting components (38) are in a supporting / non-supporting state as the output end of the driving component moves; a pan-tilt platform (5) is also provided at the output end of the driving component, and a surveying instrument (4) is installed on the pan-tilt platform (5); When the unmanned aerial vehicle is flying for surveying, the driving component drives the gimbal (5) and the surveying instrument (4) to descend and extend out of the protective component for surveying, and at the same time, the driving component drives the supporting component (38) to be in a non-supporting state to avoid interference with the viewing angle of the surveying instrument (4); when the unmanned aerial vehicle completes surveying and lands, the driving component drives the gimbal (5) and the surveying instrument (4) to ascend and retract into the protective component, and at the same time, the driving component drives the supporting component (38) to be in a supporting state to avoid damage to the surveying instrument (4) during landing.

2. The protective device for an unmanned aerial vehicle surveying instrument according to claim 1, characterized in that: The drive assembly comprises: A shell (31) is installed at the top of the body (1), a motor is installed on the top of the shell (31), the shell (31) is connected to the inside of the body (1), a lead screw (32) is rotatably arranged in the shell (31) and extends into the inside of the body (1), the upper end of the lead screw (32) extends out of the shell (31) and is connected to the output end of the motor, and a lifting cylinder (33) is threadedly connected to the lead screw (32); A guide groove (331) is longitudinally provided on the outer peripheral side of the lifting cylinder (33) corresponding to the support assembly (38), and one end of the support assembly (38) is slidably mounted in the guide groove (331), so that the support assembly (38) can rotationally limit the lifting cylinder (33); A mounting plate (34) is provided at the lower end of the lifting cylinder (33), and the mounting plate (34) is used to install the pan-tilt head (5). A through hole is provided at the bottom end of the machine body (1) for the pan-tilt head (5) to extend out of the machine body (1), and the protective component is located at the through hole.

3. The protective device for an unmanned aerial vehicle surveying instrument according to claim 2, characterized in that: The support assembly (38) comprises: A support arm, the upper portion of which is rotatably disposed at the through hole (11); One end of the support arm located inside the body (1) is hingedly connected to one end of an elastic telescopic rod (381), and the other end of the elastic telescopic rod (381) is rotatably provided with a limit block (382), and the limit block (382) is adapted to the guide groove (331) and can slide up and down along the guide groove (331).

4. The protective device for an unmanned aerial vehicle surveying instrument according to claim 3, characterized in that: A limit slot (332) is provided at the bottom of the guide slot (331), and the limit slot (332) is structurally compatible with the limit block (382) and is used to lock the position of the support assembly (38).

5. The protective device for an unmanned aerial vehicle surveying instrument according to claim 3, characterized in that: The support arm comprises a lower support arm (383) and an upper support arm (384); one end of the upper support arm (384) located on the inner side of the shell (31) is hinged to the end of the elastic telescopic rod (381); the side surface of the arm body of the upper support arm (384) is rotatably connected to the two side surfaces of the through hole (11) via a rotating shaft; a plurality of sliding cavities are provided on the lower end surface of the upper support arm (384); a sliding rod (385) is provided on the upper end surface of the lower support arm (383) corresponding to the sliding cavity; and the sliding rod (385) is slidingly limited and arranged in the sliding cavity; A spring (386) is sleeved on the outer side of the slide bar (385), and the spring (386) is supported between the upper end surface of the lower support arm (383) and the lower end surface of the upper support arm (384).

6. The protective device for an unmanned aerial vehicle surveying instrument according to claim 1, characterized in that: The protection component comprises: A protective tube (35), the protective tube (35) being mounted at the lower end of the machine body (1) and being in communication with the interior of the machine body (1); The lower ends of the protective tube (35) are hinged with sealing plates (36) on both sides, and mounting seats are arranged at intervals corresponding to the inner sides of the sealing plates (36) and the inner sides of the protective tube (35), and tension springs (37) are arranged between the mounting seats, and the tension springs (37) provide closing power to the sealing plates (36) on both sides.

7. The protective device for an unmanned aerial vehicle surveying instrument according to claim 6, characterized in that: A flexible layer is bonded to the upper end surface of the sealing plate (36).

8. The protective device for an unmanned aerial vehicle surveying instrument according to claim 2, characterized in that: The lower end of the lead screw (32) is located inside the lifting cylinder (33) and is provided with a stopper.

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