Balancing device for aerial photography surveying instrument of unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicle photography, and discloses an unmanned aerial vehicle aerial photography surveying instrument balancing device which comprises an unmanned aerial vehicle, a surveying instrument is installed in the center of the bottom of the unmanned aerial vehicle, a plurality of supporting rods are fixedly connected to the bottom of a rack, and buffering assemblies are arranged between the bottoms of the supporting rods. A protection mechanism is arranged on the outer side of the surveying instrument; and the protection mechanism comprises a protection assembly, a cut-off ring and a trigger assembly, the cut-off ring is arranged on the outer side of the supporting rod in a sleeving mode, and the protection assembly comprises a sliding barrel and a hemispherical shell. According to the surveying instrument, the sliding cylinder is unlocked through the triggering assembly, so that the hemispherical shell moves upwards under the action of the tension spring, and the surveying instrument is protected from being damaged by vibration or ground gravel. The large bottom plate provides enough contact area to prevent rollover, the shock absorption air bag at the bottom absorbs impact force, the influence of shock on the machine body and the surveying instrument is reduced, and the shock absorption air bag can be in linkage triggering with the protection assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to unmanned aerial vehicle photography technical field especially relates to a kind of unmanned aerial vehicle aerial photography surveying and mapping instrument balancing device. BACKGROUND

[0002] Unmanned aerial vehicle aerial photography surveying and mapping instrument is a kind of aerial equipment for high-precision geographic surveying and mapping, usually by unmanned aerial vehicle carries high-resolution camera, laser radar (LiDAR), multispectral or thermal imaging sensor and other surveying and mapping instruments composition.It is mainly used to obtain topography, landform, building and vegetation and other geographic information by aerial photography or laser scanning, and convert data into high-precision digital orthophoto map, digital elevation model or three-dimensional point cloud, widely used in land surveying and mapping, agricultural monitoring, disaster assessment, urban planning, environmental protection and other fields.

[0003] Since unmanned aerial vehicle is influenced by air flow interference, attitude change and vibration in flight process, thereby leading to surveying and mapping data distortion, therefore, aerial photography surveying and mapping instrument balancing device is needed.It can keep surveying and mapping instrument always in horizontal state, improve image definition and surveying and mapping precision.

[0004] However, existing unmanned aerial vehicle surveying and mapping equipment is easily influenced by external environment in landing process, especially in complex terrain or adverse weather conditions, surveying and mapping instrument exists the risk of being damaged due to ground gravel, impact vibration and other factors.In addition, the landing support structure of traditional surveying and mapping instrument has small contact area, weak stability, and is easy to cause unmanned aerial vehicle to tilt or even roll over on uneven ground, affecting the safety of equipment and the continuity of subsequent surveying and mapping work.

[0005] In view of the above problems, a kind of unmanned aerial vehicle aerial photography surveying and mapping instrument balancing device is proposed to solve the above problems. UTILITY MODEL CONTENT

[0006] In order to make up for the above shortcomings, the utility model provides a kind of unmanned aerial vehicle aerial photography surveying and mapping instrument balancing device, aims at solving the problems of existing unmanned aerial vehicle aerial photography surveying and mapping instrument balancing device in landing process surveying and mapping instrument easy to be damaged and unmanned aerial vehicle high risk of rollover.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of unmanned aerial vehicle aerial photography surveying and mapping instrument balancing device, including unmanned aerial vehicle, the bottom center of the unmanned aerial vehicle is equipped with surveying and mapping instrument, the bottom of the unmanned aerial vehicle is provided with rack, the top of the rack is equipped with a plurality of spiral fan blades, the bottom of the rack is fixedly connected with a plurality of support rods, and a plurality of buffer assemblies are arranged between the bottom of the support rods, the outer side of the surveying and mapping instrument is provided with protection mechanism;

[0008] The protection mechanism comprises a protection assembly, a cutoff ring and a trigger assembly, the cutoff ring is sleeved outside the support rod, the protection assembly comprises a sliding cylinder and a hemispherical shell, the top of the surveying instrument is provided with an upper mounting seat, a plurality of tension springs are arranged between the hemispherical shell and the upper mounting seat, and a telescopic rod is arranged between the hemispherical shell and the sliding cylinder.

[0009] As a further description of the above technical solution:

[0010] The sliding cylinder is slidably connected outside the support rod, and the hemispherical shell is located directly below the surveying instrument.

[0011] As a further description of the above technical solution:

[0012] Two limiting rods are symmetrically arranged at the top of the side wall of the hemispherical shell, and the top of the limiting rod is slidably connected in the inner portion of the upper mounting seat.

[0013] As a further description of the above technical solution:

[0014] One end of the telescopic rod is rotatably connected outside the sliding cylinder, and the other end of the telescopic rod is rotatably connected outside the hemispherical shell.

[0015] As a further description of the above technical solution:

[0016] The inner portion of the support rod is hollow, a locking rod is arranged in the inner portion of the support rod, a rotating shaft is arranged in the middle portion of the locking rod, the top portion of the locking rod is outwardly bent and abuts against the top portion of the sliding cylinder.

[0017] As a further description of the above technical solution:

[0018] The trigger assembly comprises a base, a cylinder is fixedly connected to the top of the base, and an inclined groove is formed in the inner portion of the cylinder.

[0019] As a further description of the above technical solution:

[0020] The bottom portion of the locking rod is inserted into the inner portion of the inclined groove, and the cylinder is slidably connected in the inner portion of the support rod.

[0021] As a further description of the above technical solution:

[0022] The buffer assembly comprises a bottom plate, a shock-absorbing air bag is arranged at the bottom of the bottom plate, and a plurality of bases are fixedly connected to the top of the bottom plate.

[0023] The utility model has the advantages of the following beneficial effects:

[0024] 1. The utility model discloses a locking rod is rotated and is locked to the slide cylinder when the unmanned plane contacts the ground, and the hemisphere shell at the bottom of the surveying instrument is rapidly moved up under the action of multiple tension springs, so that the surveying instrument is tightly covered in the shell, thereby avoiding damage to the surveying instrument caused by landing vibration or ground gravel and the like, and improving the durability and stability of the equipment.

[0025] 2. The utility model discloses that the larger bottom plate provides sufficient contact area, effectively prevents the unmanned plane from rolling over due to uneven ground or lateral impact. At the same time, the shock-absorbing air bag at the bottom can absorb impact force when landing, reducing the impact of vibration on the unmanned plane body and the surveying instrument, and can be triggered in linkage with the protection assembly. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A three-dimensional schematic view of the utility model discloses a balance device for an unmanned plane aerial photographic surveying instrument is provided;

[0027] Figure 2 A structure schematic view of the tension spring of the utility model discloses a balance device for an unmanned plane aerial photographic surveying instrument is provided;

[0028] Figure 3 A structure schematic view of the locking rod of the utility model discloses a balance device for an unmanned plane aerial photographic surveying instrument is provided;

[0029] Figure 4 A structure schematic view of the cylinder of the utility model discloses a balance device for an unmanned plane aerial photographic surveying instrument is provided.

[0030] LEGEND:

[0031] 1, unmanned plane;11, helical fan blade;2, surveying instrument;3, support rod;4, protection mechanism;41, protection assembly;411, slide cylinder;412, hemisphere shell;413, upper mounting seat;414, tension spring;415, telescopic rod;416, limiting rod;417, locking rod;42, cutoff ring;43, trigger assembly;431, base;432, cylinder;433, inclined groove;5, buffer assembly;501, bottom plate;502, shock-absorbing air bag. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] REFERENCE Figure 1 -Figure 4 The utility model provides an embodiment: a kind of unmanned aerial vehicle aerial photogrammetry device balancing device, including unmanned aerial vehicle 1, the bottom center of unmanned aerial vehicle 1 is equipped with surveying instrument 2, for executing aerial photogrammetry task.The bottom of unmanned aerial vehicle 1 is equipped with rack, the top of rack is equipped with multiple helical fan blade 11, for providing lift and flight stability.The bottom of rack is fixedly connected with multiple evenly distributed support rods 3, to enhance the overall support ability of unmanned aerial vehicle 1, and improve the stability when landing.The bottom between multiple support rods 3 is equipped with buffer assembly 5, can effectively buffer the impact force when unmanned aerial vehicle 1 lands, reduce the influence of vibration to surveying instrument 2, prolong equipment service life.The outside of surveying instrument 2 is equipped with protection mechanism 4, when unmanned aerial vehicle 1 lands, trigger protection mechanism 4 release locking rod 417, make hemispherical shell 412 move upwards under the action of multiple tension springs 414, cover surveying instrument 2 completely and protect inside, to avoid external impact and ground gravel damage to surveying instrument 2, improve the durability and safety of equipment.

[0034] Refer to Figure 2 - Figure 3 Protection mechanism 4 includes protection assembly 41, cutoff ring 42 and trigger assembly 43, wherein, cutoff ring 42 is sleeved on the outside of support rod 3, for limiting the upper sliding position of protection assembly 41.Protection assembly 41 is composed of sliding cylinder 411 and hemispherical shell 412, sliding cylinder 411 is installed on the outside of support rod 3 in sliding mode, ensure that it can smoothly slide when triggering.Hemispherical shell 412 is located directly below surveying instrument 2, can be coated to protect surveying instrument 2 when needed.The top of surveying instrument 2 is fixedly installed with upper mounting seat 413, multiple tension springs 414 are evenly arranged between hemispherical shell 412 and upper mounting seat 413, ensure that hemispherical shell 412 can move upwards rapidly under the tension of tension spring 414 in triggered state.In addition, the top of the side wall of hemispherical shell 412 is symmetrically provided with two limit rods 416, and the top of limit rod 416 is slidably connected to the inside of upper mounting seat 413, for limiting the movement track of hemispherical shell 412, ensure that it is stable and reliable in the process of moving upwards.Rod 415 is arranged between hemispherical shell 412 and sliding cylinder 411, one end of the rod 415 is connected to the outside of sliding cylinder 411 in rotating mode, the other end is also connected to the outside of hemispherical shell 412 in rotating mode, ensure that hemispherical shell 412 can stably stretch and contract in stress state, enhance the protection effect.The inside of support rod 3 adopts hollow structure, and locking rod 417 is arranged in it, the middle part of locking rod 417 is provided with a rotating shaft, for providing flexible rotating function, the top of locking rod 417 is bent outward, and abuts with the top of sliding cylinder 411, realizes effective locking of sliding cylinder 411 when not triggering, to ensure that protection mechanism 4 is in stable standby state, avoid misoperation, improve the reliability and safety of overall protection.

[0035] Refer toFigure 3 Figure 4 The trigger assembly 43 comprises a base 431, the top of the base 431 is fixedly connected with a cylinder 432, the inside of the cylinder 432 is provided with an inclined slot 433, the bottom of the locking rod 417 is inserted into the inside of the inclined slot 433, the cylinder 432 is slidingly connected in the inside of the supporting rod 3, so that the trigger assembly 43 can smoothly slide when subjected to external force. The trigger assembly 43 can trigger the rotation of the locking rod 417 by external force when the unmanned aerial vehicle 1 lands, and then unlock the protection assembly 41, so that the hemispherical shell 412 can quickly move up by the tension spring 414, thereby protecting the surveying instrument 2 from damage.

[0036] With reference to Figure 2 Figure 3 The buffer assembly 5 comprises a bottom plate 501, which provides sufficient support after the unmanned aerial vehicle 1 lands, preventing the unmanned aerial vehicle 1 from rolling over. The bottom of the bottom plate 501 is provided with a shock-absorbing air bag 502, which effectively reduces the impact of vibration on the surveying instrument 2. A plurality of bases 431 are fixedly connected to the top of the bottom plate 501. After the bottom plate 501 contacts the ground, the locking rod 417 is triggered by the cylinder 432 to release the restriction on the sliding cylinder 411. At this time, the hemispherical shell 412 can move up to protect the surveying instrument 2.

[0037] Working principle: The surveying instrument 2 is installed at the center of the bottom of the unmanned aerial vehicle 1, and the protection mechanism 4 is arranged around the surveying instrument 2. When the unmanned aerial vehicle 1 lands, the bottom plate 501 first contacts the ground, and the shock-absorbing air bag 502 begins to reduce vibration. The plurality of supporting rods 3 installed on the bottom plate 501 stably support the unmanned aerial vehicle 1, preventing it from rolling over. The cylinder 432 on the bottom plate 501 is forced to slide into the inside of the supporting rod 3, and the locking rod 417 slides into the inclined slot 433 in the inside of the cylinder 432. The locking rod 417 rotates by a certain angle, the curved top of the locking rod 417 releases the restriction on the sliding cylinder 411, and the sliding cylinder 411 slides outside the supporting rod 3. At this time, the hemispherical shell 412 moves up under the action of the tension spring 414, covering the surveying instrument 2, and completing the protection. The movement of the hemispherical shell 412 is guided by the limiting rod 416. The action of the protection mechanism 4 is controlled by the trigger assembly 43, which cooperates with the locking rod 417 through the base 431 and the cylinder 432, to ensure that the protection mechanism is triggered accurately when the unmanned aerial vehicle 1 lands, and is linked and triggered with the buffer assembly 5.

[0038] Finally, it should be noted that: the above only for preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.​​

Claims

1. An unmanned aerial vehicle photogrammetric mapping device balancing device, comprising an unmanned aerial vehicle (1), characterized in that: The bottom center of the unmanned plane (1) is provided with a surveying instrument (2), the bottom of the unmanned plane (1) is provided with a rack, the top of the rack is provided with a plurality of spiral blades (11), the bottom of the rack is fixedly connected with a plurality of supporting rods (3), and the bottom of the plurality of supporting rods (3) is provided with a buffer assembly (5), and the outer side of the surveying instrument (2) is provided with a protection mechanism (4). The protection mechanism (4) comprises a protection assembly (41), a cutoff ring (42) and a trigger assembly (43), the cutoff ring (42) is sleeved on the outer side of the supporting rod (3), the protection assembly (41) comprises a sliding cylinder (411) and a hemispherical shell (412), the top of the surveying instrument (2) is provided with an upper mounting seat (413), a plurality of tension springs (414) are arranged between the hemispherical shell (412) and the upper mounting seat (413), and a telescopic rod (415) is arranged between the hemispherical shell (412) and the sliding cylinder (411).

2. The unmanned aerial photogrammetric surveying and mapping device balance device according to claim 1, characterized in that: The sliding cylinder (411) is slidably connected to the outer side of the supporting rod (3), and the hemispherical shell (412) is located directly below the surveying instrument (2).

3. The unmanned aerial photogrammetric surveying and mapping device balance device according to claim 1, characterized in that: Two limiting rods (416) are symmetrically arranged at the top of the side wall of the hemispherical shell (412), and the top of the limiting rod (416) is slidably connected to the inside of the upper mounting seat (413).

4. The unmanned aerial photogrammetric surveying and mapping device balance device according to claim 1, characterized in that: One end of the telescopic rod (415) is rotatably connected to the outer side of the sliding cylinder (411), and the other end of the telescopic rod (415) is rotatably connected to the outer side of the hemispherical shell (412).

5. The unmanned aerial photogrammetric surveying and mapping device balance device according to claim 1, characterized in that: The supporting rod (3) is hollow, and the inside of the supporting rod (3) is provided with a locking rod (417), the middle part of the locking rod (417) is provided with a rotating shaft, the top of the locking rod (417) is outwardly bent and abuts against the top of the sliding cylinder (411).

6. The unmanned aerial photogrammetric surveying and mapping device balance device according to claim 5, characterized in that: The trigger assembly (43) comprises a base (431), and the top of the base (431) is fixedly connected with a cylinder (432), and the inside of the cylinder (432) is provided with an inclined groove (433).

7. The gimbal of claim 6, wherein: The bottom of the locking rod (417) is inserted into the inside of the inclined groove (433), and the cylinder (432) is slidably connected to the inside of the supporting rod (3).

8. The gimbal of claim 6, wherein: The buffer assembly (5) comprises a bottom plate (501), the bottom of the bottom plate (501) is provided with a shock-absorbing air bag (502), and a plurality of bases (431) are fixedly connected to the top of the bottom plate (501).

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