Windproof mechanism for surveying and mapping unmanned aerial vehicle

Abstract

The utility model belongs to the technical field of surveying and mapping unmanned aerial vehicles, and particularly relates to a windproof mechanism for a surveying and mapping unmanned aerial vehicle, which comprises a surveying and mapping unmanned aerial vehicle main body arranged in a flat shape, four hollow shafts, four windproof cylinders, four driving parts, four supporting legs, two reset assemblies, a guide assembly, a folding and unfolding control assembly and a mounting box, the four hollow shafts are fixedly mounted on the surveying and mapping unmanned aerial vehicle body, the four windproof cylinders are radially and rotatably mounted at the ends, away from the surveying and mapping unmanned aerial vehicle body, of the corresponding hollow shafts, the four driving parts are arranged in the corresponding hollow shafts and the windproof cylinders, and the mounting box is fixedly mounted in the middle of a shell of the surveying and mapping unmanned aerial vehicle body. The wind-resistant unmanned aerial vehicle is reasonable in design and good in wind-resistant performance, meanwhile, the flying speed can be greatly increased, the supporting legs can be conveniently folded and unfolded, effective protection can be provided for the paddles, and certain buffering can be provided during landing.

Description

Technical Field

[0001] The utility model relates to the technical field of surveying and mapping unmanned aerial vehicles, in particular to a windproof mechanism for surveying and mapping unmanned aerial vehicles. Background Art

[0002] In UAV mapping technology, UAVs need to perform flight operations under various complex meteorological conditions. Especially in strong wind conditions, UAVs are easily affected by wind, resulting in reduced flight stability and even crashes. Therefore, how to improve the wind resistance of UAVs and ensure that UAVs can fly stably in strong winds has always been one of the important research directions in the field of UAV technology.

[0003] At present, some UAVs have adopted some wind-proof measures in their designs, such as increasing the number and area of ​​propeller blades, using more efficient motors and control systems, etc. However, these measures can only improve the wind resistance of UAVs to a certain extent, and still cannot completely solve the problem of flight stability of UAVs in strong winds.

[0004] Therefore, it is necessary to study a new type of windproof mechanism for surveying and mapping UAVs to improve the wind resistance of the UAV and ensure that the UAV can fly stably in strong winds, thereby improving the accuracy and efficiency of surveying and mapping operations.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings mentioned in the above background technology and to propose a windproof mechanism for a surveying and mapping UAV.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: A windproof mechanism for a surveying and mapping UAV, comprising a surveying and mapping UAV main body arranged in a flat shape, four hollow shafts, four windproof tubes, four driving parts, four legs, two reset assemblies, a guide assembly, a retracting and releasing control assembly and an installation box;

[0008] The four hollow shafts are all fixedly installed on the main body of the surveying and mapping UAV, and the four wind shields are radially rotatably installed at the end of the corresponding hollow shaft away from the main body of the surveying and mapping UAV. The four driving parts are respectively arranged in the corresponding hollow shafts and wind shields. The installation box is fixedly installed in the center position of the shell of the main body of the surveying and mapping UAV. The bottom of the shell of the main body of the surveying and mapping UAV is provided with two storage grooves, and two reset assemblies are respectively arranged in the corresponding storage grooves. The four legs are respectively connected with the corresponding reset assemblies, the retractable control assembly is arranged in the installation box and connected to the four legs, and the guide assembly is arranged on the installation box and connected to the retractable control assembly.

[0009] Preferably, the driving unit comprises a dual-axis motor and two paddles. The dual-axis motor is fixedly installed in the center of the windshield, and the paddles are fixedly sleeved on both output shafts of the dual-axis motor.

[0010] Preferably, the driving unit further comprises a servo motor, the servo motor is fixedly mounted inside the hollow shaft, and the output shaft of the servo motor extends to the hollow shaft and is radially fixedly mounted on the outside of the wind shield.

[0011] Preferably, the reset assembly includes a support shaft and two torsion springs, the same support shaft is rotatably mounted on the front and rear inner walls of the storage groove, the two legs on the same side are radially fixedly mounted on the support shaft, and torsion springs movably mounted on the outside of the support shaft are fixedly mounted on the front and rear inner walls of the storage groove, and the ends of the two torsion springs close to each other are fixedly connected to the corresponding legs respectively.

[0012] Preferably, the retraction and extension control component includes a brake motor, a winding roller and two pull ropes. The brake motor is fixedly installed on the bottom of the installation box, the output shaft of the brake motor extends into the installation box and is fixedly sleeved with a winding roller, and two pull ropes are fixed and wound on the winding roller, and the ends of the two pull ropes away from the winding roller are respectively connected to the legs on the corresponding side.

[0013] Preferably, the guide assembly includes two guide balls, which are movably mounted on the inner walls of both sides of the installation box, and the guide balls are provided with guide holes, and the two pull ropes respectively pass through the corresponding guide openings and contact the inner walls of the guide holes.

[0014] Preferably, the four hollow shafts are arranged on two axes, and the height of the two hollow shafts located on the rear side is greater than the height of the two hollow shafts located on the front side.

[0015] Preferably, a foot pad is fixedly installed on the bottom of the leg, and the material of the foot pad is EPE pearl cotton.

[0016] Preferably, the supporting legs are arranged in an arc shape and are made of a semi-rigid material.

[0017] Preferably, a support frame is fixedly installed in the wind shield, and the dual-axis motor is fixedly installed in the center position of the wind shield through the support frame.

[0018] The beneficial effects of the utility model are as follows: by setting the shell of the surveying and mapping UAV body in a flat shape, the wind resistance during flight can be greatly reduced; by setting a wind shield at the blade position, the wind shield effect of the blade can be greatly improved, thereby effectively avoiding the excessive influence of crosswind on the airflow at the blade position; and by setting the servo motor and the hollow shaft, the wind shield can be controlled to steer as needed, thereby greatly improving the flight speed of the surveying and mapping UAV according to actual use needs; by setting the hollow shafts on the front and rear sides to be low in the front and high in the rear, it can be avoided that when the wind shield is adjusted to a horizontal state, the airflow disturbed by the front blade affects the stable lift provided by the rear blade.

[0019] The retractable and deployable control assembly can be used to retract the outriggers during the flight of the surveying and mapping UAV, and with the cooperation of the resetting assembly, the outriggers can be deployed when the surveying and mapping UAV lands. The foot pads and the semi-rigid, arc-shaped outriggers can provide a better cushioning effect when the surveying and mapping UAV lands. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a windproof mechanism for a surveying and mapping UAV proposed by the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional structure;

[0023] Figure 3 This is a schematic cross-sectional view of the hollow shaft and windproof tube part proposed by the utility model;

[0024] Figure 4 This is a schematic structural diagram of the guide ball and guide hole part proposed by the utility model.

[0025] In the figure: 1. Surveying and mapping UAV body; 11. Storage slot; 2. Hollow shaft; 21. Servo motor; 3. Wind shield; 4. Dual-axis motor; 41. Propeller blades; 42. Support frame; 5. Outrigger; 51. Support shaft; 52. Foot pad; 53. Torsion spring; 6. Mounting box; 61. Brake motor; 62. Winding roller; 63. Pull rope; 64. Guide ball. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1-4 A windproof mechanism for a surveying and mapping UAV comprises a surveying and mapping UAV main body 1, four hollow shafts 2, four windproof tubes 3, four driving parts, four legs 5 and an installation box 6, wherein the four hollow shafts 2 are fixedly mounted on the surveying and mapping UAV main body 1 and the four windproof tubes 3 are radially rotatably mounted on the corresponding hollow shafts 2 at one end away from the surveying and mapping UAV main body 1, a dual-axis motor 4 is fixedly mounted in the center of the windproof tube 3, and blades 41 are fixedly sleeved on the two output shafts of the dual-axis motor 4, which can control the surveying and mapping UAV to ascend and fly, a servo motor 21 is fixedly mounted in the hollow shaft 2, and the output shaft of the servo motor 21 extends to the hollow shaft 2 and is radially fixedly mounted on the outside of the windproof tube 3, which can control the windproof tube 3 to adjust the inclination angle, thereby enabling the surveying and mapping UAV to achieve rapid flight, and the installation box 6 is fixedly mounted in the center position of the shell of the surveying and mapping UAV main body 1, and two storage grooves 11 are provided at the bottom of the shell of the surveying and mapping UAV main body 1, and the storage grooves 11 are rotated on the inner walls on the front and rear sides. The same support shaft 51 is installed, and the two legs 5 on the same side are radially fixedly installed on the support shaft 51. Torsion springs 53 movably sleeved on the outside of the support shaft 51 are fixedly installed on the inner walls of the front and rear sides of the storage groove 11. The ends of the two torsion springs 53 close to each other are respectively fixedly connected to the corresponding legs 5, so that the legs 5 can be controlled to unfold automatically when the legs 5 are not operated. A brake motor 61 is fixedly installed at the bottom of the installation box 6, and the output shaft of the brake motor 61 extends into the installation box 6 and is fixedly sleeved with a winding roller 62. Two pull ropes 63 are fixed and wound on the winding roller 62. The ends of the two pull ropes 63 away from the winding roller 62 are respectively connected to the legs 5 on the corresponding side, so that the legs 5 can be controlled to perform storage operations. Guide balls 64 are movably installed on the inner walls of both sides of the installation box 6, and guide holes are opened on the guide balls 64. The two pull ropes 63 respectively pass through the corresponding guide openings and contact the inner walls of the guide holes, which can provide guidance for the pull ropes 63, thereby avoiding abnormal wear.

[0028] In this embodiment, in order to avoid the influence of the airflow generated by the blades 41 in the front wind shield 3 on the rear blades 41 when the wind shield 3 is deflected to a horizontal state, four hollow shafts 2 are arranged on two axes, and the height of the two hollow shafts 2 on the rear side is greater than the height of the two hollow shafts 2 on the front side.

[0029] In this embodiment, in order to provide a certain cushioning effect for the surveying and mapping UAV when landing, a foot pad 52 is fixedly installed at the bottom of the leg 5. The foot pad 52 is made of EPE pearl cotton. The leg 5 is arranged in an arc shape and is made of semi-rigid material.

[0030] In this embodiment, in order to enable the dual-axis motor 4 to be stably fixed in the center position inside the wind shield 3 and ensure the wind passing effect of the wind shield 3, a support frame 42 is fixedly installed inside the wind shield 3, and the dual-axis motor 4 is fixedly installed in the center position inside the wind shield 3 through the support frame 42.

[0031] The circuits, electronic components and module structures involved all adopt existing technologies, which can be fully implemented by those skilled in the art. Needless to say, the content protected by this application does not involve improvements to software, circuits and methods.

[0032] Working principle: When using the surveying and mapping UAV, first connect the power supply and use the remote control to start the dual-axis motor 4. The dual-axis motor 4 provides lift for the surveying and mapping UAV through the blades 41, so that the surveying and mapping UAV can be controlled to fly. After flying, the brake motor 61 controls the winding roller 62 to reel in the pull rope 63, so that the support leg 5 can be pulled into the storage groove, thereby reducing the wind resistance during flight. During the flight, the servo motor 21 drives the wind shield 3 to deflect on the axis of the hollow shaft 2 according to actual needs, and then the wind shield 3 can be adjusted to a suitable angle according to actual needs. Under the action of the wind shield 3, the blades 41 can be provided with an effective windproof effect, and at the same time, it will not affect the rotation of the blades 41 to increase the lift. When the surveying and mapping UAV needs to fly quickly, the wind shield 3 can be adjusted to a horizontal state, and the front The two windshields 3 on the side are in a windward state. At this time, with the cooperation of the dual-axis motor 4 and the blades 41, the surveying and mapping UAV can be provided with the reverse thrust required for flight. Since the height of the two windshields 3 on the front side is different from the height of the two windshields 3 on the rear side, the main body of the surveying and mapping UAV can maintain a fast flight state. When the surveying and mapping UAV needs to land, the brake motor 61 is controlled to rotate in the opposite direction so that the winding roller 62 releases the pull rope 63, so that the support leg 5 can be unfolded with the cooperation of the torsion spring 53 and the support shaft 51. During landing, with the cooperation of the support leg 5 and the foot pad 52 which are arranged in an arc shape and made of semi-rigid material, the surveying and mapping UAV can be provided with a better buffering effect to avoid damage. At the same time, due to the setting of the windshield 3, it can also provide effective protection for the blades 41 when the inevitable dumping phenomenon occurs after landing.

[0033] The above is a detailed introduction to a windproof mechanism for a surveying and mapping drone provided by the utility model. This article uses specific embodiments to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A windproof mechanism for a surveying and mapping UAV, characterized in that: It comprises a flat-shaped surveying and mapping unmanned aerial vehicle main body (1), four hollow shafts (2), four windproof tubes (3), four driving parts, four legs (5), two reset components, a guide component, a retractable control component and an installation box (6); Four hollow shafts (2) are fixedly mounted on a surveying and mapping UAV body (1), four wind shields (3) are radially rotatably mounted on the ends of the corresponding hollow shafts (2) away from the surveying and mapping UAV body (1), four driving parts are respectively arranged in the corresponding hollow shafts (2) and wind shields (3), the installation box (6) is fixedly mounted at a central position in the shell of the surveying and mapping UAV body (1), the shell bottom of the surveying and mapping UAV body (1) is provided with two storage grooves (11), two reset assemblies are respectively arranged in the corresponding storage grooves (11), four legs (5) are respectively connected to the corresponding reset assemblies, the retractable control assembly is arranged in the installation box (6) and connected to the four legs (5), and the guide assembly is arranged on the installation box (6) and connected to the retractable control assembly.

2. The windproof mechanism for a surveying and mapping UAV according to claim 1, characterized in that: The driving unit comprises a dual-shaft motor (4) and two paddles (41); the dual-shaft motor (4) is fixedly mounted in the center of the windshield (3); and the paddles (41) are fixedly sleeved on both output shafts of the dual-shaft motor (4).

3. The windproof mechanism for a surveying and mapping UAV according to claim 1, characterized in that: The driving unit further comprises a servo motor (21), the servo motor (21) being fixedly mounted inside the hollow shaft (2), the output shaft of the servo motor (21) extending to the hollow shaft (2) and being radially fixedly mounted on the outside of the wind shield (3).

4. The windproof mechanism for a surveying and mapping UAV according to claim 1, characterized in that: The reset assembly comprises a support shaft (51) and two torsion springs (53); the same support shaft (51) is rotatably mounted on the front and rear inner walls of the receiving groove (11); two legs (5) located on the same side are radially fixedly mounted on the support shaft (51); the front and rear inner walls of the receiving groove (11) are fixedly mounted with torsion springs (53) movably sleeved on the outside of the support shaft (51); and the ends of the two torsion springs (53) close to each other are fixedly connected to the corresponding legs (5) respectively.

5. The windproof mechanism for a surveying and mapping UAV according to claim 1, characterized in that: The retractable and retractable control component comprises a brake motor (61), a winding roller (62) and two pull ropes (63); the brake motor (61) is fixedly mounted on the bottom of the mounting box (6); the output shaft of the brake motor (61) extends into the mounting box (6) and is fixedly sleeved with the winding roller (62); the two pull ropes (63) are fixed and wound on the winding roller (62); the ends of the two pull ropes (63) away from the winding roller (62) are respectively connected to the corresponding legs (5) on one side.

6. The windproof mechanism for a surveying and mapping UAV according to claim 5, characterized in that: The guide assembly comprises two guide balls (64), and the guide balls (64) are movably mounted on the inner walls of both sides of the installation box (6). The guide balls (64) are provided with guide holes, and the two pull ropes (63) respectively pass through the corresponding guide openings and contact the inner walls of the guide holes.

7. The windproof mechanism for a surveying and mapping UAV according to claim 1, characterized in that: The four hollow shafts (2) are arranged on two axes, and the heights of the two hollow shafts (2) located on the rear side are greater than the heights of the two hollow shafts (2) located on the front side.

8. The windproof mechanism for a surveying and mapping UAV according to claim 1, characterized in that: A foot pad (52) is fixedly mounted on the bottom of the supporting leg (5), and the foot pad (52) is made of EPE pearl cotton.

9. The windproof mechanism for a surveying and mapping UAV according to claim 1, characterized in that: The supporting legs (5) are arranged in an arc shape, and the supporting legs (5) are made of semi-rigid material.

10. The windproof mechanism for a surveying and mapping UAV according to claim 2, characterized in that: A support frame (42) is fixedly installed in the windproof cylinder (3), and the dual-axis motor (4) is fixedly installed at a central position in the windproof cylinder (3) via the support frame (42).

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