Ultra-low-noise large-load unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to an ultra-low-noise large-load unmanned aerial vehicle which comprises a connecting frame, a grating screen is installed at the bottom end of the connecting frame, an unmanned aerial vehicle body is installed on the connecting frame, four rotor wings are installed on the unmanned aerial vehicle body, and a noise reduction structure is arranged on the unmanned aerial vehicle body. The silencing structure comprises connecting covers and placing grooves, the four connecting covers are fixedly connected to the unmanned aerial vehicle body, two placing grooves are formed in each connecting cover, two pieces of sound absorption cotton are placed on each connecting cover, a blocking cover is clamped to one end of each connecting cover, and a limiting structure is arranged on each connecting cover; the noise generated in the flying process of the unmanned aerial vehicle can be reduced, so that bad influences on surrounding people and animals are avoided, and the unmanned aerial vehicle is more convenient to use.

Description

Technical Field

[0001] The utility model relates to an unmanned aerial vehicle, in particular to an ultra-low-noise large-load unmanned aerial vehicle, belonging to the technical field of unmanned aerial vehicles. Background Art

[0002] Unmanned aerial vehicles, referred to as "drones", are unmanned aircraft controlled by radio remote control equipment and self-contained program control devices, or operated completely or intermittently autonomously by on-board computers. In actual use, grille screens are installed on large-load drones to facilitate the display of content at high altitudes.

[0003] However, when a large-load drone is flying with a grille display, the rotation of its rotor will generate a lot of noise, which can easily cause noise pollution and have a negative impact on people and animals around it. Utility Model Content

[0004] The purpose of the utility model is to provide an ultra-low noise large-load UAV in order to solve the above-mentioned problem, which can reduce the noise generated during the flight of the UAV, thereby avoiding adverse effects on surrounding people and animals, and making it more convenient to use.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: an ultra-low noise large-load UAV, including a connecting frame, a grille screen is installed at the bottom end of the connecting frame, a UAV body is installed on the connecting frame, four rotors are installed on the UAV body, a sound-absorbing structure is provided on the UAV body, the sound-absorbing structure includes a connecting cover and a placement groove, four connecting covers are fixedly connected to the UAV body, two placement grooves are provided on the connecting cover, two sound-absorbing cottons are placed on the connecting cover, a blocking cover is clamped at one end of the connecting cover, and a limiting structure is provided on the connecting cover.

[0006] Preferably, a groove is provided on the baffle cover, one end of the sound-absorbing cotton is located inside the groove, and the other end of the sound-absorbing cotton is located inside the placement groove.

[0007] Preferably, the width of the groove cross section is equal to the thickness of the sound-absorbing cotton cross section, and the width of the placement slot cross section is equal to the thickness of the sound-absorbing cotton cross section.

[0008] Preferably, both sides of the cross-section of the sound-absorbing cotton are in an arc-shaped structure, and the two sound-absorbing cottons are symmetrically distributed about the middle part of the connecting cover.

[0009] Preferably, the center of the connecting cover and the rotation axis of the rotor located inside the connecting cover are on the same straight line, and the four rotors are distributed in a circular array about the center of the drone body.

[0010] Preferably, the limiting structure includes a connecting block and a stopper, two connecting blocks are fixedly connected to the stop cover, four connecting columns are fixedly connected to the connecting cover, the same stopper is slidably connected to two adjacent connecting columns, and the stopper conflicts with the adjacent connecting blocks.

[0011] Preferably, a return spring is sleeved on the outside of the connecting column, one end of the return spring is fixedly connected to the connecting cover, and the other end of the return spring is fixedly connected to the stopper.

[0012] Preferably, two stop blocks are fixedly connected to the connection cover, and a support block is rotatably connected to the stop block.

[0013] Preferably, the cross section of the stopper is L-shaped, and the cross section of the end of the stopper is trapezoidal.

[0014] Preferably, a line connecting the two connecting blocks passes through the center of the shielding cover, and the two connecting blocks are symmetrically distributed with respect to the middle of the shielding cover.

[0015] The beneficial effect of the utility model is that during use, the connecting frame can be driven to move by the drone body, and the connecting frame will drive the grille screen to move together, so that the grille screen is suspended in the air, which is convenient for displaying content at high altitudes. By setting the connecting cover, the rotor can be protected to a certain extent. At the same time, by setting the sound-absorbing cotton, the noise generated when the rotor rotates can be absorbed, thereby reducing the noise generated by the flight of the drone body and avoiding adverse effects on people and animals around, making it more convenient to use. The blocking cover can be quickly removed from the top of the connecting cover through the limiting structure. After the blocking cover is removed, it will not resist the sound-absorbing cotton. Then the sound-absorbing cotton can be taken out from the inside of the connecting cover. Therefore, when the sound absorbing effect of the sound-absorbing cotton deteriorates, it can be replaced, thereby effectively ensuring the noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the connection cover and the retaining cover of the utility model;

[0018] Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown;

[0019] Figure 4 This is a schematic diagram of the connection structure between the connection cover and the placement slot of the utility model;

[0020] Figure 5 It is a schematic diagram of the connection structure between the baffle cover and the groove of the utility model.

[0021] In the figure: 1. connecting frame; 2. UAV body; 3. rotor; 4. silencer structure; 401. connecting cover; 402. placement slot; 403. sound-absorbing cotton; 404. blocking cover; 405. groove; 5. limiting structure; 501. connecting block; 502. blocking block; 503. connecting column; 504. reset spring; 505. supporting block; 506. resisting block; 6. grille screen. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, an ultra-low noise large-load UAV comprises a connecting frame 1, a grille screen 6 is installed at the bottom end of the connecting frame 1, a UAV body 2 is installed on the connecting frame 1, four rotors 3 are installed on the UAV body 2, a sound-absorbing structure 4 is provided on the UAV body 2, and the sound-absorbing structure 4 comprises a connecting cover 401 and a placement groove 402, four connecting covers 401 are fixedly connected to the UAV body 2, two placement grooves 402 are provided on the connecting cover 401, two sound-absorbing cottons 403 are placed on the connecting cover 401, a blocking cover 404 is engaged at one end of the connecting cover 401, a limiting structure 5 is provided on the connecting cover 401, both sides of the cross section of the sound-absorbing cotton 403 are arc-shaped structures, and the two sound-absorbing cottons 403 are symmetrically distributed about the middle of the connecting cover 401.

[0024] As a technical optimization solution of the utility model, Figure 4 and Figure 5 As shown, a groove 405 is provided on the baffle 404, one end of the sound-absorbing cotton 403 is located inside the groove 405, and the other end of the sound-absorbing cotton 403 is located inside the placement groove 402. The width of the cross-section of the groove 405 is equal to the thickness of the cross-section of the sound-absorbing cotton 403, and the width of the cross-section of the placement groove 402 is equal to the thickness of the cross-section of the sound-absorbing cotton 403. Therefore, the sound-absorbing cotton 403 can be positioned by the groove 405 and the placement groove 402.

[0025] As a technical optimization solution of the utility model, Figure 1As shown, the center of the connecting cover 401 and the rotation axis of the rotor 3 located inside it are on the same straight line, and the four rotors 3 are distributed in a circular array about the center of the drone body 2, so the connecting cover 401 can provide a certain degree of protection for the rotor 3.

[0026] As a technical optimization solution of the utility model, Figure 1 , Figure 2 and Figure 3 As shown, the limiting structure 5 includes a connecting block 501 and a stopper 502, two connecting blocks 501 are fixedly connected to the shield 404, four connecting columns 503 are fixedly connected to the connecting cover 401, and the same stopper 502 is slidably connected to two adjacent connecting columns 503, and the stopper 502 is in conflict with the adjacent connecting blocks 501. A reset spring 504 is provided on the outer sleeve of the connecting column 503, one end of the reset spring 504 is fixedly connected to the connecting cover 401, and the other end of the reset spring 504 is fixedly connected to the stopper 502. The connecting line of the two connecting blocks 501 passes through the center of the shield 404, and the two connecting blocks 501 are symmetrically distributed about the middle part of the shield 404, so that the shield 404 can be quickly disassembled, thereby facilitating the replacement of the sound-absorbing cotton 403.

[0027] As a technical optimization solution of the utility model, Figure 2 and Figure 3 As shown, the connection cover 401 is fixedly connected to two stop blocks 506, and the stop block 502 is rotatably connected to a support block 505, thereby avoiding the need to hold the stop block 502 by hand all the time, thereby effectively improving the convenience of operation.

[0028] As a technical optimization solution of the utility model, Figure 3 As shown, the cross section of the stopper 502 is L-shaped, and the cross section of the end of the stopper 502 is trapezoidal, so that the stopper 502 can play a guiding role when resisting the connecting block 501 .

[0029] When the utility model is in use, the connecting frame 1 can be driven to move by the drone body 2, and the connecting frame 1 will drive the grille screen 6 to move together, so that the grille screen 6 is suspended in the air, which is convenient for displaying content at high altitudes. By setting the connecting cover 401, the rotor 3 can be protected to a certain extent. At the same time, by setting the sound-absorbing cotton 403, the noise generated when the rotor 3 rotates can be absorbed, thereby reducing the noise generated when the drone body 2 flies, avoiding a bad influence on the people and animals around, and making it more convenient to use. When the sound-absorbing cotton 403 has a poor sound-absorbing effect, the stopper 502 can be pulled, and the stopper 502 slides on the two connecting columns 503, and the reset spring 504 is extended. When the stopper 502 moves a certain distance, it will not resist the connecting block 501. At this time, the support block 505 can be rotated and The end of the block 502 is in contact with the stop block 506, and the stop block 502 can be supported by the support block 505 at this time, avoiding the block 502 from resisting the connecting block 501 again under the action of the return spring 504 after the block 502 is released, thereby avoiding the need to pull the block 502 with hands all the time, effectively improving the convenience of operation, and when one of the blocks 502 does not resist the connecting block 501, the above operation can be repeated so that the other block 502 does not resist the other connecting block 501, and then the block cover 404 can be removed from the end of the connecting cover 401. After the block cover 404 is removed, it will not resist the sound-absorbing cotton 403, and then the sound-absorbing cotton 403 can be taken out from the inside of the connecting cover 401.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An ultra-low noise, large-load UAV, comprising a connecting frame (1), characterized in that: A grille screen (6) is installed at the bottom end of the connecting frame (1), an unmanned aerial vehicle body (2) is installed on the connecting frame (1), four rotors (3) are installed on the unmanned aerial vehicle body (2), a sound absorbing structure (4) is provided on the unmanned aerial vehicle body (2), the sound absorbing structure (4) comprises a connecting cover (401) and a placement groove (402), four connecting covers (401) are fixedly connected to the unmanned aerial vehicle body (2), two placement grooves (402) are provided on the connecting cover (401), two sound absorbing cottons (403) are placed on the connecting cover (401), a blocking cover (404) is engaged at one end of the connecting cover (401), and a limiting structure (5) is provided on the connecting cover (401).

2. The ultra-low noise, large-load UAV according to claim 1, characterized in that: The shield (404) is provided with a groove (405), one end of the sound-absorbing cotton (403) is located inside the groove (405), and the other end of the sound-absorbing cotton (403) is located inside the placement groove (402).

3. The ultra-low noise, large-load UAV according to claim 2, characterized in that: The width of the cross section of the groove (405) is equal to the thickness of the cross section of the sound-absorbing cotton (403), and the width of the cross section of the placement groove (402) is equal to the thickness of the cross section of the sound-absorbing cotton (403).

4. The ultra-low noise, large-load UAV according to claim 1, characterized in that: Both sides of the cross section of the sound-absorbing cotton (403) are in an arc-shaped structure, and the two sound-absorbing cottons (403) are symmetrically distributed about the middle of the connecting cover (401).

5. The ultra-low noise, large-load UAV according to claim 1, characterized in that: The center of the connection cover (401) and the rotation axis of the rotor (3) located inside the connection cover are on the same straight line, and the four rotors (3) are distributed in a circular array about the center of the drone body (2).

6. The ultra-low noise, large-load UAV according to claim 1, characterized in that: The limiting structure (5) comprises a connecting block (501) and a stopper (502); the stopper cover (404) is fixedly connected to two connecting blocks (501); the connecting cover (401) is fixedly connected to four connecting columns (503); two adjacent connecting columns (503) are slidably connected to the same stopper (502); and the stopper (502) and the adjacent connecting blocks (501) are in contact with each other.

7. The ultra-low noise, large-load UAV according to claim 6, characterized in that: The outer sleeve of the connecting column (503) is provided with a return spring (504), one end of the return spring (504) is fixedly connected to the connecting cover (401), and the other end of the return spring (504) is fixedly connected to the stopper (502).

8. The ultra-low noise, large-load UAV according to claim 6, characterized in that: The connection cover (401) is fixedly connected to two stop blocks (506), and the stop block (502) is rotatably connected to a support block (505).

9. The ultra-low noise, large-load UAV according to claim 6, characterized in that: The cross section of the stopper (502) is in an L-shaped structure, and the cross section of the end of the stopper (502) is in a trapezoidal structure.

10. The ultra-low noise, large-load UAV according to claim 6, characterized in that: The connecting line of the two connection blocks (501) passes through the center of the shielding cover (404), and the two connection blocks (501) are symmetrically distributed with respect to the middle of the shielding cover (404).

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