Water surface floating multi-rotor unmanned aerial vehicle with transversely foldable rotors

Abstract

The invention discloses a water surface floating multi-rotor unmanned aerial vehicle with rotor wings capable of being transversely folded, and relates to the technical field of unmanned aerial vehicles, the water surface floating multi-rotor unmanned aerial vehicle with rotor wings capable of being transversely folded comprises a rack, a first folding assembly, a second folding assembly, a water surface floating assembly and a driving folding and unfolding assembly, the machine frame is rotationally connected with a main machine arm through a first folding assembly, and the main machine arm is rotationally connected with a rotor wing machine arm through a second folding assembly. The water surface floating assembly comprises a telescopic floating piece; according to the unmanned aerial vehicle, through the floating piece capable of automatically stretching out and drawing back, the floating piece automatically stretches out in the water floating operation process, the retraction state is kept when the unmanned aerial vehicle is not used, the wind resistance of the floating piece in the flying state is reduced, and the unmanned aerial vehicle is more convenient to use. And in cooperation with the main machine arm and the rotor wing machine arm which can be transversely folded, the occupied space and area of the unmanned aerial vehicle are reduced, and the unmanned aerial vehicle is convenient to carry and store.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a water-floating multi-rotor unmanned aerial vehicle with laterally foldable rotors. Background Art

[0002] Multi-rotor drones, also known as multi-axis drones, are special unmanned rotorcraft with three or more rotor shafts. Each rotor shaft is equipped with one or more electric motors to drive the propellers to rotate to generate lift. The flight attitude is precisely controlled by adjusting the speed difference of each rotor. At present, with the application of drones in various fields, the operating environment and usage scenarios of drones are gradually expanding and increasing. Among them, floating drones can float on the water surface and play an important role in environmental monitoring and fishery management.

[0003] In the existing multi-rotor UAVs that can float on water, their floating structures mainly adopt buoys or other floating materials and structures installed on the bottom of the UAV. Some UAVs adopt a hollow closed body to float on water. The frame of the multi-rotor UAV itself is relatively large, and in order to maintain the stability of each rotor when floating, it is necessary to install more floating structures or adopt a wider hollow body design. When the UAV is in use, the wind will increase the wind resistance, making the stability of the UAV worse when affected by the wind, and the UAV is large in size and inconvenient to store. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a water-floating multi-rotor drone with transversely foldable rotors, which solves the problem.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a water-floating multi-rotor drone with horizontally foldable rotors, comprising a frame, a first folding assembly, a second folding assembly, a water-floating assembly and a driving and retracting assembly, wherein: The frame is rotatably connected to a plurality of mainframe arms that can be folded transversely along the frame through a first folding assembly, and the mainframe arms are rotatably connected to symmetrical rotorcraft arms through a second folding assembly, and the rotorcraft arms can be folded transversely along the mainframe arms; The water surface floating assembly includes a retractable floating member arranged at the bottom of the rotorcraft arm, and the floating member can be extended along the main arm direction to provide buoyancy on the water for the UAV; The driving and retracting assembly is arranged at the bottom of the mainframe arm and is connected and matched with the floating member. The driving and retracting assembly is used to drive the floating member to extend, open and retract.

[0006] Furthermore, the first folding component includes a mounting platform fixed to a side end of the frame, a rotating frame is installed on a side of the mounting platform close to the main arm, a folding shaft is rotatably connected inside the rotating frame, and the main arm and the folding shaft are fixedly connected via a rotating block.

[0007] The main arm is rotated laterally through the folding shaft to make the main arm parallel to the mounting platform, and then the two rotor arms on the main arm are rotated, and the rotor arms are rotated laterally through the hinge plate until the rotor arms are perpendicular to the rotor arms, so that the main arm and the rotor arms are unfolded.

[0008] Furthermore, the second folding component includes a connecting platform fixed at the end of the main arm, a rotating groove is provided in the middle of the connecting platform, a mounting plate is installed in the rotating groove, both ends of the mounting plate are symmetrically rotatably connected with hinge plates, and the symmetrically arranged rotorcraft arms are fixedly connected to the hinge plates and cooperate with the rotating groove.

[0009] The two rotorcraft arms are folded laterally toward the main arm, and then the main arm together with the rotorcraft arm on the main arm are folded laterally toward the frame. The main arm and the rotorcraft arm are folded laterally to reduce the space and area occupied by the drone.

[0010] Furthermore, it also includes a locking component, which includes a front locking plate, a connecting plate and a rear locking plate, the front locking plate and the rear locking plate are respectively detachably mounted on the rotating frame and the upper end of the connecting platform by screws, a rectangular locking pin is installed at the bottom of the front locking plate, the top of the folding shaft passes through the rotating frame and extends to the upper end of the rotating frame, the upper end surface of the folding shaft is provided with a rectangular locking groove, and the locking pin is movably connected and fits with the locking groove.

[0011] Furthermore, the connecting plate is fixed between the front locking plate and the rear locking plate, a locking plug plate is symmetrically installed at the bottom of the rear locking plate, and a symmetrically arranged locking slot is installed at the bottom of the rotating groove of the connecting platform. The locking plug plate passes through the connecting platform and extends into the rotating groove and is movably connected and cooperates with the locking slot. The locking plug plate is located on the front side of the hinge plate and cooperates with the hinge plate.

[0012] After aligning the front locking plate and the rear locking plate with the upper ends of the rotating frame and the connecting platform respectively, the front locking plate and the rear locking plate are moved downward, and the locking pin on the front locking plate is inserted into the locking groove to clamp the folding shaft so that it cannot rotate, so that the main arm remains stable, and the locking plug plate on the rear locking plate passes through the connecting platform and is inserted into the locking slot. Since the locking plug plate is located at the front end of the hinge plate, the hinge plate cannot rotate forward to maintain the stability of the rotorcraft arm.

[0013] Furthermore, the water surface floating assembly also includes a fixed frame and a movable transmission frame fixed at the bottom of the rotorcraft arm, the floating member is a foldable and retractable stacked closed hollow plastic member, and the two ends of the floating member are respectively fixedly connected to the fixed frame and the transmission frame. A ventilation platform is installed at the upper end of the rotorcraft arm, and the bottom of the ventilation platform is connected to the floating member at the connection between the floating member and the fixed frame through a connecting pipe. The ventilation platform is provided with ventilation holes, and the bottom of the ventilation platform is umbrella-shaped and the openings of the ventilation holes are arranged downward at a downward position at the bottom of the ventilation platform.

[0014] When the closed floating member is unfolded, the outside air enters the ventilation platform from the air hole, and then enters the hollow floating member through the connecting pipe, so that the floating member has buoyancy when it contacts the water surface, and the downward air hole is not easy to enter water, which effectively prevents splashing water, rainwater and other external environmental water from entering the floating member. When the floating member is retracted and reset, the floating member retracts to the lower end of the rotorcraft arm. In this process, the air in the hollow floating member enters the ventilation platform along the connecting pipe and is finally squeezed out from the air hole; Furthermore, the driving and retracting assembly includes a driving motor fixed at the bottom of the main arm and a slidable connecting seat, a screw is installed at the output end of the driving motor, a movable plate threadedly connected to the screw is sleeved on the outer wall of the screw, a transmission plate is installed on the movable plate, the transmission plate is connected to the connecting seat through a transmission column, and the transmission frame is connected to the connecting seat through a connecting column.

[0015] The drive motor is started by remote control of the control terminal, and the drive motor drives the screw to rotate. The rotation of the screw causes the movable plate to move forward and backward along the path of the screw. At this time, the drive motor drives the movable plate to move forward, and the movable plate drives the linkage shaft, the mounting frame and the connecting seat to move forward through the connecting column. The mounting frame drives the transmission frame forward through the transmission column. The transmission frame moves forward to stretch the front end of the floating member forward to unfold the floating member.

[0016] Furthermore, a mounting frame is symmetrically installed at the bottom of the connecting seat, and the mounting frame is fixedly connected to the transmission column. A linkage shaft is rotatably connected inside the mounting frame, and the outer wall of the linkage shaft is fixedly connected to the connecting column. A locking plate is detachably installed on the upper end of the connecting seat by screws, and a U-shaped locking frame is symmetrically installed on the side end of the locking plate, and the connecting column can be inserted into the locking frame to limit the rotation of the linkage shaft.

[0017] The locking plate is fixed to the connecting seat by screws so that the transmission column is stuck in the locking frame. When the transmission column subsequently drives the transmission frame to move, the locking frame can prevent the transmission column from rotating. Under the premise that the above-mentioned floating part can rotate along with the folding of the rotor arm without affecting the rotation of the floating part, the transmission plate can drive the floating part to move through the connecting column and the transmission column to expand and retract.

[0018] The present invention has the following beneficial effects: 1. The surface floating multi-rotor drone with transversely foldable rotors can fold the two rotor arms transversely at the side ends of the main arm through the folding shafts and hinge plates in the first folding component and the second folding component after the drone is retracted, and then the main arm and the folded rotor arms are folded transversely at the side ends of the frame, so that the unfolded arms of the drone are folded and fit the frame, reducing the space occupied by the drone, facilitating storage and transportation, making the drone more convenient to store and store, and improving the portability and flexibility of the equipment.

[0019] 2. The multi-rotor drone with horizontally foldable rotors can float on the water surface by means of a retractable floatation member arranged at the bottom of the rotor arm. When floating on the water is required, the motor drives the screw to rotate to drive the connecting seat to move, thereby automatically extending and opening the floatation member. Multiple floatation members are located at the bottom of each rotor arm and extend vertically along the direction of the main arm, so that the drone can float stably on the water surface and is not prone to tilting and shaking.

[0020] 3. When the surface floating multi-rotor UAV with horizontally foldable rotors does not need to float on the water, the motor drives the screw to rotate to drive the connecting seat so that the transmission frame shrinks the floating part and presses it to the bottom of the rotorcraft arm with the same width as the rotorcraft arm. Compared with existing larger floating structures such as pontoons, the shrinking floating part reduces the wind-exposed area of ​​the UAV during flight and improves the stability of the UAV during flight.

[0021] 4. The surface floating multi-rotor drone with transversely foldable rotors can rotate along with the transverse folding of the rotor arms through the linkage shaft, locking frame, transmission column and connecting column on the connecting seat without affecting the telescopic control of the floating parts. The floating parts can be transversely folded together with the rotating wings, and the occupied area of ​​the floating parts is further reduced on the basis of the already contracted part, making the drone more convenient to store.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the water surface floating assembly of the present invention; Figure 3 It is a schematic diagram of the connection between the host arm and the locking assembly of the present invention; Figure 4 This is a schematic diagram of the internal structure of the connection platform of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of area A in the middle; Figure 6 It is a schematic diagram of the structure of the locking assembly of the present invention; Figure 7 This is a schematic diagram of the installation of the water surface floating assembly of the present invention; Figure 8 It is a schematic diagram of the connection between the water surface floating component and the air bag retracting and releasing component of the present invention; Fig. 9 For the present invention Figure 8 Enlarged view of area B in the middle; Fig.10 This is a schematic diagram of the structure of the connecting seat of the present invention; Fig.11 This is a schematic diagram of the connection between the ventilation platform and the telescopic airbag of the present invention; Fig.12 It is a cross-sectional view of the interior of the ventilation platform of the present invention; Fig.13 It is the overall top view of the present invention after folding.

[0024] In the figure, 1, frame; 2, mainframe arm; 3, rotorcraft arm; 4, first folding assembly; 41, mounting platform; 42, rotating frame; 43, folding shaft; 431, locking slot; 5, second folding assembly; 51, connecting platform; 511, rotating slot; 512, locking slot; 52, mounting plate; 53, hinge plate; 6, floating assembly on the water surface; 61, fixing frame; 62, floating member; 621, connecting pipe; 622, ventilation platform; 623, air Hole; 63, transmission frame; 7, locking assembly; 71, front locking plate; 711, locking pin; 72, connecting plate; 73, rear locking plate; 731, locking plug plate; 8, driving retracting assembly; 81, driving motor; 82, screw; 821, transmission plate; 822, movable plate; 83, connecting seat; 84, mounting frame; 841, transmission column; 85, linkage shaft; 851, connecting column; 86, locking plate; 861, locking frame. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] See also Figure 1-Figure 13 The embodiment of the present invention provides a technical solution: a water-floating multi-rotor drone with transversely foldable rotors, comprising a triangular frame 1, a first folding assembly 4, a second folding assembly 5, a water-floating assembly 6 and a driving and retracting assembly 8, wherein the frame 1 is rotatably connected to a plurality of mainframe arms 2 that can be transversely folded along the frame 1 through the first folding assembly 4, the mainframe arms 2 are rotatably connected to symmetrical rotorcraft arms 3 through the second folding assembly 5, the symmetrically arranged rotorcraft arms 3 and the mainframe arms 2 form a T-shape, and the rotorcraft arms 3 can be transversely folded along the mainframe arms 2; The water surface floating assembly 6 includes a retractable floating member 62 arranged at the bottom of the rotorcraft arm 3, and the floating member 62 can be extended along the direction of the main arm 2 to provide buoyancy for the drone on the water; The driving and retracting assembly 8 is disposed at the bottom of the main body arm 2 and is connected and matched with the floating member 62 . The driving and retracting assembly 8 is used to drive the floating member 62 to extend, open and retract.

[0028] See attached Figure 3-6 The first folding component 4 includes a mounting platform 41 fixed to the side end of the frame 1, and a rotating frame 42 is installed on the side of the mounting platform 41 close to the main arm 2. A rotatable folding shaft 43 is rotatably connected in the rotating frame 42. The main arm 2 is fixedly connected to the folding shaft 43 through a rotating block. The main arm 2 rotates horizontally around the folding shaft 43. The second folding component 5 includes a connecting platform 51 fixed to the end of the main arm 2. A rotating groove 511 is provided in the middle of the connecting platform 51. A mounting plate 52 is installed in the rotating groove 511. Hinge plates 53 are symmetrically rotatably connected at both ends of the mounting plate 52. The symmetrically arranged rotorcraft arms 3 are fixedly connected to the hinge plates 53 and cooperate with the rotating grooves 511.

[0029] In one implementation process, the main arm 2 is rotated laterally through the folding shaft 43 so that the main arm 2 is parallel to the mounting platform 41, and then the two rotorcraft arms 3 on the main arm 2 are rotated, and the rotorcraft arms 3 are rotated laterally through the hinge plate 53 until the rotorcraft arms 3 are perpendicular to the rotorcraft arms 3, so that the main arm 2 and the rotorcraft arms 3 are unfolded; In another implementation process, the two rotor arms 3 are rotated and folded laterally toward the main arm 2, and then the main arm 2 together with the rotor arm 3 on the main arm 2 are folded laterally toward the frame 1, and the main arm 2 and the rotor arm 3 are folded laterally to reduce the space and area occupied by the drone.

[0030] Furthermore, it also includes a locking assembly 7, which includes a front locking plate 71, a connecting plate 72 and a rear locking plate 73. The front locking plate 71 and the rear locking plate 73 are detachably mounted on the rotating frame 42 and the upper end of the connecting platform 51 by screws. A rectangular locking pin 711 is installed at the bottom of the front locking plate 71. The top of the folding shaft 43 passes through the rotating frame 42 and extends to the upper end of the rotating frame 42. A rectangular locking groove 431 is provided on the upper end surface of the folding shaft 43. The locking pin 711 and the locking groove 431 are both Rectangular, the locking pin 711 is movably connected and fit with the locking groove 431, the connecting plate 72 is fixed between the front locking plate 71 and the rear locking plate 73, the locking plug plate 731 is symmetrically installed at the bottom of the rear locking plate 73, and the bottom of the rotating groove 511 of the connecting platform 51 is symmetrically installed with the locking slot 512, the locking plug plate 731 passes through the connecting platform 51 and extends into the rotating groove 511 and is movably connected and fits with the locking slot 512, and the locking plug plate 731 is located at the front side of the hinge plate 53 and fits with the hinge plate 53.

[0031] Specifically, the front locking plate 71 and the rear locking plate 73 are aligned with the upper ends of the rotating frame 42 and the connecting platform 51 respectively, and then the front locking plate 71 and the rear locking plate 73 are moved downward, and the locking pin 711 on the front locking plate 71 is inserted into the locking groove 431 to clamp the folding shaft 43 so that it cannot rotate, so that the main arm 2 remains stable, and the locking plug plate 731 on the rear locking plate 73 passes through the connecting platform 51 and is inserted into the locking slot 512. Since the locking plug plate 731 is located at the front end of the hinge plate 53, the hinge plate 53 cannot rotate forward to maintain the stability of the rotorcraft arm 3.

[0032] See attached Figure 7 , Attachment Fig.11 , Attachment Fig.12 The water surface floating component 6 also includes a fixed frame 61 fixed to the bottom of the rotorcraft arm 3 and a movable transmission frame 63. The floating member 62 is a foldable and retractable layered closed hollow plastic member, and the floating member 62 is made of elastic material and can be stretched, extended or contracted. The two ends of the floating member 62 are respectively fixedly connected to the fixed frame 61 and the transmission frame 63. A ventilation platform 622 is installed on the upper end of the rotorcraft arm 3. The bottom of the ventilation platform 622 is connected to the floating member 62 at the connection between the floating member 62 and the fixed frame 61 through a connecting pipe 621. The ventilation platform 622 is provided with an air hole 623. The bottom of the ventilation platform 622 is umbrella-shaped and the opening of the air hole 623 is arranged downward at the bottom of the ventilation platform 622.

[0033] Specifically, during the unfolding process of the closed floating member 62, the outside air enters the air permeable platform 622 from the air hole 623, and then enters the hollow floating member 62 through the connecting tube 621, so that the floating member 62 has buoyancy when in contact with the water surface, and the downward air hole 623 is not easy to enter water, which effectively prevents splashing water, rainwater and other external environmental water from entering the floating member 62. When the floating member 62 shrinks and resets, the floating member 62 retracts to the lower end of the rotorcraft arm 3. In this process, the air in the hollow floating member 62 enters the air permeable platform 622 along the connecting tube 621 and is finally squeezed out from the air hole 623; See attached Figure 8-10 The driving and retracting assembly 8 includes a driving motor 81 fixed at the bottom of the main arm 2 and a slidable connecting seat 83. The driving motor 81 is connected to the wireless control system inside the drone and can be remotely controlled through the control terminal. It is a conventional remote control system and will not be described in detail. A screw 82 is installed at the output end of the driving motor 81. A movable plate 822 threadedly connected to the screw 82 is sleeved on the outer wall of the screw 82. A transmission plate 821 is installed on the movable plate 822. The transmission plate 821 is connected to the connecting seat 83 through a transmission column 841, and the transmission frame 63 is connected to the connecting seat 83 through a connecting column 851.

[0034] Specifically, the drive motor 81 is started by remotely controlling the control terminal, and the drive motor 81 drives the screw 82 to rotate. The rotation of the screw 82 causes the movable plate 822 to move forward and backward along the path of the screw 82. At this time, the drive motor 81 drives the movable plate 822 to move forward, and the movable plate 822 drives the linkage shaft 85, the mounting frame 84 and the connecting seat 83 to move forward through the connecting column 851. The mounting frame 84 drives the transmission frame 63 to move forward through the transmission column 841. The transmission frame 63 moves forward to stretch the front end of the floating member 62 forward to unfold the floating member 62.

[0035] The transmission frame 63 and the transmission column 841 at the bottom of the rotor arm 3 rotate along with the rotation of the rotor arm 3 through the linkage shaft 85, so that the floating member 62 at the bottom of the rotor arm 3 can rotate along with the folding of the rotor arm 3.

[0036] Furthermore, a mounting frame 84 is symmetrically installed at the bottom of the connecting seat 83, and the mounting frame 84 is fixedly connected to the transmission column 841. A linkage shaft 85 is rotatably connected inside the mounting frame 84, and the outer wall of the linkage shaft 85 is fixedly connected to the connecting column 851. A locking plate 86 is detachably installed on the upper end of the connecting seat 83 by screws, and a U-shaped locking frame 861 is symmetrically installed on the side end of the locking plate 86. The connecting column 851 can be inserted into the locking frame 861 to limit the rotation of the linkage shaft 85.

[0037] Specifically, the locking plate 86 is fixed to the connecting seat 83 by screws, so that the transmission column 841 is stuck in the locking frame 861. When the transmission column 841 subsequently drives the transmission frame 63 to move, the locking frame 861 can prevent the transmission column 841 from rotating. Under the premise that the above-mentioned floating member 62 can rotate along with the folding of the rotor arm 3 without affecting the rotation of the above-mentioned floating member 62, the transmission plate 821 can drive the floating member 62 to move and expand and contract through the connecting column 851 and the transmission column 841.

[0038] The present invention provides a method of using and function of a water-floating multi-rotor drone with transversely foldable rotors: after the drone is taken out of the storage box, the main engine arm 2 is rotated transversely to make the main engine arm 2 parallel to the mounting platform 41, and then the two rotor arms 3 on the main engine arm 2 are rotated until the rotor arms 3 are perpendicular to the rotor arms 3. At this time, the main engine arm 2 and the rotor arms 3 are kept in position unchanged, and the front locking plate 71 and the rear locking plate 73 are respectively aligned with the upper ends of the rotating frame 42 and the connecting platform 51, and then the front locking plate 71 and the rear locking plate 73 are moved downward, and the locking pin 711 on the front locking plate 71 is inserted into the locking groove 431 to clamp the folding shaft 43 so that it cannot rotate, so that the main engine arm 2 remains stable, and the locking plug plate 731 on the rear locking plate 73 passes through the connecting platform 51 and is inserted into the locking In the slot 512, since the locking plug plate 731 is located at the front end of the hinge plate 53, the hinge plate 53 cannot rotate forward to maintain the stability of the rotor arm 3. Finally, the front locking plate 71 and the rear locking plate 73 are fixed to the mounting platform 41 and the connecting platform 51 by screws, and then the locking plate 86 is fixed to the connecting seat 83 by screws, so that the transmission column 841 is stuck in the locking frame 861. When the transmission column 841 drives the transmission frame 63 to move, the locking frame 861 can prevent the transmission column 841 from rotating, and the arm is unfolded and fixed. At this time, the drone can be used for normal flight. During the flight of the drone, the floating member 62 is retracted to the lower end of the rotor arm 3 and has the same width as the rotor arm 3. The wind resistance generated by the wind force on the floating member 62 is small. When the drone needs to land and float on the water during flight, the drive motor 81 is started by remotely controlling the control terminal, and the drive motor 81 drives the screw 82 to rotate. The rotation of the screw 82 causes the movable plate 822 to move forward and backward along the path of the screw 82. At this time, the drive motor 81 drives the movable plate 822 to move forward, and the movable plate 822 drives the linkage shaft 85, the mounting frame 84 and the connecting seat 83 to move forward through the connecting column 851. The mounting frame 84 drives the transmission frame 63 to move forward through the transmission column 841. The transmission frame 63 moves forward to stretch the front end of the floating member 62 forward to unfold the floating member 62. During the unfolding process, the closed floating member 62 , the outside air enters the air permeable platform 622 from the air hole 623, and then enters the hollow floating member 62 through the connecting pipe 621, so that the floating member 62 has buoyancy when it contacts the water surface, and the downward air hole 623 is not easy to enter water, which effectively prevents splashing water, rainwater and other external environmental water from entering the floating member 62. After the UAV takes off from the water surface, the driving motor 81 is controlled to drive the movable plate 822 to move backward so that the transmission frame 63 drives the floating member 62 to shrink and reset, and retract to the lower end of the rotorcraft arm 3. In this process, the air in the hollow floating member 62 enters the air permeable platform 622 along the connecting pipe 621 and is finally squeezed out from the air hole 623; After the drone is used and returned for recovery, the screws on the front locking plate 71, the rear locking plate 73 and the locking plate 86 are removed, and then the front locking plate 71 and the rear locking plate 73 are lifted up, taken out and properly stored, and the locking plate 86 together with the locking frame 861 are removed from the connecting seat 83 and stored. At this time, the two rotor arms 3 are rotated and folded laterally toward the main arm 2. During this process, the transmission frame 63 and the transmission column 841 at the bottom of the rotor arm 3 rotate along with the rotation of the rotor arm 3 through the linkage shaft 85, and then the main arm 2 together with the rotor arm 3 on the main arm 2 are folded laterally toward the frame 1, completing the folding of the drone and reducing the space and area occupied by the drone.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-rotor drone floating on the water surface with laterally foldable rotors, comprising a frame (1), characterized in that: It also includes a first folding assembly (4), a second folding assembly (5), a water surface floating assembly (6) and a driving and retracting assembly (8), wherein: The frame (1) is rotatably connected to a plurality of mainframe arms (2) that can be folded laterally along the frame (1) via a first folding assembly (4); the mainframe arms (2) are rotatably connected to symmetrical rotorcraft arms (3) via a second folding assembly (5); the rotorcraft arms (3) can be folded laterally along the mainframe arms (2); The water surface floating assembly (6) comprises a retractable floating member (62) arranged at the bottom of the rotorcraft arm (3); the floating member (62) can be extended along the direction of the main machine arm (2) to provide buoyancy on water for the drone; The driving and retracting assembly (8) is arranged at the bottom of the mainframe arm (2) and is connected to and cooperates with the floating member (62). The driving and retracting assembly (8) is used to drive the floating member (62) to extend, open and retract.

2. The multi-rotor drone with horizontally foldable rotors according to claim 1, characterized in that: The first folding assembly (4) comprises a mounting platform (41) fixed to a side end of the frame (1); a rotating frame (42) is mounted on a side of the mounting platform (41) close to the mainframe arm (2); a folding rotating shaft (43) is rotatably connected inside the rotating frame (42); and the mainframe arm (2) and the folding rotating shaft (43) are fixedly connected via a rotating block.

3. The multi-rotor UAV with horizontally foldable rotors according to claim 2, characterized in that: The second folding assembly (5) comprises a connecting platform (51) fixed to the end of the main body arm (2), a rotating groove (511) being provided in the middle of the connecting platform (51), a mounting plate (52) being installed in the rotating groove (511), hinge plates (53) being symmetrically rotatably connected at both ends of the mounting plate (52), and the symmetrically arranged rotorcraft arms (3) are fixedly connected to the hinge plates (53) and cooperate with the rotating groove (511).

4. The multi-rotor drone with horizontally foldable rotors according to claim 3, characterized in that: The folding shaft (43) further comprises a locking assembly (7), wherein the locking assembly (7) comprises a front locking plate (71), a connecting plate (72) and a rear locking plate (73), wherein the front locking plate (71) and the rear locking plate (73) are respectively detachably mounted on the rotating frame (42) and the upper end of the connecting platform (51) by means of screws, wherein a rectangular locking pin (711) is mounted on the bottom of the front locking plate (71), wherein the top of the folding shaft (43) passes through the rotating frame (42) and extends to the upper end of the rotating frame (42), wherein a rectangular locking groove (431) is disposed on the upper end surface of the folding shaft (43), and wherein the locking pin (711) is movably connected to and fits with the locking groove (431).

5. The multi-rotor UAV with horizontally foldable rotors according to claim 4, characterized in that: The connecting plate (72) is fixed between the front locking plate (71) and the rear locking plate (73); a locking plug plate (731) is symmetrically mounted on the bottom of the rear locking plate (73); a symmetrically arranged locking slot (512) is mounted on the bottom of the rotating groove (511) of the connecting platform (51); the locking plug plate (731) penetrates the connecting platform (51) and extends into the rotating groove (511) and is movably connected and matched with the locking slot (512); the locking plug plate (731) is located at the front side of the hinge plate (53) and matches with the hinge plate (53).

6. The multi-rotor UAV with horizontally foldable rotors according to claim 1, characterized in that: The water surface floating assembly (6) further comprises a fixed frame (61) fixed to the bottom of the rotorcraft arm (3) and a movable transmission frame (63); the floating member (62) is a foldable and telescopic laminated closed hollow plastic member; two ends of the floating member (62) are respectively fixedly connected to the fixed frame (61) and the transmission frame (63).

7. The multi-rotor UAV with horizontally foldable rotors according to claim 6, characterized in that: A ventilation platform (622) is installed at the upper end of the rotorcraft arm (3); the bottom of the ventilation platform (622) is connected to the floating member (62) at the connection between the floating member (62) and the fixed frame (61) through a connecting pipe (621); the ventilation platform (622) is provided with ventilation holes (623); the bottom of the ventilation platform (622) is umbrella-shaped, and the openings of the ventilation holes (623) are arranged downwardly at a downward position at the bottom of the ventilation platform (622).

8. The multi-rotor UAV with horizontally foldable rotors according to claim 7, characterized in that: The driving retractable assembly (8) comprises a driving motor (81) fixed at the bottom of the mainframe arm (2) and a slidable connecting seat (83); a screw rod (82) is mounted on the output end of the driving motor (81); a movable plate (822) threadedly connected to the screw rod (82) is sleeved on the outer wall of the screw rod (82); a transmission plate (821) is mounted on the movable plate (822); the transmission plate (821) is connected to the connecting seat (83) via a transmission column (841); and the transmission frame (63) is connected to the connecting seat (83) via a connecting column (851).

9. The multi-rotor drone with horizontally foldable rotors according to claim 8, characterized in that: A mounting frame (84) is symmetrically mounted on the bottom of the connecting seat (83); the mounting frame (84) is fixedly connected to a transmission column (841); a linkage shaft (85) is rotatably connected inside the mounting frame (84); an outer wall of the linkage shaft (85) is fixedly connected to a connecting column (851); a locking plate (86) is detachably mounted on the upper end of the connecting seat (83) by means of screws; a U-shaped locking frame (861) is symmetrically mounted on the side end of the locking plate (86); and the connecting column (851) can be inserted into the locking frame (861) to limit the rotation of the linkage shaft (85).

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