An aerial multi-angle photogrammetry device for drones

Abstract

The present invention discloses a multi-angle oblique photogrammetry device for an unmanned aerial vehicle, which includes a plurality of connecting arms arranged on the unmanned aerial vehicle and mounting frames respectively arranged on the connecting arms. A touch mechanism connected to a rotating shaft is arranged on each of the mounting frames. A plurality of trigger blocks movably arranged are evenly arranged on the touch mechanism. A working cavity is also arranged at the center of the unmanned aerial vehicle. A balancing mechanism is arranged in the working cavity. This multi-angle oblique photogrammetry device for an unmanned aerial vehicle is different from the prior art. When the wing motor drives the rotating shaft to rotate, it will drive the touch mechanism to work. The touch mechanism will drive the plurality of trigger blocks to rotate synchronously and form a centrifugal force. When the wing motor is abnormal, the centrifugal force disappears, which will drive the plurality of trigger blocks to shift, thereby cutting off the power supply to all the wing motors. And through the balancing mechanism, when the wing motor is not in use, the original balance state of the unmanned aerial vehicle is ensured, thereby avoiding the situation that one side of the unmanned aerial vehicle wing touches the ground first.

Description

Technical Field

[0001] The present invention relates to the technical field of UAV measurement equipment, and specifically relates to a multi-angle oblique photogrammetry measurement equipment for UAVs. Background Technique

[0002] Oblique photogrammetry technology is a high-tech developed in the international photogrammetry field in the past ten years. This technology synchronously collects images from one vertical, four oblique, and five different perspectives to obtain high-resolution textures of the top and side views of buildings. It can not only truly reflect the ground object situation and accurately obtain object-side texture information, but also generate a real three-dimensional city model through advanced positioning, fusion, modeling and other technologies. Oblique photogrammetry technology comprehensively senses complex scenes in a large range, high-precision, and high-clarity manner. The data results generated through efficient data collection equipment and professional data processing processes intuitively reflect the appearance, position, height and other attributes of ground objects, providing guarantees for real effects and surveying and mapping-level accuracy. Oblique photogrammetry modeling data has gradually become an important part of the urban spatial data framework.

[0003] However, we found in actual use that when the existing UAV is running, the rotation of one or more motors will be abnormal due to the failure of one or more motors, which will cause the UAV to directly fall from a high altitude. However, when one or more motors fail, their rotation will be restricted and they cannot provide the driving force for the normal operation of the UAV. Therefore, the running balance of the UAV will be broken, causing the UAV to tilt to one side or even the whole machine to flip. If the UAV falls in this state, it may happen that one side of the UAV wing touches the ground first, causing damage to the wing and the electrical components inside the UAV, increasing the maintenance cost to a certain extent, and even making it impossible to repair. For this reason, we propose a multi-angle oblique photogrammetry measurement equipment for UAVs. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-angle oblique photogrammetry measurement equipment for UAVs to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present invention provides the following technical solution: A multi-angle oblique photogrammetry device for an unmanned aerial vehicle, including a plurality of connecting arms arranged on the unmanned aerial vehicle and mounting frames respectively arranged on the connecting arms. A touch mechanism connected to a rotating shaft is arranged on each mounting frame. A plurality of trigger blocks movably arranged are evenly arranged on the touch mechanism. A working cavity is also arranged at the center of the unmanned aerial vehicle. A balancing mechanism is arranged in the working cavity. Different from the prior art, when the wing motor drives the rotating shaft to rotate, it will drive the touch mechanism to work. The touch mechanism will drive the plurality of trigger blocks to rotate synchronously and form a centrifugal force. When the wing motor is abnormal and the centrifugal force disappears, it will drive the plurality of trigger blocks to shift, thereby cutting off the power supply to all wing motors. And through the balancing mechanism, when the wing motor is not in use, the original balance state of the unmanned aerial vehicle is ensured, thereby avoiding the situation where one side of the unmanned aerial vehicle wing touches the ground first.

[0006] Preferably, the touch mechanism includes a main shaft rotatably arranged on the connecting arm. A driving member is arranged between the rotating shaft and the main shaft, and the driving member can be used to drive the main shaft to rotate;

[0007] An eccentric component is arranged outside the main shaft. A plurality of the eccentric components are evenly arranged and are respectively used to drive the adjacent trigger blocks to rotate and form a centrifugal force;

[0008] A triggering member is arranged on the mounting frame. After the centrifugal force of the trigger block disappears, it can drive the triggering member to work, thereby cutting off the power supply to all wing motors.

[0009] Preferably, the driving member includes two belt pulleys respectively arranged on the rotating shaft and the main shaft, and a synchronous belt is arranged between the two belt pulleys.

[0010] Preferably, the eccentric component includes a support frame arranged on the main shaft. A fixed frame is arranged on the support frame, and the trigger block is slidably arranged in the fixed frame;

[0011] A positioning ring is arranged on the main shaft. A return spring is arranged on the positioning ring. A connecting block with one side connected to the return spring is arranged on the trigger block. A clamping component is arranged between the connecting block and the trigger block. Through the clamping component, after the centrifugal force received by the trigger block disappears, the clamping limit between the connecting block and the trigger block can be cancelled, so that the trigger block can shift in the fixed frame.

[0012] Preferably, mounting grooves are formed on both sides of the trigger block. The clamping component includes a positioning plate disposed in the mounting groove. A displacement post is movably arranged on the positioning plate. A buckle is arranged at the end of the displacement post. A clamping groove is formed on the connecting block, and the buckle can be clamped in the clamping groove. A wedge block is arranged at one end of the displacement post away from the buckle. A first compression spring is further arranged on the outer side of the displacement post, and two ends of the first compression spring are respectively connected with the positioning plate and the wedge block;

[0013] A ejecting member is further arranged in the trigger block, and the ejecting member is used to drive the wedge block to displace, thereby canceling the clamping of the buckle and the clamping groove.

[0014] Preferably, fixing grooves are further formed on both sides of the trigger block. The ejecting member includes ejecting rods respectively and movably arranged in the fixing grooves. One end of each ejecting rod extends to the outside of the trigger block. After the centrifugal force of the trigger block disappears, the ejecting rod will strike the inner wall of the fixing frame, thereby enabling the ejecting rod to drive the adjacent wedge block to displace. Disks are arranged on the ejecting rods, and second compression springs are sleeved on the outer sides of the ejecting rods. Two ends of the second compression springs are respectively in contact with the disks and the trigger block.

[0015] Preferably, the bottom of the mounting frame is circular. The triggering member includes a plurality of connecting springs uniformly arranged at the bottom of the mounting frame. A displacement ring is arranged on the plurality of connecting springs. A trigger switch is arranged on the mounting frame, and the trigger switch is electrically connected to the wing motor.

[0016] Preferably, the balancing mechanism includes a universal joint seat arranged in the working cavity. A universal shaft is arranged in the universal joint seat. A cross frame is arranged in the working cavity. A counterweight block is slidably arranged in the cross frame. A balancing transmission member is arranged on the cross frame. Through the balancing transmission member, the counterweight block can be driven to displace, thereby ensuring the balance of the drone;

[0017] A balancing control member is arranged in the working cavity. The balancing control member is used to provide a driving force for the displacement of the counterweight block when the drone tilts to one side.

[0018] Preferably, the balancing transmission member includes a positioning spring arranged at the bottom of the working cavity. Two ends of the positioning spring are respectively connected with the working cavity and the counterweight block. Fixed magnets are arranged around the counterweight block, and electromagnets are arranged around the cross frame.

[0019] Preferably, the balancing control member includes a plurality of electrode plates arranged at the bottom of the universal shaft. The plurality of electrode plates are arranged in two upper and lower layers, thereby avoiding interference during rotation. A dielectric plate is further arranged on the inner wall of the working cavity. When the dielectric plate is in contact with the electrode plate matched with it, the electromagnet in the opposite direction to the dielectric plate can be powered on, so that the electromagnet adsorbs the fixed magnet, thereby driving the counterweight block to displace.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. When the wing motor drives the rotating shaft to rotate in the present invention, it will drive the touch mechanism to work. The touch mechanism will drive multiple trigger blocks to rotate synchronously and generate centrifugal force. When the wing motor is abnormal, the centrifugal force disappears, which will drive the multiple trigger blocks to shift, thereby cutting off the power supply to all wing motors.

[0022] 2. When the wing motor is not in use, the present invention ensures the original balance state of the drone through the balance mechanism, thereby avoiding the situation where one side of the drone wing touches the ground first. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is the present invention Figure 1 schematic diagram of the structure in another orientation;

[0025] Figure 3 is the present invention Figure 1 schematic diagram of the sectional structure;

[0026] Figure 4 is the enlarged schematic diagram of area A of the present invention;

[0027] Figure 5 is the present invention Figure 3 schematic diagram of the sectional structure;

[0028] Figure 6 is the present invention Figure 5 schematic diagram of the sectional structure;

[0029] Figure 7 is the enlarged schematic diagram of area B of the present invention;

[0030] Figure 8 is the present invention Figure 2 schematic diagram of the sectional structure;

[0031] Figure 9 is the present invention Figure 8 schematic diagram of the sectional structure;

[0032] Figure 10 is the schematic diagram of the universal shaft structure of the present invention.

[0033] In the figure: 1 - connecting arm; 2 - mounting bracket; 3 - touch mechanism; 31 - main shaft; 4 - driving part; 41 - pulley; 42 - synchronous belt; 5 - centrifugal component; 51 - support frame; 52 - fixed frame; 53 - positioning ring; 54 - return spring; 55 - connecting block; 6 - clamping component; 61 - mounting groove; 62 - positioning plate; 63 - displacement column; 64 - buckle; 65 - clamping groove; 66 - wedge block; 67 - compression spring I; 7 - ejecting part; 71 - fixed groove; 72 - ejecting rod; 73 - disc; 74 - compression spring II; 8 - triggering part; 81 - connecting spring; 82 - displacement ring; 83 - trigger switch; 9 - balancing mechanism; 91 - universal joint seat; 92 - universal shaft; 93 - cross frame; 94 - counterweight; 10 - balancing transmission part; 101 - positioning spring; 102 - fixed magnet; 103 - electromagnet; 11 - balancing control part; 111 - electrode plate; 112 - dielectric plate; 12 - wing motor; 13 - rotating shaft; 14 - wing; 15 - trigger block; 16 - working cavity. Detailed implementation mode

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figure 1-10 , the present invention provides a technical solution:

[0036] An aerial multi-angle oblique photogrammetry device for a drone, including a plurality of connecting arms 1 arranged on the drone and mounting brackets 2 respectively arranged on the connecting arms 1.

[0037] Wing motors 12 are arranged on the connecting arms 1, and the plurality of wing motors 12 are connected in series through circuits. Thus, after any one of the trigger switches 83 is triggered, all the wing motors 12 can be disconnected simultaneously. Rotating shafts 13 connected to the wing motors 12 are rotatably arranged on the connecting arms 1, and wing blades 14 are arranged at the ends of the rotating shafts 13. Touch mechanisms 3 connected to the rotating shafts 13 are arranged on the mounting brackets 2, and a plurality of trigger blocks 15 movably arranged are evenly arranged on the touch mechanisms 3. When the wing motors 12 drive the rotating shafts 13 to rotate, the touch mechanisms 3 will be driven to work. The touch mechanisms 3 will drive the plurality of trigger blocks 15 to rotate synchronously and form a centrifugal force. When the wing motors 12 are abnormal and the centrifugal force disappears, the plurality of trigger blocks 15 will be displaced, thereby cutting off the power supply of all the wing motors 12;

[0038] The touch mechanism 3 includes a main shaft 31 rotatably arranged on the connecting arm 1. A driving member 4 is arranged between the rotating shaft 13 and the main shaft 31. The driving member 4 can drive the main shaft 31 to rotate. The driving member 4 includes two pulleys 41 respectively arranged on the rotating shaft 13 and the main shaft 31, and a synchronous belt 42 is arranged between the two pulleys 41;

[0039] A centrifugal component 5 is arranged outside the main shaft 31. A plurality of centrifugal components 5 are evenly arranged and are respectively used to drive the adjacent trigger blocks 15 to rotate and form centrifugal force. The centrifugal component 5 includes a support frame 51 arranged on the main shaft 31. A fixed frame 52 is arranged on the support frame 51. The trigger block 15 is slidably arranged in the fixed frame 52. A protrusion is arranged on the fixed frame 52. Through the arrangement of the protrusion, the trigger block 15 falls out of the fixed frame 52 before the centrifugal force is generated;

[0040] A positioning ring 53 is arranged on the main shaft 31. A return spring 54 is arranged on the positioning ring 53. A connecting block 55 with one side connected to the return spring 54 is arranged on the trigger block 15. A clamping component 6 is arranged between the connecting block 55 and the trigger block 15. Through the clamping component 6, after the centrifugal force received by the trigger block 15 disappears, the clamping limit between the connecting block 55 and the trigger block 15 can be cancelled, so that the trigger block 15 can be displaced in the fixed frame 52;

[0041] Installation grooves 61 are opened on both sides of the trigger block 15. The clamping component 6 includes a positioning plate 62 arranged in the installation groove 61. A displacement column 63 is movably arranged on the positioning plate 62. A buckle 64 is arranged at the end of the displacement column 63. A clamping groove 65 is opened on the connecting block 55. The buckle 64 can be clamped in the clamping groove 65. A wedge-shaped block 66 is arranged at one end of the displacement column 63 away from the buckle 64. A first compression spring 67 is also arranged outside the displacement column 63. Both ends of the first compression spring 67 are respectively connected to the positioning plate 62 and the wedge-shaped block 66;

[0042] An ejecting member 7 is also arranged in the trigger block 15. The ejecting member 7 is used to drive the wedge-shaped block 66 to displace, so as to cancel the clamping of the buckle 64 and the clamping groove 65;

[0043] Fixing grooves 71 are also arranged on both sides of the trigger block 15. The ejecting member 7 includes ejecting rods 72 respectively movably arranged in the fixing grooves 71. One end of the ejecting rod 72 extends to the outside of the trigger block 15. After the centrifugal force of the trigger block 15 disappears, the ejecting rod 72 will hit the inner wall of the fixed frame 52, so that the ejecting rod 72 drives the adjacent wedge-shaped block 66 to displace. Discs 73 are arranged on the ejecting rods 72, and second compression springs 74 are sleeved outside the ejecting rods 72. Both ends of the second compression springs 74 are respectively in contact with the discs 73 and the trigger block 15;

[0044] A trigger member 8 is provided on the mounting bracket 2. After the centrifugal force of the trigger block 15 disappears, it can drive the trigger member 8 to operate, thereby cutting off the power supply to all the wing motors 12;

[0045] The bottom of the mounting bracket 2 is circular. The trigger member 8 includes a plurality of connecting springs 81 uniformly arranged at the bottom of the mounting bracket 2. A shifting ring 82 is arranged on the plurality of connecting springs 81. A trigger switch 83 is arranged on the mounting bracket 2, and the trigger switch 83 is electrically connected to the wing motor 12.

[0046] A working cavity 16 is also provided in the center of the drone. A balancing mechanism 9 is arranged in the working cavity 16. The balancing mechanism 9 is used to ensure the original balance state of the drone when the wing motors 12 are not in use, thereby avoiding the situation where one side of the drone's wing touches the ground first. The balancing mechanism 9 includes a universal joint seat 91 arranged in the working cavity 16. A universal shaft 92 is arranged in the universal joint seat 91. A cross frame 93 is arranged in the working cavity 16. A counterweight block 94 is slidably arranged in the cross frame 93. A balancing transmission member 10 is arranged on the cross frame 93. The counterweight block 94 can be driven to shift through the balancing transmission member 10, thereby ensuring the balance of the drone;

[0047] The balancing transmission member 10 includes a positioning spring 101 arranged at the bottom of the working cavity 16. The two ends of the positioning spring 101 are respectively connected to the working cavity 16 and the counterweight block 94. Fixed magnets 102 are arranged around the counterweight block 94, and electromagnets 103 are arranged around the cross frame 93.

[0048] A balancing control member 11 is arranged in the working cavity 16. The balancing control member 11 is used to provide a driving force for the shifting of the counterweight block 94 when the drone tilts to one side. The balancing control member 11 includes a plurality of electrode plates 111 arranged at the bottom of the universal shaft 92. The plurality of electrode plates 111 are arranged in two upper and lower layers to avoid interference during rotation. A dielectric plate 112 is also arranged on the inner wall of the working cavity 16. When the dielectric plate 112 contacts the electrode plate 111 that cooperates with it, the electromagnet 103 in the opposite direction to the dielectric plate 112 can be energized, so that the electromagnet 103 adsorbs the fixed magnet 102, thereby driving the counterweight block 94 to shift.

[0049] In use, the wing motor 12 drives the rotating shaft 13 to rotate. When the rotating shaft 13 rotates, it will drive the belt pulley 41 to rotate, and under the action of the synchronous belt 42, it will drive another belt pulley 41 and the main shaft 31 to rotate. When the main shaft 31 rotates, it will drive the support frame 51 and the fixed frame 52 located thereon to rotate synchronously. At the same time, the trigger block 15 slidably arranged in the fixed frame 52 will slide outwards and form a centrifugal force. When the wing motor 12 fails due to non-battery and circuit failures, the rotating shaft 13 will stop rotating immediately, and then drive the main shaft 31 to stop rotating. The centrifugal force of the trigger block 15 will disappear instantly. Under the action of the return spring 54, the trigger block 15 will be quickly pulled back, and the ejector rod 72 will hit the inner wall of the fixed frame 52, thereby causing the ejector rod 72 to drive the adjacent wedge block 66 to shift. When the wedge block 66 shifts, it will drive the shift post 63 and the buckle 64 to shift, so that the buckle 64 disengages from the card slot 65 and cancels the clamping limit between the two;

[0050] The trigger block 15 will directly fall and squeeze the shift ring 82 downwards, so that the shift ring 82 squeezes the trigger switch 83 to stop the adjacent wing motor 12. Since multiple wing motors 12 are connected in series, multiple wing motors 12 will be stopped at the same time, avoiding the normal and stable operation of the drone being affected by the failure of a certain wing motor 12, and ensuring that the bottom frame of the drone touches the ground first;

[0051] During the falling process, when the drone tilts, the universal shaft 92 will drive the electrode plate at the bottom to deflect, so that the electrode plate gradually contacts the electrolyte, and then can energize the electromagnet 103 in the opposite direction to the dielectric plate 112, so that the electromagnet 103 adsorbs the fixed magnet 102, and then drives the counterweight 94 to shift. The greater the deflection, the greater the adsorption force of the electromagnet 103, and then the drone is driven to maintain balance.

[0052] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0053] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aerial multi-angle photogrammetry device for drones, comprising a plurality of connecting arms (1) arranged on the drone and mounting frames (2) respectively arranged on the connecting arms (1); It is characterized in that: Wing motors (12) are arranged on the connecting arms (1), rotating shafts (13) connected to the wing motors (12) are rotatably arranged on the connecting arms (1), wing blades (14) are arranged at the ends of the rotating shafts (13), touch mechanisms (3) connected to the rotating shafts (13) are arranged on the mounting frames (2), a plurality of trigger blocks (15) are movably arranged on the touch mechanisms (3) evenly. When the wing motors (12) drive the rotating shafts (13) to rotate, the touch mechanisms (3) will be driven to work. The touch mechanisms (3) will drive the plurality of trigger blocks (15) to rotate synchronously and generate centrifugal force. When the wing motors (12) are abnormal, the centrifugal force disappears, which will drive the plurality of trigger blocks (15) to shift, and then cut off the power supply of all the wing motors (12); A working chamber (16) is also arranged at the center of the drone, and a balancing mechanism (9) is arranged in the working chamber (16). The balancing mechanism (9) is used to ensure the original balance state of the drone when the wing motors (12) are not in use, thereby avoiding the situation that one side of the drone's wing touches the ground first.

2. The multi-angle oblique photogrammetry device for unmanned aerial vehicle according to claim 1, wherein: The touch mechanism (3) comprises a main shaft (31) rotatably arranged on the connecting arm (1), and a driving member (4) is arranged between the rotating shaft (13) and the main shaft (31). The driving member (4) can be used to drive the main shaft (31) to rotate; A plurality of centrifugal components (5) are arranged on the outer side of the main shaft (31), and are evenly arranged respectively for driving the adjacent trigger blocks (15) to rotate and generate centrifugal force; A trigger member (8) is arranged on the mounting frame (2). After the centrifugal force of the trigger block (15) disappears, the trigger member (8) can be driven to work, and then the power supply of all the wing motors (12) is cut off.

3. The multi-angle oblique photogrammetry device for an unmanned aerial vehicle according to claim 2, characterized in that: The driving member (4) comprises two pulleys (41) respectively arranged on the rotating shaft (13) and the main shaft (31), and a synchronous belt (42) is arranged between the two pulleys (41).

4. The multi-angle oblique photogrammetry device for an unmanned aerial vehicle according to claim 3, characterized in that: The centrifugal component (5) comprises a support frame (51) arranged on the main shaft (31), a fixed frame (52) is arranged on the support frame (51), and the trigger block (15) is slidably arranged in the fixed frame (52); A positioning ring (53) is arranged on the main shaft (31), a return spring (54) is arranged on the positioning ring (53), a connecting block (55) with one side connected to the return spring (54) is arranged on the trigger block (15), and a clamping component (6) is arranged between the connecting block (55) and the trigger block (15). Through the clamping component (6), the clamping limit between the connecting block (55) and the trigger block (15) can be cancelled after the centrifugal force received by the trigger block (15) disappears, so that the trigger block (15) can shift in the fixed frame (52).

5. The multi-angle oblique photogrammetry device for an unmanned aerial vehicle according to claim 4, characterized in that: On both sides of the trigger block (15), mounting grooves (61) are provided. The clamping component (6) includes a positioning plate (62) arranged in the mounting groove (61). A displacement column (63) is movably arranged on the positioning plate (62). A clamping buckle (64) is arranged at the end of the displacement column (63). A clamping groove (65) is provided on the connecting block (55). The clamping buckle (64) can be clamped in the clamping groove (65). A wedge block (66) is arranged at one end of the displacement column (63) away from the clamping buckle (64). A first compression spring (67) is also arranged on the outer side of the displacement column (63). Two ends of the first compression spring (67) are respectively connected to the positioning plate (62) and the wedge block (66). An ejecting member (7) is further arranged in the trigger block (15). The ejecting member (7) is used to drive the wedge block (66) to displace, so as to cancel the clamping of the clamping buckle (64) and the clamping groove (65).

6. The multi-angle oblique photogrammetry device for an unmanned aerial vehicle according to claim 5, wherein: Fixing grooves (71) are also arranged on both sides of the trigger block (15). The ejecting member (7) includes ejecting rods (72) respectively movably arranged in the fixing grooves (71). One end of each ejecting rod (72) extends to the outside of the trigger block (15). After the centrifugal force of the trigger block (15) disappears, the ejecting rod (72) will hit the inner wall of the fixing frame (52), so that the ejecting rod (72) drives the adjacent wedge block (66) to displace. Disks (73) are arranged on the ejecting rods (72). Second compression springs (74) are sleeved on the outer sides of the ejecting rods (72). Two ends of the second compression springs (74) are respectively in contact with the disks (73) and the trigger block (15).

7. An omnidirectional tilt photogrammetry device for an unmanned aerial vehicle according to claim 6, characterized in that: The bottom of the mounting frame (2) is circular. The triggering member (8) includes a plurality of connecting springs (81) evenly arranged at the bottom of the mounting frame (2). A displacement ring (82) is arranged on the plurality of connecting springs (81). A trigger switch (83) is arranged on the mounting frame (2). The trigger switch (83) is electrically connected to the wing motor (12).

8. The multi-angle oblique photogrammetry device for an unmanned aerial vehicle according to claim 7, characterized in that: The balancing mechanism (9) includes a universal joint seat (91) arranged in the working chamber (16). A universal shaft (92) is arranged in the universal joint seat (91). A cross frame (93) is arranged in the working chamber (16). A counterweight block (94) is slidably arranged in the cross frame (93). A balancing transmission member (10) is arranged on the cross frame (93). The counterweight block (94) can be driven to displace through the balancing transmission member (10), so as to ensure the balance of the drone. A balancing control member (11) is arranged in the working chamber (16). The balancing control member (11) is used to provide a driving force for the displacement of the counterweight block (94) when the drone tilts to one side.

9. The multi-angle oblique photogrammetry device for an unmanned aerial vehicle according to claim 8, wherein: The balancing transmission member (10) includes a positioning spring (101) arranged at the bottom of the working chamber (16). Two ends of the positioning spring (101) are respectively connected to the working chamber (16) and the counterweight block (94). Fixed magnets (102) are arranged around the counterweight block (94). Electromagnets (103) are arranged around the cross frame (93).

10. The multi-angle oblique photogrammetry device for an unmanned aerial vehicle according to claim 9, wherein: The balance control member (11) includes a plurality of electrode plates (111) disposed at the bottom of the universal shaft (92). The plurality of electrode plates (111) are arranged in two upper and lower layers to avoid interference during rotation. A dielectric plate (112) is further disposed on the inner wall of the working chamber (16). When the dielectric plate (112) contacts the electrode plate (111) that cooperates with it, it can supply power to the electromagnet (103) in the opposite direction of the dielectric plate (112), so that the electromagnet (103) adsorbs the fixed magnet (102), thereby driving the counterweight (94) to shift.

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