A large-load throwing device for unmanned aerial vehicle

Abstract

The invention discloses a large-load throwing device for unmanned aerial vehicles, which relates to the technical field of unmanned aerial vehicles, and comprises an unmanned aerial vehicle main body, a control unit and a throwing object, wherein rotors are fixedly installed around the unmanned aerial vehicle main body, a load box is installed below the unmanned aerial vehicle main body, and a support frame is symmetrically fixed to the bottom of the unmanned aerial vehicle main body; the device also comprises: an adjustment component, which is arranged on the top of the load box, and a throwing component is arranged inside the load box; the adjustment component comprises symmetrically arranged fixing rods, fixing plates are symmetrically fixed on the top of the load box, and the lower parts of the two fixing rods are rotatably connected with cross bars; the throwing component comprises symmetrically arranged box doors, and an electric push rod is symmetrically installed on one side of the interior of the load box, which solves the problem that the throwing angle of the device is single and is only convenient for vertical downward throwing. Under special circumstances, vertical throwing is relatively inconvenient, which will affect the throwing effect of the unmanned aerial vehicle and has limitations.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicles, and in particular to a large-load throwing device for unmanned aerial vehicles. Background Art

[0002] In drone dropping, the current mainstream is that drones carry various dropping materials, cross various complex terrains and harsh environments, and open the drop box to drop materials at low altitude after arriving at the dropping location, which greatly improves the operation efficiency and safety.

[0003] For example, a large-load UAV rescue throwing structure with a publication number of CN218751386U comprises a loading box arranged at the lower end of the large-load UAV body, the loading box is connected and fixed to the large-load UAV body through a plurality of suspension rods, a loading cavity is arranged inside the loading box, a plurality of drop openings are arranged in an array at the lower end of the loading cavity, and an auxiliary positioning plate for limiting the position of the fire extinguishing ball is arranged inside the loading cavity where each drop opening is located, and a plurality of blocking mechanisms for blocking the drop openings are arranged at the lower end of the loading box; the design is made for the drawback that the existing device can only be thrown once, and multiple throwing operations on a single route are realized, which can meet the throwing of multiple points of the rescue operation, improve the fire extinguishing and rescue effect, and has strong practicality. However, the throwing angle of the device is single, which is only convenient for vertical downward throwing. When dealing with fire rescue, the molecular movement in the air is accelerated due to the excessive fire, and the interval between the molecules becomes larger, which eventually leads to a decrease in the density of the air, making it inconvenient for the UAV to stop steadily. At this time, vertical throwing is relatively inconvenient, which will affect the throwing effect and has limitations when used.

[0004] Therefore, we propose a large-load throwing device for UAV to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a large-load throwing device for unmanned aerial vehicles to solve the problem that the throwing angle of the device is single and it is only convenient for throwing vertically downward. Under special circumstances, vertical throwing is inconvenient, which will affect the throwing effect of the unmanned aerial vehicle and has limitations.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a large-load throwing device for unmanned aerial vehicles, comprising an unmanned aerial vehicle body, a control unit and a throwing object, wherein rotors are fixedly installed around the unmanned aerial vehicle body, a load box is installed below the unmanned aerial vehicle body, and a support frame is symmetrically fixed at the bottom of the unmanned aerial vehicle body;

[0007] Also includes:

[0008] An adjustment component is arranged on the top of the load box, a throwing component is arranged inside the load box, a camera is fixedly installed on one side of the bottom of the drone body, a spring 2 is connected between the load box and the drone body, and a blocking plate is fixedly connected to the bottom of the drone body;

[0009] The adjustment assembly includes symmetrically arranged fixing rods, a fixing plate is symmetrically fixed on the top of the load box, a cross bar is rotatably connected to the lower part of the two fixing rods, the fixing plate is fixedly connected to the cross bar, a slave gear is fixedly connected to the middle part of the cross bar, a mounting plate is symmetrically fixed to the bottom of the drone body, a servo motor is fixedly installed on the inner side of one side of the mounting plate, and a rotating shaft is fixedly connected to the output end of the servo motor;

[0010] The outer side of the rotating shaft is sleeved with a main gear, the outer side of the rotating shaft is fixedly connected with a limit bar, the main gear is slidably connected to the limit bar, the end of the rotating shaft away from the servo motor is fixedly connected with a lead screw, the outer side of the lead screw is sleeved with a threaded sleeve, the side of the main gear close to the threaded sleeve is fixedly connected with a rotating rod, the side of the threaded sleeve close to the main gear is provided with a rotating groove, and the rotating rod is slidably connected to the rotating groove;

[0011] The threaded sleeve is fixedly connected to an abutment block on one side away from the main gear, the outer side of the cross bar is fixedly connected to an auxiliary block, the interior of the auxiliary block is slidably connected to a sliding rod, the top of the sliding rod is fixedly connected to an abutment rod, and one side of the abutment rod is connected to a spring 1;

[0012] The throwing assembly includes a symmetrically arranged box door, which is fitted with a load box. An electric push rod is symmetrically installed on one side of the interior of the load box, and the output end of the electric push rod is fixedly connected to the box door. A linear guide rail is fixedly installed inside the load box, and a pushing block is fixedly connected to the output end of the linear guide rail.

[0013] Preferably, the top of the fixing rod is fixedly connected to the bottom of the drone body, the limiting strips are symmetrically arranged up and down, and one end of the screw rod is rotatably connected to the mounting plate on the other side.

[0014] By adopting the above technical solution, an adjustment component is provided, and when the sliding rod is completely disengaged from the auxiliary block, the main gear and the slave gear begin to contact and engage, and the limit of the auxiliary block and the cross bar is released. The main gear rotates again to drive the slave gear to rotate, and the rotation of the slave gear drives the cross bar and the fixed plate to rotate, and the fixed plate drives the load box to rotate, so that the load box can adjust the casting angle to adapt to casting in different situations, thereby improving the convenience of use.

[0015] Preferably, the top of the threaded sleeve is fixedly connected to a limiting block, the bottom of the drone body is provided with a limiting groove, the limiting block is located inside the limiting groove, and the limiting block is slidably connected to the limiting groove.

[0016] By adopting the above technical solution, the rotating shaft drives the main gear to rotate, and the limiting block limits the threaded sleeve without affecting the sliding of the main gear.

[0017] Preferably, the rotating groove is a step groove, the rotating groove is arranged in an annular shape, an anti-slip block is fixed to one end of the rotating rod, and the anti-slip block is located inside the rotating groove.

[0018] By adopting the above technical solution, the threaded sleeve drives the main gear to move through the rotating rod, so that the main gear can be moved and rotated normally.

[0019] Preferably, the abutment block is arranged in an annular shape, a sliding groove is provided inside the fixing rod on one side, the sliding rod is slidably connected to the sliding groove, and the abutment rod abuts against the abutment block.

[0020] By adopting the above technical solution, the threaded sleeve drives the abutment block to squeeze the abutment rod, and the abutment rod drives the sliding rod to slide out of the auxiliary block. The abutment rod compresses spring 1. When the sliding rod is completely disengaged from the auxiliary block, the main gear and the slave gear begin to contact and engage, releasing the limit of the auxiliary block and the cross bar, which is convenient for the subsequent angular rotation adjustment of the load box.

[0021] Preferably, one side of the thrown object is connected to an adsorption plate, the inner bottom surface of the load box is fixedly connected to a mounting block, the mounting block is adsorbed to the adsorption plate, and one side of the adsorption plate is connected to a collar.

[0022] By adopting the above technical solution, the thrown object is adsorbed by the adsorption plate and the mounting block, and is fixed by hooking the ring through the hook.

[0023] Preferably, a hook is installed on one side of the mounting block, the hook is rotatably connected to the mounting block, and the ring is adaptively connected to the hook.

[0024] By adopting the above technical solution, the linear guide rail drives the push block to move linearly. When the push block moves to the position of the hook, the push block pushes the hook, and the hook rotates and releases the connection with the ring.

[0025] Preferably, the mounting blocks are evenly arranged, a plurality of the mounting blocks are arranged at equal distances, and the number of the mounting blocks is no less than three.

[0026] By adopting the above technical solution, multiple installation blocks are provided to facilitate auxiliary fixation of multiple projectiles.

[0027] Preferably, an inclined block is symmetrically fixed on the inner side of the load box, the inclined block is located between the electric push rod and the thrown object, and a guide wheel is installed on the side of the inclined block close to the thrown object, and the guide wheels are evenly arranged at equal distances.

[0028] By adopting the above technical solution, the inclined block and the guide wheel thereon assist the sliding of the projectile and play a guiding role.

[0029] Compared with the prior art, the present invention has the following beneficial effects: an adjustment assembly is provided, when the sliding rod is completely disengaged from the auxiliary block, the main gear and the slave gear begin to contact and mesh, the position limit of the auxiliary block and the crossbar is released, the main gear rotates again to drive the slave gear to rotate, the slave gear rotates to drive the crossbar and the fixed plate to rotate, the fixed plate drives the load box to rotate, so that the load box can adjust the casting angle to adapt to casting in different situations, and the convenience of use is improved;

[0030] 1. An adjustment component is provided. The operator controls the main body of the drone to fly to the casting position through the control device. By starting the servo motor, the servo motor drives the rotating shaft and the screw rod to rotate, the rotating shaft drives the main gear to rotate, the limit block limits the threaded sleeve, and does not affect the sliding of the main gear. The screw rod rotates to make the threaded sleeve move left, and the threaded sleeve drives the main gear to move through the rotating rod. The threaded sleeve drives the abutment block to squeeze the abutment rod, and the abutment rod drives the sliding rod to slide out of the auxiliary block. The abutment rod compresses the spring. When the sliding rod is completely disengaged from the auxiliary block, the main gear begins to contact and mesh with the slave gear, releasing the limit of the auxiliary block and the crossbar. When the servo motor continues to rotate, the main gear will drive the slave gear to rotate, and the threaded sleeve will continue to move a short distance without affecting the meshing of the main gear and the slave gear. The rotation of the slave gear will drive the crossbar and the fixed plate to rotate, and the fixed plate will drive the load box to rotate. The load box rotates and compresses the spring 2. The blocking plate is used to block the limit when the load box is reset, so that the load box can adjust the casting angle to adapt to casting in different situations, improve the convenience of use, solve the problem of single casting angle of the device, which is only convenient for vertical downward casting. In special circumstances, vertical casting is inconvenient, which will affect the casting effect of the drone and has limitations.

[0031] 2. A throwing assembly is provided. The thrown object is adsorbed by the adsorption plate and the mounting block, and is fixed by hooking the ring. After adjusting the angle, the electric push rods on both sides are started, and the electric push rods are contracted to drive the two box doors to open, and the linear guide rail is started. The linear guide rail drives the pushing block to move in a straight line. When the pushing block moves to the position of the hook, the pushing block pushes the hook, and the hook rotates and releases the connection with the ring. The thrown object tilts due to its own weight, so that the adsorption plate and the mounting block are separated, and the thrown object slides outward. The inclined block and the guide wheel thereon assist the sliding of the thrown object, so that the thrown object slides out of the load box to complete the throwing operation, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the first three-dimensional overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of a second three-dimensional overall structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the cross-sectional structure of the main body of the UAV of the present invention;

[0035] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0036] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0037] Figure 6 It is a schematic diagram of the cross-sectional structure of the fixing rod and the mounting plate of the present invention;

[0038] Figure 7 For the present invention Figure 6 The enlarged structural diagram at C in the middle;

[0039] Figure 8 This is a schematic diagram of the movement of the main gear of the present invention;

[0040] Fig. 9 It is a cross-sectional structural schematic diagram of the load box of the present invention;

[0041] Fig.10 For the present invention Fig. 9 The enlarged structural diagram at D in the middle;

[0042] Fig.11 It is a schematic diagram of the hook installation structure of the present invention.

[0043] In the figure: 1, drone body; 2, control unit; 3, rotor; 4, load box; 5, adjustment assembly; 51, fixing rod; 52, fixing plate; 53, cross bar; 54, slave gear; 55, mounting plate; 56, servo motor; 57, rotating shaft; 58, main gear; 59, limit strip; 510, screw rod; 511, threaded sleeve; 512, limit block; 513, limit slot; 514, rotating rod; 515, rotating slot; 51 6. Abutment block; 517. Auxiliary block; 518. Sliding rod; 519. Slide groove; 520. Abutment rod; 521. Spring one; 6. Throwing assembly; 61. Box door; 62. Electric push rod; 63. Oblique block; 64. Linear guide; 65. Push block; 66. Adsorption plate; 67. Mounting block; 68. Hook; 69. Ring; 7. Support frame; 8. Camera; 9. Spring two; 10. Blocking plate; 11. Throwing object. DETAILED DESCRIPTION

[0044] 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.

[0045] See also Figure 1-11 The present invention provides a technical solution: a large-load throwing device for a drone, comprising a drone body 1, a control unit 2 and a throwing object 11, a rotor 3 is fixedly installed around the drone body 1, a load box 4 is installed below the drone body 1, and a support frame 7 is symmetrically fixed at the bottom of the drone body 1;

[0046] The adjustment component 5 is arranged on the top of the load box 4, a camera 8 is fixedly installed on one side of the bottom of the drone body 1, a spring 9 is connected between the load box 4 and the drone body 1, and a blocking plate 10 is fixedly connected to the bottom of the drone body 1;

[0047] The adjustment assembly 5 includes symmetrically arranged fixing rods 51, a fixing plate 52 is symmetrically fixed to the top of the load box 4, a cross bar 53 is rotatably connected to the lower part of the two fixing rods 51, the fixing plate 52 is fixedly connected to the cross bar 53, a slave gear 54 is fixedly connected to the middle part of the cross bar 53, a mounting plate 55 is symmetrically fixed to the bottom of the drone body 1, a servo motor 56 is fixedly installed on the inner side of one side mounting plate 55, the model of the servo motor 56 can be selected from AKM1, and a rotating shaft 57 is fixedly connected to the output end of the servo motor 56;

[0048] A main gear 58 is sleeved on the outer side of the rotating shaft 57, and a limit bar 59 is fixedly connected to the outer side of the rotating shaft 57. The main gear 58 is slidably connected to the limit bar 59. A screw rod 510 is fixedly connected to the end of the rotating shaft 57 away from the servo motor 56. A threaded sleeve 511 is sleeved on the outer side of the screw rod 510. A rotating rod 514 is fixedly connected to the side of the main gear 58 close to the threaded sleeve 511. A rotating groove 515 is opened on the side of the threaded sleeve 511 close to the main gear 58, and the rotating rod 514 is slidably connected to the rotating groove 515.

[0049] The top of the fixing rod 51 is fixedly connected to the bottom of the drone body 1 , the limiting strips 59 are symmetrically arranged up and down, and one end of the screw rod 510 is rotatably connected to the mounting plate 55 on the other side.

[0050] The top of the threaded sleeve 511 is fixedly connected to the limiting block 512, and the bottom of the drone body 1 is provided with a limiting groove 513, the limiting block 512 is located inside the limiting groove 513, the limiting block 512 is slidably connected to the limiting groove 513, the rotating groove 515 is a step groove, the rotating groove 515 is annularly arranged, and an anti-slip block is fixed to one end of the rotating rod 514, and the anti-slip block is located inside the rotating groove 515.

[0051] The side of the threaded sleeve 511 away from the main gear 58 is fixedly connected with an abutment block 516, the outer side of the cross bar 53 is fixedly connected with an auxiliary block 517, the inner side of the auxiliary block 517 is slidably connected with a sliding rod 518, the top of the sliding rod 518 is fixedly connected with an abutment rod 520, and one side of the abutment rod 520 is connected to a spring 521.

[0052] The abutment block 516 is arranged in an annular shape. A sliding groove 519 is provided inside the fixed rod 51 on one side. The sliding rod 518 is slidably connected to the sliding groove 519 , and the abutment rod 520 abuts against the abutment block 516 .

[0053] Embodiment 1: Figure 1-8 As shown, an adjustment component 5 is provided. The operator controls the drone body 1 to fly to the casting position through the control device, and starts the servo motor 56. The servo motor 56 drives the rotating shaft 57 and the screw rod 510 to rotate, and the rotating shaft 57 drives the main gear 58 to rotate. The limit block 512 limits the threaded sleeve 511 without affecting the sliding of the main gear 58. The screw rod 510 rotates to make the threaded sleeve 511 move to the left, and the threaded sleeve 511 drives the main gear 58 to move through the rotating rod 514. The threaded sleeve 511 drives the abutment block 516 to squeeze the abutment rod 520, and the abutment rod 520 drives the sliding rod 518 to slide out of the auxiliary block 517, and the abutment rod 520 compresses the spring 1 521.

[0054] When the sliding rod 518 is completely disengaged from the auxiliary block 517, the main gear 58 begins to contact and engage with the slave gear 54, releasing the limit of the auxiliary block 517 and the cross bar 53. At this time, the servo motor 56 continues to rotate, the main gear 58 drives the slave gear 54 to rotate, and the threaded sleeve 511 continues to move a short distance without affecting the engagement of the main gear 58 and the slave gear 54.

[0055] The rotation of the gear 54 will drive the cross bar 53 and the fixed plate 52 to rotate, and the fixed plate 52 will drive the load box 4 to rotate. The rotation of the load box 4 compresses the spring 29, and the blocking plate 10 is used to block and limit the load box 4 when it is reset, so that the load box 4 can adjust the casting angle to adapt to casting in different situations, improve the convenience of use, and solve the problem of the device having a single casting angle, which is only convenient for vertical downward casting. Under special circumstances, vertical casting is inconvenient and will affect the casting effect of the drone, and there are limitations.

[0056] A throwing assembly 6 is arranged inside the load box 4, and the throwing assembly 6 includes a symmetrically arranged box door 61, which fits the load box 4. An electric push rod 62 is symmetrically installed on one side of the inside of the load box 4. The model of the electric push rod 62 can be YMD-606. The output end of the electric push rod 62 is fixedly connected to the box door 61. A linear guide rail 64 is fixedly installed inside the load box 4, and a pushing block 65 is fixedly connected to the output end of the linear guide rail 64.

[0057] One side of the thrown object 11 is connected to an adsorption plate 66 , and the inner bottom surface of the load box 4 is fixedly connected to a mounting block 67 , the mounting block 67 is adsorbed to the adsorption plate 66 , and one side of the adsorption plate 66 is connected to a collar 69 .

[0058] A hook 68 is installed on one side of the mounting block 67 . The mounting block 67 and the adsorption plate 66 may use magnets. The hook 68 is rotatably connected to the mounting block 67 , and the ring 69 is adaptably connected to the hook 68 .

[0059] The mounting blocks 67 are evenly arranged, and there are multiple mounting blocks 67 arranged at equal distances, and there are no less than three mounting blocks 67. The inner side of the load box 4 is symmetrically fixed with inclined blocks 63, and the inclined blocks 63 are located between the electric push rod 62 and the thrown object 11. A guide wheel is installed on the side of the inclined block 63 close to the thrown object 11, and the guide wheels are evenly arranged at equal distances.

[0060] Embodiment 2: Figure 9-11 As shown, a throwing assembly 6 is provided, and the throwing object 11 is adsorbed by the adsorption plate 66 and the mounting block 67, and is fixed by hooking the ring 69 with the hook 68. After adjusting the angle, by starting the electric push rods 62 on both sides, the electric push rods 62 shrink and drive the two box doors 61 to open, and start the linear guide 64. The linear guide 64 drives the pushing block 65 to move in a straight line. When the pushing block 65 moves to the position of the hook 68, the pushing block 65 pushes the hook 68, and the hook 68 rotates and releases the connection with the ring 69. The throwing object 11 tilts due to its own weight, so that the adsorption plate 66 is separated from the mounting block 67, and the throwing object 11 slides outward. The inclined block 63 and the guide wheel thereon assist the sliding of the throwing object 11, so that the throwing object 11 slides out of the load box 4 to complete the throwing operation, which is more convenient to use.

[0061] Working principle: When using the device, first, Figure 1-11 As shown, the operator controls the drone body 1 to fly to the casting position through the control device, and starts the servo motor 56. The servo motor 56 drives the rotating shaft 57 and the screw rod 510 to rotate, and the rotating shaft 57 drives the main gear 58 to rotate. The limit block 512 limits the threaded sleeve 511 without affecting the sliding of the main gear 58. The screw rod 510 rotates to make the threaded sleeve 511 move to the left, and the threaded sleeve 511 drives the main gear 58 to move through the rotating rod 514. The threaded sleeve 511 drives the abutment block 516 to squeeze the abutment rod 520, and the abutment rod 520 drives the sliding rod 518 to slide out of the auxiliary block 517, and the abutment rod 520 compresses the spring 1 521.

[0062] When the sliding rod 518 is completely disengaged from the auxiliary block 517, the main gear 58 and the slave gear 54 begin to contact and engage, releasing the limit of the auxiliary block 517 and the cross bar 53. At this time, the servo motor 56 continues to rotate, and the main gear 58 will drive the slave gear 54 to rotate. The threaded sleeve 511 continues to move a short distance without affecting the engagement of the main gear 58 and the slave gear 54. The rotation of the slave gear 54 will drive the cross bar 53 and the fixed plate 52 to rotate, and the fixed plate 52 will drive the load box 4 to rotate. The rotation of the load box 4 compresses the spring 29, and the blocking plate 10 is used to block the limit when the load box 4 is reset, thereby realizing the adjustment of the casting angle of the load box 4.

[0063] After adjusting the angle, by starting the electric push rods 62 on both sides, the electric push rods 62 shrink and drive the two box doors 61 to open, and start the linear guide 64. The linear guide 64 drives the pushing block 65 to move in a straight line. When the pushing block 65 moves to the position of the hook 68, the pushing block 65 pushes the hook 68, and the hook 68 rotates and releases the connection with the ring 69. The parachuted object 11 tilts and its own weight causes the adsorption plate 66 to separate from the mounting block 67, and the parachuted object 11 slides outward. The inclined block 63 and the guide wheel thereon assist the sliding of the parachuted object 11, so that the parachuted object 11 slides out of the load box 4 to complete the throwing operation.

[0064] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0065] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large-load throwing device for an unmanned aerial vehicle, comprising an unmanned aerial vehicle body (1), a control unit (2) and a throwing object (11), wherein rotors (3) are fixedly mounted around the unmanned aerial vehicle body (1), a load box (4) is mounted below the unmanned aerial vehicle body (1), and a support frame (7) is symmetrically fixed at the bottom of the unmanned aerial vehicle body (1); It is characterized in that Also includes: An adjustment component (5) is arranged on the top of the load box (4), a throwing component (6) is arranged inside the load box (4), a camera (8) is fixedly installed on one side of the bottom of the drone body (1), a spring (9) is connected between the load box (4) and the drone body (1), and a blocking plate (10) is fixedly connected to the bottom of the drone body (1); The adjustment assembly (5) comprises symmetrically arranged fixing rods (51), a fixing plate (52) is symmetrically fixed on the top of the load box (4), a cross bar (53) is rotatably connected to the lower parts of the two fixing rods (51), the fixing plate (52) is fixedly connected to the cross bar (53), a slave gear (54) is fixedly connected to the middle part of the cross bar (53), a mounting plate (55) is symmetrically fixed to the bottom of the drone body (1), a servo motor (56) is fixedly installed on the inner side of one side of the mounting plate (55), and a rotating shaft (57) is fixedly connected to the output end of the servo motor (56); The outer side of the rotating shaft (57) is sleeved with a main gear (58), the outer side of the rotating shaft (57) is fixedly connected to a limit bar (59), the main gear (58) is slidably connected to the limit bar (59), the end of the rotating shaft (57) away from the servo motor (56) is fixedly connected to a screw rod (510), the outer side of the screw rod (510) is sleeved with a threaded sleeve (511), the side of the main gear (58) close to the threaded sleeve (511) is fixedly connected to a rotating rod (514), the side of the threaded sleeve (511) close to the main gear (58) is provided with a rotating groove (515), and the rotating rod (514) is slidably connected to the rotating groove (515); A contact block (516) is fixedly connected to the side of the threaded sleeve (511) away from the main gear (58), an auxiliary block (517) is fixedly connected to the outside of the cross bar (53), a sliding rod (518) is slidably connected to the inside of the auxiliary block (517), an abutment rod (520) is fixedly connected to the top of the sliding rod (518), and a spring 1 (521) is connected to one side of the abutment rod (520); The throwing assembly (6) comprises a symmetrically arranged box door (61), the box door (61) being fitted with the load box (4), an electric push rod (62) being symmetrically mounted on one side of the interior of the load box (4), an output end of the electric push rod (62) being fixedly connected to the box door (61), a linear guide rail (64) being fixedly mounted inside the load box (4), and a push block (65) being fixedly connected to the output end of the linear guide rail (64).

2. The large-load throwing device for unmanned aerial vehicles according to claim 1, characterized in that: The top of the fixing rod (51) is fixedly connected to the bottom of the drone body (1), the limiting strips (59) are symmetrically arranged up and down, and one end of the screw rod (510) is rotatably connected to the mounting plate (55) on the other side.

3. The large-load throwing device for unmanned aerial vehicles according to claim 1, characterized in that: The top of the threaded sleeve (511) is fixedly connected to a limiting block (512); the bottom of the drone body (1) is provided with a limiting groove (513); the limiting block (512) is located inside the limiting groove (513); and the limiting block (512) is slidably connected to the limiting groove (513).

4. The large-load throwing device for unmanned aerial vehicles according to claim 1, characterized in that: The rotating groove (515) is a step groove, and the rotating groove (515) is arranged in an annular shape. An anti-slip block is fixed to one end of the rotating rod (514), and the anti-slip block is located inside the rotating groove (515).

5. The large-load throwing device for unmanned aerial vehicles according to claim 1, characterized in that: The abutment block (516) is arranged in an annular shape, a sliding groove (519) is provided inside the fixed rod (51) on one side, the sliding rod (518) is slidably connected to the sliding groove (519), and the abutment rod (520) abuts against the abutment block (516).

6. The large-load throwing device for unmanned aerial vehicles according to claim 1, characterized in that: One side of the thrown object (11) is connected to an adsorption plate (66), the inner bottom surface of the load box (4) is fixedly connected to a mounting block (67), the mounting block (67) is adsorbed on the adsorption plate (66), and one side of the adsorption plate (66) is connected to a collar (69).

7. The large-load throwing device for unmanned aerial vehicles according to claim 6, characterized in that: A hook (68) is installed on one side of the installation block (67), the hook (68) is rotatably connected to the installation block (67), and the ring (69) is adaptively connected to the hook (68).

8. The large-load throwing device for unmanned aerial vehicles according to claim 7, characterized in that: The installation blocks (67) are evenly arranged, a plurality of the installation blocks (67) are arranged at equal distances, and the number of the installation blocks (67) is no less than three.

9. The large-load throwing device for unmanned aerial vehicles according to claim 1, characterized in that: An inclined block (63) is symmetrically fixed on the inner side of the load box (4), and the inclined block (63) is located between the electric push rod (62) and the thrown object (11). A guide wheel is installed on the side of the inclined block (63) close to the thrown object (11), and the guide wheels are evenly arranged at equal distances.

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