Hoisting structure of unmanned aerial vehicle

Abstract

The invention relates to the field of unmanned aerial vehicles, in particular to a hoisting structure of an unmanned aerial vehicle. The hoisting structure of the unmanned aerial vehicle comprises a base frame, a warehouse body is fixed in the base frame, the hoisting structure of the unmanned aerial vehicle further comprises a fixing unit, and the fixing unit comprises a plurality of clamping type fixing mechanisms and adsorption type fixing mechanisms which are symmetrically arranged; the clamping type fixing mechanism comprises a side extrusion assembly, a top extrusion assembly and a driving assembly; the adsorption type fixing mechanism comprises a driving part and a fixing part, the driving part and the fixing part are communicated through an air pipe, the driving part is installed on the driving assembly, the fixing part is installed on the base frame, and the warehouse body is placed on the fixing part. According to the hoisting structure of the unmanned aerial vehicle, the driving assembly can synchronously drive the side extrusion assembly, the top extrusion assembly and the adsorption type fixing mechanism to synchronously move, so that the warehouse main body is more convenient to disassemble and assemble, and meanwhile, the production cost and the use cost of the device are reduced.

Description

Technical Field

[0001] The present invention relates to the field of unmanned aerial vehicles, and in particular to a hoisting structure of an unmanned aerial vehicle. Background Art

[0002] Transport drones are unmanned aerial vehicles used to transport cargo. They play an important role in various scenarios, including military, civilian, emergency rescue, etc.

[0003] China's authorized patent announcement number: CN 118494759 B records "a lifting structure for a cargo drone". The main frame and the supporting mechanism form a frame structure, and the cargo hold body containing the cargo can be placed inside the frame; at the same time, the supporting mechanism includes an air nozzle and a negative pressure drive source, which can fix the cargo hold body by negative pressure adsorption; the side limit mechanism and the top limit mechanism are used to squeeze and fix the cargo hold body to ensure the stability of the cargo during transportation.

[0004] However, there are still the following defects and shortcomings in the application process: When fixing the cargo hold body, the operation process is relatively complicated; at the same time, multiple fixing structures are used in conjunction with multiple driving sources, which increases the production and use costs of the device.

[0005] Therefore, it is necessary to provide a new hoisting structure for an unmanned aerial vehicle to solve the above-mentioned technical problems. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a hoisting structure for a UAV.

[0007] The hoisting structure of the drone provided by the present invention comprises a base frame, a cargo hold body is fixed inside the base frame, and further comprises: A fixing unit, the fixing unit comprising a plurality of sets of symmetrically arranged clamping fixing mechanisms and adsorption fixing mechanisms; The clamping fixing mechanism includes a side extrusion assembly for extruding the side of the cargo bin body, a top extrusion assembly for extruding the top of the cargo bin body, and a driving assembly for driving the side extrusion assembly and the top extrusion assembly to move synchronously; The adsorption-type fixing mechanism includes a driving part and a fixing part for supporting and positioning a cargo hold body, the driving part and the fixing part are connected via an air pipe, the driving part is mounted on a driving assembly, and the fixing part is mounted on a base frame, so that the driving assembly also synchronously drives the adsorption-type fixing mechanism, the cargo hold body is placed on the fixing part, and the cargo hold body is fixed by negative pressure adsorption.

[0008] Preferably, the base frame includes two groups of parallelly arranged cross frames, a mounting frame is welded and fixed to the upper end of the cross frames, and the mounting frame can be bolted to the drone, and a plurality of cross plates are bolted between the two groups of the cross frames, a fixing part is installed on a part of the cross plates, and a pad for supporting the cargo hold body is fixed to the remaining cross plates.

[0009] Preferably, the driving assembly comprises a bottom plate, the bottom plate is bolted to the cross frame, and a first tripod and a second tripod are bolted to the upper end of the bottom plate; The upper end of the first tripod is rotatably connected to a light rod via a rotating shaft, and a first sleeve is slidably mounted on the light rod. A third tripod is welded and fixed to the circumferential outer wall of the first sleeve, and a rotatable hydraulic cylinder is installed between the second tripod and the third tripod. The hydraulic cylinder is retracted to drive the light rod to rotate in a vertical direction, and at the same time, the first sleeve is moved along the axis of the light rod. The third tripod is also rotatably connected to a transmission arm facing obliquely upwards.

[0010] Preferably, a first baffle is integrally welded and fixed to the upper end of the first sleeve, a fourth bracket is welded and fixed to the upper end of the optical rod, a second baffle is welded and fixed to the lower end of the fourth bracket, and a spring is sleeved on the optical rod, with both ends of the spring respectively pressing against the first baffle and the second baffle.

[0011] Preferably, the side extrusion assembly includes a second sleeve, which is sleeved on the light rod and slidably connected thereto, the second sleeve is located below the first sleeve, and a first tightening bolt which is threadedly connected and can tighten the light rod is axially penetrated through the second sleeve, and a fifth bracket is welded to the circumferential outer wall of the second sleeve, and a first positioning frame which can rotate in a vertical direction is fixed to the fifth bracket by a second tightening bolt, and a first extrusion plate for extruding the side of the cargo hold body is bolted to the first positioning frame, and a first rubber block is adhesively fixed to the first extrusion plate.

[0012] Preferably, the top extrusion assembly includes a rotating arm, to which an extension plate is integrally connected near the center, the extension plate is rotatably connected to the fourth leg so that the rotating arm can rotate in a vertical direction, a sixth leg is screwed to one end of the rotating arm, the sixth leg is rotatably connected to the other end of the transmission arm, a second positioning frame rotatable in a vertical direction is fixed to the other end of the rotating arm by a third tightening bolt, a second extrusion plate for extruding the top of the cargo hold body is bolted to the second positioning frame, and a second rubber block is adhesively fixed to the second extrusion plate.

[0013] Preferably, the first rubber block and the second rubber block both have anti-slip grooves on the sides contacting the cargo hold body.

[0014] Preferably, the driving part comprises a cylindrical rod, one end of the cylindrical rod is closed, the other end has an opening, and an air nozzle is installed at the closed end, one end of the air pipe is fixed to the air nozzle, and a piston is slidably connected inside the cylindrical rod, and the piston is fixed to a sliding rod, and the other end of the sliding rod extends along the opening to the outside of the cylindrical rod; A first fixed ring frame and a second fixed ring frame are welded and fixed to the barrel rod and the slide rod respectively. The first fixed ring frame is sleeved and fixed on the cylinder barrel of the hydraulic cylinder, and the second fixed ring frame is sleeved and fixed on the piston rod of the hydraulic cylinder.

[0015] Preferably, the fixing part includes a chassis seat, a support ring seat is fixed to the upper end of the chassis seat, a suction cup that can contact the bottom surface of the cargo hold body is installed inside the support ring seat, the suction cup is connected to the chassis seat, and the other end of the air pipe is connected to the chassis seat.

[0016] Compared with the related art, the UAV hoisting structure provided by the present invention has the following beneficial effects: The driving assembly can synchronously drive the side extrusion assembly, the top extrusion assembly and the adsorption fixing mechanism to move synchronously, so it is more convenient to disassemble and assemble the warehouse body, while reducing the production cost and use cost of the device itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a preferred embodiment of the hoisting structure of the UAV provided by the present invention; Figure 2 It is a structural schematic diagram of the base frame shown in the present invention; Figure 3 It is a structural schematic diagram of the fixing unit shown in the present invention; Figure 4 It is a structural schematic diagram of the driving assembly shown in the present invention; Figure 5 It is a structural schematic diagram of the side extrusion assembly shown in the present invention; Figure 6 It is a structural schematic diagram of the top extrusion assembly shown in the present invention; Figure 7 It is a structural schematic diagram of the first rubber block shown in the present invention; Figure 8 It is a structural schematic diagram of the adsorption type fixing mechanism shown in the present invention.

[0018] Numbers in the figure: 1, base frame; 11, cross frame; 12, mounting frame; 13, cross plate; 14, pad; 2. Warehouse body; 3. Clamping fixing mechanism; 31. driving assembly; 311. bottom plate; 312. first leg; 313. second leg; 314. light rod; 315. first sleeve; 316. third leg; 317. first stop plate; 318. hydraulic cylinder; 319. fourth leg; 3110. second stop plate; 3111. spring; 3112. transmission arm; 32. Side extrusion assembly; 321. Second sleeve; 322. First tightening bolt; 323. Fifth leg; 324. Second tightening bolt; 325. First positioning frame; 326. First extrusion plate; 327. First rubber block; 33. Top extrusion assembly; 331. Rotating arm; 332. Extension plate; 333. Sixth leg; 334. Third tightening bolt; 335. Second positioning frame; 336. Second extrusion plate; 337. Second rubber block; 4. Adsorption type fixing mechanism; 41. Cylinder rod; 42. Sliding rod; 43. Piston; 44. First fixed ring frame; 45. Second fixed ring frame; 46. Air pipe; 47. Chassis seat; 48. Support ring seat; 49. Suction cup. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0021] An embodiment of the present invention provides a hoisting structure for a drone, the hoisting structure for the drone comprising a base frame 1, a cargo hold body 2 is placed on the base frame 1, and a fixing unit for fixing the cargo hold body 2 is also installed; The fixing unit includes a clamping fixing mechanism 3 and an adsorption fixing mechanism 4 .

[0022] For base frame 1; See also Figure 1 and Figure 2 The base frame 1 includes two sets of parallel horizontal frames 11, and a mounting frame 12 is welded and fixed on the upper end of the horizontal frame 11. The mounting frame 12 can be bolted to the drone. A plurality of horizontal plates 13 are bolted between the two sets of horizontal frames 11. A fixing part is installed on a part of the horizontal plates 13, and a pad 14 for supporting the cargo hold body 2 is fixed on the remaining horizontal plates 13.

[0023] It should be noted that: in the base frame 1, the cross frame 11, the mounting frame 12 and the cross plate 13 form a cage frame structure, and the cargo hold body 2 can be placed inside the frame, and the mounting frame 12 can be fixed to the drone by bolts, so that the cargo can be transported by the drone.

[0024] The clamping fixing mechanism 3 includes a driving assembly 31, a side extrusion assembly 32 and a top extrusion assembly 33; For the drive assembly 31; See also Figure 3 and Figure 4 The driving assembly 31 includes a bottom plate 311, the bottom plate 311 is bolted to the cross frame 11, and a first tripod 312 and a second tripod 313 are bolted to the upper end of the bottom plate 311; The upper end of the first tripod 312 is rotatably connected to the light rod 314 through a rotating shaft, and the light rod 314 is provided with a first sleeve 315 in a sliding connection, and a third tripod 316 is welded and fixed to the outer wall of the circumference of the first sleeve 315, and a rotatable hydraulic cylinder 318 is installed between the second tripod 313 and the third tripod 316, and the light rod 314 is driven to rotate in the vertical direction through the extension and contraction of the hydraulic cylinder 318, and the first sleeve 315 is moved along the axial direction of the light rod 314, and the third tripod 316 is also rotatably connected to a transmission arm 3112 facing obliquely upward, and a first baffle 317 is also integrally welded and fixed to the upper end of the first sleeve 315, a fourth tripod 319 is welded and fixed to the upper end of the light rod 314, and a second baffle 3110 is welded and fixed to the lower end of the fourth tripod 319, and a spring 3111 is also sleeved on the light rod 314, and the two ends of the spring 3111 are respectively pressed against the first baffle 317 and the second baffle 3110.

[0025] It should be noted that: in the driving assembly 31, the hydraulic cylinder 318 is the main driving structure. When the hydraulic cylinder 318 is extended, it will generate a force on the first sleeve 315. The first sleeve 315 is installed on the light rod 314. At the same time, it is affected by the elastic force of the spring 3111, so it can push the light rod 314 to rotate in the vertical direction. At the same time, the first sleeve 315 will also move up along the axis direction of the light rod 314. When the hydraulic cylinder 318 contracts, the polished rod 314 and the first sleeve 315 will move in the opposite direction to the starting position.

[0026] For the side extrusion assembly 32; See also Figure 3 and Figure 5The side extrusion assembly 32 includes a second sleeve 321, which is sleeved on the light rod 314 and slidably connected thereto, and the second sleeve 321 is located below the first sleeve 315. A first tightening bolt 322 that is threadedly connected and can tighten the light rod 314 is axially penetrated through the second sleeve 321, and a fifth leg 323 is welded to the circumferential outer wall of the second sleeve 321. A first positioning frame 325 that can rotate in a vertical direction is fixed to the fifth leg 323 through the second tightening bolt 324. A first extrusion plate 326 for extruding the side of the cargo hold body 2 is bolted to the first positioning frame 325, and a first rubber block 327 is bonded and fixed to the first extrusion plate 326.

[0027] It should be noted that when the hydraulic cylinder 318 is extended, the light rod 314 is pushed to rotate toward the position of the cargo hold body 2, thereby driving the entire side extrusion assembly 32 to move toward the position of the cargo hold body 2, so that the first extrusion plate 326 contacts and squeezes the cargo hold body 2, so as to achieve horizontal positioning of the cargo hold body 2; The first extrusion plate 326 itself can be rotated and adjusted, that is, when the second tightening bolt 324 is loosened, the first extrusion plate 326 can be rotated in the vertical direction to adjust the contact effect between the first extrusion plate 326 and the cargo hold body 2 to achieve stable support for the cargo hold body 2.

[0028] For the top extrusion assembly 33; See also Figure 3 and Figure 6 The top extrusion assembly 33 includes a rotating arm 331, and an extension plate 332 is integrally connected to the rotating arm 331 near the center. The extension plate 332 is rotatably connected to the fourth leg 319, so that the rotating arm 331 can rotate in the vertical direction. A sixth leg 333 is screwed to one end of the rotating arm 331, and the sixth leg 333 is rotatably connected to the other end of the transmission arm 3112. The other end of the rotating arm 331 is fixed with a second positioning frame 335 that can rotate in the vertical direction through a third tightening bolt 334. A second extrusion plate 336 for extruding the top of the cargo hold body 2 is bolted to the second positioning frame 335, and a second rubber block 337 is bonded and fixed to the second extrusion plate 336.

[0029] It should be noted that: the extension plate 332 at the middle of the rotating arm 331 is rotatably connected to the fourth leg 319 at the top of the light rod 314, and the first sleeve 315 is connected to one end of the rotating arm 331 through the transmission arm 3112. Therefore, when the first sleeve 315 moves upward, the end of the rotating arm 331 can be lifted up by the transmission arm 3112, so that the transmission arm 3112 rotates in the vertical direction, so that the second extrusion plate 336 at the other end can contact the top of the cargo hold body 2 and extrudes it, so as to realize the vertical positioning of the cargo hold body 2; It should also be noted that the side extrusion assembly 32 and the top extrusion assembly 33 fix the cargo hold body 2 in three ways: the side extrusion assembly 32 first contacts the cargo hold body 2 and completes the extrusion, the top extrusion assembly 33 first contacts the cargo hold body 2 and completes the extrusion, and the top extrusion assembly 33 contacts the cargo hold body 2 and completes the extrusion simultaneously; In the case where the side extrusion assembly 32 first contacts the cargo hold body 2 and completes the extrusion, the light rod 314 is restricted by the side extrusion assembly 32 in the reverse direction, so it cannot continue to rotate; however, the first sleeve 315 can still move, so the hydraulic cylinder 318 can continue to extend to push the first sleeve 315 to move, thereby driving the rotating arm 331 to continue to rotate until the top extrusion assembly 33 completes the extrusion positioning of the cargo hold body 2; The top extrusion assembly 33 first contacts the cargo hold body 2 and completes the extrusion. At this time, the light rod 314 can rotate, while the first sleeve 315 is restricted by the rotating arm 331 and the transmission arm 3112 and cannot move. Therefore, the hydraulic cylinder 318 can still extend normally until the side extrusion assembly 32 completes the extrusion positioning of the cargo hold body 2. When the two are in synchronous contact, the cargo hold body 2 can be squeezed and positioned more directly.

[0030] The adsorption type fixing mechanism 4 includes a driving part and a fixing part, and the driving part and the fixing part are connected through an air pipe 46; For the driving part and the fixed part; See also Figure 3 and Figure 8 The driving part includes a cylindrical rod 41, one end of the cylindrical rod 41 is closed, the other end has an opening, and an air nozzle is installed at the closed end, one end of the air pipe 46 is fixed to the air nozzle, and a piston 43 is slidably connected inside the cylindrical rod 41, and the piston 43 is fixed to the slide rod 42, and the other end of the slide rod 42 extends along the opening to the outside of the cylindrical rod 41; A first fixed ring frame 44 and a second fixed ring frame 45 are welded and fixed to the cylinder rod 41 and the slide rod 42, respectively. The first fixed ring frame 44 is sleeved and fixed to the cylinder barrel of the hydraulic cylinder 318, and the second fixed ring frame 45 is sleeved and fixed to the piston rod of the hydraulic cylinder 318. The fixing part includes a chassis seat 47, a support ring seat 48 is fixed to the upper end of the chassis seat 47, a suction cup 49 that can contact the bottom surface of the cargo hold body 2 is installed inside the support ring seat 48, the suction cup 49 is connected to the chassis seat 47, and the other end of the air pipe 46 is connected to the chassis seat 47.

[0031] It should be noted that: when the hydraulic cylinder 318 extends to drive the side extrusion assembly 32 and the top extrusion assembly 33 to fix the cargo hold body 2, it can directly drive the slide rod 42 to move, and then drive the piston 43 to move. At this time, it is in a vacuum state, so that a negative pressure is formed inside the cylinder rod 41; the cylinder rod 41 is connected to the chassis seat 47 through the air pipe 46, and the chassis seat 47 is connected to the suction cup 49, thereby forming a negative pressure at the suction cup 49; after completing the initial placement of the cargo hold body 2, the suction cup 49 is attached to the lower end surface of the cargo hold body 2, so that the cargo hold body 2 can be adsorbed and fixed through the lower suction cup 49.

[0032] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hoisting structure for an unmanned aerial vehicle, comprising a base frame (1), wherein a cargo hold body (2) is fixed inside the base frame (1), characterized in that: Also includes: A fixing unit, the fixing unit comprising a plurality of sets of symmetrically arranged clamping-type fixing mechanisms (3) and adsorption-type fixing mechanisms (4); The clamping fixing mechanism (3) comprises a side extrusion assembly (32) for extruding the side of the cargo bin body (2), a top extrusion assembly (33) for extruding the top of the cargo bin body (2), and a driving assembly (31) for driving the side extrusion assembly (32) and the top extrusion assembly (33) to move synchronously; The adsorption-type fixing mechanism (4) comprises a driving part and a fixing part for supporting and positioning the cargo hold body (2); the driving part and the fixing part are connected via an air pipe (46); the driving part is mounted on a driving component (31); and the fixing part is mounted on a base frame (1), so that the driving component (31) also synchronously drives the adsorption-type fixing mechanism (4); the cargo hold body (2) is placed on the fixing part, and the cargo hold body (2) is fixed by negative pressure adsorption.

2. The UAV hoisting structure according to claim 1, characterized in that: The base frame (1) comprises two groups of parallel horizontal frames (11), the upper ends of the horizontal frames (11) are welded with mounting frames (12), the mounting frames (12) can be bolted to the drone, and a plurality of horizontal plates (13) are bolted between the two groups of horizontal frames (11), a fixing portion is installed on a part of the horizontal plates (13), and a pad (14) supporting the cargo hold body (2) is fixed on the remaining horizontal plates (13).

3. The UAV hoisting structure according to claim 1, characterized in that: The driving assembly (31) comprises a bottom plate (311), the bottom plate (311) is bolted to the cross frame (11), and a first tripod (312) and a second tripod (313) are bolted to the upper end of the bottom plate (311); The upper end of the first leg (312) is rotatably connected to a polished rod (314) via a rotating shaft, a first sleeve (315) is sleeved on the polished rod (314) in a sliding connection, a third leg (316) is welded and fixed to the circumferential outer wall of the first sleeve (315), and a rotatable hydraulic cylinder (318) is installed between the second leg (313) and the third leg (316), the polished rod (314) is driven to rotate in a vertical direction by the extension and retraction of the hydraulic cylinder (318), and the first sleeve (315) is moved along the axis direction of the polished rod (314), and a transmission arm (3112) facing obliquely upward is also rotatably connected to the third leg (316).

4. The UAV hoisting structure according to claim 3, characterized in that: A first baffle (317) is integrally welded and fixed to the upper end of the first sleeve (315), a fourth leg (319) is welded and fixed to the upper end of the optical rod (314), and a second baffle (3110) is welded and fixed to the lower end of the fourth leg (319). A spring (3111) is sleeved on the optical rod (314), and two ends of the spring (3111) respectively press against the first baffle (317) and the second baffle (3110).

5. The UAV hoisting structure according to claim 1, characterized in that: The side extrusion assembly (32) comprises a second sleeve (321), the second sleeve (321) being sleeved on the polished rod (314) and slidably connected thereto, the second sleeve (321) being located below the first sleeve (315), a first tightening bolt (322) being threadedly connected and capable of pressing against the polished rod (314) being axially penetrated through the second sleeve (321), a fifth leg (323) being welded to the circumferential outer wall of the second sleeve (321), a first positioning frame (325) being rotatable in a vertical direction being fixed to the fifth leg (323) by means of a second tightening bolt (324), a first extrusion plate (326) for extruding the side of the cargo hold body (2) being bolted to the first positioning frame (325), and a first rubber block (327) being adhesively fixed to the first extrusion plate (326).

6. The UAV hoisting structure according to claim 1, characterized in that: The top extrusion assembly (33) comprises a rotating arm (331), an extension plate (332) being integrally connected to a position near the center of the rotating arm (331), the extension plate (332) being rotatably connected to a fourth leg (319) so that the rotating arm (331) can rotate in a vertical direction, a sixth leg (333) being screwed to one end of the rotating arm (331), the sixth leg (333) being rotatably connected to the other end of the transmission arm (3112), a second positioning frame (335) being rotatable in a vertical direction being fixed to the other end of the rotating arm (331) via a third tightening bolt (334), a second extrusion plate (336) for extruding the top of the cargo hold body (2) being bolted to the second positioning frame (335), and a second rubber block (337) being adhesively fixed to the second extrusion plate (336).

7. The UAV hoisting structure according to claim 5, characterized in that: The first rubber block (327) and the second rubber block (337) both have anti-slip grooves on the sides that contact the cargo hold body (2).

8. The UAV hoisting structure according to claim 1, characterized in that: The driving part comprises a cylindrical rod (41), one end of the cylindrical rod (41) is closed, the other end has an opening, and an air nozzle is installed on the closed end, one end of the air pipe (46) is fixed to the air nozzle, and a piston (43) is slidably connected inside the cylindrical rod (41), and the piston (43) is fixed to a sliding rod (42), and the other end of the sliding rod (42) extends along the opening to the outside of the cylindrical rod (41); A first fixed ring frame (44) and a second fixed ring frame (45) are respectively welded and fixed to the barrel rod (41) and the slide rod (42); the first fixed ring frame (44) is sleeved and fixed on the cylinder barrel of the hydraulic cylinder (318), and the second fixed ring frame (45) is sleeved and fixed on the piston rod of the hydraulic cylinder (318).

9. The UAV hoisting structure according to claim 1, characterized in that: The fixing portion comprises a chassis seat (47), a support ring seat (48) being fixed to the upper end of the chassis seat (47), a suction cup (49) being installed inside the support ring seat (48) and being capable of contacting the bottom surface of the cargo hold body (2), the suction cup (49) being connected to the chassis seat (47), and the other end of the air pipe (46) being connected to the chassis seat (47).

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