A loading device suitable for loading unmanned aerial vehicle payloads

Abstract

The present invention provides a loading device suitable for loading unmanned aerial vehicle payloads. The device can load the payload from the bottom of the unmanned aerial vehicle, ensuring a reliable and efficient loading process. The loading device comprises a base, a traveling unit mounted on the base and capable of longitudinal translation along the base, and an adaptive loading unit mounted on the traveling unit and capable of rising and falling under the drive of the traveling unit. The adaptive loading unit is used to load the payload and is capable of adaptively centering the payload and adjusting its roll angle.

Description

Technical Field

[0001] The present invention relates to a loading device for a load, in particular to a loading device suitable for loading the load of an unmanned vehicle, belonging to the technical field of underwater unmanned vehicles. Background Art

[0002] Existing unmanned aerial vehicles (UAVs) typically load their payloads from the side. However, a specific UAV has proposed the use of a bottom-loading mechanism. Currently, there is no device for loading payloads from the bottom of underwater UAVs. Furthermore, due to the large mass of the payload, manual loading is not practical. Therefore, a loading mechanism capable of loading payloads from the bottom of an UAV is needed. Summary of the Invention

[0003] In view of this, the present invention provides a loading device suitable for loading unmanned aerial vehicle payloads, which can load the payload from the bottom of the unmanned aerial vehicle, and the loading process is reliable and the loading efficiency is high.

[0004] The technical solution of the present invention is: a loading device suitable for loading an unmanned aerial vehicle, comprising:

[0005] base;

[0006] A walking unit installed on the base and capable of moving in a longitudinal direction of the base;

[0007] An adaptive loading unit installed on the traveling unit and capable of rising and falling under the drive of the traveling unit;

[0008] The adaptive loading unit is used to load a load and can realize adaptive centering of the load and adjustment of the load roll angle.

[0009] On the basis of the above solution, further, the adaptive loading unit includes: an adaptive bearing mechanism and a lifting frame assembly;

[0010] The adaptive bearing mechanism comprises two connected adaptive bearing components arranged along the axial direction of the load;

[0011] The adaptive bearing assembly includes: an adaptive frame, a tightening belt, a roller, a position locking mechanism, an adaptive slider, an air spring and a spring centering seat;

[0012] The adaptive frame has a support frame with an arc-shaped surface, and a plurality of rollers for adjusting the load roll angle are arranged on the arc-shaped surface along the circumference; the arc-shaped surfaces on the two support frames are coaxial;

[0013] The fastening belt is detachably connected to the support frame and is used to fix the load;

[0014] The bottom of each of the adaptive frames is provided with an adaptive slider for slidingly cooperating with the lifting frame assembly;

[0015] Two air springs are installed on the adaptive frame along the sliding direction of the adaptive slider, the piston rods of the two air springs are opposite to each other, and the cylinder ends are fixed to the adaptive frame; the piston rod ends of the two air springs respectively contact the spring centering seats installed on the lifting frame assembly;

[0016] The position locking mechanism is used to adaptively lock and unlock the position of the loading unit in the lifting frame assembly;

[0017] The lifting frame assembly is used to cooperate with the walking unit to realize the lifting and lowering of the adaptive loading unit.

[0018] On the basis of the above scheme, further, the position locking mechanism includes: a clutch handle arranged on the adaptive frame and a clutch locking plate arranged on the lifting frame assembly. The clutch locking plate locks and unlocks the clutch handle to achieve the position locking and unlocking of the adaptive bearing mechanism on the lifting frame assembly.

[0019] On the basis of the above solution, further, the adaptive load-bearing assembly further includes: a fine-tuning arc plate and a fine-tuning handle;

[0020] A fine-tuning curved plate that can be raised and lowered is provided in the middle of the support frame. The fine-tuning handle is the power mechanism of the fine-tuning curved plate. The end of the fine-tuning handle is connected to the fine-tuning curved plate. The fine-tuning curved plate can be raised and lowered by rotating the fine-tuning handle.

[0021] The pitch angle of the load is adjusted by raising and lowering the fine-tuning arc plates in the two adaptive load-bearing components.

[0022] The lifting frame assembly includes: a lifting frame, a linear guide rail, a limit pin and a lifting slider;

[0023] The lifting frame has two L-shaped supports connected by a longitudinal connecting piece; the two L-shaped supports correspond one to one with the two adaptive bearing components;

[0024] The upper surface of the horizontal end of the L-shaped support is provided with a linear guide rail that slides with the adaptive slider;

[0025] The L-shaped support is provided with a lifting slider that slides with the walking unit;

[0026] The lifting frame is provided with a limit pin for limiting the position of the lifting frame assembly when it is lifted and lowered to an extreme position along the walking unit.

[0027] On the basis of the above solution, further, the walking unit includes: a walking frame, a belt, a movable pulley set, an electro-hydraulic push rod, a longitudinal translation mechanism and a lifting guide rail;

[0028] The walking frame has an L-shaped frame structure, and the vertical portion of the walking frame is provided with a guide lifting rail and a lifting slider on the lifting frame assembly;

[0029] The walking frame is connected to a belt via a vertically arranged screw rod, and the other end of the belt is connected to a belt connecting block arranged on the lifting frame after passing through a movable pulley group;

[0030] The power output end of the electro-hydraulic push rod fixed on the walking frame is connected to the movable pulley group, which is used to drive the movable pulley group to move up and down; and then the lifting frame assembly is lifted and lowered through the belt drive;

[0031] The longitudinal translation mechanism arranged on the walking frame is used to drive the walking unit to translate longitudinally on the base.

[0032] On the basis of the above solution, further, the longitudinal translation mechanism includes: a driving sprocket handwheel, a chain, a driven gear mechanism and a translation slider;

[0033] The driving sprocket handwheel is a structure in which a driving sprocket is coaxially fixedly connected to the central axis of the handwheel;

[0034] The driven gear mechanism includes a coaxially fixed driven sprocket and a gear;

[0035] The chain is wound around the driving sprocket and the driven sprocket to form a chain drive, which transmits the rotation of the hand wheel to the gear to realize the rotation of the gear; the gear cooperates with the rack provided on the base;

[0036] The bottom surface of the horizontal portion of the walking frame is provided with a translation slider that is slidably matched with the base.

[0037] On the basis of the above solution, further, the base includes: a base frame, a translation guide rail, a rack and a universal caster;

[0038] The surface of the base frame is provided with a longitudinal translation guide rail that is slidably matched with the translation slider;

[0039] The base frame is provided with a rack in the longitudinal direction and meshes with the gear in the driven gear mechanism;

[0040] A plurality of universal casters with locking functions are provided at the bottom of the base frame for moving the entire loading device.

[0041] On the basis of the above solution, further, the universal caster is connected to the base frame through a leveling screw, and the leveling screw is used to adjust the height of the universal caster.

[0042] On the basis of the above solution, further, a lifting ring is provided on the base frame for lifting the entire loading device.

[0043] Beneficial effects:

[0044] (1) The loading device suitable for loading the payload of an unmanned aerial vehicle of the present invention can load the payload from the bottom of the unmanned aerial vehicle, and the loading process is reliable and the loading efficiency is high.

[0045] (2) The adaptive loading unit of the present invention can realize adaptive centering adjustment of the load and adjustment of the roll angle of the load, wherein the adaptive centering adjustment ensures that when the load is mounted on the aircraft, the axis of the adaptive loading unit and the load is parallel to the axis of the aircraft, and the adjustment of the roll angle ensures that the installation interface set on the load is in a set horizontal position, thereby achieving high-precision alignment through adaptive adjustment.

[0046] (3) The adaptive load-bearing assembly of the present invention is also provided with a fine-tuning arc plate, which can adjust the pitch angle of the load to meet the loading requirements.

[0047] (4) In the walking unit of the present invention, the belt is connected to the lifting frame through a high-strength screw. The high-strength screw can adjust the tightness of the belt, so that the adaptive loading unit can be lifted and lowered reliably.

[0048] (5) In the present invention, the universal casters are connected to the base frame through leveling screws, and the height of each universal caster can be adjusted through the leveling screws to achieve leveling of the entire loading device.

[0049] (6) The base frame of the present invention is provided with a lifting ring to facilitate the overall lifting of the loading device. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 Schematic diagram of the structure of a loading device suitable for loading an unmanned aerial vehicle payload according to the present invention;

[0051] Figure 2 is a structural diagram of the adaptive loading mechanism;

[0052] Figure 3 Schematic diagram of the structure of the adaptive bearing mechanism;

[0053] Figure 4 Schematic diagram of the structure of the lifting frame;

[0054] Figure 5 It is a structural diagram of the walking unit;

[0055] Figure 6 A schematic diagram of the base structure.

[0056] Among them: 1-adaptive loading unit, 2-travel unit, 3-base, 4-adaptive bearing mechanism, 5-lifting frame assembly, 6-tightening belt, 7-roller, 8-fine-tuning arc plate, 9-fine-tuning handle, 10-adaptive frame, 11-clutch handle, 12-air spring, 13-adaptive slider, 14-spring centering seat, 15-clutch locking plate, 16-linear guide, 17-lifting frame, 18-limit pin, 19-lifting slider, 20-belt connecting block, 21-belt, 22-movable pulley set, 23-electro-hydraulic push rod, 24-driving sprocket handwheel, 25-chain, 26-driven gear mechanism, 27-translational slider, 28-travel frame, 29-lifting guide rail, 30-universal caster, 31-leveling screw, 32-lifting ring, 33-translational guide rail, 34-base frame, 35-rack, 40-load. DETAILED DESCRIPTION

[0057] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0058] This embodiment provides a loading device suitable for loading payloads of unmanned aerial vehicles, which can load payloads from the bottom of the unmanned aerial vehicle, and the loading process is reliable and efficient.

[0059] like Figure 1 As shown, the loading device for loading the payload of the unmanned aerial vehicle comprises: an adaptive loading unit 1, a traveling unit 2 and a base 3. The traveling unit 2 is mounted on the base 3 and is used to drive the adaptive loading unit 1 loaded with the payload 40 to move.

[0060] For the convenience of description, the axial direction of the load 40 is assumed to be the front-to-back direction (also the longitudinal direction); Figure 2 As shown, the adaptive loading unit 1 has a front-to-back symmetrical structure, including: an adaptive bearing mechanism 4 and a lifting frame assembly 5; the adaptive bearing mechanism 4 is used to load the load 40, and the adaptive bearing mechanism 4 is connected to the lifting frame assembly 5 through a linear guide pair; the lifting frame assembly 5 is used to cooperate with the walking unit 2 to realize the lifting of the adaptive loading unit 1.

[0061] like Figure 3 As shown, the adaptive bearing mechanism 4 is a front-to-back symmetrical structure, comprising two adaptive bearing components with the same structure, and the two adaptive bearing components arranged along the axial direction of the load are connected by a connecting rod.

[0062] The adaptive load-bearing assembly includes an adaptive frame 10, a tightening strap 6, rollers 7, a fine-tuning curved plate 8, a fine-tuning handle 9, a clutch handle 11, an air spring 12, an adaptive slider 13, and a spring centering seat 14. The tightening strap 6 is used to secure the load; the adaptive frame 10 is a welded structure and serves as the main load-bearing component; the adaptive frame 10 includes a support frame and support columns disposed at both ends of the bottom of the support frame; in this example, the load 40 is a cylindrical load, so the upper portion of the tightening strap 6 is an arc-shaped surface consistent with the shape of the load 40; the two ends of the lower opening of the tightening strap 6 are connected to the two ends of the support frame through hooks; the upper surface of the support frame is also an arc-shaped surface, and a plurality of rollers 7 are disposed on the arc-shaped surface. After the load is loaded, the rollers 7 contact the load surface, and the rollers 7 facilitate adjustment of the roll angle of the load 40 to ensure that the mounting interface disposed on the load 40 is in a horizontal position.

[0063] A fine-tuning arc plate 8 that can be fine-tuned in lifting and lowering is provided in the middle of the support frame. The fine-tuning handle 9 is a threaded mechanism (such as a screw-nut pair), which can convert rotational motion into linear motion; the end of the fine-tuning handle 9 is connected to the fine-tuning arc plate 8, that is, by rotating the fine-tuning handle 9, the lifting and lowering of the fine-tuning arc plate 8 can be achieved. By lifting and lowering the fine-tuning arc plate 8 in the two adaptive load-bearing components, the load can be fine-tuned at a pitch angle of 40° to meet the loading requirements.

[0064] A crossbeam is provided between the two support columns at the bottom of the support frame, and two air springs 12 are mounted on the crossbeam. The axial directions of the two air springs 12 are parallel to the crossbeam, and the piston rods of the two air springs 12 are opposite each other, with the cylinder ends fixed to the crossbeam. A spring centering seat 14 is provided between the piston rods of the two air springs 12 (i.e., the piston rods of the air springs 12 contact the spring centering seat 14, so that the spring centering seat 14 is sandwiched between the piston rods of the two air springs 12). The spring centering seat 14 is mounted on the lifting frame assembly 5. The two air springs 12 enable automatic centering adjustment of the adaptive frame 10, ensuring that when the load is mounted on the aircraft, the axis of the load 40 is parallel to the axis of the aircraft. In this example, the spring centering seat 14 is located in the vertical plane where the axis of the curved surface of the support frame is located.

[0065] An adaptive slider 13 is provided at the bottom of each support of the adaptive frame 10 for connecting with and guiding the lifting frame assembly 5 .

[0066] In addition, a clutch handle 11 is provided on the outer column of the adaptive frame 10 for cooperating with a clutch locking plate 15 provided on the lifting frame assembly 5 to achieve locking and unlocking of the adaptive bearing mechanism 4 at the position of the lifting frame assembly 5.

[0067] like Figure 4As shown, the lifting frame assembly 5 has a front-to-back symmetrical structure, comprising a lifting frame 17, a clutch locking plate 15, a linear guide 16, a limit pin 18, a lifting slider 19, and a belt connecting block 20. The lifting frame 17 is a welded rectangular tube structure and serves as the primary load-bearing component of the lifting frame assembly 5. The lifting frame 17 has two L-shaped supports connected by two longitudinal connecting tubes. The two L-shaped supports correspond one-to-one with the two adaptive load-bearing assemblies. The clutch locking plate 15 is fixed to the horizontal end of each L-shaped support by fasteners. When the clutch handle 11 is in the locked position within the clutch locking plate 15, the adaptive load-bearing mechanism 4 can be locked in the position of the lifting frame assembly 5. When the clutch handle 11 is disconnected from the clutch locking plate 15, the adaptive load-bearing mechanism 4 can move along the linear guide 16 of the lifting frame assembly 5.

[0068] A linear guide rail 16 is provided on the upper surface of the horizontal end of each L-shaped support, and the linear guide rail 16 slides with the adaptive slider 13 at the lower end of the adaptive frame 10, thereby realizing the connection between the lifting frame assembly 5 and the adaptive bearing mechanism 4, and guiding the movement of the adaptive bearing mechanism 4 on the lifting frame assembly 5.

[0069] A limit pin 18 is provided on the longitudinal connecting tube of the lifting frame 17 to safely limit the lifting frame assembly 5 when it reaches its upper and lower limits. In this example, the limit pin 18 is spring-loaded, and a limit hole is provided on the travel unit at the upper and lower limits. When the lifting frame 17 reaches its upper and lower limits, the limit pin 18 automatically pops out and enters the limit hole, thereby automatically locking.

[0070] In addition, lifting sliders 19 are provided at the upper and lower ends of the outer side surfaces of the vertical end of each L-shaped support. The lifting sliders 19 are used to connect and guide the lifting frame assembly 5 and the walking unit 2; a belt connecting block 20 is also provided on the longitudinal connecting pipe of the lifting frame 17 for connecting the belt 21.

[0071] like Figure 5 As shown, the walking unit 2 comprises a walking frame 28, a belt 21, a movable pulley assembly 22, an electro-hydraulic push rod 23, a driving sprocket handwheel 24, a chain 25, a driven gear mechanism 26, a translation slider 27, and a lifting guide rail 29. The walking frame 28 is an L-shaped frame structure welded from rectangular tubes and serves as the primary load-bearing component of the walking unit 2. The vertical portion of the walking frame 28 comprises two vertical rods and a plurality of horizontal rods connecting the two vertical rods. Guide lifting guide rails 29 are provided on the outer sides of the two vertical rods of the walking frame 28. The two guide lifting guide rails 29 respectively slidably engage with the lifting sliders 19 on the outer sides of the vertical ends of the two L-shaped supports of the lifting frame assembly 5, thereby connecting and guiding the adaptive loading unit 1.

[0072] Two vertical, high-strength screws are mounted side by side on the central crossbar of the traveling frame 28. Each screw is connected to a belt 21. The other ends of the two belts 21 pass over two movable pulleys in a movable pulley assembly 22 and are then connected to two belt connection blocks 20 on the lifting frame 17. The belts 21 are used for transmission and lifting, with their ends adjusted in tension by the high-strength screws. The movable pulley assembly 22, based on the principle of movable pulleys, enables the lifting of the lifting frame assembly 5, thereby enabling the adaptive loading mechanism 1 to be raised and lowered.

[0073] The electro-hydraulic push rod 23 fixed on the walking frame 28 is the lifting power source, and its power output end is connected to the movable pulley group 22, and the movable pulley group 22 is lifted and lowered by linear motion; and the lifting frame assembly 5 is lifted and lowered by belt transmission.

[0074] The travel unit 2 is capable of traveling in a straight longitudinal direction on the base 3. A driving sprocket handwheel 24, mounted on the travel frame 28, serves as the power source for this linear travel. The driving sprocket handwheel 24 is a structure in which a driving sprocket is coaxially fixed to the handwheel's central axis. A chain 25 connects the driving sprocket handwheel 24 and a driven gear mechanism 26, thereby transmitting the rotational motion of the driving sprocket handwheel 24 to the driven gear mechanism 26. Specifically, the driven gear mechanism 26 includes a coaxially fixed driven sprocket and a gear. The chain 25 wraps around the driving sprocket and driven sprocket, forming a chain drive, thereby transmitting the rotation of the handwheel to the gear, thereby achieving the gear's rotational motion. The horizontal bottom surface of the travel frame 28 has four rectangularly distributed translation sliders 27, which are used to connect and guide the travel unit 2 to the base 3.

[0075] like Figure 6 As shown, the base 3 has a front-to-back symmetrical structure, comprising a base frame 34, translation guide rails 33, racks 35, universal casters 30, leveling screws 31, and lifting rings 32. The base frame 34 is a welded profile structure and serves as the primary load-bearing component of the base 3. Longitudinal translation guide rails 33 are provided on the surfaces of the two longitudinal rods of the base frame 34. The two translation guide rails 33 on the translation slider 27 at the bottom of the walking frame 28 slide together to guide the walking unit 2 along the longitudinal straight line on the base 3. Furthermore, a rack 35 is provided longitudinally on the base 3, meshing with the gear in the driven gear mechanism 26. The coordination of the rack and gear 35 enables the longitudinal translation of the walking unit 2 (i.e., the walking unit 2 moves longitudinally relative to the base 3).

[0076] Universal casters 30 are provided at the four corners of the bottom of the base frame 34 to achieve free movement of the entire loading device; the universal casters 30 are connected to the base frame 34 through leveling screws 31, and the leveling screws 31 can adjust the height of each universal caster 30 through a threaded structure to achieve leveling of the loading device; in addition, lifting rings 32 are provided at the four corners of the base frame 34 for lifting the entire loading device.

[0077] The specific working process of the loading device is as follows:

[0078] First, lower the adaptive loading unit 1 along the walking unit to the lowest point and limit it at the current position by the limit pin 18; lock the clutch handle 11 by the clutch locking plate 15 to limit the movement of the adaptive bearing mechanism 4 on the lifting frame assembly 5.

[0079] The load 40 is then hoisted onto the adaptive bearing mechanism 4 (the tightening belt 6 is not installed at this time) and is in contact with the roller 7. The roller 7 is used to fine-tune the roll angle of the load 40 to the desired position, and then the tightening belt 6 is used to tighten the load 40.

[0080] The entire loading device is moved to the bottom of the aircraft by means of the universal casters 30 , and the load axis is made parallel to the aircraft axis (guaranteed by pre-set marks), and then the universal casters 30 are locked.

[0081] The walking unit 2 is adjusted by the active sprocket handwheel 24 so that the walking unit 2 moves in a longitudinal straight line relative to the base 3 (at this time, the universal caster 30 is locked, that is, the base 3 is fixed, and the gear rotates while moving in a straight line along the rack, thereby driving the walking unit 2 to move in a straight line along the base 3), so that the load mark is axially aligned with the aircraft mark, and then locked for movement.

[0082] Release the clutch locking plate 15 to free the adaptive bearing mechanism 4, remove the fastening belt 6, and pull out the limit pin 18;

[0083] Start the electro-hydraulic push rod 23 to raise the adaptive loading unit 1 to the limit position so that the limit pin 18 is automatically locked;

[0084] According to the pitch requirement of the load, adjust the fine-tuning handle 9 to make the fine-tuning arc plate 8 contact the bottom surface of the load 40 until it can no longer be twisted. Then, personnel evacuate and the load is mounted on the aircraft.

[0085] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A loading device suitable for loading unmanned aerial vehicle payloads, characterized in that: include: base; A walking unit installed on the base and capable of moving in a longitudinal direction of the base; An adaptive loading unit installed on the traveling unit and capable of rising and falling under the drive of the traveling unit; The adaptive loading unit is used to load a load and can realize adaptive centering adjustment of the load and roll angle adjustment of the load; The adaptive loading unit comprises: an adaptive bearing mechanism and a lifting frame assembly; The adaptive bearing mechanism comprises two connected adaptive bearing components arranged along the axial direction of the load; The adaptive bearing assembly includes: an adaptive frame, a tightening belt, a roller, a position locking mechanism, an adaptive slider, an air spring and a spring centering seat; The adaptive frame has a support frame with an arc-shaped surface, and a plurality of rollers for adjusting the load roll angle are arranged on the arc-shaped surface along the circumference; the arc-shaped surfaces on the two support frames are coaxial; The fastening belt is detachably connected to the support frame and is used to fix the load; The bottom of each of the adaptive frames is provided with an adaptive slider for slidingly cooperating with the lifting frame assembly; Two air springs are installed on the adaptive frame along the sliding direction of the adaptive slider, the piston rods of the two air springs are opposite to each other, and the cylinder ends are fixed to the adaptive frame; the piston rod ends of the two air springs respectively contact the spring centering seats installed on the lifting frame assembly; The position locking mechanism is used to adaptively lock and unlock the position of the loading unit in the lifting frame assembly; The lifting frame assembly is used to cooperate with the walking unit to realize the lifting and lowering of the adaptive loading unit.

2. The loading device for unmanned aerial vehicle according to claim 1, characterized in that: The position locking mechanism includes: a clutch handle provided on the adaptive frame and a clutch locking plate provided on the lifting frame assembly. The clutch locking plate locks and unlocks the clutch handle to achieve the position locking and unlocking of the adaptive bearing mechanism on the lifting frame assembly.

3. The loading device for unmanned aerial vehicle according to claim 1 or 2, characterized in that: The adaptive load-bearing assembly further comprises: a fine-tuning arc plate and a fine-tuning handle; A fine-tuning curved plate that can be raised and lowered is provided in the middle of the support frame. The fine-tuning handle is the power mechanism of the fine-tuning curved plate. The end of the fine-tuning handle is connected to the fine-tuning curved plate. The fine-tuning curved plate can be raised and lowered by rotating the fine-tuning handle. The pitch angle of the load is adjusted by raising and lowering the fine-tuning arc plates in the two adaptive load-bearing components.

4. The loading device for unmanned aerial vehicle according to claim 1 or 2, characterized in that: The lifting frame assembly includes: a lifting frame, a linear guide rail, a limit pin and a lifting slider; The lifting frame has two L-shaped supports connected by a longitudinal connecting piece; the two L-shaped supports correspond one to one with the two adaptive bearing components; The upper surface of the horizontal end of the L-shaped support is provided with a linear guide rail that slides with the adaptive slider; The L-shaped support is provided with a lifting slider that slides with the walking unit; The lifting frame is provided with a limit pin for limiting the position of the lifting frame assembly when it is lifted and lowered to an extreme position along the walking unit.

5. The loading device for unmanned aerial vehicle according to claim 4, characterized in that: The walking unit includes: a walking frame, a belt, a movable pulley set, an electro-hydraulic push rod, a longitudinal translation mechanism and a lifting guide rail; The walking frame has an L-shaped frame structure, and the vertical portion of the walking frame is provided with a guide lifting rail and a lifting slider on the lifting frame assembly; The walking frame is connected to a belt via a vertically arranged screw rod, and the other end of the belt is connected to a belt connecting block arranged on the lifting frame after passing through a movable pulley group; The power output end of the electro-hydraulic push rod fixed on the walking frame is connected to the movable pulley group, which is used to drive the movable pulley group to move up and down; and then the lifting frame assembly is lifted and lowered through the belt drive; The longitudinal translation mechanism arranged on the walking frame is used to drive the walking unit to translate longitudinally on the base.

6. The loading device for unmanned aerial vehicle according to claim 5, characterized in that: The longitudinal translation mechanism includes: a driving sprocket handwheel, a chain, a driven gear mechanism and a translation slider; The driving sprocket handwheel is a structure in which a driving sprocket is coaxially fixedly connected to the central axis of the handwheel; The driven gear mechanism includes a coaxially fixed driven sprocket and a gear; The chain is wound around the driving sprocket and the driven sprocket to form a chain drive, which transmits the rotation of the hand wheel to the gear to realize the rotation of the gear; the gear cooperates with the rack provided on the base; The bottom surface of the horizontal portion of the walking frame is provided with a translation slider that is slidably matched with the base.

7. The loading device for unmanned aerial vehicle according to claim 6, characterized in that: The base comprises: a base frame, a translation guide rail, a rack and universal casters; The surface of the base frame is provided with a longitudinal translation guide rail that is slidably matched with the translation slider; The base frame is provided with a rack in the longitudinal direction and meshes with the gear in the driven gear mechanism; A plurality of universal casters with locking functions are provided at the bottom of the base frame for moving the entire loading device.

8. The loading device for unmanned aerial vehicle according to claim 7, characterized in that: The universal caster is connected to the base frame via a leveling screw, and the leveling screw is used to adjust the height of the universal caster.

9. The loading device for unmanned aerial vehicle according to claim 7 or 8, characterized in that: The base frame is provided with a lifting ring for lifting the entire loading device.

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