AGV (Automatic Guided Vehicle) transfer trolley for aircraft battery replacement

Abstract

The utility model discloses an AGV (Automatic Guided Vehicle) transfer trolley for aircraft battery replacement, and relates to the technical field of new energy aircraft battery replacement. Comprising a battery transfer vehicle capable of carrying an AGV to move; the battery transfer vehicle comprises a vehicle frame main body, a swing rod mechanism and a lifting mechanism, the vehicle frame main body comprises a containing bin allowing the AGV to enter, a battery temporary storage table is arranged above the containing bin, the AGV can be locked in the containing bin through the swing rod mechanism, and the height position of the AGV relative to the vehicle frame main body can be adjusted through the lifting mechanism; the AGV trolley comprises a trolley body, a locking and unlocking platform, a lifting mechanism and a posture leveling mechanism, a plurality of locking and unlocking guns are arranged on the locking and unlocking platform, the lifting mechanism can drive the locking and unlocking platform to move up and down in the height direction of the trolley body, and the trolley body can be adjusted to be parallel to the battery pack through the posture leveling mechanism. Therefore, the battery pack can be rapidly transported from the battery charging bin to the position near the airplane to achieve rapid energy supplement.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy aircraft battery replacement technical field especially, it is a kind of AGV transfer trolley for aircraft battery replacement. TECHNICAL BACKGROUND

[0002] New energy aircraft, that is, the aircraft using non-traditional fossil fuel as power source.

[0003] The battery replacement technology of new energy aircraft refers to the technology of achieving energy supply by quickly replacing battery pack during the flight or parking of the aircraft. This technology can significantly reduce the parking time of the aircraft and improve operational efficiency. With the continuous progress of new energy aircraft technology, battery replacement technology is expected to become a crucial part of future aviation industry. However, the current battery replacement technology still has certain limitations in the operation process. SUMMARY

[0004] The utility model mainly solves the technical problem to provide a kind of AGV transfer trolley for aircraft battery replacement, battery pack is quickly transported to the aircraft nearby to realize fast energy supply from battery charging bin.

[0005] To solve the above technical problems, one technical scheme adopted by the utility model is as follows:

[0006] An AGV transfer trolley for aircraft battery replacement includes a battery transfer vehicle capable of carrying the AGV trolley to move. The battery transfer vehicle includes a frame main body, a swing lever mechanism and a lifting mechanism. The frame main body includes a containing bin for the AGV trolley to enter, and a battery temporary storage platform is arranged above the containing bin. The AGV trolley can be locked in the containing bin by the swing lever mechanism, and the height position of the AGV trolley relative to the frame main body can be adjusted by the lifting mechanism.

[0007] The AGV trolley includes a vehicle body, a locking and unlocking platform, a lifting mechanism and an attitude leveling mechanism. A plurality of locking and unlocking guns are arranged on the locking and unlocking platform. The lifting mechanism can drive the locking and unlocking platform to move up and down along the height direction of the vehicle body. The vehicle body can be adjusted to be parallel to the battery pack by the attitude leveling mechanism. The bottom of the vehicle body is provided with a power universal wheel.

[0008] Further, the swing lever mechanism is symmetrically arranged on both sides of the containing bin. The swing lever mechanism includes a connecting seat, a rotating bracket and an electric push rod. The connecting seat is installed on the frame main body. The rotating bracket is rotationally arranged on the upper end of the connecting seat. The rotating bracket is connected with the electric push rod through a connecting sheet. The vehicle body is provided with a clamping groove matched with the rotating bracket on both sides. The electric push rod is driven to extend or retract to realize the rotation of the rotating bracket in or out of the clamping groove.

[0009] Further, the lifting mechanism comprises a lifting ring, an electric cylinder, a steel wire rope, a pulley block and a linear guide rail set, the lifting ring is arranged at the upper end of the rotating bracket, the pulley block is installed on the vehicle frame body, the two ends of the steel wire rope are connected with the lifting ring and the output end of the electric cylinder respectively, and the transmission cooperation is realized through the pulley block, the output end of the driving electric cylinder is extended or retracted to pull the steel wire rope, so that the lifting or lowering of the rotating bracket is realized; so as to further adjust the height position of the AGV trolley, it is worth noting that before the operation, the rotating bracket of the swing lever mechanism should be rotated into the clamping groove.

[0010] The linear guide rail set comprises a guide rail arranged along the height direction of the vehicle frame body, and a sliding block is arranged in the guide rail and fixedly connected with the connecting seat.

[0011] Further, the battery temporary storage platform comprises a telescopic battery claw set, when the battery claw set is extended, the battery pack can be cached above the battery claw set.

[0012] Further, the locking and unlocking platform comprises a fixed plate fixedly arranged at the upper end of the lifting mechanism, a floating plate is arranged above the fixed plate, the fixed plate and the floating plate are both provided with electromagnets, after the electromagnets are electrified, the floating plate is suspended above the fixed plate, and a floating pull bolt is arranged between the fixed plate and the floating plate to limit the suspension distance of the floating plate.

[0013] Further, a plurality of battery supporting blocks and battery positioning pins are arranged on the floating plate.

[0014] Further, the lifting mechanism comprises a rigid chain assembly and a scissor fork mechanism arranged between the vehicle body and the locking and unlocking platform.

[0015] Further, the attitude leveling mechanism comprises a plurality of attitude adjusting units distributed on the bottom of the vehicle body, the attitude adjusting unit comprises a through hole, an adjusting fixed seat, an adjusting column, a ground support seat and a driving motor arranged coaxially, the through hole is arranged on the bottom of the vehicle body, the adjusting fixed seat is fixedly installed on the bottom of the vehicle body, the adjusting column has an external thread and is threadedly connected with the adjusting fixed seat, the lower end of the adjusting column is rotatably connected with the ground support seat, and the driving motor is connected with the upper end of the adjusting column.

[0016] The driving motor drives the adjusting column to rotate, so as to adjust the distance between the adjusting fixed seat and the ground. It is worth noting that when the attitude leveling mechanism acts, the AGV trolley is in the landing state, and the ground support seat contacts the ground.

[0017] Further, the accommodating bin is symmetrically provided with two, each of which can accommodate the AGV trolley, and the two AGV trolleys are respectively used for mounting full-electricity batteries and detaching power-supplying batteries.

[0018] Further, the bottom of the vehicle frame body is symmetrically provided with an auxiliary wheel assembly, which comprises a plurality of auxiliary wheels and a driving device for driving one of the auxiliary wheels to rotate.

[0019] The beneficial technical effects of the utility model are as follows:

[0020] The utility model is used for quickly transporting a battery pack from a battery charging bin to the vicinity of an airplane to realize quick energy supplement, with the rapid development of new energy airplanes, the application of the battery replacement technology in the aviation field can significantly improve the operation efficiency of the airplane, reduce the ground maintenance time, and thus increase the availability and economic benefits of flights.

[0021] The battery transfer vehicle can carry the AGV trolley to move synchronously through the swing lever mechanism and the lifting mechanism, which aims to ensure that the AGV trolley and the battery transfer vehicle can reach the predetermined location at the same time when the battery replacement demand occurs, reduce the occupation of the airport route, shorten the time required for the battery replacement process, and reduce the probability of safety accidents;

[0022] The AGV trolley and the battery pack are adjusted to a horizontal plane through the height adjustment units at the four corners of the AGV trolley, so as to realize accurate positioning and angle correction.

[0023] The unlocking platform comprises a floating mechanism, when the floating plate is electrified with the electromagnet on the fixed plate, the floating plate is separated from the fixed plate to realize suspension, the floating pull bolt between the floating plate and the fixed plate limits the suspension height of the floating plate, and finally realizes the floating of the positioning error between the AGV trolley and the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the overall structure schematic diagram of the utility model;

[0025] Figure 2 is the overall structure schematic diagram of the battery transfer vehicle of the utility model;

[0026] Figure 3 is Figure 2 is the enlarged view of

[0027] Figure 4 is Figure 2 is the top view of

[0028] Figure 5 is the overall structure schematic diagram of the AGV trolley of the utility model;

[0029] Figure 6 yes Figure 5 Another perspective;

[0030] Figure 7 This is a structural schematic diagram of the AGV trolley of this utility model (excluding the unlocking platform);

[0031] Figure 8 This is a schematic diagram of the unlocking platform of this utility model;

[0032] Figure 9 This is a schematic diagram of the structure of the salary adjustment unit of this utility model;

[0033] The parts in the attached diagram are labeled as follows:

[0034] 1. Battery transfer vehicle;

[0035] 11. Main frame;

[0036] 12. Rocker arm mechanism; 121. Connecting seat; 122. Rotating bracket; 123. Electric actuator; 124. Connecting plate;

[0037] 13. Lifting mechanism; 131. Lifting ring; 132. Electric cylinder; 133. Wire rope; 134. Pulley block; 135. Guide rail; 136. Sliding block;

[0038] 14. Storage compartment;

[0039] 15. Battery temporary storage platform; 151. Battery claw assembly;

[0040] 16. Auxiliary wheel assembly; 161. Drive unit;

[0041] 2. AGV (Automated Guided Vehicle) trolley;

[0042] 21. Vehicle body; 211. Card slot; 212. LiDAR;

[0043] 22. Unlocking / unlocking platform; 221. Unlocking / unlocking gun; 222. Fixing plate; 223. Floating plate; 2231. Battery holder; 2232. Battery positioning pin; 224. Floating bolt;

[0044] 23. Lifting mechanism; 231. Rigid chain assembly; 232. Scissor fork mechanism;

[0045] 24. Posture leveling mechanism; 241. Through hole; 242. Adjustment fixing seat; 243. Adjustment column; 244. Ground support seat; 245. Drive motor;

[0046] 25. Powered swivel casters

[0047] 3. Battery pack. Detailed Implementation

[0048] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0049] This specific embodiment discloses in detail an AGV transfer vehicle for aircraft battery swapping, such as... Figures 1 to 9 As shown, the battery transfer vehicle 1 is capable of carrying AGV trolleys 2. The battery transfer vehicle includes a frame body 11, a swing arm mechanism 12 and a lifting mechanism 13. The frame body includes a receiving compartment 14 for the AGV trolley to enter. Two receiving compartments are symmetrically arranged. Each receiving compartment can accommodate the AGV trolley. The two AGV trolleys are used to install a fully charged battery and remove a discharged battery, respectively.

[0050] A battery storage platform 15 is provided above the storage compartment. The battery storage platform includes a retractable battery claw assembly 151. When the battery claw assembly is extended, the battery pack can be buffered and placed above the battery claw assembly.

[0051] The swing arm mechanism can lock the AGV trolley in the receiving compartment. The swing arm mechanism is symmetrically arranged on both sides of the receiving compartment. The swing arm mechanism includes a connecting seat 121, a rotating bracket 122 and an electric push rod 123. The connecting seat is installed on the main body of the vehicle frame. The rotating bracket is rotatably disposed on the upper end of the connecting seat. The rotating bracket and the electric push rod are connected by a connecting piece 124. The two sides of the vehicle body are provided with slots 211 that cooperate with the rotating bracket. The electric push rod is driven to extend and retract to realize the rotating bracket rotating in and out of the slots.

[0052] The lifting mechanism allows adjustment of the AGV's height relative to the main frame. The lifting mechanism includes a lifting ring 131, an electric cylinder 132, a wire rope 133, a pulley block 134, and a linear guide rail assembly. The lifting ring is positioned at the upper end of the rotating bracket, and the pulley block is mounted on the main frame. The two ends of the wire rope are connected to the lifting ring and the output end of the electric cylinder, respectively, and are driven by the pulley block. The output end of the electric cylinder extends or retracts to pull the wire rope, thereby raising or lowering the rotating bracket and further adjusting the AGV's height. It is worth noting that before performing this operation, the rotating bracket of the lever mechanism should be ensured to be rotated into the slot. The linear guide rail assembly includes a guide rail 135 positioned along the height direction of the main frame, with a slider 136 slidably disposed within the guide rail. The slider is fixedly connected to the connecting seat.

[0053] The AGV trolley comprises a trolley body 21, a locking / unlocking platform 22, a lifting mechanism 23 and a posture leveling mechanism 24, a plurality of locking / unlocking guns 221 are arranged on the locking / unlocking platform; the locking / unlocking platform comprises a fixed plate 222 fixedly arranged on the upper end of the lifting mechanism, a floating plate 223 is arranged above the fixed plate, the fixed plate and the floating plate are both provided with electromagnets, after the electromagnets are electrified, the floating plate is suspended above the fixed plate, a floating pull bolt 224 limiting the suspension distance of the floating plate is arranged between the fixed plate and the floating plate. A plurality of battery supporting blocks 2231 and battery positioning pins 2232 are arranged on the floating plate.

[0054] The lifting mechanism can drive the locking / unlocking platform to move up and down along the height direction of the trolley body, and the lifting mechanism comprises a rigid chain assembly 231 and a scissor fork mechanism 232 arranged between the trolley body and the locking / unlocking platform. The rigid chain assembly and the scissor fork mechanism are prior art in the technical field of lifting mechanisms, and their structures can be referred to the drawings or other structures achieving the same functions in the prior art.

[0055] The posture leveling mechanism can adjust the trolley body to be parallel to the battery pack, and the posture leveling mechanism comprises a plurality of posture adjusting units distributed on the bottom of the trolley body, each posture adjusting unit comprises a through hole coaxially arranged, an adjusting fixed seat 242, an adjusting column 243, a ground supporting seat 244 and a driving motor 241, the through hole is arranged on the bottom of the trolley body, the adjusting fixed seat is fixedly arranged on the bottom of the trolley body, the adjusting column is provided with an external thread and is threadedly connected with the adjusting fixed seat, the lower end of the adjusting column is rotatably connected with the ground supporting seat, and the driving motor is connected with the upper end of the adjusting column.

[0056] The driving motor drives the adjusting column to rotate, so as to adjust the distance between the adjusting fixed seat and the ground. It is worth noting that the posture leveling mechanism is in action when the AGV trolley is in a fallen state, and the ground supporting seat contacts the ground.

[0057] The bottom of the trolley body is provided with a power universal wheel 25. The bottom of the trolley frame body is symmetrically provided with an auxiliary wheel assembly 16, and the auxiliary wheel assembly comprises a plurality of auxiliary wheels and a driving device 161 driving one of the auxiliary wheels to rotate.

[0058] It is worth noting that the connecting piece is not connected with the electric push rod in the drawing due to the problem of digital model, and in fact it is connected. The rigid chain is not connected with the locking / unlocking platform in the drawing, and in fact it is connected.

[0059] The working principle of the utility model is as follows:

[0060] When the new energy aircraft needs to change the battery, the battery transfer vehicle cooperates with the AGV trolley to drive out of the battery compartment along the set route, and stop at a position 10-20 meters away from the target battery after reaching the set area and coarsely positioning the target battery.

[0061] The combination process of the battery transfer vehicle and the AGV trolley: when the AGV trolley drives to the lower part of the battery transfer vehicle (into the containing compartment), the sensor assembly detects that the AGV trolley is in place, the electric push rod in the swing lever mechanism changes from the retracted state to the extended state, driving the rotating bracket to rotate, and the four rotating brackets are simultaneously extended and rotated into the corresponding clamping grooves of the AGV trolley. After the sensor assembly detects that the rotating bracket is in place, the two electric push rods in the lifting mechanism start to retract synchronously, tightening the steel wire rope, causing the lifting ring in the lifting mechanism to be tightened by the steel wire rope, and the four sliding blocks move upward simultaneously, so that the AGV trolley is lifted until the wheels are off the ground. The electric push rod reaches the preset position mechanism to stop rising, and the above is reversed to make the AGV battery changing trolley descend. The purpose of this is to make the AGV trolley and the battery transfer vehicle reach the target place at the same time when there is a need to change the battery, reduce the occupation of the airport route, shorten the battery changing distance, and reduce the occurrence of safety accidents.

[0062] After the battery transfer vehicle with the AGV trolley reaches the position 10-20 meters away from the target and stops, the two AGV trolleys are lowered to the ground by the swing lever mechanism and the lifting mechanism in the battery transfer vehicle, and the wheels of the two AGV trolleys are on the ground. One AGV trolley performs precise positioning of the target battery through the infrared vision camera and laser radar installed on itself, disassembles the feeding battery on the target battery, and the other AGV trolley takes the full battery stored on the battery temporary storage platform to the AGV trolley.

[0063] The process of disassembling the power supply battery: first, the infrared vision camera mounted on the AGV trolley confirms the position of the battery target, when the infrared vision camera detects the infrared light emitted by the battery target, the AGV trolley moves to the lower abdomen of the battery target under the assistance of the infrared vision camera, when the infrared vision camera identifies that the AGV battery trolley has traveled to the specified area, the four laser radars mounted on the AGV trolley identify the battery pack of the battery target, each individual battery pack has four special reflection holes for laser radar identification, when the laser radar identifies the four reflection holes, it starts to identify the angle of the battery target battery pack, when the angle data is measured by the laser radar, the attitude leveling mechanism mounted at the bottom of the AGV trolley starts to work, through the data feedback of the laser radar, the four corner adjustment units mounted on the AGV trolley are adjusted in different heights according to different data, so as to realize the adjustment of the AGV trolley and the battery pack mounted on the battery target to a horizontal plane (parallel), at this time, the AGV trolley has been accurately positioned and angle corrected with the battery target, the next step is to start the lifting mechanism mounted on the AGV trolley, the lifting mechanism is composed of scissors and rigid chain, the input power source is rigid chain, and the scissors play a stabilizing role, thereby reducing the shaking during lifting. When lifting to the high position, the electromagnets on the floating plate and the fixed plate are electrified, and under the principle of same direction attraction and opposite direction repulsion, the floating plate is separated and suspended, the floating pull bolt between the floating plate and the fixed plate limits the suspension height of the floating plate (although the floating plate is suspended, it needs to have a certain floating amount, and the floating pull bolt on the fixed plate limits the floating amount of the floating plate during suspension), thereby realizing the floating of the positioning error between the AGV trolley and the battery pack.

[0064] The lifting mechanism continues to lift 20mm upward, the battery positioning pin mounted on the floating plate is recognized with the positioning pin hole on the battery pack, so that the battery pack has a relative position limit with the battery positioning pin on the floating plate, thereby preparing for the next step of disassembling the battery with the unlocking gun, after the battery positioning pin and the battery pack positioning are successful, the bottom surface of the battery pack contacts the battery block mounted on the floating plate, and the corresponding bolt buckle also falls into the sleeve of the unlocking gun mounted on the floating plate, the sensor detection assembly detects that the battery pack has been positioned, and the unlocking gun starts to work, rotates counterclockwise to rotate the bolt buckle to separate the battery pack from the aircraft. After the bolt buckle is successfully unlocked, the electromagnets mounted on the floating plate and the fixed plate are de-energized, so that the floating plate falls on the floating limiting column of the fixed plate, and the lifting mechanism of the AGV trolley starts to descend, until it descends to the low position, and the attitude leveling mechanism starts to retract, and the disassembly of the battery ends.

[0065] The process that the AGV takes the full battery on the battery transfer vehicle: through four groups of laser radars installed at the bottom of the AGV, the battery group of the battery replacement target is recognized, and the angle of the battery group of the battery replacement target is recognized, the attitude leveling mechanism at the bottom of the AGV starts to work, so that the AGV and the battery group on the battery transfer vehicle are adjusted to a horizontal plane, at this time, the AGV has been accurately positioned and the angle of the battery transfer vehicle has been corrected, the lifting mechanism starts to work, when lifting to the high position, the electromagnets on the floating plate and the fixed plate are powered on, the floating mechanism works, the lifting mechanism continues to lift upward by 20mm, after the battery positioning pin is successfully positioned with the battery group, the lifting mechanism continues to lift upward by 20mm, the battery group is separated from the battery supporting jaw group of the temporary storage platform, the battery supporting jaw group is retracted, the electromagnets are powered off, and the lifting mechanism with the full battery starts to descend until it descends to the low position, the attitude leveling mechanism starts to retract, and the process of taking the full battery is completed.

[0066] The AGV with the full battery group drives out from below the battery transfer vehicle, approaches the battery replacement target through an infrared vision camera, and repeats the above steps to install the battery group on the battery replacement target, the AGV with the full battery group is transported to the battery transfer vehicle, and the above steps are repeated to buffer the battery on the temporary storage platform, and the whole process is completed.

[0067] In the description of the present application, it should be pointed out that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the application.

[0068] In the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0069] The above is only the preferred embodiment of the present application, and is not used to limit the present application, it should be pointed out that, for ordinary skilled persons in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. An AGV transfer trolley for aircraft battery replacement, characterized in that: The battery transfer trolley (1) can carry the AGV (2) to move, the battery transfer trolley includes a frame body (11), a swing lever mechanism (12) and a lifting mechanism (13), the frame body includes a containing bin (14) for the AGV to enter, and a battery temporary storage platform (15) is arranged above the containing bin, the swing lever mechanism can lock the AGV in the containing bin, and the lifting mechanism can adjust the height position of the AGV relative to the frame body. The AGV includes a vehicle body (21), a locking and unlocking platform (22), a lifting mechanism (23) and a posture leveling mechanism (24), a plurality of locking and unlocking guns (221) are arranged on the locking and unlocking platform, the lifting mechanism can drive the locking and unlocking platform to move up and down along the height direction of the vehicle body, the posture leveling mechanism can adjust the vehicle body to be parallel to the battery pack, and a power universal wheel (25) is arranged at the bottom of the vehicle body.

2. The AGV transfer trolley for aircraft battery replacement according to claim 1, characterized in that: The swing lever mechanism is symmetrically arranged on both sides of the containing bin, the swing lever mechanism includes a connecting seat (121), a rotating bracket (122) and an electric push rod (123), the connecting seat is installed on the frame body, the rotating bracket is rotationally arranged at the upper end of the connecting seat, the rotating bracket is connected with the electric push rod through a connecting sheet (124), and both sides of the vehicle body are provided with clamping grooves (211) matched with the rotating bracket; the electric push rod is driven to be telescopic to realize the rotation of the rotating bracket in and out of the clamping grooves.

3. The AGV transfer trolley for aircraft battery replacement according to claim 2, characterized in that: The lifting mechanism includes a lifting ring (131), an electric cylinder (132), a steel wire rope (133), a pulley block (134) and a linear guide rail group, the lifting ring is arranged at the upper end of the rotating bracket, the pulley block is installed on the frame body, the two ends of the steel wire rope are connected with the lifting ring and the output end of the electric cylinder respectively, and are driven in cooperation through the pulley block, the output end of the electric cylinder is extended or retracted to pull the steel wire rope, so that the rotating bracket is lifted or lowered; The linear guide rail group includes a guide rail (135) arranged along the height direction of the frame body, and a sliding block (136) is slidably arranged in the guide rail, and the sliding block is fixedly connected with the connecting seat.

4. The AGV transfer trolley for aircraft battery replacement according to claim 1, characterized in that: The battery temporary storage platform includes a telescopic battery claw group (151), when the battery claw group is extended, the battery pack can be arranged above the battery claw group.

5. The AGV transfer trolley for aircraft battery replacement according to claim 1, characterized in that: The locking and unlocking platform includes a fixed plate (222) fixedly arranged at the upper end of the lifting mechanism, a floating plate (223) is arranged above the fixed plate, the fixed plate and the floating plate are both provided with electromagnets, after the electromagnets are electrified, the floating plate is suspended above the fixed plate, and a floating pull bolt (224) is arranged between the fixed plate and the floating plate to limit the suspension distance of the floating plate.

6. The AGV transfer trolley for aircraft battery replacement according to claim 5, characterized in that: A plurality of battery supporting blocks (2231) and battery positioning pins (2232) are arranged on the floating plate.

7. The AGV transfer trolley for aircraft battery replacement of claim 1, wherein: The lifting mechanism includes a rigid chain assembly (231) arranged between the vehicle body and the locking and unlocking platform and a scissor fork mechanism (232).

8. The AGV transfer trolley for aircraft battery replacement of claim 1, wherein: The posture leveling mechanism comprises a plurality of posture adjusting units distributed on the bottom of the vehicle body, each posture adjusting unit comprises a through hole coaxially arranged, an adjusting fixed seat (242), an adjusting column (243), a ground support seat (244) and a driving motor (241), the through hole is arranged on the bottom of the vehicle body, the adjusting fixed seat is fixedly arranged on the bottom of the vehicle body, the adjusting column is provided with an external thread and is threadedly connected with the adjusting fixed seat, the lower end of the adjusting column is rotatably connected with the ground support seat, and the driving motor is connected with the upper end of the adjusting column; the driving motor drives the adjusting column to rotate, so that the distance between the adjusting fixed seat and the ground is adjusted.

9. The AGV transfer trolley for aircraft battery replacement of claim 1, wherein: The two AGV trolleys are respectively used for mounting a full-battery and dismounting a feeding battery.

10. The AGV transfer trolley for aircraft battery replacement of claim 1, wherein: The bottom of the vehicle frame body is symmetrically provided with an auxiliary wheel assembly (16), the auxiliary wheel assembly comprises a plurality of auxiliary wheels and a driving device (161) for driving one of the auxiliary wheels to rotate.

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