Convenient multifunctional airplane wheel transfer trolley for airport

Abstract

The invention belongs to the technical field of airplane wheel transfer devices, and discloses an airport convenient multifunctional airplane wheel transfer trolley which comprises a compartment, rear wheels are connected to the two sides of the rear end of the compartment correspondingly, and front wheels are connected to the front end of the compartment through connecting assemblies correspondingly; the connecting assembly comprises a first rotating shaft rotationally connected with the front wheel, the first rotating shaft is connected with a shaft sleeve, and a second rotating shaft is rotationally connected in the shaft sleeve and connected with the carriage; the shaft sleeves are connected with first connecting rods, the free end of one first connecting rod is rotationally connected with a second connecting rod, and the free end of the second connecting rod is rotationally connected with the other first connecting rod. The second connecting rod is connected with a third connecting rod, one end of the third connecting rod is rotationally connected with the carriage, the other end of the third connecting rod is connected with a traction component, and the traction component is of a telescopic structure; the transfer trolley is high in flexibility and suitable for various traction devices, the transportation efficiency is improved, and the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft wheel transfer devices, in particular to a convenient and multifunctional aircraft wheel transfer vehicle for airports. Background Art

[0002] With the advancement of strategic air force construction, the demand for military airport transfer vehicles is growing to meet the ground support needs of different military aircraft. Military aircraft are also in a period of renewal and replacement, and the corresponding transfer equipment also needs to be upgraded to meet the performance and use requirements of new aircraft. The country's emphasis on and investment in the modernization of military equipment has provided policy support and financial guarantees for the development of the military airport transfer vehicle industry. The development of the military airport transfer vehicle industry is a complex process involving the combined effects of multiple factors such as technology, market, and policy. With the growth of military needs and the continuous advancement of technology, the industry will continue to maintain its development momentum.

[0003] Currently, the wheels are mostly transported by manual rolling, which has low transportation efficiency and wastes a lot of manpower. Summary of the invention

[0004] The present invention aims to provide a convenient and multifunctional aircraft wheel transfer vehicle for airports. Compared with the manual rolling method for transporting aircraft wheels, the transfer vehicle of the present invention has high flexibility and is suitable for a variety of traction equipment, which not only improves transportation efficiency but also reduces labor costs.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A convenient and multifunctional wheel transfer vehicle for an airport comprises a carriage, wherein rear wheels are respectively connected to both sides of the rear end of the carriage, the front end of the carriage has two grooves, and the front end of the carriage is respectively connected to front wheels corresponding to the grooves one by one through a connecting assembly, and parts of the front wheels are located in the grooves; the connecting assembly comprises a first rotating shaft rotatably connected to the wheel hub of the front wheel, the first rotating shaft is fastened with a shaft sleeve, and the axis of the first rotating shaft is perpendicular to the axis of the shaft sleeve, a second rotating shaft is rotatably connected in the shaft sleeve, and the second rotating shaft is fastened to the carriage; the shaft sleeve is fastened with a first connecting rod, a free end of one of the first connecting rods is rotatably connected to a second connecting rod, and the free end of the second connecting rod is rotatably connected to another first connecting rod; the second connecting rod is fastened with a third connecting rod, one end of the third connecting rod is rotatably connected to the carriage, the other end of the third connecting rod is fastened with a traction component, and the traction component is a retractable structure.

[0007] Furthermore, the traction component comprises a traction shaft connected to the third connecting rod, the traction shaft is slidably connected to a traction sleeve, and the traction sleeve is connected to a fastener for limiting the sliding of the traction sleeve.

[0008] Furthermore, the traction sleeve is provided with a shock-absorbing structure, which includes a connecting plate fastened to one end of the traction sleeve away from the third connecting rod, the connecting plate is slidably connected to a sliding rod, the sliding rod sleeve is provided with a first spring, one end of the first spring is fastened to the connecting plate, the other end of the first spring is fastened to the sliding rod, and the first spring is located in the traction sleeve.

[0009] Furthermore, the second rotating shaft is fastened to the carriage via a U-shaped frame, both ends of the second rotating shaft are respectively connected to two side plates of the U-shaped frame, the U-shaped frame is fastened to the carriage, and a plurality of ribs are provided between the U-shaped frame and the carriage.

[0010] Furthermore, a plurality of partition frames are detachably connected in the carriage.

[0011] Furthermore, the carriage includes a carriage body and a rear side panel, wherein the carriage body includes a bottom plate and a plurality of side panels, the rear side panel is rotatably connected to the bottom plate, and the rear side panel is provided with a locking member for limiting the rotation of the rear side panel, and the height of the rear side panel is greater than the distance between the bottom plate and the ground, and the radius of the front wheel and the rear wheel are both greater than the distance between the bottom plate and the ground.

[0012] Furthermore, the locking member includes an L-shaped connecting rod and several connecting rings fastened to the side plates, the rear side plates are connected with a U-shaped groove, one end of the L-shaped connecting rod passes through the U-shaped groove and the connecting ring, and is connected with a limiting component for limiting the axial movement of the L-shaped connecting rod along the connecting ring; and the L-shaped connecting rod is rotatably connected to the connecting ring.

[0013] Furthermore, the limiting assembly includes a second spring fastened to the connecting ring, the L-shaped connecting rod is threadedly connected with a locking nut, the second spring is in a compressed state, and is located between the connecting ring and the locking nut.

[0014] Furthermore, the second connecting rod is a V-shaped rod.

[0015] Furthermore, the bottom plate, the rear side plate and the side plates are all provided with weight-reducing holes.

[0016] The principle and beneficial effects of the technical solution are:

[0017] 1. A convenient and multifunctional airport wheel transfer vehicle provided by the present invention has a carriage for placing wheels, and the carriage is provided with two rear wheels and two front wheels, and the two rear wheels are located on both sides of the rear end of the carriage, which is beneficial to improving the use space of the box body, and the two front wheels are located in the groove at the front end of the carriage, which improves the turning performance of the transfer vehicle, increases the turning angle, and has good maneuverability; and compared with three wheels, the center of gravity of the transfer vehicle is not easy to deviate, and the transfer vehicle is not easy to tip over; and the front wheels are connected with a turning structure and a traction structure for driving the transfer vehicle to turn, and the wheel hub of the front wheel is rotatably connected with a first rotating shaft, and the first rotating shaft is connected with a shaft sleeve, and the shaft sleeve is perpendicular to the first rotating shaft, that is, the axis of the first rotating shaft is in the horizontal direction, and the axis of the shaft sleeve is in the vertical direction, and the second rotating shaft is rotatably connected in the shaft sleeve, and the second rotating shaft is tightly connected to the carriage, and the shaft sleeve is tightly connected with the first connecting rod, and the first connecting rod is connected with the first connecting rod. The connecting rod is rotatably connected to a second connecting rod, and a free end of the second connecting rod is connected to the first connecting rod of another wheel, that is, the edge of the carriage, the second rotating shaft, the shaft sleeve, the second connecting rod and the two first connecting rods form a quadrilateral, so that the transfer vehicle is more stable when turning, and the middle part of the third connecting rod is tightly connected to the second connecting rod, one end of the third connecting rod is rotatably connected to the carriage, and the other end is tightly connected to a retractable traction component; the traction vehicle or manually drives the traction component to turn, and the traction component drives the second connecting rod to rotate with the connection with the carriage as the center of the circle, the second connecting rod drives the first connecting rod to rotate, the first connecting rod drives the shaft sleeve to rotate, and the shaft sleeve drives the front wheel to rotate to achieve turning; in this way, the transfer vehicle is more stable when turning, and has high flexibility, and the retractable traction component can also adjust the height to adapt to different traction equipment, which not only improves transportation efficiency but also reduces labor costs;

[0018] 2. The invention provides a convenient and multifunctional airport wheel transfer vehicle, wherein the traction sleeve is connected with a shock absorbing structure, the connecting plate of the shock absorbing structure is tightly connected to the end of the traction sleeve, a sliding rod is slidably connected in the connecting plate, a first spring is sleeved on the sliding rod, the first spring is located in the traction sleeve, one end of the first spring is connected to the connecting plate, and the other end is connected to the sliding rod, when the transfer vehicle is bumpy during transportation, the sliding rod may slide in the vertical direction, and the spring can play a buffering and shock absorbing role. For example, the sliding rod slides upward along the axis, the connecting plate is tightly connected to the traction sleeve, one end of the first spring connected to the connecting plate is fixed, and the other end of the first spring is compressed upward with the traction shaft to slow down the sliding speed of the sliding rod, which can play a buffering and shock absorbing role, so as to reduce damage to the traction equipment, increase the stability of the transfer vehicle, and improve the transfer efficiency;

[0019] 3. The invention provides a convenient and multifunctional airport wheel transport vehicle. The height of the rear side plate is greater than the distance between the bottom plate and the ground, which is conducive to pushing the wheel into the carriage, and the rear side plate contacts the ground to act as a bridge; the radius of the front wheel and the rear wheel are both greater than the distance between the bottom plate and the ground, which is conducive to increasing the travel speed of the wheel transport vehicle and improving the transportation efficiency; a partition frame is detachably connected inside the carriage to separate the wheels to avoid collision between the wheels during transportation, and the two partition frames are disassembled, and the transport vehicle can be used to transport other materials; the bottom plate, the rear side plate and the side plates are all provided with weight-reducing holes to reduce the weight of the transport vehicle and save costs;

[0020] 4. In the convenient and multifunctional airport wheel transfer vehicle provided by the present invention, the third connecting rod is set in a V-shaped structure, which can reduce resistance during transportation, increase the transfer speed, and save costs; the second rotating shaft is connected to the carriage through a U-shaped frame, and a plurality of ribs are provided at the connection between the U-shaped frame and the carriage, which increases the connection strength, reduces the material consumption, and saves costs;

[0021] 5. The present invention provides a convenient and multifunctional airport wheel transfer vehicle, in which the rear side plate is connected to the car body through an L-shaped connecting rod, and the L-shaped connecting rod passes through one end of a connecting ring and is sleeved with a second spring, one end of the second spring is connected to the connecting ring, a locking nut is threadedly connected to the L-shaped connecting rod, and the second spring is located between the connecting ring and the locking nut. The elastic force of the spring can limit the movement of the L-shaped connecting rod toward the rear end of the car body, and cooperate with the other end of the L-shaped connecting rod to fix the rear side plate; and rotating the locking nut can also adjust the elastic force of the spring, thereby adjusting the force required to rotate the L-shaped connecting rod, thereby increasing the convenience of use and improving the transfer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a convenient and multifunctional airport wheel transfer vehicle of the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of a convenient and multifunctional airport wheel transfer vehicle of the present invention. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the structure of a convenient and multifunctional airport wheel transfer vehicle of the present invention. Figure 3 ;

[0025] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0026] Figure 5 It is a structural schematic diagram of a traction shaft and a shock absorbing structure of a convenient and multifunctional airport wheel transfer vehicle of the present invention;

[0027] Figure 6It is a structural schematic diagram of a traction sleeve of a convenient and multifunctional airport wheel transfer vehicle of the present invention;

[0028] Figure 7 A top view of a convenient and multifunctional airport wheel transfer vehicle according to the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of a convenient and multifunctional airport wheel transfer vehicle of the present invention. Figure 4 ;

[0030] Fig. 9 for Figure 8 The enlarged schematic diagram of point B in the middle;

[0031] The names of the corresponding marks in the accompanying drawings are:

[0032] Carriage 1, bottom plate 11, side plate 12, rear side plate 13, weight reduction hole 14, partition frame 15, groove 16, rear wheel 21, front wheel 22, first rotating shaft 31, bushing 32, second rotating shaft 33, first connecting rod 34, second connecting rod 35, third connecting rod 36, U-shaped frame 37, rib 371, traction shaft 41, traction sleeve 42, flange 421, fastener 43, threaded hole 44, connecting plate 51, sliding rod 52, first spring 53, traction ring 54, L-shaped connecting rod 61, connecting ring 62, U-shaped groove 63, second spring 64, washer 65, locking nut 66, and wheel 7. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0034] like Figures 1 to 9As shown, a convenient and multifunctional airport wheel transfer vehicle comprises a carriage 1, and rear wheels 21 are connected to both sides of the rear end of the carriage 1, and the front end of the carriage 1 has two grooves 16, the cross-sectional shape of the grooves 16 is a right-angled trapezoid, and the right angle of the grooves 16 faces the front end of the carriage 1, and the front end of the carriage 1 is respectively connected to two front wheels 22 corresponding to the grooves 16 through a connecting assembly, and parts of the front wheels 22 are located in the grooves 16; a plurality of partition frames 15 are detachably connected in the carriage 1 by bolts; wherein the connecting assembly comprises a first rotating shaft 31 rotatably connected to the wheel hub of the front wheel 22, and the first rotating shaft 31 is fastened with a shaft sleeve 32 , and the axis of the first rotating shaft 31 is perpendicular to the axis of the shaft sleeve 32, the shaft sleeve 32 is rotatably connected with the second rotating shaft 33, the second rotating shaft 33 is fastened to the carriage 1 through the U-shaped frame 37, the two ends of the second rotating shaft 33 are respectively connected to the two side plates 12 of the U-shaped frame 37, the U-shaped frame 37 is fastened to the carriage 1, and a plurality of ribs 371 are arranged between the U-shaped frame 37 and the carriage 1; the shaft sleeve 32 is fastened with a first connecting rod 34, the free end of one first connecting rod 34 is rotatably connected with the second connecting rod 35, the free end of the second connecting rod 35 is rotatably connected with another first connecting rod 34; and the middle part of the second connecting rod 35 is fastened with the second connecting rod 35. There are three connecting rods 36, and the second connecting rod 36 is a V-shaped rod. One end of the third connecting rod 36 is rotatably connected to the carriage 1, and the other end of the third connecting rod 36 is fastened with a traction component, and the traction component is a telescopic structure. In this embodiment, the traction component includes a traction shaft 41 fastened to the third connecting rod 36, and the traction shaft 41 is slidably connected with a traction sleeve 42, and the traction sleeve 42 is connected with a fastener 43 that limits the sliding of the traction sleeve 42. Specifically, the traction shaft 41 and the traction sleeve 42 are both provided with threaded holes 44, and bolts pass through the threaded holes 44 on the traction sleeve 42 and the traction shaft 41 in turn to fix the traction sleeve 42 and the traction shaft 41; The guide sleeve 42 is also provided with a shock absorbing structure, which includes a connecting plate 51 that is fastened to one end of the traction sleeve 42 away from the third connecting rod 36, wherein the traction sleeve 42 is connected with a flange 421, the connecting plate 51 is connected to the flange 421 by bolts, and the connecting plate 51 is slidably connected to a slide bar 52, the slide bar 52 is sleeved with a first spring 53, one end of the first spring 53 is fastened to the connecting plate 51, the other end of the first spring 53 is fastened to the slide bar 52, and the first spring 53 is located in the traction sleeve 42; wherein the end of the slide bar 52 away from the first spring 53 is connected to a traction ring 54, and the diameter of the traction ring 54 is 110 mm;In this embodiment, the carriage 1 includes a carriage body and a rear side plate 13, wherein the carriage body includes a bottom plate 11 and three side plates 12, the bottom plate 11, the rear side plate 13 and the side plates 12 are all provided with weight reduction holes 14, the rear side plate 13 is rotatably connected to the bottom plate 11 through a rotating shaft pin, and the rear side plate 13 is provided with a locking member for limiting the rotation of the rear side plate 13, and the height of the rear side plate 13 is greater than the distance between the bottom plate 11 and the ground, the radius of the front wheel 22 and the rear wheel 21 are both greater than the distance between the bottom plate 11 and the ground, in this embodiment, the diameters of the front wheel 22 and the rear wheel 21 are both 320 mm, and the distance between the bottom plate 11 and the ground is 140mm; the locking member includes an L-shaped connecting rod 61 and a plurality of connecting rings 62 fastened to the side plate 12, the rear side plate 13 is connected with a U-shaped groove 63, one end of the L-shaped connecting rod 61 passes through the U-shaped groove 63 and the connecting ring 62, and is connected with a limiting assembly for limiting the axial movement of the L-shaped connecting rod 61 along the connecting ring 62; and the L-shaped connecting rod 61 is rotatably connected to the connecting ring 62; the limiting assembly includes a second spring 64 fastened to the connecting ring 62, the L-shaped connecting rod 61 is threadedly connected with a locking nut 66, and the second spring 64 is in a compressed state, and the second spring 64 is located between the connecting ring 62 and the locking nut 66. Among them, the fastening connection of the present application can be a welding connection or a bolt connection. ;

[0035] The following is a comparative experiment of using the transfer vehicle of the present application to transport the wheels and manually rolling the wheels:

[0036] The dimensions of the wheel transfer vehicle are 2100×1850×1050mm, its own weight is 80kg, and its main material is low-carbon steel. The dimensions of the wheel 7 are 1200×1200×500mm, the wheel hub diameter is 16 inches, the maximum speed is 60km / h, the rated speed is 35km / h, and a single solid wheel 7 can bear 1000kgf. The number of axles of the transfer vehicle is four, the rated load is 600kg, the maximum load is 1000kg, and the safety margin is 0.2; the first connecting rod 34, the second connecting rod 35, the third connecting rod 36, the traction shaft 41 and the traction parts are all made of alloy steel as the main material, with a yield strength of 620Mpa, a Poisson's ratio of 0.28, and an elastic modulus of 210000Mpa. Bolts, pins, and movable hinges are all made of international standard parts. The predicted value of durability is 5 years, and the predicted value of uninterrupted use time is 8000 hours.

[0037] The transfer test was carried out according to the route specified by the airport. The test distance was 1 km. The overall transfer time using the transfer vehicle of the present invention took 5 minutes, of which the transportation process took 1.5 minutes, the loading time took 30 seconds, the preparation work took 3 minutes, and one person organized the loading.

[0038] The transfer wheel 7 was transported manually according to the airport's prescribed route. The test distance was 1 km and the overall transfer time was 35 minutes, of which the manual rolling process took 30 minutes and the preparation work took 5 minutes. At least three people were required to perform the manual rolling work.

[0039] According to the above test results, the transport efficiency of the transfer vehicle of the present invention in airport wheel transfer work is improved by about 85%, and the manpower utilization rate is improved by about 60%, achieving remarkable results in improving transport efficiency and reducing labor costs.

[0040] The specific implementation process is as follows:

[0041] When using the transfer vehicle of the present invention, the L-shaped connecting rod 61 is rotated so that the end of the L-shaped connecting rod 61 close to the rear side plate 13 is toward the top of the car body 1, the rear side plate 13 is rotated in the direction away from the car body 1, and the rear side plate 13 is in contact with the ground to form a slope. After the machine wheel 7 is transported to the car body 1, the rear side plate 13 is rotated in the direction close to the car body 1, and the L-shaped connecting rod 61 is rotated again so that the end of the L-shaped connecting rod 61 close to the rear side plate 13 is in contact with the rear side plate 13, and then the traction component is dragged manually or with a traction device.

[0042] In summary, the present invention provides a convenient and multifunctional airport wheel transfer vehicle, wherein the carriage 1 is used to place the wheels 7, the carriage 1 is provided with two rear wheels 21 and two front wheels 22, and the two rear wheels 21 are located on both sides of the rear end of the carriage 1, which is beneficial to improving the use space of the box body, and the two front wheels 22 are located in the groove 16 at the front end of the carriage 1, which improves the turning performance of the transfer vehicle, increases the turning angle, and has good maneuverability; and compared with three wheels, the center of gravity of the transfer vehicle is not easy to deviate, and the transfer vehicle is not easy to tip over; and the front wheels 22 are connected with a turning structure and a traction structure for driving the transfer vehicle to turn, and the wheel hub of the front wheel 22 is rotatably connected with a first rotating shaft 31, and the first rotating shaft 31 is connected with a shaft sleeve 32, and the shaft sleeve 32 is perpendicular to the first rotating shaft 31, that is, the axis of the first rotating shaft 31 is in the horizontal direction, and the axis of the shaft sleeve 32 is in the vertical direction, and the second rotating shaft 33 is rotatably connected in the shaft sleeve 32, and the second rotating shaft 33 is fastened to the carriage 1, and the shaft sleeve 32 is fastened to the first connecting rod 34 The first connecting rod 34 is rotatably connected to the second connecting rod 35, and the free end of the second connecting rod 35 is connected to the first connecting rod 34 of another wheel, that is, the edge of the carriage 1, the second rotating shaft 33, the shaft sleeve 32, the second connecting rod 35 and the two first connecting rods 34 form a quadrilateral, so that the transfer vehicle is more stable when turning, and the middle part of the third connecting rod 36 is tightly connected to the second connecting rod 35, one end of the third connecting rod 36 is rotatably connected to the carriage 1, and the other end is tightly connected to a retractable traction component; the tractor or the manual traction component turns, the traction component drives the second connecting rod 35 to rotate with the connection with the carriage 1 as the center of the circle, the second connecting rod 35 drives the first connecting rod 34 to rotate, the first connecting rod 34 drives the shaft sleeve 32 to rotate, and the shaft sleeve 32 drives the front wheel 22 to rotate to achieve turning; in this way, the transfer vehicle is more stable and flexible when turning, and the retractable traction component can also adjust the height to adapt to different traction equipment, which not only improves transportation efficiency but also reduces labor costs.

[0043] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A convenient and multifunctional airport wheel transfer vehicle, characterized in that: The invention comprises a carriage (1), wherein the two sides of the rear end of the carriage (1) are respectively connected to rear wheels (21), the front end of the carriage (1) has two grooves (16), and the front end of the carriage (1) is respectively connected to front wheels (22) corresponding to the grooves (16) through a connecting assembly, and a part of the front wheels (22) is located in the grooves (16); the connecting assembly comprises a first rotating shaft (31) rotatably connected to the wheel hub of the front wheel (22), the first rotating shaft (31) is fastened to a shaft sleeve (32), and the axis of the first rotating shaft (31) is perpendicular to the axis of the shaft sleeve (32), and the shaft sleeve (32) is provided with a first rotating shaft (31) and a second rotating shaft ... A second rotating shaft (33) is rotatably connected, and the second rotating shaft (33) is tightly connected to the carriage (1); the shaft sleeve (32) is tightly connected to a first connecting rod (34), and the free end of one of the first connecting rods (34) is rotatably connected to a second connecting rod (35), and the free end of the second connecting rod (35) is rotatably connected to another first connecting rod (34); the second connecting rod (35) is tightly connected to a third connecting rod (36), one end of the third connecting rod (36) is rotatably connected to the carriage (1), and the other end of the third connecting rod (36) is tightly connected to a traction component, and the traction component is a telescopic structure.

2. The convenient and multifunctional airport wheel transfer vehicle according to claim 1, characterized in that: The traction component comprises a traction shaft (41) connected to the third connecting rod (36), the traction shaft (41) is slidably connected to a traction sleeve (42), and the traction sleeve (42) is connected to a fastener (43) for limiting the sliding of the traction sleeve (42).

3. The convenient and multifunctional airport wheel transfer vehicle according to claim 2, characterized in that: The traction sleeve (42) is provided with a shock absorbing structure, which comprises a connecting plate (51) which is fastened to one end of the traction sleeve (42) away from the third connecting rod (36), the connecting plate (51) is slidably connected to a sliding rod (52), the sliding rod (52) is sleeved with a first spring (53), one end of the first spring (53) is fastened to the connecting plate (51), the other end of the first spring (53) is fastened to the sliding rod (52), and the first spring (53) is located in the traction sleeve (42).

4. The convenient and multifunctional airport wheel transfer vehicle according to claim 1, characterized in that: The second rotating shaft (33) is tightly connected to the carriage (1) via a U-shaped frame (37); the two ends of the second rotating shaft (33) are respectively connected to two side plates of the U-shaped frame (37); the U-shaped frame (37) is tightly connected to the carriage (1); and a plurality of ribs (371) are provided between the U-shaped frame (37) and the carriage (1).

5. The convenient and multifunctional airport wheel transport vehicle according to claim 1, characterized in that: A plurality of partition frames (15) are detachably connected in the carriage (1).

6. The convenient and multifunctional airport wheel transfer vehicle according to claim 1, characterized in that: The carriage (1) comprises a carriage body and a rear side panel (13), wherein the carriage body comprises a bottom panel (11) and a plurality of side panels (12), the rear side panel (13) is rotatably connected to the bottom panel (11), and the rear side panel (13) is provided with a locking member for limiting the rotation of the rear side panel (13), and the height of the rear side panel (13) is greater than the distance between the bottom panel (11) and the ground, and the radii of the front wheels (22) and the rear wheels (21) are both greater than the distance between the bottom panel (11) and the ground.

7. The convenient and multifunctional airport wheel transfer vehicle according to claim 1, characterized in that: The locking member comprises an L-shaped connecting rod (61) and a plurality of connecting rings (62) which are fixedly connected to the side plate (12); the rear side plate (13) is connected with a U-shaped groove (63); one end of the L-shaped connecting rod (61) passes through the U-shaped groove (63) and the connecting ring (62), and is connected with a limiting component for limiting the axial movement of the L-shaped connecting rod (61) along the connecting ring (62); and the L-shaped connecting rod (61) is rotatably connected with the connecting ring (62).

8. The convenient and multifunctional airport wheel transfer vehicle according to claim 7, characterized in that: The limiting assembly comprises a second spring (64) which is tightly connected to the connecting ring (62); the L-shaped connecting rod (61) is threadedly connected to a locking nut (66); the second spring (64) is in a compressed state and is located between the connecting ring (62) and the locking nut (66).

9. The convenient and multifunctional airport wheel transport vehicle according to claim 1, characterized in that: The second connecting rod (35) is a V-shaped rod.

10. The convenient and multifunctional airport wheel transfer vehicle according to claim 1, characterized in that: The bottom plate (11), the rear side plate (13) and the side plate (12) are all provided with weight-reducing holes (14).

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