Aerial rotation device for aircraft tire

Abstract

The invention discloses an aircraft tire air autorotation device which comprises a rising and falling main support used for being connected with an aircraft and a wheel shaft fixedly connected with the rising and falling main support, a shaft sleeve is arranged at the end of the wheel shaft, and the shaft sleeve can move along the outer side face of the wheel shaft. The two tires are connected to the two sides of the wheel shaft respectively and can rotate relative to the wheel shaft; the outer gear ring is fixedly arranged at the end part of the tire; the inner gear ring is arranged on the inner side of the outer gear ring, and the inner gear ring can be meshed with the outer gear ring; the suction device is arranged on the outer side face of the wheel shaft and used for controlling the shaft sleeve to move along the outer side face of the wheel shaft, and the device further comprises an upper impeller assembly and a lower impeller assembly. The wear of the tire is reduced, and the service life of the tire is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft, and in particular to an aircraft tire air self-rotation device. Background Art

[0002] When an aircraft touches the ground for landing, it is running at high speed, but the tires are stationary, resulting in a large speed difference. The tires are in a state of sliding friction for a short time, and their surface temperature will rise sharply and exceed 200°C, causing smoke to come out of the tires. Because the tires are inflated, the tire pressure will also increase significantly due to the temperature rise, posing a hidden danger to the safety of tire use. In addition, the high temperature and the heavy weight of the aircraft cause severe wear on the tires during this process, reducing the number of times the tires can be used, causing them to be scrapped prematurely, and increasing their cost of use.

[0003] Therefore, those skilled in the art are in urgent need of studying an aviation tire with less tire wear and longer service life. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the existing aircraft tires have a large speed difference relative to the ground when landing, the tread is severely worn, and the service life is short.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An aviation tire air rotation device, comprising:

[0007] A main landing support, wherein the main landing support is used to connect to the aircraft,

[0008] A wheel axle, the wheel axle is fixedly connected to the main landing support, a shaft sleeve is provided at the end of the wheel axle, and the shaft sleeve can move along the outer side surface of the wheel axle;

[0009] Tires, wherein the tires are respectively connected to two sides of the wheel axle and can rotate relative to the wheel axle;

[0010] An outer gear ring, the outer gear ring is fixedly arranged at the end of the tire and fixedly connected to the inner rim of the tire;

[0011] An inner gear ring, the inner gear ring is arranged inside the outer gear ring and can mesh with the inner gear ring;

[0012] A suction device, the suction device is arranged on the outer side of the wheel axle, and is used to control the movement of the sleeve along the outer side of the wheel axle;

[0013] An upper impeller assembly, one end of which is fixedly connected to the upper side of the shaft sleeve, and the other end of which is provided with a friction wheel adapted to the inner ring of the inner gear ring, and the impeller on the upper impeller assembly can rotate relative to the wheel shaft;

[0014] A lower impeller assembly, one end of which is fixedly connected to the lower side of the shaft sleeve and is coaxially arranged with the upper impeller assembly, and the other end of the lower impeller assembly is provided with a friction wheel adapted to the inner ring of the inner gear ring, and the lower impeller of the lower impeller assembly can rotate relative to the wheel shaft;

[0015] Wherein, the upper impeller assembly is also provided with a steering wheel for synchronizing the upper impeller in the upper impeller assembly and the lower impeller in the lower impeller assembly to rotate in the same direction.

[0016] In one embodiment, the upper impeller assembly includes an upper impeller support and an upper impeller connecting member connected to the upper part of the upper impeller support, and the lower part of the upper impeller support is fixedly connected to the shaft sleeve; the outer side of the upper impeller support is also provided with an impeller connecting pipe that can rotate relative to the upper impeller support, and the impeller connecting pipe connects the upper impeller support and the upper impeller as a whole; the other side of the upper impeller connecting member is fixedly connected to the inner gear ring; the steering wheel is arranged in the upper impeller connecting member.

[0017] In one embodiment, the upper impeller connecting member includes an upper impeller main friction wheel and a "Z" bend, the upper impeller main friction wheel is fixedly coaxially arranged on the upper end of the upper impeller connecting tube; one end of the "Z" bend is fixedly connected to the upper end of the upper impeller support member, and the other end of the "Z" bend is fixedly connected to the inner gear ring; the reversing wheel is rotatably arranged on the outer side of the "Z" bend, and one side of the reversing wheel is tangent to the upper impeller main friction wheel to form a pair of rolling friction pairs, and the other side of the reversing wheel is tangent to one end of the inner gear ring to form a pair of rolling friction pairs.

[0018] In one embodiment, the upper impeller assembly further includes an inner gear ring bracket, one end of the inner gear ring bracket is fixedly connected to the inner gear ring, and the other end of the inner gear ring bracket is fixedly connected to the shaft sleeve.

[0019] In one embodiment, the upper impeller assembly further comprises a U-shaped wheel, the outer circle of the U-shaped wheel is tangent to the inner circle of the inner gear ring and can rotate relatively.

[0020] In one embodiment, a connecting rod is fixed on the suction device, and the end of the connecting rod is fixedly connected to the shaft sleeve.

[0021] In one embodiment, knurling is provided on the contact surface between the upper impeller main friction wheel and the reversing wheel, and on the contact surface between the inner gear ring and the reversing wheel.

[0022] In one embodiment, the main friction wheel and the inner gear ring of the upper impeller are both made of hard materials.

[0023] In one embodiment, the reversing wheel and the main friction wheel of the lower impeller are both made of high-elasticity and high-toughness materials.

[0024] In one embodiment, the upper impeller blade has a vertical or profiled baffle edge that increases wind resistance.

[0025] In one embodiment, a rolling bearing is provided between the upper impeller support member and the lower impeller support member.

[0026] In one embodiment, a rolling bearing is provided between the reversing wheel and the "Z"-shaped bend.

[0027] In one embodiment, the lower impeller assembly includes a lower impeller support member and a lower impeller connecting pipe which is sleeved on the outside of the lower impeller support member and can rotate relative to the lower impeller support member, the upper part of the lower impeller support member is fixedly connected to the shaft sleeve, and the lower impeller connecting pipe connects the lower impeller support member and the lower impeller as a whole; a lower impeller main friction wheel is fixedly and coaxially arranged at the lower end of the lower impeller connecting pipe, and one end of the lower impeller main friction wheel is tangent to one end of the inner gear ring to form a pair of rolling friction pairs.

[0028] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0029] The above structural design of the present invention reduces the speed difference of the tire relative to the ground when the aircraft lands by designing a wind resistance rotation device on the aircraft tire, reduces the wear of the tread, reduces the temperature rise of the tire, improves the safety of tire use, is conducive to reducing tire wear, extending tire service life, saving purchase costs, saving manufacturing energy loss, and reducing carbon emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0031] Figure 2 It is a schematic diagram of the decomposed structure of an embodiment of the present invention.

[0032] Figure 3 It is a schematic diagram of the main cross-sectional structure of an embodiment of the present invention.

[0033] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part C in the middle.

[0034] Figure 5 for Figure 3 Schematic diagram of the enlarged structure of part D in the middle.

[0035] Figure 6 Schematic diagram of the structure of the upper impeller in one embodiment of the present invention.

[0036] Figure 7 It is a schematic diagram of the partial cross-section structure of the upper impeller in the present invention. DETAILED DESCRIPTION

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be understood by those skilled in the art that the embodiments described in the present invention are only exemplary embodiments.

[0041] Embodiments of the present invention are described below with reference to the accompanying drawings.

[0042] like Figures 1 to 6 As shown, the present invention provides an aircraft tire air rotation device, such as Figure 1 As shown, the tire includes a main landing frame 1 for connecting to an aircraft, an axle 2 fixedly connected to the main landing frame 1, and two tires 3 connected to the outer side of the axle 2 and rotatable relative to the axle. A sleeve 8 is provided at the end of the axle 2, and the sleeve 8 can move along the outer side of the axle 2.

[0043] like Figure 1 , Figure 2 and Figure 3As shown, an outer end of the tire 3 is provided with an outer gear ring 4 and an inner gear ring 5. The outer gear ring 4 is provided at the end of the tire and fixedly connected to the outer side of the inner rim of the tire 3. The inner gear ring 5 is provided inside the outer gear ring 4 and can be meshed with the inner gear ring 4.

[0044] The suction device 7 is arranged on the outer side of the axle 2, and is used to control the movement of the sleeve 8 along the outer side of the axle.

[0045] like Figure 4 As shown, one end of the upper impeller assembly 61 is fixedly connected to the upper side of the shaft sleeve 8, and the other end of the upper impeller assembly 61 is fixedly connected to the inner gear ring 5. The impeller 617 on the upper impeller assembly 61 can rotate relative to the wheel shaft 2.

[0046] The upper impeller assembly 61 includes an upper impeller support 611 and an upper impeller connecting member connected to the upper portion of the upper impeller support 611, and the lower portion of the upper impeller support 611 is fixedly connected to the shaft sleeve 8. An upper impeller connecting pipe 612 that can rotate relative to the upper impeller support 611 is also provided on the outer side of the upper impeller support 611, and a rolling bearing 618 is provided between the upper impeller support 611 and the upper impeller connecting pipe 612. The upper impeller connecting pipe 612 connects the upper impeller support 611 and the upper impeller 617 as a whole. A friction wheel that matches the inner ring of the inner gear ring 5 is provided on the other side of the upper impeller connecting member, and a steering wheel is provided in the upper impeller connecting member.

[0047] Specifically, the upper impeller connecting member includes an upper impeller main friction wheel 613 and a "Z" bend 614. The upper impeller main friction wheel 613 is fixedly coaxially arranged at the upper end of the upper impeller connecting pipe 612, one end of the "Z" bend is fixedly connected to the upper end of the upper impeller support member 611, and the other end of the "Z" bend 614 is fixedly connected to the inner gear ring 5. The reversing wheel 615 is rotatably arranged on the outer side of the "Z" bend 614, and one side of the reversing wheel 615 is tangent to the upper impeller main friction wheel 613 to form a pair of rolling friction pairs, and the other side of the reversing wheel 615 is tangent to one end of the inner gear ring 5 to form a pair of rolling friction pairs.

[0048] The upper impeller assembly further comprises a U-shaped wheel 616, the outer circle of the U-shaped wheel is tangent to the inner circle of the inner gear ring 5 and can rotate relatively thereto.

[0049] like Figure 4As shown, the "Z"-shaped bend 614 can be divided into four sections, a left vertical section, a middle horizontal section, a middle vertical section, and a terminal horizontal section, wherein the left vertical section of the "Z"-shaped bend 614 is fixedly connected to the top of the upper impeller support 611, the middle vertical section is connected to the inner hole of the reversing wheel 615 through a rolling bearing 618, the outer circle of the reversing wheel 615 contacts the left end face of the inner gear ring 5, forming a pair of rolling friction pairs, and the outer circle of the reversing wheel 615 is tangent to the main friction wheel 613, also a pair of rolling friction pairs, forming a transmission relationship. A rolling bearing is arranged between the terminal horizontal section of the "Z"-shaped bend 614 and the "U"-shaped wheel 616 in the upper impeller transmission assembly 61.

[0050] Preferably, the upper impeller assembly further includes an inner gear ring bracket 9, one end of the inner gear ring bracket 9 is fixedly connected to the inner gear ring 5, and the other end of the inner gear ring bracket 9 is fixedly connected to the shaft sleeve 8, and the shaft sleeve 8 can drive the inner gear ring 5 to move.

[0051] A connecting rod is fixed on the suction device 7, and the end of the connecting rod is fixedly connected to the shaft sleeve 8. When the connecting rod of the suction device 7 is extended, the connecting rod pushes the shaft sleeve 8 to move, and the shaft sleeve 8 drives the support rod 611, the "Z" bend 614, the reversing wheel 615, and the "U"-shaped wheel 616 to move outward together, and the reversing wheel 615 and the "U"-shaped wheel drive the inner gear ring 5 to move axially along the wheel shaft 2 and mesh with the outer gear ring 4. When the suction device 7 is in action, the upper impeller transmission assembly 61 moves axially to complete the suction and disengagement of the entire upper impeller assembly and the tire 3.

[0052] In order to ensure the stability of the suction device during movement, a key 12 is provided between the wheel axle 2 and the shaft sleeve 8 .

[0053] like Figure 5 As shown, one end of the lower impeller assembly 62 is fixedly connected to the lower side of the sleeve 8 and is coaxially arranged with the upper impeller assembly 61, and the other end of the lower impeller assembly 62 is fixedly connected to the inner gear ring 5, and the lower impeller 624 of the lower impeller assembly 62 can rotate relative to the wheel shaft 2.

[0054] The upper impeller assembly 61 is also provided with a steering wheel for synchronizing the upper impeller 617 in the upper impeller assembly and the lower impeller 624 in the lower impeller assembly to rotate in the same direction.

[0055] Specifically, the lower impeller assembly 62 includes a lower impeller support 621 and a lower impeller connecting pipe 622 which is sleeved on the outer side of the lower impeller support 621 and can rotate relative to the lower impeller support 621. The upper part of the lower impeller support 621 is fixedly connected to the shaft sleeve 8, and the lower impeller connecting pipe 622 connects the lower impeller support 621 and the lower impeller 624 as a whole. The lower end of the lower impeller connecting pipe 622 is fixedly coaxially provided with a lower impeller main friction wheel 623, one end of which is tangent to one end of the inner gear ring 5 to form a pair of rolling friction pairs.

[0056] The upper impeller assembly has a plurality of blades, and the plurality of blades are evenly and fixedly connected to the upper impeller connecting member.

[0057] The connection method between the U-shaped wheel and the inner gear ring in the lower impeller assembly, as well as the components with the same structure as the upper impeller assembly, are the same as those of the upper impeller assembly and are not described in detail here.

[0058] When the aircraft lands, after the main landing support 1 is fully released, the suction device 7 pushes out the sleeve 8. When the sleeve 8 is pushed out, the upper impeller transmission assembly 61 and the inner gear ring support 9 together drive the inner gear ring 5 to move axially along the outer side of the axle 2 until the inner gear ring 5 is meshed with the outer gear ring 4. The wind resistance drives the upper impeller transmission assembly 61 to rotate, the upper impeller transmission assembly 61 drives the inner gear ring 5 to rotate, the inner gear ring 5 drives the outer gear ring 4 to rotate, and then drives the tire 3 to rotate.

[0059] After the aircraft lands and touches the ground, when there is basically no speed difference between the tire 3 and the ground, since the connecting rod extended from the suction device 7 is fixedly connected to the left end of the sleeve 8, when the suction device 7 contracts, the sleeve 8 is retracted, and then the upper impeller transmission assembly 61, the lower impeller transmission assembly 62, and the inner ring gear bracket 9 drive the inner ring gear 5 to separate from the outer ring gear 4, so that the tire is no longer affected by the driving force of the wind resistance rotation device, and performs normal deceleration movement with the entire aircraft.

[0060] In order to increase the friction coefficient of the contact surface and improve the adhesion of the contact surface, knurling is provided on the contact surface between the upper impeller main friction wheel 613 and the reversing wheel 615 , and knurling is also provided on the contact surface between the inner gear ring 5 and the reversing wheel 615 .

[0061] The upper impeller main friction wheel 613 and the inner gear ring 5 are both made of hard materials. The reversing wheel 615 and the lower impeller main friction wheel 623 are both made of elastomeric materials, preferably high-elasticity and high-toughness materials.

[0062] like Figure 6 As shown, the edge of the upper impeller 617 is also provided with a vertical retaining edge for increasing wind resistance. The lower impeller can also adopt the same structure. In other embodiments, a special-shaped retaining edge can also be adopted.

[0063] During specific application, when the aircraft descends, the suction device pushes out the impeller assembly and the inner gear ring bracket, causing the inner gear ring to mesh with the outer gear ring of the tire; when wind resistance drives the impeller transmission assembly to rotate, it drives the inner gear ring to rotate, and the inner gear ring then drives the tire to rotate through the outer gear ring; the suction device is similar to a clutch and is used to achieve the engagement and disengagement of the impeller transmission assembly and the outer gear ring of the tire; the inner gear ring bracket assists the suction device in pushing and pulling the inner gear ring, and enables the inner gear ring to better achieve smooth rotational motion.

[0064] like Figure 7As shown, if the wind is coming from the bottom, the wind resistance drives the upper impeller 617 on the right to rotate counterclockwise, and the upper impeller connecting tube 612 fixedly connected to the upper impeller 617 drives the upper impeller main friction wheel 613 to rotate in the same direction, thereby driving the reversing wheel 615 to rotate clockwise, and the rotating reversing wheel 615 drives the inner gear ring 5 to rotate counterclockwise. Since the inner gear ring 5 and the outer gear ring 4 are in meshing state at this time, the tire rotates counterclockwise.

[0065] When the wind resistance drives the lower impeller 624 to rotate counterclockwise, the lower impeller 624 drives the lower impeller main friction wheel 623 to rotate in the same direction, and the lower impeller main friction wheel 623 drives the inner gear ring 5 to rotate counterclockwise. Since the inner gear ring 5 and the outer gear ring 4 are in a meshing state, the tire rotates counterclockwise at this time.

[0066] It can be seen that the upper impeller 617 and the lower impeller 624 can simultaneously push the tire to rotate counterclockwise through each transmission member in the above-mentioned wind resistance direction.

[0067] like Figure 6 As shown, the upper impeller blades have a vertical blocking edge 6171 to increase wind resistance, and all the outer sides of the impellers are tilted at an angle of 5° to 8° (angle α in the figure) toward the windward side, which can guide the airflow toward the main landing support 1, facilitate cooling the brakes, and improve the braking performance. The lower impeller blades also have an angle tilt structure design with the same function.

[0068] The present invention designs the above-mentioned wind resistance rotation device on the aircraft tire air rotation device, thereby reducing the speed difference of the tire relative to the ground when the aircraft lands, reducing the wear of the tread, which is beneficial to reducing the wear of the tire, extending the service life of the tire, saving purchase costs, saving manufacturing energy loss, and reducing carbon emissions; reducing the temperature rise of the tire, effectively preventing the occurrence of tire blowouts, improving the high temperature resistance of the tire, and improving the safety of tire use.

[0069] When the self-rotating device of the present invention is used in conjunction with a vibration-damping tire, the tire can effectively prevent puncture, can withstand oil and fire, high temperature and explosion, and the aircraft can also take off and land on a non-runway, and can be used for military purposes.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aircraft tire air rotation device, comprising: A main landing support, wherein the main landing support is used to connect to the aircraft; A wheel axle, the wheel axle is fixedly connected to the main landing support, a shaft sleeve is provided at the end of the wheel axle, and the shaft sleeve can move along the outer side surface of the wheel axle; Tires, wherein the tires are respectively connected to two sides of the wheel axle and can rotate relative to the wheel axle; An outer gear ring, the outer gear ring is fixedly arranged at the end of the tire and fixedly connected to the inner rim of the tire; An inner gear ring, the inner gear ring is arranged inside the outer gear ring and can mesh with the inner gear ring; A suction device, the suction device is arranged on the outer side of the wheel axle, and is used to control the movement of the sleeve along the outer side of the wheel axle; An upper impeller assembly, one end of which is fixedly connected to the upper side of the shaft sleeve, and the other end of which is provided with a friction wheel adapted to the inner ring of the inner gear ring, and the impeller on the upper impeller assembly can rotate relative to the wheel shaft; A lower impeller assembly, one end of which is fixedly connected to the lower side of the shaft sleeve and is coaxially arranged with the upper impeller assembly, and the other end of the lower impeller assembly is provided with a friction wheel adapted to the inner ring of the inner gear ring, and the lower impeller of the lower impeller assembly can rotate relative to the wheel shaft; Wherein, the upper impeller assembly is also provided with a steering wheel for synchronizing the upper impeller in the upper impeller assembly and the lower impeller in the lower impeller assembly to rotate in the same direction.

2. The aircraft tire aerial self-rotation device according to claim 1, wherein the upper impeller assembly comprises an upper impeller support and an upper impeller connecting member connected to the upper part of the upper impeller support, the lower part of the upper impeller support is fixedly connected to the shaft sleeve; the outer side of the upper impeller support is also provided with an impeller connecting pipe that can rotate relative to the upper impeller support, and the impeller connecting pipe connects the upper impeller support and the upper impeller as a whole; the other side of the upper impeller connecting member is fixedly connected to the inner gear ring; the steering wheel is arranged in the upper impeller connecting member.

3. According to the aircraft tire aerial self-rotation device of claim 2, the upper impeller connecting member comprises an upper impeller main friction wheel and a "Z" bend, the upper impeller main friction wheel is fixedly coaxially arranged on the upper end of the upper impeller connecting tube; one end of the "Z" bend is fixedly connected to the upper end of the upper impeller support member, and the other end of the "Z" bend is fixedly connected to the inner gear ring; the reversing wheel is rotatably arranged on the outer side of the "Z" bend, and one side of the reversing wheel is tangent to the upper impeller main friction wheel to form a pair of rolling friction pairs, and the other side of the reversing wheel is tangent to one end of the inner gear ring to form a pair of rolling friction pairs.

4. According to the aircraft tire aerial self-rotation device of claim 1, the upper impeller assembly further comprises an inner gear ring bracket, one end of the inner gear ring bracket is fixedly connected to the inner gear ring, and the other end of the inner gear ring bracket is fixedly connected to the shaft sleeve.

5. The aircraft tire aerial self-rotation device according to claim 1, wherein the upper impeller assembly further comprises a U-shaped wheel, the outer circle of the U-shaped wheel is tangent to the inner circle of the inner gear ring and can rotate relative to each other.

6. The aircraft tire aerial self-rotation device according to claim 1, wherein a connecting rod is fixed on the suction device, and the end of the connecting rod is fixedly connected to the shaft sleeve.

7. The aircraft tire aerial self-rotation device according to claim 3, wherein the contact surface between the upper impeller main friction wheel and the reversing wheel, and the contact surface between the inner gear ring and the reversing wheel are both provided with knurling.

8. The aircraft tire aerial self-rotation device according to claim 1, wherein the upper impeller main friction wheel and the inner gear ring are both made of hard materials.

9. The aircraft tire aerial self-rotation device according to claim 1, wherein the reversing wheel and the lower impeller main friction wheel are both made of high-elasticity and high-toughness materials.

10. The aircraft tire aerial self-rotation device according to claim 1, wherein the upper and lower impeller blades have vertical or special-shaped retaining edges for increasing wind resistance.

11. The aircraft tire aerial self-rotation device according to claim 2, wherein a rolling bearing is provided between the upper impeller support and the upper impeller connecting pipe.

12. The aircraft tire aerial self-rotation device according to claim 3, wherein a rolling bearing is provided between the reversing wheel and the "Z"-shaped bend.

13. The aircraft tire aerial self-rotation device according to claim 1, wherein the lower impeller assembly comprises a lower impeller support and a lower impeller connecting pipe which is sleeved on the outer side of the lower impeller support and can rotate relative to the lower impeller support, the upper portion of the lower impeller support is fixedly connected to the shaft sleeve, and the lower impeller connecting pipe connects the lower impeller support and the lower impeller as a whole; a lower impeller main friction wheel is fixedly and coaxially arranged at the lower end of the lower impeller connecting pipe, and one end of the lower impeller main friction wheel is tangent to one end of the inner gear ring to form a pair of rolling friction pairs.

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